CN106740239A - A kind of charging circuit, charging method and electric automobile - Google Patents
A kind of charging circuit, charging method and electric automobile Download PDFInfo
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- CN106740239A CN106740239A CN201710102367.8A CN201710102367A CN106740239A CN 106740239 A CN106740239 A CN 106740239A CN 201710102367 A CN201710102367 A CN 201710102367A CN 106740239 A CN106740239 A CN 106740239A
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- insulated gate
- voltage
- gate bipolar
- bipolar transistor
- circuit
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Classifications
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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
- 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
- B60L53/20—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 characterised by converters located in the vehicle
-
- 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
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
-
- 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
- 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
-
- 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
Abstract
The invention provides a kind of charging circuit, charging method and electric automobile, the charging circuit includes：The translation circuit being connected with mains-power circuit；One end is connected with the translation circuit, the process circuit that the other end is connected with electrokinetic cell；Sample circuit for gathering the first voltage at the translation circuit two ends and the second voltage at the electrokinetic cell two ends, the sample circuit is connected with the process circuit.The charging circuit can realize that the maximum in electrokinetic cell bears to charge electrokinetic cell under voltage, it is ensured that electrokinetic cell will not be damaged because of overvoltage；When the DC voltage for exporting electrokinetic cell feeds back to power network, can be born under voltage in the maximum of multiple insulated gate bipolar transistors, with the most fast time by Voltage Feedback to mains-power circuit.
Description
Technical field
The present invention relates to automobile charging field, especially a kind of charging circuit, charging method and automobile.
Background technology
Bidirectional electric automobile inversion charging Vehicle-to-grid (abbreviation V2G), when electric motor car is not when running,
By being connected to the electro-motor (insulated gate bipolar transistor (IGBT) module) of power network by energy back to power network, anti-mistake
Come, when the battery of electric motor car needs to charge, electric current can be extracted from power network and be given to battery.
When electric motor car passes through grid charging, it is direct current that three-phase alternating current is needed by IGBT module rectification, and is passed through
Voltage is adjusted to be suitably for boosting (BOOST)/step-down (BUCK) circuit the scope of power battery charging.At the same time, when filling
When piezoelectric voltage exceedes the ceiling voltage of electrokinetic cell, electrokinetic cell has the risk of damage.
When electric motor car is not when running, by electrokinetic cell energy back to power network, it is necessary to electrokinetic cell voltage is led to
Cross the voltage range that voltage boosting/lowering circuit is adjusted to be adapted to IGBT inversions.At the same time, when voltage bears electricity more than IGBT maximums
During pressure, IGBT module has the risk of damage.
The content of the invention
The embodiment of the present invention technical problem to be solved is to provide a kind of charging circuit, charging method and electric automobile, uses
To realize charging electrokinetic cell with the ceiling voltage less than electrokinetic cell；And with less than insulated gate bipolar transistor
Highest bear voltage by the Voltage Feedback of electrokinetic cell to power network.
In order to solve the above technical problems, charging circuit provided in an embodiment of the present invention, including：
The translation circuit being connected with mains-power circuit；
One end is connected with the translation circuit, the process circuit that the other end is connected with electrokinetic cell；
Sampling for gathering the first voltage at the translation circuit two ends and the second voltage at the electrokinetic cell two ends
Circuit, the sample circuit is connected with the process circuit, and the sample circuit controls the treatment by the first voltage
Circuit is processed the DC voltage after the translation circuit carries out rectification, and controls institute by the second voltage
Process circuit is stated to process the DC voltage that the electrokinetic cell is exported.
Preferably, the translation circuit includes：
The first insulated gate bipolar transistor and the second insulated gate bipolar crystal being connected with the first of mains-power circuit
Pipe；
The 3rd insulated gate bipolar transistor and the 4th insulated gate bipolar crystal being connected with the second of mains-power circuit
Pipe；
The 5th insulated gate bipolar transistor being connected with the third phase of mains-power circuit and the 6th insulated gate bipolar crystal
Pipe；Wherein,
First insulated gate bipolar transistor, the second insulated gate bipolar transistor, the 3rd insulated gate bipolar
Transistor npn npn, the 4th insulated gate bipolar transistor, the 5th insulated gate bipolar transistor and the 6th insulation
Grid bipolar transistor is connected with the sample circuit.
Preferably, first insulated gate bipolar transistor and second insulated gate bipolar transistor and the electricity
First switch S and the first inductance are provided between first phase of net circuit；
3rd insulated gate bipolar transistor and the 4th insulated gate bipolar transistor and the mains-power circuit
The second phase between be provided with second switch S and the second inductance；
5th insulated gate bipolar transistor and the 6th insulated gate bipolar transistor and the mains-power circuit
Third phase between be provided with the 3rd switch S and the 3rd inductance.
