CN112193089A - Direct-current charging system and control method for fuel cell hydrogen energy automobile - Google Patents
Direct-current charging system and control method for fuel cell hydrogen energy automobile Download PDFInfo
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- CN112193089A CN112193089A CN202011131368.3A CN202011131368A CN112193089A CN 112193089 A CN112193089 A CN 112193089A CN 202011131368 A CN202011131368 A CN 202011131368A CN 112193089 A CN112193089 A CN 112193089A
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
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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
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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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
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of 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
- Y02T10/70—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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of 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 provides a direct current charging system and a control method for a fuel cell hydrogen energy automobile, wherein the system mainly comprises: a controller unit, a high-voltage charging port and a liquid crystal display screen; wherein the controller unit includes: the system comprises a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor control system and a whole vehicle controller; the method can well detect the vehicle state before and after charging and during charging, judge whether the vehicle state meets the chargeable state, charge the vehicle if the state meets the chargeable state, and quit charging if the state does not meet the chargeable state. The invention has the beneficial effects that: the invention simplifies complex functions, reduces the production cost, improves the realizability of the power supply system of the hydrogen energy automobile power battery of the hydrogen energy automobile, and has high stability and reliability.
Description
Technical Field
The invention relates to the field of fuel cell hydrogen energy automobiles, in particular to a direct current charging system and a control method of a fuel cell hydrogen energy automobile.
Background
With the vigorous popularization of hydrogen fuel cells, more and more fuel cell hydrogen energy automobiles are developed and rapidly popularized, and the design problems of the fuel cell hydrogen energy automobiles are more and more exposed. The problem that the hydrogen fuel cell automobile cannot be started due to the fact that the power battery is insufficient is particularly serious.
Disclosure of Invention
The invention provides a direct current charging control system and a direct current charging control method for a hydrogen energy automobile, aiming at the problem that the hydrogen fuel cell automobile cannot be started due to insufficient electric quantity of a power battery, and the direct current charging control system and the direct current charging control method are used for solving the difficulty that the hydrogen fuel cell automobile cannot be started due to the insufficient electric quantity of the power battery.
A direct current charging system of a fuel cell hydrogen energy automobile comprises: a controller unit, a high-voltage charging port and a liquid crystal display screen;
the controller unit includes: the system comprises a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor control system and a whole vehicle controller;
the power battery system comprises a power battery management control BMS, a power battery and a power battery contactor;
the motor control system comprises a rear motor controller, a motor, a speed reducer and a differential mechanism;
the whole vehicle controller is connected with the liquid crystal display screen, the high-voltage distribution box, the hydrogen fuel cell system, the power battery system, the rear motor controller and the high-voltage charging port through CAN communication buses;
the high-voltage distribution box is respectively connected with the hydrogen fuel cell system, the power battery system, the rear motor controller and the high-voltage charging port through high-voltage wire harnesses;
the power battery system is connected with the high-voltage charging port through a signal acquisition wiring harness;
and a charging contactor is arranged in the high-voltage distribution box.
The power battery management control BMS, the high-voltage distribution box, the motor controller and the vehicle control unit belong to a charging state detection module and are used for detecting connection and disconnection of a charging signal;
the power battery management control system BMS collects charging connection signals, packs SOC (electric quantity), current, voltage, temperature, fault state (fault/no fault), charging connection state (charging/discharging) and action information (actuation/disconnection) of the charging contactor of the power battery and sends the packed charging connection signals to the CAN communication bus;
the motor controller sends motor rotating speed information to the CAN communication bus;
the vehicle control unit sends out charging permission or non-charging permission instruction information to the power battery system according to motor rotating speed information, high-voltage distribution box fault state information, SOC (state of charge), current, voltage, temperature, fault state, charging connection state of the power battery and state information of the charging contactor, wherein the motor rotating speed information, the high-voltage distribution box fault state information, the SOC, the current, the voltage, the temperature, the fault state, the charging connection state and the state information of the charging contactor are;
the power battery system sends charging contact action instruction information to the high-voltage distribution box according to the charging or non-charging instruction information;
the high-voltage distribution box receives the action instruction information of the charging contactor, and controls the attraction state of the charging contactor according to the action instruction information so as to control the on-off of the charging high-voltage loop.
Furthermore, the hydrogen fuel cell system and the power cell system provide electric energy required by driving for the fuel cell hydrogen energy automobile, the high-voltage distribution box distributes the provided electric energy to the rear motor controller and the motor, the rear motor controller and the motor drive the motor by using the electric energy, kinetic energy generated by the motor is transmitted to the speed reducer and the differential mechanism through mechanical connection, and finally the speed reducer and the differential mechanism transmit the kinetic energy to the rear driving shaft, so that the kinetic energy is provided for the driving of the fuel cell hydrogen energy automobile.
A direct current charging control method of a fuel cell hydrogen energy automobile is suitable for the direct current charging system of the fuel cell hydrogen energy automobile, and comprises the following steps:
s1, the charging gun is inserted into the high-voltage charging port, the power battery system detects a charging connection signal, the charging connection signal is sent to the liquid crystal display screen and the whole vehicle controller through the CAN bus in a message form, a charging gun connection image is displayed on the liquid crystal display screen, and at the moment, the connection of the charging gun is prompted;
s2, after the vehicle control unit receives the charging connection signal, judging whether the charging condition is met; if yes, the vehicle control unit sends a command of allowing charging to the power battery system, and executes the step S3; otherwise, the vehicle control unit sends a command that charging is not allowed to the power battery system, and step S4 is executed;
s3, after the power battery system receives the command allowing charging, the power battery system sends a charging contact attracting command to the high-voltage power distribution box;
the high-voltage distribution box controls the charging contactor to attract after receiving the attracting command of the charging contactor, and sends the state of the charging contactor as the attracting state to the power battery management control system BMS, and the power battery management control system BMS performs charging information interaction with an external charging cabinet after receiving the state of the charging contactor as the attracting state, starts charging until the charging is finished, and then enters S5;
s4, after receiving a non-permission charging instruction sent by the vehicle controller, the power battery system makes the charging power be a preset power value (0) by interacting charging information with an external charging cabinet, and then detects whether the charging current is less than or equal to a preset current value (5A); if yes, the power battery system sends a charging permission power-off instruction, the vehicle control unit and the high-voltage distribution box execute related actions until the charging contactor is controlled to be disconnected, and the operation enters S5; otherwise, timing for 30S, and sending an emergency power-off instruction by the power battery system to forcibly power off high voltage;
and S5, finishing charging.
Further, in step S2, after receiving the charging connection information, the vehicle controller starts to determine whether the high voltage distribution box has a fault, whether the SOC value of the power battery is smaller than the SOC preset value (90), whether the power battery has a fault, and whether the absolute value of the motor rotation speed is smaller than the motor rotation speed preset value (3 rpm); meanwhile, the motor controller uploads motor rotating speed information, the high-voltage distribution box uploads fault information (fault/no fault), and the power battery uploads an SOC value and power battery fault information (fault/no fault); if the power battery and the high-voltage distribution box are not in fault and the conditions are met, the whole vehicle controller sends a charging permission instruction, otherwise, the whole vehicle controller sends a non-charging permission instruction.
Further, in step S4, the power battery system sends a command of allowing charging to be performed, and the vehicle control unit and the high-voltage distribution box execute related actions, specifically:
after the vehicle control unit receives a charging permission power-off instruction, a charging contact disconnection instruction is sent to the high-voltage distribution box, the high-voltage distribution box immediately disconnects the charging contact after receiving the charging contact disconnection instruction, and sends a state that the charging contact is disconnected to the power battery system, and the power battery system controls the power battery contactor to be disconnected after receiving the state that the charging contact is disconnected.
The technical scheme provided by the invention has the beneficial effects that:
(1) the system has perfect functions, all the control units coordinate and cooperate to jointly complete the function of the power supply system of the hydrogen energy automobile power battery, and the system has high stability and reliability.
(2) The vehicle state can be well detected before and after charging and during charging, whether the vehicle state meets the chargeable state or not is judged, if yes, the vehicle is charged, and if not, the vehicle is quitted from charging.
(3) All parts of the system are divided into work and cooperate to jointly complete the function of the hydrogen energy automobile power battery electricity supplementing system of the hydrogen energy automobile, so that the complex function is simplified, and the realizability of the hydrogen energy automobile power battery electricity supplementing system of the hydrogen energy automobile is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the DC charging system of a fuel cell hydrogen vehicle according to the present invention
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a direct current charging system of a fuel cell hydrogen vehicle according to the present invention.
The fuel cell hydrogen energy automobile direct current charging system is characterized in that: the method comprises the following steps: a controller unit, a high-voltage charging port and a liquid crystal display screen;
the controller unit includes: the system comprises a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor control system and a whole vehicle controller;
the power battery system comprises a power battery management control BMS, a power battery and a power battery contactor;
the motor control system comprises a rear motor controller, a motor, a speed reducer and a differential mechanism;
the whole vehicle controller is connected with the liquid crystal display screen, the high-voltage distribution box, the hydrogen fuel cell system, the power battery system, the rear motor controller and the high-voltage charging port through CAN communication buses;
the high-voltage distribution box is respectively connected with the hydrogen fuel cell system, the power battery system, the rear motor controller and the high-voltage charging port through high-voltage wire harnesses;
the power battery system is connected with the high-voltage charging port through a signal acquisition wiring harness;
and a charging contactor is arranged in the high-voltage distribution box.
The power battery management control BMS, the high-voltage distribution box, the motor controller and the vehicle control unit belong to a charging state detection module and are used for detecting connection and disconnection of a charging signal;
the power battery management control system BMS collects charging connection signals, packs SOC (electric quantity), current, voltage, temperature, fault state (fault/no fault), charging connection state (charging/discharging) and action information (actuation/disconnection) of the charging contactor of the power battery and sends the packed charging connection signals to the CAN communication bus;
the motor controller sends motor rotating speed information to the CAN communication bus;
the vehicle control unit sends out charging permission or non-charging permission instruction information to the power battery system according to motor rotating speed information, high-voltage distribution box fault state information, SOC (state of charge), current, voltage, temperature, fault state, charging connection state of the power battery and state information of the charging contactor, wherein the motor rotating speed information, the high-voltage distribution box fault state information, the SOC, the current, the voltage, the temperature, the fault state, the charging connection state and the state information of the charging contactor are;
the power battery system sends charging contact action instruction information to the high-voltage distribution box according to the charging or non-charging instruction information;
the high-voltage distribution box receives the action instruction information of the charging contactor, and controls the attraction state of the charging contactor according to the action instruction information so as to control the on-off of the charging high-voltage loop.
The hydrogen fuel cell system and the power cell system provide electric energy required by running for the fuel cell hydrogen energy automobile, the high-voltage distribution box distributes the provided electric energy to the rear motor controller and the motor, the rear motor controller and the motor drive the motor by using the electric energy, kinetic energy generated by the motor is transmitted to the speed reducer and the differential mechanism through mechanical connection, and finally the speed reducer and the differential mechanism transmit the kinetic energy to the rear driving shaft, so that the kinetic energy is provided for the running of the fuel cell hydrogen energy automobile.
A direct current charging control method of a fuel cell hydrogen energy automobile is suitable for the direct current charging control system of the fuel cell hydrogen energy automobile, and comprises the following steps:
s1, when the charging gun is inserted into the high-voltage charging port, the power battery system detects a charging connection signal, sends the information to the liquid crystal display screen through the CAN bus in a message form, and displays a charging gun connection image on the liquid crystal display screen, and at the moment, prompts that the charging gun is connected;
s2, after receiving the charging connection information, the vehicle control unit starts to judge the following conditions: (1) whether the high-voltage distribution box has faults or not; (2) whether the SOC of the power battery meets the SOC value smaller than 90; (3) whether the power battery has a fault; (4) whether the absolute value of the rotating speed of the motor is less than 3rpm or not; meanwhile, the motor controller uploads motor rotating speed information, the high-voltage distribution box uploads fault information, and the power battery system uploads SOC and power battery fault information; if the power battery and the high-voltage distribution box are both free of faults and the conditions (2) and (4) are both met, the whole vehicle controller sends a charging permission instruction, and step S3 is executed; otherwise, namely in the charging process or when the charging is finished, the SOC reaches 100, or the absolute value of the rotating speed of the motor is more than or equal to 3rpm, or the high-voltage distribution box has a fault, or the power battery system has a fault, when any one of the conditions is met, the whole vehicle controller sends a charging disallowing instruction, and the step S4 is executed;
s3, after the power battery system receives a charging permission instruction sent by the vehicle controller, the power battery system sends a charging contact attracting instruction, the vehicle controller receives information that the charging connection state is connected and the power battery contact is attracting, then sends the charging contact attracting instruction, the high-voltage distribution box receives the charging contact attracting instruction and then controls the charging contact to attract, and sends the charging contact to the power battery management control BMS, after the power battery management control BMS receives the charging contact state that the charging contact attracts, the power battery management control BMS performs charging information interaction with an external charging cabinet and starts charging until the charging is finished, and the vehicle controller enters S5;
s4, after receiving a non-permission charging instruction sent by the vehicle controller, the power battery system makes the charging power be a preset power value 0 through exchanging charging information with an external charging cabinet, then detects whether the charging current is less than or equal to a preset current value 5A, if so, the power battery system sends a charging permission power-off instruction, and the vehicle controller and the high-voltage distribution box execute related actions until the charging contact is controlled to be disconnected, and then the operation enters S5; otherwise, timing for 30S, and sending an emergency power-off instruction by the power battery system to forcibly power off high voltage;
and S5, finishing charging.
The invention has the beneficial effects that: all parts of the system are in work division and cooperation to jointly complete the charging function of the hydrogen energy automobile power battery charging system of the hydrogen energy automobile, so that the complex function is simplified, the realizability of the hydrogen energy automobile power battery charging system of the hydrogen energy automobile is improved, and meanwhile, the system has high stability and reliability; the vehicle state can be well detected before and after charging and during charging, whether the vehicle state meets the chargeable state or not is judged, if yes, the vehicle is charged, and if not, the vehicle is quitted from charging.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a fuel cell hydrogen can car direct current charging system which characterized in that: the method comprises the following steps: the controller unit, the high-voltage charging port and the liquid crystal display screen; the controller unit is electrically connected with the high-voltage charging port and the liquid crystal display screen respectively;
the controller unit includes: the system comprises a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor control system and a whole vehicle controller;
the whole vehicle controller is connected with the liquid crystal display screen, the high-voltage distribution box, the hydrogen fuel cell system, the power battery system and the high-voltage charging port through CAN communication buses;
the high-voltage distribution box is respectively connected with the hydrogen fuel cell system, the power battery system and the high-voltage charging port through high-voltage wire harnesses;
and the power battery system is connected with the high-voltage charging port through a signal acquisition wire harness.
2. The direct-current charging system of the fuel cell hydrogen energy automobile of claim 1, wherein the motor control system comprises a rear motor controller, a motor, a speed reducer and a differential;
the vehicle controller is connected with the rear motor controller through a CAN communication bus; the high-voltage distribution box is connected with the rear motor controller through a high-voltage wire harness.
3. The direct-current charging system for the hydrogen-powered automobile with the fuel cell as claimed in claim 2, wherein a charging contactor is arranged inside the high-voltage distribution box;
the differential is arranged in the speed reducer through a gear;
the rear motor controller is connected with the motor through a three-phase copper bar;
the motor, the speed reducer and the differential are connected to a rear driving shaft of the fuel cell through a gear shaft sleeve.
4. The direct-current charging system of the fuel cell hydrogen energy automobile according to claim 1, characterized in that;
the power battery system comprises a power battery management control system BMS, a power battery and a power battery contactor;
the power battery management control system BMS collects charging connection signals, packs the SOC, the current, the voltage, the temperature, the fault state and the charging connection state of the power battery and the state information of the charging contactor and sends the packing information to the CAN communication bus;
the motor controller sends motor rotating speed information to the CAN communication bus;
the vehicle control unit sends charging permission or non-charging permission instruction information to the power battery system according to motor rotating speed information, high-voltage distribution box fault state information, SOC (state of charge), current, voltage, temperature, fault state, charging connection state of the power battery and state information of the charging contactor, which are received from a CAN (controller area network) bus;
the power battery system sends charging contact action instruction information to the high-voltage distribution box according to the charging or non-charging instruction information;
the high-voltage distribution box receives the action instruction information of the charging contactor, and controls the attraction state of the charging contactor according to the action instruction information so as to control the on-off of the charging high-voltage loop.
5. The direct-current charging system for the fuel cell hydrogen energy automobile of claim 1, wherein the hydrogen fuel cell system and the power battery system provide electric energy required by the fuel cell hydrogen energy automobile for running, the high-voltage distribution box distributes the provided electric energy to the rear motor controller and the motor, the rear motor controller and the motor drive the motor by using the electric energy, kinetic energy generated by the motor is transmitted to the speed reducer and the differential through mechanical connection, and finally the speed reducer and the differential transmit the kinetic energy to the rear driving shaft, so that the kinetic energy is provided for the running of the fuel cell hydrogen energy automobile.
6. A direct current charging control method of a fuel cell hydrogen energy automobile, which is suitable for any one of the direct current charging systems of the fuel cell hydrogen energy automobile as claimed in claims 1-5, and is characterized by comprising the following steps:
s1, the charging gun is inserted into the high-voltage charging port, the power battery system detects a charging connection signal, the charging connection signal is sent to the liquid crystal display screen and the whole vehicle controller through the CAN bus in a message form, a charging gun connection image is displayed on the liquid crystal display screen, and at the moment, the connection of the charging gun is prompted;
s2, after the vehicle control unit receives the charging connection signal, judging whether the charging condition is met; if yes, the vehicle control unit sends a command of allowing charging to the power battery system, and executes the step S3; otherwise, the vehicle control unit sends a command that charging is not allowed to the power battery system, and step S4 is executed;
s3, after the power battery system receives the command allowing charging, the power battery system sends a charging contact attracting command to the high-voltage power distribution box;
the high-voltage distribution box controls the charging contactor to attract after receiving the attracting command of the charging contactor, and sends the state of the charging contactor as the attracting state to the power battery management control system BMS, and the power battery management control system BMS performs charging information interaction with an external charging cabinet after receiving the state of the charging contactor as the attracting state, starts charging until the charging is finished, and then enters S5;
s4, after receiving a non-permission charging instruction sent by the vehicle controller, the power battery system makes the charging power be a preset power value by interacting charging information with an external charging cabinet, and then detects whether the charging current is less than or equal to the preset current value; if yes, the power battery system sends a charging permission power-off instruction, the vehicle control unit and the high-voltage distribution box execute related actions until the charging contactor is controlled to be disconnected, and the operation enters S5; otherwise, timing for 30S, and sending an emergency power-off instruction by the power battery system to forcibly power off high voltage;
and S5, finishing charging.
7. The direct-current charging control method for the hydrogen-powered vehicle with the fuel cell as claimed in claim 6, wherein in step S2, after receiving the charging connection information, the vehicle controller starts to determine whether the high-voltage distribution box is faulty, whether the SOC of the power battery is less than the preset SOC, whether the power battery is faulty, and whether the absolute value of the motor speed is less than the preset motor speed; meanwhile, the motor controller uploads motor rotating speed information, the high-voltage distribution box uploads fault information, and the power battery uploads an SOC value and power battery fault information; if the power battery and the high-voltage distribution box are not in fault and the conditions are met, the whole vehicle controller sends a charging permission instruction, otherwise, the whole vehicle controller sends a non-charging permission instruction.
8. The direct-current charging control method for the fuel cell hydrogen-powered automobile according to claim 7, wherein the preset power value is 0, the preset current value is 5A, the preset SOC value is 90, and the preset motor speed value is 3 rpm.
9. The direct-current charging control method for the fuel cell hydrogen energy automobile according to claim 6, wherein in step S4, the power battery system sends a command for allowing charging and discharging, and the vehicle control unit and the high-voltage distribution box execute related actions, specifically:
the vehicle control unit sends a charging contactor disconnection instruction to the high-voltage distribution box after receiving a charging permission power-off instruction, the high-voltage distribution box immediately disconnects the charging contactor after receiving the charging contactor disconnection instruction, sends a state that the charging contactor is disconnected to the power battery system, and the power battery system controls the power battery contactor to be disconnected after receiving the state that the charging contactor is disconnected.
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| CN202011131368.3A CN112193089A (en) | 2020-10-21 | 2020-10-21 | Direct-current charging system and control method for fuel cell hydrogen energy automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959888A (en) * | 2021-03-12 | 2021-06-15 | 黄冈格罗夫氢能汽车有限公司 | Method and system for displaying charging state information of hydrogen energy heavy truck |
| CN113580942A (en) * | 2021-08-20 | 2021-11-02 | 河南牧原智能科技有限公司 | Device and method for controlling whole electric vehicle, electric vehicle and related products |
-
2020
- 2020-10-21 CN CN202011131368.3A patent/CN112193089A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959888A (en) * | 2021-03-12 | 2021-06-15 | 黄冈格罗夫氢能汽车有限公司 | Method and system for displaying charging state information of hydrogen energy heavy truck |
| CN113580942A (en) * | 2021-08-20 | 2021-11-02 | 河南牧原智能科技有限公司 | Device and method for controlling whole electric vehicle, electric vehicle and related products |
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