CN115091954B - Mobile carrier starting method and device and electronic equipment - Google Patents

Mobile carrier starting method and device and electronic equipment Download PDF

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Publication number
CN115091954B
CN115091954B CN202210715810.XA CN202210715810A CN115091954B CN 115091954 B CN115091954 B CN 115091954B CN 202210715810 A CN202210715810 A CN 202210715810A CN 115091954 B CN115091954 B CN 115091954B
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power
starting
torque
mobile carrier
started
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CN115091954A (en
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阎全忠
李洁辰
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Shanghai Rox Intelligent Technology Co Ltd
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Shanghai Rox Intelligent Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The application provides a method and a device for starting a mobile carrier and electronic equipment, wherein the method comprises the following steps: receiving a starting instruction aiming at a mobile carrier to be started, and acquiring the discharge power capacity of a power battery on the mobile carrier to be started, wherein the power battery is a main power source of the mobile carrier to be started; acquiring target starting power of a mobile carrier to be started, and determining whether the discharging power capacity of a power battery is smaller than the target starting power; if the power is smaller than the target starting power, acquiring the power supply of charging equipment connected with the mobile carrier to be started; determining whether the power supply power of the charging device is not less than the target starting power; and if the power is not smaller than the target starting power, starting the mobile carrier to be started by using the power supply provided by the charging equipment. By adopting the mobile carrier starting method, the mobile carrier starting device and the electronic equipment, the problem that the whole vehicle cannot be started when the high-voltage battery has no discharging capacity is solved.

Description

Mobile carrier starting method and device and electronic equipment
Technical Field
The application relates to the technical field of vehicles, in particular to a method and a device for starting a mobile carrier and electronic equipment.
Background
The plug-in hybrid power (including range-extending) automobile is a new energy automobile with a driving motor and an engine as power sources, and is popular because of longer driving range and more convenient use. According to the mode of the power source participating in driving, the plug-in type hybrid system generally has two driving modes of pure electric driving and hybrid electric driving (the hybrid mode generally comprises series connection, parallel connection, series-parallel connection and the like). In a plug-in hybrid system, the high-voltage power battery is not only the main energy source of the driving motor, but also the main, even the only, energy source of the engine starting motor.
When the high-voltage battery of the automobile has a fault without discharging capacity or has no discharging capacity under extreme working conditions, the problem that the whole automobile cannot be driven can be caused.
Disclosure of Invention
In view of this, the present application aims to provide a method and apparatus for starting a mobile carrier, and an electronic device, which solve the problem that the whole vehicle cannot be started when the high-voltage battery has no discharging capability.
In a first aspect, an embodiment of the present application provides a method for starting a mobile carrier, including:
receiving a starting instruction aiming at a mobile carrier to be started, and acquiring the discharge power capacity of a power battery on the mobile carrier to be started, wherein the power battery is a main power source of the mobile carrier to be started;
acquiring target starting power of a mobile carrier to be started, and determining whether the discharging power capacity of a power battery is smaller than the target starting power;
if the power is smaller than the target starting power, acquiring the power supply of charging equipment connected with the mobile carrier to be started;
determining whether the power supply power of the charging device is not less than the target starting power;
and if the power is not smaller than the target starting power, starting the mobile carrier to be started by using the power supply provided by the charging equipment.
Optionally, the mobile carrier to be started comprises a starting motor and an engine; starting the mobile carrier to be started by using the power supply provided by the charging equipment, comprising: determining a first torque based on the reverse drag torque, a preset rotational speed acceleration, and an engine rotational inertia; and comparing the second torque corresponding to the power supply power of the charging equipment with the first torque, and selecting the minimum torque as the first starting torque. And starting the starting motor according to the first starting torque so that the starting motor drives the engine to start.
Optionally, determining the first torque based on the drag torque, the preset rotational speed acceleration, and the engine moment of inertia includes: determining the product of the preset rotational speed acceleration and the rotational inertia of the engine as rotational torque; the sum of the rotational torque and the drag torque is determined as the first torque.
Optionally, obtaining the target starting power of the mobile carrier to be started includes: obtaining reverse drag resistance torque of an engine of a mobile carrier to be started at different rotating speeds in a test mode; determining candidate starting power corresponding to each rotating speed based on the reverse drag resistance torque; and selecting the candidate starting power with the largest numerical value in the target rotating speed range from the plurality of candidate starting powers as the target starting power.
