CN111055723A - Energy efficiency management method and system for explosion-proof automobile - Google Patents
Energy efficiency management method and system for explosion-proof automobile Download PDFInfo
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- CN111055723A CN111055723A CN201911364038.6A CN201911364038A CN111055723A CN 111055723 A CN111055723 A CN 111055723A CN 201911364038 A CN201911364038 A CN 201911364038A CN 111055723 A CN111055723 A CN 111055723A
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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
- 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]
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
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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
- 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]
- B60L58/14—Preventing excessive discharging
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an energy efficiency management method and system for an explosion-proof automobile, wherein the method comprises the following steps: the BMS acquires the parameter value of the battery and uploads the parameter value to the whole vehicle controller through the CAN; the vehicle control unit presets a plurality of parameter thresholds, and compares the parameter values with the parameter thresholds to obtain a limited power grade; the vehicle control unit executes a corresponding power limiting working mode according to the power limiting grade, and sends a power limiting instruction to the motor controller according to the power limiting mode; the motor controller controls the motor to execute and/or close the auxiliary appliance in a corresponding power limit mode according to the power limit instruction. The vehicle controller sets a plurality of parameter thresholds and compares the parameter thresholds with the parameter values to obtain an output power limit instruction to the motor controller, the motor controller controls the motor to execute in a corresponding power limit mode, on one hand, the battery energy is prevented from being excessively quickly consumed, the vehicle runs more durably, on the other hand, the vehicle is prevented from running at full power all the time to cause the vehicle to have safety accidents, and the safety of the vehicle is improved.
Description
Technical Field
The invention relates to the field of explosion-proof automobiles, in particular to an energy efficiency management method and system of an explosion-proof automobile.
Background
With the development of the coal mine industry, in order to meet the requirements of rapid collection of coal mines and improvement of construction efficiency, the explosion-proof automobile used in the coal mine industry is provided, and the safety performance of the explosion-proof automobile is extremely high because the explosion-proof automobile is located in a high-risk coal mine in a sub-working environment.
In order to meet the safety performance requirement of an explosion-proof automobile, the conventional explosion-proof automobile adopts an electric mode as the driving energy of the automobile, and a battery is used as the driving energy of the explosion-proof automobile and a power supply for controlling the whole automobile, so that intelligent distribution of the electric energy of the battery is also one of the current problems. The energy efficiency of the battery of the conventional electric automobile is simply managed, the whole automobile control system enters a corresponding power mode according to the requirement of a driver, and the parameter condition of the battery is not considered. If the parameters of the battery change, the whole vehicle control system is still in a full-power working mode, the performance of the battery of the explosion-proof vehicle is easily damaged, and the safety performance of the whole explosion-proof vehicle is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an energy efficiency management method for an explosion-proof automobile, which can control a whole automobile control system to be brought into a corresponding power limiting working mode according to the parameter value change of a battery so as to ensure that the battery is in a safe working state, thereby improving the safety performance of the explosion-proof automobile.
The invention further provides an energy efficiency management system of the explosion-proof automobile.
In a first aspect, an embodiment of the present invention provides an energy efficiency management method for an explosion-proof vehicle, including: the BMS acquires the parameter value of the battery and uploads the parameter value to the whole vehicle controller through the CAN;
the vehicle control unit presets a plurality of parameter thresholds, and compares the parameter values with the parameter thresholds to obtain a limited power grade;
the vehicle control unit executes a corresponding power limiting working mode according to the power limiting grade and sends a power limiting instruction to the motor controller according to the power limiting working mode;
and the motor controller controls the motor to execute and/or close the auxiliary electric appliance in a corresponding power limiting mode according to the power limiting instruction.
The energy efficiency management method for the explosion-proof automobile provided by the embodiment of the invention at least has the following beneficial effects: the parameter value of the battery is obtained through the BMS and is sent to the vehicle control unit, the vehicle control unit compares the parameter value with the parameter threshold value to obtain a corresponding power limit level, the vehicle control unit sends a corresponding power limit command to the motor controller according to the power limit level, the motor controller controls the motor to operate in a corresponding power limit mode, so that the motor is controlled to operate in different power modes according to different parameter conditions of the battery, on one hand, the battery energy is prevented from being excessively quickly lost, the vehicle is enabled to operate more durably, on the other hand, the vehicle is prevented from always operating at full power to cause safety accidents of the vehicle, and the safety of the vehicle is improved.