Preferably, the process circuit includes：
The 7th insulated gate bipolar transistor and the 8th insulated gate bipolar transistor being connected with each other, the four-line poem with seven characters to a line edge
Grid bipolar transistor respectively with first insulated gate bipolar transistor, the 3rd insulated gate bipolar transistor and pentasyllabic quatrain
Edge grid bipolar transistor connect, the 8th insulated gate bipolar transistor respectively with the second insulated gate bipolar crystal
The connection of pipe, the 4th insulated gate bipolar transistor and the 6th insulated gate bipolar transistor；
4th inductance, connects with the 7th insulated gate bipolar transistor and the 8th insulated gate bipolar transistor respectively
Connect；
Parallel with one another is set between the 3rd electric capacity in parallel with electrokinetic cell, and the 3rd electric capacity and electrokinetic cell
Five switch S, the 6th switch S, the 7th switch S；The 6th switch S is connected by first resistor with the electrokinetic cell；It is described
3rd electric capacity is connected with the 4th inductance and the 8th insulated gate bipolar transistor respectively, the 5th switch S, described
6th switch S respectively with the 4th inductance connection.
Preferably, the sample circuit includes：
Relay；
The sampler being connected with the relay；
The signal processor being connected with the sampler；
The controller being connected with the signal processor, the controller and the 7th insulated gate bipolar transistor and
The 8th insulated gate bipolar transistor connection；
And the first voltage sensor and second voltage sensor being detachably connected with the relay, first electricity
Pressure sensor is in parallel with the 3rd electric capacity, the first end of the second voltage sensor respectively with first insulated gate bipolar
Transistor npn npn, the 3rd insulated gate bipolar transistor, the 5th insulated gate bipolar transistor and the 7th insulated gate bipolar transistor
Pipe is connected, and the second end is insulated with second insulated gate bipolar transistor, the 4th insulated gate bipolar transistor, the 6th respectively
Grid bipolar transistor and the 8th insulated gate bipolar transistor are connected.
Preferably, the charging circuit also includes：
The first electric capacity and the second electric capacity being connected with each other, first electric capacity are brilliant with first insulated gate bipolar respectively
Body pipe, the 3rd insulated gate bipolar transistor, the 5th insulated gate bipolar transistor and the 7th insulated gate bipolar transistor connect
Connect, second electric capacity respectively with second insulated gate bipolar transistor, the 4th insulated gate bipolar transistor, the 6th exhausted
Edge grid bipolar transistor, the 8th insulated gate bipolar transistor, the 3rd electric capacity and the 7th switch S connections.
Preferably, the neutral conductor of the mains-power circuit by one the 4th switch S respectively with first electric capacity and described the
Two capacitance connections.
Another aspect according to embodiments of the present invention, the embodiment of the present invention additionally provides a kind of electric automobile, including：As above
The charging circuit stated.
According to another aspect of the present invention, the embodiment of the present invention additionally provides a kind of charging method of charging circuit, application
In above-mentioned charging circuit, including：
When being charged to electrokinetic cell, first electricity at the electrokinetic cell two ends is gathered by the sample circuit
Pressure, and control the process circuit to be pressed into the direct current after the translation circuit carries out rectification according to the first voltage
Row step-down is processed；
Controlling the process circuit will transmit to the electrokinetic cell by the DC voltage of step-down treatment；
When not charged to electrokinetic cell, second electricity at the translation circuit two ends is obtained by the sample circuit
Pressure, and the DC voltage that the electrokinetic cell is exported is carried out at boosting according to the second voltage control process circuit
Reason；
Controlling the translation circuit carries out inversion treatment to the DC voltage by boosting treatment, and controls the conversion electricity
The AC voltages transmission that road obtains after inversion is processed is to the mains-power circuit.
Preferably, it is described the electrokinetic cell two ends are gathered by the sample circuit first voltage the step of include：
Control relay is connected with first voltage sensor, and the 3rd electric capacity two ends are gathered by the first voltage sensor
Voltage.
Preferably, it is described the translation circuit two ends are obtained by the sample circuit second voltage the step of include：
Control relay is connected with second voltage sensor, and the translation circuit is gathered by the second voltage sensor
The second voltage at two ends.
Preferably, it is described that the process circuit is controlled to carrying out rectification by the translation circuit according to the first voltage
The step of DC voltage afterwards carries out step-down treatment includes：
Judge the size of the first voltage and the first preset voltage value；
When the first voltage is more than first preset voltage value, after controlling the process circuit to carry out rectification
The magnitude of voltage of DC voltage is reduced to the first predetermined voltage range, and the maximum of first predetermined voltage range is less than or waits
In first preset voltage value.
