CN110745033A - Fuel cell vehicle starting method and device - Google Patents
Fuel cell vehicle starting method and device Download PDFInfo
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- CN110745033A CN110745033A CN201810799184.0A CN201810799184A CN110745033A CN 110745033 A CN110745033 A CN 110745033A CN 201810799184 A CN201810799184 A CN 201810799184A CN 110745033 A CN110745033 A CN 110745033A
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The invention relates to a fuel cell vehicle starting method and a device, the method detects the current state of charge of a power battery and judges whether the current state of charge of the power battery is larger than a set minimum state of charge value: if the current charge state value is larger than the set minimum charge state value, controlling the whole vehicle to carry out low-temperature cold start; the low temperature cold start includes: the power cell heats the fuel cell, and after the fuel cell is started, the fuel cell generates electricity to supply a load. The invention fully considers the fuel cell state, the power cell state, the motor power demand and the vehicle accessory power, thereby not only ensuring the power demand of the vehicle, but also protecting the fuel cell and the power cell. The control mode can not only ensure that the fuel cell works better and improve the durability and the reliability of the fuel cell, but also meet the power requirement of the whole vehicle and protect the power cell.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a fuel cell vehicle starting method and device.
Background
Under the dual pressure of energy and environment, fuel cell vehicles are the development direction of the automobile industry in the future, and are also the focus of research in the vehicle field. Compared with a pure electric vehicle, the fuel cell vehicle is mainly provided with a fuel cell, a DC/DC and a hydrogen system, wherein the hydrogen system is responsible for providing hydrogen for the fuel cell, and the DC/DC is responsible for loading and unloading the fuel cell.
A fuel cell is a power generation device that directly converts chemical energy stored in a fuel and an oxidant into electrical energy. The fuel can be H2、NH3、N2H2The hydrocarbon is rich in H after reforming2The reforming gas and the oxidizing agent can be pure O2Or air.
When the fuel cell is in a low temperature state, the fuel cell cannot be started; when the power battery is in a low-temperature state, the power battery cannot be charged or the charging efficiency is extremely low.
In general, the starting method is that the power battery is self-heated, when the temperature of the power battery is increased to be capable of charging, the fuel battery is heated to start the fuel battery, and after the temperature of the fuel battery is increased and started, the fuel battery generates power to supply to a load. In the process, the self-heating process of the power battery is slow, and the speed of the low-temperature cold start program of the whole vehicle is seriously influenced.
Disclosure of Invention
The invention aims to provide a fuel cell vehicle starting method and a fuel cell vehicle starting device, which are used for solving the problem that the low-temperature starting speed of the whole vehicle is low in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention provides a fuel cell vehicle starting method, which comprises the following steps:
detecting the current state of charge of the power battery, and judging whether the current state of charge of the power battery is larger than a set minimum state of charge value: if the current charge state value is larger than the set minimum charge state value, controlling the whole vehicle to carry out low-temperature cold start; the low temperature cold start includes: the power cell heats the fuel cell, and after the fuel cell is started, the fuel cell generates electricity to supply a load.
The invention also provides a fuel cell vehicle starting device, which comprises a processor, wherein the processor is used for executing the instructions to realize the following method:
detecting the current state of charge of the power battery, and judging whether the current state of charge of the power battery is larger than a set minimum state of charge value: if the current charge state value is larger than the set minimum charge state value, controlling the whole vehicle to carry out low-temperature cold start; the low temperature cold start includes: the power cell heats the fuel cell, and after the fuel cell is started, the fuel cell generates electricity to supply a load.
The invention has the beneficial effects that:
according to the current charge state of the power battery, whether the whole vehicle is subjected to low-temperature cold start is controlled under the condition that the charge state of the power battery meets the requirement, wherein the low-temperature cold start is that the power battery directly heats the fuel battery, and after the fuel battery is started, the fuel battery generates electricity to supply a load. The fuel cell is directly heated by the power cell in the process, the low-temperature cold start program is quick, the power requirement of the whole vehicle is met, the power cell is protected, and the durability and the reliability of the fuel cell are improved.
As a further improvement of the method and the device, in order to realize safe and reliable driving of the whole vehicle, the method further comprises the following steps of judging whether the current state of charge of the power battery is smaller than a set maximum state of charge value: if the current charge state value is larger than the set maximum charge state value, controlling the whole vehicle to carry out low-temperature cold start while driving; if the temperature of the power battery is lower than or equal to the set maximum charge state value, controlling the whole vehicle to carry out low-temperature cold start, and controlling the whole vehicle to drive after the temperature of the power battery is higher than the set temperature start value; wherein the set maximum state of charge value is greater than the set minimum state of charge value. Whether the whole vehicle runs or not is controlled according to the charge state of the power battery, and the running safety of the whole vehicle is further ensured.
As a further improvement of the method and the device, in order to protect the power battery, if the current state of charge of the power battery is less than or equal to the set minimum state of charge value, the gun insertion charging is controlled. When the current charge state of the power battery is too low, the power battery is controlled to be charged firstly, so that the reliable realization of the low-temperature cold start process is ensured.
