CN109927573B - High-voltage integrated control system and method for new energy bus - Google Patents
High-voltage integrated control system and method for new energy bus Download PDFInfo
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- CN109927573B CN109927573B CN201910264656.7A CN201910264656A CN109927573B CN 109927573 B CN109927573 B CN 109927573B CN 201910264656 A CN201910264656 A CN 201910264656A CN 109927573 B CN109927573 B CN 109927573B
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- 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
- 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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Abstract
The invention discloses a high-voltage integrated control system and a high-voltage integrated control method for a new energy bus, wherein the system comprises an energy storage system module (1), a low-voltage power supply and control module (4), a main loop module (5), a DCDC loop module (3) and an off-board charging socket module (6); the off-board charging socket module is connected with the energy storage system module and sends a charging connection signal to the energy storage system module and the whole vehicle control module (45) for starting a charging process; the DCDC loop module comprises a DCDC contactor module (31), a DCDC module (32) and a DCDC pre-charging module (33), the DCDC contactor module and the DCDC pre-charging module are connected in parallel and then connected in series between the energy storage system module and the DCDC module, and the DCDC module is connected with a storage battery module (41). According to the invention, the manual large brake is not closed during charging, high voltage is directly converted through a DCDC power supply, and power is supplied to the low-voltage electronic module which needs to work during charging, so that the risk of power shortage of the storage battery is avoided; multiplexing the DCDC modules reduces the cost and complexity of the system.
Description
Technical Field
The invention relates to a high-voltage electric integrated control system of a new energy bus and a control method thereof, in particular to a high-voltage integrated control system of a new energy bus and a control method thereof.
Background
According to national regulations and the requirements of operation and maintenance of a bus company, a manual large brake needs to be installed near a low-voltage storage battery of the bus, and the manual large brake needs to be manually cut off after the bus stops running every day so as to ensure that a low-voltage power supply of the whole bus is cut off and prevent safety accidents. The new energy bus, especially the bus needing to be parked for a long time is usually charged at night, and the charging time is longer, generally requiring 3-4 hours; when the whole vehicle is charged, the remote monitoring module, the energy management module and the like on the whole vehicle need to work, low-voltage electricity needs to be consumed, and if only the storage battery is used for supplying power to the low-voltage electronic modules, the service life of the storage battery is easily shortened after long-term use.
To address this problem, the solutions commonly used in the prior art are: before charging the whole vehicle, a charging worker needs to close the manual large brake, and during charging, high-voltage electricity is converted into low-voltage electricity through the DCDC converter to charge the storage battery, and meanwhile, the low-voltage electricity is supplied to the low-voltage electronic module which needs to work during charging. However, the charging personnel often forget to turn off the large brake after charging, so that the storage battery is lack of power, and the service life of the storage battery is influenced.
In the prior art, a set of DCDC module is added on the basis of the existing structure, the DCDC module only works during parking charging so as to supply power to the low-voltage electronic module which needs to work during charging, and the scheme increases the cost and complexity of the system.
Disclosure of Invention
The invention aims to provide a high-voltage integrated control system and a control method of a new energy bus, wherein a manual large brake does not need to be closed during charging, high voltage is directly converted by a DCDC power supply during charging, and power is supplied to a low-voltage electronic module which needs to work during charging, so that the risk of power shortage of a storage battery is avoided; meanwhile, the DCDC module of the whole vehicle is multiplexed, so that the cost and the complexity of the system are reduced.
The invention is realized by the following steps:
a high-voltage integrated control system of a new energy bus comprises an energy storage system module, a low-voltage power supply and control module and a main loop module; the low-voltage power supply and control module is bidirectionally connected with the energy storage system module and the main loop module through a CAN bus; the low-voltage power supply and control module comprises a storage battery module, a power distribution module, a large brake module, a remote monitoring module and a whole vehicle control module, wherein the large brake module, the remote monitoring module and the whole vehicle control module are connected with the storage battery module;
the high-voltage integrated control system of the new energy bus further comprises a DCDC loop module and an off-board charging socket module; one end of the non-vehicle-mounted charging socket module is bidirectionally connected with the energy storage system module, the non-vehicle-mounted charging socket module sends a charging connection signal to the energy storage system module and the whole vehicle control module for starting a charging process, and the other end of the non-vehicle-mounted charging socket module is externally connected with a charging device of a non-vehicle-mounted charger; DCDC return circuit module passes through CAN bus and low pressure power supply and control module both way junction, and DCDC return circuit module includes DCDC contactor module, DCDC module and DCDC pre-charging module, concatenates between energy storage system module and DCDC module after DCDC contactor module and DCDC pre-charging module are parallelly connected, and DCDC pre-charging module makes DCDC contactor module closed through pre-charging, and the DCDC module is connected with battery module, charges for battery module and distribution module.
