CN113131542A - Charging and discharging device and charging and discharging control method - Google Patents
Charging and discharging device and charging and discharging control method Download PDFInfo
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- CN113131542A CN113131542A CN201911403497.0A CN201911403497A CN113131542A CN 113131542 A CN113131542 A CN 113131542A CN 201911403497 A CN201911403497 A CN 201911403497A CN 113131542 A CN113131542 A CN 113131542A
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- charging
- discharging
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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
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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
- B60L53/60—Monitoring or controlling charging stations
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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
- B60L2260/00—Operating Modes
- B60L2260/10—Temporary overload
- B60L2260/16—Temporary overload of electrical drive trains
- B60L2260/162—Temporary overload of electrical drive trains of electrical cells or capacitors
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- 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
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- 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
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- 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
- Y02T90/12—Electric charging stations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a charging and discharging device and a charging and discharging control method, and relates to the technical field of charging and discharging, wherein the charging and discharging device comprises: a charge and discharge controller; the first working mode switching circuit is connected with a first control signal output end of the charge and discharge controller; the first charging and discharging gun is respectively connected with the charging and discharging controller, the first working mode switching circuit and the external electric automobile; the conversion connector is respectively connected with the charge and discharge controller, the first charge and discharge gun and external equipment; the charging and discharging controller controls the first working mode switching circuit to switch to a corresponding working mode according to the identified type of the external equipment, so that charging or discharging is carried out between the external equipment and the electric automobile. The scheme of the invention realizes the reduction of the production cost on the basis of meeting the charge and discharge requirements of users.
Description
Technical Field
The invention relates to the technical field of charging and discharging, in particular to a charging and discharging device and a charging and discharging method.
Background
Charging piles on the market all possess the rifle that charges at present, still delivers the rifle that charges when selling the car if car enterprise, will lead to the waste of resource, and some car enterprises can deliver charging pile, treasured and V2L equipment etc. of charging when selling the car, lead to comprehensive cost to improve, consequently, how to reduce cost on the basis of satisfying user's demand is the problem that each car enterprise at present urgently need solve.
Disclosure of Invention
The invention aims to provide a charging and discharging device and a charging and discharging control method, so as to solve the problem of high production cost caused by the distribution of charging and discharging equipment for users in the prior art.
In order to achieve the above object, the present invention provides a charge and discharge device comprising:
a charge and discharge controller;
the first working mode switching circuit is connected with a first control signal output end of the charge and discharge controller;
the first charging and discharging gun is respectively connected with the charging and discharging controller, the first working mode switching circuit and the external electric automobile;
the conversion connector is respectively connected with the charge and discharge controller, the first charge and discharge gun and external equipment;
the charging and discharging controller controls the first working mode switching circuit to switch to a corresponding working mode according to the identified type of the external equipment, so that charging or discharging is carried out between the external equipment and the electric automobile.
Optionally, the first charging and discharging gun includes: a first connection confirmation terminal and a second connection confirmation terminal;
the first operating mode switching circuit is connected to the first connection confirmation terminal and the second connection confirmation terminal, respectively.
Optionally, when the first charging and discharging gun is connected to an external electric vehicle, the first connection confirmation end is connected to a connection confirmation line of the external electric vehicle, and the second connection confirmation end is connected to a vehicle control device of the external electric vehicle.
Optionally, the first operating mode switching circuit includes:
a first control end of the first control switch is connected with the first control signal output end, and a first movable contact is connected with a first connection confirmation end of the first charging and discharging gun;
one end of the first resistor is connected with the first stationary contact of the first control switch, and the other end of the first resistor is connected with the second connection confirmation end of the first charge-discharge gun;
one end of the second resistor is connected with the second stationary contact of the first control switch, and the other end of the second resistor is connected with the second connection confirmation end of the first charge-discharge gun;
the charging and discharging controller controls the first movable contact to be connected with the first fixed contact or the second fixed contact according to the type of the external equipment.
Alternatively to this, the first and second parts may,
if the charging and discharging controller identifies that the external equipment is a conversion plug, controlling the first movable contact to be connected with the first fixed contact;
and if the charging and discharging controller identifies that the external equipment is a socket, controlling the first movable contact to be connected with the second fixed contact.
