CN112677781B - Hybrid power supply system based on fuel cell and energy storage battery and automobile - Google Patents
Hybrid power supply system based on fuel cell and energy storage battery and automobile Download PDFInfo
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- CN112677781B CN112677781B CN202110022172.9A CN202110022172A CN112677781B CN 112677781 B CN112677781 B CN 112677781B CN 202110022172 A CN202110022172 A CN 202110022172A CN 112677781 B CN112677781 B CN 112677781B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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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
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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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 hybrid power supply system based on a fuel cell and an energy storage battery and a hybrid power automobile, which comprise the fuel cell system, the energy storage battery system and a control system which are connected with the power system, wherein the power system comprises a motor driver and a motor which are connected with each other, the motor driver is respectively connected with the control system, the fuel cell system and the energy storage battery system, the motor driver is respectively connected with the fuel cell system and the energy storage battery system through a driving relay, and when the automobile stops, the driving relay disconnects the energy storage battery system from the motor driver, so that a discharging loop of the energy storage battery system is cut off. Compared with the prior art, in the automobile stop state, the driving relay is adopted to cut off the discharge loop of the motor driver to reduce the electricity consumption, and meanwhile, when the electricity is charged to a third set threshold value which is more than 95%, all the discharge loops of the energy storage battery system are completely cut off through the bypass relay, so that the circuit of the fuel battery system is always in a full state.
Description
The invention discloses a control method and a vehicle system of a hybrid power vehicle with a fuel cell and an energy storage cell, which are applied for the application of the invention of the type of the invention, namely, the application of the invention of the date of 2016, 2 and 26, and the application of the invention of the type of the invention of the type of 201610108767.5.
Technical Field
The invention relates to the field of new energy automobiles, in particular to a hybrid power system based on a fuel cell and an energy storage battery and an automobile.
Background
The power system of the fuel cell vehicle is a main sign of the fuel cell vehicle, which is distinguished from other types of vehicles (internal combustion engine vehicles, battery electric vehicles, and oil-electric hybrid vehicles). The use of a fuel cell system as a power source is a hallmark feature of a fuel cell automotive power system. In general, the fuel cell is not the only power source of the system, and because the fuel cell is poor in performance aspects such as peak power output capability and dynamic response of power output, auxiliary power source devices are often needed to supplement and improve the fuel cell in terms of power output capability and the like, so as to form a fuel cell hybrid power system, and the auxiliary devices comprise a storage battery and a super capacitor.
For example, chinese patent CN 100581867C discloses an electric-electric hybrid fuel cell car power system, a driving system composed of a driving motor and a motor controller, a lithium ion battery connected to the driving system, a fuel cell engine comprising a fuel cell engine controller and a fuel cell stack, the fuel cell engine connected to the driving system via a DC/DC converter; the lithium ion storage battery, the fuel cell engine controller and the DC/DC converter are connected with the whole vehicle controller through an optical fiber CAN control line.
As another example, chinese patent No. CN 102555765B discloses a fuel cell-lithium ion battery hybrid power system, which includes a fuel cell subsystem, an energy storage cell subsystem, a charging control subsystem, an intelligent hybrid power management system, a motor and a motor control system; the power system takes a fuel cell as a main working power supply, and a lithium ion battery pack as an auxiliary power supply, and aims to solve the problems that the service life of the fuel cell of a pure fuel cell automobile is shortened, energy cannot be recovered, and the problems of long charging time, combustion explosion which can occur when continuous heavy current discharge occurs, attenuation and self-discharge of the pure lithium ion electric automobile.
However, the two power systems described above have the following drawbacks:
1. the fuel cell configuration power is higher, and the fuel cell system cost is higher;
2. the shutdown discharge rate of the energy storage battery system is high;
3. and stopping charging the fuel cell power supply system after the vehicle is stopped, so that the electric quantity of the energy storage battery is not full.
The closest prior art CN104044483a discloses an electric vehicle power supply without external charging, comprising: the energy storage battery is used for charging the power battery or directly driving the motor; the energy storage battery control unit is used for controlling the energy storage battery and regulating the start and stop and the output power of the energy storage battery by controlling the air, water and heat in the energy storage battery; the power battery is used for directly providing electric energy for the motor and maintaining the normal rotation power of the motor in the electric vehicle by receiving the electric energy provided by the energy storage battery; a power battery management unit for controlling discharge and charge of the power battery; a DC/DC conversion unit for converting a direct current voltage fluctuating in a fixed range into a voltage loadable to a power battery; and the power system control unit is used for adjusting the power generation of the energy storage battery and the charge and discharge of the power battery and providing electric energy for the motor. According to the invention, the fuel cell is used as an energy storage battery and an auxiliary power supply battery, so that the real-time charging of the electric vehicle can be realized, and an external charging interface is not required. However, this invention has significant drawbacks with the present invention, as described below.
