CN111146833A - Discharge control method and device for high-voltage system, vehicle and storage medium - Google Patents
Discharge control method and device for high-voltage system, vehicle and storage medium Download PDFInfo
- Publication number
- CN111146833A CN111146833A CN201911265041.2A CN201911265041A CN111146833A CN 111146833 A CN111146833 A CN 111146833A CN 201911265041 A CN201911265041 A CN 201911265041A CN 111146833 A CN111146833 A CN 111146833A
- Authority
- CN
- China
- Prior art keywords
- voltage
- discharge
- vehicle
- discharging
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses a discharge control method and device for a high-voltage system, a vehicle and a storage medium. The method comprises the following steps: the method comprises the steps that when a disconnection signal of a main negative relay is received, an enabling command is sent to a discharging device, and the discharging device is controlled to discharge; when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging. By controlling the discharging device to discharge, the input voltage of the high-voltage assembly can be reduced to the safe voltage within a few seconds, the occurrence probability of short circuit and electric shock is reduced, and the safety of the vehicle is improved. The voltage and the current are continuously reduced for a period of time after being reduced to a safe range by setting the time delay, so that the voltage and the current are ensured to be in the safe range, and the safety of the vehicle is improved.
Description
Technical Field
The embodiment of the invention relates to an automobile discharge technology, in particular to a discharge control method and device for a high-voltage system, a vehicle and a storage medium.
Background
For a high-voltage electric automobile, when a driver maintains or trims the automobile after putting an ignition switch in an OFF gear, if the voltage amplitude of a high-voltage system (a whole automobile high-voltage loop or a high-voltage assembly) is higher than a human body safety voltage, electric shock danger is caused, so that the high-voltage assembly is required to discharge quickly after the ignition switch is changed from an ON gear to an OFF gear, and the voltage of the high-voltage system is quickly reduced to be lower than the human body safety voltage.
At present, most pure electric commercial vehicles have a quick discharge function only through a driving motor when discharging. The system voltage is reduced to the human body safety voltage through the quick discharge of the driving motor, so that the safety of the whole vehicle is ensured. However, in the process of voltage drop of a high-voltage system, because a high-pressure air pump, a high-pressure oil pump and the like do not have a quick discharge function, the voltage amplitude drop rate of a high-voltage assembly is only a few volts per second, and the voltage drop below the human body safety voltage is dozens of seconds, so that electric shock accidents are easily caused.
Disclosure of Invention
The invention provides a discharge control method and device for a high-voltage system, a vehicle and a storage medium, so as to realize rapid discharge of an electric vehicle.
In a first aspect, an embodiment of the present invention provides a discharge control method for a high voltage system, where the discharge control method for the high voltage system includes:
when a disconnection signal of the main and negative relays is received, an enabling command is sent to the discharging device to control the discharging device to discharge;
when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging.
In a second aspect, an embodiment of the present invention further provides a discharge control device for a high voltage system, where the discharge control device for a high voltage system includes:
the discharging control module is used for sending an enabling command to the discharging device to control the discharging device to discharge when receiving a disconnection signal of the main and negative relays;
and the discharge stopping module is used for sending a discharge forbidding enabling command to the discharge device after setting time delay and controlling the discharge device to stop discharging when the bus voltage and the current of each high-voltage assembly device meet the set safety conditions and the bus voltage difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value.
In a third aspect, an embodiment of the present invention further provides a vehicle, including:
a high voltage system for vehicle power supply;
one or more controllers;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more controllers, the one or more controllers implement a discharge control method for a high voltage system according to any one of the embodiments of the present invention.
In a fourth aspect, the embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a discharge control method for a high-voltage system according to any one of the embodiments of the present invention.
According to the embodiment of the invention, when a disconnection signal of a main relay and a negative relay is received, an enabling command is sent to a discharging device to control the discharging device to discharge; when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging. The discharging device is controlled to discharge, the input voltage of the high-voltage assembly can be reduced to be lower than the safety voltage of a human body within a few seconds, the occurrence probability of high-voltage short circuit and electric shock of high-voltage personnel is reduced, and the safety of a vehicle is improved. The voltage and the current are continuously reduced for a period of time after being reduced to a safe range by setting time delay, so that the voltage and the current are ensured to be in the safe range, and the safety of the vehicle is improved.