Optionally, after starting the mobile carrier to be started by using the power supply provided by the charging device, the method further includes: acquiring the current torque and the current rotating speed of a starting motor;
determining a target charging power based on the current torque, the current rotational speed, and the power conversion efficiency; and charging the starting motor according to the target charging power.
Optionally, after determining whether the discharge power capability of the power battery is less than the target starting power, further comprising: if the starting power is not smaller than the target starting power, determining a second starting torque; and starting the starting motor according to the second starting torque so that the starting motor drives the engine to start.
Optionally, determining the second starting torque includes: and comparing the third torque corresponding to the discharging power capacity of the power battery with the first torque, and selecting the minimum torque as the second starting torque.
Optionally, the charging device comprises a charging gun and a power supply device; obtaining the power supply of the charging equipment connected with the mobile carrier to be started comprises the following steps: acquiring the charging power capacity of a charging gun and the power supply power of power supply equipment; and selecting the power with the minimum value from the charging power capacity and the power supply power of the charging gun as the power supply power of the charging equipment.
In a second aspect, embodiments of the present application further provide a mobile carrier activation device, where the device includes:
the battery power acquisition module is used for receiving a starting instruction aiming at the mobile carrier to be started, acquiring the discharge power capacity of a power battery on the mobile carrier to be started, wherein the power battery is a main power source of the mobile carrier to be started;
the first comparison module is used for acquiring target starting power of the mobile carrier to be started and determining whether the discharging power capacity of the power battery is smaller than the target starting power;
the device power acquisition module is used for acquiring the power supply power of the charging device connected with the mobile carrier to be started if the power supply power is smaller than the target starting power;
the second comparison module is used for determining whether the power supply power of the charging equipment is not less than the target starting power;
and the starting module is used for starting the mobile carrier to be started by using the power supply provided by the charging equipment if the power supply is not smaller than the target starting power.
In a third aspect, embodiments of the present application further provide an electronic device, including: the system comprises a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, the processor and the memory are communicated through the bus when the electronic device runs, and the machine-readable instructions are executed by the processor to execute the steps of the mobile carrier starting method.
The embodiment of the application brings the following beneficial effects:
according to the method and device for starting the mobile carrier and the electronic equipment, provided by the embodiment of the application, the power supply of the charging equipment can be obtained under the condition that the power battery has no discharging capacity, and the mobile carrier to be started is started by using the power supply provided by the charging equipment under the condition that the power supply of the charging equipment is not smaller than the target starting power. Compared with the starting method of the mobile carrier in the prior art, the starting method solves the problem that the whole vehicle cannot be started when the high-voltage battery has no discharging capacity.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart illustrating a method for starting a mobile carrier according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a mobile carrier starting device according to an embodiment of the present disclosure;
fig. 3 shows a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments of the present application, every other embodiment that a person skilled in the art would obtain without making any inventive effort is within the scope of protection of the present application.
It is noted that, before the application, the plug-in hybrid power (including extended range) automobile is a new energy automobile with a driving motor and an engine as power sources, and is more convenient and popular because of longer driving range. According to the mode of the power source participating in driving, the plug-in type hybrid system generally has two driving modes of pure electric driving and hybrid electric driving (the hybrid mode generally comprises series connection, parallel connection, series-parallel connection and the like). In a plug-in hybrid system, the high-voltage power battery is not only the main energy source of the driving motor, but also the main, even the only, energy source of the engine starting motor. When the high-voltage battery of the automobile has a fault without discharge capability or has no discharge capability under extreme working conditions (for example, the working condition that the temperature of the battery core is extremely low), the problem that the whole automobile cannot be driven can be caused.
Based on the above, the embodiment of the application provides a mobile carrier starting method, so as to solve the problem that the whole vehicle cannot be started when a high-voltage battery has no discharging capability.
Referring to fig. 1, fig. 1 is a flowchart of a method for starting a mobile carrier according to an embodiment of the present application. As shown in fig. 1, the method for starting a mobile carrier provided in the embodiment of the present application includes:
step S101, receiving a starting instruction for a mobile carrier to be started, and obtaining the discharging power capacity of a power battery on the mobile carrier to be started.
In this step, the mobile vehicle to be started may refer to a mobile vehicle that is mainly powered by a power battery and has an engine.
The mobile vehicle to be started may be a hybrid vehicle with an engine, for example.