Optionally, the charging and discharging device further includes:
the second working mode switching circuit is connected with a second control signal output end of the charge and discharge controller and the conversion connector;
wherein the second operation mode switching circuit includes:
the second control end of the second control switch is connected with the second control signal output end, and the second movable contact is connected with the third connection confirmation end of the conversion connector;
one end of the third resistor is connected with the third stationary contact of the second control switch, and the other end of the third resistor is connected with the third connection confirmation end of the conversion connector;
one end of the fourth resistor is connected with the fourth stationary contact of the second control switch, and the other end of the fourth resistor is connected with the fourth connection confirmation end of the conversion connector;
when the charging and discharging controller identifies that the external device is a second charging and discharging gun, the charging and discharging controller controls the first movable contact to be connected with the first fixed contact and controls the second movable contact to be connected with the fourth fixed contact; or, the first movable contact is controlled to be connected with the second fixed contact, and the second movable contact is controlled to be connected with the third fixed contact.
Optionally, the charge and discharge controller includes a first control pilot terminal, a third control pilot terminal, and a third control signal output terminal;
the first control guide end is connected with the second control guide end of the first charging and discharging gun;
the third control guide end is connected with a fourth control guide end of the conversion connector;
the third control signal output end is connected with the control end of a third control switch connected between the first charging and discharging gun and the conversion connector;
and the charge and discharge controller controls the third control signal output end to output a control signal according to the voltage signal of the first control guide end and the voltage signal of the third control guide end, so that the third control switch is switched on or switched off.
The embodiment of the invention also provides a charge and discharge control method, which comprises the following steps:
controlling the working mode switching circuit to switch to a corresponding working mode according to the identified type of the external equipment connected with the conversion connector;
and after the working mode switching circuit is switched to a corresponding working mode, controlling a control switch connected between the charging and discharging gun and the conversion connector to be switched on or off according to a voltage signal of the control guide end.
Optionally, the step of controlling the operating mode switching circuit to switch to the corresponding operating mode according to the identified type of the external device connected to the conversion connector includes:
if the type of the external equipment is a conversion plug, controlling the working mode switching circuit to switch to a charging mode;
if the type of the external equipment is a charging and discharging gun, controlling the working mode switching circuit to switch to a vehicle-to-vehicle charging and discharging mode;
and if the type of the external equipment is a switching socket, controlling the working mode switching circuit connected with the charging and discharging gun to switch to a discharging mode of the vehicle-to-external electric equipment.
Optionally, the step of controlling the on/off of the control switch connected between the charging and discharging gun and the conversion connector according to the voltage signal of the control guidance terminal includes:
and determining whether the voltage signal of the control guide terminal is matched with a first preset pulse width modulation wave, if so, controlling a control switch connected between the charging and discharging gun and the conversion connector to be in a closed state, and if not, controlling a control switch connected between the charging and discharging gun and the conversion connector to be in an open state.
The technical scheme of the invention at least has the following beneficial effects:
according to the charging and discharging control device, the first working mode switching circuit is controlled to be switched to the corresponding working mode through the charging and discharging controller according to the type of the external equipment connected with the conversion connector, so that charging or discharging is carried out between the external equipment and the electric automobile, the V2L mode of the electric automobile discharging the electric equipment, the V2V mode of the electric automobile discharging the electric automobile and the charging mode of the charging pile charging the electric automobile are achieved through the charging and discharging control device, and the production cost of an automobile enterprise is reduced on the basis of meeting the user requirements.
Drawings
Fig. 1 is a schematic diagram of a charge and discharge device according to an embodiment of the present invention.
Description of reference numerals:
the device comprises a charging and discharging controller 1, a first working mode switching circuit 2, a first charging and discharging gun 3, a conversion connector 4, a second working mode switching circuit 5, a first control switch S1, a first resistor R1, a second resistor R2, a third resistor R3, a second control switch S2, a fourth resistor R4 and a third control switch S3.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a charging and discharging device and a charging and discharging control method aiming at the problem that production cost is increased due to the fact that equipment such as a charging pile, a charger and V2L are provided for a user during automobile sales in the prior art, so that a control circuit of the charging pile, a control circuit of the charger and a control circuit of V2L equipment are integrated into one device, and production cost of a vehicle enterprise is reduced on the basis of meeting user requirements.
Referring to fig. 1, a schematic diagram of a charging and discharging device according to an embodiment of the present invention is shown, the charging and discharging device includes:
a charge and discharge controller 1;
the first working mode switching circuit 2 is connected with a first control signal output end of the charge and discharge controller 1;
the first charging and discharging gun 3 is respectively connected with the charging and discharging controller 1, the first working mode switching circuit 2 and an external electric automobile;
the conversion connector 4 is respectively connected with the charge and discharge controller 1, the first charge and discharge gun 3 and external equipment;
the charging and discharging controller 1 controls the first working mode switching circuit 2 to switch to a corresponding working mode according to the identified type of the external device, so that charging or discharging is performed between the external device and the electric vehicle.
According to the charge and discharge control device provided by the embodiment of the invention, the connection with different external equipment is realized by arranging the conversion connector 4, so that the charge and discharge control device integrates the control functions of a charger, a charging pile and V2L, the sharing of a control circuit is realized, and the production cost of a vehicle is reduced on the basis of meeting the user requirements.
Optionally, the first charging and discharging gun 3 includes: a first connection confirmation terminal and a second connection confirmation terminal;
the first operating mode switching circuit 2 is connected to the first connection confirmation terminal and the second connection confirmation terminal, respectively.
In this embodiment, the first charge/discharge gun 3 is used for connecting to an electric vehicle, and preferably, when the first charge/discharge gun 3 is connected to an external electric vehicle, the first connection confirmation terminal is connected to a connection confirmation line of the external electric vehicle, and the second connection confirmation terminal is connected to a vehicle control device of the external electric vehicle. Specifically, the first connection confirmation terminal is connected to a first connection confirmation (CC1) terminal in a vehicle interface of the electric vehicle, and the electric vehicle determines a current connection state according to the detected voltage at the CC1 terminal.
Optionally, the first operating mode switching circuit 2 includes:
a first control switch S1, a first control end of which is connected to the first control signal output end, and a first movable contact of which is connected to a first connection confirmation end of the first charging and discharging gun 3;
a first resistor R1 having one end connected to the first stationary contact of the first control switch S1 and the other end connected to the second connection confirmation terminal of the first charge/discharge gun 3; preferably, the resistance value of the first resistor R1 is 220 Ω.
A second resistor R2, one end of which is connected to the second stationary contact of the first control switch S1 and the other end of which is connected to the second connection confirmation end of the first charge-discharge gun 3; preferably, the resistance of the second resistor R2 is 2k Ω.
The charging and discharging controller 1 controls the first movable contact to be connected with the first fixed contact or the second fixed contact according to the type of the external device.
In this embodiment, an identity recognition module is arranged in the charge and discharge controller 1, the identity recognition module is connected with a plug end of an external device through the connection converter, and the type of the external device is determined according to the resistance value of an identity recognition resistor in the plug end. Specifically, the charge and discharge controller 1 may be pre-stored with a comparison table of the resistance value and the type of the external device, and the type of the external device is obtained by looking up the table.
Optionally, if the charge and discharge controller 1 identifies that the external device is a conversion plug, the first movable contact is controlled to be connected with the first fixed contact;
and if the charging and discharging controller 1 identifies that the external equipment is a socket, controlling the first movable contact to be connected with the second fixed contact.
In this embodiment, when it is detected that the external device is a conversion plug, it is determined that the external device is a discharge device, that is: the external equipment is used for charging the electric automobile, and the charge-discharge control device plays a role of a charge pal. When the external device is detected to be a socket, determining that the external device is a charging device, namely: the electric automobile supplies power to the external equipment, and the charging and discharging device plays a role in a V2L mode. When detecting that the external equipment is a charging pile, determining that the external equipment is discharging equipment, namely: the external equipment charges the electric automobile.
Further, the charging and discharging device further includes:
the second working mode switching circuit 5 is connected with a second control signal output end of the charge and discharge controller 1 and the conversion connector 4;
wherein the second operation mode switching circuit 5 includes:
a second control switch S2, a second control end of which is connected to the second control signal output end, and a second movable contact of which is connected to a third connection confirmation end of the conversion connector 4;
a third resistor R3 having one end connected to the third stationary contact of the second control switch S2 and the other end connected to the third connection confirmation terminal of the conversion connector 4; preferably, the resistance value of the first resistor R1 is 220 Ω.
A fourth resistor R4, one end of which is connected to the fourth stationary contact of the second control switch S2 and the other end of which is connected to the fourth connection confirmation terminal of the conversion connector 4; preferably, the resistance of the second resistor R2 is 2k Ω.
When the external device is identified to be a second charging and discharging gun, the charging and discharging controller 1 controls the first movable contact to be connected with the first fixed contact and controls the second movable contact to be connected with the fourth fixed contact; or, the first movable contact is controlled to be connected with the second fixed contact, and the second movable contact is controlled to be connected with the third fixed contact.
In this embodiment, when it is detected that the external device is the second charging and discharging gun, if it is determined that the current mode is the V2V mode in which the vehicle-to-vehicle discharging mode is required, the first movable contact needs to be connected to the first fixed contact to form a charging end, and the second movable contact needs to be connected to the fourth fixed contact to form a discharging end; or, the first movable contact is connected with the second fixed contact to form a discharging end, and the second movable contact is connected with the third fixed contact to form a charging end.
Optionally, the charge and discharge controller 1 includes a first control pilot terminal, a third control pilot terminal, and a third control signal output terminal;
the first control guide end is connected with the second control guide end of the first charging and discharging gun 3;
the third control guide end is connected with a fourth control guide end of the conversion connector;
the third control signal output end is connected with the control end of a third control switch S3 connected between the first charging and discharging gun 3 and the conversion connector 4;
the charge and discharge controller 1 controls the third control signal output end to output a control signal according to the voltage signal of the first control pilot terminal and the voltage signal of the second control pilot terminal, so that the third control switch S3 is turned on or off.
Taking the V2L mode as an example:
firstly, a user rotates a discharge knob of the electric automobile to a discharge end, and 12V voltage is output to the second control guide end; secondly, when the charge and discharge controller 1 detects that the first control leading end has 12V voltage input, the first control signal output end outputs a first control signal to enable the first movable contact to be connected with the second fixed contact; thirdly, when the voltage of the second control guide terminal is detected to be divided into 9V, the external equipment is confirmed to be connected with the conversion connector 4; then, when the electric automobile detects that the voltage of the second control guide end is divided into 9V, the electric automobile outputs a pulse width modulation signal to the second control guide end; then, when the electric automobile detects that the voltage of the second control leading end is a PWM wave signal with an amplitude of 6V, the electric automobile closes a main relay inside the electric automobile, and when the charge and discharge controller 1 detects that the voltage of the first control leading end is a 6VPWM wave signal, the charge and discharge controller 1 closes the third switch S3, so that the electric automobile discharges to an external device; finally, after the user rotates the discharge knob of the electric automobile to reset, the voltage of the second control guide end jumps to be a non-6 VPWM wave, the electric automobile controls the disconnection of a main relay in the electric automobile, the charge and discharge controller 1 detects that the voltage of the first control guide end is not the 6VPWM wave, the third switch S3 is controlled to be disconnected, and the discharge is finished.
Taking the V2V mode as an example:
in the first case:
firstly, a user rotates a discharge knob of the electric automobile to a discharge end, and the electric automobile outputs 12V voltage to the second control guide end; secondly, when the charge and discharge controller 1 detects that the first control leading end has 12V voltage input, the first control signal output end outputs a first control signal to enable the first movable contact to be connected with the second fixed contact, and the second control signal output end outputs a second control signal to enable the second movable contact to be connected with the third fixed contact; thirdly, when the voltage of the second control guide terminal is detected to be divided into 9V, the external electric automobile is confirmed to be connected with the conversion connector 4; then, when the electric automobile detects that the voltage of the second control guide end is divided into 9V, the electric automobile outputs a pulse width modulation signal to the second control guide end; then, when the external electric automobile detects that the voltage of the fourth control guide end is 6VPWM waves, the internal connection confirmation switch of the external electric automobile is controlled to be closed; then, when the electric automobile detects that the voltage of the second control guide end is 6VPWM wave, the electric automobile closes a main relay inside the electric automobile, and when the charge and discharge controller 1 detects that the voltage of the first control guide end is 6VPWM wave signal, the charge and discharge controller 1 closes the third switch S3, so that the electric automobile discharges electricity to an external electric automobile; finally, after the user rotates the discharge knob of the electric automobile to reset, the voltage of the second control guide end jumps to be a non-6 VPWM wave, the electric automobile controls the disconnection of a main relay in the electric automobile, the charge and discharge controller 1 detects that the voltage of the first control guide end is not the 6VPWM wave, the third switch S3 is controlled to be disconnected, and the discharge is finished.
In the second case:
firstly, a user rotates a discharge knob of an external electric automobile to a discharge end, and the external electric automobile outputs 12V voltage to the fourth control guide end; secondly, when the charge and discharge controller 1 detects that 12V voltage is input at the third control leading end, the second control signal output end outputs a third control signal to enable the second movable contact to be connected with the third fixed contact, and the first control signal output end outputs a fourth control signal to enable the first movable contact to be connected with the first fixed contact; thirdly, when the charge and discharge controller 1 detects that the voltage of the fourth control guide end is divided into 9V, it is determined that the electric automobile is connected with the first charge and discharge gun 3; then, when the external electric vehicle detects that the voltage of the fourth control leading end is divided into 9V, the external electric vehicle outputs a pulse width modulation signal to the fourth control leading end; then, when the electric automobile detects that the voltage of the second control guide end is 6VPWM wave, the electric automobile controls the internal connection confirmation switch to be closed, and then when the external electric automobile detects that the voltage of the fourth control guide end is 6VPWM wave, the external electric automobile closes the main relay inside the external electric automobile, and when the charge and discharge controller 1 detects that the voltage of the third control guide end is 6VPWM wave signal, the charge and discharge controller 1 closes the third switch S3, so that the external electric automobile discharges to the electric automobile; finally, after the user rotates the discharge knob of the external electric automobile to reset, the voltage of the fourth control guide end jumps to be a non-6 VPWM wave, the external electric automobile controls the disconnection of the main relay in the external electric automobile, the charge and discharge controller 1 detects that the voltage of the third control guide end is not a 6VPWM wave, the third switch S3 is controlled to be disconnected, and the discharge is finished.
The embodiment of the invention also provides a charge and discharge control method, which comprises the following steps:
controlling the working mode switching circuit to switch to a corresponding working mode according to the identified type of the external equipment connected with the conversion connector; optionally, the type of the external device may be an electric device, a charging pile, or an electric vehicle.
And after the working mode switching circuit is switched to a corresponding working mode, controlling a control switch connected between the charging and discharging gun and the conversion connector to be switched on or off according to a voltage signal of the control guide end.
Optionally, the line connected between the charging and discharging gun and the conversion connector comprises a zero line, a live line and a ground line; after the external equipment and the electric automobile are determined to be ready according to the voltage signal of the control guide end, the electric automobile discharges the external equipment or the external equipment charges the electric automobile by controlling the on-off of the control switches on the zero line and the live line.
Optionally, the step of controlling the operating mode switching circuit to switch to the corresponding operating mode according to the identified type of the external device connected to the conversion connector includes:
if the type of the external equipment is a conversion plug, controlling the working mode switching circuit to switch to a charging mode;
if the type of the external equipment is a charging and discharging gun, controlling the working mode switching circuit to switch to a vehicle-to-vehicle charging and discharging mode;
and if the type of the external equipment is a switching socket, controlling the working mode switching circuit connected with the charging and discharging gun to switch to a discharging mode of the vehicle-to-external electric equipment.
Optionally, the step of controlling the on/off of the control switch connected between the charging and discharging gun and the conversion connector according to the voltage signal of the control guidance terminal includes:
and determining whether the voltage signal of the control guide terminal is matched with a first preset pulse width modulation wave, if so, controlling a control switch connected between the charging and discharging gun and the conversion connector to be in a closed state, and if not, controlling a control switch connected between the charging and discharging gun and the conversion connector to be in an open state.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A charging and discharging device, comprising:
a charge/discharge controller (1);
the first working mode switching circuit (2) is connected with a first control signal output end of the charge and discharge controller (1);
the first charging and discharging gun (3) is respectively connected with the charging and discharging controller (1), the first working mode switching circuit (2) and an external electric automobile;
the conversion connector (4) is respectively connected with the charge-discharge controller (1), the first charge-discharge gun (3) and external equipment;
the charging and discharging controller (1) controls the first working mode switching circuit (2) to switch to a corresponding working mode according to the identified type of the external equipment, so that charging or discharging is carried out between the external equipment and the electric automobile.
2. The charging and discharging device according to claim 1, characterized in that said first charging and discharging gun (3) comprises: a first connection confirmation terminal and a second connection confirmation terminal;
the first working mode switching circuit (2) is connected with the first connection confirmation end and the second connection confirmation end respectively.