Drawings
Fig. 1 is a flowchart of a discharge control method for a high-voltage system according to a first embodiment of the present invention;
FIG. 2 is a diagram illustrating an exemplary topology of a high voltage system according to a first embodiment of the present invention;
fig. 3 is a flowchart of a discharge control method for a high-voltage system according to a second embodiment of the present invention;
fig. 4 is a flowchart of a method for controlling discharge of a motor according to a second embodiment of the present invention;
FIG. 5 is a flowchart of a method for controlling the opening of the main and negative relays according to a second embodiment of the present invention;
fig. 6 is a structural diagram of a discharge control apparatus for a high-voltage system in a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a discharge control method for a high-voltage system according to an embodiment of the present invention, and fig. 2 is a diagram of an example of a topology of the high-voltage system, in which a power battery is connected to all devices in the system for supplying power to all devices in the system; the driving motor is connected with the pre-charging relay and the main positive relay, is connected with the power battery through the main negative relay and is used for providing power during the running of the vehicle; the oil pump is connected with the accessory relay, is connected with the power battery through the main negative relay and is used for pumping oil in the running process of the vehicle; the air pump is connected with the accessory relay, is connected with the power battery through the main negative relay and is used for air circulation in the running process of the vehicle; the air conditioner is connected with the accessory relay, is connected with the power battery through the main and negative relays, is used for cooling or heating in the running process of the vehicle and can also be used for consuming electric energy when the vehicle stops; the PTC (positive temperature Coefficient) is connected with the PTC relay, is connected with the power battery through the main negative relay and is used for consuming electric energy when the vehicle stops; the Direct Current (DC) relay is connected with the DC relay and is connected with the power battery through the main and negative relay, and the DC relay is used for converting high-voltage DC into low-voltage DC or converting low-voltage DC into high-voltage DC. The present embodiment may be applicable to control of the discharge condition of the high voltage system, and the method may be executed by a discharge control device of the high voltage system, and specifically includes the following steps:
and 110, when a disconnection signal of the main and negative relays is received, sending an enabling command to the discharging device to control the discharging device to discharge.
The open signal can be understood to mean a signal indicating that the main and negative relays are open; the enable command may be understood in particular as a control command for controlling the discharge of the discharge device; a discharge device is understood to mean in particular a device for consuming electrical energy.
Specifically, the manner of receiving the turn-off signal of the main and negative relays may be by receiving an electrical signal, and the discharging device may be an air conditioner, a PTC, or other devices consuming electrical energy, and the discharging device discharges according to the received control command.
And 120, when the bus voltage and the current of each high-voltage assembly device are monitored to meet the set safety conditions and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, sending a discharge forbidding enabling command to the discharge device after the set time delay, and controlling the discharge device to stop discharging.
The high-pressure assembly device can be specifically understood as a high-pressure device in a high-pressure system of a vehicle, and can be an air pump, an oil pump, a DCDC (direct current) and the like; the set safety condition can be specifically understood as the preset maximum voltage value and current value meeting the human body safety condition; the preset voltage value can be specifically understood as a preset voltage value and is used for judging whether the current voltage is safe or not; the set delay time can be specifically understood as preset time and is used for delaying the sending of a discharge prohibition enabling command; the discharge disable enable command may be understood in particular as a control command for controlling the discharge device to stop discharging.
Specifically, when the bus voltage and the current of each high-voltage assembly device are monitored to meet the safe voltage value and the safe current value, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than the set voltage value, after the set time delay, a discharge forbidding enabling command is sent to the discharge device, and the discharge device is controlled to stop discharging.
According to the embodiment of the invention, when a disconnection signal of a main relay and a negative relay is received, an enabling command is sent to a discharging device to control the discharging device to discharge; when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging. The discharging device is controlled to discharge, the input voltage of the high-voltage assembly can be reduced to be lower than the safety voltage of a human body within a few seconds, the occurrence probability of high-voltage short circuit and electric shock of high-voltage personnel is reduced, and the safety of a vehicle is improved. The voltage and the current are continuously reduced for a period of time after being reduced to a safe range by setting time delay, so that the voltage and the current are ensured to be in the safe range, and the safety of the vehicle is improved.
Example two
Fig. 3 is a flowchart of a discharge control method for a high-voltage system according to a second embodiment of the present invention. The technical scheme of the embodiment is further refined on the basis of the technical scheme, and specifically mainly comprises the following steps:
and step 21, receiving a power-off trigger signal, and controlling the motor to discharge.
