CN107031435A - Control method, equipment and the system of the travel speed of electric vehicle - Google Patents
Control method, equipment and the system of the travel speed of electric vehicle Download PDFInfo
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- CN107031435A CN107031435A CN201710035141.0A CN201710035141A CN107031435A CN 107031435 A CN107031435 A CN 107031435A CN 201710035141 A CN201710035141 A CN 201710035141A CN 107031435 A CN107031435 A CN 107031435A
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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
- B60L15/28—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 without contact making and breaking, e.g. using a transductor
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- 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
-
- 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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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a kind of method, equipment and the system of the travel speed of control electric vehicle, it is related to controlling technology of velocity field.Methods described includes：The status information of the battery of electric vehicle is obtained in real time, and the status information includes battery terminal voltage, battery temperature, battery discharge current and internal resistance of cell information；The state-of-charge of the battery is determined according to the status information；The travel speed of the electric vehicle is controlled according to the state-of-charge and threshold set set in advance, the threshold set includes parking threshold value, state-of-charge threshold value and the threshold speed corresponding with the state-of-charge threshold value, and the parking threshold value is more than 0.The damage caused present invention, avoiding discharging completely to battery, improves the service life of battery, reduces the maintenance cost of battery.
Description
Technical field
The present invention, on controlling technology of velocity field, is concretely a kind of side for the travel speed for controlling electric vehicle
Method, equipment and system.
Background technology
This part is it is intended that the embodiments of the present invention stated in claims provide background or context.Herein
Description recognizes it is prior art not because not being included in this part.
In face of the energy shortage being on the rise and environmental degradation problem, new energy electric motor vehicle turns into current most promising
One of the vehicles.High-power power battery is originated as the energy of pure electric vehicle, is played in vehicle travel process to pass
Important effect.But, the electrokinetic cell (such as lead-acid battery, Ni-MH battery, nickel-cadmium cell, lithium ion battery) currently commonly used
There is electricity in use and cross the problem of putting, especially the high current in the state of electricity is relatively low, which is crossed, puts, and this can lead
Actuating power battery performance rapid decrease, causes the electrokinetic cell life-span to be damaged.Therefore, it is right in order to improve the service life of electric car
The research that the anti-mistake of electrokinetic cell is put increasingly gets more and more people's extensive concerning.
There is the scheme that the anti-mistake of a variety of electrokinetic cells is put in the prior art, such as patent document CN102958740A is disclosed
A kind of electric vehicle and its control method, which describe following technical scheme：As SOC (State of Charge, state-of-charge)
It is low arrive a certain threshold value when, limit electric vehicle upper limit speed, with SOC decline, upper limit speed periodically declines.By
This, electrokinetic cell can be solved to a certain extent and cross the problem of putting.But, above-mentioned technical proposal, which does not have, thoroughly solves electricity
The problem of pond is discharged completely (when SOC is reduced to zero, speed causes damage in the case of being reduced to zero to electrokinetic cell performance), enters
And influence the service life of battery.
Therefore, the anti-mistake problem of putting for how researching and developing out a kind of new scheme thoroughly to solve electrokinetic cell is ability
Domain technical barrier urgently to be resolved hurrily.
The content of the invention
In view of this, the invention provides a kind of method and equipment of the travel speed of control electric vehicle, it is to avoid
Discharge completely the damage caused to battery, improve the service life of battery, reduce the maintenance cost of battery.
To achieve these goals, the present invention provides a kind of method for the travel speed for controlling electric vehicle, methods described
Including：
The status information of the battery of electric vehicle is obtained in real time, and the status information includes battery terminal voltage, battery temperature
Degree, battery discharge current and internal resistance of cell information；
The state-of-charge of the battery is determined according to the status information；
The travel speed of the electric vehicle is controlled according to the state-of-charge and threshold set set in advance,
The threshold set includes parking threshold value, state-of-charge threshold value and the threshold speed corresponding with the state-of-charge threshold value, institute
State parking threshold value and be more than 0.
