CN106300514A - Electric automobile fast charging and discharging system, method and electric automobile - Google Patents
Electric automobile fast charging and discharging system, method and electric automobile Download PDFInfo
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- CN106300514A CN106300514A CN201610723075.1A CN201610723075A CN106300514A CN 106300514 A CN106300514 A CN 106300514A CN 201610723075 A CN201610723075 A CN 201610723075A CN 106300514 A CN106300514 A CN 106300514A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a kind of electric automobile fast charging and discharging system, including multiple set of cells；Multiple charging assemblies, each charging assembly all includes the first relay and cradle, cradle connect first relay formed charging controlling brancher, one end of charging controlling brancher connects the positive pole of corresponding set of cells, the other end of charging controlling brancher connects the negative pole of set of cells, and the negative pole of set of cells is connected to negative busbar；Multiple discharge assemblies, each discharge assembly all includes diode, and the anode of diode connects the positive pole of set of cells, and the negative electrode of diode is connected to positive bus-bar；And electric power controller.Present invention also offers a kind of electric automobile and a kind of electric automobile method for quickly charging and discharging.Electric automobile fast charging and discharging system, method and the electric automobile of the present invention, it is possible to achieve the big electric current quick charge of electrokinetic cell；Thoroughly solve the discharge and recharge circulation problem between set of cells in system charge and discharge process, it is ensured that security of system is run reliably.
Description
Technical field
The present invention relates to electric vehicle engineering field, particularly relate to a kind of electric automobile fast charging and discharging system, method
And electric automobile.
Background technology
General electric automobile uses single system trickle charge type lithium-ion-power cell, and the charging interval is longer.Affect electric automobile
Another universal major reason is the course continuation mileage of electric automobile, if the course continuation mileage of pure electric automobile to be improved, therewith
The capacity of corresponding electrokinetic cell is also required to increase.Pure electric automobile is in the case of increasing battery capacity, and charging current wants height
Reach kiloampere and could realize quick charge in ten minutes.In current lithium battery industry, lithium titanate battery can reach
The safe discharge and recharge of high magnification of 10C, battery performance can meet the requirement of big electric current quick charge completely, but general charging gun
Output-current rating is 250A, and it is too big that the beam size of charging gun is generally not capable of doing, the most common single rifle charge-discharge system
The demand of quick charge cannot be met.
Summary of the invention
In view of above-mentioned single rifle charge-discharge system can not realize the problem of quick charge, it is an object of the invention to provide one
Electric automobile fast charging and discharging system, method and electric automobile, it is possible to realizing the big electric current quick charge of electric automobile, saving is filled
The electricity time.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of electric automobile fast charging and discharging system, including:
Multiple set of cells；
The multiple charging assemblies arranged with multiple described set of cells one_to_one corresponding, each described charging assembly all includes first
Relay and cradle, described first relay of described cradle series connection forms charging controlling brancher, described charging controlling brancher
One end connect the positive pole of corresponding set of cells, the other end of described charging controlling brancher connects the negative pole of described set of cells, described
The negative pole of set of cells is connected to negative busbar；
The multiple discharge assemblies arranged with multiple described set of cells one_to_one corresponding, each described discharge assembly all includes two poles
Pipe, the anode of described diode connects the positive pole of described set of cells, and the negative electrode of described diode is connected to described positive bus-bar；And
For the electric power controller controlling described charging assembly and described discharge assembly is turned on and off.
Wherein in an embodiment, for each described charging assembly, the quantity of described cradle is multiple, Duo Gesuo
Stating the charging paths that formed in parallel between cradle, described charging paths described first relay of series connection forms described charging control
Road.
Wherein in an embodiment, each described discharge assembly also includes the second relay, described second relay
One end connects the positive pole of corresponding described set of cells, and the other end of described second relay is connected to positive bus-bar.
Wherein in an embodiment, also include that the multiple electric currents for the discharge current of the described set of cells of detection in real time are examined
Surveying device, multiple described current sensing means are arranged with described set of cells one_to_one corresponding；Described current sensing means is arranged in series
At the positive pole of corresponding set of cells, described current sensing means is connected to described electric power controller.
Wherein in an embodiment, the quantity of described set of cells, described charging assembly and described discharge assembly is two
Individual, and described in each described charging assembly, the quantity of cradle is two.