Wherein, the specific power-off can be understood as power-off; the power-off trigger signal can be specifically understood as a control signal for indicating a signal for starting a power-off process; an electric machine is understood in particular to mean a device mounted on a vehicle for providing vehicle power.
Specifically, the power-OFF trigger signal may be a signal triggered by the ignition switch being switched from the ON gear to the OFF gear, and when the power-OFF trigger signal is received, the motor is controlled to discharge to consume the energy stored in the capacitor at the input end of the high-voltage assembly and the high-voltage loop.
Further, fig. 4 is a flowchart of a method for controlling the motor discharge, where the method for controlling the motor discharge specifically includes the following steps:
and step 211, receiving a power-off trigger signal, and sending a motor disabling enabling command to the motor controller.
The motor disable enable command can be specifically understood as a control command for controlling the motor disable; the motor controller can be specifically understood as an integrated circuit in the motor, which controls the motor to work according to the set direction, speed, angle and response time.
Specifically, the manner of receiving the power-off trigger signal may be by receiving an electrical signal; and when receiving the power-off trigger signal, sending a motor forbidding enabling command to the motor controller.
And 212, receiving a motor power-off signal fed back by the motor controller, disconnecting the main relay and the pre-charging relay, sending a discharging command to the motor, and controlling the motor to discharge.
The motor power-off electric signal can be specifically understood as a control signal used for feeding back power-off information to the vehicle control unit by the motor controller; a discharge command is understood in particular to mean a control command for controlling the discharge of the electric machine.
Specifically, the motor power-off signal fed back by the motor controller indicates that a power-off operation process can be started, and when the motor power-off signal fed back by the motor controller is received, the main relay and the pre-charging relay are disconnected, and a discharging command is sent to the motor to control the motor to discharge so as to consume energy stored in the capacitor at the input end of the high-voltage assembly and the high-voltage loop.
And step 22, sending a high-voltage disabling enabling command to control the main and negative relays to be switched off after the motor discharge is monitored to be completed.
The high-voltage disabling enable command may be understood to be a control command for controlling the main and negative relays to open according to the command.
Specifically, the main and negative relays may be controlled to be turned off by sending a signal; and after the motor finishes discharging, the main and negative relays are controlled to be switched off by sending a high-voltage disabling enabling command.
Further, fig. 5 is a flowchart of a method for controlling the main and negative relays to open, where a high-voltage disable enable command is sent, and the method for controlling the main and negative relays to open specifically includes the following steps:
step 221, sending the high voltage disable enable command to each high voltage assembly device.
And step 222, receiving a high-voltage power-off signal fed back by each high-voltage assembly device, monitoring that the bus current of the power battery is smaller than a preset current value, and sending a disconnection command when each high-voltage assembly device is in a non-working state so as to control the main and negative relays to be disconnected through the disconnection command.
The high-voltage electric signal can be specifically understood as a control signal used for feeding back information of available electric power to the vehicle controller by the high-voltage device; the preset current value can be specifically understood as a preset current value and is used for judging whether all high-voltage loads in the loop stop working or not; the open command is understood to mean in particular a control command for controlling the opening of the main and negative relays.
Specifically, the high-voltage lower electric signal fed back by each high-voltage assembly device indicates that the electrical operation process can be started; and after receiving the high-voltage power-off electric signals fed back by the high-voltage assembly devices, monitoring that the bus current of the power battery is smaller than a preset current value, and when the high-voltage assembly devices are in a non-working state, controlling the main and negative relays to be switched off by sending a switching-off command.
Through the monitoring to loop current and assembly busbar voltage, can control the relay and break off the whole disconnection of load when breaking, play the guard action to the circuit.
And 23, when the disconnection signal of the main and negative relays is received, sending an enabling command to the discharging device to control the discharging device to discharge.
And 24, when the bus voltage and the current of each high-voltage assembly device meet the set safety conditions and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, sending a discharge forbidding enabling command to the discharge device after the set time delay, and controlling the discharge device to stop discharging.
Illustratively, the discharging device takes the PTC as an example, the vehicle controller monitors the bus voltage and the current value of the high-voltage assemblies such as the air pump, the oil pump and the DCDC in real time, when the bus voltage of all the assemblies is smaller than the human body safety voltage, the current value is smaller than 1A, and the difference value between the bus voltage of each assembly and the bus voltage of the power battery is smaller than 30V, the vehicle controller sends an enable forbidding command to the PTC after delaying for 0.5 second, forbids the PTC to enable, disconnects the relay of each high-voltage loop, and finishes the high-voltage power-off process.