3. The charging and discharging device according to claim 2, wherein when the first charging and discharging gun (3) is connected to an external electric vehicle, the first connection confirmation terminal is connected to a connection confirmation line of the external electric vehicle, and the second connection confirmation terminal is connected to a vehicle control device of the external electric vehicle.
4. The charging and discharging device according to claim 2, wherein the first operation mode switching circuit (2) comprises:
a first control switch (S1), a first control end of which is connected with the first control signal output end, and a first movable contact of which is connected with a first connection confirmation end of the first charging and discharging gun (3);
a first resistor (R1) having one end connected to the first stationary contact of the first control switch (S1) and the other end connected to the second connection confirmation end of the first charge/discharge gun (3);
a second resistor (R2) having one end connected to the second stationary contact of the first control switch (S1) and the other end connected to a second connection confirmation end of the first charge/discharge gun (3);
the charging and discharging controller (1) controls the first movable contact to be connected with the first fixed contact or the second fixed contact according to the type of the external equipment.
5. Charging and discharging device according to claim 4,
if the charging and discharging controller (1) identifies that the external equipment is a conversion plug, controlling the first movable contact to be connected with the first fixed contact;
and if the charging and discharging controller (1) identifies that the external equipment is a socket, controlling the first movable contact to be connected with the second fixed contact.
6. The charging and discharging device according to claim 4, further comprising:
the second working mode switching circuit (5) is connected with a second control signal output end of the charge and discharge controller (1) and the conversion connector (4);
wherein the second operation mode switching circuit (5) comprises:
a second control switch (S2), a second control end is connected with the second control signal output end, and a second movable contact is connected with a third connection confirmation end of the conversion connector (4);
a third resistor (R3) having one end connected to the third stationary contact of the second control switch (S2) and the other end connected to the third connection confirmation terminal of the conversion connector (4);
a fourth resistor (R4) having one end connected to the fourth stationary contact of the second control switch (S2) and the other end connected to the fourth connection confirmation terminal of the conversion connector (4);
when the external equipment is identified to be a second charging and discharging gun, the charging and discharging controller (1) controls the first movable contact to be connected with the first fixed contact and controls the second movable contact to be connected with the fourth fixed contact; or, the first movable contact is controlled to be connected with the second fixed contact, and the second movable contact is controlled to be connected with the third fixed contact.
7. The charging and discharging device according to claim 6, wherein the charging and discharging controller (1) comprises a first control pilot terminal, a third control pilot terminal and a third control signal output terminal;
the first control guide end is connected with the second control guide end of the first charging and discharging gun (3);
the third control guide end is connected with a fourth control guide end of the conversion connector;
the third control signal output end is connected with the control end of a third control switch (S3) connected between the first charging and discharging gun (3) and the conversion connector (4);
the charge and discharge controller (1) controls the third control signal output end to output a control signal according to the voltage signal of the first control guide end and the voltage signal of the third control guide end, so that the third control switch (S3) is turned on or off.
8. A charge and discharge control method is characterized by comprising the following steps:
controlling the working mode switching circuit to switch to a corresponding working mode according to the identified type of the external equipment connected with the conversion connector;
and after the working mode switching circuit is switched to a corresponding working mode, controlling a control switch connected between the charging and discharging gun and the conversion connector to be switched on or off according to a voltage signal of the control guide end.
9. The charge and discharge control method according to claim 8, wherein the step of controlling the operation mode switching circuit to switch to the corresponding operation mode according to the identified type of the external device connected to the conversion connector comprises:
if the type of the external equipment is a conversion plug, controlling the working mode switching circuit to switch to a charging mode;
if the type of the external equipment is a charging and discharging gun, controlling the working mode switching circuit to switch to a vehicle-to-vehicle charging and discharging mode;
and if the type of the external equipment is a switching socket, controlling the working mode switching circuit connected with the charging and discharging gun to switch to a discharging mode of the vehicle-to-external electric equipment.
10. The charge and discharge control method according to claim 8, wherein the step of controlling the on/off of the control switch connected between the charge and discharge gun and the transfer connector according to the voltage signal of the control pilot terminal comprises:
and determining whether the voltage signal of the control guide terminal is matched with a first preset pulse width modulation wave, if so, controlling a control switch connected between the charging and discharging gun and the conversion connector to be in a closed state, and if not, controlling a control switch connected between the charging and discharging gun and the conversion connector to be in an open state.
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