The high-voltage integrated control system of the new energy bus further comprises a manual maintenance switch, one end of the manual maintenance switch is in bidirectional connection with the energy storage system module, and the other end of the manual maintenance switch is connected with the DCDC loop module and the main loop module respectively.
The main circuit module comprises a main contactor module, a main circuit working module and a main pre-charging module, the main contactor module and the main pre-charging module are connected in parallel and then connected in series between the manual maintenance switch and the main circuit working module, and the main circuit working module is connected to the whole vehicle wiring harness.
The energy storage system module comprises an energy storage module and an energy storage management module, the energy storage management module is connected with the energy storage module in a bidirectional mode, and when the off-board charging socket module is connected to a charging device of the off-board charger, the off-board charging socket module sends a charging connection signal to the energy storage management module.
A high-voltage power-on and power-off control method for charging of a whole new energy bus high-voltage integrated control system comprises the following steps:
step 1: in the parking and charging state of the vehicle, the large brake module is disconnected, the charging device of the non-vehicle charger is connected with the non-vehicle charging socket module, and the non-vehicle charging socket module sends charging connection signals to the vehicle control module and the energy storage management module;
step 2: the whole vehicle control module detects a charging connection signal, and sends a control signal to the DCDC pre-charging module through the CAN bus to control the DCDC pre-charging module to pre-charge;
and step 3: after the pre-charging of the DCDC pre-charging module is finished, namely when the voltage difference between two ends of the DCDC contactor module meets a threshold value condition, the DCDC contactor module is closed to work;
and 4, step 4: starting the DCDC module to enable the DCDC module to work so as to supply power to the storage battery module and the power distribution module;
and 5: the energy storage system module starts a charging process and starts the remote monitoring module to work;
step 6: after the charging process is finished, the charging device of the non-vehicle-mounted charger is disconnected with the non-vehicle-mounted charging socket module, the whole vehicle control module detects that a charging connection signal is disconnected, the whole vehicle control module sends a command of 'forbidding enabling' to the DCDC module through the CAN bus, and the whole vehicle control module controls the DCDC module to stop working;
and 7: and (5) disconnecting the DCDC contactor module and finishing the high-voltage process under the whole vehicle.
In step 3, the threshold condition of the voltage difference is that the voltage difference is less than 5%.
A high-voltage power-on and power-off control method of a new energy bus high-voltage integrated control system during non-charging of a whole bus comprises the following steps:
step 1: when the vehicle runs, the large brake module is closed to work, and if the vehicle control module detects a high-voltage electrifying signal, the step 2 and the step 5 are executed at the same time;
step 2: the whole vehicle control module sends a control signal to the main pre-charging module through a CAN bus to control the main pre-charging module to pre-charge;
and step 3: after the pre-charging of the main pre-charging module is finished, namely when the voltage difference between two ends of the main contactor module meets a threshold value condition, the main contactor module is closed to work;
and 4, step 4: starting a main loop working module to enable working, and turning to the step 8;
and 5: the whole vehicle control module controls the DCDC pre-charging module to pre-charge;
step 6: after the pre-charging of the DCDC pre-charging module is finished, namely when the voltage difference between two ends of the DCDC contactor module meets a threshold value condition, the DCDC contactor module is closed to work;
and 7: starting the DCDC module to enable the DCDC module to work, and supplying power to the storage battery module and the power distribution module;
and 8: after the vehicle control module detects an electric signal under high voltage, the vehicle control module sends a command of 'forbidding enabling' to the main loop working module through the CAN bus to control the main loop working module to stop working;
and step 9: disconnecting the main contactor module, and stopping the main contactor module;
step 10: the whole vehicle control module controls the DCDC module to stop working;
step 11: and (5) disconnecting the DCDC contactor module and finishing the high-voltage process under the whole vehicle.
In the steps 3 and 6, the threshold condition of the voltage difference is that the voltage difference is less than 5%.
