CN107097685A - Electric automobile composite energy storage system and energy distributing method based on elastic energy storage - Google Patents
Electric automobile composite energy storage system and energy distributing method based on elastic energy storage Download PDFInfo
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- CN107097685A CN107097685A CN201710274526.2A CN201710274526A CN107097685A CN 107097685 A CN107097685 A CN 107097685A CN 201710274526 A CN201710274526 A CN 201710274526A CN 107097685 A CN107097685 A CN 107097685A
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- entire car
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- energy storage
- electric automobile
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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
-
- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
-
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Electric automobile composite energy storage system and energy distributing method based on elastic energy storage, belong to electric automobile composite energy storage and energy distribution technique field.Solve the problem of existing electric automobile has short continual mileage, poor acceleration and short battery.The present invention allows electric automobile normally travel under different driving cycles by formulating energy management method, the energy of power supply is reasonably distributed, the acceleration of electric automobile is improved, and extends the service life of electric automobile power battery, the continual mileage of electric automobile is added.The present invention is used suitable for electric automobile composite energy storage.
Description
Technical field
The invention belongs to electric automobile composite energy storage and energy distribution technique field.
Background technology
Now, compared with the automobile of transmission, it is poor to there is acceleration in electric automobile, the problem of continual mileage is short, and
In the case of higher power output, the service life of electrokinetic cell can be shortened.
The content of the invention
The present invention is that have that continual mileage is short, acceleration is poor and battery is short to solve existing electric automobile
The problem of, it is proposed that a kind of electric automobile composite energy storage system and energy management method based on elastic energy storage.
Electric automobile composite energy storage system of the present invention based on elastic energy storage, it includes composite energy storage system, lithium
Air cell group 4, unidirectional DC/DC converters 5, inverter 6, motor 7, entire car controller 8 and discharge device 9；Compound storage
Energy system includes elastic accumulator 1, two-way DC/DC converters 2 and ferric phosphate lithium cell group 3；
The DC current input/output terminal of elastic accumulator 1 connects two-way 2 one electric current input and output of DC/DC converters
End, another electric current input/output terminal of two-way DC/DC converters 2 connect simultaneously ferric phosphate lithium cell group 3 discharge and recharge signal end,
The current output terminal of the current input terminal of discharge device 9, the DC terminal of inverter 6 and unidirectional DC/DC converters 5；
The current output terminal of the current input terminal connection lithium-air battery group 4 of unidirectional DC/DC converters 5；
The ac output end of inverter 6 connects the power end of motor 7, and motor 7 drives the gear of electric automobile
Rotated；
The two-way DC/DC changeover control signals output end of entire car controller 8 connects the control letter of two-way DC/DC converters 2
Number input, the battery pack that the battery pack remaining power signal input of entire car controller 8 connects two-way DC/DC converters 2 is remained
Remaining electric quantity signal output end；
The accumulator control signal output of entire car controller 8 connects the switch controlling signal input of elastic accumulator 1,
The energy storage state signal input part of entire car controller 8 connects the energy storage state output end of elastic accumulator 1；
The inverter changeover control signal output end of entire car controller 8 connects the changeover control signal input of inverter 6；
The aerial drainage control signal output of entire car controller 8 connects the aerial drainage control signal input of discharge device 9；Vehicle
The change-over switch control output of controller 8 is connected the conversion of unidirectional DC/DC converters 5 with lithium-air battery dump energy input
Control input and dump energy output end.
Further, elastic accumulator 1 includes arrestment mechanism 11, Wo Huang mechanisms 12, clutch 13 and direct current generator 14；
Wo Huang mechanisms 12 are set on a power transmission shaft with arrestment mechanism 11, and the power transmission shaft is defeated with direct current generator 14
Shaft is coaxially connected, and the power end of direct current generator 14 connects a current signal input/output terminal of two-way DC/DC converters 2
Further, arrestment mechanism 11 includes housing, spring 111, metal bar 112, electromagnet 113, ratchet 114 and ratchet
115；
One end of spring 111 is fixed on the side wall of housing, and the other end of spring 111 is fixed with the one end of metal bar 112 to be connected
Connect, metal bar 112 is arranged between electromagnet 113 and ratchet 114, and provided with space between electromagnet 113 and metal bar 112,
And metal bar 112 is located in the magnetic field of electromagnet, the front end card of ratchet 114 is set in the tooth of sub- ratchet 115, the rear end of ratchet 114
It is flexibly connected with the side wall of housing.
The energy distributing method of electric automobile composite energy storage system based on elastic energy storage, this method is concretely comprised the following steps：
Step 1: gathering opening for the speed, the aperture of gas pedal and brake pedal of electric automobile using onboard sensor
Degree, the dump energy of ferric phosphate lithium cell group 3 is gathered using two-way DC/DC converters 2, using pulling force sensor collection elasticity storage
The pulling force of the whirlpool spring of energy device 1；
Step 2: entire car controller 8 judges whether gas pedal aperture is more than 0, if so, then entire car controller 8 is according to electricity
The speed of electrical automobile and the aperture of gas pedal calculate the demand power P of electric automobile, perform step 3；Otherwise step is performed
Six；
Step 3: entire car controller 8 judges whether the demand power P of electric automobile is more than what lithium-air battery group 4 was exported
Peak power PL, if so, entire car controller 8 controls unidirectional DC/DC converters 5, two-way DC/DC converters 2 and inverter 6 simultaneously
Open, lithium-air battery group 4 is exported peak power output PL, the power output P-PL of elastic accumulator 1, lithium-air battery group 4
Power output is provided with elastic accumulator 1 simultaneously for motor 7；Return and perform step one, otherwise, perform step 4；
Step 4: entire car controller 8 controls unidirectional DC/DC converters 5 and inverter 6 to open simultaneously, make lithium-air battery
4 power output P of group, are that motor 7 provides power output；Entire car controller 8 judges the elastic energy storage of pulling force sensor detection
Whether the pulling force F1 of the whirlpool spring of device 1 is less than whirlpool spring pulling force maximum Fm b%, if so, then performing step 5, otherwise, return is held
Row step one；
Step 5: entire car controller 8 controls two-way DC/DC converters 2 to open, ferric phosphate lithium cell group 3 is to two-way DC/DC
The output current of converter 2, the output shaft rotation of direct current generator 14 charges for elastic accumulator 1, until the whirlpool spring of elastic accumulator 1
Mechanism 12 reaches the b% of whirlpool spring pulling force maximum, returns and performs step one；
Step 6: entire car controller 8 judges whether brake pedal aperture is more than 0, if so, then performing step 7, otherwise, return
Receipt row step one；
Step 7: entire car controller 8 judges whether the dump energy of ferric phosphate lithium cell group 3 is more than ferric phosphate lithium cell group
The maximum threshold values a of 3 electricity, if so, the control inverter 6 of entire car controller 8 is opened, while the power electronics of controlled discharge device 9
Switch closure, consumes the energy for reclaiming braking, return to step one；Otherwise, the control of entire car controller 8 inverter 6 is opened, and is reclaimed
Braking energy is the maximum threshold values a of electricity that ferric phosphate lithium cell group 3 charges to ferric phosphate lithium cell group 3, returns and performs step one.
The present invention allows electric automobile normally travel under different driving cycles by formulating energy management method, electricity
The energy in source is reasonably distributed, and improves the acceleration of electric automobile, and extends the use longevity of electric automobile power battery
Life, adds the continual mileage of electric automobile.
Brief description of the drawings
Fig. 1 is that this reality invents the described electric automobile composite energy storage system knot theory diagram based on elastic energy storage；
Fig. 2 is the structural representation of the elastic accumulator described in embodiment two；
Fig. 3 is the structural representation of the arrestment mechanism described in embodiment three；
Fig. 4 is the energy distribution of the electric automobile composite energy storage system based on elastic energy storage described in embodiment four
The flow chart of method.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one, illustrate present embodiment, the electricity based on elastic energy storage described in present embodiment with reference to Fig. 1
Electrical automobile composite energy storage system, it include composite energy storage system, lithium-air battery group 4, unidirectional DC/DC converters 5, inverter 6,
Motor 7, entire car controller 8 and discharge device 9；Composite energy storage system includes elastic accumulator 1, two-way DC/DC converters 2
With ferric phosphate lithium cell group 3；
The DC current input/output terminal of elastic accumulator 1 connects two-way 2 one electric current input and output of DC/DC converters
End, another electric current input/output terminal of two-way DC/DC converters 2 connect simultaneously ferric phosphate lithium cell group 3 discharge and recharge signal end,
The current signal output of the current signal input of discharge device 9, the direct current signal end of inverter 6 and unidirectional DC/DC converters 5
End；
The current signal output end of the current signal input connection lithium-air battery group 4 of unidirectional DC/DC converters 5；
The AC signal end of inverter 6 connects the power supply signal end of motor 7, the driving electric automobile of motor 7
Gear is rotated；
The two-way DC/DC changeover control signals output end of entire car controller 8 connects the control letter of two-way DC/DC converters 2
Number input, the battery pack that the battery pack remaining power signal input of entire car controller 8 connects two-way DC/DC converters 2 is remained
Remaining electric quantity signal output end；
The accumulator control signal output of entire car controller 8 connects the switch controlling signal input of elastic accumulator 1,
The energy storage state signal input part of entire car controller 8 connects the energy storage state output end of elastic accumulator 1；
The inverter changeover control signal output end of entire car controller 8 connects the changeover control signal input of inverter 6；
The aerial drainage control signal output of entire car controller 8 connects the aerial drainage control signal input of discharge device 9；
The change-over switch control output of entire car controller 8 is connected unidirectional DC/DC with lithium-air battery dump energy input
Conversion and control input and the dump energy output end of converter 5.
Embodiment two, illustrate present embodiment with reference to Fig. 2, present embodiment is to described in embodiment one
Electric automobile composite energy storage system based on elastic energy storage further illustrate that elastic accumulator 1 includes arrestment mechanism 11, whirlpool
The clutch 13 of spring mechanism 12 and direct current generator 14；
Wo Huang mechanisms 12 are set on a power transmission shaft with arrestment mechanism 11, and the power transmission shaft is defeated with direct current generator 14
Shaft is coaxially connected, and the power end of direct current generator 14 connects a current signal input/output terminal of two-way DC/DC converters 2；
Clutch 13 is provided between the output shaft of direct current generator 14 and the power transmission shaft.
Embodiment three, illustrate present embodiment with reference to Fig. 3, present embodiment is to described in embodiment two
Electric automobile composite energy storage system based on elastic energy storage further illustrate, arrestment mechanism 11 include housing, spring 111,
Metal bar 112, electromagnet 113, ratchet 114 and ratchet 115；
One end of spring 111 is fixed on the side wall of housing, and the other end of spring 111 is fixed with the one end of metal bar 112 to be connected
Connect, metal bar 112 is arranged between electromagnet 113 and ratchet 114, and provided with space between electromagnet 113 and metal bar 112,
And metal bar 112 is located in the magnetic field of electromagnet, the front end card of ratchet 114 is set in the tooth of sub- ratchet 115, the rear end of ratchet 114
It is flexibly connected with the side wall of housing.
Embodiment four, illustrate present embodiment, the electricity based on elastic energy storage described in present embodiment with reference to Fig. 4
The energy distributing method of electrical automobile composite energy storage system, this method is concretely comprised the following steps：
Step 1: gathering opening for the speed, the aperture of gas pedal and brake pedal of electric automobile using onboard sensor
Degree, the dump energy of ferric phosphate lithium cell group 3 is gathered using two-way DC/DC converters 2, using pulling force sensor collection elasticity storage
The pulling force of the whirlpool spring of energy device 1；
Step 2: entire car controller 8 judges whether gas pedal aperture is more than 0, if so, then entire car controller 8 is according to electricity
The speed of electrical automobile and the aperture of gas pedal calculate the demand power P of electric automobile, perform step 3；Otherwise step is performed
Six；
Step 3: entire car controller 8 judges whether the demand power P of electric automobile is more than what lithium-air battery group 4 was exported
Peak power PL, if so, entire car controller 8 controls unidirectional DC/DC converters 5, two-way DC/DC converters 2 and inverter 6 simultaneously
Open, lithium-air battery group 4 is exported peak power output PL, the power output P-PL of elastic accumulator 1, lithium-air battery group 4
Power output is provided with elastic accumulator 1 simultaneously for motor 7；Return and perform step one, otherwise, perform step 4；
Step 4: entire car controller 8 controls unidirectional DC/DC converters 5 and inverter 6 to open simultaneously, make lithium-air battery
4 power output P of group, are that motor 7 provides power output；Entire car controller 8 judges the elastic energy storage of pulling force sensor detection
Whether the pulling force F1 of the whirlpool spring of device 1 is less than whirlpool spring pulling force maximum Fm b%, if so, then performing step 5, otherwise, return is held
Row step one；
Step 5: entire car controller 8 controls two-way DC/DC converters 2 to open, ferric phosphate lithium cell group 3 is to two-way DC/DC
The output current of converter 2, the output shaft rotation of direct current generator 14 charges for elastic accumulator 1, until the whirlpool spring of elastic accumulator 1
Mechanism 12 reaches the b% of whirlpool spring pulling force maximum, returns and performs step one；
Step 6: entire car controller 8 judges whether brake pedal aperture is more than 0, if so, then performing step 7, otherwise, return
Receipt row step one；
Step 7: entire car controller 8 judges whether the dump energy of ferric phosphate lithium cell group 3 is more than ferric phosphate lithium cell group
The maximum threshold values a of 3 electricity, if so, the control inverter 6 of entire car controller 8 is opened, while the power electronics of controlled discharge device 9
Switch closure, consumes the energy for reclaiming braking, return to step one；Otherwise, the control of entire car controller 8 inverter 6 is opened, and is reclaimed
Braking energy is the maximum threshold values a of electricity that ferric phosphate lithium cell group 3 charges to ferric phosphate lithium cell group 3, returns and performs step one.
Embodiment five, present embodiment are to electronic with elastic accumulator described in embodiment four
A in the further restriction of automobile energy distribution method, step 7 is the 80% of the maximum electricity of ferric phosphate lithium cell group (3).
Embodiment six, present embodiment are to electronic with elastic accumulator described in embodiment four
The value of b in the further restriction of automobile energy distribution method, step 4 and step 5 is 90.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, be integrally connected or be detachably connected；Can be with
It is the connection of two element internals；Can be joined directly together, can also be indirectly connected to by intermediary, for the general of this area
For logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. the electric automobile composite energy storage system based on elastic energy storage, it is characterised in that it includes composite energy storage system, lithium air
Battery pack (4), unidirectional DC/DC converters (5), inverter (6), motor (7), entire car controller (8) and discharge device
(9)；Composite energy storage system includes elastic accumulator (1), two-way DC/DC converters (2) and ferric phosphate lithium cell group (3)；
The DC current input/output terminal of elastic accumulator (1) connects two-way (2) electric current input and output of DC/DC converters
End, two-way another electric current input/output terminal of DC/DC converters (2) connects the charge and discharge telecommunications of ferric phosphate lithium cell group (3) simultaneously
The electric current output at number end, the current input terminal of discharge device (9), the DC terminal of inverter (6) and unidirectional DC/DC converters (5)
End；
The current output terminal of the current input terminal connection lithium-air battery group (4) of unidirectional DC/DC converters (5)；
The power end of the ac output end connection motor (7) of inverter (6), motor (7) drives the tooth of electric automobile
Wheel is rotated；
The two-way DC/DC changeover control signals output end of entire car controller (8) connects the control letter of two-way DC/DC converters (2)
Number input, the battery pack remaining power signal input of entire car controller (8) connects the battery of two-way DC/DC converters (2)
Group remaining power signal output end；
The switch controlling signal input of the accumulator control signal output connection elastic accumulator (1) of entire car controller (8),
The energy storage state output end of the energy storage state signal input part connection elastic accumulator (1) of entire car controller (8)；
The changeover control signal input of the inverter changeover control signal output end connection inverter (6) of entire car controller (8)；
The aerial drainage control signal input of the aerial drainage control signal output connection discharge device (9) of entire car controller (8)；
The change-over switch control output of entire car controller (8) is connected unidirectional DC/DC with lithium-air battery dump energy input and turned
Conversion and control input and the dump energy output end of parallel operation (5).
2. the electric automobile composite energy storage system according to claim 1 based on elastic energy storage, it is characterised in that elasticity storage
Energy device (1) includes arrestment mechanism (11), Wo Huang mechanisms (12) clutch (13) and direct current generator (14)；
Wo Huang mechanisms (12) are set on a power transmission shaft with arrestment mechanism (11), the power transmission shaft and direct current generator (14)
Output shaft is coaxially connected, and the current signal input of the two-way DC/DC converters (2) of power end connection of direct current generator (14) is defeated
Go out end；Clutch (13) is provided between the output shaft and the power transmission shaft of direct current generator (14).
3. the electric automobile composite energy storage system according to claim 2 based on elastic energy storage, it is characterised in that brake
Structure (11) includes housing, spring (111), metal bar (112), electromagnet (113), ratchet (114) and ratchet (115)；
One end of spring (111) is fixed on the side wall of housing, and the other end and metal bar (112) one end of spring (111) are fixed
Connection, metal bar (112) is arranged between electromagnet (113) and ratchet (114), and electromagnet (113) and metal bar (112) it
Between be provided with space, and metal bar (112) be located at electromagnet magnetic field in, the front end card of ratchet (114) sets the tooth of sub- ratchet (115)
Interior, the rear end of ratchet (114) is flexibly connected with the side wall of housing.
4. the energy distributing method of the electric automobile composite energy storage system based on elastic energy storage, it is characterised in that the tool of this method
Body step is：
Step 1: gathering the aperture of the speed, the aperture of gas pedal and brake pedal of electric automobile using onboard sensor, adopt
The dump energy of ferric phosphate lithium cell group (3) is gathered with two-way DC/DC converters (2), using pulling force sensor collection elasticity storage
The pulling force of the whirlpool spring of energy device (1)；
Step 2: entire car controller (8) judges whether gas pedal aperture is more than 0, if so, then entire car controller (8) is according to electricity
The speed of electrical automobile and the aperture of gas pedal calculate the demand power P of electric automobile, perform step 3；Otherwise step is performed
Six；
Step 3: entire car controller (8) judges whether the demand power P of electric automobile is more than what lithium-air battery group (4) was exported
Peak power PL, if so, entire car controller (8) controls unidirectional DC/DC converters (5), two-way DC/DC converters (2) and inversion
Device (6) is opened simultaneously, lithium-air battery group (4) is exported peak power output PL, elastic accumulator (1) power output P-PL,
Lithium-air battery group (4) for motor (7) with elastic accumulator (1) while provide power output, and return performs step one；It is no
Then, step 4 is performed；
Step 4: entire car controller (8) controls unidirectional DC/DC converters (5) and inverter (6) to open simultaneously, make lithium air electricity
Pond group (4) power output P, is that motor (7) provides power output；Entire car controller (8) judges pulling force sensor detection
Whether the pulling force F1 of the whirlpool spring of elastic accumulator (1) is less than whirlpool spring pulling force maximum Fm b%, if so, step 5 is then performed, it is no
Then, return and perform step one；
Step 5: entire car controller (8) controls two-way DC/DC converters (2) to open, ferric phosphate lithium cell group (3) is to two-way DC/
DC converters (2) output current, the output shaft rotation of direct current generator (14) charges for elastic accumulator (1), until elastic energy storage
The Wo Huang mechanisms (12) of device (1) reach the b% of whirlpool spring pulling force maximum, return and perform step one；
Step 6: entire car controller (8) judges whether brake pedal aperture is more than 0, if so, then performing step 7, otherwise, return
Perform step one；
Step 7: entire car controller (8) judges whether the dump energy of ferric phosphate lithium cell group (3) is more than ferric phosphate lithium cell group
(3) the maximum threshold values a of electricity, if so, entire car controller (8) control inverter (6) is opened, while controlled discharge device (9)
Electronic power switch is closed, and consumes the energy for reclaiming braking, return to step one；Otherwise, entire car controller (8) control inverter
(6) open, it is the maximum threshold values of electricity that ferric phosphate lithium cell group (3) charges to ferric phosphate lithium cell group (3) to reclaim braking energy
A, returns and performs step one.
5. the electric automobile energy distribution method according to claim 4 with elastic accumulator, it is characterised in that step
A in seven is the 80% of the maximum electricity of ferric phosphate lithium cell group (3).
6. the electric automobile energy distribution method according to claim 4 with elastic accumulator, it is characterised in that step
The four and b in step 5 value is 90.
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