It is an object of the invention to provide a kind of equipment of the travel speed of control electric vehicle, the equipment bag
Include：
State information acquisition device, the status information of the battery for obtaining electric vehicle in real time, the status information
Including battery terminal voltage, battery temperature, battery discharge current and internal resistance of cell information；
State-of-charge determining device, the state-of-charge for determining the battery according to the status information；
Travel speed control device, for according to the state-of-charge and threshold set set in advance to the electric car
Travel speed be controlled, the threshold set include parking threshold value, state-of-charge threshold value and with the state-of-charge threshold
The corresponding threshold speed of value, the parking threshold value is more than 0.
It is an object of the invention to provide a kind of system of the travel speed of control electric vehicle, the system bag
Electric vehicle and background server are included, the electric vehicle includes battery and controls setting for the travel speed of electric vehicle
It is standby；
The equipment of the travel speed of the control electric vehicle includes：State information acquisition device, for obtaining institute in real time
The status information of battery is stated, the status information is included in battery terminal voltage, battery temperature, battery discharge current and battery
Hinder information；
State-of-charge determining device, the state-of-charge for determining the battery according to the status information；
Travel speed control device, for according to the state-of-charge and threshold set set in advance to the electric car
Travel speed be controlled, the threshold set include parking threshold value, state-of-charge threshold value and with the state-of-charge threshold
The corresponding threshold speed of value, the parking threshold value is more than 0.
The beneficial effects of the present invention are there is provided a kind of method of travel speed for controlling electric vehicle, equipment and
System, it is to avoid the complete damage caused to battery of discharging, improves the service life of battery, reduce the maintenance of battery into
This, realizes and changes default parameter threshold according to different running environments and/or traveling road conditions, improve Consumer's Experience.
For the above and other objects, features and advantages of the present invention can be become apparent, preferred embodiment cited below particularly,
And coordinate institute's accompanying drawings, it is described in detail below.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of embodiment one of the method for the travel speed of control electric vehicle provided in an embodiment of the present invention
Flow chart；
Fig. 2 be Fig. 1 in step S103 flow chart；
Fig. 3 be Fig. 2 in step S205 flow chart；
Fig. 4 is a kind of embodiment two of the method for the travel speed of control electric vehicle provided in an embodiment of the present invention
Flow chart；
Fig. 5 is a kind of structural representation of the system of the travel speed of control electric vehicle provided in an embodiment of the present invention；
Fig. 6 controls for travel speed in a kind of equipment of the travel speed of control electric vehicle provided in an embodiment of the present invention
The structured flowchart of device travel speed control device；
Fig. 7 is the 3rd setup module in a kind of equipment of the travel speed of control electric vehicle provided in an embodiment of the present invention
Structured flowchart；
Fig. 8 is a kind of structured flowchart of the equipment of the travel speed of control electric vehicle provided in an embodiment of the present invention；
Fig. 9 is state-of-charge threshold value sequence schematic diagram in the specific embodiment of the present invention；
Figure 10 is the determination schematic diagram of state-of-charge in specific embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Art technology technical staff knows, embodiments of the present invention can be implemented as a kind of system, device, equipment,
Method or computer program product.Therefore, the disclosure can be implemented as following form, i.e.,：It is complete hardware, complete soft
Part (including firmware, resident software, microcode etc.), or the form that hardware and software is combined.
The invention provides a kind of method, equipment and the system of the travel speed of control electric vehicle, below with reference to this
The principle and spirit of some representative embodiments of invention, in detail the explaination present invention.
Fig. 1 is a kind of particular flow sheet of the method for the travel speed of control electric vehicle proposed by the present invention, is referred to
Fig. 1, described method includes：
S101：The status information of the battery of electric vehicle is obtained in real time, and the status information includes battery terminal voltage, electricity
Pond temperature, battery discharge current and internal resistance of cell information.In a particular embodiment, can be every certain time interval
(such as 1 second) obtains the status information of battery.Battery is rechargeable electricity storage element, typically by plumbic acid electricity
The secondary electricity composition such as pond, lithium ion battery or ni-mh, or, can also be by the electricity beyond the secondary cells such as double charge layer capacitor
Power storage element is constituted.