The start command may refer to a command for starting the mobile carrier to be started, and as an example, the start command may be a command generated after the vehicle owner presses a start button.
The power battery is the primary source of power for the mobile vehicle to be started, and may be a high voltage battery, for example.
The discharge power capability can refer to the maximum allowable discharge power of the power battery, and is used for representing the current discharge capability of the power battery, and the discharge power capability of the power battery is recorded as P 0 。
In this embodiment of the present application, after receiving a start instruction, it is described that a mobile carrier to be started is to be started, at this time, a discharge power capability of a power battery on the mobile carrier to be started is first obtained, so as to determine whether to start a start motor of the mobile carrier to be started by using electric energy provided by the power battery according to the discharge power, and then the start motor is used to drive an engine of the mobile carrier to be started to start.
Step S102, obtaining target starting power of the mobile carrier to be started, and determining whether the discharging power capacity of the power battery is smaller than the target starting power.
In this step, the target starting power may refer to the power that needs to be reached when starting the engine of the mobile vehicle to be started, and the target starting power is denoted as: p (P) 1 。
In this embodiment of the present application, since the mobile vehicle to be started is powered by the power battery, it needs to be determined whether the current discharging power capability of the power battery is sufficient to meet the requirement of engine starting, and therefore, whether the current discharging power capability of the power battery meets the starting requirement can be determined by comparing the magnitude relation between the discharging power capability of the power battery and the target starting power.
In an alternative embodiment, obtaining the target starting power of the mobile carrier to be started includes: obtaining reverse drag resistance torque of an engine of a mobile carrier to be started at different rotating speeds in a test mode; determining candidate starting power corresponding to each rotating speed based on the reverse drag resistance torque; and selecting the candidate starting power with the largest numerical value in the target rotating speed range from the plurality of candidate starting powers as the target starting power.
Here, the reverse drag torque may refer to the drag torque at the time of engine idling, which is the resistance generated by the pistons performing a "compression process" at the time of engine idling (in the case of engine misfire).
Specifically, since the reverse drag torque cannot be directly obtained, the reverse drag torque of the engine at different rotational speeds needs to be determined in a test manner, for example: the reverse drag resistance torque of the engine at different rotating speeds can be measured by using the measuring and controlling machine. Then, a plurality of rotating speeds can be selected, and for each rotating speed, the product of the reverse drag resistance torque corresponding to the rotating speed and the rotating speed is calculated, and the ratio of the product to the conversion coefficient is determined as the candidate starting power corresponding to the rotating speed. And finally, selecting the maximum value of the plurality of candidate starting powers as the target starting power.
It should be noted that the selected plurality of rotational speeds are selected within a target rotational speed range of the engine, the target rotational speed may refer to a rotational speed reached after the engine is started, and the target rotational speed range may refer to a range smaller than the target rotational speed. Taking 1000 rpm as an example, the target rotation speed reached after the engine is started, 0 rpm-1000 rpm is the target rotation speed range, a plurality of rotation speeds can be selected from the range, then, for each rotation speed, the product of the reverse drag resistance torque corresponding to the rotation speed and the rotation speed is calculated, and the ratio of the product and the conversion coefficient 9549 is determined as the candidate starting power corresponding to the rotation speed.
In an alternative embodiment, after determining whether the discharge power capability of the power cell is less than the target starting power, further comprising: if the starting power is not smaller than the target starting power, determining a second starting torque; and starting the starting motor according to the second starting torque so that the starting motor drives the engine to start.
Here, the second starting torque may refer to the output torque of the starting motor, and is denoted as T 2 。
The starting motor can refer to a starting motor, the starting motor is a motor for starting the engine, the engine cannot be directly started due to the fact that the rotational inertia of the generator is large, and the engine is driven to reach the target rotating speed by the special motor, so that the engine is started.
Taking a hybrid electric vehicle as an example, there may be a separate starter motor, such as a BSG (Belt-Driven Starter Generator) motor or an ISG motor, or there may be no separate starter motor, and in the absence of a separate starter motor, a TM drive motor may be used as the starter motor. The TM motor may be integrated in the hybrid gearbox, may be integrated on the drive shaft, and may be single or two. However, the method of starting the mobile carrier of the present application is applicable regardless of the mode.
Normally, the power for engine start is from a high voltage battery and a starter motor that operates in a torque control mode.