And 25, disconnecting the relays in the high-voltage loops.
The high-voltage circuit is understood to be a circuit formed by devices in a high-voltage system.
Specifically, the relay in each high-voltage circuit may be opened by sending a signal to control the relay to open.
And 26, when the occurrence of device faults in the high-voltage system of the vehicle is monitored, the relays in the high-voltage loops are disconnected.
The device faults can be finished automobile insulation resistance, PTC controller faults, air pump faults, oil pump faults and/or main and negative relay faults and the like.
And 27, when the power-on trigger signal is received and all devices in the vehicle high-voltage system meet power-on conditions, controlling the current discharge device in the vehicle high-voltage system to stop discharging and enter a high-voltage power-on process.
The power-on trigger signal can be specifically understood as a control signal used for indicating a signal for starting a power-on process; the power-on condition can be specifically understood as a condition for executing a power-on process in a vehicle high-voltage system; the present discharge device may be understood in particular as the device currently executing the discharge command.
Specifically, the power-ON trigger signal may be a signal triggered by the ignition switch being switched from the OFF gear to the ON gear; the vehicle discharging process at least comprises motor discharging and discharging of a discharging device, when a power-on trigger signal is received, the current discharging device can be a motor or a discharging device, and the current discharging device is controlled to stop discharging and enter a high-voltage power-on process.
According to the embodiment of the invention, when a disconnection signal of a main relay and a negative relay is received, an enabling command is sent to a discharging device to control the discharging device to discharge; when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging. The discharging device is controlled to discharge, the input voltage of the high-voltage assembly can be reduced to be lower than the safety voltage of a human body within a few seconds, the occurrence probability of high-voltage short circuit and electric shock of high-voltage personnel is reduced, and the safety of a vehicle is improved. The voltage and the current are continuously reduced for a period of time after being reduced to a safe range by setting time delay, so that the voltage and the current are ensured to be in the safe range, and the safety of the vehicle is improved; through the monitoring to loop current and assembly busbar voltage, can control the relay and break off the whole disconnection of load when breaking, play the guard action to the circuit.
EXAMPLE III
Fig. 6 is a structural diagram of a discharge control device for a high-voltage system according to a third embodiment of the present invention, where the discharge control device includes: a discharge control module 31 and a stop discharge module 32.
The discharging control module 31 is configured to send an enable command to the discharging device to control the discharging device to discharge when receiving a turn-off signal of the main and negative relays; and the discharge stopping module 32 is configured to send a discharge disabling enabling command to the discharge device after a set delay time when it is monitored that the bus voltage and the current of each high-voltage assembly device meet the set safety condition and the bus voltage difference between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, and control the discharge device to stop discharging.
According to the embodiment of the invention, when a disconnection signal of a main relay and a negative relay is received, an enabling command is sent to a discharging device to control the discharging device to discharge; when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging. The discharging device is controlled to discharge, the input voltage of the high-voltage assembly can be reduced to be lower than the safety voltage of a human body within a few seconds, the occurrence probability of high-voltage short circuit and electric shock of high-voltage personnel is reduced, and the safety of a vehicle is improved. The voltage and the current are continuously reduced for a period of time after being reduced to a safe range by setting time delay, so that the voltage and the current are ensured to be in the safe range, and the safety of the vehicle is improved.
Further, the apparatus further comprises:
and the receiving module is used for receiving the power-off trigger signal and controlling the motor to discharge.
And the first disconnection module is used for sending a high-voltage forbidding enabling command to control the main and negative relays to be disconnected after monitoring that the motor finishes discharging.
Further, the receiving module includes:
the first sending unit is used for receiving a power-off trigger signal and sending a motor disabling enabling command to the motor controller;
and the control unit is used for receiving a motor lower electric signal fed back by the motor controller, disconnecting the main relay and the pre-charging relay, sending a discharging command to the motor and controlling the motor to discharge.
Further, the disconnection module includes:
a second transmitting unit for transmitting the high voltage disable enable command to each of the high voltage assembly devices;
and the third sending unit is used for receiving the high-voltage power-off electric signals fed back by the high-voltage assembly devices, monitoring that the bus current of the power battery is smaller than a preset current value, and sending a disconnection command when the high-voltage assembly devices are in a non-working state so as to control the main and negative relays to be disconnected through the disconnection command.