S102：The state-of-charge of the battery is determined according to the status information.
State-of-charge SOC is the percentage from 0% (sky) to 100% (full), and the percentage represents the energy in battery
Amount, be one of important parameter of battery status, foundation provided for the control strategy of whole electric vehicle.Accurate estimation present battery
Residual capacity, it is ensured that SOC maintains rational scope, prevents from overcharging or crosses battery of being rivals in a contest and cause damage, be it is reasonable using battery,
Battery is improved, reduction maintenance cost provides technique direction.
S103：The travel speed of the electric vehicle is carried out according to the state-of-charge and threshold set set in advance
Control, in a particular embodiment, threshold set set in advance include parking threshold value, state-of-charge threshold value and with the lotus
The corresponding threshold speed of electricity condition threshold value, the parking threshold value is more than 0.
In the embodiment of the application, the number of the state-of-charge threshold value is one or more, with charged shape
The number of the corresponding threshold speed of state threshold value is also to be one or more.
Specifically, in embodiment 1, if the number of state-of-charge threshold value is one, i.e. S1, corresponding threshold speed is
V1, S1, V1 concrete numerical value can take different numerical value according to different actual use situations, such as S1 be 20%, V1 be 40 kilometers/
Hour.
In example 2, if the number of state-of-charge threshold value be 2, i.e. S1, S2, corresponding threshold speed be V1, V2,
S1, S2, V1, V2 concrete numerical value can take different numerical value according to different actual use situations, and such as S1 is that 20%, S2 is
12%, V1 are 40 kilometers/hour, and V2 is 20 kilometers/hour.
Certainly in the other embodiments of the application, the number of state-of-charge threshold value is can be also n, i.e. S1, S2 ... Sn,
Corresponding threshold speed is V1, V2 ... Vn, and n herein is natural number.
Fig. 2 is step S103 flow chart, referring to Fig. 2, the step includes：
S201：By the state-of-charge threshold value according to sorting from big to small.In a particular embodiment, if state-of-charge threshold value
Number be n, i.e. S1, S2 ... Sn, corresponding threshold speed is V1, V2 ... Vn, and n herein is natural number.It is located at the reality
Apply in example, the order after sorting from big to small is S1, S2 ... Sn, as shown in Figure 9.The threshold value S0 that stops is such as 8%.
S202：Adjacent state-of-charge threshold value composition threshold interval after sequence, the end points of the threshold interval is adjacent
State-of-charge threshold value, is referred to as first threshold and Second Threshold, and the first threshold is more than the Second Threshold.
In embodiment as shown in Figure 9, threshold interval include S1-S2 ... Sn-1-Sn、Sn-S0.For Sn-1- Sn and
Speech, first threshold is Sn-1, Second Threshold is Sn, and S0 herein is parking threshold value.
S203：When the state-of-charge is equal to the state-of-charge threshold value, the highest traveling of the electric vehicle is set
Speed is the corresponding threshold speed of the state-of-charge threshold value.The state-of-charge drawn such as step S102 is exactly equal to state-of-charge
S1, S2 ... Sn in threshold value, such as Fig. 9, then the corresponding threshold speed of the state-of-charge is V1, V2 ... Vn.
S204：When the state-of-charge is equal to the parking threshold value, the maximum travel speed of the electric vehicle is set
For 0.
The purpose that the parking threshold value S0 that the present invention is set is more than 0 is, when SOC is reduced to when S0 forces parking in battery
Dump energy be not 0, it is to avoid the complete damage caused to battery of discharging, improve the service life of battery, reduce electricity
The maintenance cost in pond.
S205：When the state-of-charge is less than the first threshold and is more than the Second Threshold, according to the threshold value
The travel speed of the collection control electric vehicle.When state-of-charge is between Sn-1, it is necessary to be controlled to go according to the step when in the middle of-Sn
Sail speed.
