CN118061727A

CN118061727A - Cooling fan control method and device and fuel cell cooling system

Info

Publication number: CN118061727A
Application number: CN202410210256.9A
Authority: CN
Inventors: 刘旭海; 耿境伯
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2024-02-26
Filing date: 2024-02-26
Publication date: 2024-05-24

Abstract

The application provides a cooling fan control method and device and a fuel cell cooling system. Wherein the method comprises the following steps: controlling at least one target fan in the cooling fan combination to run under the condition that the air conditioner is in an operating state and the fuel cell is in a non-operating state; controlling a first predetermined number of fans in the cooling fan assembly to operate under the condition that the air conditioner and the fuel cell are both in an operating state; controlling a second predetermined number of fans in the cooling fan assembly to operate under the condition that the fuel cell is in an operating state and the air conditioner is in a non-operating state; the cooling requirements of the air conditioner and the fuel cell are different, the control of the fan can be carried out according to the respective requirements through logic judgment, the heat dissipation requirements of the air conditioner and the fuel cell are effectively guaranteed, the air conditioner condenser and the fuel cell radiator share one set of fan for heat dissipation, the whole vehicle arrangement space can be saved, and meanwhile, the cost can be reduced.

Description

Cooling fan control method and device and fuel cell cooling system

Technical Field

The application relates to the technical field of control of cooling fans of fuel cells, in particular to a cooling fan control method and device and a fuel cell cooling system.

Background

With the progress of society and the development of science and technology, environmental and energy problems are increasingly prominent, and the development and popularization of energy conservation and new energy automobiles are increasingly rising. The pure electric vehicles and the hybrid electric vehicles are used as energy-saving vehicles, are rapidly developed, and are produced and sold in quantity at home and abroad. The vehicle-mounted power battery system is used as one of core components of the pure electric vehicle and the hybrid electric vehicle, and the performance of the vehicle-mounted power battery system directly influences the performance and the safety of the pure electric vehicle and the hybrid electric vehicle. Fuel cells are a power cell technology for new energy automobiles, and fuel cell stacks are devices that directly convert chemical energy into electrical energy, often used to provide electricity for electric automobiles or other power requirements. The fuel cell stack generates electric power through an oxidation-reduction reaction using hydrogen and oxygen as fuel. They are typically composed of a number of individual cells that are connected together to form a stack. The fuel cell stack has the advantages of high efficiency, environmental protection, low noise, zero emission and the like, and therefore has wide application prospect in the future energy field.

In the prior art, because the fuel cell vehicle needs to integrate a complex battery system and related equipment, the battery system and related equipment need to be arranged in a limited space, an air conditioner condenser is often arranged in front of a fuel cell stack radiator, the air conditioner condenser and the fuel cell stack radiator share a set of cooling fans, and a set of fan operation control logic is matched with the air conditioner condenser and the fuel cell stack radiator, and the scheme that the air conditioner condenser and the fuel cell stack radiator share a set of fan operation control logic cannot meet different requirements of the air conditioner and the fuel cell stack radiator on heat dissipation.

Disclosure of Invention

The application mainly aims to provide a cooling fan control method and device and a fuel cell cooling system, so as to at least solve the problem that the scheme of sharing a set of fan operation control logic by an air conditioner condenser and a fuel cell stack radiator in the prior art cannot meet different requirements of the air conditioner and the fuel cell stack radiator on heat dissipation.

In order to achieve the above object, according to one aspect of the present application, there is provided a cooling fan control method applied to a controller in a fuel cell cooling system including a fuel cell radiator, an air conditioner condenser, and a cooling fan combination fixedly installed on an outer surface of the fuel cell radiator on a side remote from the air conditioner condenser, the fuel cell radiator being disposed in close proximity to the air conditioner condenser, the cooling fan combination for radiating heat from the fuel cell radiator and the air conditioner condenser, the cooling fan combination including a plurality of fans therein, the method comprising: controlling at least one target fan in the cooling fan combination to run under the condition that an air conditioner is in a working state and a fuel cell is in a non-working state, wherein the distance between the target fan and the air conditioner is smaller than that between a non-target fan and the air conditioner, and the cooling fan combination is formed by at least one target fan and at least one non-target fan; controlling a first predetermined number of the fans in the cooling fan combination to operate when the air conditioner and the fuel cell are both in an operating state, wherein the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell; and controlling a second preset number of fans in the cooling fan combination to run under the condition that the fuel cell is in an operating state and the air conditioner is in a non-operating state, wherein the second preset number is determined by the heat dissipation requirement of the fuel cell.

Optionally, controlling the operation of at least one target fan in the cooling fan combination when the air conditioner is in an operating state and the fuel cell is in a non-operating state includes: acquiring an operation gear of the air conditioner; controlling the target fan to operate at a first rotational speed duty ratio under the condition that the operation gear of the air conditioner is in a first gear interval; and controlling the target fan to operate at a second rotating speed duty ratio under the condition that the running gear of the air conditioner is in a second gear interval, wherein the second rotating speed duty ratio is larger than the first rotating speed duty ratio, and the maximum value of the gear of the first gear interval is smaller than the minimum value of the gear of the second gear interval.

Optionally, controlling operation of a first predetermined number of the fans in the cooling fan combination when the air conditioner and the fuel cell are both in an operating state includes: respectively acquiring the heat dissipation requirement of the air conditioner and the heat dissipation requirement of the fuel cell; determining the first preset number according to the heat dissipation requirement of the fuel cell and controlling the first preset number of fans in the cooling fan combination to operate under the condition that the heat dissipation requirement of the air conditioner is smaller than the heat dissipation requirement of the fuel cell; and when the heat dissipation requirement of the air conditioner is greater than or equal to that of the fuel cell, determining the first preset number according to the heat dissipation requirement of the air conditioner, and controlling the first preset number of fans in the cooling fan combination to operate.

Optionally, controlling the operation of the first predetermined number of fans in the cooling fan combination when the air conditioner and the fuel cell are both in an operating state further includes: respectively acquiring a fan rotation speed demand duty ratio of the air conditioner and a fan rotation speed demand duty ratio of the fuel cell; determining a third rotation speed duty ratio according to the fan rotation speed demand duty ratio of the fuel cell and controlling the first predetermined number of the fans in the cooling fan combination to operate at the third rotation speed duty ratio in the case that the fan rotation speed demand duty ratio of the air conditioner is smaller than the fan rotation speed demand duty ratio of the fuel cell; and when the fan rotating speed demand duty ratio of the air conditioner is greater than or equal to the fan rotating speed demand duty ratio of the fuel cell, determining the fan rotating speed demand duty ratio of the air conditioner as the third rotating speed duty ratio, and controlling the first preset number of fans in the cooling fan combination to operate at the third rotating speed duty ratio.