Specifically, if the discharging power capability of the power battery is not less than the target starting power, it is indicated that the current discharging capability of the power battery can meet the requirement of starting the mobile carrier to be started, so that the starting motor can be started according to the second starting torque. Wherein the second starting torque is determined based on the first torque and the third torque.
In an alternative embodiment, determining the second launch torque includes: and comparing the third torque corresponding to the discharging power capacity of the power battery with the first torque, and selecting the minimum torque as the second starting torque.
Here, the third torque may refer to a torque corresponding to a discharge power capacity of the power battery, and is denoted as t 3 。
Specifically, the third torque is obtained by converting the discharge power capability of the power battery, and can be obtained by calculating the following formula: t is t 3 ＝P 0 X9549/n, where P 0 Representing the discharge power capacity of the power cell, n representing the target rotational speed. Due to movement ofThe discharging power capacity of the power battery is larger than or equal to the target starting power, and the third torque corresponding to the discharging power capacity of the power battery can meet the requirement of starting the mobile carrier to be started, meanwhile, the first torque is calculated to be the torque required by starting the engine, and can also meet the requirement of starting the engine. T (T) 2 ＝min(t 1 ,t 3 )。
Step S103, if the power is smaller than the target starting power, the power supply of the charging equipment connected with the mobile carrier to be started is obtained.
In this step, the charging device may refer to a device for charging the mobile carrier to be started, and the charging device is connected to the mobile carrier to be started.
The power supply of the charging device may refer to the output power of the charging device, and the magnitude of the power supply determines the charging speed.
In this embodiment of the present application, if the discharging power capability of the power battery is smaller than the target starting power, it is indicated that the discharging capability of the power battery of the mobile carrier to be started cannot provide enough power to start the mobile carrier. If the mobile carrier to be started is connected with the charging equipment and is being charged by the charging equipment, whether the mobile carrier to be started can be started by the power supply provided by the charging equipment can be judged according to the power supply of the charging equipment.
In an alternative embodiment, the charging device comprises a charging gun and a power supply device; obtaining the power supply of the charging equipment connected with the mobile carrier to be started comprises the following steps: acquiring the charging power capacity of a charging gun and the power supply power of power supply equipment; and selecting the power with the minimum value from the charging power capacity of the charging gun and the power supply power of the power supply equipment as the power supply power of the charging equipment.
Here, the charging device comprises a charging gun and a power supply device, the power supply device supplies power to the mobile carrier to be started through the charging gun.
One end of the charging gun is connected with power supply equipment, and electric energy is obtained from the power supply equipment; the other end of the charging gun is connected with a charging port of the mobile carrier to be started to provide power for the mobile carrier to be started, wherein the charging equipment can provide electric power in real time, and the starting motor can be started when the electric power is enough to bring the mobile carrier to the engine for starting.
The power supply device may refer to a device capable of providing electric energy, and as an example, the power supply device may be a charging pile, or may be a mobile carrier with a power supply function, for example: an automobile with a power supply function.
The charging capability of the charging gun is different from the power supply capability of the power supply device, and the minimum value of the charging capability and the power supply capability determines the power supply capability of the power supply device. The charging power is used for representing the charging capability of the charging gun, the power supply power is used for representing the power supply capability of the power supply equipment, the power with the minimum numerical value between the charging power capability of the charging gun and the power supply power of the power supply equipment is selected as the power supply power of the charging equipment, and the power supply power of the charging equipment is recorded as: p (P) 2 。
Specifically, acquiring the charging power of the charging gun and the power supply of the power supply equipment comprises acquiring interface parameters of a charging port on the mobile carrier to be started, wherein the interface parameters comprise slow pile punching parameters or fast pile charging parameters, the slow pile charging parameters comprise cc voltage, cp frequency, cp duty ratio and the like, the fast pile charging parameters comprise cc2 voltage, A+ voltage and the like, and the connection state of the charging gun, the charging pile state, the charging power of the charging gun, the power supply of the charging pile, whether charging starts and the like can be determined through the interface parameters. The charging pile state refers to a charging pile starting state or a working state.
The charging power of the charging gun and the power supply power of the power supply equipment are obtained through calculation according to the interface parameters, and the calculation method is the prior art and is not repeated here.