Preferably, the direct current for controlling the process circuit to export the electrokinetic cell according to the second voltage
The step of pressure carries out boosting treatment includes：
Determine the difference between the second voltage and the second preset voltage value, when the difference is more than preset difference value,
Control the process circuit that the DC voltage that the electrokinetic cell is exported is increased into the second preset range, the described second default model
The maximum enclosed is less than or equal to second preset voltage value.
Compared with prior art, charging circuit provided in an embodiment of the present invention, charging method and electric automobile, at least have
Following beneficial effect：
The maximum that can be realized in electrokinetic cell bears to charge electrokinetic cell under voltage, it is ensured that electrokinetic cell will not
Damaged because of overvoltage；When the DC voltage for exporting electrokinetic cell feeds back to mains-power circuit, can be in multiple insulated gate bipolars
The maximum of transistor npn npn is born under voltage, with the most fast time by Voltage Feedback to mains-power circuit.
Brief description of the drawings
Fig. 1 is the structural representation of the charging circuit described in the embodiment of the present invention；
Fig. 2 is the electrical block diagram of the charging circuit described in the embodiment of the present invention；
Circuits of the Fig. 3 for the charging circuit described in the embodiment of the present invention when to power battery charging moves towards schematic diagram；
Circuits of the Fig. 4 for the charging circuit described in the embodiment of the present invention when not to power battery charging moves towards schematic diagram；
Fig. 5 is the structural representation of the charging method of the charging circuit described in the embodiment of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.In the following description, there is provided such as specific configuration is only with the specific detail of component
In order to help comprehensive understanding embodiments of the invention.Therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without deviating from scope and spirit of the present invention.In addition, for clarity and brevity, it is right to eliminate
The description of known function and construction.
Reference picture 1, the embodiment of the invention provides a kind of charging circuit, including：
The translation circuit 2 being connected with mains-power circuit 1；
One end is connected with the translation circuit 2, the process circuit 5 that the other end is connected with electrokinetic cell 4；
For gathering adopting for the first voltage at the two ends of the translation circuit 2 and the second voltage at the two ends of the electrokinetic cell 4
Sample circuit 3, the sample circuit 3 is connected with the process circuit 5, and the sample circuit 5 controls institute by the first voltage
5 pairs of DC voltages after the translation circuit 2 carries out rectification of process circuit are stated to process, and by the described second electricity
The DC voltage of voltage-controlled system 5 pairs of outputs of the electrokinetic cell 4 of process circuit is processed.
The charging circuit of the embodiment of the present invention includes the first state that is charged to electrokinetic cell 4 and by electrokinetic cell 4
Voltage Feedback to mains-power circuit 1 the second state.
In the first state, sample circuit 3 is acquired by the voltage to the two ends of electrokinetic cell 4, it is determined that transmitting to dynamic
Whether the voltage of power battery 4 is over-pressed, when it is determined that when over-pressed, being controlled by process circuit 5 so that 5 pairs of changes of process circuit
The DC voltage changed after the rectification of circuit 2 be depressured after being transferred to electrokinetic cell 4, and then realization is charged to electrokinetic cell 4
When, it is to avoid cause the situation of the damage of electrokinetic cell 4 because of overvoltage.
In the second condition, sample circuit 3 is by gathering the voltage at the two ends of translation circuit 2, and then determines to transmit to conversion
Whether the voltage of circuit 2 is over-pressed, when it is determined that when over-pressed, being controlled by process circuit 5 so that process circuit 5 is to power
The DC voltage of the transmission of battery 4 is transmitted further to insulated gate bipolar transistor after being depressured, realization prevents insulated gate bipolar
The situation that transistor is damaged because of overvoltage occurs.
Preferably, in this hair embodiment, to Fig. 4, the translation circuit 2 includes reference picture 2：
The first insulated gate bipolar transistor U1 being connected with the first of mains-power circuit 1 and the second insulated gate bipolar are brilliant
Body pipe U2；
The 3rd insulated gate bipolar transistor U3 being connected with the second of mains-power circuit 1 and the 4th insulated gate bipolar are brilliant
Body pipe U4；
The 5th insulated gate bipolar transistor U5 being connected with the third phase of mains-power circuit 1 and the 6th insulated gate bipolar are brilliant
Body pipe U6；Wherein,
The first insulated gate bipolar transistor U1, the second insulated gate bipolar transistor U2, the 3rd insulated gate
Bipolar transistor U3, the 4th insulated gate bipolar transistor U4, the 5th insulated gate bipolar transistor U5 and institute
The 6th insulated gate bipolar transistor U6 is stated to be connected with the sample circuit 3.