Wherein in an embodiment, also including the first tripper in each described charging assembly, described charging controls
The positive pole of corresponding described set of cells is connected after branch road described first tripper of series connection.
Present invention also offers a kind of electric automobile, including the electric automobile fast charging and discharging system described in any of the above-described item
System.
Additionally, present invention also offers the method for quickly charging and discharging of a kind of electric automobile, comprise the steps:
The first relay controlled in multiple charging assembly all closes, with inserting by multiple charging guns and multiple cradles
Connect cooperation, multiple set of cells are charged simultaneously；
Judge whether the electricity of each set of cells reaches to preset electricity respectively, the most then control that set of cells is corresponding first
Relay disconnects, and described set of cells is discharged by the diode current flow of its correspondence；If it is not, then control corresponding first the continuing of set of cells
Electrical equipment is in closure state.
Wherein in an embodiment, described method also comprises the steps:
Obtain the discharge current of each described set of cells in real time；
Judge that the discharge current of each described set of cells whether more than or equal to predetermined current, the most then controls institute respectively
State the second relay Guan Bi that set of cells is corresponding；If it is not, the second relay then controlling described set of cells corresponding is in disconnection shape
State.
Wherein in an embodiment, described method also comprises the steps:
Obtain the Guan Wen of diode corresponding to each described set of cells in real time；
Judge that the Guan Wen of each diode whether more than or equal to preset temperature, the most then controls described set of cells respectively
The second corresponding relay Guan Bi；If it is not, the second relay then controlling described set of cells corresponding is off.
The invention has the beneficial effects as follows:
Electric automobile fast charging and discharging system, method and the electric automobile of the present invention, by multiple charging assemblies with multiple
Set of cells set-up mode one to one, it is possible to realize each set of cells and independently carry out discharge and recharge, can pass through multiple charging guns
The electrokinetic cell of car load is charged, such that it is able to realize the big electric current quick charge of electrokinetic cell simultaneously；And by setting
Put the discharge and recharge circulation problem that diode can thoroughly solve in system charge and discharge process between set of cells, it is ensured that security of system can
The operation leaned on.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the electric automobile fast charging and discharging system of one embodiment of the invention；
Fig. 2 is the flow chart of the method for quickly charging and discharging of the electric automobile of one embodiment of the invention.
Detailed description of the invention
In order to make technical scheme clearer, below in conjunction with accompanying drawing, the electric automobile of the present invention is quickly filled
Discharge system, method and electric automobile are described in further detail.Should be appreciated that specific embodiment described herein is only used
To explain that the present invention is not intended to limit the present invention.It should be noted that the embodiment in the case of not conflicting, in the application
And the feature in embodiment can be mutually combined.
As it is shown in figure 1, the electric automobile fast charging and discharging system of one embodiment of the invention, including multiple set of cells 100, with
Multiple set of cells 100 one_to_one corresponding arrange charging assembly 200 and discharge assembly 300 and be used for controlling charging assembly 200 He
The electric power controller (not shown) that discharge assembly 300 is turned on and off.Wherein, each set of cells 100 is by multiple battery lists
Body series connection is formed, so that each set of cells 100 disclosure satisfy that voltage and the power output demand of equipment.In the present embodiment, many
Individual set of cells 100 uses the set of cells of equivalent specifications, and in other embodiments, multiple set of cells 100 can also use different rule
The set of cells of lattice.Meanwhile, by arranging and each set of cells 100 charging assembly 200 one to one and discharge assembly 300, energy
Enough realize the independent charge and discharge process of each set of cells 100, in order to realize the charge and discharge control of each set of cells 100.
Wherein, each charging assembly 200 all includes the first relay and cradle 210, wherein, cradle 210 for
Charging gun grafting coordinates.Cradle 210 connect first relay formed charging controlling brancher, charging controlling brancher one end connect
The positive pole of corresponding set of cells 100, the other end of charging controlling brancher connects the negative pole of set of cells 100, and the negative pole of set of cells 100 is even
It is connected to negative busbar HV-.Specifically, the coil of the first relay can be connected to electric power controller, the contact of the first relay
K2 can connect with cradle 210 and form charging controlling brancher.Now, power on when electric power controller controls the first relay
Time, the contact K2 adhesive of the first relay so that form closed-loop path between charging assembly 200 and set of cells 100, now, logical
Overcharge rifle coordinates with the grafting of cradle 210, can realize the charging process to set of cells 100.When electric power controller control
During the first relay power-off, the contact K2 of the first relay disconnects so that charging assembly 200 disconnects with set of cells 100.
In the present embodiment, by charging assembly 200 and set of cells 100 set-up mode one to one, can be by multiple
The electrokinetic cell of car load is charged by charging gun (rated current of single charging gun is 250 amperes) simultaneously so that this is electronic
The charging current of automobile is the highest can reach n × 250 ampere (n be the quantity of set of cells, n >=2, and n are integer), such that it is able to
Realize the big electric current quick charge of electrokinetic cell.
Each discharge assembly 300 all includes that the anode of diode D1, diode D1 connects the positive pole of set of cells 100, two poles
The negative electrode of pipe D1 is connected to positive bus-bar HV+.In the present embodiment, diode D1 can be the merit that reverse blanking voltage is up to 1000V
Rate diode, the electric current flowing through this diode D1 can reach kilo-ampere, it is ensured that the reliability of this charge-discharge system and safety.?
During the charging of each set of cells 100, due to the forward conduction of diode D1, the reversely characteristic of cut-off, each set of cells 100
Between can not circulating current, but can be powered to high pressure auxiliary equipment/dynamical system by diode, such that it is able to reach each
The purpose of set of cells 100 charge independence, thoroughly solves the charging ring flow problem between each set of cells 100.Certainly, at each
During set of cells charging, due to the characteristic of the reversely cut-off of diode, between each set of cells, also will not produce charging ring
Stream.
In the discharge process of each set of cells 100, when the discharge voltage of each set of cells 100 is consistent, each battery
Group 100 is powered to high pressure auxiliary equipment or dynamical system by diode D1 simultaneously, will not produce and put between each set of cells 100
Electricity circulation.When the discharge voltage of each set of cells 100 is inconsistent, according to the characteristic of diode D1, the electricity that discharge voltage is higher
The diode D1 of pond group 100 correspondence first turns on, automatic preferential discharge, now, and set of cells 100 correspondence that discharge voltage is relatively low
Diode D1 is in cut-off state, therefore, also will not produce electric discharge circulation, thus pass through diode between each set of cells 100
D1 solves the electric discharge circulation problem between each set of cells 100.
In one embodiment, as it is shown in figure 1, the quantity of set of cells 100 is two, accordingly, charging assembly 200 and putting
The quantity of electricity assembly 300 is also two.In other embodiments, the quantity of set of cells 100 can also be two or more.
For each charging assembly 200, the quantity of cradle 210 is multiple, and between multiple cradles 210, in parallel formation is filled
Electricity branch road, charging paths connect first relay formed charging controlling brancher.As it is shown in figure 1, each charging assembly 200 includes two
The individual cradle 210 being arranged in parallel, the charging paths that two cradles 210 are formed the first relay of connecting forms charging and controls
Road, one end of charging controlling brancher connects the positive pole of corresponding set of cells 100, and the other end of charging controlling brancher connects negative busbar
HV-.I.e. in the present embodiment, two set of cells 100 all use the mode of double charging gun charging, during charging, can adopt
Car load electrokinetic cell is charged with the charging gun that four rated current are 250A so that filling of each set of cells 100 simultaneously
Electricity electric current can be up to 500A, and the charging current of system is the highest may be up to 1000A, it is achieved thereby that the asking of big electric current quick charge
Topic, and then can effectively reduce the quantity of charging pile, save the occupation of land of charging vehicle, improve the service efficiency of electric automobile.?
In other embodiments, each charging assembly 200 can also be arranged in parallel plural cradle 210.
Further, each discharge assembly 300 also includes the second relay, and one end of the second relay connects corresponding electricity
The positive pole of pond group 100, the other end of the second relay is connected to positive bus-bar HV+, and the i.e. second relay is in parallel with diode D1 to be set
Put.Specifically, the coil of the second relay can be connected to electric power controller, and the contact K3 of the second relay can be with two poles
Pipe D1 is arranged in parallel, and one end of the contact K3 of the i.e. second relay connects the positive pole of corresponding set of cells 100, touching of the second relay
The other end of some K3 is connected to positive bus-bar HV+.
