CN112356676A - Multi-pre-charging PDU system of hydrogen energy automobile and pre-charging method thereof - Google Patents
Multi-pre-charging PDU system of hydrogen energy automobile and pre-charging method thereof Download PDFInfo
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- CN112356676A CN112356676A CN202011361380.3A CN202011361380A CN112356676A CN 112356676 A CN112356676 A CN 112356676A CN 202011361380 A CN202011361380 A CN 202011361380A CN 112356676 A CN112356676 A CN 112356676A
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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
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by 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
- 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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- Sustainable Energy (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a hydrogen energy automobile multi-pre-charging PDU system, which comprises: the power supply module comprises a power supply contactor and a power battery, wherein the power supply contactor is connected with a power supply, and the power battery is connected with the power supply contactor; the system comprises a pre-charging module, a power supply module and a power supply module, wherein the pre-charging module comprises an auxiliary high-voltage system pre-charging module, a hydrogen fuel cell high-voltage system pre-charging module and a chassis driving high-voltage system pre-charging module; and the pre-charging system comprises an auxiliary high-voltage system, a hydrogen fuel cell high-voltage system and a chassis driving high-voltage system. The invention discloses a pre-charging method of a hydrogen energy automobile multi-pre-charging PDU system, which comprises the following steps: pre-charging an auxiliary high-pressure system; pre-charging a high-voltage system of the hydrogen fuel cell; and the chassis drives a high-voltage system for pre-charging. The invention can shorten the pre-charging time, reduce the pre-charging waiting time, optimize the structure of the high-voltage distribution system and reduce the failure rate.
Description
Technical Field
The invention relates to the technical field of new energy automobiles. More particularly, the invention relates to a hydrogen energy source automobile multi-pre-charging PDU system and a pre-charging method thereof.
Background
With the popularization of hydrogen fuel new energy automobiles, more and more automobile enterprises begin to pay attention to the research and development of hydrogen fuel cell new energy automobiles. As a plurality of high-voltage devices are added in the hydrogen fuel cell automobile compared with the traditional new energy automobile, the high-voltage load in the circuit is more, and the pre-charging time is greatly prolonged according to the design of the traditional pre-charging circuit.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
Still another object of the present invention is to provide a multi-precharge PDU system for a hydrogen energy vehicle and a precharge method thereof, which can shorten the precharge time, reduce the precharge waiting time, and simultaneously optimize the structure of a high voltage distribution system, and reduce the failure rate.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a hydrogen energy source vehicle multi-precharge PDU system, comprising:
the power supply module comprises a power supply contactor and a power battery, wherein the power supply contactor is connected with a power supply, and the power battery is connected with the power supply contactor;
the pre-charging module comprises an auxiliary high-voltage system pre-charging module, a hydrogen fuel cell high-voltage system pre-charging module and a chassis driving high-voltage system pre-charging module, and the auxiliary high-voltage system pre-charging module, the hydrogen fuel cell high-voltage system pre-charging module and the chassis driving high-voltage system pre-charging module are respectively connected with the power module;
the pre-charging system comprises an auxiliary high-voltage system, a hydrogen fuel cell high-voltage system and a chassis driving high-voltage system, wherein the auxiliary high-voltage system, the hydrogen fuel cell high-voltage system and the chassis driving high-voltage system are respectively connected and pre-charged by an auxiliary high-voltage system pre-charging module, a hydrogen fuel cell high-voltage system pre-charging module and a chassis driving high-voltage system pre-charging module.
Preferably, the auxiliary high-voltage system pre-charging module comprises an auxiliary high-voltage system pre-charging contactor, an auxiliary high-voltage system pre-charging resistor, an auxiliary high-voltage system fuse and an auxiliary high-voltage system main contactor, wherein the auxiliary high-voltage system pre-charging contactor, the auxiliary high-voltage system pre-charging resistor and the auxiliary high-voltage system main contactor are sequentially and electrically connected;
the hydrogen fuel cell high-voltage system pre-charging module comprises a hydrogen fuel cell high-voltage system pre-charging contactor, a hydrogen fuel cell high-voltage system pre-charging resistor, a hydrogen fuel cell high-voltage system fuse and a hydrogen fuel cell high-voltage system main contactor, wherein the hydrogen fuel cell high-voltage system pre-charging contactor, the hydrogen fuel cell high-voltage system pre-charging resistor, the hydrogen fuel cell high-voltage system fuse and the hydrogen fuel cell high-voltage system main contactor are sequentially and electrically connected;
the chassis driving high-voltage system pre-charging module comprises a chassis driving high-voltage system pre-charging contactor, a chassis driving high-voltage system pre-charging resistor, a chassis driving high-voltage system fuse and a chassis driving high-voltage system main contactor, wherein the chassis driving high-voltage system pre-charging contactor, the chassis driving high-voltage system pre-charging resistor and the chassis driving high-voltage system main contactor are sequentially and electrically connected.