Specifically, first, the power battery of the prior art CN104044483a is always connected to the line between the motor, and the power consumption of the probabilistic battery during charging cannot be reduced. The state of charge and consumption at the same time ensures that the maximum charge amount of the probability battery can only reach 90-95%. In order to solve the defect, the invention adopts the driving relay to cut off a discharging loop of the motor driver to reduce the electricity consumption in the automobile stopping state, and simultaneously charges to a third set threshold value with the electricity quantity being more than 95 percent.
Second, in the prior art CN104044483a, even after the power battery is fully charged, the discharging circuit between the power battery and the energy storage battery charged by the power battery is always connected, which makes the power battery continue to consume the power battery after stopping charging, and the power battery power is in a continuously reduced state. In order to solve the defect, when the charge quantity reaches a third set threshold value, namely after the battery is fully charged, the circuit between the fuel cell magnet and the energy storage battery system is completely cut off through the bypass relay, namely, all discharge loops of the energy storage battery system are completely cut off, so that the circuit of the fuel cell system is always in a full state.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a fuel cell and energy storage cell hybrid vehicle control method and a hybrid vehicle system which can always keep the energy storage cell in a full state and optimize the power configuration of the fuel cell.
The aim of the invention can be achieved by the following technical scheme:
a control method of a hybrid power vehicle with fuel cell and energy storage cell,
when the vehicle runs or temporarily stops without pulling out a key, controlling the fuel cell system to charge the energy storage battery system when the residual electric quantity of the energy storage battery system is reduced to a first set threshold value, and controlling the fuel cell system to stop charging the energy storage battery system and closing the fuel cell system when the residual electric quantity of the energy storage battery system reaches a second set threshold value;
when the vehicle stops for a long time and the key is pulled out, the fuel cell system is controlled to charge the energy storage battery system, and when the residual electric quantity of the energy storage battery system reaches a third set threshold value, the fuel cell system is closed, a discharging loop of the energy storage battery system is cut off, and under the existing technical condition, the energy storage battery is preferably a lithium battery.
The second set threshold value is consistent with the third set threshold value.
The energy storage battery is a lithium battery, and the second set threshold value is smaller than the third set threshold value.
When the fuel cell system charges the energy storage battery system, the output power of the fuel cell system is rated power.
A hybrid vehicle system implementing any one of the above fuel cell and energy storage cell hybrid vehicle control methods, comprising:
a power system;
the fuel cell system is connected with the power system;
the energy storage battery system is respectively connected with the fuel cell system and the power system;
and the control system is respectively connected with the fuel cell system and the energy storage battery system and is used for detecting the residual electric quantity of the energy storage battery system and controlling the fuel cell system and the energy storage battery system to work.
The power system comprises a motor driver and a motor which are connected with each other, and the motor driver is respectively connected with the control system, the fuel cell system and the energy storage battery system.
The hybrid vehicle system further comprises a driving relay, the motor driver is respectively connected with the fuel cell system and the energy storage battery system through the driving relay, and the driving relay disconnects the energy storage battery system from the motor driver at the stopping moment of the vehicle.
The fuel cell system comprises a fuel cell stack, a fuel system, a cooling system and an oxidant system, wherein the fuel system, the cooling system and the oxidant system are connected with the fuel cell stack, and the current output end of the fuel cell stack is connected with the power system and the energy storage cell system.
The fuel cell system further comprises an auxiliary power supply for converting the output voltage of the energy storage battery into the voltage required by the fuel cell system, one end of the auxiliary power supply is connected with the energy storage battery system, and the other end of the auxiliary power supply is connected with the control system.
The auxiliary power supply is connected with the energy storage battery system through a bypass relay, the bypass relay is arranged between the auxiliary power supply and the energy storage battery system, the bypass relay is disconnected before the vehicle is started, the bypass relay is closed by the fuel battery control system after the vehicle is started, the bypass relay is continuously conducted, when the vehicle is stopped for a long time and a key is pulled out, the fuel battery system charges the energy storage battery system until the residual electric quantity reaches a third set threshold value, and then the bypass relay is disconnected by the fuel battery control system, so that a discharging loop of the energy storage battery system is cut off.