When electric power controller control the second relay power on time, the contact K3 adhesive of the second relay so that electric discharge group
Form discharge loop between part 300, set of cells 100 and dynamical system etc., now, can be realized dynamical system by the second relay
System and the power supply of high pressure auxiliary equipment.When electric power controller controls the second relay power-off, the contact K3 of the second relay
Disconnecting, now, system is realized dynamical system and the power supply of high pressure auxiliary equipment by diode D1.In the present embodiment, pass through
Second relay is set and may further ensure that the safety of this charge-discharge system.
As further improving, also include the multiple current detecting for the discharge current of detection set of cells 100 in real time
Device 400, multiple current sensing means 400 are arranged with set of cells 100 one_to_one corresponding；Current sensing means 400 is arranged in series in
The positive pole of corresponding set of cells 100, current sensing means 400 is connected to electric power controller, for corresponding electricity being detected
The discharge current of pond group 100 is sent to electric power controller.Wherein, electric power controller can be the controllers such as single-chip microcomputer, electricity
Flow detection device 400 can be Hall transformer etc..
Electric power controller, according to the discharge current of each set of cells 100 received, judges each set of cells 100 respectively
Discharge current is more than or equal to predetermined current, if the discharge current of set of cells 100 is more than or equal to predetermined current, then can cause this
The caloric value of the diode D1 of set of cells 100 correspondence is excessive, and now, electric power controller controls the second of set of cells 100 correspondence
Relay closes, and makes the diode D1 of this set of cells 100 correspondence be in short-circuit condition, thus avoids diode D1 because of the big electricity of circulation
Stream and caloric value is excessive, it is ensured that the safety of this charge-discharge system.If the discharge current of set of cells 100 is less than predetermined current, then may be used
Powering dynamical system and high pressure auxiliary equipment continuing through diode D1, now, electric power controller controls the second relay
Device is failure to actuate, and i.e. controls the second relay still in off-state.
Further, electric power controller is additionally operable to obtain in real time the Guan Wen of each diode D1, and judges each respectively
Whether the Guan Wen of individual diode D1 is more than or equal to preset temperature, if the Guan Wen of diode D1 is more than or equal to preset temperature, then
Control the second relay Guan Bi in parallel with this diode D1, make the diode D1 of this set of cells 100 correspondence be in short-circuit condition,
Thus ensure the safety of this charge-discharge system.If the Guan Wen of diode D1 is less than preset temperature, then can continue through diode
Dynamical system and high pressure auxiliary equipment are powered by D1, and now, electric power controller controls the second relay and is failure to actuate, and i.e. control
Two relays are still in off-state.
Or, when the discharge current of set of cells 100 is more than or equal to predetermined current and the pipe of diode corresponding to set of cells
When temperature is more than or equal to preset temperature, perform step S600, control the second relay Guan Bi that set of cells is corresponding, make this set of cells
Corresponding diode D1 is in short-circuit condition, thus ensures the safety of this discharge system.Otherwise, return step S300, i.e. control
Second relay corresponding with set of cells is off, and can continue through diode D1 and assist dynamical system and high pressure
Equipment is powered.
In one embodiment, each charging assembly 200 also includes the first tripper F3, charging controlling brancher series connection
The positive pole of corresponding set of cells 100 is connected after first tripper F3.This charge-discharge system also includes the second tripper F2, second
Tripper F2 is arranged in series in the positive pole of set of cells 100, one end connection charging controlling brancher of the first tripper F3, and first
The other end of tripper F3 connects the second tripper F2.Wherein, the first tripper F3 and the second tripper F2 is permissible
For chopper, electrical apparatus release or catalyst etc..
The work process of the charge-discharge system of the present invention is described below in conjunction with accompanying drawing:
As it is shown in figure 1, the charge-discharge system of the present embodiment is for powering for dynamical system and high pressure auxiliary equipment etc., its
In, dynamical system series trip device is connected between positive bus-bar HV+ and negative busbar HV-, and high pressure auxiliary equipment series trip fills
Put and control switch and be connected between positive bus-bar HV+ and negative busbar HV-.
The negative pole of set of cells 100 is connected to negative busbar HV-, the positive pole of set of cells 100 be sequentially connected in series the second tripper F2,
Positive bus-bar HV+ after the contact K3 of current sensing means 400 and the second relay, the anode of diode D1 is connected to current detecting dress
Putting one end of 400, the negative electrode of diode D1 is connected to positive bus-bar HV+.Two cradle 210 charging paths that formed in parallel, charging
Branch road is connected to the contact K3 of the second relay after being sequentially connected in series the contact K2 and the first tripper F3 of the first relay.
When each set of cells is charged by needs, charging gun is coordinated with each cradle grafting, afterwards, control each
Individual first relay powers on, the contact K2 Guan Bi of the first relay, controls each second relay simultaneously and is in off-position, the
The contact K3 of two relays disconnects, and so, charging controlling brancher forms closed-loop path with set of cells 100, it is achieved to set of cells 100
Charging process.When each set of cells charging complete, controlling the first relay power-off, the contact K2 of the first relay disconnects.
When dynamical system and/or high pressure auxiliary equipment etc. are powered by needs, first determine whether the electric discharge electricity of two set of cells
Pressure, specifically, when the discharge voltage of two set of cells 100 is identical, diode D1 corresponding to two set of cells is both turned on, two
Set of cells is powered to dynamical system etc. by diode D1 simultaneously.When the discharge voltage of two set of cells 100 is different, and the left side
When the discharge voltage of the first set of cells is more than the discharge voltage of second set of cells on the right, then according to the conducting principle of diode,
The diode D1 that first set of cells on the left side is corresponding preferentially turns on, and the first set of cells is preferentially powered to dynamical system etc., until two
The discharge voltage of individual set of cells is identical, then powers to dynamical system etc. simultaneously.
Afterwards, the discharge current of each set of cells 100 that electric power controller transmits according to current sensing means, sentence respectively
Whether the discharge current of each set of cells disconnected is more than or equal to predetermined current, and/or the Guan Wen of diode corresponding to set of cells is
No more than or equal to preset temperature.When the discharge current of set of cells is more than or equal to predetermined current, and/or set of cells corresponding two
When the Guan Wen of pole pipe is more than or equal to preset temperature, then control the second relay Guan Bi that set of cells is corresponding.Otherwise, then electricity is controlled
Second relay corresponding to pond group is off.
Present invention also offers a kind of electric automobile, including the electric automobile fast charging and discharging system of any of the above-described embodiment
System.
Additionally, as in figure 2 it is shown, the invention provides the method for quickly charging and discharging of a kind of electric automobile, comprise the steps:
S100, the first relay controlled in multiple charging assembly all close, with by multiple charging guns and multiple chargings
The grafting of seat coordinates, and is charged multiple set of cells simultaneously；When detect charging gun insert cradle 210 time, then control with
First relay corresponding to each set of cells all closes, now, and charging assembly 200 that each set of cells is corresponding and set of cells 100
Form closed-loop path, by charging gun, set of cells 100 is charged.In the present embodiment, by controlling multiple first relays
It is closed at, electrokinetic cell is charged by multiple charging guns simultaneously, such that it is able to the big electric current realizing electrokinetic cell is fast
Speed charging, saves the charging interval.
Specifically, two set of cells 100 all use the mode of double charging gun charging, during charging, can use
Four rated current are that car load electrokinetic cell is charged by the charging gun of 250A simultaneously so that the charging of each set of cells 100
Electric current can be up to 500A, and the charging current of system is the highest may be up to 1000A, it is achieved thereby that the asking of big electric current quick charge
Topic, and then can effectively reduce the quantity of charging pile, save the occupation of land of charging vehicle, improve the service efficiency of electric automobile.?
In other embodiments, each charging assembly 200 can also be arranged in parallel plural cradle 210.
Meanwhile, in the charging process of each set of cells, owing to diode has each set of cells of characteristic of reversely cut-off
Between 100 can not circulating current, such that it is able to reach the purpose of each set of cells 100 charge independence, thoroughly solve each electricity
Charging ring flow problem between pond group 100.
Afterwards, judge whether the electricity of each set of cells 100 reaches to preset electricity, and wherein, default electricity can be respectively
Electricity percentage ratio is equal to 100%.The most i.e. when the electricity of set of cells 100 reaches to preset electricity, then this set of cells 100 is described
Completing charging, now perform step S200, the first relay controlling set of cells 100 correspondence disconnects, and set of cells is corresponding by it
Diode current flow electric discharge, i.e. dynamical system and/or high pressure auxiliary equipment are powered by set of cells 100 by diode D1.Otherwise,
Illustrate that set of cells 100 is also not fully complete charging process, then the first relay controlling set of cells corresponding is still within closure state, directly
Electricity to set of cells is equal to preset electricity.
In the discharge process of each set of cells 100, when the discharge voltage of each set of cells 100 is consistent, each battery
The diode D1 of group correspondence simultaneously turns on, and each set of cells 100 passes through diode D1 to high pressure auxiliary equipment or dynamical system simultaneously
System power supply, will not produce electric discharge circulation between each set of cells 100.When the discharge voltage of each set of cells 100 is inconsistent, root
According to the characteristic of diode, the diode D1 of set of cells 100 correspondence that discharge voltage is higher first turns on, automatic preferential discharge, this
Time, the diode D1 of set of cells 100 correspondence that discharge voltage is relatively low is in cut-off state, therefore, between each set of cells 100 also
Electric discharge circulation will not be produced, thus solve the electric discharge circulation problem between each set of cells 100 by diode D1.
In one embodiment, said method also comprises the steps:
The discharge current of S300, in real time each set of cells 100 of acquisition；In the present embodiment, can be by being arranged on each electricity
Hall transformer at the positive pole of pond group 100 detects the discharge current of each set of cells 100 in real time；
S400, judge that the discharge current of each set of cells 100 whether more than or equal to predetermined current, the most then can respectively
The diode D1 caloric value causing this set of cells 100 correspondence is excessive, now, performs step S600, controls set of cells 100 correspondence
Second relay Guan Bi, makes the diode D1 of this set of cells 100 correspondence be in short-circuit condition, thus avoids diode D1 because of circulation
Big electric current and caloric value is excessive, it is ensured that the safety of this charge-discharge system.If it is not, i.e. set of cells 100 discharge current less than preset
Electric current, now, returns step S300, and the second relay i.e. controlling set of cells 100 correspondence is off, and can continue to lead to
Cross diode D1 dynamical system and high pressure auxiliary equipment are powered.Wherein, predetermined current can be the reverse cut-off of diode D1
Electric current.
In one embodiment, said method also comprises the steps:
The Guan Wen of S300, in real time the diode D1 that each set of cells of acquisition is corresponding；
S500, judge that the Guan Wen of each diode D1 whether more than or equal to preset temperature, the most then illustrates possibility respectively
The caloric value causing the diode D1 of this set of cells 100 correspondence is excessive, now, then performs step S600, controls set of cells corresponding
Second relay Guan Bi, make the diode D1 of this set of cells 100 correspondence be in short-circuit condition, thus ensure this charge-discharge system
Safety.If it is not, then return step S300, i.e. control second relay corresponding with set of cells and be off, Ke Yiji
Continue and by diode D1, dynamical system and high pressure auxiliary equipment are powered.
Or, when the discharge current of set of cells 100 is more than or equal to predetermined current and the pipe of diode corresponding to set of cells
When temperature is more than or equal to preset temperature, perform step S600, control the second relay Guan Bi that set of cells is corresponding, make this set of cells
Corresponding diode D1 is in short-circuit condition, thus ensures the safety of this discharge system.Otherwise, return step S300, i.e. control
Second relay corresponding with set of cells is off, and can continue through diode D1 and assist dynamical system and high pressure
Equipment is powered.
Wherein, the charging/discharging thereof of above-mentioned electric automobile is consistent with the operation principle of above-mentioned charge-discharge system, specifically can join
Description in seeing above.
Electric automobile fast charging and discharging system, method and the electric automobile of the present invention, by multiple charging assemblies with multiple
Set of cells set-up mode one to one, it is possible to realize each set of cells and independently carry out discharge and recharge, can pass through multiple charging guns
The electrokinetic cell of car load is charged, such that it is able to realize the big electric current quick charge of electrokinetic cell simultaneously；And by setting
Put the discharge and recharge circulation problem that diode can thoroughly solve in system charge and discharge process between set of cells, it is ensured that security of system can
The operation leaned on.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an electric automobile fast charging and discharging system, it is characterised in that including:
Multiple set of cells；
The multiple charging assemblies arranged with multiple described set of cells one_to_one corresponding, each described charging assembly all includes the first relay
Device and cradle, described first relay of described cradle series connection forms charging controlling brancher, the one of described charging controlling brancher
End connects the positive pole of corresponding set of cells, and the other end of described charging controlling brancher connects the negative pole of described set of cells, described battery
The negative pole of group is connected to negative busbar；
The multiple discharge assemblies arranged with multiple described set of cells one_to_one corresponding, each described discharge assembly all includes diode,
The anode of described diode connects the positive pole of described set of cells, and the negative electrode of described diode is connected to described positive bus-bar；And
For the electric power controller controlling described charging assembly and described discharge assembly is turned on and off.
