CN114851878A - Hybrid electric vehicle, and discharge control method, control device and storage medium thereof - Google Patents

Hybrid electric vehicle, and discharge control method, control device and storage medium thereof Download PDF

Info

Publication number
CN114851878A
CN114851878A CN202210637313.2A CN202210637313A CN114851878A CN 114851878 A CN114851878 A CN 114851878A CN 202210637313 A CN202210637313 A CN 202210637313A CN 114851878 A CN114851878 A CN 114851878A
Authority
CN
China
Prior art keywords
vehicle
discharge
power
discharging
battery
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.)
Pending
Application number
CN202210637313.2A
Other languages
Chinese (zh)
Inventor
尹建坤
马艳红
宋浩源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Group Corp
Original Assignee
FAW Group Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FAW Group Corp filed Critical FAW Group Corp
Priority to CN202210637313.2A priority Critical patent/CN114851878A/en
Publication of CN114851878A publication Critical patent/CN114851878A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • 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

Abstract

The invention discloses a hybrid electric vehicle, a discharge control method and a discharge control device thereof, and a storage medium. The control method comprises the steps that when the vehicle-mounted charger is in a high-voltage discharge state, current electric quantity information of a power battery and a fuel battery is obtained; determining a discharge mode of the hybrid electric vehicle according to current electric quantity information of the power battery and the fuel battery; the discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through a discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun. The invention can adopt the fuel cell to discharge to the outside, has improved the ability that the system discharges to the outside.

Description

Hybrid electric vehicle, and discharge control method, control device and storage medium thereof
Technical Field
The invention relates to the technical field of automobile control methods, in particular to a hybrid electric vehicle, a discharge control method, a discharge control device and a storage medium thereof.
Background
With the popularization of hybrid electric vehicles, more and more users select the hybrid electric vehicles as transportation tools. Under some emergency situations, if the hybrid electric vehicle can realize external discharge, great convenience is brought to the life of people. For example, in a field trip, the hybrid electric vehicle can be used as a power supply, so that a user can use an induction cooker, a computer and the like in the trip; in addition, when the electric quantity of other hybrid electric vehicles is not enough to enable the hybrid electric vehicles to drive to the nearest charging pile, the fact that the vehicles can be charged mutually is a good choice.
However, in the prior art, the hybrid electric vehicle can only discharge to the outside by using the power battery, and the power battery only discharges to the outside by using the power battery because the electric quantity stored by the power battery is limited, so that the power consumption requirement of a user cannot be met, and better user experience cannot be achieved.
Disclosure of Invention
The invention provides a hybrid electric vehicle, a discharge control method, a discharge control device and a storage medium of the hybrid electric vehicle, which are used for overcoming the defects in the prior art, improving the external discharge capacity of the hybrid electric vehicle and bringing better experience to users.
In a first aspect, the present invention provides a discharge control method for a hybrid vehicle, the hybrid vehicle including a charge-discharge system; the charging and discharging system at least comprises a vehicle-mounted charger, a power battery, a fuel cell and a DC/DC converter, a charging port of the vehicle-mounted charger is connected with a charging gun or a discharging gun in a pluggable manner, and the discharging control method of the hybrid electric vehicle comprises the following steps:
when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of a power battery and current electric quantity information of the fuel battery;
determining a discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery; the discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, the discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun.
In a second aspect, the present invention provides a discharge control apparatus for a hybrid vehicle, the hybrid vehicle including a charge-discharge system; the charging and discharging system at least comprises a vehicle-mounted charger, a power battery, a fuel cell and a DC/DC converter, a charging port of the vehicle-mounted charger is connected with a charging gun or a discharging gun in a pluggable manner, and the discharging control device of the hybrid electric vehicle comprises:
the information acquisition module is used for acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery when the vehicle-mounted charger is in a high-voltage discharge state;
the mode determining module is used for determining a discharging mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery; the discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, the discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun.
In a third aspect, the present invention provides a computer-readable storage medium storing computer instructions for causing a processor to implement a discharge control method for a hybrid vehicle according to any one of the present invention when executed.
In a fourth aspect, the present invention also provides a hybrid vehicle, including: a charging and discharging system and a control system;
the charging and discharging system at least comprises a vehicle-mounted charger, a power battery, a fuel battery and a DC/DC converter, wherein a charging port of the vehicle-mounted charger is connected with a charging gun or a discharging gun in a pluggable manner;
the control system is configured to execute a discharge control method of a hybrid vehicle according to any one of the invention.
The technical scheme of the invention determines the discharge mode of the hybrid electric vehicle by acquiring the current electric quantity information of the power battery and the current electric quantity information of the fuel battery when the vehicle-mounted charger is in a high-voltage discharge state, namely when the discharge mode of the hybrid electric vehicle is a battery discharge mode, the power battery is adopted to supply power to the vehicle-mounted charger and control the vehicle-mounted charger to supply power to an external load through a discharge gun, when the discharge mode of the hybrid electric vehicle is a charge discharge mode, the discharge electric energy of the fuel battery is converted through a DC/DC converter and then is supplied to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to the external load through the discharge gun, so that different discharge modes can be realized based on the current electric quantity information of the power battery and the current electric quantity information of the fuel battery, and the discharge requirements of different working conditions are met, compared with the condition that only the power battery is used for discharging outwards, the capacity of the hybrid electric vehicle for discharging outwards can be improved, and the safety and the stability of the operation of the hybrid electric vehicle are improved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram illustrating a charging and discharging system of a hybrid vehicle according to an embodiment of the present invention;
fig. 2 is a block diagram showing a control system in a hybrid vehicle according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a discharge control method for a hybrid vehicle according to a second embodiment of the present invention;
fig. 4 is a flowchart of a discharge control method of a hybrid vehicle according to a third embodiment of the invention;
fig. 5 is a flowchart of a discharge control method of a hybrid vehicle according to a fourth embodiment of the present invention;
fig. 6 is a flowchart of a discharge control method of a hybrid vehicle according to a fifth embodiment of the present invention;
fig. 7 is a flowchart of a discharge control method of a hybrid vehicle according to a sixth embodiment of the present invention;
fig. 8 is a flowchart of a discharge control method of a hybrid vehicle according to a seventh embodiment of the invention;
fig. 9 is a flowchart of a discharge control method of a hybrid vehicle according to an eighth embodiment of the present invention;
fig. 10 is a flowchart of a discharge control method of a hybrid vehicle according to a ninth embodiment of the present invention;
fig. 11 shows a control device for a hybrid vehicle according to a tenth embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
An embodiment of the present invention provides a hybrid electric vehicle, where the hybrid electric vehicle includes, but is not limited to, a charging and discharging system and a control system, fig. 1 is a block diagram of a charging and discharging system in the hybrid electric vehicle according to the embodiment of the present invention, and fig. 2 is a block diagram of a control system in the hybrid electric vehicle according to the embodiment of the present invention. Referring to fig. 1 and fig. 2, the charging and discharging system in the hybrid electric vehicle mainly includes a vehicle-mounted charger 101, a power battery 102, a fuel cell 103, and a DC/DC converter 104, wherein a charging port of the vehicle-mounted charger 101 is connected to a charging gun or a discharging gun in a pluggable manner. The power battery 102 can charge the vehicle-mounted charger 101 and other high-voltage loads in the hybrid electric vehicle; the fuel cell 103 can provide discharging power to the vehicle-mounted charger 101 through the DC/DC converter 104, and/or provide charging power to the power cell 102 through the DC/DC converter 104.
In addition, as shown in fig. 1, the charging and discharging system in the hybrid vehicle may further include another high-voltage load 105, a power motor 106, a pre-charge relay 107, a main positive relay 108, a main negative relay 109, and the like. The charging port of the vehicle-mounted charger 101 is connected with the charging gun or the discharging gun in a pluggable manner, and when the charging port is connected with the discharging gun, the charging port can be connected with external charging equipment to realize external discharging, for example, the charging port can be connected with electric appliances such as an induction cooker and a lighting lamp, can also be connected with a power strip to simultaneously supply power to a plurality of devices, and can also be connected with other hybrid electric vehicles to charge the devices. The positive pole of the power battery 102 is connected with the pre-charging relay 107, and is used for switching on the pre-charging circuit for self-checking before the main relay 108 works, so that the damage to other electronic elements in a high-voltage system due to large current at the moment of power-on can be effectively prevented; the positive pole of the power battery 102 is also connected with a vehicle-mounted charger 101 and other high-voltage loads 105 through a main positive relay 108, so that the power battery 102 is powered by the electric energy provided by the power battery; the fuel cell stack 103 is connected with a main negative relay 109 through a DC/DC converter 104 and further connected with the negative electrode of the power cell 102, so that the power cell 102 can be charged by the electric energy provided by the fuel cell stack 103; the fuel cell pile 103 is also connected with the vehicle-mounted charger 101 through the DC/DC converter 104, and the discharging electric energy of the fuel cell pile 103 is converted through the DC/DC converter 104 and then is supplied to the vehicle-mounted charger 101, so that the outward discharging is realized. The discharge gun may be provided with a temperature sensor. The operation mode of the charge and discharge system of the hybrid electric vehicle is controlled by the control system of the hybrid electric vehicle.
Optionally, the control system of the hybrid electric vehicle may be integrated with the control device of the hybrid electric vehicle provided in the embodiment of the present invention, and may execute the control method of the hybrid electric vehicle provided in the embodiment of the present invention. As shown in fig. 2, the control system of the hybrid electric vehicle includes, but is not limited to, a wireless gateway 11, an in-vehicle entertainment information display 12, an in-vehicle charger 101, a battery management system 14, a DC/DC converter 104, other high voltage accessory controllers 16, a hybrid control unit 17, a fuel cell stack controller 18, a motor control unit 19, an electronic shift control unit 20, and a gateway 21; the wireless gateway 11 CAN be in communication connection with the vehicle-mounted entertainment information display unit 12 through a corresponding CAN network, and the wireless gateway 11 CAN also be in communication with devices, systems and units connected in other CAN networks through a gateway 21; the vehicle-mounted charger 101, the battery management system 14, the DC/DC converter 104 and the other high-voltage accessory controllers 16 CAN communicate with each other through corresponding CAN networks; the hybrid control unit 17, the fuel cell stack controller 18, the motor control unit 19 and the electronic shift control unit 20 CAN communicate with each other through corresponding CAN networks; different CAN networks CAN communicate with each other through the gateway 21; in addition, the wireless gateway 11 may also be in communication connection with the user terminal 22 through a network, so that the power information of the fuel cell and the power information of the power cell are displayed on the user terminal 22, and the user can conveniently check the power information at any time when needed.
Since the hybrid electric vehicle provided by the embodiment of the present invention includes the control system and the charge and discharge system, and the control system can be integrated with the control device of the hybrid electric vehicle provided by the embodiment of the present invention, and can execute the control method of the hybrid electric vehicle provided by the embodiment of the present invention, the control device of the hybrid electric vehicle provided by the embodiment of the present invention can have the corresponding structure and characteristics for executing the control method of the hybrid electric vehicle provided by the embodiment of the present invention, and can achieve the beneficial effects of the control method of the hybrid electric vehicle provided by the embodiment of the present invention, and the same points can be described with reference to the following description.
Example two
The embodiment of the invention provides a discharge control method of a hybrid electric vehicle, which can be used for controlling an external discharge mode of the hybrid electric vehicle. Fig. 3 is a flowchart of a discharge control method of a hybrid electric vehicle according to an embodiment of the present invention. The discharge control method of the hybrid electric vehicle specifically comprises the following steps:
s101, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
The high-voltage discharging state refers to a non-driving power-on state of the hybrid electric vehicle, at the moment, a charging port of the vehicle-mounted charger is connected with a discharging gun, and the discharging gun can be used as a socket to be electrically connected with a plug of external electric equipment, so that the vehicle-mounted charger can discharge outwards through the discharging gun. The current charge information of the power battery may include, but is not limited to, the current remaining charge of the power battery and the current discharge power of the power battery; the current charge information of the fuel cell includes, but is not limited to, the current amount of hydrogen in the fuel cell. The current electric quantity information of the power battery, the current electric quantity information of the fuel battery and other content users can be checked through the wireless gateway. In the process of discharging the hybrid electric vehicle, the current electric quantity information of the power battery and the current electric quantity information of the fuel battery are acquired, so that a user can clearly know the current electric quantity state of the hybrid electric vehicle and take measures in time, and the current electric quantity of the hybrid electric vehicle cannot meet the return requirement of the remaining driving mileage or the power utilization requirement of external power utilization equipment during discharging is prevented.
And S102, determining the discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery.
The discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through a discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun.
For safety, in the battery discharge mode, the hybrid electric vehicle keeps a non-driving power-on state, and simultaneously sends a command of forbidding to exit from the P gear to the electronic gear shift control unit, and the hybrid electric vehicle is in a parking state; the driving motor should be in a non-driving state; the high-voltage requirements such as braking, starting by pressing a key and the like when a driver drives are not responded; the discharging gun is in a locking state, so that the discharging gun and the vehicle-mounted charger cannot be disconnected in the process of discharging outwards of the hybrid electric vehicle; the fuel cell and the DC/DC converter are in a non-enabled state, and the fuel cell does not provide electric energy to the outside through the DC/DC converter. In the charge-discharge mode: the hybrid electric vehicle keeps a non-driving power-on state, and simultaneously sends an instruction for forbidding to exit from the P gear to the electronic gear-shifting control unit, and the hybrid electric vehicle is in a parking state; the driving motor should be in a non-driving state; the high-voltage requirements such as braking, starting by pressing a key and the like when a driver drives are not responded; the discharging gun is in a locking state, so that the discharging gun and the vehicle-mounted charger cannot be disconnected in the process of discharging outwards of the hybrid electric vehicle; the electric energy generated by the fuel cell provides electric energy for a vehicle-mounted charger and/or a power battery through a DC/DC converter, at the moment, the power demand of the fuel cell is phi iacc/EFFdcdc + Pfacc, wherein the EFFdcdc is the efficiency of the DC/DC converter; pfacc is the power consumed by the fuel cell stack accessories; the philaccc mainly comprises a DC/DC converter consumption Pdcdc, a discharge gun consumption Poutlet, a power battery charging power Pbatchrg and other high-voltage accessory power consumption Pother, i.e., philaccc + Poutlet + Pbatchrg + fac + Pother.
Specifically, in the charging and discharging mode, the discharging electric energy of the fuel cell can be converted by the DC/DC converter and then provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun; or the power battery is supplied with the converted power battery for charging through the DC/DC converter; the discharge electric energy of the fuel cell can be converted by the DC/DC converter and then is simultaneously supplied to the vehicle-mounted charger and the power battery.
For example, when a user has a meal in the field and needs the hybrid electric vehicle to supply power to the barbecue grill or the mobile phone, the user can firstly connect the power strip with the discharge gun and then connect the discharge gun with the vehicle-mounted charger. The vehicle control unit of the hybrid electric vehicle controls the hybrid electric vehicle to enter a battery discharge mode or a charge-discharge mode according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery, so as to supply power for external electric equipment.
According to the embodiment of the invention, the current electric quantity information of the power battery and the current electric quantity information of the fuel battery of the vehicle-mounted charger in the high-voltage discharge state are obtained, and the discharge mode of the hybrid electric vehicle is determined to be the battery discharge mode or the charge-discharge mode. Meanwhile, when the hybrid electric vehicle is in a high-voltage discharge state, the discharge mode of the hybrid electric vehicle is determined based on the current electric quantity information of the power battery and the current electric quantity information of the fuel battery, so that the safety and the stability of the external discharge of the hybrid electric vehicle are ensured.
EXAMPLE III
Fig. 4 is a flowchart of a discharge control method of a hybrid electric vehicle according to a third embodiment of the present invention. The embodiment adds the limitation of the conditions for entering the battery discharging mode and the charging and discharging mode of the hybrid electric vehicle on the basis of the first embodiment, and as shown in fig. 4, the method specifically includes:
s201, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
S202, judging whether the current electric quantity information of the power battery meets a first preset electric quantity condition or not; if yes, go to S203; if not, go to S204.
The current electric quantity information comprises the current residual electric quantity of the power battery and the current discharging power of the power battery; the first preset electric quantity condition comprises that the current residual electric quantity of the power battery is larger than the first preset residual electric quantity and the current discharging power of the power battery is larger than the first preset discharging power. The first preset remaining power may be a minimum remaining power at which the power battery can normally output electric energy, or the first preset power may be a sum of a minimum remaining power corresponding to the power battery can normally output electric energy and a consumed power at which the battery management system sends a corresponding signal; the first preset discharge power is the minimum output power which can be output by the power battery.
Specifically, a first preset electric quantity condition can be set through the user terminal APP, and the user terminal can be a mobile phone, a portable computer and the like. The method comprises the steps that whether the current electric quantity information of a power battery meets a first preset condition or not is judged by setting a first preset electric quantity condition, so that when the residual electric quantity of the power battery is insufficient or the discharge power of the power battery is small, measures are taken in time, the power battery is prevented from being discharged outwards under the condition that the current electric quantity information does not meet the working requirement, and the power battery can be protected; meanwhile, the requirement of the return trip travel mileage of the user is met by setting a first preset condition, so that the situation that the power battery consumes too low electric quantity and cannot meet the return trip requirement is avoided.
And S203, controlling the hybrid electric vehicle to enter a battery discharging mode.
For example, when a user has an outdoor power demand, the user may connect the power consumption device with the discharge gun, and then connect the discharge gun with the vehicle-mounted charger. If the current residual capacity of the power battery is larger than the first preset residual capacity and the current discharge power of the power battery is larger than the first preset power, the hybrid electric vehicle can be controlled to enter a battery discharge mode, so that the discharge electric energy of the power battery is provided to a vehicle-mounted charger to supply power to electric equipment.
S204, judging whether the current electric quantity information of the fuel cell meets a second preset electric quantity condition; if yes, go to S205.
Wherein the current charge information of the fuel cell includes a current amount of hydrogen in the fuel cell; the current hydrogen amount in the fuel cell is the residual hydrogen amount in the gas storage tank of the current fuel cell; the second preset electric quantity condition comprises that the current hydrogen quantity is larger than the first preset hydrogen quantity. The first preset hydrogen amount can also be set through the user terminal, and can be the lowest available hydrogen amount set by the user; when the residual hydrogen amount in the gas storage tank of the fuel cell is larger than the first preset hydrogen amount, the return requirement of a user can be met. Therefore, whether the current electric quantity information of the fuel cell meets the second preset electric quantity condition is judged by setting the first preset hydrogen quantity, so that when the current hydrogen quantity of the hybrid electric vehicle in the fuel cell is smaller, measures are taken in time, the fuel cell is prevented from discharging outwards when the current hydrogen quantity is smaller, the hybrid electric vehicle cannot meet the requirement of the remaining driving mileage or cannot be started normally, and inconvenience is brought to the trip of a user.
And S205, controlling the hybrid electric vehicle to enter a charging and discharging mode.
For example, when a user has a power demand in the field, the user may connect the power consumption equipment with the discharge gun, and then connect the discharge gun with the vehicle-mounted charger. If the current electric quantity information of the power battery does not meet the first preset electric quantity condition, but the residual hydrogen quantity in the gas storage tank of the fuel battery is larger than the first preset electric quantity, the hybrid electric vehicle enters a charging and discharging mode, and the electric energy provided by the fuel battery supplies power for the electric equipment.
In this embodiment, when the current electric quantity information of power battery satisfies the preset condition, hybrid vehicle gets into the battery discharge mode, when the current electric quantity information of power battery does not satisfy the preset condition, further judge whether the current electric quantity information of fuel cell satisfies the preset condition, if the current electric quantity information of fuel cell satisfies the preset condition, then hybrid vehicle gets into the charge discharge mode, thereby under the prerequisite that satisfies the power consumption demand of consumer, protect power battery and fuel cell, simultaneously, satisfy user's the demand of traveling.
Example four
Fig. 5 is a flowchart of a discharge control method of a hybrid electric vehicle according to a fourth embodiment of the present invention. The embodiment further adds technical features of conditions for switching between the battery discharging mode and the charging and discharging mode on the basis of the above embodiment, and as shown in fig. 5, the method specifically includes:
s301, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
S302, judging whether the current electric quantity information of the power battery meets a first preset electric quantity condition; if yes, executing S303; if not, go to S306.
And S303, controlling the hybrid electric vehicle to enter a battery discharging mode.
And S304, when the hybrid electric vehicle is in a battery discharge mode, acquiring the residual electric quantity and the discharge power of the power battery in real time.
S305, judging whether the residual capacity of the power battery is less than or equal to a second preset residual capacity or not, or whether the discharge power of the power battery is less than or equal to a second preset discharge power or not; if yes, go to S306.
The second preset electric quantity can be equal to or smaller than the first preset electric quantity; the second preset discharge power may be equal to or less than the first preset discharge power.
Specifically, when the hybrid electric vehicle is in the battery discharge mode, the power battery is continuously discharged, so that the electric quantity in the power battery is continuously consumed. Through setting up the second and predetermine residual capacity and the second and predetermine discharge power, in the power battery continuous discharge process, if the residual capacity of power battery reaches the second and predetermine residual capacity, perhaps the discharge power of power battery reaches the second and predetermine discharge power, then can confirm that power battery no longer satisfies the demand of external discharge, can in time take measures this moment, prevent that the electric quantity of power battery from excessively consuming, influence power battery's life-span. The method comprises the following steps of taking measures including but not limited to controlling a vehicle-mounted charger to be in a high-voltage low-voltage state, or switching a discharging mode of the hybrid electric vehicle from a battery discharging mode to a charging and discharging mode; before the discharging mode of the hybrid electric vehicle is switched to the charging and discharging mode from the battery discharging mode, whether the current electric quantity information of the fuel cell meets a second preset electric quantity condition or not needs to be judged so as to avoid that the current electric quantity information of the fuel cell does not meet the second preset electric quantity condition and subsequent use requirements of a user are influenced and/or irreversible loss is caused on the fuel cell.
S306, judging whether the current electric quantity information of the fuel cell meets a second preset electric quantity condition; if yes, go to step S307.
And S307, controlling the hybrid electric vehicle to enter a charging and discharging mode.
And S308, acquiring the residual electric quantity and the discharge power of the power battery in real time when the hybrid electric vehicle is in a charging and discharging mode.
When the hybrid electric vehicle is in a charging and discharging mode, discharging electric energy of the fuel cell is converted by the DC/DC converter and then is transmitted to the vehicle-mounted charger, and redundant power can be used for charging the power cell.
S309, judging whether the residual capacity of the power battery is larger than a third preset residual capacity and whether the discharge power is larger than a preset discharge power; if yes, go to S303.
The third preset remaining capacity may be greater than the first preset remaining capacity, and for example, the third preset remaining capacity may be equal to a nearly full capacity of the power battery.
Illustratively, when a user has an electricity demand, if the current electricity information of the power battery meets a first preset electricity condition, the hybrid electric vehicle is controlled to enter a battery discharge mode, and in the battery discharge mode, the electricity of the power battery is monitored in real time, and when the electricity of the power battery cannot meet the discharge demand, that is, the current remaining electricity of the power battery is less than or equal to a second preset remaining electricity, or the current discharge power of the power battery is less than or equal to a second preset discharge power, whether the amount of hydrogen stored in an air storage tank of the fuel battery is greater than the first preset amount of hydrogen is determined; when the hydrogen quantity stored in a gas storage tank of the fuel cell is larger than a first preset hydrogen quantity, switching the discharge mode of the hybrid electric vehicle from a battery discharge mode to a charge discharge mode, wherein in the charge discharge mode, the electric energy generated by the fuel cell can be used for charging the power cell besides meeting the power demand of electric equipment; by monitoring the electric quantity information of the power battery in real time in the charging and discharging mode, when the residual electric quantity of the power battery reaches a third preset residual electric quantity, the charging and discharging mode can be switched to the charging and discharging mode again, so that the aim of saving fuel is fulfilled; meanwhile, under the charging and discharging mode, the electric quantity information of the fuel cell can be monitored in real time, when the hydrogen quantity stored in the gas storage tank of the fuel cell is reduced to be below a first preset hydrogen quantity, if the current electric quantity of the power cell can meet the power consumption requirement of the electric equipment, the charging and discharging mode can be switched to the charging and discharging mode again, and if the current electric quantity of the power cell can not meet the power consumption requirement of the electric equipment, the vehicle-mounted charger can be controlled to power off.
According to the embodiment of the invention, the switching condition of the battery discharging mode and the charging and discharging mode is set, so that the battery discharging mode and the charging and discharging mode can be switched mutually, and on the premise of protecting the power battery and prolonging the service life of the power battery, fuel can be saved, and the purposes of economy and practicability are achieved.
EXAMPLE five
Fig. 6 is a flowchart of a discharge control method of a hybrid electric vehicle according to a fifth embodiment of the present invention. This embodiment further adds a condition for performing alarm processing, entering a battery discharge mode, or entering a high-voltage low-voltage state when the amount of hydrogen is less than or equal to the first preset amount of hydrogen, to the above-described embodiment. As shown in fig. 6, the method specifically includes:
s401, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
S402, judging whether the current electric quantity information of the power battery meets a first preset electric quantity condition; if yes, executing S403; if not, go to S404.
And S403, controlling the hybrid electric vehicle to enter a battery discharging mode.
S404, judging whether the current electric quantity information of the fuel cell meets a second preset electric quantity condition; if yes, go to S405; if not, S406 and S407 are sequentially executed.
And S405, controlling the hybrid electric vehicle to enter a charging and discharging mode.
S406, alarm reminding is carried out.
For example, when a user has a power demand in the field, the user may connect the power consumption equipment with the discharge gun, and then connect the discharge gun with the vehicle-mounted charger. If the current electric quantity information of the power battery does not meet a first preset electric quantity condition and the current hydrogen quantity in the fuel battery is smaller than a first preset electric quantity, alarming and reminding are carried out, wherein the alarming and reminding modes include but are not limited to vehicle buzzing, prompt tone sent by a user terminal and the like; if the electric quantity information of the current power battery does not meet the first preset electric quantity condition, but the current hydrogen quantity in the fuel battery is larger than the first preset electric quantity, the hybrid electric vehicle enters a charging and discharging mode, and the electric energy provided by the fuel battery supplies power for the electric equipment; when the residual hydrogen amount of the fuel cell is consumed to the lowest hydrogen amount set by the user, the hybrid electric vehicle can give an alarm to remind the user that the current residual hydrogen amount is insufficient and prompt the user to arrange a subsequent stroke in time.
S407, judging whether the residual capacity of the power battery is greater than a fourth preset residual capacity; if yes, executing S403; if not, go to step S408.
And S408, controlling the vehicle-mounted charger to enter a high-voltage low-voltage state.
When the remaining hydrogen amount in the fuel cell is the lowest hydrogen usage amount set by the user, the fourth preset remaining power may be the minimum remaining power of the power cell discharged to the outside, and is smaller than the first preset power. Through setting up the fourth and predetermine the residual capacity, make hybrid vehicle when fuel cell residual hydrogen volume is less and power battery still can externally discharge, can continue to use the electric energy that power battery provided to supply power externally, further improved hybrid vehicle's external discharge capacity, satisfy user's outdoor power consumption demand.
Illustratively, when the residual hydrogen quantity of the fuel cell is consumed to the minimum hydrogen quantity set by the user, the hybrid electric vehicle alarms to remind the user that the current residual hydrogen quantity is insufficient, and meanwhile, if the residual electric quantity of the power cell is larger than a fourth preset electric quantity, the hybrid electric vehicle enters a battery discharge mode, the power cell provides electric energy, the power cell continues to discharge outwards, and the power consumption requirement of the user is met; otherwise, the vehicle-mounted charger enters a high-voltage low-voltage state, and the hybrid electric vehicle stops supplying power to the electric equipment so as to meet the return demand of the user.
In this embodiment, when the remaining hydrogen amount of the fuel cell is consumed to the minimum hydrogen amount set by the user, the hybrid electric vehicle may alarm to remind the user that the current remaining hydrogen amount is insufficient, so that the user can know that the externally discharged electric energy currently provided by the hybrid electric vehicle is less, and prompt the user to schedule a subsequent trip in time. Meanwhile, if the residual electric quantity of the power battery is greater than the fourth preset electric quantity, the hybrid electric vehicle enters the battery discharge mode again and continues to discharge outwards, so that the external discharge capacity of the hybrid electric vehicle is improved, and the power consumption requirement of a user is met; otherwise, the vehicle-mounted charger enters a high-voltage low-voltage state, and the hybrid electric vehicle stops supplying power for the external power utilization equipment, so that the return requirement of a user is met, and the vehicle-mounted charger has the advantages of safety and stability.
EXAMPLE six
Fig. 7 is a flowchart of a discharge control method of a hybrid electric vehicle according to a sixth embodiment of the present invention. In this embodiment, on the basis of the first embodiment, a method for determining whether the high-voltage discharge condition is satisfied before the vehicle-mounted charger is in the high-voltage discharge state is added. As shown in fig. 7, the method specifically includes:
and S501, acquiring the state information of the charge-discharge system and the state information of the hybrid electric vehicle.
The state information of the charging and discharging system can comprise a power-on state of the discharging system, a connection state and a locking state of a vehicle-mounted charger and a discharging gun and temperature information of the discharging gun; the state information of the hybrid electric vehicle includes gear information and failure information of the hybrid electric vehicle. The fault information may include, but is not limited to, high voltage interlocks, and the like.
Specifically, the power-on state of the charge-discharge system may include a high-voltage discharge state and a high-voltage power-off state, when the charge-discharge system is in the high-voltage power-off state, the power battery and/or the fuel battery do not provide charging electric energy for the vehicle-mounted charger, and the vehicle-mounted charger cannot discharge externally; when the charging and discharging system is in a high-voltage discharging state, the power battery and/or the fuel battery can provide charging electric energy for the vehicle-mounted charger, and the vehicle-mounted charger can discharge outwards to provide electric energy for external electric equipment. The vehicle-mounted charger is connected with the discharging gun in a pluggable mode, when a user needs the hybrid electric vehicle to supply power to the external equipment, the discharging gun can be inserted into the vehicle-mounted charger, the discharging gun and the vehicle-mounted charger are locked through the locking device, so that the discharging gun and the vehicle-mounted charger cannot be disconnected in the external discharging process of the hybrid electric vehicle, and at the moment, the vehicle-mounted charger in a high-voltage discharging state can supply discharging electric energy to the outside; when the hybrid electric vehicle is not required to supply power to the external equipment, a user can unlock the discharging gun and the vehicle-mounted charger, the discharging gun is pulled out of the vehicle-mounted charger, and the vehicle-mounted charger does not provide electric energy to the external equipment through the discharging gun any more. The temperature sensor can be arranged in the discharging gun and used for monitoring the temperature of the discharging gun in real time, the vehicle-mounted charger inevitably generates heat in the process of discharging outwards through the discharging gun, and potential safety hazards exist when the temperature of the discharging gun is too high.
S502, judging whether a high-voltage discharge condition is met according to the state information of the charge-discharge system and the state information of the hybrid electric vehicle; if yes, go to S503.
The high-voltage discharging condition comprises that a discharging system is in a non-driving power-on state, a vehicle-mounted charger is completely connected with a discharging gun and locked, the temperature of the discharging gun is lower than a preset temperature, the gear of the hybrid electric vehicle is a P gear, and the hybrid electric vehicle has no high-voltage fault;
and S503, controlling the vehicle-mounted charger to enter a high-voltage discharge state.
For example, when a user has a demand for electricity, the charging port of the vehicle-mounted charger is connected with the discharging gun. The hybrid electric vehicle acquires the state information of the charge and discharge system and the state information of the hybrid electric vehicle, and judges whether the high-voltage discharge condition is met. If the high-voltage discharge condition is met, the fact that external discharge can be conducted safely and stably is indicated, the hybrid electric vehicle controls the vehicle-mounted charger to enter a high-voltage discharge state, and the hybrid electric vehicle starts to supply power for external electric equipment. The safety and stability of the external discharge of the hybrid electric vehicle are improved by setting the condition that the vehicle-mounted charger enters a high-voltage discharge state.
S504, when the vehicle-mounted charger is in a high-voltage discharge state, current electric quantity information of the power battery and current electric quantity information of the fuel battery are obtained.
And S505, determining the discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery.
According to the control method for the external discharge of the hybrid electric vehicle, before the vehicle-mounted charger is in the high-voltage discharge state, whether the high-voltage discharge condition is met is judged, so that the safety and the stability of the external discharge of the hybrid electric vehicle can be ensured.
EXAMPLE seven
Fig. 8 is a flowchart of a discharge control method of a hybrid electric vehicle according to a seventh embodiment of the present invention. This embodiment is further added to the above-described embodiment with a method of determining whether or not the state information of the charge-discharge system satisfies the high-voltage power-down condition after determining the discharge mode of the hybrid vehicle, as shown in fig. 8, the control method including:
s601, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
And S602, determining the discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery.
And S603, acquiring the state information of the charge and discharge system in real time.
The state information of the charge and discharge system comprises the connection state and the locking state of the vehicle-mounted charger and the discharge gun, the temperature information of the discharge gun, the electric quantity information of the fuel cell and the power cell, and the fault state of the charge and discharge system;
specifically, the fault state of the charge-discharge system includes, but is not limited to, the discharge capacity condition and the output power condition of the power battery and/or the fuel cell in the charge-discharge system, and the temperature state, the current state, the voltage state, the short circuit condition and the like of each element;
s604, judging whether the state information of the charge-discharge system meets the high-voltage power-off condition; if yes, go to S605. And S605, controlling the vehicle-mounted charger to enter a high-voltage low-voltage state.
Specifically, the high-voltage power-off condition includes, but is not limited to, at least one of an incomplete connection state between the vehicle-mounted charger and the discharge gun, an unlocked state between the vehicle-mounted charger and the discharge gun, a temperature of the discharge gun being higher than a preset temperature, a power information of the fuel cell in the charging and discharging mode not meeting a preset fuel cell power, a power information of the power cell in the battery discharging mode not meeting a preset power cell power, and a fault of the charging and discharging system. The faults of the charge and discharge system include, but are not limited to, the discharge capacity of the power battery and/or the fuel battery in the charge and discharge system is sufficient to control the vehicle-mounted charger to discharge to the outside, the output power of the power battery and/or the fuel battery meets the power requirement of a load (i.e., a charging device) connected to the power battery and/or the fuel battery, and the elements are free from over-temperature, over-current, short-circuit, under-voltage and the like. Therefore, when the state information of the charging and discharging system meets any one of the high-voltage power-down conditions, the vehicle-mounted charger is controlled to be charged at a high voltage, so that the hybrid electric vehicle stops discharging outwards, and the safety of the charging and discharging system of the hybrid electric vehicle is ensured.
According to the embodiment of the invention, whether the state of the charge-discharge system can ensure stable and safe operation of the hybrid electric vehicle can be determined by judging whether the high-voltage power-off condition is met, and the influence on the service life of each element in the charge-discharge system of the hybrid electric vehicle caused by continuous external discharge when the state of the charge-discharge system cannot meet the external discharge requirement is prevented.
Example eight
Fig. 9 is a flowchart of a discharge control method of a hybrid electric vehicle according to an eighth embodiment of the present invention. On the basis of the above embodiments, the present embodiment further increases a method for obtaining the load of the external load and the discharge power of the vehicle-mounted charger and determining the output current of the vehicle-mounted charger. As shown in fig. 9, the control method includes:
s701, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
And S702, determining the discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery.
And S703, acquiring the load of the external load and the discharge power of the vehicle-mounted charger.
Specifically, the load of the external load includes the power of all external electric devices and/or the sum of the power of all external electric devices and the consumed power of corresponding signals sent by the charging and discharging system.
S704, determining the output current of the vehicle-mounted charger according to the load of the external load, the discharge power of the vehicle-mounted charger, the electric quantity information of the power battery and the electric quantity information of the fuel battery.
In an exemplary embodiment, the vehicle-mounted charger can control the current output according to the load amount, but the maximum current output cannot exceed the sum of the discharge energy of the charge and discharge system. The output current of the vehicle-mounted charger is limited by information such as the load capacity of an external load, the discharge power of the vehicle-mounted charger, the electric quantity of the power battery and/or the electric quantity of the fuel battery. When the vehicle-mounted charger is in a battery discharge mode, the output current of the vehicle-mounted charger is limited by the load capacity of an external load, the discharge power of the vehicle-mounted charger, the electric quantity of a power battery and the like; when the load capacity of the external load is less than or equal to the discharge power of the vehicle-mounted charger and/or the electric quantity of the power battery, the output current of the vehicle-mounted charger is equal to the load capacity of the external load; when the load capacity of the external load is larger than the discharge power of the vehicle-mounted charger and/or the electric quantity of the power battery, the output current of the vehicle-mounted charger is equal to the discharge power of the vehicle-mounted charger or the smaller current which can be determined by the electric quantity of the power battery. When the vehicle-mounted charger is in a charging and discharging mode, the output current of the vehicle-mounted charger is limited by the load capacity of an external load, the discharging power of the vehicle-mounted charger, the electric quantity of a fuel cell and the like; when the load capacity of the external load is less than or equal to the discharge power of the vehicle-mounted charger and/or the electric quantity of the fuel cell, the output current of the vehicle-mounted charger is equal to the load capacity of the external load; when the load capacity of the external load is larger than the discharge power of the vehicle-mounted charger and/or the electric quantity of the fuel cell, the output current of the vehicle-mounted charger is equal to the discharge power of the vehicle-mounted charger or the smaller current which can be determined by the electric quantity of the fuel cell.
According to the embodiment of the invention, the output current of the vehicle-mounted charger is determined according to the information such as the load capacity of the external load, the discharge power of the vehicle-mounted charger and the like, so that the discharge can be carried out according to the requirement, the service life of each element in a charge and discharge system can be prolonged, and the stability and the safety of the external discharge can be improved on the premise of meeting the electricity utilization requirement of the electric equipment.
Example nine
Fig. 10 is a flowchart of a discharge control method of a hybrid electric vehicle according to a ninth embodiment of the present invention. On the basis of the above embodiments, the present embodiment further adds a method for controlling the display device and/or the user terminal of the hybrid electric vehicle to display the electric quantity information of the fuel cell and the electric quantity information of the power cell in real time. As shown in fig. 10, the control method includes:
s801, when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery.
And S802, determining the discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery.
And S803, controlling a display device and/or a user terminal of the hybrid electric vehicle to display the electric quantity information of the fuel cell and the electric quantity information of the power cell in real time.
Specifically, the display device of the hybrid vehicle may include, but is not limited to, an in-vehicle entertainment display, etc.; the user terminal refers to a terminal with a display function, and includes but is not limited to a mobile phone, a tablet, a computer, and the like. The charge information of the fuel cell includes, but is not limited to, the current amount of hydrogen in the fuel cell; the charge information of the power battery may include, but is not limited to, the current remaining charge of the power battery and the current discharge power of the power battery.
For example, when a user controls the hybrid electric vehicle to discharge to the outside, the user can check the electric quantity information of the power battery and the fuel battery of the hybrid electric vehicle through a display device such as a vehicle-mounted entertainment display or a user terminal according to needs, so that when the electric quantity of the hybrid electric vehicle is insufficient, measures are taken in time to prevent the current electric quantity of the hybrid electric vehicle during discharging from failing to meet the return requirement of the remaining driving mileage or the power utilization requirement of external power utilization equipment.
According to the embodiment of the invention, the display equipment and/or the user terminal of the hybrid electric vehicle are controlled to display the electric quantity information of the fuel cell and the electric quantity information of the power cell in real time, so that a user can timely know the current electric quantity information of the fuel cell and the electric quantity information of the power cell of the hybrid electric vehicle, and the flexibility and the reliability of user operation can be improved in the process of external discharge.
Example ten
The embodiment of the invention provides a discharge control device of a hybrid electric vehicle. The control device can be realized in the form of hardware and/or software, and can be integrated in a control system of the hybrid electric vehicle. The control device is used for controlling a charge and discharge system of the hybrid electric vehicle, the charge and discharge system at least comprises a vehicle-mounted charger, a power battery, a fuel cell and a DC/DC converter, and a charge port of the vehicle-mounted charger is connected with a charge gun or a discharge gun in a pluggable manner. As shown in fig. 11, the control device includes:
the information acquisition module 910 is configured to acquire current electric quantity information of the power battery and current electric quantity information of the fuel battery when the vehicle-mounted charger is in a high-voltage discharge state;
a mode determination module 920, configured to determine a discharge mode of the hybrid electric vehicle according to current electric quantity information of the power battery and current electric quantity information of the fuel battery; the discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through a discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun.
The discharge control device of the hybrid electric vehicle provided by the embodiment of the invention can execute the discharge control method of the hybrid electric vehicle provided by any embodiment of the invention, has corresponding functional modules and beneficial effects of the execution method, and the same points can be referred to the description above.
EXAMPLE eleven
The embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and the computer instructions are used for enabling a processor to implement the control method provided in any of the above embodiments when executed.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. The discharge control method of the hybrid electric vehicle is characterized in that the hybrid electric vehicle comprises a charge-discharge system; the charging and discharging system at least comprises a vehicle-mounted charger, a power battery, a fuel battery and a DC/DC converter, wherein a charging port of the vehicle-mounted charger is connected with a charging gun or a discharging gun in a pluggable manner; the discharge control method of the hybrid electric vehicle includes:
when the vehicle-mounted charger is in a high-voltage discharge state, acquiring current electric quantity information of a power battery and current electric quantity information of the fuel battery;
determining a discharge mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery; the discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, the discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun.
2. The discharge control method of a hybrid vehicle according to claim 1, wherein determining the discharge mode of the hybrid vehicle based on the current charge amount information of the power battery and the current charge amount information of the fuel battery includes:
judging whether the current electric quantity information of the power battery meets a first preset electric quantity condition or not; the current electric quantity information comprises the current residual electric quantity of the power battery and the current discharge power of the power battery; the first preset electric quantity condition comprises that the current residual electric quantity of the power battery is larger than a first preset residual electric quantity and the current discharge power of the power battery is larger than a first preset discharge power;
and if so, controlling the hybrid electric vehicle to enter the battery discharge mode.
3. The discharge control method of a hybrid vehicle according to claim 2, characterized by further comprising:
when the hybrid electric vehicle is in a battery discharge mode, acquiring the residual electric quantity and the discharge power of the power battery in real time;
when the residual electric quantity of the power battery is smaller than or equal to a second preset residual electric quantity, or the discharge power of the power battery is smaller than or equal to a second preset discharge power, judging whether the current electric quantity information of the fuel battery meets a second preset electric quantity condition; the current charge information of the fuel cell includes a current amount of hydrogen in the fuel cell; the second preset electric quantity condition comprises that the current hydrogen quantity is greater than a first preset hydrogen quantity;
and if so, switching the discharge mode of the hybrid electric vehicle from the battery discharge mode to the charge-discharge mode.
4. The discharge control method of a hybrid vehicle according to claim 2, wherein the discharge mode of the hybrid vehicle is determined based on current charge information of the power battery and current charge information of the fuel cell, further comprising:
when the current electric quantity information of the power battery does not meet the first preset electric quantity condition, judging whether the current electric quantity information of the fuel battery meets a second preset electric quantity condition or not; the current charge information of the fuel cell includes a current amount of hydrogen in the fuel cell; the second preset electric quantity condition comprises that the current hydrogen quantity is larger than a first preset hydrogen quantity;
and if so, controlling the hybrid electric vehicle to enter the charging and discharging mode.
5. The discharge control method of a hybrid vehicle according to claim 4, characterized by further comprising:
when the hybrid electric vehicle is in a charging and discharging mode, acquiring the residual electric quantity and the discharging power of the power battery in real time;
and when the residual capacity of the power battery is greater than a third preset residual capacity and the discharge power is greater than the preset discharge power, switching the discharge mode of the hybrid electric vehicle from the charge discharge mode to the battery discharge mode.
6. The discharge control method of a hybrid vehicle according to claim 4, wherein the discharge mode of the hybrid vehicle is determined based on current charge information of the power battery and current charge information of the fuel cell, further comprising:
if the hydrogen amount is less than or equal to the first preset hydrogen amount, performing alarm reminding;
after alarm reminding is carried out, acquiring the residual electric quantity of the power battery in real time;
judging whether the residual capacity of the power battery is greater than a fourth preset residual capacity;
if so, controlling the hybrid electric vehicle to enter the battery discharge mode;
if not, controlling the vehicle-mounted charger to enter a high-voltage low-voltage state.
7. The discharge control method for a hybrid electric vehicle according to claim 1, wherein before the vehicle-mounted charger is in the high-voltage discharge state, the method further comprises:
acquiring state information of the charge and discharge system and state information of the hybrid electric vehicle; the state information of the charging and discharging system comprises a power-on state of the discharging system, a connection state and a locking state of the vehicle-mounted charger and the discharging gun and temperature information of the discharging gun; the state information of the hybrid electric vehicle comprises gear information and fault information of the hybrid electric vehicle;
judging whether a high-voltage discharge condition is met or not according to the state information of the charge-discharge system and the state information of the hybrid electric vehicle; the high-voltage discharging condition comprises that the discharging system is in a non-driving power-on state, the vehicle-mounted charger is completely connected with the discharging gun and locked, the temperature of the discharging gun is lower than a preset temperature, the gear of the hybrid electric vehicle is a P gear, and the hybrid electric vehicle has no high-voltage fault;
and if so, controlling the vehicle-mounted charger to enter a high-voltage discharge state.
8. The discharge control method of a hybrid vehicle according to claim 1, further comprising, after determining a discharge mode of the hybrid vehicle:
acquiring state information of the charge and discharge system in real time; the state information of the charge and discharge system comprises the connection state and the locking state of the vehicle-mounted charger and the discharge gun, the temperature information of the discharge gun, the electric quantity information of the fuel cell and the power cell, and the fault state of the charge and discharge system;
judging whether the state information of the charge and discharge system meets the high-voltage power-off condition or not; the high-voltage power-off condition comprises at least one of an incomplete connection state of the vehicle-mounted charger and a discharge gun, an unlocked state of the vehicle-mounted charger and the discharge gun, a temperature of the discharge gun greater than a preset temperature, electric quantity information of the fuel cell in the charging and discharging mode not meeting preset fuel cell electric quantity, electric quantity information of the power cell in the battery discharging mode not meeting preset power cell electric quantity, and a fault of the charging and discharging system;
and if so, controlling the vehicle-mounted charger to enter a high-voltage low-voltage state.
9. The discharge control method for a hybrid vehicle according to claim 1, characterized by further comprising:
acquiring the load capacity of the external load and the discharge power of the vehicle-mounted charger;
and determining the output current of the vehicle-mounted charger according to the load of the external load, the discharge power of the vehicle-mounted charger, the electric quantity information of the power battery and the electric quantity information of the fuel battery.
10. The discharge control method for a hybrid vehicle according to claim 1, characterized by further comprising:
and controlling display equipment and/or a user terminal of the hybrid electric vehicle to display the electric quantity information of the fuel cell and the electric quantity information of the power cell in real time.
11. A discharge control device of a hybrid electric vehicle is characterized in that the hybrid electric vehicle comprises a charge-discharge system; the charging and discharging system at least comprises a vehicle-mounted charger, a power battery, a fuel cell and a DC/DC converter, a charging port of the vehicle-mounted charger is connected with a charging gun or a discharging gun in a pluggable manner, and the discharging control device of the hybrid electric vehicle comprises:
the information acquisition module is used for acquiring current electric quantity information of the power battery and current electric quantity information of the fuel battery when the vehicle-mounted charger is in a high-voltage discharge state;
the mode determining module is used for determining a discharging mode of the hybrid electric vehicle according to the current electric quantity information of the power battery and the current electric quantity information of the fuel battery; the discharging mode comprises a battery discharging mode and a charging and discharging mode; in the battery discharging mode, the discharging electric energy of the power battery is provided to the vehicle-mounted charger, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun; in the charging and discharging mode, the discharging electric energy of the fuel cell is converted by the DC/DC converter and then is provided to the vehicle-mounted charger and/or the power battery, and the vehicle-mounted charger is controlled to supply power to an external load through the discharging gun.
12. A computer-readable storage medium storing computer instructions for causing a processor to implement the discharge control method of the hybrid vehicle according to any one of claims 1 to 10 when executed.
13. A hybrid vehicle, characterized by comprising: a charging and discharging system and a control system;
the charging and discharging system at least comprises a vehicle-mounted charger, a power battery, a fuel battery and a DC/DC converter, wherein a charging port of the vehicle-mounted charger is connected with a charging gun or a discharging gun in a pluggable manner;
the control system is configured to execute a discharge control method of the hybrid vehicle according to any one of claims 1 to 10.
CN202210637313.2A 2022-06-07 2022-06-07 Hybrid electric vehicle, and discharge control method, control device and storage medium thereof Pending CN114851878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210637313.2A CN114851878A (en) 2022-06-07 2022-06-07 Hybrid electric vehicle, and discharge control method, control device and storage medium thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210637313.2A CN114851878A (en) 2022-06-07 2022-06-07 Hybrid electric vehicle, and discharge control method, control device and storage medium thereof

Publications (1)

Publication Number Publication Date
CN114851878A true CN114851878A (en) 2022-08-05

Family

ID=82623949

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210637313.2A Pending CN114851878A (en) 2022-06-07 2022-06-07 Hybrid electric vehicle, and discharge control method, control device and storage medium thereof

Country Status (1)

Country Link
CN (1) CN114851878A (en)

Similar Documents

Publication Publication Date Title
CN107554335B (en) Vehicle-mounted power system and automobile
JP5355641B2 (en) Power supply system
US7960857B2 (en) System and method for vehicle based uninterruptable power supply
KR101047831B1 (en) Safety component by fuse at high voltage battery sensing line
US10263438B2 (en) Battery management system for vehicle
KR20120107969A (en) Power feed system for electric vehicle
CN113067404B (en) Power supply system and power supply method for power exchange station
CN103855748A (en) Vehicle charging system and method
CN111546938B (en) Vehicle hybrid storage battery management system and method
CN105790374B (en) A kind of vehicle-mounted storing up electricity case
CN109094401A (en) Energy vehicle charge control method, storage medium, control device and charging pile
CN108899965A (en) Charging pile method for controlling power supply, storage medium, control device and charging pile
CN110103850B (en) Battery system for preventing vehicle-mounted low-voltage power supply from power shortage
CN110745022A (en) A multi-functional controller and new energy automobile for new energy automobile
JP2011217428A (en) Storage battery system for electric movable bodies and electric vehicle
CN114851878A (en) Hybrid electric vehicle, and discharge control method, control device and storage medium thereof
CN103633672A (en) Vehicle-mounted wireless device power supply protection device and power supply method
KR101826836B1 (en) Portable multi power supply apparatus
CN116001572A (en) Battery pack and battery pack management method
CN211308268U (en) Electric automobile and direct current charging circuit and fill electric pile thereof
CN113612274A (en) Vehicle-mounted mobile power supply and control method thereof
CN204044327U (en) A kind of application system of car battery intelligent sensor
CN210137072U (en) High-voltage distribution box for battery pack group
CN112874303B (en) New energy automobile safety monitoring method
CN210390845U (en) Double-source output power battery pack of new energy automobile

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