Specifically, when being charged to electrokinetic cell 4, by controlling the first above-mentioned insulated gate bipolar transistor U1,
Three insulated gate bipolar transistor U3 and the 5th insulated gate bipolar transistor U5 are in normally opened state, by multiple insulated gates
The diode of bipolar transistor realizes the rectification to alternating current.
When by the Voltage Feedback of electrokinetic cell 4 to mains-power circuit 1, by the first above-mentioned insulated gate bipolar transistor
The insulated gate bipolar transistor U6 of U1 to the 6th altogether realize carrying out DC voltage inversion by 6 parts, and is transmitted separately to electricity
The three-phase of net circuit 1.
Also, the maximum of the first above-mentioned insulated gate bipolar transistor U6 of insulated gate bipolar transistor U1 to the 6th is held
It is identical by magnitude of voltage.
Preferably, in this hair embodiment, reference picture 2 to Fig. 4, the first insulated gate bipolar transistor U1 and described
First switch S1 and the first inductance are provided between second insulated gate bipolar transistor U2 and the first phase of the mains-power circuit 1
L1；
The 3rd insulated gate bipolar transistor U3 and the 4th insulated gate bipolar transistor U4 and the power network
Second switch S2 and the second inductance L2 is provided between second phase of circuit 1；
The 5th insulated gate bipolar transistor U5 and the 6th insulated gate bipolar transistor U6 and the power network
The 3rd switch S3 and the 3rd inductance L3 is provided between the third phase of circuit 1.
Specifically, herein, the first inductance L1, the second inductance L2 and the 3rd inductance L3 are for being exported to mains-power circuit 1
Alternating current or insulated gate bipolar transistor transmission alternating current be filtered after be transferred to corresponding circuit.
Preferably, in embodiments of the present invention, to Fig. 4, the process circuit 5 includes reference picture 2：
The 7th insulated gate bipolar transistor U7 and the 8th insulated gate bipolar transistor U8 being connected with each other, the described 7th
Insulated gate bipolar transistor U7 respectively with the first insulated gate bipolar transistor U1, the 3rd insulated gate bipolar transistor
U3 and the 5th insulated gate bipolar transistor U5 is connected, and the 8th insulated gate bipolar transistor U8 is exhausted with described second respectively
Edge grid bipolar transistor U2, the 4th insulated gate bipolar transistor U4 and the 6th insulated gate bipolar transistor U6
Connection；
4th inductance L4, respectively with the 7th insulated gate bipolar transistor U7 and the 8th insulated gate bipolar transistor
U8 is connected；
Set between the 3rd electric capacity C3 in parallel with electrokinetic cell 4, and the 3rd electric capacity C3 and electrokinetic cell 4 mutually simultaneously
5th switch S6 of connection, the 6th switch S6, the 7th switch S7；The 6th switch S6 passes through first resistor R1 and the power electric
Pond 4 connects；The 3rd electric capacity C3 is connected with the 4th inductance L4 and the 8th insulated gate bipolar transistor U8 respectively,
The 5th switch S5, the 6th switch S6 are connected with the 4th inductance L4 respectively.
The 7th above-mentioned switch S7 plays a part of master switch, unlatching and closure by the 7th switch S7, controls power
Path or disconnection are formed between battery 4 and mains-power circuit 1.
When being charged to electrokinetic cell 4, by the first insulated gate bipolar transistor U1, the 3rd insulated gate bipolar
DC voltage after transistor U3 and the 5th insulated gate bipolar transistor U5 rectifications passes through the 7th insulated gate bipolar transistor
U7, the 4th inductance L4 and the 3rd electric capacity C3 are depressured, and are transmitted further to electrokinetic cell 4.
When by the Voltage Feedback of electrokinetic cell 4 to mains-power circuit 1, first by the 8th insulated gate bipolar transistor U8
DC voltage to the output of electrokinetic cell 4 carries out boosting to the multiple insulated gate bipolar transistors met in translation circuit 2
Maximum bears be transferred to translation circuit 2 after in voltage range.
When being charged to electrokinetic cell 4, the switches of switch S5 and the 7th of switch S4 and the 5th of first switch S1 to the 4th S7
Closure, the 6th switch S6 disconnects, the second insulated gate bipolar transistor U2, the 4th insulated gate bipolar transistor U4, the 6th exhausted
Edge grid bipolar transistor U6 and the 8th insulated gate bipolar crystal U8 states of the pipe in closing.Under this kind of state, the 3rd
Electric capacity C3 is in state in parallel with electrokinetic cell 4, therefore, the acquisition to the voltage at the 3rd electric capacity C3 two ends is represented to dynamic
The acquisition of the voltage at the two ends of power battery 4.
Specifically, when by the Voltage Feedback of electrokinetic cell 4 to mains-power circuit 1, the 7th insulated gate bipolar transistor U7
In normally opened state, i.e., equivalent to the effect of wire；First switch S1 to the 4th switchs the switches of S4 and the 7th S7 and is in
The state of closure.And be then the first the 6th switch S6 closures for the 5th switch S5 and the 6th switch S6, the 5th switch S5 breaks
Open, with the voltage output of electrokinetic cell 4 so that the voltage at the 3rd electric capacity C3 two ends gradually rises, at the 3rd electric capacity C3 two ends
Voltage be increased to a stationary value after, then by the 5th switch S5 closure, the 6th switch S6 disconnect.The mode of this kind of switching, be for
The voltage of the output of electrokinetic cell 4 is carried out after voltage stabilizing in output to the 8th insulated gate bipolar transistor U8.
Preferably, the sample circuit 3 includes：
Relay；
The sampler being connected with the relay；
The signal processor being connected with the sampler；
The controller being connected with the signal processor, the controller and the 7th insulated gate bipolar transistor U7
Connected with the 8th insulated gate bipolar transistor U8；
And the first voltage sensor and second voltage sensor being detachably connected with the relay, first electricity
Pressure sensor is in parallel with the 3rd electric capacity C3, and the first end of the second voltage sensor is double with first insulated gate respectively
Bipolar transistor U1, the 3rd insulated gate bipolar transistor U3, the 5th insulated gate bipolar transistor U5 and the 7th insulated gate are double
Bipolar transistor U7 is connected, and the second end is brilliant with the second insulated gate bipolar transistor U2, the 4th insulated gate bipolar respectively
Body pipe U4, the 6th insulated gate bipolar transistor U6 and the 8th insulated gate bipolar transistor U8 are connected.
In embodiments of the present invention, controller is also connected with the 5th switch S5 and the 6th switch S6, by controller come real
Cutting to the open and-shut mode of the 5th switch S5 and the 6th switch S6 during now by the Voltage Feedback of electrokinetic cell 4 to mains-power circuit 1
Change.
When being charged to electrokinetic cell 4, relay is connected with first voltage sensor, and sampler is by the first electricity
The voltage of pressure sensor detection gets the voltage at the 3rd electric capacity C3 two ends；Power network electricity is being given by the Voltage Feedback of electrokinetic cell 4
During road 1, relay is connected with second voltage sensor, and sampler gets the two ends of translation circuit 2 by first voltage sensor
Voltage.Sampler is transferred at signal after the voltage for getting first voltage sensor or the collection of second voltage sensor
Reason device, signal processor is transferred to controller (herein, controller is the MCU of automobile) after signal condition is carried out to first voltage,
Controller judges by the voltage for collecting, it is determined whether need process circuit 5 to the direct current after the rectification of translation circuit 2
Voltage is depressured or the DC voltage that electrokinetic cell 4 is transmitted is boosted.
Preferably, in embodiments of the present invention, to Fig. 4, the charging circuit also includes reference picture 2：
The first electric capacity C1 being connected with each other and the second electric capacity C2, the first electric capacity C1 are double with first insulated gate respectively
Bipolar transistor U1, the 3rd insulated gate bipolar transistor U3, the 5th insulated gate bipolar transistor U5 and the 7th insulated gate are double
Bipolar transistor U7 connect, the second electric capacity C2 respectively with the second insulated gate bipolar transistor U2, the 4th insulated gate
Bipolar transistor U4, the 6th insulated gate bipolar transistor U6, the 8th insulated gate bipolar transistor U8, the 3rd electric capacity
C3 and the 7th switch S7 connections.
Herein, when being charged to electrokinetic cell 4, due to the direct current obtained by insulated gate bipolar transistor rectification
The not stable straight line of waveform of electricity, after being filtered by the first electric capacity C1 and the second electric capacity C2 so that obtained through over commutation
Direct current can be more steady.
Preferably, the neutral conductor of the mains-power circuit 1 by one the 4th switch S4 respectively with the first electric capacity C1 and institute
State the second electric capacity C2 connections.
Another aspect according to embodiments of the present invention, the embodiment of the present invention additionally provides a kind of electric automobile, including：As above
The charging circuit stated.
According to another aspect of the present invention, the embodiment of the present invention additionally provides a kind of charging method of charging circuit, application
In above-mentioned charging circuit, including：
Step 1, when being charged to electrokinetic cell 4, the two ends of the electrokinetic cell 4 is gathered by the sample circuit 3
First voltage；
Step 2, according to the first voltage control process circuit 5 pairs after the translation circuit 2 carries out rectification
DC voltage carry out step-down treatment；
Step 3, controls the process circuit 5 to be transmitted to the electrokinetic cell 4 by the DC voltage of step-down treatment；
Step 4, when not charged to electrokinetic cell 4,2 liang of the translation circuit is obtained by the sample circuit 3
The second voltage at end；
Step 5,5 pairs of DC voltages of the output of the electrokinetic cells 4 of the process circuit are controlled according to the second voltage
Carry out boosting treatment；
Step 6, controls 2 pairs of DC voltages by boosting treatment of the translation circuit to carry out inversion treatment, and control institute
The AC voltages transmission obtained after translation circuit 2 processes inversion is stated to the mains-power circuit 1.
In above-mentioned steps 1, because the resistance of first resistor R1 is very small, the voltage of the 3rd electric capacity C3 by that will obtain is near
Like the voltage as the two ends of electrokinetic cell 4.
It is expressed as the Voltage Feedback of electrokinetic cell 4 extremely when in step 4, for not charged to electrokinetic cell 4
State in mains-power circuit 1.
By the acquisition to first voltage, judge whether input exceedes the maximum of electrokinetic cell 4 to the voltage of electrokinetic cell 4
Bear voltage, and then voltage to being input into electrokinetic cell 4 is controlled, and reaches the purpose protected to electrokinetic cell 4.
By the acquisition to second voltage, judge whether output to the voltage of translation circuit 2 exceedes insulated gate bipolar brilliant
The maximum of body pipe bears voltage, and then alternating voltage to being input into translation circuit 2 is controlled, and reaches to insulated gate bipolar
The purpose of the protection of transistor.
Preferably, in above-mentioned steps 1, the collection to first voltage mainly includes：
Step 101, control relay is connected with first voltage sensor, and the 3rd is gathered by the first voltage sensor
The voltage at electric capacity C3 two ends.
Because the resistance of the first resistance R1 is very small, electrokinetic cell is approximately used as by the voltage to the 3rd electric capacity C3 two ends
The voltage at 4 two ends.
Preferably, in above-mentioned steps 4, the collection to tertiary voltage mainly includes：
Step 401, control relay is connected with second voltage sensor, gathers described by the second voltage sensor
The second voltage at the two ends of translation circuit 2.
Preferably, in embodiments of the present invention, above-mentioned steps 2 include：
Step 201, judges the size of the first voltage and the first preset voltage value；
Step 202, when the first voltage is more than first preset voltage value, controls the process circuit 5 to enter
The magnitude of voltage of the DC voltage after row rectification is reduced to the first predetermined voltage range, the maximum of first predetermined voltage range
Less than or equal to first preset voltage value.
Herein, the first preset voltage value is the maximum of electrokinetic cell 4 and bears voltage, and it is default in the controller；Right
When electrokinetic cell 4 charges, by the judgement of the first voltage at the two ends to the 3rd electric capacity C3, you can judge input to power electric
Whether the voltage in pond 4 is over-pressed.For example, the maximum of electrokinetic cell 4 bears voltage for 220v, when the numerical value for detecting first voltage is big
When 220v, then it is assumed that the electric voltage over press of output to electrokinetic cell 4, now, by the 7th insulated gate bipolar transistor U7, the
Four inductance L4 are depressured so that the value of the DC voltage of output to electrokinetic cell 4 is less than or equal to 220v.
Preferably, in embodiments of the present invention, step 5 includes：
Step 501, determines the difference between the second voltage and the second preset voltage value, in the difference more than default
During difference, control the process circuit 5 that the DC voltage that the electrokinetic cell 4 is exported is increased into the second preset range, it is described
The maximum of the second preset range is less than or equal to second preset voltage value.
Herein, the second preset voltage value is the first insulated gate bipolar transistors of insulated gate bipolar transistor U1 to the 6th
Maximum in U6 bears magnitude of voltage, if the difference between the second voltage for detecting and the second preset voltage value has been more than preset
During difference, in order that the voltage for obtaining electrokinetic cell 4 can be in very fast time internal feedback to mains-power circuit 1, by the 8th insulated gate
Bipolar transistor U8 boosts to the DC voltage that electrokinetic cell 4 is exported, and then causes output to the first insulated gate bipolar
The DC voltage of the insulated gate bipolar transistor U6 of transistor npn npn U1 to the 6th on the premise of its maximum bears voltage, with most fast
The speed DC voltage inversion that exports electrokinetic cell 4 after transmit to mains-power circuit 1.
