CN113859003A - Vehicle-mounted charger, method for controlling vehicle direct current charging, charging adapter and vehicle - Google Patents

Vehicle-mounted charger, method for controlling vehicle direct current charging, charging adapter and vehicle Download PDF

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Publication number
CN113859003A
CN113859003A CN202010617197.9A CN202010617197A CN113859003A CN 113859003 A CN113859003 A CN 113859003A CN 202010617197 A CN202010617197 A CN 202010617197A CN 113859003 A CN113859003 A CN 113859003A
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China
Prior art keywords
charging
vehicle
direct current
module
port
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CN202010617197.9A
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Chinese (zh)
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CN113859003B (en
Inventor
黄志祥
罗建兴
石雷
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BYD Co Ltd
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BYD Co Ltd
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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
    • 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

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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 discloses a vehicle-mounted charger, a method for controlling direct current charging of a vehicle, a charging adapter and the vehicle, wherein the vehicle-mounted charger comprises an AC/DC module, a DC/DC module and a control module; the control module is used for detecting direct current, controlling the AC/DC module to be conducted so as to transmit the direct current, and controlling the DC/DC module to convert the direct current into direct current required by a vehicle-mounted battery. The vehicle-mounted charger can realize the direct current charging function and improve the conversion efficiency.

Description

Vehicle-mounted charger, method for controlling vehicle direct current charging, charging adapter and vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle-mounted charger, a method for controlling direct-current charging of a vehicle, a charging adapter and the vehicle.
Background
With the vigorous development of new energy vehicles and new energy facility industries, subsidies gradually tend to charge operation facility enterprises, particularly, governments and social resources in various regions develop public charging vigorously, the increment of a direct-current charging station is obvious, and the convenience of direct-current charging is increasingly remarkable, but a lot of hybrid vehicles only use an alternating-current charging port and can only charge the vehicles in modes of an alternating-current jack or an alternating-current charging station, the alternating-current charging station is mostly a parking area without being watched by people, and the phenomena of oil vehicle occupation, alternating-current pile damage and the like occur frequently, so that the hybrid vehicles are more difficult to charge on the public charging station.
In order to solve the problem that the hybrid vehicle is charged on the direct current pile, even a manufacturer develops a charging control device for converting direct current into alternating current, namely, the direct current of the direct current charging pile is converted into the alternating current, and then the vehicle is supplied with power. However, the charging control device is a power device, the product is heavy and not easy to carry, the cost is high, and the conversion efficiency is low and the user experience is low from the power grid end to the battery end through triple losses of the charging pile, the charging control device and the vehicle-mounted charger in the view of the whole charging loop.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, one objective of the present invention is to provide a vehicle-mounted charger, which can implement a dc charging function and improve conversion efficiency.
The second objective of the present invention is to provide a method for controlling the dc charging of a vehicle.
The invention also aims to provide a vehicle.
The fourth objective of the present invention is to provide a charging adapter.
In order to solve the above problem, an embodiment of the first aspect of the present invention provides a vehicle-mounted charger, including an AC/DC module, a DC/DC module, and a control module; the control module is used for detecting direct current, controlling the AC/DC module to be conducted so as to transmit the direct current, and controlling the DC/DC module to convert the direct current into direct current required by a vehicle-mounted battery.
According to the vehicle-mounted charger disclosed by the embodiment of the invention, based on the matching of the vehicle-mounted alternating current socket and the charging adapter, when the direct current charging is carried out, the direct current is detected through the control module, the AC/DC module is further controlled to be conducted to transmit the direct current, and the direct current is converted into the direct current required by the vehicle-mounted battery through the DC/DC module to finish the direct current charging.
In some embodiments, the control module is further configured to detect a dc charging identification signal, determine that the charging adapter is connected, and feed back a vehicle-mounted charging permission signal to the charging adapter when it is determined that the vehicle meets the dc charging condition.
The embodiment of the second aspect of the invention provides a method for controlling direct current charging of a vehicle, which is used for a vehicle-mounted charger and comprises the steps of detecting direct current; controlling the AC/DC module of the vehicle-mounted charger to be conducted so as to transmit direct current; and controlling a DC/DC module of the vehicle-mounted charger to convert the direct current into direct current required by a vehicle-mounted battery so as to charge the vehicle-mounted battery.
According to the method for controlling the direct-current charging of the vehicle, based on the matching of the vehicle-mounted alternating-current socket and the charging adapter, when the direct-current charging is started, the direct current is detected through the control module, the AC/DC module is further controlled to be conducted to transmit the direct current, the direct current is converted into the direct current required by the vehicle-mounted battery through the DC/DC module, and the direct-current charging is completed.
In some embodiments, prior to detecting the direct current, the method further comprises: when the direct current charging identification signal is detected, determining the connection of a direct current charging adapter; after the direct current charging adapter is connected, whether the vehicle meets a direct current charging condition is determined; the vehicle meets the direct current charging condition, and feeds back a vehicle-mounted charging permission signal to the charging adapter.
In a third embodiment of the invention, a vehicle is provided, which includes a vehicle-mounted battery and a vehicle-mounted alternating current socket; in the vehicle-mounted charger according to the embodiment, the vehicle-mounted charger is connected with the vehicle-mounted alternating current socket and is used for charging the battery in a direct current manner.
According to the vehicle provided by the embodiment of the invention, when direct-current charging is carried out, the vehicle-mounted alternating-current socket is matched and connected with the charging adapter, a direct-current power supply signal enters the vehicle-mounted charger through the charging adapter and the vehicle-mounted alternating-current socket, the vehicle-mounted charger regulates and controls the input power supply of the charging pile to finish direct-current charging of the battery, the direct-current charging function of the vehicle is realized, power conversion is not required to be carried out through the charging adapter, and the conversion efficiency is improved.
A fourth aspect of the present invention provides a charging adapter, for connecting to the vehicle in the foregoing embodiment during dc charging, where the charging adapter includes a dc charging base including a first power input port for inputting positive dc power and a second power input port for inputting negative dc power; the alternating current charging head comprises a first power output port for outputting the positive direct current and a second power output port for outputting the negative direct current; a first switch unit, a first end of which is connected to the first power input port, and a second end of which is connected to the first power output port; a second switch unit, a first end of which is connected to the second power input port and a second end of which is connected to the second power output port; and the control board is respectively connected with the first switch unit and the second switch unit and used for responding to a vehicle-mounted charging permission signal and controlling the first switch unit and the second switch unit to be closed.
According to the charging adapter provided by the embodiment of the invention, when the direct current charging is carried out, based on the connection of the direct current charging seat and the direct current power supply and the connection of the alternating current charging head and the vehicle-mounted alternating current socket, the control panel controls the first switch unit and the second switch unit to be closed in response to the vehicle-mounted charging permission signal sent by the vehicle-mounted terminal, and the direct current input by the direct current source terminal can enter the vehicle-mounted terminal through the power input port and the power output port to complete the direct current charging process.
In some embodiments, the dc charging cradle further comprises: the first charging communication port and the second charging communication port are both connected with the control board and used for carrying out direct-current charging message interaction with the direct-current charging pile; the control panel is further used for sending a charging adjustment instruction to the direct current charging pile when the output direct current of the direct current charging pile is determined to exceed the vehicle-mounted charging allowable range according to the direct current charging message.
In some embodiments, the dc charging cradle further comprises: the first charging connection port and the second charging connection port are both connected with the control board and used for inputting direct current charging connection signals; the control panel is provided with a charging mode identification unit, and the charging mode identification unit generates a direct current charging identification signal based on the direct current charging connection signal.
In some embodiments, the ac charging head further comprises: the direct-current charging identification device comprises a first connection detection port and a second connection detection port, wherein the first connection detection port and the second connection detection port are both connected with the control board and used for outputting the direct-current charging identification signal to a vehicle-mounted charger.
In some embodiments, the dc charging cradle further comprises: the first standby port and the second standby port are connected with the control board.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of DC charging an electric vehicle according to one embodiment of the present invention;
fig. 2 is a block diagram of a vehicle-mounted charger according to an embodiment of the present invention;
FIGS. 3(a) - (c) are schematic diagrams illustrating the variation of DC voltage value after a vehicle inputs DC power according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method of controlling vehicle DC charging in accordance with one embodiment of the present invention;
fig. 5 is a schematic structural diagram of a charging adapter according to an embodiment of the present invention;
FIG. 6 is a block diagram of a vehicle according to an embodiment of the invention;
fig. 7 is a flowchart of charging a vehicle through a dc charging post according to an embodiment of the present invention.
Reference numerals:
a vehicle-mounted charger 10; an AC/DC module 1; a DC/DC module 2; a control module 3;
a charging adapter 20; a DC charging stand 4; an AC charging head 5; a control panel 6;
a vehicle 30; a vehicle-mounted AC outlet 7; and a vehicle-mounted battery 8.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In the embodiment, the dc charging process of the electric vehicle is described with reference to fig. 1, as shown in fig. 1, when dc charging is performed, the dc charging socket of the charging adapter is connected to the dc plug of the dc charging device, and the ac charging head of the charging adapter is connected to the on-board ac socket of the electric vehicle. On the whole charging loop, the direct current output by the direct current charging equipment enters the electric vehicle through the charging adapter and is subjected to relevant processing by a vehicle-mounted charger inside the vehicle, so that the function of charging the battery pack by the direct current power supply is realized. Compared with the existing charging control equipment, the charging adapter provided by the embodiment of the invention does not have the function of converting direct current into alternating current, and only needs to communicate with a direct current charging pile and a vehicle.
The following describes, with reference to the accompanying drawings, a vehicle-mounted charger according to an embodiment of the present invention, which can implement a dc charging function and improve conversion efficiency.
Fig. 2 is a structural block diagram of a vehicle-mounted charger according to an embodiment of the first aspect of the present invention, and as shown in fig. 2, a vehicle-mounted charger 10 according to an embodiment of the present invention includes an AC/DC module 1, a DC/DC module 2, and a control module 3.
In the embodiment, the control module 3 is configured to control the AC/DC module 1 to rectify and output the direct current when detecting the alternating current, and control the DC/DC module 2 to convert the direct current into the direct current required by the vehicle-mounted battery. That is, the AC/DC module 1 can control the AC input DC output, so that when there is AC input, it performs a rectifying function to control the output DC; the DC/DC module 2 has a function of DC conversion, and can convert a fixed DC voltage into a variable DC voltage.
Specifically, when the alternating current power supply is used for supplying power to a vehicle, the alternating current charging gun is connected with a vehicle-mounted alternating current socket at a vehicle-mounted end, alternating current is output from the alternating current end and enters the vehicle-mounted charger 10 through the vehicle-mounted alternating current socket, then the control module detects the alternating current, the AC/DC module 1 is controlled to rectify the input alternating current to output direct current to the DC/DC module 2, and the DC/DC module 2 converts the direct current into direct current required by a vehicle-mounted battery according to the requirement of the battery management system, so that the function of alternating current charging of the vehicle is realized.
In the embodiment, as the interface of the DC charging pile is a DC charging gun, which is incompatible with a vehicle-mounted AC socket at a vehicle-mounted end and cannot be directly connected, the vehicle-mounted charging machine 10 according to the embodiment of the present invention needs to complete docking via a charging adaptor to charge a vehicle, and therefore, the control module 3 is further configured to control the AC/DC module 1 to be turned on to transmit DC power and control the DC/DC module 2 to convert the DC power into DC power required by a vehicle-mounted battery when detecting the DC power. That is, the AC/DC module 1 can control the AC input and the DC output, so that when there is DC input, only the conduction function is performed, and the DC is not changed.
Specifically, when the vehicle is powered by the direct-current power supply, the direct-current charging gun is connected with a vehicle-mounted alternating-current socket of the vehicle-mounted end through the charging adapter. The direct current power end outputs direct current, the direct current enters the vehicle-mounted charger 10 through the charging adapter and the vehicle-mounted alternating current socket respectively, the control module 3 controls the AC/DC module 1 to conduct the input direct current after detecting the direct current, the direct current is transmitted to the DC/DC module 2, the DC/DC module 2 converts the direct current into the direct current required by the vehicle-mounted battery according to the requirement of the battery management system, and therefore the direct current charging function of the vehicle is achieved. In the vehicle-mounted charger 10 according to the embodiment of the present invention, the direct current output by the direct current power supply can directly enter the vehicle-mounted charger 10 through the charging adapter, and the AC/DC module 1 does not need to perform conversion from alternating current to direct current, and only needs to perform adjustment and conversion on the input direct current through the DC/DC module 2, so as to complete direct current charging, reduce power loss, and improve conversion efficiency.
For example, as shown in fig. 3, a schematic diagram of a change in a dc voltage value after a vehicle inputs dc power is shown, where V1 is a voltage input by the dc charging pile, and V2 is a dc voltage rectified by a vehicle-mounted charger. Fig. 3(a) shows a DC voltage value V1 between the AC receptacle and the AC/DC module 1, fig. 3(b) shows a DC voltage value V1 between the AC/DC module 1 and the DC/DC module 2, and fig. 3(c) shows a DC voltage V1 converted by the DC/DC module 2 into a DC voltage V2 required by the vehicle battery. As can be seen from the figure, in the embodiment of the present invention, based on the charging adapter, the direct current of the direct current charging pile is connected to the vehicle-mounted charger 10, and the direct current V1 input by the charging pile is converted into the direct current signal V2 required by the battery through voltage boosting conversion in the vehicle-mounted charger 10, that is, from the power grid end to the battery end, power conversion is not required, so that power loss is reduced.
Therefore, through the matching of the charging adapter and the vehicle-mounted alternating current socket, after the vehicle-mounted charger 10 of the embodiment of the invention enters the direct current charging, the AC/DC module 1 plays a conducting role, and the DC/DC module 2 adjusts and converts the input direct current to complete the direct current charging, namely, when the direct current charging is carried out, the vehicle only needs to change the charging strategy of the vehicle-mounted charger 10 without changing the hardware circuit of the vehicle to realize the direct current charging function, the phenomenon that the vehicle only has an alternating current charging port in the prior art is solved, the use requirement of the vehicle on the direct current charging pile is met with the minimum engineering quantity, and the overall working mode can be seen, the regulation and control of the input power supply from a power grid to the battery through the direct current charging pile and the vehicle-mounted charger are realized by the vehicle-mounted charger, the middle conversion module is saved, and the power loss is reduced, the conversion efficiency is improved.
According to the vehicle-mounted charger 10 provided by the embodiment of the invention, based on the matching of the vehicle-mounted alternating current socket and the charging adapter, when the direct current charging is started, the direct current is detected through the control module 3, the AC/DC module 1 is further controlled to be conducted to transmit the direct current, and the direct current is converted into the direct current required by the vehicle-mounted battery through the DC/DC module 2 to finish the direct current charging.
In some embodiments, the control module 3 according to the embodiments of the present invention is further configured to detect a dc charging identification signal, determine that the charging adapter is connected, and feed back a vehicle-mounted charging permission signal to the charging adapter when it is determined that the vehicle meets the dc charging condition. That is, when the vehicle is charged, the control module 3 determines the charging mode according to the detected charging identification signal, so as to control the vehicle-mounted charger 10 to start the corresponding charging process. For example, when dc charging is performed, after the charging adapter is connected to the vehicle-mounted ac socket, the charging adapter end may send a dc charging identification signal to the vehicle-mounted battery charger 10, and then the control module 3 may determine that the charging adapter is connected when detecting the dc charging identification signal, and feed back a vehicle-mounted charging permission signal to the charging adapter when determining that the vehicle satisfies the dc charging condition, such as when the battery management system monitors that the battery is insufficient.
In a second embodiment of the present invention, a method for controlling a vehicle to be charged with dc power is provided, and as shown in fig. 4, the method in the embodiment of the present invention at least includes steps S1-S3.
In step S1, direct current is detected.
In the embodiment, the method of the embodiment of the invention is used for the vehicle-mounted charger provided by the embodiment, because the interface of the direct current charging pile is the direct current charging gun, the direct current charging gun is not matched with the vehicle-mounted alternating current socket of the vehicle-mounted end in size and cannot be directly connected, and in order to solve the problem that the vehicle is charged on the direct current charging pile, the embodiment of the invention uses the charging pile connector to complete the butt joint between the direct current charging gun and the vehicle-mounted alternating current socket so as to charge the vehicle. When the direct current charging is carried out, the direct current output by the direct current charging pile enters the vehicle-mounted charger through the charging adapter, and then the control module can detect the direct current.
And step S2, controlling the conduction of an AC/DC module of the vehicle-mounted charger to transmit direct current.
In an embodiment, the AC/DC module can control the AC input and the DC output, so that when there is DC input, the AC/DC module can conduct without changing the DC. Specifically, after the vehicle-mounted charger enters a direct current charging flow, direct current enters an AC/DC module for conduction after passing through a charging adapter and a vehicle-mounted alternating current socket so as to transmit the direct current.
And step S3, controlling a DC/DC module of the vehicle-mounted charger to convert the direct current into direct current required by the vehicle-mounted battery so as to charge the vehicle-mounted battery.
In an embodiment, the DC/DC module has a DC conversion function, and can convert a fixed DC voltage into a variable DC voltage, so that the DC power is transmitted to the DC/DC module after being conducted by the AC/DC module, and the DC/DC module adjusts and converts the input DC power according to the requirement of the battery management system, so that the DC power is converted into the DC power required by the vehicle-mounted battery, so as to charge the vehicle-mounted battery, thereby completing the DC charging process.
According to the method for controlling the direct-current charging of the vehicle, based on the matching of the vehicle-mounted alternating-current socket and the charging adapter, when the direct-current charging is started, the direct current is detected through the control module, the AC/DC module is further controlled to be conducted to transmit the direct current, the direct current is converted into the direct current required by the vehicle-mounted battery through the DC/DC module, and the direct-current charging is completed.
In an embodiment, before detecting the direct current, the method of the embodiment of the present invention further includes, when detecting the direct current charging identification signal, determining that the direct current charging adapter is connected, and further determining whether the vehicle satisfies a direct current charging condition; and if the vehicle meets the direct-current charging condition, feeding back a vehicle-mounted charging permission signal to the charging adapter. Specifically, because the interface of the direct current charging pile is a direct current charging gun which is incompatible with a vehicle-mounted alternating current socket at a vehicle-mounted end and cannot be directly connected, in order to solve the problem that a vehicle is charged on the direct current charging pile, the embodiment of the invention uses a charging pile connector to complete the butt joint between the direct current charging gun and the vehicle-mounted alternating current socket so as to charge the vehicle, thereby identifying whether the charging adapter is connected with the vehicle-mounted alternating current socket or not through a control module in the vehicle-mounted charging pile, when the control module detects a direct current charging identification signal, determining that the charging adapter is connected, further judging whether the vehicle meets a direct current charging condition or not, for example, identifying whether the charging mode is a direct current charging mode or not, thereby feeding back a vehicle-mounted charging permission signal to the charging adapter when the vehicle meets the direct current charging condition, and executing step S1.
As the interface of the dc charging pile is a dc charging gun, which is incompatible with the vehicle-mounted ac socket at the vehicle-mounted end and cannot be directly connected, so that the charging adapter is required to complete docking to charge the vehicle, an embodiment of the present invention provides a charging adapter, which is used for being connected with the vehicle-mounted ac socket of the vehicle during dc charging, as shown in fig. 5, the charging adapter 20 in an embodiment of the present invention includes a dc charging stand 4, an ac charging head 5, a control board 6, a first switch unit K1, and a second switch unit K2.
The direct-current charging seat 4 comprises a first power input port DC + for inputting positive direct current and a second power input port DC-for inputting negative direct current; the ac charging head 5 includes a first power output port L1 for outputting positive dc power and a second power output port N for outputting negative dc power; a first terminal of the first switching unit K1 is connected to the first power input port DC +, and a second terminal of the first switching unit K1 is connected to the first power output port L1; a first terminal of the second switch unit K2 is DC-connected to the second power input port, and a second terminal of the second switch unit K2 is connected to the second power output port N; the control board 6 is connected with the first switch unit K1 and the second switch unit K2, respectively, for controlling both the first switch unit K1 and the second switch unit K2 to be closed in response to the vehicle-mounted charging enable signal.
In an embodiment, as shown in fig. 5, the dc charging dock 4 further includes a first ground port PE1 for connecting the ground terminal of the dc power source, and the ac charging header 5 further includes a second ground port PE2 for connecting the ground terminal of the vehicle ac outlet, and the second ground port PE2 is connected to the first ground port PE 1.
In the embodiment, the charging adapter 20 of the embodiment of the present invention completes the docking between the dc charging gun and the vehicle ac socket, that is, the dc charging base 4 is connected to the dc charging gun and the ac charging head 5 is connected to the vehicle ac socket. When the direct-current charging pile is used for charging a vehicle, the vehicle-mounted charger at the vehicle-mounted end can recognize that the charging adapter 20 is connected and send a vehicle-mounted charging permission signal to the charging adapter 20, in response to the vehicle-mounted charging permission signal, the control panel 6 in the charging adapter 20 controls the first switch unit K1 and the second switch unit K2 to be closed so as to form a charging loop, and then direct current output by the direct-current charging pile end is input through the first power input port DC + and the second power input port DC-respectively and is output through the first power output port L1 and the second power output port N, enters the vehicle-mounted charger and charges the direct current into the vehicle-mounted battery through internal processing of the vehicle-mounted charger, so that the direct-current charging of the vehicle is completed.
Therefore, according to the charging pile connector 20 of the embodiment of the invention, power conversion is not needed, only communication with the charging pile is needed, the failure rate is reduced, the cost is low, compared with the existing charging control equipment, the charging pile connector 20 of the embodiment of the invention integrates the control board 6 on the charging adapter 20, a conversion module is not needed, the size is reduced, the carrying is light and simple, the operation is convenient, and the charging pile connector 20 of the embodiment of the invention saves the conversion module, thereby reducing the power loss and improving the conversion efficiency.
According to the charging adapter 20 of the embodiment of the invention, when the direct current charging is performed, based on the connection between the direct current charging seat 4 and the direct current power supply and the connection between the alternating current charging head 5 and the vehicle-mounted alternating current socket, in response to the vehicle-mounted charging permission signal sent by the vehicle-mounted terminal, the control board 6 controls the first switch unit K1 and the second switch unit K2 to be both closed, so that the direct current input by the direct current source terminal can enter the vehicle-mounted terminal through the power input port and the power output port, and the direct current charging process is completed.
In an embodiment, as shown in fig. 5, the dc charging cradle 4 further comprises a first charging communication port S + and a second charging communication port S-. The first charging communication port S + and the second charging communication port S-are both connected with the control board 6 and used for carrying out direct-current charging message interaction with the direct-current charging pile, and the control board 6 is further used for sending a charging adjusting instruction to the direct-current charging pile when determining that the output direct current of the direct-current charging pile exceeds the vehicle-mounted charging allowable range according to the direct-current charging message. That is, the charging adapter 20 according to the embodiment of the present invention not only needs to interface with its interface, but also needs to communicate with the dc charging device through the charging adapter 20, so as to control the voltage and power of the dc charging within the allowable range of vehicle charging, that is, within the safe range of the input voltage and power of the vehicle power supply, for example, the dc output voltage is controlled to 220 (+/-15%) V, and the power is controlled to the power of the vehicle power supply, so as to ensure the input safety of the vehicle charger.
In an embodiment, as shown in fig. 5, the dc cradle 4 further comprises a first charging connection port CC2 and a second charging connection port CC 1. The first charging connection port CC2 and the second charging connection port CC1 are both connected to the control board 6, and are configured to input a dc charging connection signal, and the control board 6 is provided with a charging mode identification unit, and the charging mode identification unit generates a dc charging identification signal based on the dc charging connection signal. That is, the charging adapter 20 of the embodiment of the present invention follows a standard ac charging mode, and generates a dc charging identification signal through the charging mode identification unit, for example, a specific identification resistance or PWM wave characteristic value mode is used to inform the vehicle-mounted charger that the charging is dc charging, and adjust the charging control strategy of the vehicle-mounted charger.
In an embodiment, as shown in fig. 5, the ac charging head 5 further includes a first connection detection port CC and a second connection detection port CP. The first connection detection port CC and the second connection detection port CP are both connected with the control board 6 and used for outputting a direct current charging identification signal to the vehicle-mounted charger. That is, after the dc charging stand 4 is connected with the dc charging pile, the control panel 6 can identify the dc charging connection signal through the first charging connection port CC2 and the second charging connection port CC1, and generate the dc charging identification signal, and then transmit to the vehicle-mounted charger through the first connection detection port CC and the second connection detection port CP, so that the vehicle-mounted charger knows that the charging mode is dc charging.
In an embodiment, as shown in fig. 5, the dc cradle 4 further comprises a first backup port a + and a second backup port a-. The first standby port a + and the second standby port a-are both connected to the control board 6, so as to facilitate the subsequent function expansion of the charging adapter 20.
In a fourth aspect of the present invention, a vehicle 30 according to an embodiment of the present invention includes, as shown in fig. 6, a battery 8, an on-vehicle ac outlet 7, and the on-vehicle charger 10 according to the above-described embodiment.
The vehicle-mounted alternating current socket 7 is used for being matched and connected with the charging adapter provided by the embodiment; the vehicle-mounted charger 10 is connected with the vehicle-mounted alternating current socket 7 and is used for charging the battery 8 in a direct current mode. Specifically, when the vehicle 30 is charged by the direct-current charging pile, the direct-current charging pile is connected with the charging adapter provided by the embodiment in a matched manner through the vehicle-mounted alternating-current socket 7, the direct current of the direct-current charging pile is connected to the vehicle-mounted charger 10, and the direct current input by the charging pile is converted into the direct current required by the battery 8 through voltage boosting conversion in the vehicle-mounted charger 10, so that the direct-current charging function is realized.
According to the vehicle 30 disclosed by the embodiment of the invention, when direct-current charging is carried out, the vehicle-mounted alternating-current socket 8 is matched and connected with the charging adapter, direct current enters the vehicle-mounted charger 10 through the charging adapter and the vehicle-mounted alternating-current socket 8, the vehicle-mounted charger 10 regulates and controls the input power of the charging pile to finish direct-current charging of the battery 7, the direct-current charging function of the vehicle is realized, power conversion is not required to be carried out through the charging adapter, and the conversion efficiency is improved.
The following describes an example of the dc charging process of the vehicle with reference to fig. 7, and the detailed process is as follows.
For a dc charging stub:
step S4, insert the charging adapter, that is, butt the charging adapter and the dc gun, and execute step S5.
And step S5, the direct current charging pile provides an auxiliary power supply for the control board of the charging adapter through the auxiliary power supply terminal connection loop so as to awaken the control board, and step S6 is executed.
And step S6, performing direct current charging message interaction, namely, communicating the direct current charging pile with a control board inside the charging adapter so as to control the charging signal of the direct current charging pile within a vehicle-mounted charging allowable range, and executing step S7.
In step S7, dc power is output.
For the charging adapter terminals:
step S8, insert the dc gun and insert the on-vehicle ac outlet, execute step S9.
And step S9, providing an auxiliary power supply based on the direct current charging pile to wake up the control board, detecting a direct current charging connection signal by the control board, sending a direct current charging identification signal to a vehicle-mounted charger end, and executing step S10.
And step S10, receiving the direct current charging identification signal based on the vehicle-mounted charger, feeding back a charging adjustment signal to the control panel, and performing direct current charging message interaction between the control panel and the direct current charging pile end so as to control the charging signal of the direct current charging pile within a vehicle-mounted charging allowable range, and executing step S11.
And step S11, judging whether the vehicle-mounted power supply allows direct-current charging, namely, the vehicle-mounted charger end recognizes that the charging adapter is inserted, feeding back the vehicle-mounted charging allowing signal to the control board after determining that the charging signal of the direct-current charging pile is controlled within the vehicle-mounted charging allowing range, and executing the step S12 by the control board according to the received vehicle-mounted charging allowing signal.
And step S12, closing the relays K1 and K2 and outputting direct current.
For the on-board charger side:
in step S13, the charging adapter is inserted, and step S14 is executed.
And S14, the vehicle-mounted charger is awakened, the charging adapter is recognized to be inserted, and the step S15 is executed.
And step S15, the vehicle-mounted charger starts a direct current charging process according to the direct current charging identification signal sent by the charging adapter end, namely the vehicle-mounted charger sends a charging adjustment signal to the control board, and feeds back a vehicle-mounted charging permission signal to the charging adapter after the charging signal of the direct current charging pile is determined to be controlled within a vehicle-mounted charging permission range, and step S16 is executed.
And step S16, inputting the direct current into the vehicle-mounted charger through the direct current charging pile and the charging adapter, and enabling the vehicle to enter a direct current charging state.
Therefore, according to the process of performing direct current charging on the vehicle, based on the charging adapter provided by the embodiment of the invention, on the whole charging loop, the control of the input power of the charging pile is realized by the vehicle-mounted charger from the power grid to the battery through the direct current charging pile and the vehicle-mounted charger, so that the middle conversion module is saved, the overall conversion efficiency is improved, and the use requirement of the vehicle on the direct current charging pile is met.
In the description of this specification, any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of custom logic functions or processes, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a vehicle-mounted charger which characterized in that includes:
the device comprises an AC/DC module, a DC/DC module and a control module;
the control module is used for detecting direct current, controlling the AC/DC module to be conducted so as to transmit the direct current, and controlling the DC/DC module to convert the direct current into direct current required by a vehicle-mounted battery.
2. The vehicle-mounted charger according to claim 1, wherein said control module is further configured to detect a dc charging identification signal, determine that the charging adapter is connected, and feed back a vehicle-mounted charging permission signal to the charging adapter when it is determined that the vehicle satisfies the dc charging condition.
3. A method for controlling direct current charging of a vehicle is used for a vehicle-mounted charger, and is characterized by comprising the following steps:
detecting the direct current;
controlling the AC/DC module of the vehicle-mounted charger to be conducted so as to transmit direct current;
and controlling a DC/DC module of the vehicle-mounted charger to convert the direct current into direct current required by a vehicle-mounted battery so as to charge the vehicle-mounted battery.
4. The method of controlling vehicle dc charging according to claim 3, wherein before the dc power is detected, the method further comprises:
when the direct current charging identification signal is detected, determining the connection of a direct current charging adapter;
after the direct current charging adapter is connected, whether the vehicle meets a direct current charging condition is determined;
the vehicle meets the direct current charging condition, and feeds back a vehicle-mounted charging permission signal to the charging adapter.