The invention also provides a pre-charging method of the hydrogen energy automobile multi-pre-charging PDU system, which comprises the following steps: pre-charging an auxiliary high-pressure system;
pre-charging a high-voltage system of the hydrogen fuel cell;
and the chassis drives a high-voltage system for pre-charging.
Preferably, the auxiliary high-pressure system pre-charging is completed by the auxiliary high-pressure system pre-charging module;
the pre-charging of the high-voltage system of the hydrogen fuel cell is completed by a pre-charging module of the high-voltage system of the hydrogen fuel cell;
the pre-charging of the chassis driving high-voltage system is completed by the pre-charging module of the chassis driving high-voltage system.
Preferably, the auxiliary high-pressure system pre-charging process specifically includes:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the auxiliary high-voltage system or not is judged, if not, the multi-precharge PDU system waits until the precharge command of the auxiliary high-voltage system is received;
after receiving the auxiliary high-voltage system pre-charging command, the multi-pre-charging PDU system controls a pre-charging contactor of the auxiliary high-voltage system to be closed;
the multi-precharge PDU system judges that the absolute value of the power module bus voltage and the auxiliary high-voltage system precharge module bus voltage is less than 10V, if the condition is not met for 3s, the multi-precharge PDU system controls the auxiliary high-voltage system precharge contactor to be disconnected and sends an auxiliary high-voltage system precharge failure signal, and if the condition is met within 3s, the multi-precharge PDU system controls the auxiliary high-voltage system main contactor to be closed;
timing 100ms after the main contactor of the auxiliary high-voltage system is closed;
and after the timing meets 100ms, the multi-precharge PDU system controls the auxiliary high-voltage system precharge contactor to be disconnected and sends an auxiliary high-voltage system precharge completion signal.
Preferably, the hydrogen fuel cell high-voltage system flow specifically includes:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the high-voltage system of the hydrogen fuel cell, if not, waiting until the precharge command of the high-voltage system of the hydrogen fuel cell is received;
after receiving a pre-charging command of a high-voltage system of the hydrogen fuel cell, controlling a pre-charging contactor of the high-voltage system of the hydrogen fuel cell to pull in by a multi-pre-charging PDU system;
the multi-precharge PDU system judges that the absolute value of the power module bus voltage-hydrogen fuel cell high-voltage system precharge module bus voltage is less than 10V, if the condition is not met for 3S continuously, the multi-precharge PDU system controls the precharge contactor of the hydrogen fuel cell high-voltage system to be disconnected and sends a hydrogen fuel cell high-voltage system precharge failure signal, and if the condition is met within 3S, the multi-precharge PDU system controls the pre-main contactor of the hydrogen fuel cell high-voltage system to be closed;
timing 100ms after the main contactor of the hydrogen fuel cell high-voltage system is closed;
and after the timing meets 100ms, the multi-precharge PDU system controls the precharge contactor of the hydrogen fuel cell high-voltage system to be disconnected and sends a precharge completion signal of the hydrogen fuel cell high-voltage system.