Compared with the prior art, the invention has the following advantages:
1) The electric quantity of the energy storage battery is always above the first set threshold value, the electric quantity is full and in a good state, meanwhile, the power configuration of the fuel battery can be optimized because the fuel battery system is in efficient intermittent operation, so that efficient output is maintained, the working efficiency is improved, and the cost of the fuel battery is saved.
2) The second set threshold value is consistent with the third set threshold value, the program setting is simple, and the maintenance is convenient.
3) Since the second set threshold is smaller than the third set threshold and the trickle charge phenomenon occurs in the lithium battery, the second set threshold is appropriately lowered during running, and the fuel cell system is withdrawn earlier, so that a better effect can be obtained.
4) When the output power of the fuel cell system is rated power, the power configuration is better and the efficiency is higher.
5) The driving relay can cut off the discharging loop of the energy storage battery immediately when the vehicle stops, so that the consumption of the energy storage battery is reduced.
Drawings
FIG. 1 is a schematic diagram of a hybrid vehicle system of the present invention;
FIG. 2 is a schematic diagram of the working procedure in embodiment 1 of the present invention;
wherein: 1. a fuel cell system; 2. the system comprises an energy storage battery system 3, a motor driver 4, a motor 5, a control system 6, a driving relay 7, a starting switch 8, a bypass relay 11, a fuel cell stack 12, an oxidant system 13, a cooling system 14, a fuel system 15 and an auxiliary power supply.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Example 1:
a control method of a hybrid power vehicle with fuel cell and energy storage cell,
when the vehicle runs or temporarily stops without turning off the vehicle key, controlling the fuel cell system 1 to charge the energy storage battery system 2 when the residual electric quantity of the energy storage battery system 2 is reduced to a first set threshold value, and controlling the fuel cell system 1 to stop charging the energy storage battery system 2 when the residual electric quantity of the energy storage battery system 2 reaches a second set threshold value, and closing the fuel cell system 1;
it should be noted that some vehicle types may not have keys, and the vehicle running or temporary parking is not dependent on the keys specifically: when the vehicle is not driven into a parking gear or the vehicle is not closed, specific selection of which judgment criteria can be designed according to specific needs.
When the vehicle stops, the fuel cell system 1 is controlled to charge the energy storage battery system 2, and when the residual electric quantity of the energy storage battery system 2 reaches a third set threshold value, the fuel cell system 1 is closed, and a discharging loop of the energy storage battery system 2 is cut off.
The second set threshold is slightly smaller than the third set threshold, and a specific difference between the second set threshold and the third set threshold can be adjusted according to the charge-discharge characteristics of the energy storage battery, and the method does not belong to the category discussed in the application. Next, preferably, when the fuel cell system 1 charges the energy storage cell system 2, the output power of the fuel cell system 1 is rated.
A hybrid vehicle system for implementing the above-mentioned control method of a fuel cell and energy storage cell hybrid vehicle, as shown in fig. 1, includes:
a power system;
a fuel cell system 1 connected to a power system;
the energy storage battery system 2 is respectively connected with the fuel battery system 1 and the power system;
and the control system 5 is respectively connected with the fuel cell system 1 and the energy storage battery system 2, and is used for detecting the residual electric quantity of the energy storage battery system 2 and controlling the operation of the fuel cell system 1 and the energy storage battery system 2.
The power system comprises a motor driver 3 and a motor 4 which are connected with each other, the motor driver 3 is respectively connected with a control system 5, a fuel cell system 1 and an energy storage battery system 2, the hybrid vehicle system further comprises a driving relay 6, the motor driver 3 is respectively connected with the fuel cell system 1 and the energy storage battery system 2 through the driving relay 6, the driving relay 6 disconnects the energy storage battery system 2 from the motor driver 3 at the stopping moment of the vehicle, the driving relay 6 can instantly disconnect a discharging loop of the energy storage battery system 2 when the vehicle stops, the consumption of the electric quantity of the energy storage battery system is reduced, namely, the power consumption circuit of the energy storage battery system 2 is disconnected after the vehicle stops, and the standby discharging current of the energy storage battery is reduced. Furthermore, as shown in fig. 1, the hybrid vehicle system further includes a start switch 7, and the start switch 7 is connected to the control system for vehicle start.
