CN112259764A - Battery control system, control method thereof and battery control equipment - Google Patents
Battery control system, control method thereof and battery control equipment Download PDFInfo
- Publication number
- CN112259764A CN112259764A CN202011255952.XA CN202011255952A CN112259764A CN 112259764 A CN112259764 A CN 112259764A CN 202011255952 A CN202011255952 A CN 202011255952A CN 112259764 A CN112259764 A CN 112259764A
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- cell stack
- temperature
- control system
- battery control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04365—Temperature; Ambient temperature of other components of a fuel cell or fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04373—Temperature; Ambient temperature of auxiliary devices, e.g. reformers, compressors, burners
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04731—Temperature of other components of a fuel cell or fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04738—Temperature of auxiliary devices, e.g. reformer, compressor, burner
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a battery control system, a control method thereof and battery control equipment. Wherein, this battery control system includes: a fuel cell stack; a heating subsystem for heating the fuel cell stack; the temperature reduction subsystem is used for reducing the temperature of the fuel cell stack when the temperature inside the fuel cell is greater than a preset temperature threshold value; and the controller is respectively connected with the heating subsystem and the cooling subsystem so as to carry out cooling control or heating control on the fuel cell stack. The invention solves the technical problem of poor cooling effect when the fuel cell is cooled in the related art.
Description
Technical Field
The invention relates to the technical field of battery control, in particular to a battery control system, a control method thereof and battery control equipment.
Background
In the related art, hydrogen energy is used as clean energy, and the fuel application efficiency is high and the environmental pollution is less. With the development of fuel cell technology, the requirements on the efficiency of a fuel cell stack, a fan control system, cost and the like are higher and higher, and compared with an air-cooled fuel cell, the water-cooled fuel cell has higher efficiency and is safer on a high-power fuel cell system.
Currently, when a fuel cell is subjected to heat dissipation, the fuel cell controls the rotating speed of a fuel cell fan according to different environmental temperatures, the internal temperature of the fuel cell and the output current density, so that the fuel cell works at a proper temperature point. The excessive temperature of the fuel cell leads to dehydration of the membrane, influences the proton conductivity of the membrane and reduces the performance of the cell; at too low a temperature, the catalyst activity does not reach an optimum value. The fan adjusting system does not reach the optimal working temperature of 65 ℃ of the fuel cell when the fuel cell is started, so that resource waste is caused, air entering the fuel cell is not filtered, the service life of the fuel cell is influenced, the service life of the fuel cell is easy to reduce, and the cooling effect is poor.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a battery control system, a control method thereof and battery control equipment, which are used for at least solving the technical problem of poor cooling effect when a fuel battery is cooled in the related art.
According to an aspect of an embodiment of the present invention, there is provided a battery control system including: a fuel cell stack; a heating subsystem that heats the fuel cell stack; the cooling subsystem is used for cooling the fuel cell stack when the temperature in the fuel cell is greater than a preset temperature threshold; and the controller is respectively connected with the heating subsystem and the cooling subsystem so as to carry out cooling control or heating control on the fuel cell stack.
Optionally, the heating subsystem comprises: a water tank connected to the fuel cell stack for storing pure water; the heater is connected with the water tank and is used for heating the pure water; and the water pump is connected with the heater and conducts the heated pure water to the fuel cell stack so as to heat the fuel cell stack.
Optionally, the heating subsystem further comprises: the electromagnetic valve is connected with the water pump and used for controlling the water flow transmitted to the fuel cell stack; and the transmission pipeline is respectively connected with the electromagnetic valve and the fuel cell stack and is used for transmitting the heated pure water to the fuel cell stack.
Optionally, the battery control system further comprises: and the lithium battery is used for providing electric energy for each device in the battery control system when the heater heats the pure water.