Optionally, the fuel cell cooling system further includes a fuel cell stack, a water pump, a first temperature sensor, a first electrically operated valve, and a second electrically operated valve, wherein the first temperature sensor is mounted at a cooling water outlet of the fuel cell stack, the first end of the first electrically operated valve is connected to a line where the first end of the water pump is connected to a second end of the second electrically operated valve, the second end of the first electrically operated valve is connected to a line where the first end of the fuel cell radiator is connected to a cooling water inlet of the fuel cell stack, the first end of the second electrically operated valve is connected to a second end of the fuel cell radiator, the second end of the second electrically operated valve is connected to a first end of the water pump, the second end of the water pump is connected to a cooling water outlet of the fuel cell stack, and after determining the first predetermined number of the fans in the cooling fan combination to operate at the third rotational speed duty cycle according to a fan rotational speed demand duty cycle of the fuel cell, the method further includes: acquiring a first real-time difference value between the real-time cooling water outlet temperature of the fuel cell stack and a first outlet water temperature preset value, wherein the real-time cooling water outlet temperature is acquired by the first temperature sensor; and adjusting the opening degree of the first electric valve and the opening degree of the second electric valve according to the first real-time difference value so as to control the large circulation cooling water flow rate and the small circulation cooling water flow rate of the fuel cell cooling system, wherein the first electric valve controls the small circulation of the fuel cell cooling system, and the first electric valve controls the large circulation of the fuel cell cooling system, wherein the large circulation is a circulation formed by the fuel cell stack, the water pump, the second electric valve and the fuel cell radiator, and the small circulation is a circulation formed by the fuel cell stack, the water pump and the first electric valve.

Optionally, the fuel cell cooling system further includes a second temperature sensor, wherein the second temperature sensor is installed at a cooling water inlet of the fuel cell stack, and controls a second predetermined number of the fans in the cooling fan combination to operate in a case that the fuel cell is in an operating state and the air conditioner is in a non-operating state, including: acquiring a second real-time difference value between the real-time cooling water inlet temperature and a preset inlet temperature value of the fuel cell stack; and controlling a second preset number of fans in the cooling fan combination to run according to the second real-time difference value, wherein the real-time cooling water inlet temperature is acquired by the second temperature sensor.

Optionally, the fuel cell cooling system further comprises a fuel cell stack, a water pump, a first temperature sensor, a first electrically operated valve and a second electrically operated valve, wherein the first temperature sensor is mounted at a cooling water outlet of the fuel cell stack, the first end of the first electrically operated valve is connected to a line connecting the first end of the water pump with the second end of the second electrically operated valve, the second end of the first electrically operated valve is connected to a line connecting the first end of the fuel cell radiator with a cooling water inlet of the fuel cell stack, the first end of the second electrically operated valve is connected to the second end of the fuel cell radiator, the second end of the second electrically operated valve is connected to the first end of the water pump, the second end of the water pump is connected to a cooling water outlet of the fuel cell stack, and after controlling the second predetermined number of the fans in the cooling fan combination according to the second real-time difference value, the method further comprises: and acquiring a third real-time difference value between the real-time cooling water outlet temperature of the fuel cell stack and a second outlet temperature preset value, and adjusting the opening degree of the first electric valve and the opening degree of the second electric valve according to the third real-time difference value so as to control the flow of the cooling water in the large circulation and the small circulation of the fuel cell cooling system, wherein the large circulation is a circulation formed by the fuel cell stack, the water pump, the second electric valve and the fuel cell radiator, the small circulation is a circulation formed by the fuel cell stack, the water pump and the first electric valve, and the real-time cooling water outlet temperature is acquired by the first temperature sensor.

According to another aspect of the present application, there is provided a cooling fan control apparatus for use in a controller in a fuel cell cooling system including a fuel cell radiator, an air conditioning condenser, and a cooling fan assembly fixedly mounted on an outer surface of the fuel cell radiator on a side remote from the air conditioning condenser, the fuel cell radiator being disposed in close proximity to the air conditioning condenser, the cooling fan assembly for radiating heat from the fuel cell radiator and the air conditioning condenser, the cooling fan assembly including a plurality of fans therein, the apparatus comprising: the first control unit is used for controlling at least one target fan in the cooling fan combination to run when the air conditioner is in a working state and the fuel cell is in a non-working state, wherein the distance between the target fan and the air conditioner is smaller than that between a non-target fan and the air conditioner, and the cooling fan combination is formed by at least one target fan and at least one non-target fan; a second control unit configured to control a first predetermined number of the fans in the cooling fan combination to operate in a case where the air conditioner and the fuel cell are both in an operating state, wherein the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell; and a third control unit, configured to control a second predetermined number of the fans in the cooling fan combination to operate when the fuel cell is in an operating state and the air conditioner is in a non-operating state, where the second predetermined number is determined by a heat dissipation requirement of the fuel cell.

According to still another aspect of the present application, there is provided a fuel cell cooling system comprising: the cooling fan combination is used for radiating the fuel cell radiator and the air conditioner condenser, and comprises a plurality of fans; and a controller for controlling the cooling fan combination operation for executing any one of the cooling fan control methods.

Optionally, the fuel cell cooling system further comprises: the fuel cell system comprises a fuel cell stack, a water pump, a first temperature sensor, a second temperature sensor, a first electric valve and a second electric valve, wherein the first temperature sensor is installed at a cooling water outlet of the fuel cell stack, the second temperature sensor is installed at a cooling water inlet of the fuel cell stack, a first end of the first electric valve is connected to a pipeline with a first end of the water pump connected with a second end of the second electric valve, a second end of the first electric valve is connected to a pipeline with a first end of a fuel cell radiator connected with the cooling water inlet of the fuel cell stack, a first end of the second electric valve is connected to a second end of the fuel cell radiator, a second end of the second electric valve is connected to the first end of the water pump, and a second end of the water pump is connected to the cooling water outlet of the fuel cell stack.

By applying the technical scheme of the application, under the condition that the air conditioner is in a working state and the fuel cell is in a non-working state, at least one target fan in the cooling fan combination is controlled to run; controlling a first predetermined number of fans in the cooling fan assembly to operate under the condition that the air conditioner and the fuel cell are both in an operating state; controlling a second predetermined number of fans in the cooling fan assembly to operate under the condition that the fuel cell is in an operating state and the air conditioner is in a non-operating state; the cooling requirements of the air conditioner and the fuel cell are different, the control of the fan can be carried out according to the respective requirements through logic judgment, the heat dissipation requirements of the air conditioner and the fuel cell are effectively guaranteed, the air conditioner condenser and the fuel cell radiator share one set of fan for heat dissipation, the whole vehicle arrangement space can be saved, and meanwhile, the cost can be reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 illustrates a hardware block diagram of a mobile terminal performing a cooling fan control method according to an embodiment of the present application;

fig. 2 shows a flow diagram of a cooling fan control method according to an embodiment of the present application;

fig. 3 shows a schematic structural view of a fuel cell stack cooling system provided according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a fan control flow in an air conditioner only operation state according to an embodiment of the present application;

fig. 5 shows a schematic diagram of a cooling fan control flow of a fuel cell stack cooling system provided according to an embodiment of the present application;

Fig. 6 shows a block diagram of a cooling fan control apparatus provided according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

10. A fuel cell stack; 20. a water pump; 30. a first electrically operated valve; 40. a second electrically operated valve; 50. a first temperature sensor; 60. a second temperature sensor; 70. a cooling fan assembly; 71. a first fan set; 72. a second fan set; 80. a fuel cell radiator; 90. an air conditioner condenser.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For convenience of description, the following will describe some terms or terminology involved in the embodiments of the present application:

FCU: a Fuel CELL ENGINE Control Unit Fuel cell engine Control Unit, an electronic Control Unit for controlling a Fuel cell engine. It is responsible for monitoring and adjusting various parameters in the fuel cell system to ensure proper operation and efficiency of the engine. FCU fuel cell engine control units typically include components such as sensors, actuators, and controllers to provide accurate control of the fuel cell system to meet vehicle power demands and to increase energy efficiency.

