CN105383280A - Hybrid power system for mini electric car and control method of hybrid power system - Google Patents
Hybrid power system for mini electric car and control method of hybrid power system Download PDFInfo
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- CN105383280A CN105383280A CN201510821641.8A CN201510821641A CN105383280A CN 105383280 A CN105383280 A CN 105383280A CN 201510821641 A CN201510821641 A CN 201510821641A CN 105383280 A CN105383280 A CN 105383280A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a hybrid power system for a mini electric car and a control method of the hybrid power system. An electric driver and a mechanical driver are adopted as hybrid power systems, and are independent relatively, and the work and the energy distribution of the electric driver and the mechanical driver are controlled by a controller. When the electric quantity of an accumulator is high, an electric driving manner is adopted; when the electric quantity of the accumulator is low, an engine mechanical driving manner is adopted; besides, an electric motor becomes a generator for charging the accumulator without enabling the accumulator to be full of charges, when certain electricity capacity is achieved, the electric motor automatically stops charging, and two power manners are used for preparing for simultaneous output when a large power needs to be output.
Description
Technical field
The present invention relates to technical field of new energy, is a kind of miniature electric automobile hybrid power system and control method thereof specifically.
Background technology
Current miniature electric automobile mostly is pure electronic, and FAQs is that course continuation mileage is short, many reasons: 1) car load volume is little, and match battery capacity is little; 2) battery is immature, and capacity attenuation speed is fast; 3) several factors such as Southern Mountain Areas of China road conditions are many, and climbing consumption of current is large, course continuation mileage is short to cause user to complain, therefore car load power system cannot meet user becomes the primary problem solved to course continuation mileage requirement.How to solve, increase capacity of cell unrealistic; Carry charger baby or charge at any time, user is inconvenient.Best terms of settlement installs hybrid power system exactly.Current hybrid power system is very many, but system bulk is comparatively large, and price is high.And the hybrid power system be applied on miniature electric automobile, industry is rare.The domestic product had at present, volume is bigger than normal, and cost is relatively high, and therefore develop a kind of structure simple, the miniature electric automobile hybrid power system technology that cost is low has become a very important problem.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of structure miniature electric automobile hybrid power system simple, with low cost and control method thereof.
In order to solve the problems of the technologies described above, the technical solution used in the present invention one is:
A kind of miniature electric automobile hybrid power system, comprise controller, mechanical actuation device and electric driver, described mechanical actuation device and the relatively independent setting of electric driver, described mechanical actuation device comprises driving engine and retarder, described driving engine drives the wheel running of automobile by retarder, connected by drive belt between described driving engine and retarder, described electric actuator comprises electrical motor, storage battery and inverter, the wheel running of described direct motor drive automobile, described electrical motor is connected with storage battery by inverter, described driving engine, electrical motor, storage battery and inverter are electrically connected with controller respectively.
In order to solve the problems of the technologies described above, the technical solution used in the present invention two is:
A control method for miniature electric automobile hybrid power system as described in technical scheme one, comprising: electric drive mode, electric drive machinery auxiliary mode and mechanical traction mode; Described electric drive mode refers to and drives separately the wheel of automobile to operate by electrical motor; Described electric drive machinery auxiliary mode refers to using driving engine as auxiliary power, jointly drives the wheel of automobile to operate by electrical motor and driving engine; Described mechanical traction mode refers to and drives separately the wheel of automobile to operate by driving engine;
When miniature electric automobile starts, first controller judges that whether the accumulator electric-quantity of electric driver is higher than 70%, if, then electric drive mode opened by controller, by storage battery, electrical motor is powered, after motor start-up, controller judges whether the horsepower output of electrical motor meets the power requirement of automobile again, if the horsepower output of electrical motor meets the power requirement of automobile, then keep electric drive mode, driving engine is in stopped status, if the horsepower output of electrical motor cannot meet the power requirement of automobile, then electric drive machinery auxiliary mode opened by controller, the wheel of automobile is jointly driven to operate by electrical motor and driving engine, if not, then mechanical traction mode opened by controller, and the electric energy of closing storage battery exports, and drives separately the wheel of automobile to operate by driving engine, and while wheel running, driving electric machine charges to storage battery,
When after miniature electric automobile startup optimization, if automobile is in electric drive mode or electric drive machinery auxiliary mode, then controller detects the electricity of storage battery in real time, when storage battery electricity lower than 10% time, controller changes electric drive mode or electric drive machinery auxiliary mode into mechanical traction mode, and storage battery starts charging; If automobile is in mechanical traction mode, then controller detects the charge condition of storage battery in real time, when battery charge completes, controller judges whether the current power demand of automobile is greater than the horsepower output of electrical motor, if, then mechanical traction mode is changed into electric drive machinery auxiliary mode by controller, and if not, then controller changes mechanical traction mode into electric drive mode.
Beneficial effect of the present invention is:
(1) mixed power system structure is simple, and the general hybrid power system of volume ratio is little;
(2) electrical motor is drive motor, is also electrical generator, saves electrical generator, reduces system cost;
(3) belt is selected in engine mechanical transmission, simply, saves cost further;
(4) hybrid power system control policy is reasonable, ensures that system oil loss-rate ordinary hybrid system is lower.
Detailed description of the invention
By describing technology contents of the present invention in detail, being realized object and effect, be explained below in conjunction with embodiment.
The design of most critical of the present invention is: electric driver and mechanical actuation device relatively independent, exported by controller control work and energy distribution.When accumulator electric-quantity is higher, adopt electric drive; When accumulator electric-quantity is lower, adopt engine mechanical to drive, simultaneously electrical motor becomes electrical generator and charges a battery, and be not full of, automatically stop charging to certain capacity, during Power output large for demand, two kinds of power export simultaneously and prepare.
Concrete, miniature electric automobile hybrid power system provided by the invention, comprise controller, mechanical actuation device and electric driver, described mechanical actuation device and the relatively independent setting of electric driver, described mechanical actuation device comprises driving engine and retarder, described driving engine drives the wheel running of automobile by retarder, connected by drive belt between described driving engine and retarder, described electric actuator comprises electrical motor, storage battery and inverter, the wheel running of described direct motor drive automobile, described electrical motor is connected with storage battery by inverter, described driving engine, electrical motor, storage battery and inverter are electrically connected with controller respectively.
The control method of above-mentioned miniature electric automobile hybrid power system is as follows:
Comprise: electric drive mode, electric drive machinery auxiliary mode and mechanical traction mode; Described electric drive mode refers to and drives separately the wheel of automobile to operate by electrical motor; Described electric drive machinery auxiliary mode refers to using driving engine as auxiliary power, jointly drives the wheel of automobile to operate by electrical motor and driving engine; Described mechanical traction mode refers to and drives separately the wheel of automobile to operate by driving engine;
When miniature electric automobile starts, first controller judges that whether the accumulator electric-quantity of electric driver is higher than 70%, if, then electric drive mode opened by controller, by storage battery, electrical motor is powered, after motor start-up, controller judges whether the horsepower output of electrical motor meets the power requirement of automobile again, if the horsepower output of electrical motor meets the power requirement of automobile, then keep electric drive mode, driving engine is in stopped status, if the horsepower output of electrical motor cannot meet the power requirement of automobile, then electric drive machinery auxiliary mode opened by controller, the wheel of automobile is jointly driven to operate by electrical motor and driving engine, if not, then mechanical traction mode opened by controller, and the electric energy of closing storage battery exports, and drives separately the wheel of automobile to operate by driving engine, and while wheel running, driving electric machine charges to storage battery,
When after miniature electric automobile startup optimization, if automobile is in electric drive mode or electric drive machinery auxiliary mode, then controller detects the electricity of storage battery in real time, when storage battery electricity lower than 10% time, controller changes electric drive mode or electric drive machinery auxiliary mode into mechanical traction mode, and storage battery starts charging; If automobile is in mechanical traction mode, then controller detects the charge condition of storage battery in real time, when battery charge completes, controller judges whether the current power demand of automobile is greater than the horsepower output of electrical motor, if, then mechanical traction mode is changed into electric drive machinery auxiliary mode by controller, and if not, then controller changes mechanical traction mode into electric drive mode.
In the above-described embodiments, because electrical motor is drive motor, it is again electrical generator, therefore the mechanical energy that can make full use of the electric energy of storage battery and driving engine provides carries out Power output and power storage, both the clean energy resource of electronlmobil had been met, the requirement of energy-saving and emission-reduction, achieve again the function of electronlmobil self-charging, eliminate the trouble of electronlmobil stopping for charging, avoid the energy resource consumption that electronlmobil causes because of charging start and stop, make the course continuation mileage of automobile longer, do not stop run time more of a specified duration, oil consumption is lower, the dependence of external charging equipment is also greatly reduced.
From foregoing description, beneficial effect of the present invention is:
(1) mixed power system structure is simple, and the general hybrid power system of volume ratio is little;
(2) electrical motor is drive motor, also be electrical generator, save electrical generator, reduce system cost, and both met the clean energy resource of electronlmobil, the requirement of energy-saving and emission-reduction, achieve again the function of electronlmobil self-charging, eliminate the trouble of electronlmobil stopping for charging, avoid the energy resource consumption that electronlmobil causes because of charging start and stop, make the course continuation mileage of automobile longer, do not stop time of running is more of a specified duration, and oil consumption is lower, also greatly reduces the dependence of external charging equipment;
(3) belt is selected in engine mechanical transmission, and structure is simple, saves cost further;
(4) hybrid power system control policy is reasonable, ensures that system oil loss-rate ordinary hybrid system is lower.
Further, when automobile is in mechanical traction mode, controller detects the electricity of storage battery in real time, and when accumulator electric-quantity reaches more than 90%, controller cuts off the charging circuit of electrical motor and storage battery automatically, and battery charge completes.
From foregoing description, beneficial effect of the present invention is: the charge condition being controlled storage battery by controller, storage battery stops charging automatically when reaching certain capacity, overcharging of storage battery can not be caused, improve the service life of storage battery, and driving engine is while driving automotive operation, electrical motor can charge a battery as electrical generator, during Power output large for demand, two kinds of power export simultaneously and prepare.
In sum, miniature electric automobile hybrid power system provided by the invention and control method thereof, structure is simple, with low cost, and control policy is reasonable, ensures that system oil loss-rate ordinary hybrid system is lower.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing description of the present invention to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a miniature electric automobile hybrid power system, it is characterized in that: comprise controller, mechanical actuation device and electric driver, described mechanical actuation device and the relatively independent setting of electric driver, described mechanical actuation device comprises driving engine and retarder, described driving engine drives the wheel running of automobile by retarder, connected by drive belt between described driving engine and retarder, described electric actuator comprises electrical motor, storage battery and inverter, the wheel running of described direct motor drive automobile, described electrical motor is connected with storage battery by inverter, described driving engine, electrical motor, storage battery and inverter are electrically connected with controller respectively.
2. a control method for miniature electric automobile hybrid power system as claimed in claim 1, is characterized in that, comprising: electric drive mode, electric drive machinery auxiliary mode and mechanical traction mode; Described electric drive mode refers to and drives separately the wheel of automobile to operate by electrical motor; Described electric drive machinery auxiliary mode refers to using driving engine as auxiliary power, jointly drives the wheel of automobile to operate by electrical motor and driving engine; Described mechanical traction mode refers to and drives separately the wheel of automobile to operate by driving engine;
When miniature electric automobile starts, first controller judges that whether the accumulator electric-quantity of electric driver is higher than 70%, if, then electric drive mode opened by controller, by storage battery, electrical motor is powered, after motor start-up, controller judges whether the horsepower output of electrical motor meets the power requirement of automobile again, if the horsepower output of electrical motor meets the power requirement of automobile, then keep electric drive mode, driving engine is in stopped status, if the horsepower output of electrical motor cannot meet the power requirement of automobile, then electric drive machinery auxiliary mode opened by controller, the wheel of automobile is jointly driven to operate by electrical motor and driving engine, if not, then mechanical traction mode opened by controller, and the electric energy of closing storage battery exports, and drives separately the wheel of automobile to operate by driving engine, and while wheel running, driving electric machine charges to storage battery,
When after miniature electric automobile startup optimization, if automobile is in electric drive mode or electric drive machinery auxiliary mode, then controller detects the electricity of storage battery in real time, when storage battery electricity lower than 10% time, controller changes electric drive mode or electric drive machinery auxiliary mode into mechanical traction mode, and storage battery starts charging; If automobile is in mechanical traction mode, then controller detects the charge condition of storage battery in real time, when battery charge completes, controller judges whether the current power demand of automobile is greater than the horsepower output of electrical motor, if, then mechanical traction mode is changed into electric drive machinery auxiliary mode by controller, and if not, then controller changes mechanical traction mode into electric drive mode.
3. the control method of miniature electric automobile hybrid power system according to claim 2, it is characterized in that: when automobile is in mechanical traction mode, controller detects the electricity of storage battery in real time, when accumulator electric-quantity reaches more than 90%, controller cuts off the charging circuit of electrical motor and storage battery automatically, and battery charge completes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510821641.8A CN105383280A (en) | 2015-11-24 | 2015-11-24 | Hybrid power system for mini electric car and control method of hybrid power system |
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| CN201510821641.8A CN105383280A (en) | 2015-11-24 | 2015-11-24 | Hybrid power system for mini electric car and control method of hybrid power system |
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| CN105383280A true CN105383280A (en) | 2016-03-09 |
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Cited By (2)
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| CN108528192A (en) * | 2018-05-23 | 2018-09-14 | 吉林大学 | Hybrid power system based on open winding electric machine and its power distribution method |
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Application publication date: 20160309 |