The connection state of the charging gun and the state of the power supply equipment are judged according to interface parameters, firstly, the cc connection state is judged according to cc voltage, the cc2 connection state is judged according to cc2 voltage, the cp connection state is judged according to cp voltage, the cp frequency state is judged according to cp frequency, and then the charging gun connection state is determined according to the cp connection state and the cc connection state.
Taking the charging gun as an example, the charging gun is divided into a fast charging gun and a slow charging gun, when cc connection is normal, cp connection is normal and the vehicle speed is smaller than a set value, the slow charging gun connection is determined to be normal, and when cc2 connection is normal and the vehicle speed is smaller than the set value, the fast charging gun connection is determined to be normal.
After the charging power of the charging gun and the power supply power of the power supply equipment are determined, the minimum value of the charging power and the power supply power of the power supply equipment can be selected as the power supply power of the charging equipment.
Step S104, it is determined whether the power supply of the charging device is not less than the target start-up power.
In this step, in order to start the mobile vehicle to be started by the charging device, it is necessary to determine whether or not the power supplied by the charging device is sufficient to meet the start requirement, that is, whether or not the power supplied by the charging device is greater than or equal to the target start power.
In this embodiment of the present application, before determining whether the power supply of the charging device is not less than the target starting power, the method further includes determining whether the connection of the charging gun is normal, if the connection of the charging gun is normal, the charging gun can provide power for the starting motor, if the connection of the charging gun is abnormal, the charging gun cannot provide power for the starting motor, and if the connection of the charging gun is abnormal, the step of obtaining the interface parameter of the charging port needs to be performed in a returning manner, and whether the connection of the charging gun is normal is determined again.
Step 105, if not less than the target starting power, starting the mobile carrier to be started by using the power supplied by the charging device.
In this step, if the power supplied by the charging device is greater than or equal to the target starting power, it is indicated that the charging device is capable of providing sufficient power for the starting motor, that is, the starting motor has starting capability to drive the engine to start, so that the mobile carrier to be started can be started by using the charging device, that is, the engine of the mobile carrier to be started can be started by using the power supplied by the charging device.
If the power supply power of the charging device is smaller than the target starting power, the charging device is not capable of providing enough power for the starting motor to drive the engine to start, and the engine is forbidden to start under the condition that the discharging power capacity of the power battery is insufficient and the charging power of the charging device is insufficient.
In an alternative embodiment, the mobile vehicle to be started comprises a starting motor and an engine; starting the mobile carrier to be started by using the power provided by the charging equipment, comprising: determining a first torque based on the reverse drag torque, a preset rotational speed acceleration, and an engine rotational inertia; and comparing the second torque corresponding to the power supply power of the charging equipment with the first torque, and selecting the minimum torque as the first starting torque. And starting the starting motor according to the first starting torque so that the starting motor drives the engine to start.
Here, the first starting torque may refer to a preset torque of the starting motor, which is used to characterize a torque of the starting motor that is desired to be achieved when starting the mobile carrier to be started by the charging device, and is denoted as T 1 。
The first torque may refer to the torque required to start the engine to a target rotational speed, the first torque being noted as: t is t 1 . Here, the first torque is obtained by taking into consideration a resistance torque in addition to a rotation torque (inertia torque), wherein the resistance torque refers to a torque formed by frictional resistance, air compression resistance, or the like.
The second torque may refer to a torque corresponding to a power supply of the charging device, and the second torque is recorded as: t is t 2 。
The second torque is obtained by converting the power supply of the charging device, and can be obtained by calculating the following formula: t is t 2 ＝P 2 X9549/n, where P 2 Represents the power supply of the charging device, and n represents the target rotational speed.
Specifically, because the first torque and the second torque can both meet the torque requirement when the starting motor is started, the torque with the smallest value is selected as the first starting torque, that is, the following formula can be obtained: t (T) 1 ＝min(t 1 ,t 2 )。
In an alternative embodiment, determining the first torque based on the drag torque, the preset rotational acceleration, and the engine moment of inertia includes: determining the product of the preset rotational speed acceleration and the rotational inertia of the engine as rotational torque; the sum of the rotational torque and the drag torque is determined as the first torque.
Here, the preset rotational speed acceleration may refer to rotational speed acceleration that is required to be reached when the engine is operated to the target rotational speed within a desired start time.
As an example, the starting time may be 1 second, and the preset rotational speed acceleration may be calculated according to the target rotational speed and the starting time 1 second when starting, and the method for calculating the rotational speed acceleration through the target rotational speed and the starting time belongs to the prior art and is not described herein.