Optionally, the battery control system further comprises: the first switch is used for controlling the connection and disconnection of the lithium battery, wherein the first switch is connected when the fuel cell stack is heated, and the first switch is disconnected when the fuel cell stack is cooled; and the second switch is used for controlling the charging state of the lithium battery by the fuel cell stack, wherein after the heating of the fuel cell stack is finished, the second switch is closed, and the lithium battery is charged.
Optionally, the battery control system further comprises: the first temperature sensing module is arranged in the fuel cell stack and used for sampling the temperature of the middle bipolar plate of the fuel cell stack to obtain the temperature in the fuel cell.
Optionally, the cooling subsystem comprises: the fan is used for cooling the pure water when the temperature in the fuel cell is greater than a preset temperature threshold value; and the water pump is used for adjusting the running frequency when the temperature inside the fuel cell is greater than a preset temperature threshold value so as to reduce the temperature of the pure water by increasing the water flow speed.
Optionally, the battery control system further comprises: and the third switch is used for controlling the working state of the fan, wherein when the fuel cell stack is heated, the third switch is disconnected, the fan does not work, and when the fuel cell stack is cooled, the third switch is closed, and the fan starts to work.
Optionally, the battery control system further comprises: and the second temperature sensing module is arranged on the water tank and used for sampling the temperature of the pure water in the water tank.
Optionally, the fuel cell stack intermediate bipolar plate comprises: the hydrogen purification device comprises an air channel, a hydrogen channel, a pure water channel and a tail gas channel.
According to another aspect of the embodiments of the present invention, there is also provided a control method of a battery control system, applied to any one of the above battery control systems, the control method including: detecting a temperature of the fuel cell stack; when the temperature is lower than a preset temperature threshold value, controlling a heater to heat pure water in a water tank, and introducing the heated pure water into the fuel cell stack to heat the fuel cell stack; and when the temperature is higher than or equal to a preset temperature threshold value, controlling a fan to work so as to cool the fuel cell stack.
Optionally, the step of heat treating the fuel cell stack comprises: calculating a first temperature difference value between the temperature of the fuel cell stack and the preset temperature threshold; calculating the PWM duty ratio of the water pump by adopting a first preset adjusting algorithm based on the first temperature difference value; adjusting water flow of the water pump based on a first PWM duty cycle of the water pump; controlling the heater to heat the pure water in the water tank; and controlling a lithium battery to provide electric energy for the heater.
Optionally, the step of performing a temperature reduction process on the fuel cell stack includes: calculating a second temperature difference value between the temperature of the fuel cell stack and the preset temperature threshold; calculating the output PWM duty ratio of the water pump by adopting a second preset adjusting algorithm based on the second temperature difference value; based on the output PWM duty ratio of the water pump, adjusting the water flow of the water pump so as to take the heat generated by the fuel cell stack during operation out of the electric stack by pure water; and controlling the fan to cool the fuel cell stack.
According to another aspect of the embodiments of the present invention, there is also provided a battery control apparatus including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute the control method of the battery control system of any one of the above via execution of the executable instructions.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, and when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the control method of the battery control system according to any one of the above.
In the embodiment of the invention, the fuel cell stack is heated by the heating subsystem, the fuel cell stack is cooled by the cooling subsystem when the temperature in the fuel cell is greater than a preset temperature threshold, and the fuel cell stack is controlled to be cooled or heated by the controller. In this embodiment, can be according to the temperature feedback data, quick accurate control cooling subsystem (including adopting the water pump to carry out the water-cooling and adopting fan equipment to carry out the forced air cooling) carries out the cooling processing, has realized the rapidity of high-power fuel cell system control to solve among the related art when fuel cell cools down, the relatively poor technical problem of cooling effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of an alternative battery control system according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an alternative battery control system according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described 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.
Example one
Embodiments of the present invention may be applied to fuel cell stack systems, and the types of fuel cell stacks include, but are not limited to: the invention discloses an air-cooled fuel cell stack, a water-cooled fuel cell stack and a proton exchange membrane fuel cell stack.