As a further improvement of the method and the device, in order to ensure the driving safety, the set maximum state of charge value is the state of charge value of the power battery required when the average driving power requirement of the whole vehicle and the temperature of the power battery reach the set temperature starting value are considered.
As a further improvement of the method and the device, in order to ensure the driving safety, the set minimum state of charge value is the state of charge value of the power battery which is required when the temperature of the power battery reaches the set temperature starting value without considering the average driving power requirement of the whole vehicle.
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FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention provides a fuel cell vehicle starting device which comprises a processor, wherein the processor is used for executing instructions to realize the fuel cell vehicle starting method. In order to make the objects, technical solutions and advantages of the present invention more clear, the method is further described in detail with reference to fig. 1 and the embodiments.
Detecting the current state of charge of the power battery, and judging the current state of charge of the power battery:
1. if the current state of charge of the power battery is smaller than or equal to the set minimum state of charge value SOC _2, namely the current SOC is smaller than or equal to the SOC _2, the current electric quantity of the power battery is too small, gun insertion charging is needed, and a low-temperature cold start program is not carried out at the moment.
2. If the current state of charge of the power battery is larger than the set minimum state of charge value SOC _2, the current electric quantity of the power battery can meet the requirement, and the whole vehicle can be controlled to carry out a low-temperature cold start program. However, at this time, the current state of charge of the battery needs to be further judged:
1) if the state of charge of the power battery is larger than a set maximum state of charge value SOC _1 (the set maximum state of charge value SOC _1> is set as a minimum state of charge value SOC _2), namely SOC _1< the current SOC, which indicates that the current electric quantity of the power battery is enough, the whole vehicle can carry out low-temperature cold start while driving;
2) if the state of charge of the power battery is less than or equal to the maximum state of charge value SOC _1, namely the SOC _2 is smaller than the current SOC and is less than or equal to the SOC _1, the whole vehicle needs to be subjected to a low-temperature cold start program, and the vehicle can be driven only after the temperature of the power battery reaches a set temperature start value T _ 1.
Here, the low-temperature cold start refers to heating of the fuel cell by the power cell, and power generation of the fuel cell after the fuel cell is started up to supply a load.
When the automobile is in the state 1) and the state 2), the rocker switch FC is turned on, the whole automobile enters a low-temperature cold start program, the power battery heating relay is closed, the air conditioner is started to operate, the whole automobile sends an FC starting command, the FC is turned on and operates according to a certain power, when the temperature of the power battery is high enough and reaches a set temperature start value T _1, the low-temperature cold start program is ended, and the whole automobile operates according to a normal program.
Setting a maximum state of charge value SOC _1 as a state of charge value of a power battery required when the average driving power requirement of the whole vehicle and the temperature of the power battery reach a set temperature starting value are considered; and setting the minimum state of charge value SOC _2 to only consider the state of charge value of the power battery required when the temperature of the power battery reaches a set temperature starting value without considering the average driving power requirement of the whole vehicle.
In the whole view, the method fully considers the state of the fuel cell, the state of the power battery, the power requirement of the motor and the accessory power of the whole vehicle, thereby not only ensuring the power requirement of the whole vehicle, but also protecting the fuel cell and the power battery. The control mode can lead the fuel cell to work better and improve the durability and the reliability of the fuel cell. But also can meet the power requirement of the whole vehicle and protect the power battery.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. A fuel cell vehicle starting method characterized by comprising the steps of:
detecting the current state of charge of the power battery, and judging whether the current state of charge of the power battery is larger than a set minimum state of charge value: if the current charge state value is larger than the set minimum charge state value, controlling the whole vehicle to carry out low-temperature cold start;
the low temperature cold start includes: the power cell heats the fuel cell, and after the fuel cell is started, the fuel cell generates electricity to supply a load.
2. The fuel cell vehicle starting method according to claim 1, further comprising determining whether the current state of charge of the power cell is less than a set maximum state of charge value:
if the current charge state value is larger than the set maximum charge state value, controlling the whole vehicle to carry out low-temperature cold start while driving;
if the temperature of the power battery is lower than or equal to the set maximum charge state value, controlling the whole vehicle to carry out low-temperature cold start, and controlling the whole vehicle to drive after the temperature of the power battery is higher than the set temperature start value;
wherein the set maximum state of charge value is greater than the set minimum state of charge value.
3. The fuel cell vehicle startup method of claim 1 wherein if the current state of charge of the power cell is less than or equal to a set minimum state of charge value, then controlling the gun insertion charging.
4. The fuel cell vehicle startup method of claim 2 wherein the set maximum state of charge value is the state of charge value of the power cell required to take into account the vehicle average power demand and the power cell temperature to the set temperature startup value.
5. The fuel cell vehicle startup method of claim 1 wherein the set minimum state of charge value is a state of charge value of the power cell that is required when the power cell temperature reaches a set temperature startup value, regardless of the vehicle average driving power demand.