The engine rotational inertia is a known parameter value of the engine.
The rotational torque may refer to the torque when the engine reaches the target rotational speed without consideration of the drag resistance, the rotational torque being the torque that is required to be reached to overcome the inertia torque at the time of engine start, it being understood that the rotational torque is the resistance torque in the acceleration dimension at the time of engine start.
Specifically, the reverse drag resistance torque is recorded as t, the preset rotational speed acceleration is alpha, the rotational inertia of the engine is recorded as j, the rotational torque is j×alpha, and the first torque t 1 ＝t+j×ɑ。
In an alternative embodiment, after starting the mobile carrier to be started by using the power supplied by the charging device, the method further includes: acquiring the current torque and the current rotating speed of a starting motor; determining a target charging power based on the current torque, the current rotational speed, and the power conversion efficiency; and charging the starting motor according to the target charging power.
Here, the power conversion efficiency may refer to an efficiency of converting mechanical power of the starter motor into electric power, and the power conversion efficiency is a characteristic parameter value of the starter motor and is a value determined after shipment of the starter motor.
The current mechanical power of the starting motor can be determined according to the current torque and the current rotating speed, and the current electric power of the starting motor can be determined through the power conversion efficiency.
Specifically, the product of the current torque and the current rotational speed is calculated, then the ratio of the product to the conversion coefficient 9549 is used as the current mechanical power of the starter motor, and then the ratio of the current mechanical power of the starter motor to the power conversion efficiency is used as the target charging power of the starter motor, i.e., the required electric power. The current torque and the current rotating speed can be directly obtained and are measured operation parameters of the starting motor.
After determining the target charging power of the starting motor, an On Board Charger (OBC) may provide a power supply request to the charging device, requesting the power supply device in the charging device to provide electric energy greater than or equal to the target charging power, so as to ensure the operation of the starting motor. Here, the target charging power requested by the OBC does not exceed the power supply power of the charging device.
The OBC receives the electric energy provided by the charging equipment and distributes the electric energy to the starting motor so that the starting motor can be started by using the distributed electric energy, and if the redundant electric energy can be distributed to the power battery for charging.
Compared with the starting method of the mobile carrier in the prior art, the method and the device have the advantages that the power supply of the charging equipment can be obtained under the condition that the power battery does not have the discharging capability, and the mobile carrier to be started is started by using the power supply provided by the charging equipment under the condition that the power supply of the charging equipment is not smaller than the target starting power, so that the problem that the whole vehicle cannot be started when the high-voltage battery does not have the discharging capability is solved.
Based on the same inventive concept, the embodiment of the present application further provides a mobile carrier starting device corresponding to the mobile carrier starting method, and since the principle of solving the problem of the device in the embodiment of the present application is similar to that of the mobile carrier starting method in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repetition is omitted.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a mobile carrier starting device according to an embodiment of the present application. As shown in fig. 2, the mobile carrier activation device 200 includes:
the battery power acquisition module 201 is configured to receive a start command for a mobile carrier to be started, and acquire a discharge power capability of a power battery on the mobile carrier to be started, where the power battery is a main power source of the mobile carrier to be started;
a first comparing module 202, configured to obtain a target starting power of the mobile carrier to be started, and determine whether a discharging power capability of the power battery is smaller than the target starting power;
the device power obtaining module 203 is configured to obtain, if the device power obtaining module is smaller than the target starting power, a power supply of a charging device connected to the mobile carrier to be started;
a second comparing module 204, configured to determine whether the power supplied by the charging device is not less than the target starting power;
the starting module 205 is configured to start the mobile carrier to be started by using the power supplied by the charging device if the power is not less than the target starting power.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 3, the electronic device 300 includes a processor 310, a memory 320, and a bus 330.