In embodiments of the present invention, fuel cell stack application devices include, but are not limited to: passenger cars, sedans, logistics vehicles, unmanned vehicles, and the like.
Fuel cell stacks include, but are not limited to: the membrane electrode assembly comprises a membrane electrode, a proton exchange membrane, a polar plate, a catalyst, a gas diffusion layer and a battery electric pile, wherein the battery electric pile can be formed by overlapping a plurality of single batteries in a series/parallel mode. The fuel cell stack related to the embodiment of the invention has the same meaning as the fuel cell stack.
According to an aspect of an embodiment of the present invention, there is provided a battery control system including:
a fuel cell stack;
a heating subsystem for heating the fuel cell stack;
the temperature reduction subsystem is used for reducing the temperature of the fuel cell stack when the temperature inside the fuel cell is greater than a preset temperature threshold value;
and the controller is respectively connected with the heating subsystem and the cooling subsystem so as to carry out cooling control or heating control on the fuel cell stack.
Above-mentioned battery control system can heat the fuel cell stack through heating subsystem, adopts the cooling subsystem when the inside temperature of fuel cell is greater than preset temperature threshold, cools down the fuel cell stack, carries out cooling control or heating control to the fuel cell stack through the controller. In this embodiment, can be according to the temperature feedback data, quick accurate control cooling subsystem (including adopting the water pump to carry out the water-cooling and adopting fan equipment to carry out the forced air cooling) carries out the cooling processing, has realized the rapidity of high-power fuel cell system control to solve among the related art when fuel cell cools down, the relatively poor technical problem of cooling effect.
Optionally, the heating subsystem comprises: a water tank connected to the fuel cell stack for storing pure water; the heater is connected with the water tank and used for heating the pure water; and the water pump is connected with the heater and is used for conducting the heated pure water to the fuel cell stack so as to heat the fuel cell stack.
The pure water may be deionized water, indicating water after removing impurities in the form of ions. A large amount of pure water can be stored in the water tank, and water cooling is realized through the water pump and the transmission pipeline. The water pump may be a deionized water pump or a pure water pump, and pumps the pure water in the water tank and conveys the pure water to a transmission pipeline (water conveying pipeline/cooling pipeline).
In the embodiment of the invention, the preheating treatment and the water-cooling temperature reduction treatment are mainly carried out by water cooling, so that the temperature control of the water-cooling fuel cell is realized, and meanwhile, the air-cooling temperature reduction treatment can be carried out by combining a fan and the like.
The method is characterized in that pure water is utilized to conduct heat to the fuel cell through cooperation of a fan, a heater, a water pump and the like for preheating treatment before starting, and when the temperature of the electric pile is higher than a preset temperature threshold value due to the fact that the fuel cell works, the water pump, the fan and the like are used for conducting heat dissipation treatment.
The operating temperature of the fuel cell has a certain preferred range (e.g., set at about 65 c), and the cell operates most efficiently within this preferred range. Therefore, the fuel cell needs to be preheated before working, and a heater needs to be added around the water tank to ensure that the temperature of the electric pile reaches the optimal range of the working temperature, so that the fuel cell is heated before being started, and the effect of heating the fuel cell pile is achieved.
To reach a temperature range close to the preferred temperature range for fuel cell operation, the stack needs to be heated; during the chemical reaction of the stack, a large amount of heat is generated, and the membrane electrode may fail due to the over-high temperature in the stack, and may be burnt seriously, so that the fuel cell needs to be heated and also needs to dissipate heat during the normal operation.
Optionally, the heating subsystem further comprises: the electromagnetic valve is connected with the water pump and used for controlling the water flow transmitted to the fuel cell stack; and the transmission pipeline is respectively connected with the electromagnetic valve and the fuel cell stack and is used for transmitting the heated pure water to the fuel cell stack.
The delivery water flow and the water flow speed can be controlled by the electromagnetic valve.
In an embodiment of the present invention, the battery control system further includes: and the lithium battery provides electric energy for each device in the battery control system when the heater heats the pure water.
In an embodiment of the present invention, the battery control system further includes: the first switch is used for controlling the connection and disconnection of the lithium battery, wherein the first switch is connected when the fuel cell stack is heated, and the first switch is disconnected when the fuel cell stack is cooled; and the second switch is used for controlling the charging state of the fuel cell stack to the lithium battery, wherein after the heating of the fuel cell stack is finished, the second switch is closed to charge the lithium battery.
In the heating stage, the lithium battery is used as a power supply of the system, and the controller sends out a control signal to connect the first switch to the lithium battery. When the heater heats the pure water, namely the lithium battery is required to provide electric energy in the preheating stage of the fuel cell, and after the heating is finished and the output of the fuel cell is stable, the controller controls the second switch to enable the fuel cell to charge the lithium battery.
Optionally, the battery control system further includes: the first temperature sensing module is arranged in the fuel cell stack and used for sampling the temperature of the middle bipolar plate of the fuel cell stack to obtain the temperature in the fuel cell.
The first temperature sensing module can be a temperature sensor or a temperature sensing packet. The first temperature sensing module samples the temperature of the middle bipolar plate of the fuel cell, the temperature inside the fuel cell can be quickly and accurately measured, the water flow rate of the water pump and the fan auxiliary cooling can be quickly and accurately controlled according to the feedback parameters of the first temperature sensing module, and the rapidity of controlling a high-power fuel cell system is realized.
Optionally, the cooling subsystem includes: the fan is used for cooling the pure water when the temperature in the fuel cell is greater than a preset temperature threshold value; and the water pump adjusts the running frequency when the temperature inside the fuel cell is greater than a preset temperature threshold value so as to reduce the temperature of the pure water by increasing the water flow speed.
Optionally, the battery control system further includes: and the third switch is used for controlling the working state of the fan, wherein when the fuel cell stack is heated, the third switch is switched off, the fan does not work, and when the fuel cell stack is cooled, the third switch is switched on, and the fan starts to work.
In an embodiment of the present invention, the battery control system further includes: and the second temperature sensing module is arranged on the water tank and used for sampling the temperature of the pure water in the water tank.
The heat dissipation stage needs the fan to cool off for the pure water, controller control water pump PWM, the duty cycle of the PWM of water pump increases along with the rising of temperature, make pure water velocity of flow accelerate along with the rising of temperature, play quick radiating effect, this stage, the controller is controlling the pure water velocity of flow and the fan speed of flow of water pump simultaneously and is cooling down the pile system, the second temperature perception module of subsides on the water tank provides the feedback signal of the PWM signal of control fan speed, the first temperature sensor of subsides inside fuel cell pile provides the feedback signal of the PWM signal of control water pump discharge.
Optionally, the fuel cell stack intermediate bipolar plate comprises: the hydrogen purification device comprises an air channel, a hydrogen channel, a pure water channel and a tail gas channel.
The fuel cell stack is closed, an air channel, a hydrogen channel, a deionization channel and a tail gas channel are reserved on the bipolar plates, gaps are reserved between the bipolar plates, and if water, oxygen and the like in the air enter the fuel cell stack, the bipolar plates are easily corroded, and the working efficiency and the service life of the fuel cell are influenced.
Fig. 1 is a schematic diagram of an alternative battery control system according to an embodiment of the present invention, which may include, as shown in fig. 1: the fuel cell system comprises a fuel cell 101, a first temperature sensor 102, a water tank 103, a heater 104, a water pump 105, an electromagnetic valve 106, a transmission pipeline 107, a first switch 108, a fan 109, a controller 110, a lithium battery 111, a load 112, a second switch 113, a second temperature sensor 114 and a third switch 115.