Further, the apparatus further comprises:
and the second disconnection module is used for disconnecting the relays in the high-voltage loops.
Further, the apparatus further comprises:
and the third disconnection module is used for disconnecting the relays in the high-voltage loops when the occurrence of device faults in the high-voltage system of the vehicle is monitored.
Further, the apparatus further comprises:
and the power-on module is used for controlling the current discharge device in the vehicle high-voltage system to stop discharging and enter a high-voltage power-on process when the power-on trigger signal is received and all devices in the vehicle high-voltage system meet the power-on condition.
The discharge control device for the high-voltage system provided by the embodiment of the invention can execute the discharge control method for the high-voltage system provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 7 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention, as shown in fig. 7, the vehicle includes a high-voltage system 40, a controller 41, a memory 42, an input device 43, and an output device 44; the number of the controllers 41 in the vehicle may be one or more, and one controller 41 is illustrated in fig. 7; the controller 41, the memory 42, the input device 43, and the output device 44 in the vehicle may be connected by a bus or other means, and the bus connection is exemplified in fig. 7.
A high voltage system 40 for vehicle power supply; the memory 42 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the exhaust pipe wall temperature determination method in the embodiment of the present invention (for example, the discharge control module 31 and the discharge stopping module 32 in the discharge control method for the high-voltage system). The controller 41 executes various functional applications and data processing of the vehicle, that is, implements the above-described exhaust pipe wall temperature determination method, by executing software programs, instructions, and modules stored in the memory 42.
The memory 42 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 42 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 42 may further include memory remotely located from the controller 41, which may be connected to the vehicle over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 42 is operable to receive input numeric or character information and to generate key signal inputs relating to user settings and function controls of the vehicle. The output device 43 may include a display device such as a display screen.
EXAMPLE five
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, where the computer-executable instructions are executed by a computer processor to perform a discharge control method for a high voltage system, and the method includes:
when a disconnection signal of the main and negative relays is received, an enabling command is sent to the discharging device to control the discharging device to discharge;
when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the operations of the method described above, and may also perform related operations in the discharge control method of the high voltage system provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the discharge control device of the high-voltage system, the included units and modules are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A discharge control method for a high voltage system, comprising:
when a disconnection signal of the main and negative relays is received, an enabling command is sent to the discharging device to control the discharging device to discharge;
when the bus voltage and the current of each high-voltage assembly device are monitored to meet set safety conditions, and the difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value, a discharge forbidding enabling command is sent to the discharge device after a set time delay, and the discharge device is controlled to stop discharging.
2. The method of claim 1, further comprising, prior to receiving the open signal of the main negative relay:
receiving a power-off trigger signal, and controlling the motor to discharge;
and sending a high-voltage disabling enabling command to control the main and negative relays to be switched off after the motor is monitored to be discharged.
3. The method of claim 2, wherein receiving the power-down trigger signal to control the motor to discharge comprises:
receiving a power-off trigger signal, and sending a motor disabling enable command to a motor controller;
and receiving a motor lower electric signal fed back by the motor controller, disconnecting the main relay and the pre-charging relay, sending a discharging command to the motor, and controlling the motor to discharge.
4. The method of claim 2, wherein said sending a high voltage disable enable command to control said main negative relay to open comprises:
sending the high voltage disable enable command to each of the high voltage assembly devices;
and receiving the high-voltage power-off electric signals fed back by the high-voltage assembly devices, monitoring that the bus current of the power battery is smaller than a preset current value, and sending a disconnection command when the high-voltage assembly devices are in a non-working state so as to control the main and negative relays to be disconnected through the disconnection command.
5. The method of claim 1, further comprising, after controlling the discharge device to stop discharging:
and opening the relay in each high-voltage loop.
6. The method of any of claims 1-4, further comprising:
and when the occurrence of device faults in the high-voltage system of the vehicle is monitored, the relays in the high-voltage loops are disconnected.
7. The method of any of claims 1-4, further comprising:
and when the power-on trigger signal is received and all devices in the vehicle high-voltage system meet the power-on condition, controlling the current discharge device in the vehicle high-voltage system to stop discharging and enter a high-voltage power-on process.