ATS: advance Traction System radiator controller, an apparatus for controlling the radiator of an automotive engine, which monitors the engine temperature and automatically adjusts the fan speed of the radiator to maintain the engine within a suitable operating temperature range. The ATS radiator controller can adjust the rotating speed of the radiator fan in real time according to the working load and the ambient temperature of the engine, so that the cooling efficiency of the engine is effectively improved, the service life of the engine is prolonged, and the fuel economy of an automobile is improved.

As described in the background art, the scheme of the prior art that the air conditioner condenser and the fuel cell stack radiator share one set of fan operation control logic cannot meet different requirements of the air conditioner and the fuel cell stack radiator for heat dissipation, so as to solve the problem that the scheme of the prior art that the air conditioner condenser and the fuel cell stack radiator share one set of fan operation control logic cannot meet different requirements of the air conditioner and the fuel cell stack radiator for heat dissipation.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The method embodiments provided in the embodiments of the present application may be performed in a mobile terminal, a computer terminal or similar computing device. Taking a mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of a mobile terminal according to a cooling fan control method according to an embodiment of the present application. As shown in fig. 1, a mobile terminal may include one or more (only one is shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and not limiting of the structure of the mobile terminal described above. For example, the mobile terminal may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.

The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to a cooling fan control method in an embodiment of the present invention, and the processor 102 executes the computer program stored in the memory 104 to perform various functional applications and data processing, that is, to implement the above-mentioned method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, which may be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as a NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is configured to communicate with the internet wirelessly.

In the present embodiment, a cooling fan control method operating on a mobile terminal, a computer terminal, or a similar computing device is provided, it is to be noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that shown or described herein.

Fig. 2 is a flowchart of a cooling fan control method according to an embodiment of the present application. The cooling fan control method is applied to a controller in the fuel cell cooling system;

The fuel cell cooling system as shown in fig. 3, the fuel cell cooling system comprises a fuel cell radiator 80, an air conditioner condenser 90 and a cooling fan assembly 70, wherein the cooling fan assembly 70 is fixedly installed on an outer surface of the side of the fuel cell radiator 80 away from the air conditioner condenser 90, the fuel cell radiator 80 is disposed adjacent to the air conditioner condenser 90, the cooling fan assembly 70 is used for radiating heat from the fuel cell radiator 80 and the air conditioner condenser 90, and the cooling fan assembly 70 comprises a plurality of fans, as shown in fig. 2, the method comprises the following steps:

Step S201, under the condition that the air conditioner is in a working state and the fuel cell is in a non-working state, controlling at least one target fan in the cooling fan combination to run, wherein the distance between the target fan and the air conditioner is smaller than the distance between the non-target fan and the air conditioner, and the cooling fan combination is formed by the at least one target fan and the at least one non-target fan;

The interval between the fuel cell radiator and the air conditioner condenser may be set according to the actual situation, and for example, the interval may be set to be 2cm, 3cm, 4cm, etc.

Specifically, in the fuel cell cooling system, the fuel cell radiator, the air conditioner condenser and the cooling fan combination are adjacently and compactly arranged, the cooling fan combination is fixedly installed on the outer surface of one side, far away from the air conditioner condenser, of the fuel cell radiator, the fuel cell radiator and the air conditioner condenser are closely arranged, the specific installation position is shown in fig. 3, the fuel cell radiator, the air conditioner condenser and the cooling fan combination can be installed according to a set distance, the set distance and the installation mode can be set according to actual conditions, and the cooling fan combination needs to be controlled to ensure that the heat dissipation requirements of the battery radiator and the air conditioner condenser can be met respectively.

The cooling fan assembly includes a first fan set 71 and a second fan set 72, and the target fan can be set to correspond to the second fan set 72 of the air conditioner condenser according to fig. 3, wherein the first fan set 71 and the second fan set 72 each include a plurality of fans, and only the second fan set 72 is operated in a state that only the air conditioner is in operation, so that the cooling of the air conditioner condenser can be realized, and the energy-saving effect is also realized.

Step S202, controlling a first preset number of fans in a cooling fan combination to run under the condition that the air conditioner and the fuel cell are in an operating state, wherein the first preset number is related to the heat dissipation requirement of the air conditioner and the heat dissipation requirement of the fuel cell;

Specifically, in the case where the air conditioner and the fuel cell are operated simultaneously, it is necessary to determine the number of fans in the cooling fan combination to satisfy the heat dissipation requirements of both the air conditioner and the fuel cell.

In step S203, when the fuel cell is in the operating state and the air conditioner is in the non-operating state, a second predetermined number of fans in the cooling fan assembly are controlled to operate, wherein the second predetermined number is determined by the heat dissipation requirement of the fuel cell.

Specifically, in the case where only the fuel cell alone is in an operating state, it is only necessary to control the number of operations of the cooling fans in accordance with the heat radiation requirement of the fuel cell, that is, it is unnecessary to consider the heat radiation requirement of the air conditioner.

With the present embodiment, in the case where the air conditioner is in the operating state and the fuel cell is in the non-operating state, at least one target fan in the cooling fan combination is controlled to operate; controlling a first predetermined number of fans in the cooling fan assembly to operate under the condition that the air conditioner and the fuel cell are both in an operating state; controlling a second predetermined number of fans in the cooling fan assembly to operate under the condition that the fuel cell is in an operating state and the air conditioner is in a non-operating state; the cooling requirements of the air conditioner and the fuel cell are different, the control of the fan can be carried out according to the respective requirements through logic judgment, the heat dissipation requirements of the air conditioner and the fuel cell are effectively guaranteed, the air conditioner condenser and the fuel cell radiator share one set of fan for heat dissipation, the whole vehicle arrangement space can be saved, and meanwhile, the cost can be reduced.

In a specific implementation process, step S201, when the air conditioner is in a working state and the fuel cell is in a non-working state, controls at least one target fan in the cooling fan combination to run, as shown in fig. 4, including the following steps:

Step S2011: acquiring an operation gear of the air conditioner;

step S2012: when the operation gear of the air conditioner is in the first gear interval, controlling the target fan to operate at a first rotation speed duty ratio;

Step S2013: when the operation gear of the air conditioner is in a second gear section, the control target fan operates at a second rotating speed duty ratio, wherein the second rotating speed duty ratio is larger than the first rotating speed duty ratio, and the maximum value of the gear of the first gear section is smaller than the minimum value of the gear of the second gear section.

Of course, the operation gear of the air conditioner may be set according to the requirement, and two gears, three gears, four gears, etc. may be set.

For example, the operation gear of the air conditioner is set to a low gear and a high gear, and in the case where the operation gear is in the low gear, the fan rotation speed duty ratio may be set to 50%; in the case where the operation range is in the high range, the fan rotation speed duty ratio may be set to 70%. The specific fan rotating speed duty ratio setting can be adjusted and set according to the actual conditions of the operating gears of different air conditioners.

In the step S202, when the air conditioner and the fuel cell are both in the operating state, the first predetermined number of fans in the cooling fan assembly are controlled to operate, including: respectively acquiring the heat dissipation requirement of an air conditioner and the heat dissipation requirement of a fuel cell; under the condition that the heat dissipation requirement of the air conditioner is smaller than that of the fuel cell, determining a first preset number according to the heat dissipation requirement of the fuel cell, and controlling the first preset number of fans in the cooling fan combination to operate; and when the heat dissipation requirement of the air conditioner is greater than or equal to that of the fuel cell, determining a first preset number according to the heat dissipation requirement of the air conditioner, and controlling the first preset number of fans in the cooling fan combination to operate.

According to the method, under the condition that the air conditioner and the fuel cell are in a working state at the same time, the heat dissipation requirement of the air conditioner and the heat dissipation requirement of the fuel cell are required to be respectively determined, the first preset number of fans are determined to operate according to the comparison of the heat dissipation requirements of the air conditioner and the fuel cell, for example, under the condition that the heat dissipation requirement of the fuel cell is larger than the heat dissipation requirement of the air conditioner, the number of fans are determined to operate according to the heat dissipation requirement of the fuel cell, and under the condition that the heat dissipation requirement of the fuel cell is smaller than or equal to the heat dissipation requirement of the air conditioner, the number of fans are determined to operate according to the heat dissipation requirement of the air conditioner.

Specifically, in the case where both the air conditioner and the fuel cell are in the operating state, controlling the operation of the first predetermined number of fans in the cooling fan combination further includes: respectively acquiring a fan rotation speed demand duty ratio of an air conditioner and a fan rotation speed demand duty ratio of a fuel cell; determining a third rotation speed duty ratio according to the fan rotation speed demand duty ratio of the fuel cell under the condition that the fan rotation speed demand duty ratio of the air conditioner is smaller than the fan rotation speed demand duty ratio of the fuel cell, and controlling a first preset number of fans in the cooling fan combination to run at the third rotation speed duty ratio; and when the fan rotating speed demand duty ratio of the air conditioner is greater than or equal to the fan rotating speed demand duty ratio of the fuel cell, determining the fan rotating speed demand duty ratio as a third rotating speed duty ratio according to the fan rotating speed demand duty ratio of the air conditioner, and controlling a first preset number of fans in the cooling fan combination to operate at the third rotating speed duty ratio.

Specifically, on the basis of determining the number of operating fans, the fan rotation speed demand duty ratio of the air conditioner and the fan rotation speed demand duty ratio of the fuel cell are required to be obtained respectively, and the rotation speed duty ratio of the first preset number of fan operations is determined according to the comparison of the fan rotation speed demand duty ratio of the air conditioner and the fan rotation speed demand duty ratio of the fuel cell, so that the heat dissipation requirements of the air conditioner and the fuel cell are met simultaneously.

More specifically, the fuel cell cooling system further includes a fuel cell stack 10, a water pump 20, a first temperature sensor 50, a first electric valve 30, and a second electric valve 40, wherein the first temperature sensor 50 is installed at a cooling water outlet of the fuel cell stack 10, a first end of the first electric valve 30 is connected to a line in which a first end of the water pump is connected to a second end of the second electric valve 40, a second end of the first electric valve 30 is connected to a line in which a first end of the fuel cell radiator 80 is connected to a cooling water inlet of the fuel cell stack 10, a first end of the second electric valve 40 is connected to a second end of the fuel cell radiator 80, a second end of the second electric valve 40 is connected to a first end of the water pump 20, and a second end of the water pump 20 is connected to a cooling water outlet of the fuel cell stack 10, and after determining that a first predetermined number of fans in the cooling fan combination are operated at a third rotational speed duty according to a fan rotational speed demand duty of the fuel cell, the method further includes: acquiring a first real-time difference value between the real-time cooling water outlet temperature of the fuel cell stack and a first outlet temperature preset value, wherein the real-time cooling water outlet temperature is acquired by a first temperature sensor; and adjusting the opening of the first electric valve and the opening of the second electric valve according to the first real-time difference value to control the large circulation cooling water flow and the small circulation cooling water flow of the fuel cell cooling system, wherein the first electric valve controls the small circulation of the fuel cell cooling system, and the first electric valve controls the large circulation of the fuel cell cooling system, wherein the large circulation is a circulation formed by a fuel cell stack, a water pump, the second electric valve and a fuel cell radiator, and the small circulation is a circulation formed by the fuel cell stack, the water pump and the first electric valve.

According to the method, after the fan rotating speed demand duty ratio of the fuel cell is determined to be the third rotating speed duty ratio, the cooling water outlet temperature of the fuel cell stack is obtained in real time to adjust the opening degree of the first electric valve and the opening degree of the second electric valve in real time, so that the control precision of the target water temperature of the fuel cell can be ensured, and the temperature of the fuel cell stack is in an optimal working temperature range.

The above-mentioned step S203, the fuel cell cooling system further includes a second temperature sensor 60, wherein the second temperature sensor 60 is installed at the cooling water inlet of the fuel cell stack 10, and controls the second predetermined number of fans in the cooling fan assembly to operate in a case where the fuel cell is in an operating state and the air conditioner is in a non-operating state, including: acquiring a second real-time difference value between the real-time cooling water inlet temperature of the fuel cell stack and a preset inlet temperature value; and controlling a second preset number of fans in the cooling fan combination to run according to the second real-time difference value, wherein the real-time cooling water inlet temperature is acquired by a second temperature sensor.

The method comprises the steps of acquiring the temperature of a cooling water inlet of a fuel cell stack in real time under the condition that only the fuel cell is in a working state, and dynamically adjusting the number and the rotating speed duty ratio of a second preset number of fans according to the temperature of the cooling water inlet so as to enable the temperature of the cooling water inlet to be maintained within a target set temperature range.

Further, the fuel cell cooling system further comprises a fuel cell stack 10, a water pump 20, a first temperature sensor 50, a first electrically operated valve 30, and a second electrically operated valve 40, wherein the first temperature sensor 50 is installed at a cooling water outlet of the fuel cell stack 10, a first end of the first electrically operated valve 30 is connected to a line where a first end of the water pump is connected to a second end of the second electrically operated valve 40, a second end of the first electrically operated valve 30 is connected to a line where a first end of the fuel cell radiator 80 is connected to a cooling water inlet of the fuel cell stack 10, a first end of the second electrically operated valve 40 is connected to a second end of the fuel cell radiator 80, a second end of the second electrically operated valve 40 is connected to a first end of the water pump 20, and a second end of the water pump 20 is connected to a cooling water outlet of the fuel cell stack 10, and after controlling operation of a second predetermined number of fans in the cooling fan combination according to a second real-time difference value, the method further comprises: and obtaining a third real-time difference value between the real-time cooling water outlet temperature of the fuel cell stack and a second outlet temperature preset value, and adjusting the opening of the first electric valve and the second electric valve according to the third real-time difference value to control the flow of the cooling water of the large circulation and the small circulation of the fuel cell cooling system, wherein the large circulation is a circulation formed by the fuel cell stack, the water pump, the second electric valve and the fuel cell radiator, the small circulation is a circulation formed by the fuel cell stack, the water pump and the first electric valve, and the real-time cooling water outlet temperature is acquired by the first temperature sensor.

According to the method, when only the fuel cell is in a working state, after the running number and the duty ratio of the fans are determined according to the temperature of the cooling water inlet of the fuel cell stack, the temperature of the cooling water outlet of the fuel cell stack is obtained in real time, and the opening degree of the first electric valve and the opening degree of the second electric valve are controlled in real time according to the temperature of the cooling water outlet of the fuel cell stack, so that the aim of accurately controlling the temperature of the fuel cell stack is fulfilled.

In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the cooling fan control method of the present application will be described in detail with reference to specific embodiments.

The embodiment relates to a specific cooling fan control method, as shown in fig. 3 and 5, the fuel cell stack cooling system is shown in fig. 3, and includes a fuel cell stack 10, a water pump 20, a first electric valve 30, a second electric valve 40, a first temperature sensor 50, a second temperature sensor 60, a cooling fan assembly 70, a fuel cell radiator 80 and an air conditioner condenser 90, wherein the cooling fan assembly 70 includes a first fan group 71 and a second fan group 72, the first electric valve 30 and the second electric valve 40 can realize control of different opening degrees according to requirements, and the opening degrees control the flow of internal and external circulation of cooling liquid; the first temperature sensor 50 measures the temperature of the coolant flowing out of the fuel cell stack 10, and the second temperature sensor 60 measures the temperature of the coolant flowing into the fuel cell stack 10; the water pump 20 can perform rotation speed adjustment according to the temperature and the temperature difference of the cooling liquid; the air conditioning condenser 90 and the fuel cell radiator 80 share the cooling fan assembly 70 for cooling; the first fan set 71 and the second fan set 72 can realize the adjustment of the number of the running fans and the running rotating speed according to the control logic; the method specifically comprises the following steps:

Because the air-conditioning condenser 90 and the fuel cell radiator 80 share a fan, whether the fan is running or not is required to judge the working states of the air-conditioning and the fuel cell; if only one of the air conditioner or the fuel cell has a demand, the control of the fan is performed according to the demand of the one; if the air conditioner and the fuel cell work simultaneously, fan control is required according to respective heat dissipation requirements; the air conditioner has two low-speed and high-speed gears according to the heat dissipation requirements, and the running number is fixed according to the arrangement; the fuel cell has complex heat dissipation requirements, and the requirements on the running number and the running rotating speed of the fans are different under different working conditions, so that the actual water inlet temperature of the fuel cell stack cooling liquid is ensured to be within a target range. The specific control logic is as follows:

The schematic diagram of the control flow of the cooling fan of the fuel cell stack cooling system is shown in fig. 5, and after the whole vehicle is started, the ATS judges the running number of the fan and the rotating speed duty ratio according to the air conditioner and the fuel cell starting instruction.

1) When the fuel cell is not in operation and the air conditioner is in operation, the ATS is controlled according to the air conditioner demand. When the demand is a low gear, the first fan group 71 corresponding to the air conditioner condenser is operated, and the rotating speed duty ratio is 50%; when the demand is in the high gear, the first fan group 71 corresponding to the air conditioner condenser is operated, and the rotational speed duty ratio is 70%.

2) When the fuel cell and the air conditioner work simultaneously, the air conditioner controller and the FCU send the running number of fans and the rotating speed duty ratio to the ATS simultaneously; when the running number N1 of the FCU required fans is not lower than the running number N2 of the air conditioner required fans, the ATS responds to the FCU requirement, otherwise, the ATS responds to the air conditioner requirement; when the FCU demand rotating speed duty ratio P1 is not lower than the air conditioner demand rotating speed duty ratio P2, the ATS responds to the FCU demand, otherwise, the ATS responds to the air conditioner demand; when the ATS responds to the air-conditioning demand, in order to ensure the accuracy of the target water temperature control of the fuel cell, it is necessary to adjust the opening degrees of the first and second electrically operated valves 30 and 40 in real time.

3) When the fuel cell is in operation and the air conditioner is not in operation, the ATS is controlled according to the fuel cell demand. The FCU sends the cooling water inlet target temperature of the electric pile to the ATS, the ATS controls the running number of fans and the rotating speed duty ratio according to a calibration program, and meanwhile, the FCU controls the opening of the first electric valve 30 and the second electric valve 40 according to different water outlet temperatures, so as to control the flow of the large and small circulating cooling liquid and control the water inlet and outlet temperature difference of the electric pile.

The air conditioner condenser and the fuel cell radiator share one set of cooling fan for combined heat radiation, so that the arrangement space of the whole vehicle can be saved, and part of cost can be reduced; because the starting and cooling requirements of the air conditioner and the fuel cell are different, the fan can be controlled according to the respective requirements through logic judgment, so that the heat dissipation requirements of the air conditioner and the fuel cell are effectively ensured; and the requirements of the fuel cell stack cooling liquid on the temperature precision can be effectively ensured through the linkage control of the electric valve and the ATS.

The embodiment of the application also provides a cooling fan control device, and the cooling fan control device can be used for executing the cooling fan control method provided by the embodiment of the application. The device is used for realizing the above embodiments and preferred embodiments, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

The cooling fan control apparatus provided by the embodiment of the present application is described below.

Fig. 6 is a schematic view of a cooling fan control apparatus according to an embodiment of the present application. As shown in fig. 6, the apparatus includes: the first control unit 61, the second control unit 62, and the third control unit 63.

A first control unit 61, configured to control, when an air conditioner is in an operating state and a fuel cell is in a non-operating state, at least one target fan in the cooling fan combination to operate, where a distance between the target fan and the air conditioner is smaller than a distance between a non-target fan and the air conditioner, and at least one of the target fan and the non-target fan constitute the cooling fan combination;

Specifically, a fuel cell radiator, an air conditioner condenser and a cooling fan combination which are adjacently and compactly arranged in the fuel cell cooling system are fixedly arranged on the outer surface of one side, far away from the air conditioner condenser, of the fuel cell radiator, and the fuel cell radiator and the air conditioner condenser are closely arranged; the fuel cell radiator, the air conditioner condenser and the cooling fan combination can be installed according to a set distance, the set distance and the installation mode can be set according to actual conditions, and the cooling fan combination needs to be controlled to meet the heat dissipation requirements of the cell radiator and the air conditioner condenser respectively.

The cooling fan assembly comprises a first fan set and a second fan set, the target fan can be set to be the second fan set corresponding to the air conditioner condenser according to fig. 3, the first fan set and the second fan set comprise a plurality of fans, and only the second fan set is operated to cool the air conditioner condenser in the working state of the air conditioner, so that the energy-saving effect is achieved.

A second control unit 62, configured to control a first predetermined number of the fans in the cooling fan combination to operate when both the air conditioner and the fuel cell are in an operating state, where the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell;

And a third control unit 63 for controlling a second predetermined number of the fans in the cooling fan combination to operate in a case where the fuel cell is in an operating state and the air conditioner is in a non-operating state, wherein the second predetermined number is determined by a heat dissipation requirement of the fuel cell.

Specifically, in the case where only the fuel cell alone is in an operating state, it is only necessary to control the number of operation of the cooling fans in accordance with the heat radiation requirement of the fuel cell, so that the heat radiation requirement of the air conditioner does not need to be considered.

In this embodiment, the first control unit is configured to control, when the air conditioner is in an operating state and the fuel cell is in a non-operating state, operation of at least one target fan in the cooling fan combination, the second control unit is configured to control, when the air conditioner and the fuel cell are both in an operating state, operation of a first predetermined number of fans in the cooling fan combination, and the third control unit is configured to control, when the fuel cell is in an operating state and the air conditioner is in a non-operating state, operation of a second predetermined number of fans in the cooling fan combination. The cooling requirements of the air conditioner and the fuel cell are different, the control of the fan can be carried out according to the respective requirements through logic judgment, the heat dissipation requirements of the air conditioner and the fuel cell are effectively guaranteed, the air conditioner condenser and the fuel cell radiator share one set of fan for heat dissipation, the whole vehicle arrangement space can be saved, and meanwhile, the cost can be reduced.

As an alternative, the first control unit includes a first acquisition module, a first control module, and a second control module; the first acquisition module is used for acquiring the running gear of the air conditioner; the first control module is used for controlling the target fan to operate at a first rotation speed duty ratio under the condition that the operation gear of the air conditioner is in a first gear interval; and the second control module is used for controlling the target fan to operate at a second rotating speed duty ratio under the condition that the running gear of the air conditioner is in a second gear interval, wherein the second rotating speed duty ratio is larger than the first rotating speed duty ratio, and the maximum value of the gear of the first gear interval is smaller than the minimum value of the gear of the second gear interval.

The operation gear of the air conditioner can be set according to requirements, and two gears, three gears, four gears and the like can be set.

Alternatively, the second control unit includes a second acquisition module, a third control module, and a fourth control module; the second acquisition module is used for respectively acquiring the heat dissipation requirement of the air conditioner and the heat dissipation requirement of the fuel cell; a third control module, configured to determine the first predetermined number according to the heat dissipation requirement of the fuel cell and control the first predetermined number of the fans in the cooling fan combination to operate when the heat dissipation requirement of the air conditioner is smaller than the heat dissipation requirement of the fuel cell; and the fourth control module is used for determining the first preset number according to the heat dissipation requirement of the air conditioner and controlling the first preset number of fans in the cooling fan combination to run under the condition that the heat dissipation requirement of the air conditioner is greater than or equal to the heat dissipation requirement of the fuel cell.

The device is in the condition that operating condition is simultaneously in to air conditioner and fuel cell, need confirm the heat dissipation demand of air conditioner and fuel cell's heat dissipation demand respectively, confirm the operation of first predetermined quantity fan according to the size of contrast air conditioner and fuel cell's heat dissipation demand, for example, under the condition that the heat dissipation demand of fuel cell is greater than the heat dissipation demand of air conditioner, confirm the quantity that the fan operated according to the heat dissipation demand of fuel cell, under the condition that the heat dissipation demand of fuel cell is less than or equal to the heat dissipation demand of air conditioner, confirm the quantity that the fan operated according to the heat dissipation demand of air conditioner.

Optionally, the second control unit further includes a third acquisition module, a first determination module, and a second determination module; a third obtaining module, configured to obtain a fan rotation speed demand duty cycle of the air conditioner and a fan rotation speed demand duty cycle of the fuel cell, respectively; a first determining module configured to determine a third rotation speed duty ratio according to a fan rotation speed demand duty ratio of the fuel cell and control the first predetermined number of the fans in the cooling fan combination to operate at the third rotation speed duty ratio, in a case where the fan rotation speed demand duty ratio of the air conditioner is smaller than the fan rotation speed demand duty ratio of the fuel cell; and the second determining module is used for determining the third rotating speed duty ratio according to the fan rotating speed demand duty ratio of the air conditioner and controlling the first preset number of fans in the cooling fan combination to run at the third rotating speed duty ratio under the condition that the fan rotating speed demand duty ratio of the air conditioner is larger than or equal to the fan rotating speed demand duty ratio of the fuel cell.

Alternatively, the second control unit further includes a fourth acquisition module and a first adjustment module;

A fourth obtaining module, configured to obtain a first real-time difference value between a real-time cooling water outlet temperature of the fuel cell stack and a first outlet temperature preset value after determining that the first predetermined number of fans in the cooling fan combination operate at the third rotation speed duty ratio according to a fan rotation speed demand duty ratio of the fuel cell, where the real-time cooling water outlet temperature is acquired by the first temperature sensor; the first adjusting module is used for adjusting the opening degrees of the first electric valve and the second electric valve according to the first real-time difference value so as to control the large circulation cooling water flow rate and the small circulation cooling water flow rate of the fuel cell cooling system, wherein the first electric valve controls the small circulation of the fuel cell cooling system, the first electric valve controls the large circulation of the fuel cell cooling system, and the large circulation consists of a fuel cell stack, a water pump, the second electric valve and a fuel cell radiator.

After the fan rotating speed demand duty ratio of the fuel cell is determined to be the third rotating speed duty ratio, the device acquires the cooling water outlet temperature of the fuel cell stack in real time to adjust the opening degree of the first electric valve and the opening degree of the second electric valve in real time, so that the control precision of the target water temperature of the fuel cell can be ensured, and the temperature of the fuel cell stack is in an optimal working temperature range.

Alternatively, the third control unit includes a fifth acquisition module and a fifth control module;

A fifth obtaining module, configured to obtain a second real-time difference between the real-time cooling water inlet temperature of the fuel cell stack and a preset inlet temperature value; and a fifth control module, configured to control a second predetermined number of fans in the cooling fan combination to operate according to the second real-time difference value, where the real-time cooling water inlet temperature is acquired by the second temperature sensor.

Specifically, under the condition that only the fuel cell is in a working state, the temperature of the cooling water inlet of the fuel cell stack is obtained in real time, and the number and the rotating speed duty ratio of the second preset number of fans are dynamically adjusted according to the temperature of the cooling water inlet, so that the temperature of the cooling water inlet is maintained within a target set temperature range.

In an alternative solution, the third control unit includes a sixth obtaining module, configured to obtain a third real-time difference value between a real-time cooling water outlet temperature of the fuel cell stack and a second outlet temperature preset value after controlling a second predetermined number of fans in the cooling fan combination to run according to the second real-time difference value, and adjust openings of the first electric valve and the second electric valve according to the third real-time difference value, so as to control flow rates of cooling water in a large cycle and a small cycle of the fuel cell cooling system, where the large cycle is a cycle composed of the fuel cell stack, the water pump, the second electric valve, and the fuel cell radiator, the small cycle is a cycle composed of the fuel cell stack, the water pump, and the first electric valve, and the real-time cooling water outlet temperature is acquired by the first temperature sensor.

The device is in the operating condition of only the fuel cell, after the running number and the duty ratio of the fans are determined according to the temperature of the cooling water inlet of the fuel cell stack, the temperature of the cooling water outlet of the fuel cell stack is obtained in real time, and the opening degree of the first electric valve and the opening degree of the second electric valve are controlled in real time according to the temperature of the cooling water outlet of the fuel cell stack, so that the aim of accurately controlling the temperature of the fuel cell stack is fulfilled.

The cooling fan control device comprises a processor and a memory, wherein the first control unit, the second control unit, the third control unit and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions. The modules are all located in the same processor; or the above modules may be located in different processors in any combination.