According to other embodiments of the invention, an energy efficiency management method for an explosion-proof automobile comprises the following steps: the battery residual capacity ratio, the battery temperature value and the battery temperature difference value.
According to other embodiments of the present invention, in an energy efficiency management method for an explosion-proof vehicle, the parameter threshold includes: a remaining power energy efficiency zone value, a battery temperature threshold value, and a battery temperature difference threshold value.
According to another embodiment of the present invention, in an energy efficiency management method for an explosion-proof vehicle, the remaining capacity energy efficiency region value includes: the first energy efficiency area value, the second energy efficiency area value, the third energy efficiency area value and the fourth energy efficiency area value;
if the ratio of the residual electric quantity of the battery is in a first energy efficiency area value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off;
if the ratio of the residual electric quantity of the battery is in a second energy efficiency area value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction;
if the ratio of the residual electric quantity of the battery is in a third energy efficiency area value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction;
and if the ratio of the residual electric quantity of the battery is in a fourth energy efficiency area value, the vehicle control unit outputs a fourth power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the fourth power limit instruction.
According to other embodiments of the present invention, in an energy efficiency management method for an explosion-proof vehicle, the battery temperature threshold includes: a first temperature threshold, a second temperature threshold, and a third temperature threshold;
if the battery temperature value is within a first temperature threshold value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off;
if the battery temperature value is within a second temperature threshold value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction;
and if the battery temperature value is within a third temperature threshold value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction.
According to another embodiment of the present invention, in an energy efficiency management method for an explosion-proof vehicle, the battery temperature difference threshold includes: a first temperature difference threshold, a second temperature difference threshold, and a third temperature difference threshold;
if the battery temperature difference value is within a first temperature difference threshold value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off;
if the battery temperature difference value is within a second temperature difference threshold value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction;
and if the battery temperature difference value is within a third temperature difference threshold value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction.
According to another embodiment of the energy efficiency management method for the explosion-proof automobile, if the remaining power is not within the remaining power energy efficiency area value and/or the battery temperature is not within the battery temperature threshold and/or the battery temperature difference is not within the battery temperature difference threshold;
the vehicle control unit outputs alarm information to a display controller and sends a power-off instruction to the BMS management system;
if the vehicle control unit does not receive the feedback signal of the BMS within the preset feedback time, the vehicle control unit sends a power-off command to the BMS, and the BMS cuts off the charging mode of the battery according to the power-off command.
According to other embodiments of the present invention, an energy efficiency management method for an explosion-proof vehicle further includes:
and the vehicle control unit sends the parameter value and the limited power grade to a data monitoring platform through a wireless network.
In a second aspect, an embodiment of the present invention provides an explosion-proof vehicle energy efficiency management system, including:
a motor;
the acquisition module is used for acquiring the parameter value of the battery;
the comparison module is used for presetting a plurality of parameter thresholds and comparing the parameter values with the parameter thresholds to obtain a limited power grade;
the whole vehicle control module is used for entering a corresponding power limiting working mode according to the power limiting grade and sending a corresponding power limiting instruction;
and the motor control module is used for receiving the power limiting instruction and controlling the motor to execute a corresponding power limiting mode according to the power limiting instruction.
The energy efficiency management system of the explosion-proof automobile provided by the embodiment of the invention at least has the following beneficial effects: the parameter value of the battery is acquired through the acquisition module and is sent to the vehicle control unit, the vehicle control module compares the parameter value with a parameter threshold value to obtain a corresponding power limit level, the vehicle control module sends a corresponding power limit instruction to the motor controller according to the power limit level, and the motor control module controls the motor to operate in a corresponding power limit mode so as to control the motor to operate in different power modes according to different parameter conditions of the battery, so that the battery energy is prevented from being consumed too fast, and the vehicle can operate more durably.