Fig. 3 is step S205 flow chart, referring to Fig. 3, the step includes：
S301：Obtain the relational expression of state-of-charge set in advance and maximum travelling speed；
S302：The corresponding maximum traveling speed of the state-of-charge is determined according to the state-of-charge and the relational expression
Degree, is set to the maximum travel speed of the electric vehicle.
15. i.e. when state-of-charge is between Sn-1When in the middle of-Sn, as shown in Figure 10, if state-of-charge is the S in Figure 10, then S
Corresponding maximum travelling speed depends on relational expression set in advance.In a particular embodiment of the present invention, state-of-charge with most
The relational expression of big travel speed can be at least one of quadratic function, cubic function, higher-order function and linear function.Specifically
, can be the linear relationship shown in Figure 10, or other non-linear relations, the relational expression of different threshold intervals can be identical
Or it is different.
Such as in a specific embodiment, the relational expression of different threshold intervals be respectively Different Slope linear relationship or
Different non-linear relations.
In another specific embodiment, the relational expression of a threshold interval is such as to set all charged of the threshold interval
The corresponding velocity amplitude of state is First Speed threshold value or second speed threshold value.
Fig. 4 is a kind of embodiment two of the method for the travel speed of control electric vehicle provided in an embodiment of the present invention
Flow chart, referring to Fig. 4, in embodiment two, this method includes：
S401：The status information of the battery of electric vehicle is obtained in real time, and the status information includes battery terminal voltage, electricity
Pond temperature, battery discharge current and internal resistance of cell information.In a particular embodiment, can be every certain time interval
(such as 1 second) obtains the status information of battery.
S402：The state-of-charge of the battery is determined according to the status information.
S403：The travel speed of the electric vehicle is carried out according to the state-of-charge and threshold set set in advance
Control, in a particular embodiment, threshold set set in advance include parking threshold value, state-of-charge threshold value and with the lotus
The corresponding threshold speed of electricity condition threshold value, the parking threshold value is more than 0.
S404：Amended threshold set is determined according to the running environment of the electric vehicle and/or traveling road conditions.
Threshold set can be set before electric car dispatches from the factory, can also be after a period of time is driven, and user is according to traveling ring
Border (winter or summer) or traveling road conditions (level road or hill path) are modified by feedback, and user determines amended threshold value
Collection, background server sends parameter modification instruction to vehicle according to the amended threshold set and modified.
As above it is a kind of method for the travel speed of control electric vehicle that the present invention is provided, it is to avoid complete electric discharge pair
The damage that battery is caused, improves the service life of battery, reduces the maintenance cost of battery, realizes according to different travelings
Environment and/or traveling road conditions change default parameter threshold, improve Consumer's Experience.
It should be noted that although the operation of the inventive method is described with particular order in the accompanying drawings, this is not required that
Or imply that these must be performed according to the particular order operates, or the operation having to carry out shown in whole could realize the phase
The result of prestige.Additionally or alternatively, it is convenient to omit some steps, multiple steps are merged into a step execution, and/or will
One step is decomposed into execution of multiple steps.
After the method for exemplary embodiment of the invention is described, next, refer to the attached drawing is exemplary to the present invention
The equipment of embodiment is introduced.The implementation of the equipment may refer to the implementation of the above method, repeats part and repeats no more.With
Term " module " and " unit ", can be the software and/or hardware for realizing predetermined function used in lower.Although following examples
Described module is preferably realized with software, but hardware, or the combination of software and hardware realization be also may be simultaneously
It is contemplated.
Fig. 5 is a kind of structural representation of the system of the travel speed of control electric vehicle provided in an embodiment of the present invention,
Referring to Fig. 5, the system includes electric vehicle and background server, the electric vehicle includes battery and control electricity
The equipment of the travel speed of motor-car, the equipment includes：
State information acquisition device 101, the status information of the battery for obtaining electric vehicle in real time, the state letter
Breath includes battery terminal voltage, battery temperature, battery discharge current and internal resistance of cell information.In a particular embodiment, may be used
To obtain the status information of battery every certain time interval (such as 1 second).Battery is rechargeable electricity storage member
Part, is typically made up of the secondary electricity such as lead-acid battery, lithium ion battery or ni-mh, or, can also be by double charge layer capacitor
Power storage element beyond the secondary cells such as device is constituted.
State-of-charge determining device 102, the state-of-charge for determining the battery according to the status information.
State-of-charge SOC is the percentage from 0% (sky) to 100% (full), and the percentage represents the energy in battery
Amount, be one of important parameter of battery status, foundation provided for the control strategy of whole electric vehicle.Accurate estimation present battery
Residual capacity, it is ensured that SOC maintains rational scope, prevents from overcharging or crosses battery of being rivals in a contest and cause damage, be it is reasonable using battery,
Battery is improved, reduction maintenance cost provides technique direction.
Travel speed control device 103, for according to the state-of-charge and threshold set set in advance to the electricity
The travel speed of motor-car is controlled, in a particular embodiment, and threshold set set in advance includes parking threshold value, charged
State threshold and the threshold speed corresponding with the state-of-charge threshold value, the parking threshold value are more than 0.
In the embodiment of the application, the number of the state-of-charge threshold value is one or more, with charged shape
The number of the corresponding threshold speed of state threshold value is also to be one or more.
Specifically, in embodiment 1, if the number of state-of-charge threshold value is one, i.e. S1, corresponding threshold speed is
V1, S1, V1 concrete numerical value can take different numerical value according to different actual use situations, such as S1 be 20%, V1 be 40 kilometers/
Hour.
In example 2, if the number of state-of-charge threshold value be 2, i.e. S1, S2, corresponding threshold speed be V1, V2,
S1, S2, V1, V2 concrete numerical value can take different numerical value according to different actual use situations, and such as S1 is that 20%, S2 is
12%, V1 are 40 kilometers/hour, and V2 is 20 kilometers/hour.
Certainly in the other embodiments of the application, the number of state-of-charge threshold value is can be also n, i.e. S1, S2 ... Sn,
Corresponding threshold speed is V1, V2 ... Vn, and n herein is natural number.
Fig. 6 controls for travel speed in a kind of equipment of the travel speed of control electric vehicle provided in an embodiment of the present invention
The structured flowchart of device travel speed control device, referring to Fig. 6, travel speed control device 103 includes：
Threshold value order module 201, for by the state-of-charge threshold value according to sorting from big to small.In specific embodiment
In, if the number of state-of-charge threshold value is n, i.e. S1, S2 ... Sn, corresponding threshold speed is V1, V2 ... Vn, n herein
For natural number.If the order after in this embodiment, sorting from big to small is S1, S2 ... Sn, as shown in Figure 9.S0 herein
For parking threshold value, parking threshold value S0 is such as 8%.
Interval generation module 202, adjacent state-of-charge threshold value composition threshold interval, the end of the threshold interval after sequence
Point is adjacent state-of-charge threshold value, is referred to as first threshold and Second Threshold, and the first threshold is more than described second
Threshold value.In embodiment as shown in Figure 9, threshold interval include S1-S2 ... Sn-1-Sn、Sn-S0.For Sn-1For-Sn,
First threshold is Sn-1, Second Threshold is Sn.
First setup module 203, for when the state-of-charge is equal to the state-of-charge threshold value, setting described electronic
The maximum travel speed of vehicle is the corresponding threshold speed of the state-of-charge threshold value.As state-of-charge is exactly equal to state-of-charge
S1, S2 ... Sn in threshold value, such as Fig. 9, then the corresponding threshold speed of the state-of-charge is V1, V2 ... Vn.
Second setup module 204, for when the state-of-charge is equal to the parking threshold value, setting the electric vehicle
Maximum travel speed be 0.
The purpose that the parking threshold value S0 that the present invention is set is more than 0 is, when SOC is reduced to when S0 forces parking in battery
Dump energy be not 0, it is to avoid the complete damage caused to battery of discharging, improve the service life of battery, reduce electricity
The maintenance cost in pond.
3rd setup module 205, for being less than the first threshold and more than the Second Threshold when the state-of-charge
When, the travel speed of the electric vehicle is controlled according to the threshold set.When state-of-charge is between Sn-1When in the middle of-Sn, it is necessary to
Travel speed is controlled according to the step.
Fig. 7 is the 3rd setup module in a kind of equipment of the travel speed of control electric vehicle provided in an embodiment of the present invention
Structured flowchart, referring to Fig. 7, the 3rd setup module 205 includes：
Relational expression acquiring unit 301, the relational expression for obtaining state-of-charge set in advance and maximum travelling speed；
Travel speed determining unit 302, for determining the charged shape according to the state-of-charge and the relational expression
The corresponding maximum travelling speed of state, is set to the maximum travel speed of the electric vehicle.
I.e. when state-of-charge is between Sn-1When in the middle of-Sn, as shown in Figure 10, if state-of-charge is the S in Figure 10, then S couples
The maximum travelling speed answered depends on relational expression set in advance.In a particular embodiment of the present invention, state-of-charge and maximum
The relational expression of travel speed can be at least one of quadratic function, cubic function, higher-order function and linear function.Specifically,
Can be the linear relationship shown in Figure 10, or other non-linear relations, the relational expression of different threshold interval can be identical or
Difference, here is omitted.
Such as in a specific embodiment, the relational expression of different threshold intervals be respectively Different Slope linear relationship or
Different non-linear relations.
In another specific embodiment, the relational expression of a threshold interval is such as to set all charged of the threshold interval
The corresponding velocity amplitude of state is First Speed threshold value or second speed threshold value.
Fig. 8 is a kind of structured flowchart of the equipment of the travel speed of control electric vehicle provided in an embodiment of the present invention, please
Refering to Fig. 8, the equipment also includes：
Parameter determining device 104 is changed, determines to repair for the running environment according to the electric vehicle and/or traveling road conditions
Threshold set after changing.
The background server, for the threshold set of the electric vehicle to be set into amended threshold set.
Threshold set can be set before electric car dispatches from the factory, can also be after a period of time is driven, and user is according to traveling ring
Border (winter or summer) or traveling road conditions (level road or hill path) are modified by feedback, and user determines amended threshold value
Collection, background server sends parameter modification instruction to vehicle according to the amended threshold set and modified.
Although in addition, be referred to some unit modules of system in above-detailed, this division is only simultaneously
Non-imposed.In fact, according to the embodiment of the present invention, the feature and function of two or more above-described units can
To embody in a unit.Equally, the feature and function of an above-described unit can also be further divided into by
Multiple units embody.
In summary, the invention provides a kind of method, equipment and the system of the travel speed of control electric vehicle, keep away
The complete damage discharged and caused to battery is exempted from, has improved the service life of battery, reduce the maintenance cost of battery, realize
Default parameter threshold is changed according to different running environments and/or traveling road conditions, Consumer's Experience is improved.
For the improvement of a technology, can clearly to distinguish be improvement on hardware (for example, to diode, crystal
Pipe, switch etc. circuit structure improvement) or software on improvement (for the improvement of method flow).However, with technology
Development, the improvement of current many method flows can be considered as directly improving for hardware circuit.Designer is almost
All corresponding hardware circuit is obtained by the way that improved method flow is programmed into hardware circuit.Therefore, it cannot be said that one
The improvement of individual method flow cannot be realized with hardware entities module.For example, PLD (Programmable
Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate Array, FPGA)) just
It is such a integrated circuit, its logic function is determined by user to device programming.By designer is voluntarily programmed Lai one
Individual digital display circuit " integrated " is on a piece of PLD, without asking chip maker to design and make special integrated circuit
Chip 2.Moreover, nowadays, substitution manually makes IC chip, and " logic compiler is also used in this programming instead mostly
(logic compiler) " softwares realize that software compiler used is similar when it writes with program development, and to compile
Also handy specific programming language is write for source code before, and this is referred to as hardware description language (Hardware
Description Language, HDL), and HDL is also not only a kind of, but have many kinds, such as ABEL (Advanced
Boolean Expression Language)、AHDL(Altera Hardware Description Language)、
Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL(Java
Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware
Description Language) etc., VHDL (Very-High-Speed Integrated are most generally used at present
Circuit Hardware Description Language) and Verilog2.Those skilled in the art also will be apparent to the skilled artisan that only
Need method flow slightly programming in logic and being programmed into integrated circuit with above-mentioned several hardware description languages, it is possible to hold very much
The hardware circuit of the easy accomplished logical method flow.
Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing
Device and storage can by the computer of the computer readable program code (such as software or firmware) of (micro-) computing device
Read medium, gate, switch, application specific integrated circuit (Application Specific Integrated Circuit,
ASIC), the form of programmable logic controller (PLC) and embedded microcontroller, the example of controller includes but is not limited to following microcontroller
Device：ARC625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, are deposited
Memory controller is also implemented as a part for the control logic of memory.
It is also known in the art that in addition to realizing controller in pure computer readable program code mode, it is complete
Controller can be caused with gate, switch, application specific integrated circuit, programmable by the way that method and step is carried out into programming in logic entirely
Logic controller realizes identical function with the form of embedded microcontroller etc..Therefore this controller is considered one kind
Hardware component, and the structure in hardware component can also be considered as to the device for realizing various functions included in it.Or
Even, it not only can be able to will be the software module of implementation method for realizing that the device of various functions is considered as but also can be Hardware Subdivision
Structure in part.
System, device, module or unit that above-described embodiment is illustrated, can specifically be realized by computer chip or entity,
Or realized by the product with certain function.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Understood based on such, the technical scheme essence of the application
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are to cause a computer equipment
(can be personal computer, server, or network equipment etc.) performs some of each embodiment of the application or embodiment
Method described in part.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
The application can be used in numerous general or special purpose computing system environments or configuration.For example：Personal computer, clothes
Business device computer, handheld device or portable set, laptop device, multicomputer system, the system based on microprocessor, put
Top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer including any of the above system or equipment
DCE etc..
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these DCEs, by
Remote processing devices connected by communication network perform task.In a distributed computing environment, program module can be with
Positioned at including in the local and remote computer-readable storage medium including storage device.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changed without departing from the application's
Spirit.
Claims (14)
1. a kind of method of the travel speed of control electric vehicle, it is characterized in that, methods described includes：
The status information of the battery of electric vehicle is obtained in real time, and the status information includes battery terminal voltage, battery temperature, electricity
Tank discharge electric current and internal resistance of cell information；
The state-of-charge of the battery is determined according to the status information；
The travel speed of the electric vehicle is controlled according to the state-of-charge and threshold set set in advance, it is described
Threshold set includes parking threshold value, state-of-charge threshold value and the threshold speed corresponding with the state-of-charge threshold value, described to stop
Car threshold value is more than 0.
2. according to the method described in claim 1, it is characterized in that, the number of the state-of-charge threshold value is one or more.
3. method according to claim 2, it is characterized in that, according to the state-of-charge and threshold set pair set in advance
The travel speed of the electric vehicle be controlled including：
By the state-of-charge threshold value according to sorting from big to small；
Adjacent state-of-charge threshold value composition threshold interval after sequence, the end points of the threshold interval is adjacent state-of-charge threshold
Value, is referred to as first threshold and Second Threshold, and the first threshold is more than the Second Threshold；
When the state-of-charge is equal to the state-of-charge threshold value, it is described to set the maximum travel speed of the electric vehicle
The corresponding threshold speed of state-of-charge threshold value；
When the state-of-charge is equal to the parking threshold value, the maximum travel speed for setting the electric vehicle is 0；
When the state-of-charge is less than the first threshold and is more than the Second Threshold, according to threshold set control
The travel speed of electric vehicle.
4. method according to claim 3, it is characterized in that, the traveling speed of the electric vehicle is controlled according to the threshold set
Degree includes：
Obtain the relational expression of state-of-charge set in advance and maximum travelling speed；
The corresponding maximum travelling speed of the state-of-charge is determined according to the state-of-charge and the relational expression, institute is set to
State the maximum travel speed of electric vehicle.
5. method according to claim 4, it is characterized in that, the relational expression is quadratic function, cubic function, higher-order function
At least one of with linear function.
6. the method according to claim 2 or 4, it is characterized in that, methods described also includes：
Amended threshold set is determined according to the running environment of the electric vehicle and/or traveling road conditions.
7. a kind of equipment of the travel speed of control electric vehicle, it is characterized in that, the equipment includes：
State information acquisition device, the status information of the battery for obtaining electric vehicle in real time, the status information includes
Battery terminal voltage, battery temperature, battery discharge current and internal resistance of cell information；
State-of-charge determining device, the state-of-charge for determining the battery according to the status information；
Travel speed control device, for according to the state-of-charge and threshold set set in advance to the electric vehicle
Travel speed is controlled, the threshold set include parking threshold value, state-of-charge threshold value and with the state-of-charge threshold value phase
Corresponding threshold speed, the parking threshold value is more than 0.
8. equipment according to claim 7, it is characterized in that, the number of the state-of-charge threshold value is one or more.
9. equipment according to claim 8, it is characterized in that, the travel speed control device includes：
Threshold value order module, for by the state-of-charge threshold value according to sorting from big to small；
Interval generation module, adjacent state-of-charge threshold value composition threshold interval after sequence, the end points of the threshold interval is phase
Adjacent state-of-charge threshold value, is referred to as first threshold and Second Threshold, and the first threshold is more than the Second Threshold；
First setup module, for when the state-of-charge is equal to the state-of-charge threshold value, setting the electric vehicle
Maximum travel speed is the corresponding threshold speed of the state-of-charge threshold value；
Second setup module, for when the state-of-charge is equal to the parking threshold value, setting the highest of the electric vehicle
Travel speed is 0；
3rd setup module, for when the state-of-charge be less than the first threshold and more than the Second Threshold when, according to
The threshold set controls the travel speed of the electric vehicle.
10. equipment according to claim 9, it is characterized in that, the 3rd setup module includes：
Relational expression acquiring unit, the relational expression for obtaining state-of-charge set in advance and maximum travelling speed；
Travel speed determining unit, for determining that the state-of-charge is corresponding according to the state-of-charge and the relational expression
Maximum travelling speed, is set to the maximum travel speed of the electric vehicle.
11. equipment according to claim 10, it is characterized in that, the relational expression be quadratic function and/or cubic function and/
Or higher-order function and/or linear function.
12. the equipment according to claim 8 or 10, it is characterized in that, the equipment also includes：
Parameter determining device is changed, is determined for the running environment according to the electric vehicle and/or traveling road conditions amended
Threshold set.
13. a kind of system of the travel speed of control electric vehicle, it is characterized in that, the system includes electric vehicle and backstage
Server；
The electric vehicle includes the traveling of battery and the control electric vehicle as described in claim 7 to 12 any one
The equipment of speed；
The equipment of the travel speed of the control electric vehicle includes：State information acquisition device, for obtaining the storage in real time
The status information of battery, the status information includes battery terminal voltage, battery temperature, battery discharge current and internal resistance of cell letter
Breath；
State-of-charge determining device, the state-of-charge for determining the battery according to the status information；
Travel speed control device, for according to the state-of-charge and threshold set set in advance to the electric vehicle
Travel speed is controlled, the threshold set include parking threshold value, state-of-charge threshold value and with the state-of-charge threshold value phase
Corresponding threshold speed, the parking threshold value is more than 0.
14. system according to claim 13, it is characterized in that, the equipment of the travel speed of the control electric vehicle is also wrapped
Modification parameter determining device is included, amended threshold is determined for the running environment according to the electric vehicle and/or traveling road conditions
Value collection；
The background server, for the threshold set of the electric vehicle to be set into amended threshold set.
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| CN201710035141.0A CN107031435A (en) | 2017-01-17 | 2017-01-17 | Control method, equipment and the system of the travel speed of electric vehicle |
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