An embodiment of the present invention provides a fuel cell cooling system including: the fuel cell radiator, the air conditioner condenser and the cooling fan combination are adjacently and compactly arranged, the cooling fan combination is used for radiating heat of the fuel cell radiator and the air conditioner condenser, and the cooling fan combination comprises a plurality of fans; and a controller for controlling the cooling fan combination operation for executing the cooling fan control method. The fuel cell cooling system further includes: the fuel cell system comprises a fuel cell stack, a water pump, a first temperature sensor, a second temperature sensor, a first electric valve and a second electric valve, wherein the first temperature sensor is arranged at a cooling water outlet of the fuel cell stack, the second temperature sensor is arranged at a cooling water inlet of the fuel cell stack, a first end of the first electric valve is connected to a pipeline with a first end of the water pump connected with a second end of the second electric valve, a second end of the first electric valve is connected to a pipeline with a first end of a fuel cell radiator connected with a cooling water inlet of the fuel cell stack, a first end of the second electric valve is connected to a second end of the fuel cell radiator, and a second end of the second electric valve is connected to a first end of the water pump connected to the cooling water outlet of the fuel cell stack.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problems that the scheme that the prior art air conditioner condenser and the fuel cell stack radiator share one set of fan operation control logic can not meet different requirements of the air conditioner and the fuel cell stack radiator for heat dissipation can be solved by adjusting the inner core parameters.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the invention provides a computer readable storage medium, which comprises a stored program, wherein the device where the computer readable storage medium is located is controlled to execute the cooling fan control method when the program runs.

Specifically, the cooling fan control method includes:

The embodiment of the invention provides a processor for running a program, wherein the cooling fan control method is executed when the program runs.

Specifically, the cooling fan control method includes:

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program:

The device herein may be a server, PC, PAD, cell phone, etc.

The application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with at least the following method steps:

It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1) The application discloses a cooling fan control method, which is applied to a controller in a fuel cell cooling system, wherein the fuel cell cooling system comprises a fuel cell radiator, an air conditioner condenser and a cooling fan combination, the cooling fan combination is fixedly arranged on the outer surface of one side of the fuel cell radiator far away from the air conditioner condenser, the fuel cell radiator is closely adjacent to the air conditioner condenser, the cooling fan combination is used for radiating heat of the fuel cell radiator and the air conditioner condenser, and the cooling fan combination comprises a plurality of fans, and the method comprises the following steps: when the air conditioner is in a working state and the fuel cell is in a non-working state, controlling at least one target fan in the cooling fan combination to run, wherein the distance between the target fan and the air conditioner is smaller than that between the non-target fan and the air conditioner, and the cooling fan combination is formed by the at least one target fan and the at least one non-target fan; controlling a first predetermined number of fans in the cooling fan assembly to operate when both the air conditioner and the fuel cell are in operation, wherein the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell; and controlling a second preset number of fans in the cooling fan combination to run under the condition that the fuel cell is in an operating state and the air conditioner is in a non-operating state, wherein the second preset number is determined by the heat dissipation requirement of the fuel cell. The cooling requirements of the air conditioner and the fuel cell are different, the control of the fan can be carried out according to the respective requirements through logic judgment, the heat dissipation requirements of the air conditioner and the fuel cell are effectively guaranteed, the air conditioner condenser and the fuel cell radiator share one set of fan for heat dissipation, the whole vehicle arrangement space can be saved, and meanwhile, the cost can be reduced.

2) The application discloses a cooling fan control device, which is applied to a controller in a fuel cell cooling system, wherein the fuel cell cooling system comprises a fuel cell radiator, an air conditioner condenser and a cooling fan combination, the cooling fan combination is fixedly arranged on the outer surface of one side of the fuel cell radiator far away from the air conditioner condenser, the fuel cell radiator is closely adjacent to the air conditioner condenser, the cooling fan combination is used for radiating heat of the fuel cell radiator and the air conditioner condenser, the cooling fan combination comprises a plurality of fans, and the device comprises: the first control unit is used for controlling at least one target fan in the cooling fan combination to run under the condition that the air conditioner is in a working state and the fuel cell is in a non-working state, wherein the distance between the target fan and the air conditioner is smaller than that between the non-target fan and the air conditioner, and the cooling fan combination is formed by the at least one target fan and the at least one non-target fan; a second control unit for controlling a first predetermined number of fans in the cooling fan combination to operate in a case where both the air conditioner and the fuel cell are in an operating state, wherein the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell; and a third control unit for controlling a second predetermined number of fans in the cooling fan combination to operate in a case where the fuel cell is in an operating state and the air conditioner is in a non-operating state, wherein the second predetermined number is determined by a heat dissipation requirement of the fuel cell. The cooling requirements of the air conditioner and the fuel cell are different, the control of the fan can be carried out according to the respective requirements through logic judgment, the heat dissipation requirements of the air conditioner and the fuel cell are effectively guaranteed, the air conditioner condenser and the fuel cell radiator share one set of fan for heat dissipation, the whole vehicle arrangement space can be saved, and meanwhile, the cost can be reduced.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cooling fan control method, wherein the method is applied to a controller in a fuel cell cooling system, the fuel cell cooling system further comprises a fuel cell radiator, an air conditioner condenser and a cooling fan combination, wherein the cooling fan combination is fixedly installed on an outer surface of one side of the fuel cell radiator far away from the air conditioner condenser, the fuel cell radiator is closely adjacent to the air conditioner condenser, the cooling fan combination is used for radiating heat of the fuel cell radiator and the air conditioner condenser, and the cooling fan combination comprises a plurality of fans, and the method comprises:

Controlling at least one target fan in the cooling fan combination to run under the condition that an air conditioner is in a working state and a fuel cell is in a non-working state, wherein the distance between the target fan and the air conditioner is smaller than that between a non-target fan and the air conditioner, and the cooling fan combination is formed by at least one target fan and at least one non-target fan;

controlling a first predetermined number of the fans in the cooling fan combination to operate when the air conditioner and the fuel cell are both in an operating state, wherein the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell;

And controlling a second preset number of fans in the cooling fan combination to run under the condition that the fuel cell is in an operating state and the air conditioner is in a non-operating state, wherein the second preset number is determined by the heat dissipation requirement of the fuel cell.

2. The method of claim 1, wherein controlling operation of at least one target fan of the cooling fan combination with the air conditioner in an operational state and the fuel cell in a non-operational state comprises:

acquiring an operation gear of the air conditioner;

Controlling the target fan to operate at a first rotational speed duty ratio under the condition that the operation gear of the air conditioner is in a first gear interval;

and controlling the target fan to operate at a second rotating speed duty ratio under the condition that the running gear of the air conditioner is in a second gear interval, wherein the second rotating speed duty ratio is larger than the first rotating speed duty ratio, and the maximum value of the gear of the first gear interval is smaller than the minimum value of the gear of the second gear interval.

3. The method of claim 1, wherein controlling operation of a first predetermined number of the fans in the cooling fan assembly with both the air conditioner and the fuel cell in operation comprises:

respectively acquiring the heat dissipation requirement of the air conditioner and the heat dissipation requirement of the fuel cell;

Determining the first preset number according to the heat dissipation requirement of the fuel cell and controlling the first preset number of fans in the cooling fan combination to operate under the condition that the heat dissipation requirement of the air conditioner is smaller than the heat dissipation requirement of the fuel cell;

And when the heat dissipation requirement of the air conditioner is greater than or equal to that of the fuel cell, determining the first preset number according to the heat dissipation requirement of the air conditioner, and controlling the first preset number of fans in the cooling fan combination to operate.