8. A discharge control apparatus for a high voltage system, comprising:
the discharging control module is used for sending an enabling command to the discharging device to control the discharging device to discharge when receiving a disconnection signal of the main and negative relays;
and the discharge stopping module is used for sending a discharge forbidding enabling command to the discharge device after setting time delay and controlling the discharge device to stop discharging when the bus voltage and the current of each high-voltage assembly device meet the set safety conditions and the bus voltage difference value between the bus voltage of each high-voltage assembly device and the bus voltage of the power battery is smaller than a preset voltage value.
9. A vehicle, characterized in that the vehicle comprises:
a high voltage system for vehicle power supply;
one or more controllers;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more controllers, the one or more controllers are caused to implement a discharge control method for a high voltage system as recited in any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a discharge control method for a high-voltage system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265041.2A CN111146833B (en) | 2019-12-11 | 2019-12-11 | Discharge control method and device for high-voltage system, vehicle and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265041.2A CN111146833B (en) | 2019-12-11 | 2019-12-11 | Discharge control method and device for high-voltage system, vehicle and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111146833A true CN111146833A (en) | 2020-05-12 |
| CN111146833B CN111146833B (en) | 2021-12-17 |
Family
ID=70517992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911265041.2A Active CN111146833B (en) | 2019-12-11 | 2019-12-11 | Discharge control method and device for high-voltage system, vehicle and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111146833B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659902A (en) * | 2020-12-31 | 2021-04-16 | 镇江海姆霍兹传热传动系统有限公司 | Electric vehicle and lower electric system thereof |
| CN113879124A (en) * | 2021-08-30 | 2022-01-04 | 珠海格力电器股份有限公司 | Power-off control method, system, vehicle and storage medium |
| CN114750644A (en) * | 2022-04-13 | 2022-07-15 | 北京新能源汽车股份有限公司 | Vehicle remote discharge control method, device and system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1055934A1 (en) * | 1999-05-26 | 2000-11-29 | Yazaki Corporation | Battery remaining capacity measuring apparatus suitable for hybrid car |
| CN202827406U (en) * | 2012-09-21 | 2013-03-27 | 金龙联合汽车工业（苏州）有限公司 | High-pressure discharge system used for hybrid power automobile |
| CN103490484A (en) * | 2013-10-24 | 2014-01-01 | 肖国选 | Fuzzy controller for charger for electric vehicle |
| CN104691349A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Discharging device for residual electricity of high-voltage component of electric automobile |
| CN106427582A (en) * | 2016-10-27 | 2017-02-22 | 奇瑞汽车股份有限公司 | Busbar voltage release method for electric drive system of electric automobile |
| CN106515459A (en) * | 2016-12-15 | 2017-03-22 | 简式国际汽车设计（北京）有限公司 | Active discharging method of double-motor controller of battery electric vehicle |
| CN106926706A (en) * | 2017-04-25 | 2017-07-07 | 东南（福建）汽车工业有限公司 | A kind of method of electric automobile motor system active discharge |
| CN108001229A (en) * | 2017-12-08 | 2018-05-08 | 东风柳州汽车有限公司 | Motor in electric automobile active discharge circuit |
| CN108016298A (en) * | 2017-10-24 | 2018-05-11 | 浙江吉利汽车研究院有限公司 | A kind of control method and control system for vehicle high-voltage system discharge |
| CN108248390A (en) * | 2018-01-15 | 2018-07-06 | 浙江吉利汽车研究院有限公司 | A kind of high-tension battery discharge circuit and its control method |
| CN109484182A (en) * | 2018-11-12 | 2019-03-19 | 安徽鑫盛汽车制造有限公司 | Electric control method under a kind of electric automobile high-voltage |
| CN109995306A (en) * | 2017-12-29 | 2019-07-09 | 郑州宇通客车股份有限公司 | A kind of electric machine controller discharge control method and device |
-
2019
- 2019-12-11 CN CN201911265041.2A patent/CN111146833B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1055934A1 (en) * | 1999-05-26 | 2000-11-29 | Yazaki Corporation | Battery remaining capacity measuring apparatus suitable for hybrid car |
| CN202827406U (en) * | 2012-09-21 | 2013-03-27 | 金龙联合汽车工业（苏州）有限公司 | High-pressure discharge system used for hybrid power automobile |
| CN103490484A (en) * | 2013-10-24 | 2014-01-01 | 肖国选 | Fuzzy controller for charger for electric vehicle |
| CN104691349A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Discharging device for residual electricity of high-voltage component of electric automobile |
| CN106427582A (en) * | 2016-10-27 | 2017-02-22 | 奇瑞汽车股份有限公司 | Busbar voltage release method for electric drive system of electric automobile |
| CN106515459A (en) * | 2016-12-15 | 2017-03-22 | 简式国际汽车设计（北京）有限公司 | Active discharging method of double-motor controller of battery electric vehicle |
| CN106926706A (en) * | 2017-04-25 | 2017-07-07 | 东南（福建）汽车工业有限公司 | A kind of method of electric automobile motor system active discharge |
| CN108016298A (en) * | 2017-10-24 | 2018-05-11 | 浙江吉利汽车研究院有限公司 | A kind of control method and control system for vehicle high-voltage system discharge |
| CN108001229A (en) * | 2017-12-08 | 2018-05-08 | 东风柳州汽车有限公司 | Motor in electric automobile active discharge circuit |
| CN109995306A (en) * | 2017-12-29 | 2019-07-09 | 郑州宇通客车股份有限公司 | A kind of electric machine controller discharge control method and device |
| CN108248390A (en) * | 2018-01-15 | 2018-07-06 | 浙江吉利汽车研究院有限公司 | A kind of high-tension battery discharge circuit and its control method |
| CN109484182A (en) * | 2018-11-12 | 2019-03-19 | 安徽鑫盛汽车制造有限公司 | Electric control method under a kind of electric automobile high-voltage |
Non-Patent Citations (1)
| Title |
|---|
| 杨国亮，齐同启等: "纯电动汽车高压电气系统安全设计", 《汽车工程师》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659902A (en) * | 2020-12-31 | 2021-04-16 | 镇江海姆霍兹传热传动系统有限公司 | Electric vehicle and lower electric system thereof |
| CN113879124A (en) * | 2021-08-30 | 2022-01-04 | 珠海格力电器股份有限公司 | Power-off control method, system, vehicle and storage medium |
| CN113879124B (en) * | 2021-08-30 | 2023-11-14 | 珠海格力电器股份有限公司 | Power-off control method, system, vehicle and storage medium |
| CN114750644A (en) * | 2022-04-13 | 2022-07-15 | 北京新能源汽车股份有限公司 | Vehicle remote discharge control method, device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111146833B (en) | 2021-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111146833B (en) | Discharge control method and device for high-voltage system, vehicle and storage medium | |
| CN109421542B (en) | High-voltage power-down method for electric automobile | |
| EP3744553A1 (en) | Control system and method for discharge control of electric vehicle | |
| CN107697003B (en) | Vehicle electrical system | |
| JP3568722B2 (en) | Overcurrent cutoff circuit | |
| CN103754115A (en) | System and method for managing timing sequences of high-low voltage power-on and power-off of plug-in hybrid electric vehicles | |
| CN111208395A (en) | Vehicle insulation state detection method and device, vehicle and storage medium | |
| CN105966199A (en) | New energy automobile PTC heating control system and method | |
| CN104467061A (en) | Power control system and method for vehicle power outlets | |
| CN111086415B (en) | Battery charging management method, device, vehicle and storage medium | |
| CN109484186A (en) | Electric car active charging method and device | |
| US20180037132A1 (en) | Secondary lithium battery for vehicle use | |
| CN111038264B (en) | Delayed power-off control system and control method for vehicle | |
| EP3059831A1 (en) | Secondary lithium battery for vehicle use | |
| CN112003362B (en) | Control method of power supply system and related device | |
| CN109318714B (en) | Power-on and power-off control method for high-voltage power distribution system of electric automobile | |
| CN106004452B (en) | A kind of lower electric installation of vehicle delay | |
| CN114248626A (en) | Vehicle high-voltage discharge control method and device and vehicle | |
| CN112009253A (en) | High-voltage safety control method and system for electric commercial vehicle | |
| KR100471250B1 (en) | Cooling fan controlling device of electric vehicle and method thereof | |
| CN111251891B (en) | Vehicle high-voltage loop control method, vehicle and storage medium | |
| CN108944746A (en) | A kind of mobile unit and automobile | |
| JPH1141787A (en) | Overcurrent interrupting circuit | |
| CN212386323U (en) | Electric automobile power-on device | |
| CN106817052B (en) | Integrated module of starter current limiter and circuit breaker and automobile starting system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |