CN109532561A - Dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state - Google Patents
Dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state Download PDFInfo
- Publication number
- CN109532561A CN109532561A CN201811609700.5A CN201811609700A CN109532561A CN 109532561 A CN109532561 A CN 109532561A CN 201811609700 A CN201811609700 A CN 201811609700A CN 109532561 A CN109532561 A CN 109532561A
- Authority
- CN
- China
- Prior art keywords
- load shedding
- value
- current
- controller
- dynamical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention belongs to electrical vehicular power design field, the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state is related generally to.Dynamical system load shedding control method under the four-wheel low-speed electronic vehicle low battery state of proposition is according to load shedding control strategy, control the corresponding consumption electric current of electric machine controller, when battery electric quantity is lower than setting value, into load shedding control interval, the relationship selection control between maximum cut-off current issued according to the corresponding controller consumption pre-set current value of load shedding control interval and BMS consumes current value, obtain final power controller consumption current value, the current value of electric machine controller control consumption exports corresponding dynamical system torque, realizes vehicle dynamic Control.The present invention uses load shedding control strategy, ensure that under low battery state, and battery pack low-power stablizes output, and vehicle performance can also maintain to stablize output；Speed needed for existing basic operation function has again uses required climbing capacity substantially.
Description
Technical field
The invention belongs to electrical vehicular power design fields, relate generally to a kind of four-wheel low-speed electronic vehicle low battery state
Under dynamical system load shedding control method.
Background technique
Using electric energy as drive energy, power controller is controlled from battery acquisition power, battery discharge four-wheel low-speed electronic vehicle,
Motor obtains electrical power from power controller, and motor output mechanical energy, Motor torque is in the same direction with revolving speed, motor pushing vehicle；When
When battery capacity deficiency, the power output of power controller can also be affected therewith, and different control strategies can generate difference
User experience.
Battery is by BMS(battery management system) management, battery electric quantity state (SOC value) and subsequent time battery pack
The maximum current value (SOP table) that can be exported is issued by BMS by CAN protocol, SOP table be BMS according to current power state and
State of temperature defines battery pack maximum output current;Traditional control strategy is, the current-order that controller is issued according to BMS into
Row control, and there are drops for the setting of SOP table, in order to embody battery performance, battery end discharge capability will not be reduced too much
And the correspondence maximum current output valve under each SOC state is unsmooth, controller output power cannot be controlled effectively, cause to use
In battery pack low-voltage state downward driving, battery pack can have power-off suddenly, the risk that vehicle can not travel at family.
Summary of the invention
The purpose of the present invention is to propose to the dynamical system load shedding controlling parties under a kind of four-wheel low-speed electronic vehicle low battery state
Method, to solve caused by the situation heavy-current discharge of battery capacity deficiency, outage problem and transverse sliding vehicle sense promote user's body suddenly
It tests.
The present invention adopts the following technical solutions to accomplish the above objectives:
A kind of dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state, the specific steps of control method are such as
Under:
1) a load shedding control interval is set；The load shedding control interval includes preset low battery battery electric quantity state
Value is SOC1 value, be interval division between 0% by SOC1 value and battery electric quantity is several sections, S1% ~ S2%, S2% ~
S3%……Sn%~0%,n≤6；S1% > S2% > S3% > ... Sn% > 0%；
2) the corresponding electric machine controller load shedding electric current preset value in setting low battery section；
The lower vehicle performance of setting electricity smoothly declines, and dynamical system power consumption electric current smoothly reduces, and minimum power consumption electric current is battery
It wraps because dynamical system provides electric current consumed by the climbing capacity met greater than p% before the cutting output of battery power shortage；It sets from big to small
In, Ip controller load shedding electric current preset value of making I1, I2, I3 ...；
3): determining the corresponding relationship of SOC1 value Yu controller load shedding electric current preset value；
For the controller load shedding preset value set according to SOC value is corresponded to from big to small, corresponding relationship is as follows: SOC1 is corresponding for S1%
I1, SOC1 are that S2% corresponds to I2, and SOC1 is that S3% corresponds to I3, and SOC1 is that Sn% corresponds to In, and SOC1 is 0% corresponding Ip；
4) battery management system, that is, BMS sends battery electric quantity state value i.e. SOC value in real time, and sends subsequent time most in real time
Big cut-off current Im；If SOC value is greater than the maximum value S1 of the load shedding control interval in step 1), vehicle runs well；When SOC value is small
In S1, controller initially enters load shedding control interval；
5) first determine whether the SOC value in step 4) is in which section of load shedding control interval；According to the load shedding control interval
Both relationship selections of maximum cut-off current Im of subsequent time that corresponding controller consumption pre-set current value Ic and BMS is issued
Smaller value obtains final dynamical system maximum consumption current value;The current value output of electric machine controller control consumption is corresponding
Dynamical system torque realizes vehicle dynamic Control.
The pre-set current value Ic that controller consumption is corresponded in load shedding section is less than the maximum cut-off current Im that BMS is issued, then most
The current value of whole power controller consumption is the pre-set current value Ic of corresponding controller consumption in load shedding section.
The pre-set current value Ic that controller consumption is corresponded in load shedding section is greater than the maximum cut-off current Im that BMS is issued, then most
The current value of whole power controller consumption is the maximum cut-off current Im that BMS is issued.
It is interval division between 0% by SOC1 value and battery electric quantity is several sections, the span phase in several sections
Together.
It is interval division between 0% by SOC1 value and battery electric quantity is several sections, the span in several sections is not
It is identical, and the span in latter section is less than previous section span.
Dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state proposed by the present invention, this hair
It is bright that new load shedding control interval is set on the basis of original BMS Current limited Control, it is pre- to increase a kind of load shedding control in the section
It limits flow valuve, is controlled according to the relationship selection one of which between BMS cut-off current and preset value；If BMS cut-off current is bigger than normal,
Default cut-off current is executed, vehicle small-power under low battery state can be made to stablize output, avoid leading to electricity because of High-current output
Amount is rapidly lost, and the case where vehicle power-off can not travel occurs.If BMS cut-off current is less than normal, illustrate battery management system from peace
Entirely, environment, cycle life etc. comprehensive descision as a result, executing according to BMS cut-off current ensure that vehicle battery pack safety
Stable operation.
By the way of the control of limit value controller loss current, it ensure that battery pack low-power stablizes output, vehicle
It can also maintain to stablize output.Speed needed for existing basic operation function has again uses required climbing capacity substantially.
Detailed description of the invention
Fig. 1 is a kind of power control strategies flow chart provided in an embodiment of the present invention.
Fig. 2 is that controller load shedding presets cut-off current flow chart under low battery state.
Fig. 3 is that a kind of controller load shedding that present example provides presets current limit curve figure.
Cut-off current selects flow chart in a kind of low battery load shedding control strategy that Fig. 4 provides for present example.
Cut-off current selects flow chart in another low battery load shedding control strategy that Fig. 5 provides for present example.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other reality that those of ordinary skill in the art obtain without making creative work
Example is applied, shall fall within the protection scope of the present invention.
As shown in Figure 1, the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state, controlling party
Specific step is as follows for method:
In conjunction with Fig. 2), 1) one load shedding control interval of setting；The load shedding control interval includes preset low battery battery
It is several sections, each area that SOC1 value and battery electric quantity are interval division between 0% by group state of charge value, that is, SOC1 value
Between span can be the same or different, if adjacent section span is not identical, span need to be less than previous section span between latter zone:
S1% ~ S2%, S2% ~ S3% ... Sn% ~ 0%(n value are bigger, and control is finer, but will increase control algolithm complexity, more excellent design n
≤ 6)；S1% > S2% > S3% > ... Sn% > 0%；
2) the corresponding electric machine controller load shedding electric current preset value in setting low battery section；Controller presets load shedding current value according to drop
The performance requirements predefined such as vehicle acceleration, max. speed, climbing after load；
The lower vehicle performance of setting electricity smoothly declines, and dynamical system power consumption electric current smoothly reduces, and minimum power consumption electric current is battery
It wraps because dynamical system provides electric current consumed by the climbing capacity met greater than p% before the cutting output of battery power shortage；It sets from big to small
In, Ip controller load shedding electric current preset value of making I1, I2, I3 ...；
3): determining the corresponding relationship of SOC1 value Yu controller load shedding electric current preset value；
For the controller load shedding preset value set according to SOC value is corresponded to from big to small, corresponding relationship is as follows: SOC1 is corresponding for S1%
I1, SOC1 are that S2% corresponds to I2, and SOC1 is that S3% corresponds to I3, and SOC1 is that Sn% corresponds to In, and SOC1 is 0% corresponding Ip；Referring to Fig. 3 institute
Show, a kind of controller load shedding provided presets current limit curve figure, and abscissa is SOC value, and ordinate is that dynamical system consumes electric current
It is worth, wherein In=Ip；
4) battery management system, that is, BMS sends battery electric quantity state value i.e. SOC value in real time, and sends subsequent time most in real time
Big cut-off current Im；If SOC value is greater than the maximum value S1 of the load shedding control interval in step 1), vehicle runs well；When SOC value is small
In S1, controller initially enters load shedding control interval；
5) first determine whether the SOC value in step 4) is in which section of load shedding control interval；According to the load shedding control interval
Both relationship selections of maximum cut-off current Im of subsequent time that corresponding controller consumption pre-set current value Ic and BMS is issued
Smaller value obtains final dynamical system maximum consumption current value;The current value output of electric machine controller control consumption is corresponding
Dynamical system torque realizes vehicle dynamic Control.
The pre-set current value Ic that controller consumption is corresponded in load shedding section is less than the maximum cut-off current Im that BMS is issued, then most
The current value of whole power controller consumption is the pre-set current value Ic of corresponding controller consumption in load shedding section.
The pre-set current value Ic that controller consumption is corresponded in load shedding section is greater than the maximum cut-off current Im that BMS is issued, then most
The current value of whole power controller consumption is the maximum cut-off current Im that BMS is issued.
If schemed shown in figure, dynamical system consumption current value selection process in load shedding control strategy is described in detail.This method
Include:
S31: the maximum cut-off current Im that the SOC value S and BMS that BMS is issued are issued is received.As S < S1%, starting load shedding controls plan
Slightly
S32: judging S >=S2%, then according to controller load shedding pre-set current value curve graph, calculates corresponding under current SOC value state
Controller presets load shedding current value Ic=(S-S2%) (I1-I2)/(S1%-S2%)；
S33: judging Ic and Im size, if Ic is big, current battery state is not suitable for carrying out larger current output, chooses Im and makees
For final dynamical system maximum consumption current value, if Im is big, then it represents that current battery state is preferable, can guarantee to be previously set
Output power, choose Ic as final dynamical system maximum consumption current value.
Cut-off current selects flow chart in another low battery load shedding control strategy that this example provides, shown in Figure 5, in detail
Carefully describe dynamical system consumption current value selection process in load shedding control strategy.This method comprises:
S41: the maximum cut-off current Im that the SOC value S and BMS that BMS is issued are issued is received.As S < S1%, starting load shedding controls plan
Slightly；
S42: judging S<Sn% and S>=0%, then according to controller load shedding pre-set current value curve graph, calculates under current SOC value state
Corresponding controller presets load shedding current value Ic=Ip=Im；
S43: judging Ic and Im size, if Ic is big, current battery state is not suitable for carrying out larger current output, chooses Im and makees
For final dynamical system maximum consumption current value, if Im is big, then it represents that current battery state is preferable, can guarantee to be previously set
Output power, choose Ic as final dynamical system maximum consumption current value.
Claims (5)
1. the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state, it is characterised in that: controlling party
Specific step is as follows for method:
1) a load shedding control interval is set；The load shedding control interval includes preset low battery battery electric quantity state
Value is SOC1 value, be interval division between 0% by SOC1 value and battery electric quantity is several sections: S1% ~ S2%, S2% ~
S3% ... Sn% ~ 0%, n≤6；S1% > S2% > S3% > ... Sn% > 0%；
2) the corresponding electric machine controller load shedding electric current preset value in setting low battery section；
The lower vehicle performance of setting electricity smoothly declines, and dynamical system power consumption electric current smoothly reduces, and minimum power consumption electric current is battery
It wraps because dynamical system provides electric current consumed by the climbing capacity met greater than p% before the cutting output of battery power shortage；It sets from big to small
In, Ip controller load shedding electric current preset value of making I1, I2, I3 ...；
3): determining the corresponding relationship of SOC1 value Yu controller load shedding electric current preset value；
For the controller load shedding preset value set according to SOC value is corresponded to from big to small, corresponding relationship is as follows: SOC1 is corresponding for S1%
I1, SOC1 are that S2% corresponds to I2, and SOC1 is that S3% corresponds to I3, and SOC1 is that Sn% corresponds to In, and SOC1 is 0% corresponding Ip；
4) battery management system, that is, BMS sends battery electric quantity state value i.e. SOC value in real time, and sends subsequent time most in real time
Big cut-off current Im；If SOC value is greater than the maximum value S1 of the load shedding control interval in step 1), vehicle runs well；When SOC value is small
In S1, controller initially enters load shedding control interval；
5) first determine whether the SOC value in step 4) is in which section of load shedding control interval；According to the load shedding control interval
Both relationship selections of maximum cut-off current Im of subsequent time that corresponding controller consumption pre-set current value Ic and BMS is issued
Smaller value obtains final dynamical system maximum consumption current value;The current value output of electric machine controller control consumption is corresponding
Dynamical system torque realizes vehicle dynamic Control.
2. the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state as described in claim 1,
It is characterized by: the pre-set current value Ic for corresponding to controller consumption in load shedding section is less than the maximum cut-off current Im that BMS is issued, then
The current value of final power controller consumption is the pre-set current value Ic of corresponding controller consumption in load shedding section.
3. the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state as described in claim 1,
It is characterized by: the pre-set current value Ic for corresponding to controller consumption in load shedding section is greater than the maximum cut-off current Im that BMS is issued, then
The current value of final power controller consumption is the maximum cut-off current Im that BMS is issued.
4. the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state as described in claim 1,
It is characterized by: be interval division between 0% by SOC1 value and battery electric quantity be several sections, several sections across
It spends identical.
5. the dynamical system load shedding control method under a kind of four-wheel low-speed electronic vehicle low battery state as described in claim 1,
It is characterized by: be interval division between 0% by SOC1 value and battery electric quantity be several sections, several sections across
Degree is not identical, and the span in latter section is less than previous section span.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609700.5A CN109532561A (en) | 2018-12-27 | 2018-12-27 | Dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609700.5A CN109532561A (en) | 2018-12-27 | 2018-12-27 | Dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109532561A true CN109532561A (en) | 2019-03-29 |
Family
ID=65857229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811609700.5A Pending CN109532561A (en) | 2018-12-27 | 2018-12-27 | Dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109532561A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993952A (en) * | 2019-05-27 | 2020-11-27 | 广州雷利诺车业有限公司 | Electric motorcycle and control method thereof |
| CN114030357A (en) * | 2021-07-14 | 2022-02-11 | 山西赛坦科技有限公司 | Control device and control method for preventing BMS (battery management system) recharging overcurrent |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014004940A (en) * | 2012-06-25 | 2014-01-16 | Honda Motor Co Ltd | Controller and control method of hybrid vehicle |
| JP2014201234A (en) * | 2013-04-05 | 2014-10-27 | 株式会社オートネットワーク技術研究所 | Auxiliary storage battery usage method in vehicular power supply device, and vehicular power supply device |
| CN105383422A (en) * | 2015-12-11 | 2016-03-09 | 北京汽车股份有限公司 | Method and device for controlling automobile storage battery |
| CN106329612A (en) * | 2015-06-30 | 2017-01-11 | 现代自动车株式会社 | Device and method for controlling battery charge and discharge quantity in eco-friendly vehicle |
| CN106585402A (en) * | 2016-12-01 | 2017-04-26 | 安徽鸿创新能源动力有限公司 | Charge and discharge control method of power battery |
| CN106828158A (en) * | 2017-02-05 | 2017-06-13 | 湖北文理学院 | A kind of new-energy automobile and its method of supplying power to and electric power system |
| KR20170105735A (en) * | 2016-03-10 | 2017-09-20 | 현대자동차주식회사 | Method for controlling LDC output of ecofriendly vehicle |
-
2018
- 2018-12-27 CN CN201811609700.5A patent/CN109532561A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014004940A (en) * | 2012-06-25 | 2014-01-16 | Honda Motor Co Ltd | Controller and control method of hybrid vehicle |
| JP2014201234A (en) * | 2013-04-05 | 2014-10-27 | 株式会社オートネットワーク技術研究所 | Auxiliary storage battery usage method in vehicular power supply device, and vehicular power supply device |
| CN106329612A (en) * | 2015-06-30 | 2017-01-11 | 现代自动车株式会社 | Device and method for controlling battery charge and discharge quantity in eco-friendly vehicle |
| CN105383422A (en) * | 2015-12-11 | 2016-03-09 | 北京汽车股份有限公司 | Method and device for controlling automobile storage battery |
| KR20170105735A (en) * | 2016-03-10 | 2017-09-20 | 현대자동차주식회사 | Method for controlling LDC output of ecofriendly vehicle |
| CN106585402A (en) * | 2016-12-01 | 2017-04-26 | 安徽鸿创新能源动力有限公司 | Charge and discharge control method of power battery |
| CN106828158A (en) * | 2017-02-05 | 2017-06-13 | 湖北文理学院 | A kind of new-energy automobile and its method of supplying power to and electric power system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993952A (en) * | 2019-05-27 | 2020-11-27 | 广州雷利诺车业有限公司 | Electric motorcycle and control method thereof |
| CN114030357A (en) * | 2021-07-14 | 2022-02-11 | 山西赛坦科技有限公司 | Control device and control method for preventing BMS (battery management system) recharging overcurrent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103973193B (en) | There is the control device of electric motor of electrical storage device and conductive discharge device | |
| CN104218875B (en) | Independent photovoltaic generating railway power supply control system and control method thereof | |
| US20020171392A1 (en) | Energy management system for a motor vehicle electrical system | |
| CN110696814B (en) | Power supply control method and device for hybrid electric vehicle | |
| CN102231446B (en) | Method for controlling consistency of power battery pack | |
| CN106494328B (en) | It is a kind of based on electrical power line computation fuel-engined vehicle electric energy control system and method | |
| CN109532561A (en) | Dynamical system load shedding control method under four-wheel low-speed electronic vehicle low battery state | |
| CN117795843A (en) | Method for optimizing system efficiency of battery-powered electric motor | |
| CN111391819A (en) | Range extender control method, device, equipment and storage medium | |
| CN110131844A (en) | Air conditioner and its control method, computer readable storage medium | |
| CN110293845A (en) | Start and stop battery system, start and stop battery control method and vehicle-carried | |
| CN113746179A (en) | Charging system and charging management method for aged battery | |
| CN108599329A (en) | Accumulator group auxiliary device and its working method | |
| CN207853533U (en) | A kind of power supply circuit | |
| CN218920023U (en) | Battery-powered low-temperature starting system based on super capacitor | |
| CN216356007U (en) | Charging system for aged batteries | |
| CN110212602A (en) | A kind of charge control method and device, computer storage medium | |
| CN113386607B (en) | Charging station charging and discharging automatic balancing method and device and charging station | |
| CN111370738A (en) | Self-adaptive load control system and method for fuel cell power generation system | |
| CN113824182B (en) | Passive equalization method and passive equalization system for self-varying period | |
| CN103283081A (en) | Device and method for removing lead sulphate build-p | |
| CN104916490A (en) | Permanent-magnet vacuum circuit breaker switching-on/off control method and permanent-magnet vacuum circuit breaker switching-on/off device | |
| CN112152526B (en) | Pre-excitation current rotating speed response energy-saving control method for intelligent automobile generator | |
| CN111845462B (en) | Fuel cell power distribution control method | |
| CN203562816U (en) | Power battery pack equalizing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190329 |