6. A fuel cell vehicle startup device comprising a processor for executing instructions to implement a method comprising:
detecting the current state of charge of the power battery, and judging whether the current state of charge of the power battery is larger than a set minimum state of charge value: if the current charge state value is larger than the set minimum charge state value, controlling the whole vehicle to carry out low-temperature cold start;
the low temperature cold start includes: the power cell heats the fuel cell, and after the fuel cell is started, the fuel cell generates electricity to supply a load.
7. The fuel cell vehicle starting apparatus according to claim 6, further comprising determining whether the current state of charge of the power cell is less than a set maximum state of charge value:
if the current charge state value is larger than the set maximum charge state value, controlling the whole vehicle to carry out low-temperature cold start while driving;
if the temperature of the power battery is lower than or equal to the set maximum charge state value, controlling the whole vehicle to carry out low-temperature cold start, and controlling the whole vehicle to drive after the temperature of the power battery is higher than the set temperature start value;
wherein the set maximum state of charge value is greater than the set minimum state of charge value.
8. The fuel cell vehicle starting apparatus according to claim 6, wherein if the current state of charge of the power cell is equal to or less than a set minimum state of charge value, the gun-in charge is controlled.
9. The fuel cell vehicle starting device of claim 7, wherein the set maximum state of charge value is a state of charge value of the power cell required to take into account the average vehicle power demand of the entire vehicle and the power cell temperature at the set temperature starting value.
10. The fuel cell vehicle starting device of claim 6, wherein the set minimum state of charge value is a state of charge value of the power cell that is required when the temperature of the power cell reaches a set temperature starting value, regardless of the average driving power requirement of the entire vehicle.
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| CN201810799184.0A CN110745033B (en) | 2018-07-19 | 2018-07-19 | Fuel cell vehicle starting method and device |
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| CN201810799184.0A CN110745033B (en) | 2018-07-19 | 2018-07-19 | Fuel cell vehicle starting method and device |
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| CN110745033A true CN110745033A (en) | 2020-02-04 |
| CN110745033B CN110745033B (en) | 2021-08-20 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111301228A (en) * | 2020-03-19 | 2020-06-19 | 北京亿华通科技股份有限公司 | Cold start control method for fuel cell vehicle |
| CN111319515A (en) * | 2020-03-25 | 2020-06-23 | 武汉格罗夫氢能汽车有限公司 | Control system and method for starting hydrogen energy automobile in low-temperature environment |
| CN111409502A (en) * | 2020-03-25 | 2020-07-14 | 武汉格罗夫氢能汽车有限公司 | Hydrogen fuel cell automobile and motor energy management method thereof in low-temperature environment |
| CN111806304A (en) * | 2020-06-23 | 2020-10-23 | 同济大学 | Vehicle fuel cell-lithium ion capacitor composite power supply system and control method |
| CN112224093A (en) * | 2020-09-16 | 2021-01-15 | 中国汽车技术研究中心有限公司 | Low-temperature starting control method for fuel cell automobile |
| CN113043907A (en) * | 2021-04-02 | 2021-06-29 | 中车青岛四方机车车辆股份有限公司 | Cold start method, system and vehicle |
| CN113471488A (en) * | 2021-06-24 | 2021-10-01 | 金龙联合汽车工业（苏州）有限公司 | Hybrid power system and battery low-temperature starting control method thereof |
| WO2021227991A1 (en) * | 2020-05-11 | 2021-11-18 | 长城汽车股份有限公司 | Charging method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111301228A (en) * | 2020-03-19 | 2020-06-19 | 北京亿华通科技股份有限公司 | Cold start control method for fuel cell vehicle |
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| CN111319515A (en) * | 2020-03-25 | 2020-06-23 | 武汉格罗夫氢能汽车有限公司 | Control system and method for starting hydrogen energy automobile in low-temperature environment |
| CN111409502A (en) * | 2020-03-25 | 2020-07-14 | 武汉格罗夫氢能汽车有限公司 | Hydrogen fuel cell automobile and motor energy management method thereof in low-temperature environment |
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| WO2021227991A1 (en) * | 2020-05-11 | 2021-11-18 | 长城汽车股份有限公司 | Charging method and apparatus |
| CN111806304A (en) * | 2020-06-23 | 2020-10-23 | 同济大学 | Vehicle fuel cell-lithium ion capacitor composite power supply system and control method |
| CN111806304B (en) * | 2020-06-23 | 2021-09-03 | 同济大学 | Vehicle fuel cell-lithium ion capacitor composite power supply system and control method |
| CN112224093A (en) * | 2020-09-16 | 2021-01-15 | 中国汽车技术研究中心有限公司 | Low-temperature starting control method for fuel cell automobile |
| CN113043907A (en) * | 2021-04-02 | 2021-06-29 | 中车青岛四方机车车辆股份有限公司 | Cold start method, system and vehicle |
| CN113471488A (en) * | 2021-06-24 | 2021-10-01 | 金龙联合汽车工业（苏州）有限公司 | Hybrid power system and battery low-temperature starting control method thereof |
| CN113471488B (en) * | 2021-06-24 | 2024-05-03 | 金龙联合汽车工业（苏州）有限公司 | Hybrid power system and battery low-temperature starting control method thereof |
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Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |
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