According to other embodiments of the invention, the explosion-proof automobile energy efficiency management system comprises: the battery residual capacity ratio, the battery temperature value and the battery temperature difference value;
the comparison module comprises: the residual electric quantity comparison submodule is used for presetting a plurality of residual electric quantity energy efficiency zone values and comparing the battery residual electric quantity ratio with the plurality of residual electric quantity energy efficiency zone values to obtain a corresponding power limit grade;
the battery temperature comparison submodule is used for presetting a plurality of battery temperature thresholds and comparing the battery temperature values with the battery temperature thresholds to obtain corresponding limited power grades;
and the battery temperature difference comparison submodule is used for presetting a plurality of battery temperature difference thresholds and comparing the battery temperature difference values with the battery temperature difference thresholds to obtain corresponding limited power grades.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of an energy efficiency management method for an explosion-proof vehicle according to the present invention;
fig. 2 is a block diagram of an energy efficiency management system of an explosion-proof vehicle according to an embodiment of the present invention.
Reference numerals: 100. an acquisition module; 200. a comparison module; 210. a remaining power comparison submodule; 220. a battery temperature comparison submodule; 230. a battery temperature difference comparison submodule; 300. a vehicle control module; 400. a motor control module; 500. an electric motor.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Referring to fig. 1, a schematic flow chart of an energy efficiency management method for an explosion-proof vehicle in an embodiment of the invention is shown. The method specifically comprises the following steps:
the BMS acquires the parameter value of the battery and uploads the parameter value to the whole vehicle controller through the CAN;
wherein the parameter values include: the battery residual capacity ratio, the battery temperature value and the battery temperature difference value have large influence on the energy efficiency of the automobile, so that the energy efficiency of the automobile is managed according to the battery residual capacity ratio, the battery temperature value and the battery temperature difference value, and the energy use of the automobile is managed better.
The method comprises the steps that a vehicle control unit presets a plurality of parameter threshold values, and parameter values are compared with the parameter threshold values to obtain a limited power grade;
the vehicle control unit executes a corresponding power limiting working mode according to the power limiting grade, and sends a power limiting instruction to the motor controller according to the power limiting mode;
and the motor controller limits the motor to execute and/or close the auxiliary electric appliance according to the corresponding power limiting mode according to the power limiting instruction.
The preset parameter threshold value comprises a residual electric quantity energy efficiency area value, a battery temperature threshold value and a battery temperature difference threshold value, wherein the residual electric quantity energy efficiency area value comprises: the energy efficiency control system comprises a first energy efficiency zone value, a second energy efficiency zone value, a third energy efficiency zone value and a fourth energy efficiency zone value. The battery temperature threshold includes: a first temperature threshold, a second temperature threshold, and a third temperature threshold. The cell temperature difference threshold includes: a first temperature difference threshold, a second temperature difference threshold, and a third temperature difference threshold.
If the ratio of the residual electric quantity of the battery is located in a first energy efficiency area value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off; if the ratio of the residual electric quantity of the battery is in a second energy efficiency area value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction; if the ratio of the residual electric quantity of the battery is in a third energy efficiency area value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction; if the ratio of the residual electric quantity of the battery is in a fourth energy efficiency area value, the vehicle control unit outputs a fourth power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the fourth power limit instruction. The residual electric quantity ratio of the battery is detected through the BMS management system, then the vehicle control unit presets a residual electric quantity energy efficiency area value, the vehicle control unit compares the detected residual electric quantity ratio of the battery with the residual electric quantity energy efficiency area value and outputs a corresponding power limiting instruction to the motor controller, and the vehicle control unit sets the residual electric quantity energy efficiency area value to be four energy efficiency area values so as to accurately judge the residual electric quantity of the battery. The motor controller controls the motor to execute the corresponding power limiting mode according to the corresponding power limiting instruction, so that the motor is limited by the four power limiting modes, and the loss of the battery is further reduced for the auxiliary closing electric appliance with the battery residual capacity ratio in the first energy efficiency area value, so that the automobile can be kept running for a longer time. The power consumed by the motor during operation is reduced, so that the automobile has no power supply energy quickly, and the durability of the energy efficiency management of the whole automobile is improved.
If the ratio of the remaining battery capacities is not: the vehicle control unit outputs alarm information to the display controller, and the display controller is a controller of a display in the vehicle. The display controller receives the alarm information and displays the alarm information through the display, and the alarm information displayed by the display is the information about the ultra-low battery residual capacity, so that a driver can master the battery condition in the current automobile through the alarm information and then make corresponding protective measures. And meanwhile, the vehicle control unit sends alarm information to form a power-off instruction to the BMS management system, and if the BMS management system does not reply feedback information to the vehicle control unit within the preset feedback time, the vehicle control unit controls the BMS management system to cut off the charging mode of the battery so as to prevent the damage caused by the fact that the BMS management system always controls the battery to be charged when the residual electric quantity ratio of the battery is too low, and therefore the safety management of the battery is improved.
If the battery temperature value is within a first temperature threshold value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off; if the battery temperature value is within a second temperature threshold value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction; if the battery temperature value is within a third temperature threshold value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction. Because the vehicle control unit controls the motor to still adopt full power to carry out when the battery temperature is too high, the battery temperature is easy to be higher, and the battery is easy to burn out when serious, so the vehicle control unit is located in which temperature threshold value according to the battery temperature to send the corresponding power limit instruction to the motor controller according to the battery temperature, the motor controller controls the motor to enter the corresponding power limit working mode, so as to prevent the motor from being damaged by full power execution, and guarantee the condition that the battery temperature is safe, thereby ensuring the safety performance of the whole explosion-proof vehicle.
If the battery temperature is not within the first temperature threshold, the second temperature threshold and the third temperature threshold, the vehicle control unit outputs alarm information to the display controller and sends a power-off command to the BMS. And if the vehicle control unit does not receive the feedback signal of the BMS within the preset feedback time, the vehicle control unit controls the BMS to cut off the charging mode of the battery. Detect battery temperature through BMS management system and cross when low or too high, vehicle control unit sends corresponding alarm information to display controller, display controller passes through the display and shows alarm information, so that the navigating mate can master the current situation of battery, in order to make corresponding safeguard measure, control the battery simultaneously and stop charging when BMS management system does not send feedback signal, in order to reduce because battery temperature is too high or cross still to charge and make whole car have the security performance risk excessively, thereby improve the security performance of whole explosion-proof automobile.
If the battery temperature difference value is within a first temperature difference threshold value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off; if the battery temperature difference value is within a second temperature difference threshold value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction; if the battery temperature difference value is within the third temperature difference threshold value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction. The battery temperature difference value is obtained through the BMS management system, the vehicle control unit judges which temperature threshold value the battery temperature difference value is in, then the vehicle control unit sends a corresponding power limiting instruction to the motor controller, and the motor is controlled and controlled to be executed in a corresponding power limiting mode. On the one hand, the energy of the battery is ensured to be used more durably, and on the other hand, the motor with overlarge temperature difference is prevented from executing the automobile at full power to generate safety accidents, so that the safety performance of the whole automobile is improved.
The energy efficiency management method of the explosion-proof automobile further comprises the following steps: the vehicle control unit sends the parameter value and the limited power grade to the data monitoring platform through a wireless network, wherein the battery residual capacity ratio, the battery temperature value, the battery temperature difference value and the corresponding limited power grade are mainly sent to the data monitoring platform, so that an operator can remotely master the parameter condition of a battery in the explosion-proof vehicle and the running power mode of the whole vehicle, and an accurate control instruction is sent to the vehicle control unit.
In summary, the remaining capacity, the temperature and the temperature change of the battery are related to the operation energy efficiency of the vehicle, because the BMS management system collects the ratio of the remaining capacity of the battery, the temperature value of the battery and the temperature difference value of the battery, the vehicle control unit determines which remaining capacity energy efficiency area value the ratio of the remaining capacity of the battery falls into, determines which temperature threshold value the temperature value of the battery falls into, determines which temperature threshold value the temperature difference value of the battery falls into, and then the vehicle control unit outputs a corresponding power limiting instruction to the motor controller, and the motor controller controls the motor to execute in a corresponding power limiting mode according to the power limiting instruction. The situation that the automobile is easily damaged due to the fact that the energy efficiency loss of the automobile is too fast caused by too low ratio of the residual electric quantity of the battery, too high temperature of the battery and temperature difference abnormality of the battery is reduced, and the safety performance of the explosion-proof automobile is improved.
Example two: in this embodiment, the first energy efficiency region value is 10% -20% of the remaining power ratio, the second energy efficiency region value is 20% -30% of the remaining power ratio, the third energy efficiency region value is 30% -90% of the remaining power ratio, and the fourth energy efficiency region value is 90% -98% of the remaining power ratio. If the ratio of the residual electric quantity of the battery is 10% -20%, the vehicle control unit outputs a first power limiting instruction to the motor controller, the motor controller controls the motor to enter a power limiting working mode of 60% so as to control the vehicle to operate in a 60% power mode, and meanwhile, the vehicle control unit turns off an auxiliary electric appliance, so that the energy loss of the vehicle is reduced. And if the ratio of the residual electric quantity of the battery is 20% -30%, the vehicle control unit outputs a second power limiting instruction to the motor controller, and the motor controller controls the motor to enter a power limiting working mode of 80%. If the ratio of the residual electric quantity of the battery is 30% -90%, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to enter a full-power operation mode, so that the vehicle can rapidly operate at full power under the condition that the electric quantity of the battery is sufficient. If the ratio of the residual electric quantity of the battery is between 90 and 98 percent, the whole vehicle controller prohibits energy feedback and the motor controller controls the motor to operate in a full-power working mode. The motor is controlled to enter the corresponding power limiting mode in which interval of the ratio of the residual electric quantity of the battery, so that the whole automobile is controlled to enter the corresponding power limiting mode to be executed, on one hand, the automobile can run more durably, on the other hand, the problem that the automobile has safety due to excessive energy consumption loss of the motor in running is prevented, and the safety of the explosion-proof automobile is improved.
In this embodiment, the first temperature threshold is 50-60 deg.C, the second temperature threshold is 45-50 deg.C, and the third temperature threshold is 0-45 deg.C. If the battery temperature is 50-60 ℃, the vehicle control unit outputs a first power limiting instruction to the motor controller, and the motor controller controls the motor to enter a power limiting working mode of 60%. And if the temperature of the battery is 45-50 ℃, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to enter a power limit working mode of 80%. And if the temperature of the battery is between 0 and 45 ℃, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to enter a full-power working mode. The motor is controlled to enter the corresponding power limiting working mode according to different battery temperatures so as to control the automobile to run in different power limiting modes, so that the situation that the battery temperature is higher and the battery loss is faster and then the battery is burnt out due to the fact that the battery temperature is too high and the automobile adopts the full-power working mode is avoided, the battery and the whole automobile can run stably, and the safety of the explosion-proof automobile is improved.
The cell temperature difference threshold includes: the first temperature difference threshold value is 6-8 ℃, the second temperature difference threshold value is 5-6 ℃, the third temperature difference threshold value is 0-5 ℃, if the battery temperature difference value is 6-8 ℃, the vehicle controller outputs a first power limiting instruction to the motor controller, and the motor controller controls the motor to enter a power limiting working mode of 60%; the battery temperature difference is 5-6 ℃, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to enter a power limit working mode of 80%; when the battery temperature difference is between 0 and 5 ℃, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to enter a full-power working mode. The vehicle control unit controls the output of a corresponding power limiting instruction to the motor controller according to different battery temperature differences, and the motor controller controls the motor to enter a corresponding power limiting working mode, so that the situation that the battery temperature difference is too high and the motor is still in a full-power working mode, even if the battery is damaged, the energy loss of the automobile is too fast, and the safety of the explosion-proof automobile is improved.
Example three: referring to fig. 2, an embodiment of the present invention discloses an explosion-proof vehicle energy efficiency management system, including: the system comprises a motor 500, an obtaining module 100, a comparing module 200, a control module 300 and a motor control module 400, wherein the obtaining module 100 is used for obtaining a parameter value of a battery, and the obtaining module is a BMS management system in the embodiment; the comparison module 200 is used for presetting a plurality of parameter thresholds and comparing the parameter values with the parameter thresholds to obtain a limited power grade; the whole vehicle control module is used for entering a corresponding power limit working mode according to the power limit grade and sending a corresponding power limit instruction; and the motor control module is used for receiving the power limiting instruction and controlling the motor to execute the corresponding power limiting mode according to the power limiting instruction. The parameter value of the battery is acquired by the acquisition module 100, the comparison module 200 determines which parameter threshold the parameter value falls into to obtain the limited power level, the control module 300 sends a corresponding limited power instruction to the motor control module 400 according to the limited power level, and the motor control module 400 controls the motor to enter the corresponding limited power mode. The comparison module 200 and the vehicle control module 300 are vehicle controllers, the motor control module is a motor controller, when the BMS acquires that the battery parameter changes, the vehicle controllers output corresponding power limit instructions to the motor controllers, and the motor controllers control the motors to adopt corresponding power limit modes, so that on one hand, the operation energy efficiency of the motors can be controlled and the energy efficiency of the vehicle can be controlled under the condition that the batteries are different.
The parameter values include: the battery residual capacity ratio, the battery temperature value and the battery temperature difference value; the comparison module 200 includes: a remaining power comparing submodule 210, a battery temperature comparing submodule 220, and a battery temperature difference comparing submodule 230. The remaining power comparison submodule 210 is configured to preset a plurality of remaining power energy efficiency area values, and compare the battery remaining power ratio with the plurality of remaining power energy efficiency area values to obtain a corresponding power limit level; the battery temperature comparison submodule 220 is configured to preset a plurality of battery temperature thresholds, and compare the battery temperature values with the plurality of battery temperature thresholds to obtain corresponding limited power levels; the battery temperature difference comparison submodule 230 is configured to preset a plurality of battery temperature difference thresholds, and compare the battery temperature difference values with the plurality of battery temperature difference thresholds to obtain corresponding limited power levels.
Wherein the remaining capacity energy efficiency zone value includes: the remaining power comparison sub-module 210 determines which energy efficiency zone value the remaining power ratio falls into, and outputs the corresponding power limit level. Similarly, the battery temperature threshold includes: the battery temperature comparison submodule 220 determines which temperature threshold the battery temperature falls into, and outputs a corresponding limit power level. The cell temperature difference threshold includes: a first temperature difference threshold, a second temperature difference threshold, and a third temperature threshold, and in the same way, the battery temperature difference falls into which temperature threshold, and the battery temperature difference comparison submodule 230 outputs a corresponding limit power level.
The control module 300 controls the entire vehicle control system to enter a corresponding power limit working mode according to the power limit levels output by the remaining capacity comparison submodule 210, the battery temperature comparison submodule 220 and the battery temperature difference comparison submodule 230 so as to improve the safety performance of the entire battery.
Specifically, please refer to the first and second embodiments for the working method of the energy efficiency management system of the explosion-proof vehicle, which is not described herein again.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. An energy efficiency management method for an explosion-proof automobile is characterized by comprising the following steps:
the BMS acquires the parameter value of the battery and uploads the parameter value to the whole vehicle controller through the CAN;
the vehicle control unit presets a plurality of parameter thresholds, and compares the parameter values with the parameter thresholds to obtain a limited power grade;
the vehicle control unit executes a corresponding power limiting working mode according to the power limiting grade and sends a power limiting instruction to the motor controller according to the power limiting working mode;
and the motor controller controls the motor to execute and/or close the auxiliary electric appliance in a corresponding power limiting mode according to the power limiting instruction.
2. The energy efficiency management method for the explosion-proof automobile according to claim 1, wherein the parameter values comprise: the battery residual capacity ratio, the battery temperature value and the battery temperature difference value.
3. The energy efficiency management method for the explosion-proof automobile according to claim 2, wherein the parameter threshold comprises: a remaining power energy efficiency zone value, a battery temperature threshold value, and a battery temperature difference threshold value.