The system is preheated before starting by transferring heat to the fuel cell 101 with pure water mainly by the fan 109 in cooperation with the heater 104, the water pump 105, and the like, and dissipates heat when the operating temperature of the fuel cell 101 rises. In order to reach a temperature range close to the optimum temperature range for fuel cell operation, the stack needs to be heated; during the chemical reaction of the stack, a large amount of heat is generated, and the membrane electrode may fail due to the over-high temperature in the stack, and may be burnt seriously, so that the fuel cell needs to be heated and also needs to dissipate heat during the normal operation. In the heating phase, the lithium battery 111 is used as a power supply of the system, and the controller 110 sends a control signal to connect the first switch SW1 to the lithium battery. When the heater 104 heats the pure water, i.e. the lithium battery is required to provide power in the preheating stage of the fuel cell, after the heating is finished and the output of the fuel cell is stable, the controller controls the second switch SW2 to make the fuel cell charge the lithium battery 111. In the stage of heat dissipation, the fan 109 is needed to cool pure water, the controller 110 controls the water pump PWM, the duty ratio of the pure water pump PWM is increased along with the rise of temperature, so that the flow rate of pure water is increased along with the rise of temperature, and the effect of rapid heat dissipation is achieved, in this stage, the controller 110 simultaneously controls the flow rate of pure water of the water pump 105 and the rotation speed of the fan 109 to cool the electric pile system, the second temperature sensor 114 attached to the water tank provides a feedback signal of the PWM signal for controlling the rotation speed of the fan, and the first temperature sensor 102 attached to the inside of the fuel cell electric pile provides a feedback signal of the PWM signal for controlling the water flow rate of the water.
The fuel cell stack is closed, an air channel, a hydrogen channel, a pure channel and a tail gas channel are reserved on the bipolar plates, gaps are reserved between the bipolar plates, and if water, oxygen and the like in the air enter the fuel cell stack, the bipolar plates are easily corroded, and the working efficiency and the service life of the fuel cell are influenced.
The rotating speed of the fan 109 is provided with a feedback signal of a PWM signal for controlling the rotating speed of the fan by a second temperature sensor 114 attached to the water tank, in the heating stage of the system, the third switch is switched off, the fan 109 does not work, when the temperature of pure water is higher than the preferred temperature, the feedback signal of the second temperature sensor 114 is fed back to the controller, the controller controls the third switch to be switched off, the fan 109 starts to work, the PWM duty ratio of the fan 109 changes along with the temperature of the water tank 103, the PWM duty ratio changes linearly along with the temperature of the water tank, the temperature of the water tank 103 rises, the rotating speed of the fan is increased, heat generated when the fuel cell works flows out of the stack in time, and the system can.
Before the system is started, temperature sampling data of the controller and the water pump control system are subjected to zero clearing processing, and then sampling is carried out again. The difference value between the temperature of the bipolar plate in the middle of the fuel cell and the optimal working temperature of the bipolar plate is used as deviation, PID operation is carried out based on the deviation, the optimal PWM duty ratio of the pure water pump is calculated, the flow rate of output pure water is optimal, the control of the water pump can be quicker, and the following performance of the temperature change in the fuel cell is improved.
When the temperature in the fuel cell stack is lower than the optimal temperature, the system needs to enter a heating stage, the heater is controlled by a controller, a lithium battery supplies power, the heater heats a water tank, the difference between the optimal working temperature of the fuel cell and the temperature T of a middle bipolar plate of the fuel cell is set as the current Xn, the error of the previous time before the current difference is X (N-1), the error of the second time before the current difference is X (N-2), the PWM duty ratio of the current water pump is Nn, the previous input PWM duty ratio of the current water pump is N (N-1), Kp is a proportional regulating coefficient of the PWM duty ratio Nn, Kd is a differential regulating coefficient of Nn, Ki is an integral regulating coefficient of Nn, and the PID algorithm of the heating stage is as follows:
Nn＝N(n-1)+Kp*(Xn-X(N-1))+Kd*(Xn-2*X(n-1)+X(n-2))-Ki*Xn。
when the temperature in the fuel cell stack is higher than 65 ℃, the system needs to enter a heat dissipation stage, and the difference between the temperature T of the middle bipolar plate of the fuel cell and the optimal working temperature of the fuel cell is set as the current Xn, the PID algorithm of the heat dissipation stage is as follows:
Nn＝N(n-1)+Kp*(Xn-X(N-1))+Kd*(Xn-2*X(n-1)+X(n-2))+Ki*Xn。
when the temperature in the fuel cell stack is higher than or equal to the optimal working temperature, the heating stage is not needed, and only the pure water pump is controlled by utilizing the heat dissipation PID algorithm to output the PWM duty ratio, so that the flow speed of the pure water is controlled, and the heat generated by the fuel cell during working is quickly taken out of the stack by the pure water.
Through the embodiment, can adopt the mode that water-cooling and air-cooling combine, carry out accuracy, stability control to the pure water pump, to heating before fuel cell starts, play the effect of heating for fuel cell stack, and adopt the temperature of bipolar plate in the middle of the temperature perception module sampling fuel cell, the inside temperature of fuel cell of record of quick accuracy, the control water pump water flow rate that can be quick accurate according to the feedback data of temperature perception module, combine the supplementary cooling of fan, the temperature control of high-power fuel cell system has been realized, the rapidity of control.
Example two
In accordance with an embodiment of the present invention, there is provided an embodiment of a control method for a battery control system, it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that presented herein.
The embodiment of the invention provides a control method of a battery control system, which is applied to the battery control system in any one of the embodiments.
Fig. 2 is a flowchart of a control method of an alternative battery control system according to an embodiment of the present invention, as shown in fig. 2, the method includes the following steps:
step S202, detecting the temperature of the fuel cell stack;
step S204, when the temperature is lower than a preset temperature threshold value, controlling a heater to heat pure water in a water tank, and introducing the heated pure water into the fuel cell stack to heat the fuel cell stack;
and step S206, when the temperature is higher than or equal to the preset temperature threshold value, controlling the fan to work so as to cool the fuel cell stack.
Through the above steps, the temperature of the fuel cell stack can be detected; when the temperature is lower than a preset temperature threshold value, controlling a heater to heat pure water in a water tank, and introducing the heated pure water into the fuel cell stack to heat the fuel cell stack; and when the temperature is higher than or equal to the preset temperature threshold value, controlling the fan to work so as to cool the fuel cell stack. In this embodiment, can be according to the temperature feedback data, quick accurate control cooling subsystem (including adopting the water pump to carry out the water-cooling and adopting fan equipment to carry out the forced air cooling) carries out the cooling processing, has realized the rapidity of high-power fuel cell system control to solve among the related art when fuel cell cools down, the relatively poor technical problem of cooling effect.
Optionally, the step of performing a heating process on the fuel cell stack includes: calculating a first temperature difference value between the temperature of the fuel cell stack and a preset temperature threshold value; calculating the PWM duty ratio of the water pump by adopting a first preset adjusting algorithm based on the first temperature difference value; adjusting the water flow of the water pump based on the first PWM duty ratio of the water pump; controlling a heater to heat the pure water in the water tank; and controlling the lithium battery to provide electric energy for the heater.
In an embodiment of the present invention, the step of performing a temperature reduction process on the fuel cell stack includes: calculating a second temperature difference value between the temperature of the fuel cell stack and a preset temperature threshold value; calculating the output PWM duty ratio of the water pump by adopting a second preset adjusting algorithm based on the second temperature difference value; based on the output PWM duty ratio of the water pump, regulating the water flow of the water pump so as to take the heat generated by the fuel cell stack during working out of the electric stack by pure water; and controlling the fan to cool the fuel cell stack.
According to another aspect of the embodiments of the present invention, there is also provided a battery control apparatus including: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the control method of the battery control system of any one of the above via execution of the executable instructions.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which includes a stored computer program, wherein when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the control method of the battery control system according to any one of the above.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: detecting a temperature of the fuel cell stack; when the temperature is lower than a preset temperature threshold value, controlling a heater to heat pure water in a water tank, and introducing the heated pure water into the fuel cell stack to heat the fuel cell stack; and when the temperature is higher than or equal to the preset temperature threshold value, controlling the fan to work so as to cool the fuel cell stack.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (15)
1. A battery control system, comprising:
a fuel cell stack;
a heating subsystem that heats the fuel cell stack;
the cooling subsystem is used for cooling the fuel cell stack when the temperature in the fuel cell is greater than a preset temperature threshold;
and the controller is respectively connected with the heating subsystem and the cooling subsystem so as to carry out cooling control or heating control on the fuel cell stack.
2. The battery control system of claim 1, wherein the heating subsystem comprises:
a water tank connected to the fuel cell stack for storing pure water;
the heater is connected with the water tank and is used for heating the pure water;
and the water pump is connected with the heater and conducts the heated pure water to the fuel cell stack so as to heat the fuel cell stack.
3. The battery control system of claim 2, wherein the heating subsystem further comprises:
the electromagnetic valve is connected with the water pump and used for controlling the water flow transmitted to the fuel cell stack;
and the transmission pipeline is respectively connected with the electromagnetic valve and the fuel cell stack and is used for transmitting the heated pure water to the fuel cell stack.
4. The battery control system according to claim 3, further comprising:
and the lithium battery is used for providing electric energy for each device in the battery control system when the heater heats the pure water.
5. The battery control system according to claim 4, further comprising:
the first switch is used for controlling the connection and disconnection of the lithium battery, wherein the first switch is connected when the fuel cell stack is heated, and the first switch is disconnected when the fuel cell stack is cooled;
and the second switch is used for controlling the charging state of the lithium battery by the fuel cell stack, wherein after the heating of the fuel cell stack is finished, the second switch is closed, and the lithium battery is charged.
6. The battery control system according to claim 1, further comprising:
the first temperature sensing module is arranged in the fuel cell stack and used for sampling the temperature of the middle bipolar plate of the fuel cell stack to obtain the temperature in the fuel cell.
7. The battery control system of claim 6, wherein the cool down subsystem comprises:
the fan is used for cooling the pure water when the temperature in the fuel cell is greater than a preset temperature threshold value;
and the water pump is used for adjusting the running frequency when the temperature inside the fuel cell is greater than a preset temperature threshold value so as to reduce the temperature of the pure water by increasing the water flow speed.
8. The battery control system according to claim 7, further comprising:
and the third switch is used for controlling the working state of the fan, wherein when the fuel cell stack is heated, the third switch is disconnected, the fan does not work, and when the fuel cell stack is cooled, the third switch is closed, and the fan starts to work.
9. The battery control system according to claim 7, further comprising:
and the second temperature sensing module is arranged on the water tank and used for sampling the temperature of the pure water in the water tank.
10. The cell control system of claim 7, wherein the fuel cell stack intermediate bipolar plate comprises:
the hydrogen purification device comprises an air channel, a hydrogen channel, a pure water channel and a tail gas channel.
11. A control method of a battery control system, characterized by being applied to the battery control system according to any one of claims 1 to 10, the control method comprising:
detecting a temperature of the fuel cell stack;
when the temperature is lower than a preset temperature threshold value, controlling a heater to heat pure water in a water tank, and introducing the heated pure water into the fuel cell stack to heat the fuel cell stack;
and when the temperature is higher than or equal to a preset temperature threshold value, controlling a fan to work so as to cool the fuel cell stack.
12. The control method according to claim 11, wherein the step of subjecting the fuel cell stack to a heating process includes:
calculating a first temperature difference value between the temperature of the fuel cell stack and the preset temperature threshold;
calculating the PWM duty ratio of the water pump by adopting a first preset adjusting algorithm based on the first temperature difference value;
adjusting water flow of the water pump based on a first PWM duty cycle of the water pump;
controlling the heater to heat the pure water in the water tank;
and controlling a lithium battery to provide electric energy for the heater.