The fuel cell system 1 includes a fuel cell stack 11, a fuel system 14 connected to the fuel cell stack 11, a cooling system 13, an oxidizer system 12, and a drain system (not shown), and a current output terminal of the fuel cell stack 11 is connected to the power system and the energy storage cell system 2.
The fuel cell system 1 further comprises an auxiliary power source 15 for converting the output voltage of the energy storage cell into the voltage required by the fuel cell system 1, one end of the auxiliary power source 15 is connected to the energy storage cell system 2, and the other end is connected to the fuel cell control system components (control chip, relay), in this embodiment, the fuel cell stack 11, the oxidizer system 12, the cooling system 13 and the auxiliary power source 15 are integrated in a hardware arrangement, and the fuel system is independent, thus facilitating the replacement of fuel.
A bypass relay 8 is arranged between the auxiliary power supply 15 and the energy storage battery system 2, the bypass relay 8 is opened before the vehicle is started, the bypass relay 8 is closed by the fuel cell control system 5 after the vehicle is started, the bypass relay 8 is continuously conducted, when the vehicle is stopped for a long time and a key is pulled out, until the fuel cell system 1 charges the energy storage battery system 2 to reach a third set threshold value of the residual electric quantity, and then the bypass relay 8 is opened by the fuel cell control system 5, so that a discharging loop of the energy storage battery system 2 is completely cut off.
The specific workflow of this embodiment is shown in figure 2,
when the vehicle starts, the starting switch is closed, and the control system 5 and the fuel cell system 1 stand by;
and starting a bypass relay 8, monitoring the output current and voltage of the energy storage battery system 2, sampling the charge and discharge current of the energy storage battery system 2, and further accumulating the electric quantity of the energy storage battery system 2.
The control system 5 monitors each status information and transmits display status information and fault indication.
The fuel cell system 1 performs high-efficiency constant-current operation according to the residual capacity of the energy storage battery system 2 and a designed control strategy (which can be the existing control strategy for achieving the most efficient operation of the fuel cell system), and charges the lithium current system 2.
When the vehicle is stopped, the fuel cell system 1 is shut down after the energy storage battery system 2 is charged according to a designed control strategy.
The first set threshold is selected to be 50%, the second set threshold is selected to be 95%, and the third set threshold is selected to be slightly greater than 95%.
At the time of vehicle stop, the start switch 7 is turned off, and thus the drive relay 6 is also turned off, but the bypass relay 8 is still in the on state, and the fuel cell system 1 and the control system 5 are not turned off until the charge management of the energy storage cell system 2 is completed by the fuel cell system 1 according to the control strategy. Through reasonable control strategy optimization, the goal of reducing the power configuration of the fuel cell system 1 is achieved, so that the total cost of the fuel cell system 1 and the whole vehicle cost are reduced. Meanwhile, the charge management of the energy storage battery system 2 is completed, and the capacity of the energy storage battery is still in a full state when the energy storage battery system is started next time.
For vehicles moving intermittently such as golf ground vehicles and sightseeing vehicles, the maximum power can be provided to accelerate or climb a slope at the same time mainly through a rated power limiting strategy of a fuel cell and a power supply strategy in cooperation with a storage battery, and the fuel cell can work at rated to output electric energy with the highest efficiency to charge the battery during downhill or intermittent parking. Otherwise the fuel cell cannot operate at an operating point of optimal efficiency or the fuel cell is started too frequently and a large power is required to be configured to meet the power required for acceleration or climbing.
Through experimental test data analysis of golf field vehicle examples, the motor instant power is usually very high up to 8kW when the vehicle starts accelerating or climbing, and the actual average output power is less than 2kW. The power of the fuel cell is generally configured to be 5kW, and the power configuration of the fuel cell can be reduced by adopting the control strategy of the patent, and only about 2kW is needed to be configured. Thereby reducing the cost and the weight of the whole vehicle, improving the utilization rate of fuel and improving the endurance mileage under the same capacity of fuel.
Example 2:
the same points as in embodiment 1 are not described again in this embodiment, and only the differences are described.
The present embodiment is significantly different from embodiment 1 in that the second set threshold value and the third set threshold value are identical in this embodiment, and maintenance can be simplified.