4. The energy efficiency management method for the explosion-proof automobile according to claim 3, wherein the remaining capacity energy efficiency zone value comprises: the first energy efficiency area value, the second energy efficiency area value, the third energy efficiency area value and the fourth energy efficiency area value;
if the ratio of the residual electric quantity of the battery is in a first energy efficiency area value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off;
if the ratio of the residual electric quantity of the battery is in a second energy efficiency area value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction;
if the ratio of the residual electric quantity of the battery is in a third energy efficiency area value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction;
and if the ratio of the residual electric quantity of the battery is in a fourth energy efficiency area value, the vehicle control unit outputs a fourth power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the fourth power limit instruction.
5. The energy efficiency management method for the explosion-proof automobile according to claim 3, wherein the battery temperature threshold value comprises: a first temperature threshold, a second temperature threshold, and a third temperature threshold;
if the battery temperature value is within a first temperature threshold value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off;
if the battery temperature value is within a second temperature threshold value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction;
and if the battery temperature value is within a third temperature threshold value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction.
6. The energy efficiency management method for the explosion-proof automobile according to claim 3, wherein the battery temperature difference threshold value comprises: a first temperature difference threshold, a second temperature difference threshold, and a third temperature difference threshold;
if the battery temperature difference value is within a first temperature difference threshold value, the vehicle control unit outputs a first power limit instruction to the motor controller, the motor controller controls the motor to execute in a first power limit mode according to the first power limit instruction, and the vehicle control unit controls the auxiliary electric appliance to be turned off;
if the battery temperature difference value is within a second temperature difference threshold value, the vehicle control unit outputs a second power limit instruction to the motor controller, and the motor controller controls the motor to execute in a second power limit mode according to the second power limit instruction;
and if the battery temperature difference value is within a third temperature difference threshold value, the vehicle control unit outputs a third power limit instruction to the motor controller, and the motor controller controls the motor to execute in a third power limit mode according to the third power limit instruction.
7. The energy efficiency management method for the explosion-proof automobile according to claim 3, characterized in that if the remaining capacity is not within the remaining capacity energy efficiency area value and/or the battery temperature is not within the battery temperature threshold and/or the battery temperature difference is not within the battery temperature difference threshold;
the vehicle control unit outputs alarm information to a display controller and sends a power-off instruction to the BMS management system;
if the vehicle control unit does not receive the feedback signal of the BMS within the preset feedback time, the vehicle control unit sends a power-off command to the BMS, and the BMS cuts off the charging mode of the battery according to the power-off command.
8. The energy efficiency management method for the explosion-proof automobile according to claim 1, further comprising:
and the vehicle control unit sends the parameter value and the limited power grade to a data monitoring platform through a wireless network.
9. An explosion-proof vehicle energy efficiency management system, comprising:
a motor;
the acquisition module is used for acquiring the parameter value of the battery;
the comparison module is used for presetting a plurality of parameter thresholds and comparing the parameter values with the parameter thresholds to obtain a limited power grade;
the whole vehicle control module is used for entering a corresponding power limiting working mode according to the power limiting grade and sending a corresponding power limiting instruction;
and the motor control module is used for receiving the power limiting instruction and controlling the motor to execute a corresponding power limiting mode according to the power limiting instruction.
10. The explosion-proof vehicle energy efficiency management system according to claim 9, wherein the parameter values include: the battery residual capacity ratio, the battery temperature value and the battery temperature difference value;
the comparison module comprises: the residual electric quantity comparison submodule is used for presetting a plurality of residual electric quantity energy efficiency zone values and comparing the battery residual electric quantity ratio with the plurality of residual electric quantity energy efficiency zone values to obtain a corresponding power limit grade;
the battery temperature comparison submodule is used for presetting a plurality of battery temperature thresholds and comparing the battery temperature values with the battery temperature thresholds to obtain corresponding limited power grades;
and the battery temperature difference comparison submodule is used for presetting a plurality of battery temperature difference thresholds and comparing the battery temperature difference values with the battery temperature difference thresholds to obtain corresponding limited power grades.
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