Preferably, the chassis driving high-pressure system pre-charging process specifically comprises:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a chassis driving high-voltage system precharge command or not is judged, and if not, the multi-precharge PDU system waits until the chassis driving high-voltage system precharge command is received;
after a pre-charging command of the chassis driving high-voltage system is received, the multi-pre-charging PDU system controls the chassis to drive a pre-charging contactor of the high-voltage system to be closed;
the multi-precharge PDU system judges that the absolute value of the power module bus voltage-chassis driving high-voltage system bus voltage is less than 10V, if the condition is not met for 3s continuously, the multi-precharge PDU system controls the chassis to drive the precharge contactor of the high-voltage system to be disconnected, the multi-precharge PDU system sends a chassis driving high-voltage system precharge failure signal, and if the condition is met within 3s, the multi-precharge PDU system controls the chassis to drive the main contactor of the high-voltage system to be closed;
timing for 100ms after the chassis drives the main contactor of the high-voltage system to suck;
and after the timing meets 100ms, the multi-precharge PDU system controls the chassis to drive the precharge contactor of the high-voltage system to be disconnected and sends a signal for completing the precharge of the chassis driving high-voltage system.
The invention at least comprises the following beneficial effects:
the PDU system can shorten the pre-charging time, reduce the pre-charging waiting time, optimize the structure of a high-voltage power distribution system and reduce the failure rate;
a plurality of pre-charging loops are designed, pre-charging of the loops is not affected, independence of high-voltage systems is increased, maintenance is convenient, and unnecessary energy loss can be reduced;
a plurality of pre-charging resistors are designed, so that the service life of the pre-charging resistors is prolonged, and the failure rate of the pre-charging resistors is reduced;
designing a plurality of pre-charging loops, placing high-voltage systems with consistent working characteristics of power devices under the same high-voltage loop, reducing the influence of other high-voltage systems on the high-voltage systems, and optimizing the structure of a high-voltage power distribution system;
a plurality of working loops are designed, so that the current divided by each loop is far smaller than the total current of one total loop, and the loss of a copper bar is reduced;
a plurality of independent pre-charging loops are designed, so that the time required by pre-charging is greatly shortened, and the pull-in waiting time of the contactor is reduced, thereby reducing the high-voltage waiting time on a driver.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a block diagram of a multi-precharge PDU system according to one embodiment of the present invention;
FIG. 2 is a schematic flow chart of the auxiliary high pressure system precharge according to one embodiment of the present invention;
fig. 3 is a schematic flow chart of the hydrogen fuel cell high-voltage system precharge according to one embodiment of the present invention;
fig. 4 is a schematic flow chart of the pre-charging process of the chassis driving high-voltage system according to one embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
As shown in fig. 1, the present invention provides a multi-precharge PDU system of a hydrogen energy vehicle, comprising:
the power supply module 100 comprises a power supply contactor 110 and a power battery 120, wherein the power supply contactor 110 is connected with a power supply, and the power battery 120 is connected with the power supply contactor 110;
it should be noted that the power battery 120 provides energy for the pre-charging system and the pre-charging module; the power contactor 110 ensures high-voltage safety and reduces the risk of electric shock of personnel in order to prevent the direct connection of a power battery and the outside.
The pre-charging module 200 comprises an auxiliary high-voltage system pre-charging module, a hydrogen fuel cell high-voltage system pre-charging module and a chassis driving high-voltage system pre-charging module, and the auxiliary high-voltage system pre-charging module, the hydrogen fuel cell high-voltage system pre-charging module and the chassis driving high-voltage system pre-charging module are respectively connected with the power module 100;
the pre-charging system 800 comprises an auxiliary high-voltage system 700, a hydrogen fuel cell high-voltage system 600 and a chassis driving high-voltage system 500, wherein the auxiliary high-voltage system 700, the hydrogen fuel cell high-voltage system 600 and the chassis driving high-voltage system 500 are pre-charged by the auxiliary high-voltage system pre-charging module, the hydrogen fuel cell high-voltage system pre-charging module and the chassis driving high-voltage system pre-charging module respectively.
The auxiliary high-voltage system comprises an automobile voltage reduction DC, an air conditioner compressor and an air conditioner PTC heater; the hydrogen fuel cell high-voltage system is a system comprising a fuel cell high-voltage system and a super capacitor high-voltage system; the chassis driving high-voltage system is a high-voltage driving system.