The memory 320 stores machine-readable instructions executable by the processor 310, when the electronic device 300 is running, the processor 310 communicates with the memory 320 through the bus 330, and when the machine-readable instructions are executed by the processor 310, the steps of the method for starting a mobile carrier in the method embodiment shown in fig. 1 can be executed, and the specific implementation is referred to the method embodiment and will not be described herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (9)

1. A method for starting a mobile carrier, comprising:
receiving a starting instruction aiming at a mobile carrier to be started, and acquiring the discharge power capacity of a power battery on the mobile carrier to be started, wherein the power battery is a main power source of the mobile carrier to be started;
acquiring target starting power of the mobile carrier to be started, and determining whether the discharging power capacity of the power battery is smaller than the target starting power;
if the power is smaller than the target starting power, acquiring the power supply of charging equipment connected with the mobile carrier to be started;
determining whether the power supply power of the charging device is not less than the target starting power;
if the power is not smaller than the target starting power, starting the mobile carrier to be started by using the power supply power provided by the charging equipment;
the to-be-started mobile carrier comprises a starting motor and an engine;
the starting the mobile carrier to be started by using the power supply provided by the charging equipment includes:
determining a first torque based on the reverse drag torque, a preset rotational speed acceleration, and an engine rotational inertia;
comparing a second torque corresponding to the power supply power of the charging equipment with the first torque, and selecting the minimum torque as a first starting torque;
and starting the starting motor according to the first starting torque so that the starting motor drives the engine to start.
2. The method of claim 1, wherein the determining the first torque based on the drag torque, a preset rotational acceleration, and an engine moment of inertia comprises:
determining the product of the preset rotational speed acceleration and the rotational inertia of the engine as rotational torque;
and determining the sum of the rotation torque and the reverse drag resistance torque as a first torque.
3. The method of claim 1, wherein the obtaining the target starting power of the mobile carrier to be started comprises:
obtaining reverse drag resistance torque of the engine of the mobile carrier to be started at different rotating speeds in a test mode;
determining candidate starting power corresponding to each rotating speed based on the reverse drag resistance torque;
and selecting the candidate starting power with the largest numerical value in the target rotating speed range from the plurality of candidate starting powers as the target starting power.
4. The method according to claim 1, further comprising, after starting the mobile carrier to be started with the power supply provided by the charging device:
acquiring the current torque and the current rotating speed of the starting motor;
determining a target charging power based on the current torque, the current rotational speed, and the power conversion efficiency;
and charging the starting motor according to the target charging power.
5. The method of claim 1, further comprising, after determining whether the discharge power capability of the power cell is less than the target starting power:
if the starting power is not smaller than the target starting power, determining a second starting torque;
and starting the starting motor according to the second starting torque so that the starting motor drives the engine to start.
6. The method of claim 5, wherein the determining the second launch torque comprises:
and comparing the third torque corresponding to the discharging power capacity of the power battery with the first torque, and selecting the minimum torque as the second starting torque.
7. The method of claim 1, wherein the charging device comprises a charging gun and a power supply device;
the obtaining the power supply of the charging device connected with the mobile carrier to be started comprises the following steps:
acquiring charging power capacity of the charging gun and power supply power of the power supply equipment;
and selecting the power with the minimum value from the charging power capacity of the charging gun and the power supply as the power supply power of the charging equipment.
8. A mobile carrier activation device, comprising:
the battery power acquisition module is used for receiving a starting instruction aiming at the mobile carrier to be started, and acquiring the discharge power capacity of a power battery on the mobile carrier to be started, wherein the power battery is a main power source of the mobile carrier to be started;
the first comparison module is used for obtaining the target starting power of the mobile carrier to be started and determining whether the discharging power capacity of the power battery is smaller than the target starting power;
the equipment power acquisition module is used for acquiring the power supply power of the charging equipment connected with the mobile carrier to be started if the equipment power acquisition module is smaller than the target starting power;
a second comparing module, configured to determine whether the power supply of the charging device is not less than the target starting power;
the starting module is used for starting the mobile carrier to be started by using the power supply provided by the charging equipment if the power supply is not smaller than the target starting power;
the to-be-started mobile carrier comprises a starting motor and an engine;
the starting module is further specifically configured to:
determining a first torque based on the reverse drag torque, a preset rotational speed acceleration, and an engine rotational inertia;
comparing a second torque corresponding to the power supply power of the charging equipment with the first torque, and selecting the minimum torque as a first starting torque;
and starting the starting motor according to the first starting torque so that the starting motor drives the engine to start.
9. An electronic device, comprising: a processor, a storage medium and a bus, the storage medium storing machine-readable instructions executable by the processor, the processor and the storage medium communicating over the bus when the electronic device is running, the processor executing the machine-readable instructions to perform the steps of the mobile carrier activation method of any one of claims 1 to 7.
CN202210715810.XA 2022-06-22 2022-06-22 Mobile carrier starting method and device and electronic equipment Active CN115091954B (en)

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