Electric automobile fast charging and discharging system the most according to claim 1, it is characterised in that for each described charging group
Part, the quantity of described cradle is multiple, the charging paths that formed in parallel, the series connection of described charging paths between multiple described cradles
Described first relay forms described charging controlling brancher.
Electric automobile fast charging and discharging system the most according to claim 1, it is characterised in that each described discharge assembly is also
Including the second relay, one end of described second relay connects the positive pole of corresponding described set of cells, described second relay
The other end is connected to positive bus-bar.
Electric automobile fast charging and discharging system the most according to claim 1, it is characterised in that also include for detection in real time
Multiple current sensing means of the discharge current of described set of cells, multiple described current sensing means and described set of cells one a pair
Should arrange；Described current sensing means is arranged in series in the positive pole of corresponding set of cells, and described current sensing means is connected to
Described electric power controller.
5. according to the electric automobile fast charging and discharging system described in any one of claim 1-4, it is characterised in that described battery
The quantity of group, described charging assembly and described discharge assembly is two, and cradle described in each described charging assembly
Quantity is two.
Electric automobile fast charging and discharging system the most according to claim 5, it is characterised in that in each described charging assembly
Also include the first tripper, after described charging controlling brancher described first tripper of series connection, connect corresponding described set of cells
Positive pole.
7. an electric automobile, it is characterised in that include the electric automobile fast charging and discharging system described in any one of claim 1-6
System.
8. the method for quickly charging and discharging of an electric automobile, it is characterised in that comprise the steps:
The first relay controlled in multiple charging assembly all closes, and joins with the grafting by multiple charging guns with multiple cradles
Close, multiple set of cells are charged simultaneously；
Judge whether the electricity of each set of cells reaches to preset electricity respectively, the most then control the first relay that set of cells is corresponding
Device disconnects, and described set of cells is discharged by the diode current flow of its correspondence；If it is not, then control the first relay that set of cells is corresponding
It is in closure state.
Method for quickly charging and discharging the most according to claim 8, it is characterised in that described method also comprises the steps:
Obtain the discharge current of each described set of cells in real time；
Judge that the discharge current of each described set of cells whether more than or equal to predetermined current, the most then controls described electricity respectively
The second relay Guan Bi that pond group is corresponding；If it is not, the second relay then controlling described set of cells corresponding is off.
Method for quickly charging and discharging the most according to claim 8 or claim 9, it is characterised in that described method also includes walking as follows
Rapid:
Obtain the Guan Wen of diode corresponding to each described set of cells in real time；
Judge that the Guan Wen of each diode whether more than or equal to preset temperature, the most then controls described set of cells corresponding respectively
Second relay Guan Bi；If it is not, the second relay then controlling described set of cells corresponding is off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610723075.1A CN106300514A (en) | 2016-08-25 | 2016-08-25 | Electric automobile fast charging and discharging system, method and electric automobile |
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| CN201610723075.1A CN106300514A (en) | 2016-08-25 | 2016-08-25 | Electric automobile fast charging and discharging system, method and electric automobile |
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| CN201610723075.1A Pending CN106300514A (en) | 2016-08-25 | 2016-08-25 | Electric automobile fast charging and discharging system, method and electric automobile |
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| CN107706992A (en) * | 2017-11-06 | 2018-02-16 | 浙江力俭新能源科技有限公司 | A kind of conservation of energy energy storage conversion equipment |
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| CN111572400A (en) * | 2020-05-20 | 2020-08-25 | 深圳市科华恒盛科技有限公司 | Charging control method and device applied to electric automobile |
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| CN114200193A (en) * | 2021-10-29 | 2022-03-18 | 东风商用车有限公司 | Device and method for testing impact current of negative bus of electric automobile |
| CN114200193B (en) * | 2021-10-29 | 2024-01-19 | 东风商用车有限公司 | Device and method for testing impact current of negative bus of electric automobile |
| CN114336879A (en) * | 2022-01-06 | 2022-04-12 | 广州小鹏汽车科技有限公司 | Battery circuit, battery management system, battery module and electric automobile |
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Application publication date: 20170104 |