Referring to fig. 1, the auxiliary high-voltage system precharging module includes an auxiliary high-voltage system precharging contactor 210, an auxiliary high-voltage system precharging resistor 220, an auxiliary high-voltage system fuse 240, and an auxiliary high-voltage system main contactor 230 connected to two ends of the auxiliary high-voltage system precharging contactor 210 and the auxiliary high-voltage system precharging resistor 220, which are electrically connected in sequence;
the hydrogen fuel cell high-voltage system pre-charging module comprises a hydrogen fuel cell high-voltage system pre-charging contactor 310, a hydrogen fuel cell high-voltage system pre-charging resistor 320, a hydrogen fuel cell high-voltage system fuse 340 and a hydrogen fuel cell high-voltage system main contactor 330, wherein the hydrogen fuel cell high-voltage system pre-charging contactor 310, the hydrogen fuel cell high-voltage system pre-charging resistor 320, the hydrogen fuel cell high-voltage system main contactor and the hydrogen fuel cell high-voltage system main contactor are sequentially and electrically connected;
the chassis driving high-voltage system pre-charging module comprises a chassis driving high-voltage system pre-charging contactor 410, a chassis driving high-voltage system pre-charging resistor 420, a chassis driving high-voltage system fuse 440 and a chassis driving high-voltage system main contactor 430 which are sequentially and electrically connected and arranged, wherein the chassis driving high-voltage system pre-charging contactor 430 is connected to two ends of the chassis driving high-voltage system pre-charging contactor 410 and the chassis driving high-voltage system pre-charging resistor 420.
It should be noted that the auxiliary high-voltage system precharge contactor 210 is closed when the auxiliary high-voltage system 700 is precharged, so that the precharge circuit of the auxiliary high-voltage system 700 is turned on, and the auxiliary high-voltage system precharge resistor 220 limits the magnitude of the precharge current when the auxiliary high-voltage system 700 is precharged, so as to prevent the loop current from being too large, and simultaneously determines the precharge time together with the capacitor in the auxiliary high-voltage system 700; the auxiliary high voltage system fuse 240 ensures that the working current of the auxiliary high voltage system 700 is not too large, which causes a wire burning situation; the auxiliary high voltage system main contactor 230 is actively closed after the pre-charging of the auxiliary high voltage system 700 is completed, so as to short-circuit the pre-charging circuit, and at this time, the auxiliary high voltage system can work at high voltage.
It should be further noted that the hydrogen fuel cell high-voltage system precharge contactor 310 is closed when the hydrogen fuel cell high-voltage system 600 is precharged, so that the precharge circuit of the hydrogen fuel cell high-voltage system 600 is conducted, and the hydrogen fuel cell high-voltage system precharge resistor 320 limits the magnitude of the precharge current when the hydrogen fuel cell high-voltage system 600 is precharged, so as to prevent the loop current from being too large, and simultaneously determines the precharge time together with the capacitor in the hydrogen fuel cell high-voltage system 600; the hydrogen fuel cell high-voltage system fuse 340 ensures that the working current of the hydrogen fuel cell high-voltage system 600 is not too large, which causes the occurrence of wire burning; the main contactor 330 of the hydrogen fuel cell high-voltage system is actively closed after the pre-charging of the hydrogen fuel cell high-voltage system 600 is completed, so as to short out the pre-charging loop, and at this time, the hydrogen fuel cell high-voltage system can work at high voltage.
It should be further noted that the chassis driving high-voltage system precharge contactor 410 is closed when the chassis driving high-voltage system 500 is precharged, so that the chassis driving high-voltage system 500 precharge circuit is turned on, the chassis driving high-voltage system precharge resistor 420 limits the magnitude of the precharge current when the chassis driving high-voltage system 500 is precharged, so as to prevent the circuit current from being too large, and simultaneously, the precharge current and the capacitor in the chassis driving high-voltage system 500 determine the precharge time together; the chassis driving high-voltage system fuse 440 ensures that the working current of the chassis driving high-voltage system 500 is not too large, which causes the occurrence of wire burning; the chassis driving high-voltage system main contactor 430 is actively closed after the chassis driving high-voltage system 500 is precharged, so that the precharge circuit is short-circuited, and the chassis driving high-voltage system can work at a high voltage.