Claims (6)
1. A hybrid power supply system based on a fuel cell and an energy storage cell at least comprises a fuel cell system, an energy storage cell system and a control system which are connected with a power system, and is characterized in that,
the power system comprises a motor driver and a motor which are connected with each other, wherein the motor driver is respectively connected with the control system, the fuel cell system and the energy storage battery system, and the power system also comprises a starting switch (7), and the starting switch (7) is connected with the control system and is used for starting the vehicle;
the motor driver (3) is respectively connected with the fuel cell system (1) and the energy storage battery system (2) through a driving relay (6),
when the vehicle stops, the starting switch (7) is closed, the fuel cell system charges the energy storage battery system, and when the residual electric quantity of the energy storage battery system reaches a third set threshold value, the fuel cell system is closed, the driving relay (6) disconnects the energy storage battery system (2) from the motor driver (3), so that a discharging loop of the energy storage battery system (2) is cut off, a power consumption circuit of the energy storage battery system (2) is cut off after the vehicle stops, and standby discharging current of the energy storage battery is reduced;
the fuel cell system also comprises an auxiliary power supply for converting the output voltage of the energy storage battery into the voltage required by the fuel cell system, one end of the auxiliary power supply is connected with the energy storage battery system, the other end of the auxiliary power supply is connected with the control system,
a bypass relay (8) is arranged between the energy storage battery system (2) and the auxiliary power supply (15), the fuel battery system (1) is connected with the energy storage battery system (2) through the bypass relay (8),
when the vehicle stops, the driving relay (6) is turned off, the bypass relay (8) is continuously turned on until the residual electric quantity of the energy storage battery system reaches a third set threshold value, and the fuel battery control system (5) turns off the bypass relay (8), so that a discharge loop of the energy storage battery system (2) is completely cut off;
ensuring that the capacity of the energy storage battery is still in a full state when the energy storage battery is started next time, wherein the third set threshold value is slightly larger than the second set threshold value; or the third set threshold is slightly equal to the second set threshold, and the second set threshold is selected to be 95%.
2. The hybrid power supply system based on a fuel cell and an energy storage cell as claimed in claim 1, wherein,
before the vehicle starts, the bypass relay (8) is in an off state,
when the vehicle starts, a starting switch is closed, and the control system (5) and the fuel cell system (1) stand by;
after the vehicle is started, the bypass relay (8) is closed and continuously conducted by the fuel cell control system (5).
3. The hybrid power supply system based on a fuel cell and an energy storage cell according to claim 2, wherein,
when the residual electric quantity of the energy storage battery system is reduced to a first set threshold value during running or temporary stopping of the vehicle, the fuel cell control system charges the energy storage battery system,
stopping charging the energy storage battery system by the fuel battery control system when the residual electric quantity of the energy storage battery system reaches a second set threshold value, and closing the fuel battery system, wherein,
the first set threshold is selected to be 50%.
4. The hybrid power supply system based on a fuel cell and an energy storage battery according to any one of claims 1 to 3, characterized in that,
when the bypass relay (8) is conducted, the control system monitors the output current and the output voltage of the energy storage battery system (2), samples the charge and discharge current of the energy storage battery system (2), and further accumulates the electric quantity of the energy storage battery system (2).
5. A fuel cell system, characterized in that the fuel cell system comprises an auxiliary power supply for converting the output voltage of an energy storage cell into the voltage required by the fuel cell system, and further comprises a start switch (7), wherein the start switch (7) is connected with a control system for starting a vehicle;
one end of the auxiliary power supply is connected with the energy storage battery system, the other end of the auxiliary power supply is connected with the control system,
a bypass relay (8) is arranged between the energy storage battery system (2) and the auxiliary power supply (15),
when the vehicle stops, the fuel cell system (1) is controlled to charge the energy storage battery system (2), the starting switch (7) is turned off, the driving relay (6) is turned off, the bypass relay (8) is continuously turned on until the residual electric quantity of the energy storage battery system reaches a third set threshold value, and the fuel cell control system (5) turns off the bypass relay (8), so that a discharging loop of the energy storage battery system (2) is completely cut off;
after the vehicle is stopped, the power consumption circuit of the energy storage battery system (2) is cut off, and the standby discharge current of the energy storage battery is reduced; wherein the third set threshold is slightly greater than the second set threshold; or the third set threshold is slightly equal to the second set threshold, and the second set threshold is selected to be 95%;
the fuel cell system is connected with a power system,
the power system comprises a motor driver and a motor which are connected with each other, the motor driver is respectively connected with the control system, the fuel cell system and the energy storage battery system,
the motor driver (3) is respectively connected with the fuel cell system (1) and the energy storage battery system (2) through a driving relay (6),
when the vehicle is stopped, the drive relay (6) disconnects the energy storage battery system (2) from the motor driver (3), thereby disconnecting the discharge circuit of the energy storage battery system (2).