By the charging method of charging circuit provided in an embodiment of the present invention, can realize being held in the maximum of electrokinetic cell 4
Electrokinetic cell 4 is charged by under voltage, it is ensured that electrokinetic cell 4 will not be damaged because of overvoltage；What electrokinetic cell 4 was exported
When DC voltage feeds back to power network, can be born under voltage in the maximum of multiple insulated gate bipolar transistors, with it is most fast when
Between by Voltage Feedback to mains-power circuit 1.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (13)
1. a kind of charging circuit, it is characterised in that including：
The translation circuit (2) being connected with mains-power circuit (1)；
One end is connected with the translation circuit (2), the process circuit (5) that the other end is connected with electrokinetic cell (4)；
For gathering adopting for the first voltage at the translation circuit (2) two ends and the second voltage at the electrokinetic cell (4) two ends
Sample circuit (3), the sample circuit (3) is connected with the process circuit (5), and the sample circuit (5) is by the described first electricity
The voltage-controlled system process circuit (5) is processed the DC voltage after the translation circuit (2) carries out rectification, Yi Jitong
Crossing the second voltage controls the process circuit (5) to process the DC voltage that the electrokinetic cell (4) is exported.
2. charging circuit according to claim 1, it is characterised in that the translation circuit (2) includes：
The first insulated gate bipolar transistor (U1) being connected with the first of mains-power circuit (1) and the second insulated gate bipolar are brilliant
Body pipe (U2)；
The 3rd insulated gate bipolar transistor (U3) being connected with the second of mains-power circuit (1) and the 4th insulated gate bipolar are brilliant
Body pipe (U4)；
The 5th insulated gate bipolar transistor (U5) being connected with the third phase of mains-power circuit (1) and the 6th insulated gate bipolar are brilliant
Body pipe (U6)；Wherein,
First insulated gate bipolar transistor (U1), the second insulated gate bipolar transistor (U2), the 3rd insulated gate
Bipolar transistor (U3), the 4th insulated gate bipolar transistor (U4), the 5th insulated gate bipolar transistor
(U5) it is connected with the sample circuit (3) with the 6th insulated gate bipolar transistor (U6).
3. charging circuit according to claim 2, it is characterised in that first insulated gate bipolar transistor (U1) and
Be provided between second insulated gate bipolar transistor (U2) and the first phase of the mains-power circuit (1) first switch (S1) and
First inductance (L1)；
3rd insulated gate bipolar transistor (U3) and the 4th insulated gate bipolar transistor (U4) and the power network
Second switch (S2) and the second inductance (L2) are provided between second phase of circuit (1)；
5th insulated gate bipolar transistor (U5) and the 6th insulated gate bipolar transistor (U6) and the power network
The 3rd switch (S3) and the 3rd inductance (L3) is provided between the third phase of circuit (1).
4. charging circuit according to claim 3, it is characterised in that the process circuit (5) includes：
The 7th insulated gate bipolar transistor (U7) and the 8th insulated gate bipolar transistor (U8) being connected with each other, the described 7th
Insulated gate bipolar transistor (U7) is brilliant with first insulated gate bipolar transistor (U1), the 3rd insulated gate bipolar respectively
Body pipe (U3) and the 5th insulated gate bipolar transistor (U5) are connected, the 8th insulated gate bipolar transistor (U8) respectively with
Second insulated gate bipolar transistor (U2), the 4th insulated gate bipolar transistor (U4) and the 6th insulated gate
Bipolar transistor (U6) is connected；
4th inductance (L4), respectively with the 7th insulated gate bipolar transistor (U7) and the 8th insulated gate bipolar transistor
(U8) connect；
Threeth electric capacity (C3) in parallel with electrokinetic cell (4), and phase is set between the 3rd electric capacity (C3) and electrokinetic cell (4)
Mutually the 5th switch (S6) in parallel, the 6th switch (S6), the 7th switch (S7)；6th switch (S6) passes through first resistor
(R1) it is connected with the electrokinetic cell (4)；3rd electric capacity (C3) respectively with the 4th inductance (L4) and described 8th exhausted
Edge grid bipolar transistor (U8) connect, it is described 5th switch (S5), it is described 6th switch (S6) respectively with the 4th inductance
(L4) connect.
5. charging circuit according to claim 4, it is characterised in that the sample circuit (3) includes：
Relay；
The sampler being connected with the relay；
The signal processor being connected with the sampler；
The controller being connected with the signal processor, the controller and the 7th insulated gate bipolar transistor (U7) and
8th insulated gate bipolar transistor (U8) connection；
And the first voltage sensor and second voltage sensor being detachably connected with the relay, the first voltage biography
Sensor is in parallel with the 3rd electric capacity (C3), the first end of the second voltage sensor respectively with first insulated gate bipolar
Transistor npn npn (U1), the 3rd insulated gate bipolar transistor (U3), the 5th insulated gate bipolar transistor (U5) and four-line poem with seven characters to a line edge
Grid bipolar transistor (U7) connect, the second end respectively with second insulated gate bipolar transistor (U2), the 4th insulated gate
The connection of bipolar transistor (U4), the 6th insulated gate bipolar transistor (U6) and the 8th insulated gate bipolar transistor (U8).