The invention also provides a pre-charging method of the hydrogen energy automobile multi-pre-charging PDU system, which comprises the following steps:
referring to fig. 2, including mode one, the auxiliary high pressure system 700 is precharged; the auxiliary high-pressure system 700 pre-charging is accomplished by the auxiliary high-pressure system pre-charging module; the pre-charging process of the auxiliary high-pressure system 700 specifically includes:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the auxiliary high-voltage system 700, if not, waiting until the precharge command of the auxiliary high-voltage system 700 is received;
after receiving the pre-charging command of the auxiliary high-voltage system (700), the multi-pre-charging PDU system controls the pre-charging contactor 210 of the auxiliary high-voltage system to be closed;
the multi-precharge PDU system judges that the absolute value of the bus voltage of the power module 100 and the absolute value of the bus voltage of the auxiliary high-voltage system precharge module are less than 10V, if the condition is not met for 3s continuously, the multi-precharge PDU system controls the auxiliary high-voltage system precharge contactor 210 to be disconnected and sends a precharge failure signal of the auxiliary high-voltage system 700, and if the condition is met within 3s, the multi-precharge PDU system controls the auxiliary high-voltage system main contactor 230 to be closed;
timing 100ms after the auxiliary high-voltage system main contactor 230 is closed;
after the timing is 100ms, the multi-precharge PDU system controls the auxiliary high-voltage system precharge contactor 210 to be turned off and the multi-precharge PDU system transmits a precharge complete signal of the auxiliary high-voltage system 700.
Referring to fig. 3, including mode two, a hydrogen fuel cell high voltage system 600 pre-charge; the hydrogen fuel cell high-voltage system 600 pre-charging is accomplished by the hydrogen fuel cell high-voltage system pre-charging module; the flow of the hydrogen fuel cell high-voltage system 600 is specifically as follows:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the hydrogen fuel cell high-voltage system 600 or not is judged, and if not, the multi-precharge PDU system waits until the precharge command of the hydrogen fuel cell high-voltage system 600 is received;
after receiving a pre-charging command of the hydrogen fuel cell high-voltage system 600, the multi-pre-charging PDU system controls the pre-charging contactor 310 of the hydrogen fuel cell high-voltage system to pull in;
the multi-precharge PDU system judges that the absolute value of the bus voltage of the power module 100-the bus voltage of the precharge module of the hydrogen fuel cell high-voltage system is less than 10V, if the condition is not met for 3S continuously, the multi-precharge PDU system controls the precharge contactor 310 of the hydrogen fuel cell high-voltage system to be disconnected and sends a precharge failure signal of the hydrogen fuel cell high-voltage system 600, and if the condition is met within 3S, the multi-precharge PDU system controls the pre-main contactor 330 of the hydrogen fuel cell high-voltage system to be attracted;
timing 100ms after the main contactor 330 of the hydrogen fuel cell high-voltage system is closed;
after the timing meets 100ms, the multi-precharge PDU system controls the hydrogen fuel cell high-voltage system precharge contactor 310 to be disconnected and sends a hydrogen fuel cell high-voltage system 600 precharge completion signal.
Referring to fig. 4, including mode three, the chassis drive high pressure system 500 is pre-charged; the pre-charging of the chassis driving high-voltage system 500 is completed by a pre-charging module of the chassis driving high-voltage system; the pre-charging process of the chassis driving high-voltage system 500 specifically comprises the following steps:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the chassis driving high-voltage system 500 or not, if not, waiting until the precharge command of the chassis driving high-voltage system 500 is received;
after receiving a pre-charging command of the chassis driving high-voltage system 500, the multi-pre-charging PDU system controls the chassis driving high-voltage system pre-charging contactor 410 to be closed;
the multi-precharge PDU system judges that the absolute value of the bus voltage of the power module 100-the bus voltage of the chassis driving high-voltage system is less than 10V, if the condition is not met for 3s continuously, the multi-precharge PDU system controls the chassis to drive the precharge contactor 410 of the high-voltage system to be disconnected and sends a precharge failure signal of the chassis driving high-voltage system 500, and if the condition is met within 3s, the multi-precharge PDU system controls the chassis to drive the main contactor 430 of the high-voltage system to be attracted;
timing for 100ms after the chassis drives the main contactor 430 of the high-voltage system 500 to suck;
after the timing is 100ms, the multi-precharge PDU system controls the chassis to drive the high-voltage system precharge contactor 410 to be turned off and sends a signal that the chassis drives the high-voltage system 500 to complete the precharge.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (7)
1. A hydrogen energy source automobile multi-pre-charging PDU system is characterized by comprising:
the power supply module (100) comprises a power supply contactor (110) and a power battery (120), wherein the power supply contactor (110) is connected with a power supply, and the power battery (120) is connected with the power supply contactor (110);
the pre-charging module (200) comprises an auxiliary high-voltage system pre-charging module, a hydrogen fuel cell high-voltage system pre-charging module and a chassis driving high-voltage system pre-charging module, and the auxiliary high-voltage system pre-charging module, the hydrogen fuel cell high-voltage system pre-charging module and the chassis driving high-voltage system pre-charging module are respectively connected with the power module (100);
the pre-charging system (800) comprises an auxiliary high-voltage system (700), a hydrogen fuel cell high-voltage system (600) and a chassis driving high-voltage system (500), wherein the auxiliary high-voltage system (700), the hydrogen fuel cell high-voltage system (600) and the chassis driving high-voltage system (500) are respectively connected and pre-charged by the auxiliary high-voltage system pre-charging module, the hydrogen fuel cell high-voltage system pre-charging module and the chassis driving high-voltage system pre-charging module.