According to the invention, a manual large brake does not need to be closed during parking and charging, high voltage is directly converted by a DCDC power supply during charging, power is supplied to a low-voltage electronic module which needs to work during charging, and during normal driving, the large brake is closed, the DCDC module and a main loop work, so that the risk of power shortage of a storage battery caused by forgetting to disconnect the manual large brake is avoided; meanwhile, due to the fact that a whole vehicle DCDC module is reused, cost and complexity of the system are reduced, and the method has great popularization and application values for design of a high-voltage electrical system of a new energy bus and stable operation of the bus.
Drawings
FIG. 1 is a schematic structural diagram of a high-voltage integrated control system of a new energy bus;
FIG. 2 is a working flow chart of high-voltage power-on and power-off of the new energy bus high-voltage integrated control system during charging of the whole bus;
FIG. 3 is a working flow chart of high-voltage power-on and power-off of the new energy bus high-voltage integrated control system when the whole bus is not charged.
In the figure, 1 energy storage system module, 11 energy storage module, 12 energy storage management module, 2 manual maintenance switch (MSD module), 3 DCDC loop module, 31 DCDC contactor module, 32 DCDC module, 33 DCDC pre-charging module, 4 low-voltage power supply and control module, 41 storage battery module, 42 large brake module, 43 remote monitoring module, 44 power distribution module, 441 ignition switch module, 442 low-voltage power distribution module, 45 entire vehicle control module, 5 main loop module, 51 main contactor module, 52 main driving module, 53 accessory loop module, 531 air pump module, 532 oil pump module, 533 air conditioner module, 534 defrosting module, 535 heating module, 54 main pre-charging module, 6 non-vehicle charging socket module.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the thick arrow line indicates the high voltage, the thin arrow line indicates the low voltage, and the dotted line indicates the information flow of the CAN bus.
A high-voltage integrated control system of a new energy bus comprises an energy storage system module 1, a low-voltage power supply and control module 4 and a main loop module 5; the low-voltage power supply and control module 4 is bidirectionally connected with the energy storage system module 1 and the main loop module 5 through a CAN bus; the low-voltage power supply and control module 4 comprises a storage battery module 41, a power distribution module 44, a large brake module 42 connected with the storage battery module 41, a remote monitoring module 43 and a whole vehicle control module 45, wherein the large brake module 42 is connected with the whole vehicle control module 45 through the power distribution module 44, the storage battery module 41 supplies power to the large brake module 42, the remote monitoring module 43, the power distribution module 44 and the whole vehicle control module 45, and when the large brake module 42 is disconnected, the storage battery module 41 stops supplying power to the power distribution module 44. The energy storage system module 1 is bidirectionally connected with a large brake module 42, a remote monitoring module 43 and a whole vehicle control module 45 of the low-voltage power supply and control module 4, and the energy storage system module 1 is connected with the main loop module 5.
The high-voltage integrated control system of the new energy bus further comprises a DCDC loop module 3 and an off-board charging socket module 6; one end of the non-vehicle-mounted charging socket module 6 is bidirectionally connected with the energy storage system module 1, the non-vehicle-mounted charging socket module 6 sends a charging connection signal to the energy storage system module 1 and the whole vehicle control module 45 for starting a charging process, and the other end of the non-vehicle-mounted charging socket module 6 is externally connected with a charging device of a non-vehicle-mounted charger; the DCDC loop module 3 is bidirectionally connected with the low-voltage power supply and control module 4 through a CAN bus, and the DCDC loop module 3 comprises a DCDC contactor module 31, a DCDC module 32 and a DCDC pre-charging module 33; the DCDC contactor module 31 and the DCDC pre-charging module 33 are connected in parallel and then connected in series between the energy storage system module 1 and the DCDC module 32, and the DCDC module 32 is connected with the storage battery module 41. The DCDC loop module 3 converts high voltage electricity into low voltage power for low voltage consumers, which can be used to charge the battery module 41 and the power distribution module 44. When the DCDC module 32 needs to work, the DCDC pre-charging module 33 needs to work first, and when the voltage difference between the two ends of the DCDC contactor module 31 meets a certain threshold condition, the DCDC contactor module 31 is closed, and then the DCDC pre-charging module 33 is opened.
The new energy bus high-voltage integrated control system further comprises a manual maintenance switch (namely an MSD module) 2, one end of the manual maintenance switch 2 is in two-way connection with the energy storage system module 1, the other end of the manual maintenance switch 2 is respectively connected with the DCDC loop module 3 and the main loop module 5, the manual maintenance switch 2 is disconnected, the effect of safety protection can be achieved when the current in the loop exceeds the limit value, and meanwhile, high voltage damage to maintenance personnel is prevented during vehicle high-voltage maintenance.
The energy storage system module 1 comprises an energy storage module 11 and an energy storage management module 12, the energy storage management module 12 is in bidirectional connection with the energy storage module 11, the energy storage management module 12 manages charging and discharging of the energy storage module 11, and when the non-vehicle charging socket module 6 is connected to a charging device of a non-vehicle charger, the non-vehicle charging socket module 6 sends a charging connection signal to the energy storage management module 12 so that the energy storage management module 12 starts a charging process.
The main circuit module 5 comprises a main contactor module 51, a main circuit working module and a main pre-charging module 54, the main contactor module 51 and the main pre-charging module 54 are connected in parallel and then connected in series between the manual maintenance switch 2 and the main circuit working module, and the main circuit working module is connected to the whole vehicle wiring harness. When the main circuit operating module is required to operate, the main pre-charging module 54 needs to operate first, and when the voltage difference between the two ends of the main contactor module 51 meets a certain threshold condition, the main contactor module 51 is closed, and then the main pre-charging module 54 is opened.
The main loop working module comprises a main driving module 52 and an accessory loop module 53, the main driving module 52 is connected to a whole vehicle driving system, the accessory loop module 53 is connected to a whole vehicle accessory system, and the main loop module 5 supplies power to the main driving module 52 and the accessory loop module 53 so that the whole vehicle driving system and the accessory system can work normally. The accessory circuit module 53 includes an air pump module 531, an oil pump module 532, an air conditioning module 533, a defrost module 534, and a heating module 535.
The power distribution module 44 includes an ignition switch module 441 and a low-voltage power distribution module 442, the ignition switch module 441 is bidirectionally connected to the low-voltage power distribution module 442, the ignition switch module 441 is used to determine a power mode, and the low-voltage power distribution module 442 is mainly used for distribution of low-voltage power.
Referring to the attached drawings 1 and 2, a control method for high-voltage power on and off of a new energy bus high-voltage integrated control system during charging of a whole bus comprises the following steps:
step 1: in the vehicle parking charging state, the large brake module 42 is disconnected, the charging device of the non-vehicle charger is connected with the non-vehicle charging socket module 6, and the non-vehicle charging socket module 6 sends charging connection signals to the vehicle control module 45 and the energy storage management module 12.
Step 2: the whole vehicle control module 45 detects the charging connection signal, and the whole vehicle control module 45 sends a control signal to the DCDC pre-charging module 33 through the CAN bus to control the DCDC pre-charging module 33 to pre-charge. And step 3: after the pre-charging of the DCDC pre-charging module 33 is completed, that is, when the voltage difference between the two ends of the DCDC contactor module 31 meets a certain threshold condition, if the voltage difference is less than 5%, the DCDC contactor module 31 is closed to work.
And 4, step 4: the DCDC module 32 is enabled to operate to supply power to the battery module 41 and the power distribution module 44.
And 5: the energy storage management module 12 of the energy storage system module 1 starts the charging process and starts the remote monitoring module 43 to operate.
Step 6: after the charging process is finished, the non-vehicle charging connection device is disconnected with the non-vehicle charging socket module 6, the whole vehicle control module 45 detects that the charging connection signal is disconnected, the whole vehicle control module 45 sends an instruction of 'disable enable' to the DCDC module 32 through the CAN bus, and the DCDC module 32 is controlled to stop working.
And 7: and (5) disconnecting the DCDC contactor module 31 to finish the high-voltage process under the whole vehicle.
Referring to fig. 3, a control method for high-voltage power on and off of a new energy bus high-voltage integrated control system during non-charging of a whole bus includes the following steps:
step 1: when the vehicle runs, the large brake module 42 is closed to work, the vehicle control module 45 detects a high-voltage electrifying signal, and the step 2 and the step 5 are executed at the same time.
Step 2: the vehicle control module 45 sends a control signal to the main pre-charging module 54 through the CAN bus to control the main pre-charging module 54 to perform pre-charging.
And step 3: after the pre-charging of the main pre-charging module 54 is completed, that is, when the voltage difference between the two ends of the main contactor module 51 meets a certain threshold condition, if the voltage difference is less than 5%, the main contactor module 51 is closed to work.
And 4, step 4: the main drive module 52 and the accessory circuit module 53 are enabled and the process goes to step 8.
And 5: the vehicle control module 45 controls the DCDC pre-charging module 33 to perform pre-charging.
Step 6: after the pre-charging of the DCDC pre-charging module 33 is completed, that is, when the voltage difference between the two ends of the DCDC contactor module 31 meets a certain threshold condition, if the voltage difference is less than 5%, the DCDC contactor module 31 is closed to work.
And 7: the DCDC module 32 is enabled to supply power to the battery module 41 and the power distribution module 44.
And 8: after the vehicle control module 45 detects the electrical signal under high voltage, the vehicle control module 45 sends a command "disable enable" to the main drive module 52 and the accessory loop module 53 through the CAN bus, and controls the main drive module 52 and the accessory loop module 53 to stop working.
And step 9: the main contactor module 51 is opened and the main contactor module 51 stops operating.
Step 10: the vehicle control module 45 sends a command of 'disable enable' to the DCDC module 32 through the CAN bus, and controls the DCDC module 32 to stop working.
Step 11: and (5) disconnecting the DCDC contactor module 31 to finish the high-voltage process under the whole vehicle.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high-voltage integrated control system of a new energy bus comprises an energy storage system module (1), a low-voltage power supply and control module (4) and a main loop module (5); the low-voltage power supply and control module (4) is in bidirectional connection with the energy storage system module (1) and the main loop module (5) through a CAN bus; the low-voltage power supply and control module (4) comprises a storage battery module (41), a power distribution module (44), a large brake module (42) connected with the storage battery module (41), a remote monitoring module (43) and a whole vehicle control module (45), wherein the large brake module (42) is connected with the whole vehicle control module (45) through the power distribution module (44), the storage battery module (41) supplies power to the large brake module (42), the remote monitoring module (43), the power distribution module (44) and the whole vehicle control module (45), the energy storage system module (1) is bidirectionally connected with the large brake module (42) of the low-voltage power supply and control module (4), the remote monitoring module (43) and the whole vehicle control module (45), and the energy storage system module (1) is connected with the main loop module (5);
the method is characterized in that: the high-voltage integrated control system of the new energy bus further comprises a DCDC loop module (3) and an off-board charging socket module (6); one end of the non-vehicle-mounted charging socket module (6) is bidirectionally connected with the energy storage system module (1), the non-vehicle-mounted charging socket module (6) sends a charging connection signal to the energy storage system module (1) and the whole vehicle control module (45) for starting a charging process, and the other end of the non-vehicle-mounted charging socket module (6) is externally connected with a charging device of a non-vehicle-mounted charger; the DCDC loop module (3) is bidirectionally connected with the low-voltage power supply and control module (4) through a CAN bus, and the DCDC loop module (3) comprises a DCDC contactor module (31), a DCDC module (32) and a DCDC pre-charging module (33); the DCDC contactor module (31) and the DCDC pre-charging module (33) are connected in parallel and then connected in series between the energy storage system module (1) and the DCDC module (32), the DCDC pre-charging module (33) enables the DCDC contactor module (31) to be closed through pre-charging, and the DCDC module (32) is connected with the storage battery module (41) and charges the storage battery module (41) and the power distribution module (44);
the high-voltage integrated control system of the new energy bus further comprises a manual maintenance switch (2), one end of the manual maintenance switch (2) is connected with the energy storage system module (1) in a bidirectional mode, and the other end of the manual maintenance switch (2) is connected with the DCDC loop module (3) and the main loop module (5) respectively;
the main circuit module (5) comprises a main contactor module (51), a main circuit working module and a main pre-charging module (54), the main contactor module (51) and the main pre-charging module (54) are connected in parallel and then connected in series between the manual maintenance switch (2) and the main circuit working module, and the main circuit working module is connected to the whole vehicle wiring harness.
2. The new energy bus high-voltage integrated control system as claimed in claim 1, wherein: the energy storage system module (1) comprises an energy storage module (11) and an energy storage management module (12), the energy storage management module (12) is connected with the energy storage module (11) in a two-way mode, and when the non-vehicle-mounted charging socket module (6) is connected to a charging device of a non-vehicle-mounted charger, the non-vehicle-mounted charging socket module (6) sends a charging connection signal to the energy storage management module (12).
3. A whole vehicle high-voltage power-on and power-off control method adopting the new energy bus high-voltage integrated control system of claim 1 is characterized in that: the method comprises the following steps:
during charging:
step 11: in the parking and charging state of the vehicle, the large brake module (42) is disconnected, the charging device of the off-board charger is connected with the off-board charging socket module (6), and the off-board charging socket module (6) sends a charging connection signal to the vehicle control module (45) and the energy storage management module (12);
step 12: when the vehicle control module (45) detects the charging connection signal, the vehicle control module (45) sends a control signal to the DCDC pre-charging module (33) through the CAN bus to control the DCDC pre-charging module (33) to pre-charge;
step 13: after the DCDC pre-charging module (33) is pre-charged, namely when the voltage difference between two ends of the DCDC contactor module (31) meets a threshold value condition, the DCDC contactor module (31) is closed to work;
step 14: starting the DCDC module (32) to enable the DCDC module to work, and supplying power to the storage battery module (41) and the power distribution module (44);
step 15: the energy storage system module (1) starts a charging process and starts a remote monitoring module (43) to work;
step 16: after the charging process is finished, the charging device of the non-vehicle-mounted charger is disconnected with the non-vehicle-mounted charging socket module (6), the vehicle control module (45) detects that the charging connection signal is disconnected, the vehicle control module (45) sends a command of 'forbidding enabling' to the DCDC module (32) through the CAN bus, and the DCDC module (32) is controlled to stop working;
and step 17: disconnecting the DCDC contactor module (31) and finishing the high-voltage process under the whole vehicle;
when not charging:
step 21: when the vehicle runs, the large brake module (42) is closed to work, the vehicle control module (45) detects a high-voltage electrifying signal, and simultaneously executes the step 22 and the step 25;
step 22: the whole vehicle control module (45) sends a control signal to the main pre-charging module (54) through the CAN bus to control the main pre-charging module (54) to pre-charge;
step 23: after the main pre-charging module (54) is pre-charged, namely when the voltage difference between two ends of the main contactor module (51) meets a threshold value condition, the main contactor module (51) is closed to work;
step 24: starting a main loop working module to enable working, and turning to step 28;
step 25: the whole vehicle control module (45) controls the DCDC pre-charging module (33) to pre-charge;
step 26: after the DCDC pre-charging module (33) is pre-charged, namely when the voltage difference between two ends of the DCDC contactor module (31) meets a threshold value condition, the DCDC contactor module (31) is closed to work;
step 27: starting the DCDC module (32) to enable the DCDC module to work, and supplying power to the storage battery module (41) and the power distribution module (44);
step 28: after the vehicle control module (45) detects an electric signal under high voltage, the vehicle control module (45) sends a command of 'forbidding enabling' to the main loop working module through the CAN bus to control the main loop working module to stop working;
step 29: disconnecting the main contactor module (51), and stopping the main contactor module (51);
step 210: the whole vehicle control module (45) sends a command of 'forbidding enabling' to the DCDC module (32) through the CAN bus, and controls the DCDC module (32) to stop working;
step 211: and (5) disconnecting the DCDC contactor module (31) and finishing the high-voltage process under the whole vehicle.
4. The whole vehicle high-voltage power-on and power-off control method of the new energy bus high-voltage integrated control system according to claim 3, characterized by comprising the following steps: in step 13, the threshold condition of the voltage difference is that the voltage difference is less than 5%.
5. The whole vehicle high-voltage power-on and power-off control method of the new energy bus high-voltage integrated control system according to claim 3, characterized by comprising the following steps: in the steps 23 and 26, the threshold condition of the voltage difference is that the voltage difference is less than 5%.
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| CN201910264656.7A CN109927573B (en) | 2019-04-03 | 2019-04-03 | High-voltage integrated control system and method for new energy bus |
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| CN105656122B (en) * | 2016-02-02 | 2019-01-04 | 奇瑞汽车股份有限公司 | A kind of DC-DC converter for new-energy automobile |
| CN206559220U (en) * | 2017-03-03 | 2017-10-13 | 上海思致汽车工程技术有限公司 | A kind of portable power TED transferred electron device |
| CN108016312A (en) * | 2017-11-30 | 2018-05-11 | 广州汽车集团股份有限公司 | The high-pressure system and control method of a kind of new-energy automobile |
| CN108583286A (en) * | 2018-04-25 | 2018-09-28 | 安徽华菱汽车有限公司 | A kind of pure electric coach high pressure power-on and power-off strategy |
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| CN109435711A (en) * | 2018-11-02 | 2019-03-08 | 浙江合众新能源汽车有限公司 | A kind of new-energy automobile low tension battery preventing electric loss system and method |
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