6. charging circuit according to claim 5, it is characterised in that the charging circuit also includes：
Be connected with each other the first electric capacity (C1) and the second electric capacity (C2), first electric capacity (C1) respectively with first insulated gate
Bipolar transistor (U1), the 3rd insulated gate bipolar transistor (U3), the 5th insulated gate bipolar transistor (U5) and the 7th
Insulated gate bipolar transistor (U7) connect, second electric capacity (C2) respectively with second insulated gate bipolar transistor
(U2), the 4th insulated gate bipolar transistor (U4), the 6th insulated gate bipolar transistor (U6), the 8th insulated gate bipolar are brilliant
Body pipe (U8), the 3rd electric capacity (C3) and the 7th switch (S7) connection.
7. charging circuit according to claim 6, it is characterised in that the neutral conductor of the mains-power circuit (1) is by one the
Four switches (S4) are connected with first electric capacity (C1) and second electric capacity (C2) respectively.
8. a kind of electric automobile, it is characterised in that including：Charging circuit as described in any one of claim 1 to 7.
9. a kind of charging method of charging circuit, is applied to the charging circuit described in any one of the claims 1 to 7, and it is special
Levy and be, including：
When being charged to electrokinetic cell (4), the of electrokinetic cell (4) two ends is gathered by the sample circuit (3)
One voltage, and the process circuit (5) is controlled to after the translation circuit (2) carries out rectification according to the first voltage
DC voltage carries out step-down treatment；
Controlling the process circuit (5) will transmit to the electrokinetic cell (4) by the DC voltage of step-down treatment；
When not charged to electrokinetic cell (4), translation circuit (2) two ends are obtained by the sample circuit (3)
Second voltage, and the DC voltage exported to the electrokinetic cell (4) according to the second voltage control process circuit (5)
Carry out boosting treatment；
Controlling the translation circuit (2) carries out inversion treatment to the DC voltage by boosting treatment, and controls the conversion electricity
The AC voltages transmission that road (2) obtains after inversion is processed is to the mains-power circuit (1).
10. the charging method of charging circuit according to claim 9, it is characterised in that described by the sample circuit
(3) the step of first voltage for gathering electrokinetic cell (4) two ends, includes：
Control relay is connected with first voltage sensor, and the 3rd electric capacity (C3) two ends are gathered by the first voltage sensor
Voltage.
The charging method of 11. charging circuits according to claim 9, it is characterised in that described by the sample circuit
(3) the step of second voltage for obtaining translation circuit (2) two ends, includes：
Control relay is connected with second voltage sensor, and the translation circuit (2) is gathered by the second voltage sensor
The second voltage at two ends.
The charging method of 12. charging circuits according to claim 9, it is characterised in that described according to the first voltage
Controlling the process circuit (5) to the DC voltage after the translation circuit (2) carries out rectification be depressured the step for the treatment of
Suddenly include：
Judge the size of the first voltage and the first preset voltage value；
When the first voltage is more than first preset voltage value, after controlling the process circuit (5) rectification will to be carried out
The magnitude of voltage of DC voltage is reduced to the first predetermined voltage range, and the maximum of first predetermined voltage range is less than or waits
In first preset voltage value.
The charging method of 13. charging circuits according to claim 9, it is characterised in that described according to the second voltage
The step of controlling the process circuit (5) that boosting treatment is carried out to the DC voltage that the electrokinetic cell (4) is exported includes：
Determine the difference between the second voltage and the second preset voltage value, when the difference is more than preset difference value, control
The DC voltage that the electrokinetic cell (4) is exported is increased to the second preset range by the process circuit (5), and described second presets
The maximum of scope is less than or equal to second preset voltage value.
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| CN201710102367.8A CN106740239B (en) | 2017-02-24 | 2017-02-24 | A kind of charging circuit, charging method and electric car |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114179642A (en) * | 2021-11-22 | 2022-03-15 | 泉州装备制造研究所 | New energy automobile bidirectional charging and discharging device based on strong robust predictive control algorithm |
| CN115742812A (en) * | 2022-11-15 | 2023-03-07 | 国网河南省电力公司安阳供电公司 | Electric automobile that energy can repay fills electric pile system |
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| CN106740239B (en) | 2019-08-27 |
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