2. The multi-precharge PDU system of a hydrogen energy vehicle of claim 1, wherein the auxiliary high-voltage system precharge module comprises an auxiliary high-voltage system precharge contactor (210), an auxiliary high-voltage system precharge resistor (220), an auxiliary high-voltage system fuse (240), and an auxiliary high-voltage system main contactor (230) connected to both ends of the auxiliary high-voltage system precharge contactor (210) and the auxiliary high-voltage system precharge resistor (220), which are electrically connected in sequence;
the hydrogen fuel cell high-voltage system pre-charging module comprises a hydrogen fuel cell high-voltage system pre-charging contactor (310), a hydrogen fuel cell high-voltage system pre-charging resistor (320), a hydrogen fuel cell high-voltage system fuse (340) and a hydrogen fuel cell high-voltage system main contactor (330), wherein the hydrogen fuel cell high-voltage system pre-charging contactor (310), the hydrogen fuel cell high-voltage system pre-charging resistor (320) and the hydrogen fuel cell high-voltage system main contactor are sequentially and electrically connected;
the chassis driving high-voltage system pre-charging module comprises a chassis driving high-voltage system pre-charging contactor (410), a chassis driving high-voltage system pre-charging resistor (420), a chassis driving high-voltage system fuse (440) and a chassis driving high-voltage system main contactor (430) which are sequentially and electrically connected and arranged, and the chassis driving high-voltage system main contactor (430) is connected to the two ends of the chassis driving high-voltage system pre-charging contactor (410) and the two ends of the chassis driving high-voltage system pre-.
3. A precharge method of a hydrogen-powered vehicle multi-precharge PDU system as claimed in claim 1 or 2, comprising: auxiliary high pressure system (700) pre-charge;
pre-charging a hydrogen fuel cell high-voltage system (600);
the chassis drive high pressure system (500) is pre-charged.
4. The pre-charging method of the multi-pre-charging PDU system of the hydrogen-powered vehicle as claimed in claim 3, wherein the pre-charging of the auxiliary high-voltage system (700) is performed by the auxiliary high-voltage system pre-charging module;
hydrogen fuel cell high voltage system (600) pre-charging is accomplished by the hydrogen fuel cell high voltage system pre-charging module;
the pre-charging of the chassis driving high-voltage system (500) is completed by the pre-charging module of the chassis driving high-voltage system.
5. The pre-charging method of the multi-pre-charging PDU system of the hydrogen energy vehicle as claimed in claim 4, wherein the pre-charging process of the auxiliary high-pressure system (700) is specifically as follows:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the auxiliary high-voltage system (700) or not, if not, waiting until the precharge command of the auxiliary high-voltage system (700) is received;
after receiving the pre-charging command of the auxiliary high-voltage system (700), the multi-pre-charging PDU system controls a pre-charging contactor (210) of the auxiliary high-voltage system to be closed;
the multi-precharge PDU system judges that the absolute value of the bus voltage of the power module (100) -the bus voltage of the auxiliary high-voltage system precharge module is less than 10V, if the condition is not met for 3s continuously, the multi-precharge PDU system controls the auxiliary high-voltage system precharge contactor (210) to be disconnected and sends a precharge failure signal of the auxiliary high-voltage system (700), and if the condition is met within 3s, the multi-precharge PDU system controls the auxiliary high-voltage system main contactor (230) to be attracted;
timing 100ms after the auxiliary high-voltage system main contactor (230) is closed;
and after the timing meets 100ms, the multi-precharge PDU system controls the auxiliary high-voltage system precharge contactor (210) to be disconnected and sends a precharge completion signal of the auxiliary high-voltage system (700).