4. The method of claim 3, wherein controlling operation of a first predetermined number of the fans in the cooling fan assembly with both the air conditioner and the fuel cell in operation further comprises:

Respectively acquiring a fan rotation speed demand duty ratio of the air conditioner and a fan rotation speed demand duty ratio of the fuel cell;

Determining a third rotation speed duty ratio according to the fan rotation speed demand duty ratio of the fuel cell and controlling the first predetermined number of the fans in the cooling fan combination to operate at the third rotation speed duty ratio in the case that the fan rotation speed demand duty ratio of the air conditioner is smaller than the fan rotation speed demand duty ratio of the fuel cell;

And when the fan rotating speed demand duty ratio of the air conditioner is greater than or equal to the fan rotating speed demand duty ratio of the fuel cell, determining the fan rotating speed demand duty ratio of the air conditioner as the third rotating speed duty ratio, and controlling the first preset number of fans in the cooling fan combination to operate at the third rotating speed duty ratio.

5. The method of claim 4, wherein the fuel cell cooling system further comprises a fuel cell stack, a water pump, a first temperature sensor mounted at a cooling water outlet of the fuel cell stack, a first electrically operated valve connected at a first end to a line connecting a first end of the water pump to a second end of the second electrically operated valve, a second end of the first electrically operated valve connected to a line connecting a first end of the fuel cell radiator to a cooling water inlet of the fuel cell stack, a first end of the second electrically operated valve connected at a second end of the fuel cell radiator, a second end of the second electrically operated valve connected at a first end of the water pump, a second end of the water pump connected at a cooling water outlet of the fuel cell stack, the method further comprising, after determining the first predetermined number of the fans in the cooling fan combination to operate at the third duty cycle according to a fan speed demand duty cycle of the fuel cell:

Acquiring a first real-time difference value between the real-time cooling water outlet temperature of the fuel cell stack and a first outlet water temperature preset value, wherein the real-time cooling water outlet temperature is acquired by the first temperature sensor;

And adjusting the opening degree of the first electric valve and the opening degree of the second electric valve according to the first real-time difference value so as to control the large circulation cooling water flow rate and the small circulation cooling water flow rate of the fuel cell cooling system, wherein the first electric valve controls the small circulation of the fuel cell cooling system, and the first electric valve controls the large circulation of the fuel cell cooling system, wherein the large circulation is a circulation formed by the fuel cell stack, the water pump, the second electric valve and the fuel cell radiator, and the small circulation is a circulation formed by the fuel cell stack, the water pump and the first electric valve.

6. The method of claim 1, wherein the fuel cell cooling system further comprises a second temperature sensor, wherein the second temperature sensor is mounted at a cooling water inlet of the fuel cell stack, wherein controlling a second predetermined number of the fans in the cooling fan assembly to operate with the fuel cell in an active state and the air conditioner in a non-active state comprises:

acquiring a second real-time difference value between the real-time cooling water inlet temperature and a preset inlet temperature value of the fuel cell stack;

and controlling a second preset number of fans in the cooling fan combination to run according to the second real-time difference value, wherein the real-time cooling water inlet temperature is acquired by the second temperature sensor.

7. The method of claim 6, wherein the fuel cell cooling system further comprises a fuel cell stack, a water pump, a first temperature sensor mounted at a cooling water outlet of the fuel cell stack, a first electrically operated valve connected at a first end to a line connecting a first end of the water pump to a second end of the second electrically operated valve connected to a line connecting a first end of the fuel cell radiator to a cooling water inlet of the fuel cell stack, a first end of the second electrically operated valve connected at a second end of the fuel cell radiator, a second end of the second electrically operated valve connected at a first end of the water pump connected at a cooling water outlet of the fuel cell stack, a second end of the water pump connected at a cooling water outlet of the fuel cell stack, the method further comprising, after controlling a second predetermined number of the fans in the cooling fan combination according to the second real-time difference value:

And acquiring a third real-time difference value between the real-time cooling water outlet temperature of the fuel cell stack and a second outlet temperature preset value, and adjusting the opening degree of the first electric valve and the opening degree of the second electric valve according to the third real-time difference value so as to control the flow of the cooling water in the large circulation and the small circulation of the fuel cell cooling system, wherein the large circulation is a circulation formed by the fuel cell stack, the water pump, the second electric valve and the fuel cell radiator, the small circulation is a circulation formed by the fuel cell stack, the water pump and the first electric valve, and the real-time cooling water outlet temperature is acquired by the first temperature sensor.

8. A cooling fan control apparatus, characterized in that the apparatus is applied to a controller in a fuel cell cooling system including a fuel cell radiator, an air conditioning condenser, and a cooling fan combination, wherein the cooling fan combination is fixedly installed on an outer surface of a side of the fuel cell radiator away from the air conditioning condenser, the fuel cell radiator is disposed in close proximity to the air conditioning condenser, the cooling fan combination is used for radiating heat from the fuel cell radiator and the air conditioning condenser, and the cooling fan combination includes a plurality of fans therein, the apparatus comprising:

The first control unit is used for controlling at least one target fan in the cooling fan combination to run when the air conditioner is in a working state and the fuel cell is in a non-working state, wherein the distance between the target fan and the air conditioner is smaller than that between a non-target fan and the air conditioner, and the cooling fan combination is formed by at least one target fan and at least one non-target fan;

a second control unit configured to control a first predetermined number of the fans in the cooling fan combination to operate in a case where the air conditioner and the fuel cell are both in an operating state, wherein the first predetermined number is related to a heat dissipation requirement of the air conditioner and a heat dissipation requirement of the fuel cell;

And a third control unit, configured to control a second predetermined number of the fans in the cooling fan combination to operate when the fuel cell is in an operating state and the air conditioner is in a non-operating state, where the second predetermined number is determined by a heat dissipation requirement of the fuel cell.

9. A fuel cell cooling system, characterized by comprising:

The cooling fan combination is used for radiating the fuel cell radiator and the air conditioner condenser, and comprises a plurality of fans;

A controller for controlling the cooling fan combined operation for executing the cooling fan control method according to any one of claims 1 to 7.

10. The fuel cell cooling system according to claim 9, characterized in that the fuel cell cooling system further comprises:

The fuel cell system comprises a fuel cell stack, a water pump, a first temperature sensor, a second temperature sensor, a first electric valve and a second electric valve, wherein the first temperature sensor is installed at a cooling water outlet of the fuel cell stack, the second temperature sensor is installed at a cooling water inlet of the fuel cell stack, a first end of the first electric valve is connected to a pipeline with a first end of the water pump connected with a second end of the second electric valve, a second end of the first electric valve is connected to a pipeline with a first end of a fuel cell radiator connected with the cooling water inlet of the fuel cell stack, a first end of the second electric valve is connected to a second end of the fuel cell radiator, a second end of the second electric valve is connected to the first end of the water pump, and a second end of the water pump is connected to the cooling water outlet of the fuel cell stack.