5. A vehicle, characterized by comprising:
a vehicle-mounted battery and a vehicle-mounted AC outlet;
the vehicle-mounted charger according to claim 1 or 2, which is connected to the vehicle-mounted ac socket and is configured to charge the battery with dc power.
6. A charging adapter for use in connection with the vehicle of claim 5 during dc charging, said charging adapter comprising:
the direct current charging seat comprises a first power supply input port for inputting positive direct current and a second power supply input port for inputting negative direct current;
the alternating current charging head comprises a first power output port for outputting the positive direct current and a second power output port for outputting the negative direct current;
a first switch unit, a first end of which is connected to the first power input port, and a second end of which is connected to the first power output port;
a second switch unit, a first end of which is connected to the second power input port and a second end of which is connected to the second power output port;
and the control board is respectively connected with the first switch unit and the second switch unit and used for responding to a vehicle-mounted charging permission signal and controlling the first switch unit and the second switch unit to be closed.
7. The charging head of claim 6, wherein the dc charging stand further comprises:
the first charging communication port and the second charging communication port are both connected with the control board and used for carrying out direct-current charging message interaction with the direct-current charging pile;
the control panel is further used for sending a charging adjustment instruction to the direct current charging pile when the output direct current of the direct current charging pile is determined to exceed the vehicle-mounted charging allowable range according to the direct current charging message.
8. The charging adapter as claimed in claim 7, wherein the dc charging base further comprises:
the first charging connection port and the second charging connection port are both connected with the control board and used for inputting direct current charging connection signals;
the control panel is provided with a charging mode identification unit, and the charging mode identification unit generates a direct current charging identification signal based on the direct current charging connection signal.
9. The charging adapter of claim 8, wherein the ac charging head further comprises:
the direct-current charging identification device comprises a first connection detection port and a second connection detection port, wherein the first connection detection port and the second connection detection port are both connected with the control board and used for outputting the direct-current charging identification signal to a vehicle-mounted charger.
10. The charging adapter as claimed in claim 9, wherein the dc charging base further comprises:
the first standby port and the second standby port are connected with the control board.
CN202010617197.9A 2020-06-30 2020-06-30 Vehicle-mounted charger, method for controlling direct-current charging of vehicle, charging adapter and vehicle Active CN113859003B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115320422A (en) * 2022-08-30 2022-11-11 重庆长安新能源汽车科技有限公司 Charging adapter, charging control system, direct current charging control method and vehicle
CN115320422B (en) * 2022-08-30 2024-07-09 深蓝汽车科技有限公司 Charging adapter, charging control system, direct-current charging control method and vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107264332A (en) * 2017-07-25 2017-10-20 上海蔚来汽车有限公司 Crossover sub for Vehicular charging, for the charging system to Vehicular charging
CN108349405A (en) * 2017-03-31 2018-07-31 深圳欣锐科技股份有限公司 A kind of on-board charging system and Vehicular charger
CN108819786A (en) * 2018-08-02 2018-11-16 郑州轻工业学院 A kind of electric car conduction charging system alternating current-direct current charge control guidance circuit and its control method
CN109941135A (en) * 2019-03-29 2019-06-28 恒大智慧充电科技有限公司 Charging interface conversion device, charge control method and computer storage medium
CN111224447A (en) * 2020-02-27 2020-06-02 深圳威迈斯新能源股份有限公司 On-vehicle machine that charges of compatible alternating-current charging stake and direct-current charging stake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108349405A (en) * 2017-03-31 2018-07-31 深圳欣锐科技股份有限公司 A kind of on-board charging system and Vehicular charger
CN107264332A (en) * 2017-07-25 2017-10-20 上海蔚来汽车有限公司 Crossover sub for Vehicular charging, for the charging system to Vehicular charging
CN108819786A (en) * 2018-08-02 2018-11-16 郑州轻工业学院 A kind of electric car conduction charging system alternating current-direct current charge control guidance circuit and its control method
CN109941135A (en) * 2019-03-29 2019-06-28 恒大智慧充电科技有限公司 Charging interface conversion device, charge control method and computer storage medium
CN111224447A (en) * 2020-02-27 2020-06-02 深圳威迈斯新能源股份有限公司 On-vehicle machine that charges of compatible alternating-current charging stake and direct-current charging stake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115320422A (en) * 2022-08-30 2022-11-11 重庆长安新能源汽车科技有限公司 Charging adapter, charging control system, direct current charging control method and vehicle
CN115320422B (en) * 2022-08-30 2024-07-09 深蓝汽车科技有限公司 Charging adapter, charging control system, direct-current charging control method and vehicle

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