6. The hybrid electric vehicle based on the fuel cell and the energy storage battery at least comprises a fuel cell system, the energy storage battery system and a control system which are connected with a power system, and is characterized by further comprising a starting switch (7), wherein the starting switch (7) is connected with the control system and used for starting the vehicle;
the power system comprises a motor driver and a motor which are connected with each other, the motor driver is respectively connected with the control system, the fuel cell system and the energy storage battery system, the motor driver (3) is respectively connected with the fuel cell system (1) and the energy storage battery system (2) through a driving relay (6),
also comprises an auxiliary power supply (15) for converting the output voltage of the energy storage battery into the voltage required by the fuel cell system, a bypass relay (8) is arranged between the energy storage battery system (2) and the auxiliary power supply (15),
when the residual electric quantity of the energy storage battery system is reduced to a first set threshold value during running or temporary stopping of the vehicle, the fuel cell control system charges the energy storage battery system,
stopping the fuel cell control system from charging the energy storage battery system when the residual electric quantity of the energy storage battery system reaches a second set threshold value, and closing the fuel cell system, wherein
When the vehicle stops, the fuel cell system (1) is controlled to charge the energy storage battery system (2), and the driving relay (6) disconnects the energy storage battery system (2) from the motor driver (3), so that a discharging loop of the energy storage battery system (2) is cut off; the bypass relay (8) is continuously conducted until the residual electric quantity of the energy storage battery system reaches a third set threshold value, the fuel battery control system (5) cuts off the bypass relay (8), so that a discharging loop of the energy storage battery system (2) is completely cut off, a power consumption circuit of the energy storage battery system (2) is cut off after the vehicle stops, and standby discharging current of the energy storage battery is reduced; ensuring that the capacity of the energy storage battery is still in a full state when the energy storage battery is started next time;
the first set threshold is selected to be 50%, and the second set threshold is selected to be 95%;
the third set threshold is slightly larger than the second set threshold; or alternatively
The third set threshold is slightly equal to the second set threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022172.9A CN112677781B (en) | 2016-02-26 | 2016-02-26 | Hybrid power supply system based on fuel cell and energy storage battery and automobile |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022172.9A CN112677781B (en) | 2016-02-26 | 2016-02-26 | Hybrid power supply system based on fuel cell and energy storage battery and automobile |
| CN201610108767.5A CN107128184B (en) | 2016-02-26 | 2016-02-26 | Control method of fuel cell and energy storage cell hybrid electric vehicle and vehicle system |
Related Parent Applications (1)
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| CN109693578B (en) * | 2019-02-01 | 2021-08-06 | 中国第一汽车股份有限公司 | Fuel cell vehicle whole vehicle power distribution control method and system |
| CN110194065B (en) * | 2019-05-29 | 2021-01-29 | 中国第一汽车股份有限公司 | Vehicle energy control method and device, vehicle and storage medium |
| CN110422084B (en) * | 2019-06-27 | 2021-09-14 | 陕西法士特齿轮有限责任公司 | Fuel cell power control method |
| CN110341504B (en) * | 2019-07-04 | 2024-01-26 | 山西成功汽车制造有限公司 | Range-extending electric vehicle power system and control method thereof |
| CN111180761A (en) * | 2019-12-30 | 2020-05-19 | 浙江嘉杰汽车设计有限公司 | Method for releasing residual energy when vehicle-mounted fuel cell is shut down |
| CN111370738B (en) * | 2020-03-16 | 2021-11-30 | 中国兵器装备集团自动化研究所有限公司 | Self-adaptive load control system and method for fuel cell power generation system |
| CN113733938B (en) * | 2021-09-17 | 2023-08-04 | 中车青岛四方机车车辆股份有限公司 | Power battery charging method, charging system, hybrid power system and train |
| CN113682159B (en) * | 2021-09-26 | 2023-06-06 | 天津内燃机研究所（天津摩托车技术中心） | New energy vehicle energy-saving power system and control method thereof |
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| CN107128184B (en) | 2020-12-25 |
| CN112677781A (en) | 2021-04-20 |
| CN107128184A (en) | 2017-09-05 |
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