6. The pre-charging method of the multi-pre-charging PDU system of the hydrogen energy automobile according to claim 4, wherein the flow of the hydrogen fuel cell high-voltage system (600) is specifically as follows:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the hydrogen fuel cell high-voltage system (600) or not is judged, and if not, the multi-precharge PDU system waits until the precharge command of the hydrogen fuel cell high-voltage system (600) is received;
after a pre-charging command of the hydrogen fuel cell high-voltage system (600) is received, the multi-pre-charging PDU system controls a pre-charging contactor (310) of the hydrogen fuel cell high-voltage system to pull in;
the multi-precharge PDU system judges that the absolute value of bus voltage of a power module (100) -bus voltage of a precharge module of a high-voltage system of the hydrogen fuel cell is less than 10V, if the condition is not met for 3S continuously, the multi-precharge PDU system controls a precharge contactor (310) of the high-voltage system of the hydrogen fuel cell to be disconnected and sends a precharge failure signal of the high-voltage system (600) of the hydrogen fuel cell, and if the condition is met within 3S, the multi-precharge PDU system controls the pre-main contactor (330) of the high-voltage system of the hydrogen fuel cell to be closed;
timing 100ms after a main contactor (330) of a hydrogen fuel cell high-voltage system is closed;
and after the timing meets 100ms, the multi-precharge PDU system controls the precharge contactor (310) of the hydrogen fuel cell high-voltage system to be disconnected and sends a precharge completion signal of the hydrogen fuel cell high-voltage system (600).
7. The pre-charging method of the multi-pre-charging PDU system of the hydrogen energy vehicle as claimed in claim 4, wherein the pre-charging process of the chassis driving high-voltage system (500) is specifically as follows:
the multi-precharge PDU system is ready;
whether the multi-precharge PDU system receives a precharge command of the chassis driving high-voltage system (500) or not is judged, and if not, the multi-precharge PDU system waits until the precharge command of the chassis driving high-voltage system (500) is received;
after a pre-charging command of the chassis driving high-voltage system (500) is received, the multi-pre-charging PDU system controls the chassis driving high-voltage system pre-charging contactor (410) to be closed;
the multi-precharge PDU system judges the absolute value of bus voltage of a power module (100) -chassis driving high-voltage system bus voltage is less than 10V, if the condition is not met for 3s continuously, the multi-precharge PDU system controls the chassis driving high-voltage system precharge contactor (410) to be disconnected and sends a chassis driving high-voltage system (500) precharge failure signal, and if the condition is met within 3s, the multi-precharge PDU system controls the chassis driving high-voltage system main contactor (430) to be attracted;
timing for 100ms after the chassis drives a main contactor (430) of the high-voltage system to suck;
and after the timing meets 100ms, the multi-precharge PDU system controls the chassis to drive the high-voltage system precharge contactor (410) to be disconnected and sends a signal for completing the precharge of the chassis driving high-voltage system (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011361380.3A CN112356676A (en) | 2020-11-27 | 2020-11-27 | Multi-pre-charging PDU system of hydrogen energy automobile and pre-charging method thereof |
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| CN202011361380.3A CN112356676A (en) | 2020-11-27 | 2020-11-27 | Multi-pre-charging PDU system of hydrogen energy automobile and pre-charging method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977175A (en) * | 2021-03-19 | 2021-06-18 | 黄冈格罗夫氢能汽车有限公司 | Pre-charging system for hydrogen energy automobile fuel cell bus |
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- 2020-11-27 CN CN202011361380.3A patent/CN112356676A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977175A (en) * | 2021-03-19 | 2021-06-18 | 黄冈格罗夫氢能汽车有限公司 | Pre-charging system for hydrogen energy automobile fuel cell bus |
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