13. The control method according to claim 11, wherein the step of performing the temperature reduction process on the fuel cell stack includes:
calculating a second temperature difference value between the temperature of the fuel cell stack and the preset temperature threshold;
calculating the output PWM duty ratio of the water pump by adopting a second preset adjusting algorithm based on the second temperature difference value;
based on the output PWM duty ratio of the water pump, adjusting the water flow of the water pump so as to take the heat generated by the fuel cell stack during operation out of the electric stack by pure water;
and controlling the fan to cool the fuel cell stack.
14. A battery control apparatus, characterized by comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the control method of the battery control system of any one of claims 11 to 13 via execution of the executable instructions.
15. A computer-readable storage medium, comprising a stored computer program, wherein when the computer program runs, the computer-readable storage medium controls an apparatus to execute the control method of the battery control system according to any one of claims 11 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255952.XA CN112259764A (en) | 2020-11-11 | 2020-11-11 | Battery control system, control method thereof and battery control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255952.XA CN112259764A (en) | 2020-11-11 | 2020-11-11 | Battery control system, control method thereof and battery control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112259764A true CN112259764A (en) | 2021-01-22 |
Family
ID=74265534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011255952.XA Pending CN112259764A (en) | 2020-11-11 | 2020-11-11 | Battery control system, control method thereof and battery control equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112259764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411165A (en) * | 2021-12-31 | 2022-04-29 | 佛山仙湖实验室 | PEM water electrolysis hydrogen production water body temperature control method, system, equipment and medium |
-
2020
- 2020-11-11 CN CN202011255952.XA patent/CN112259764A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411165A (en) * | 2021-12-31 | 2022-04-29 | 佛山仙湖实验室 | PEM water electrolysis hydrogen production water body temperature control method, system, equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20170365901A1 (en) | Warm-up apparatus for fuel cell for vehicle | |
| CN106558713B (en) | Low-temperature starting system and operation method for fuel cell | |
| JP6252595B2 (en) | FUEL CELL SYSTEM AND CONTROL METHOD FOR FUEL CELL SYSTEM | |
| JP2007280827A (en) | Temperature control system for fuel cell | |
| KR101835186B1 (en) | Fuel cell system and control method for fuel cell system | |
| KR101822245B1 (en) | Control method of cooling pump for fuel cell system | |
| WO2013108369A1 (en) | Fuel cell system | |
| CN112259764A (en) | Battery control system, control method thereof and battery control equipment | |
| CN105190976A (en) | Fuel-cell system and method for controlling fuel-cell system | |
| US11581554B2 (en) | Cooling control system and method of fuel cell | |
| JP2002044807A (en) | Power supply for electric vehicle | |
| JP2014157832A (en) | Fuel cell system | |
| CN214203751U (en) | Battery control system | |
| JP6515775B2 (en) | Fuel cell system | |
| CN111630697A (en) | Fuel cell system with improved gas diffusion layer and motor vehicle with fuel cell system | |
| US20210257632A1 (en) | Fuel cell cooling system and control method of the same | |
| CN113054218B (en) | Thermal management system and control method of fuel cell | |
| JP2009283210A (en) | Fuel cell system | |
| US20150345500A1 (en) | Motor torque control method, apparatus, and computer readable medium for air blower | |
| JP2013021803A (en) | Electric vehicle drive system | |
| CN113054223B (en) | Thermal management system and control method of fuel cell | |
| US11811113B2 (en) | Operating method of fuel cell system | |
| JP2012003944A (en) | Cooling method of fuel cell and fuel cell system | |
| CN107069145B (en) | Power battery heating device in electric automobile | |
| KR20240084335A (en) | Fuel cell electric vehicle and method controlling for the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |