CN110235336B - Integrated vehicle-mounted charger circuit, manufacturing method thereof and integrated vehicle-mounted charger - Google Patents
Integrated vehicle-mounted charger circuit, manufacturing method thereof and integrated vehicle-mounted charger Download PDFInfo
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- CN110235336B CN110235336B CN201880006903.7A CN201880006903A CN110235336B CN 110235336 B CN110235336 B CN 110235336B CN 201880006903 A CN201880006903 A CN 201880006903A CN 110235336 B CN110235336 B CN 110235336B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 162
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- 238000004804 winding Methods 0.000 claims description 193
- 239000003990 capacitor Substances 0.000 claims description 69
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
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- 238000004891 communication Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
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- H02J7/022—
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
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- H02J2007/10—
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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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
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses integrated on-vehicle charger circuit and manufacturing method, integrated on-vehicle machine that charges are used for control as the controller switch K1 switch K2 switch K3's connected state is in order to carry out energy transmission, energy transmission includes the commercial power arrives power battery reaches low voltage battery's energy transmission power battery arrives low voltage battery's energy transmission and the commercial power arrives low voltage battery's energy transmission is favorable to the better energy of realizing the commercial power to transmit power battery and low voltage battery through different processing circuit to and power battery's energy transmits low voltage battery and repays power battery through different processing circuit.
Description
Technical Field
The application relates to the technical field of electric automobile charging, in particular to an integrated vehicle-mounted charger circuit, a manufacturing method and an integrated vehicle-mounted charger.
Background
In recent years, new energy sources have been gradually introduced in the fields of automobile manufacturing and application in order to protect the environment and reduce the use of non-renewable resources. Electric vehicles are the main force of new energy vehicles, and are divided into pure electric vehicles, hybrid electric vehicles and fuel cell vehicles. As new energy vehicles become an important development direction of the vehicle industry in the future, vehicle-mounted electronic devices (such as DC/DC converters and integrated vehicle-mounted chargers) tend to be miniaturized, integrated and high-power-intensive. At present, the integrated vehicle-mounted charger circuit has a function of charging a power battery pack or a storage battery through commercial power, but the function is single, and the diversified use requirements of the integrated vehicle-mounted charger in future scenes are difficult to meet.
Disclosure of Invention
The embodiment of the application provides an integrated vehicle-mounted charger circuit, a manufacturing method and an integrated vehicle-mounted charger, and the integrated vehicle-mounted charger can realize that the energy of commercial power is transmitted to a power battery and a low-voltage battery through different processing circuits, and the energy of the power battery is transmitted to the low-voltage battery and fed back to the power battery through different processing circuits.
In a first aspect of the embodiments of the present application, an integrated vehicle-mounted charger circuit is provided, which includes a primary side processing circuit, a transformer, a first secondary side processing circuit, a second secondary side processing circuit, a power battery, a low-voltage battery, and a switch K 1 Switch K 2 And a switch K 3 And a controller, wherein:
the transformer comprises a primary winding, an iron core, a first secondary winding and a second secondary winding, wherein the primary winding, the first secondary winding and the second secondary winding are arranged on the iron core;
the second secondary side processing circuit comprises a full-wave rectification circuit and a boosting circuit;
the switch K 1 Is connected to the second end of the primary side processing circuit, the first end of the primary side processing circuit is connected to the mains supply, the switch K 1 The second interface of the first secondary processing circuit is connected with the primary winding, the first secondary winding is connected with the first end of the first secondary processing circuit, and the second end of the first secondary processing circuit is connected with the switch K 2 The first interface of (2), the switch K 2 The second interface of the full-wave rectifier is connected with the power battery, the second secondary winding is connected with the first end of the full-wave rectifier circuit, and the second end of the full-wave rectifier circuit is connected with the switch K 3 The first interface of (1), the switch K 3 The second interface of the voltage booster circuit is connected with the first end of the voltage booster circuit, and the second end of the voltage booster circuit is connected with the low-voltage battery;
the controller controls the switch K 1 The switch K 2 The switch K 3 The power battery and the low-voltage battery are connected in series, and the power transmission comprises the energy transmission from the mains supply to the power battery and the low-voltage battery, the energy transmission from the power battery to the low-voltage battery and the energy transmission from the mains supply to the low-voltage battery;
the total leakage inductance between the first secondary winding and the second secondary winding is in inverse proportion to the total width of the primary winding, the first secondary winding and the second secondary winding.
In one possible example, the controller controls the switch K 1 The switch K 2 The switch K 3 For energy transfer, comprising: the controller controls the switch K 1 First and second interfaces, the switch K 2 And the switch K 3 When the first interface and the second interface are communicated, the primary side processing circuit, the transformer and the first secondary side processing circuit form a first processing circuit, and the first processing circuit is used for transmitting the first part of energy of the commercial power to the power battery; the primary side processing circuit, the transformer and the second secondary side processing circuit form a second processing circuit, and the second processing circuit is used for transmitting a second part of energy of the commercial power to the low-voltage battery; the controller controls the switch K 2 First and second interfaces, the switch K 3 When the first interface and the second interface are communicated, the first secondary processing circuit, the transformer and the second secondary processing circuit form a third processing circuitA third processing circuit for transferring energy from the power battery to the low voltage battery; the controller controls the switch K 1 First and second interfaces, the switch K 3 When the first interface and the second interface are communicated, the primary side processing circuit, the transformer and the second secondary side processing circuit form a fourth processing circuit, and the fourth processing circuit is used for transmitting the energy of the commercial power to the low-voltage battery.
In one possible example, the relation between the total leakage inductance of the first secondary winding and the second secondary winding and the total width w of the primary winding, the first secondary winding and the second secondary winding is as follows:
wherein L is a total leakage inductance of the primary winding, the first secondary winding and the second secondary winding, and N is p The number of turns of the primary winding is, the MLT is the average turn length of a single turn, b is the difference between the inner diameter and the outer diameter of the primary winding and a winding i, the winding i is the first secondary winding or the second secondary winding, and w is the total width of the primary winding, the first secondary winding and the second secondary winding.
In one possible example, the distance between the first secondary winding and the second secondary winding ranges from 5mm to 50mm.
In one possible example, the coil structures of the primary winding and the first secondary winding are sandwich winding structures.
In one possible example, the first secondary side processing circuit comprises a transistor Q 1 Transistor Q 2 Transistor Q 3 And a transistor Q 4 Diode D 1 Diode D 2 Diode D 3 Diode D 4 And a first capacitor C 1 Wherein: the transistor Q 1 Is connected to the transistor Q 3 The drain of said transistor Q 3 Source electrode connection ofThe transistor Q 4 The drain of the transistor Q 4 Is connected to the transistor Q 2 The source of (a), the transistor Q 2 Is connected to the transistor Q 1 A source electrode of (a); the diode D 1 Is connected to the transistor Q 1 The diode D 1 Is connected to the transistor Q 1 Source of, the diode D 3 Is connected to the transistor Q 3 The drain electrode of the diode D 3 Is connected to the transistor Q 3 The diode D 4 Is connected to the transistor Q 4 The drain electrode of the diode D 4 Is connected to the transistor Q 4 The diode D 2 Is connected to the transistor Q 2 The drain electrode of the diode D 2 Is connected to the transistor Q 2 A source electrode of (a); the first capacitor C 1 Are respectively connected with the transistors Q 3 The drain electrode of the diode D 3 The negative pole of (1), the first capacitor C 1 Are respectively connected with the transistors Q 4 And said diode D 4 The positive electrode of (1).
In one possible example, the first secondary side processing circuit comprises a transistor Q 5 Transistor Q 6 Transistor Q 7 Transistor Q 8 Diode D 5 Diode D 6 Diode D 7 Diode D 8 A second capacitor C 2 And a third capacitance C 3 Wherein: the transistor Q 5 Is connected to the transistor Q 7 The drain of the transistor Q 7 Is connected to the transistor Q 8 The drain of the transistor Q 8 Is connected to the transistor Q 6 The source of (a), the transistor Q 6 Is connected to the transistor Q 5 A source electrode of (a); the diode D 5 Is connected to the transistor Q 5 The drain electrode of the diode D 5 Is connected to the transistor Q 5 The diode D 7 Is connected to the negative electrodeThe transistor Q 7 The drain electrode of the diode D 7 Is connected to the transistor Q 7 Source of, the diode D 8 Is connected to the transistor Q 8 The drain electrode of the diode D 8 Is connected to the transistor Q 8 Source of, the diode D 6 Is connected to the transistor Q 6 The drain electrode of the diode D 6 Is connected to the transistor Q 6 A source electrode of (a); the first ends of the first secondary windings are respectively connected with the transistors Q 5 Source electrode of, the diode D 5 Anode of (2), the transistor Q 6 And said diode D 6 A second end of the first secondary winding is connected with the second capacitor C 2 The first terminal of, the second capacitor C 2 Are respectively connected with the transistor Q 7 Source electrode of, the diode D 7 Anode of (2), the transistor Q 8 And said diode D 8 The negative electrode of (1), the third capacitor C 3 Are respectively connected with the transistors Q 5 The drain electrode of the diode D 5 Negative electrode of (1), the transistor Q 7 And said diode D 7 The negative pole of (2), the third capacitor C 3 Respectively connected to the transistors Q 6 Source electrode of, the diode D 6 Anode of (2), the transistor Q 8 And said diode D 8 The positive electrode of (1).
In one possible example, the second secondary side processing circuit comprises a diode D 9 Diode D 10 Diode D 11 A fourth capacitor C 4 A fifth capacitor C 5 And a first inductance L 1 Wherein: the first end of the second secondary winding is connected with the diode D 9 The anode of (2), the diode D 9 Negative pole of the first capacitor is connected with the fourth capacitor C 4 The fourth capacitor C 4 Is connected to the diode D 9 The diode D 10 The second end of the second secondary winding is connected with the diode D 10 The anode of (2), the diode D 10 Is connected to the diode D 9 And the fourth capacitor C 4 On the connection line of the diode D 11 Is connected with the fifth capacitor C 5 The negative electrode of the diode D 11 Is connected with the first inductor L 1 The first inductance L 1 Negative pole of the capacitor is connected with the fifth capacitor C 5 The positive electrode of (1).
In one possible example, the primary processing circuit includes a transistor Q 9 Transistor Q 10 Transistor Q 11 Transistor Q 12 Diode D 12 Diode D 13 Diode D 14 Diode D 15 And a sixth capacitor C 6 A seventh capacitor C 7 And a second inductance L 2 Wherein: the transistor Q 9 Is connected to the transistor Q 11 The drain of said transistor Q 11 Is connected to the transistor Q 12 The drain of said transistor Q 12 Is connected to the transistor Q 10 The source of the transistor Q 10 Is connected to the transistor Q 9 A source electrode of (a); the diode D 12 Is connected to the transistor Q 9 The drain electrode of the diode D 12 Is connected to the transistor Q 9 Source of, the diode D 14 Is connected to the transistor Q 11 The diode D 14 Is connected to the transistor Q 11 The diode D 15 Is connected to the transistor Q 12 The drain electrode of the diode D 15 Is connected to the transistor Q 12 Source of, the diode D 13 Is connected to the transistor Q 10 The drain electrode of the diode D 13 Is connected to the transistor Q 10 A source electrode of (a); the second inductor L 2 Are respectively connected with the transistors Q 9 Source electrode of, the diode D 12 Anode of (2), the transistor Q 10 And said diode D 13 A negative electrode of (1), the firstTwo inductors L 2 Is connected to the first end of the primary winding, and the second end of the primary winding is connected to the sixth capacitor C 6 The first terminal of (C), the sixth capacitor C 6 Are respectively connected with the transistors Q 11 Source electrode of, the diode D 14 Anode of (2), the transistor Q 12 And said diode D 15 The negative electrode of (1), the seventh capacitor C 7 Is connected to the transistor Q 9 The drain electrode of (2), the seventh capacitor C 7 Is connected to the transistor Q 10 The source stage of (1).
In one possible example, the switch K 1 And a switch K 2 And switch K 3 Comprises at least one of the following: the device comprises a relay, a metal half-field effect transistor (MOSFET), a Silicon Controlled Rectifier (SCR) and an Insulated Gate Bipolar Transistor (IGBT).
A second aspect of the embodiments of the present application provides an integrated vehicle-mounted charger, including the first aspect of the integrated vehicle-mounted charger circuit.
A third aspect of the embodiments of the present application provides a method for manufacturing an integrated vehicle-mounted charger circuit, which is applied to a charger circuit including a primary side processing circuit, a transformer, a first secondary side processing circuit, a second secondary side processing circuit, a power battery, a low-voltage battery, and a switch K 1 Switch K 2 Switch K 3 And a controller, wherein:
the transformer comprises a primary winding, an iron core, a first secondary winding and a second secondary winding, wherein the primary winding, the first secondary winding and the second secondary winding are arranged on the iron core;
the second secondary side processing circuit comprises a full-wave rectifying circuit and a boosting circuit;
will the switch K 1 Is connected to the second end of the primary side processing circuit, the first end of the primary side processing circuit is connected to the mains supply, and the switch K is connected to the primary side processing circuit 1 Is connected to the primary winding, connects the first secondary winding to the first end of the first secondary processing circuit, and connects the second end of the first secondary processing circuit to the switch K 2 To (1) aAn interface connecting the switch K 2 The second interface of the full-wave rectification circuit is connected with the power battery, the second secondary winding is connected with the first end of the full-wave rectification circuit, and the second end of the full-wave rectification circuit is connected with the switch K 3 The first interface of (2) the switch K 3 The second interface of the voltage booster circuit is connected with the first end of the voltage booster circuit, and the second end of the voltage booster circuit is connected with the low-voltage battery;
the controller is used for controlling the switch K 1 The switch K 2 The switch K 3 The energy transmission comprises the energy transmission from the commercial power to the power battery and the low-voltage battery, the energy transmission from the power battery to the low-voltage battery and the energy transmission from the commercial power to the low-voltage battery;
wherein a total leakage inductance between the first secondary winding and the second secondary winding is in an inverse proportional relationship with a total width of the primary winding, the first secondary winding, and the second secondary winding.
The embodiment of the application has the following beneficial effects:
in the present application, the controller controls the switch K 1 The switch K 2 The switch K 3 The power battery and the low-voltage battery are connected through the power supply, the power battery is connected with the low-voltage battery through the power supply, and the low-voltage battery is connected with the power battery through the low-voltage battery.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings referred to in the embodiments or the background art of the present application will be briefly described below.
FIG. 1 is a prior art on-board OBC + DC/DC physical integration;
fig. 2 is a schematic structural diagram of an integrated vehicle-mounted charger provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of the transformer winding configuration shown in FIG. 2;
FIG. 4 is a schematic diagram of a first secondary side processing circuit shown in FIG. 2;
FIG. 5 is another schematic diagram of the first secondary processing circuit shown in FIG. 2;
FIG. 6 is a schematic diagram of a second secondary side processing circuit shown in FIG. 2;
FIG. 7 is a schematic diagram of a configuration of the primary side processing circuit shown in FIG. 2;
fig. 8 is a schematic diagram of an integrated vehicle charger circuit according to an embodiment of the present application;
fig. 9 is a schematic flowchart of a manufacturing method of an integrated vehicle-mounted charger circuit according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following are detailed below.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different elements and not for describing a particular sequential order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the conventional design, in a commonly-used vehicle-mounted OBC solution, the OBC is generally independent of a DC/DC converter, as shown in fig. 1, a mains supply enters an OBC main transformer through an OBC output side circuit, and then energy is transmitted to a power battery through an OBC output circuit, a power battery pack transmits the energy to a DC/DC circuit, and the DC/DC circuit transmits the energy to a low-voltage battery and a load.
In order to solve the above problem, an embodiment of the present application provides an integrated vehicle-mounted charger, which includes a primary side processing circuit, a transformer, a first secondary side processing circuit, a second secondary side processing circuit, a power battery, a low-voltage battery, and a switch K 1 And a switch K 2 And a switch K 3 The transformer comprises a primary winding, an iron core, a first secondary winding and a second secondary winding, wherein the primary winding, the first secondary winding and the second secondary winding are arranged on the iron core; the second secondary side processing circuit comprises a full-wave rectification circuit and a boosting circuit; the switch K 1 Is connected to the second end of the primary side processing circuit, the first end of the primary side processing circuit is connected to the mains supply, the switch K 1 The second interface of the first secondary processing circuit is connected with the primary winding, the first secondary winding is connected with the first end of the first secondary processing circuit, and the second end of the first secondary processing circuit is connected with the primary windingThe switch K 2 The first interface of (1), the switch K 2 The second interface of the full-wave rectifier is connected with the power battery, the second secondary winding is connected with the first end of the full-wave rectifier circuit, and the second end of the full-wave rectifier circuit is connected with the switch K 3 The first interface of (2), the switch K 3 The second interface of the voltage booster circuit is connected with the first end of the voltage booster circuit, and the second end of the voltage booster circuit is connected with the low-voltage battery; the controller controls the switch K 1 The switch K 2 The switch K 3 The power battery and the low-voltage battery are connected in series, and the power transmission comprises the energy transmission from the mains supply to the power battery and the low-voltage battery, the energy transmission from the power battery to the low-voltage battery and the energy transmission from the mains supply to the low-voltage battery; the total leakage inductance between the first secondary winding and the second secondary winding is in inverse proportion to the total width of the primary winding, the first secondary winding and the second secondary winding.
Embodiments of the present application will be described with reference to the accompanying drawings.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an integrated vehicle-mounted charger 100 according to an embodiment of the present disclosure, where the integrated vehicle-mounted charger 100 includes a primary side processing circuit 200, a transformer 300, a first secondary side processing circuit 400, a boost circuit 500, and a switch K 1 Switch K 2 And a switch K 3 A controller 600 and a full-wave rectification circuit 700;
the transformer 300 includes a primary winding, an iron core, a first secondary winding, and a second secondary winding, where the primary winding, the first secondary winding, and the second secondary winding are disposed on the iron core;
the second secondary side processing circuit includes a full-wave rectifying circuit 700 and a boosting circuit 500;
the switch K 1 Is connected to the second end of the primary side processing circuit 200, the first end of the primary side processing circuit 200 is connected to the mains, the switch K 1 Is connected to the primary winding of the transformer 300, and the first secondary winding of the transformer 300 is connected to the first secondary processing powerA first terminal of the first secondary side processing circuit 400, a second terminal of the first secondary side processing circuit 400 is connected with the switch K 2 The first interface of (2), the switch K 2 The second interface of the transformer 300 is connected to the power battery, the second secondary winding of the transformer 300 is connected to the first end of the full-wave rectification circuit 700, and the second end of the full-wave rectification circuit 700 is connected to the switch K 3 The first interface of (1), the switch K 3 The second interface of the voltage boosting circuit 500 is connected with the first end of the voltage boosting circuit 500, and the second end of the voltage boosting circuit 500 is connected with the low-voltage battery;
the controller 600 controls the switch K 1 The switch K 2 The switch K 3 The power battery and the low-voltage battery are connected in series, and the power transmission comprises the energy transmission from the mains supply to the power battery and the low-voltage battery, the energy transmission from the power battery to the low-voltage battery and the energy transmission from the mains supply to the low-voltage battery;
the total leakage inductance between the first secondary winding and the second secondary winding is in inverse proportion to the total width of the primary winding, the first secondary winding and the second secondary winding.
Wherein, the switch K 1 The switch K 2 And the switch K 3 And may be a control type switch, a bidirectional switch, and a unidirectional switch, which are not limited herein.
In one possible example, the controller 600 controls the switch K 1 The switch K 2 The switch K 3 For energy transfer, comprising:
the controller 600 controls the switch K 1 First interface and second interface, the switch K 2 And the switch K 3 When the first interface and the second interface of the power battery are connected, the primary side processing circuit 200, the transformer 300 and the first secondary side processing circuit 400 form a first processing circuit, and the first processing circuit is used for transmitting a first part of energy of the commercial power to the power battery; the primary side processing circuit 200, the transformer 300 and the second pairThe edge processing circuit forms a second processing circuit which is used for transmitting a second part of energy of the commercial power to the low-voltage battery;
the controller 600 controls the switch K 2 First and second interfaces, the switch K 3 When the first interface and the second interface are communicated, the first secondary processing circuit 400, the transformer 300 and the second secondary processing circuit form a third processing circuit, and the third processing circuit is used for transmitting the energy of the power battery to the low-voltage battery;
the controller 600 controls the switch K 1 First interface and second interface, the switch K 3 When the first interface and the second interface are communicated, the primary side processing circuit 200, the transformer 300 and the second secondary side processing circuit form a fourth processing circuit, and the fourth processing circuit is used for transmitting the energy of the commercial power to the low-voltage battery.
Optionally, the controller 600 controls the switch K 1 First and second interfaces, the switch K 2 When the first interface and the second interface are connected, the primary processing circuit 200, the transformer 300, and the first secondary processing circuit 400 form a fifth processing circuit, and the fifth processing circuit is configured to transmit a part of energy of the commercial power to the power battery.
In one possible example, the relation between the total leakage inductance of the first secondary winding and the second secondary winding and the total width w of the primary winding, the first secondary winding and the second secondary winding is as follows:
wherein L is a total leakage inductance of the primary winding, the first secondary winding and the second secondary winding, and N is p The number of turns of the primary winding, MLT is the average turn length of a single turn, b is the difference between the inner and outer diameters of the primary winding and a winding i, and the winding i is the first secondary winding or the second secondary windingAnd w is the total width of the primary winding, the first secondary winding and the second secondary winding.
Therefore, in the example, the coupling between the primary winding and the first secondary winding is good, and the filtering inductance is as small as possible, so that the primary winding and the first secondary winding adopt a sandwich winding structure; the filtering inductance between the first secondary winding and the second secondary winding is required to be as large as possible, and an LLC resonant circuit is formed by the filtering inductance and the transformer, so that the purpose of adjusting the output voltage of the second secondary processing circuit is achieved.
In one possible example, the length of the total leakage inductance between the first secondary winding and the second secondary winding ranges from 5mm to 50mm.
In one possible example, as shown in fig. 3, the coil structures of the primary winding 800 and the first secondary winding 900 are sandwich winding structures.
In one possible example, as shown in fig. 4, fig. 4 is a schematic diagram of a first sub-side processing circuit 400 shown in fig. 2, wherein the first sub-side processing circuit 400 includes a transistor Q 1 Transistor Q 2 Transistor Q 3 And a transistor Q 4 Diode D 1 Diode D 2 Diode D 3 Diode D 4 And a first capacitor C 1 Wherein: the transistor Q 1 Is connected to the transistor Q 3 The drain of said transistor Q 3 Is connected to the transistor Q 4 The drain of said transistor Q 4 Is connected to the transistor Q 2 The source of the transistor Q 2 Is connected to the transistor Q 1 A source electrode of (a); the diode D 1 Is connected to the transistor Q 1 The drain electrode of the diode D 1 Is connected to the transistor Q 1 Source of, the diode D 3 Is connected to the transistor Q 3 The drain electrode of the diode D 3 Is connected to the transistor Q 3 The diode D 4 Is connected to the transistor Q 4 The drain electrode of the diode D 4 Is connected to the transistor Q 4 Source of, the diode D 2 Is connected to the transistor Q 2 The drain electrode of the diode D 2 Is connected to the transistor Q 2 A source electrode of (a); the first capacitor C 1 Are respectively connected with the transistors Q 3 Source electrode of, the diode D 3 The positive electrode of (1), the first capacitor C 1 Are respectively connected with the transistors Q 4 And said diode D 4 The negative electrode of (1).
Wherein, the transistor and the diode constitute a switch tube.
Wherein, the diode D 1 Diode D 2 Diode D 3 And a diode D 4 Are all rectifier diodes.
In one possible example, as shown in fig. 5, fig. 5 is another structural schematic diagram of the first secondary processing circuit 400 shown in fig. 2, the first secondary processing circuit 400 including a transistor Q 5 Transistor Q 6 Transistor Q 7 Transistor Q 8 Diode D 5 Diode D 6 Diode D 7 Diode D 8 A second capacitor C 2 And a third capacitance C 3 Wherein: the transistor Q 5 Is connected to the transistor Q 7 The drain of said transistor Q 7 Is connected to the transistor Q 8 The drain of the transistor Q 8 Is connected to the transistor Q 6 The source of the transistor Q 6 Is connected to the transistor Q 5 A source electrode of (a); the diode D 5 Is connected to the transistor Q 5 The drain electrode of the diode D 5 Is connected to the transistor Q 5 Source of, the diode D 7 Is connected to the transistor Q 7 The diode D 7 Is connected to the transistor Q 7 The diode D 8 Is connected to the transistor Q 8 The drain electrode of the diode D 8 Is connected to the transistor Q 8 Source electrode ofSaid diode D 6 Is connected to the transistor Q 6 The drain electrode of the diode D 6 Is connected to the transistor Q 6 A source electrode of (a); the first ends of the first secondary windings 900 are respectively connected with the transistors Q 5 Source electrode of, the diode D 5 Anode of (2), the transistor Q 6 And the diode D 6 A second end of the first secondary winding 900 is connected to the second capacitor C 2 The first terminal of (C), the second capacitor C 2 Are respectively connected with the transistor Q 7 Source electrode of, the diode D 7 Anode of (2), the transistor Q 8 And the diode D 8 The negative pole of (2), the third capacitor C 3 Respectively connected to the transistors Q 5 The drain electrode of the diode D 5 Negative electrode of (1), the transistor Q 7 And said diode D 7 The negative electrode of (1), the third capacitor C 3 Are respectively connected with the transistors Q 6 Source electrode of, the diode D 6 Anode of (2), the transistor Q 8 And said diode D 8 The positive electrode of (1).
Wherein, the diode D 5 Diode D 6 Diode D 7 And a diode D 8 Are all rectifier diodes.
In one possible example, as shown in FIG. 6, FIG. 6 is a schematic diagram of a second secondary side processing circuit shown in FIG. 2, the second secondary side processing circuit including a diode D 9 Diode D 10 Diode D 11 A fourth capacitor C 4 A fifth capacitor C 5 And a first inductance L 1 Wherein: the first end of the second secondary winding is connected with the diode D 9 The anode of (2), the diode D 9 Negative pole of the first capacitor is connected with the fourth capacitor C 4 The fourth capacitor C 4 Is connected to the diode D 9 The diode D 10 The second end of the second secondary winding is connected with the diode D 10 A positive electrode ofThe diode D 10 Is connected to the diode D 9 And the fourth capacitor C 4 On the connection line of the diode D 11 Is connected with the fifth capacitor C 5 Of the diode D, the diode D 11 Is connected with the first inductor L 1 The first inductance L 1 Negative pole of the capacitor is connected with the fifth capacitor C 5 The positive electrode of (1).
Wherein, the diode D 9 Diode D 10 And a diode D 11 Are all rectifier diodes.
In one possible example, as shown in fig. 7, fig. 7 is a schematic diagram of a configuration of the primary side processing circuit 200 shown in fig. 2, the primary side processing circuit 200 including a transistor Q 9 Transistor Q 10 Transistor Q 11 Transistor Q 12 Diode D 12 Diode D 13 Diode D 14 Diode D 15 And a sixth capacitor C 6 And a seventh capacitor C 7 And a second inductance L 2 Wherein: the transistor Q 9 Is connected to the transistor Q 11 The drain of the transistor Q 11 Is connected to the transistor Q 12 The drain of said transistor Q 12 Is connected to the transistor Q 10 The source of the transistor Q 10 Is connected to the transistor Q 9 A source electrode of (a); the diode D 12 Is connected to the transistor Q 9 The diode D 12 Is connected to the transistor Q 9 Source of, the diode D 14 Is connected to the transistor Q 11 The diode D 14 Is connected to the transistor Q 11 Source of, the diode D 15 Is connected to the transistor Q 12 The diode D 15 Is connected to the transistor Q 12 The diode D 13 Is connected to the transistor Q 10 The diode D 13 Is connected to the transistor Q 10 A source electrode of (a); the second inductorL 2 Are respectively connected with the transistors Q 9 Source electrode of, the diode D 12 Anode of (2), the transistor Q 10 And said diode D 13 The negative pole of (1), the second inductance L 2 Is connected to a first end of the primary winding 800, and a second end of the primary winding 800 is connected to the sixth capacitor C 6 The first terminal of (1), the sixth capacitor C 6 Are respectively connected with the transistors Q 11 Source electrode of, the diode D 14 Anode of (2), the transistor Q 12 And said diode D 15 The negative electrode of (1), the seventh capacitor C 7 Is connected to the transistor Q 9 The drain electrode of (2), the seventh capacitor C 7 Is connected to the transistor Q 10 The source stage of (2).
Wherein, the diode D 12 Diode D 13 Diode D 14 And a diode D 15 Are all rectifier diodes.
In one possible example, the switch K 1 Switch K 2 And switch K 3 Comprises at least one of the following: the relay, the metal half-field effect transistor MOSFET, the silicon controlled rectifier SCR and the insulated gate bipolar transistor IGBT.
In this example, it can be seen that, since the leakage inductance can be controlled by controlling the length of the distance L between the first secondary winding and the second secondary winding, and the coupling effect can be further controlled, the energy of the utility power can be transmitted to the power battery and the low-voltage battery, and the energy of the power battery can be transmitted to the low-voltage battery through the primary side processing circuit, the transformer and the second secondary side processing circuit.
Referring to fig. 8, fig. 8 is a schematic diagram of an integrated vehicle-mounted charger circuit according to an embodiment of the disclosure, and as shown in fig. 8, a diode D 16 Diode D 17 Diode D 18 Diode D 19 And the rectification circuit is connected with a commercial power circuit and a primary side circuit.
Wherein, the diode D 16 Diode D 17 Diode D 18 And a diode D 19 Are all rectifier diodes.
The embodiment of the application provides an integrated vehicle-mounted charger, which comprises the integrated vehicle-mounted charger circuit.
Referring to fig. 9, fig. 9 is a schematic flowchart of a method for manufacturing an integrated vehicle-mounted charger circuit according to an embodiment of the present disclosure, and the method is applied to a charger circuit including a primary side processing circuit, a transformer, a first secondary side processing circuit, a second secondary side processing circuit, a power battery, a low-voltage battery, and a switch K 1 Switch K 2 And a switch K 3 And a controller, wherein: the transformer comprises a primary winding, an iron core, a first secondary winding and a second secondary winding, wherein the primary winding, the first secondary winding and the second secondary winding are arranged on the iron core; the second secondary side processing circuit comprises a full-wave rectifying circuit and a boosting circuit; the manufacturing method of the integrated vehicle-mounted charger circuit comprises the following steps:
And 902, connecting a first end of the primary side processing circuit to a mains supply.
And 907, connecting the second secondary winding to the first end of the full-wave rectification circuit.
And step 910, connecting the second end of the booster circuit to the low-voltage battery.
Wherein a total leakage inductance between the first secondary winding and the second secondary winding is in an inverse proportional relationship with a total width of the primary winding, the first secondary winding, and the second secondary winding. Y is
It should be noted that for the sake of simplicity, the foregoing embodiments are described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application with specific examples, and the above description of the embodiments is only provided to help understand the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application range may be changed, and in view of the above, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. The integrated vehicle-mounted charger circuit is characterized by comprising a primary side processing circuit, a transformer, a first secondary side processing circuit, a second secondary side processing circuit, a power battery, a low-voltage battery and a switch K 1 And a switch K 2 And a switch K 3 And a controller, wherein:
the transformer comprises a primary winding, an iron core, a first secondary winding and a second secondary winding, wherein the primary winding, the first secondary winding and the second secondary winding are arranged on the iron core;
the second secondary side processing circuit comprises a full-wave rectifying circuit and a boosting circuit;
the switch K 1 Is connected to the second end of the primary side processing circuit, the first end of the primary side processing circuit is connected to the mains supply, the switch K 1 Second interface of (2) is connected with the primary windingThe first secondary winding is connected with the first end of the first secondary processing circuit, and the second end of the first secondary processing circuit is connected with the switch K 2 The first interface of (1), the switch K 2 The second interface of the full-wave rectifier is connected with the power battery, the second secondary winding is connected with the first end of the full-wave rectifier circuit, and the second end of the full-wave rectifier circuit is connected with the switch K 3 The first interface of (1), the switch K 3 The second interface of the voltage boosting circuit is connected with the first end of the voltage boosting circuit, and the second end of the voltage boosting circuit is connected with the low-voltage battery;
the controller controls the switch K 1 The switch K 2 The switch K 3 The controller controls the switch K to perform energy transmission, the energy transmission comprises the energy transmission from the commercial power to the power battery and the low-voltage battery, the energy transmission from the power battery to the low-voltage battery and the energy transmission from the commercial power to the low-voltage battery, and the controller controls the switch K to perform energy transmission 1 First interface and second interface, the switch K 2 And the switch K 3 When the first interface and the second interface are communicated, the primary side processing circuit, the transformer and the first secondary side processing circuit form a first processing circuit, and the first processing circuit is used for transmitting the first part of energy of the commercial power to the power battery; the primary side processing circuit, the transformer and the second secondary side processing circuit form a second processing circuit, and the second processing circuit is used for transmitting a second part of energy of the mains supply to the low-voltage battery;
the controller controls the switch K 2 First and second interfaces, the switch K 3 When the first interface and the second interface are communicated, the first secondary processing circuit, the transformer and the second secondary processing circuit form a third processing circuit, and the third processing circuit is used for transmitting the energy of the power battery to the low-voltage battery;
the controller controls the switch K 1 First and second interfaces, the switch K 3 A first interface andwhen the second interface is communicated, the primary side processing circuit, the transformer and the second secondary side processing circuit form a fourth processing circuit, and the fourth processing circuit is used for transmitting the energy of the commercial power to the low-voltage battery;
the controller controls the switch K 1 First interface and second interface, the switch K 2 When the first interface and the second interface are communicated, a fifth processing circuit is formed by the primary side processing circuit, the transformer and the first secondary side processing circuit, and the fifth processing circuit is used for transmitting part of energy of the commercial power to the power battery;
the primary winding and the coil structure of the first secondary winding are of a sandwich winding structure, and the total leakage inductance between the first secondary winding and the second secondary winding is in inverse proportion to the total width of the primary winding, the first secondary winding and the second secondary winding.
2. The integrated vehicle charger circuit of claim 1 wherein a total leakage inductance of the first secondary winding and the second secondary winding is related to a total width w of the primary winding, the first secondary winding, and the second secondary winding by:
wherein L is a total leakage inductance of the primary winding, the first secondary winding and the second secondary winding, and N is p The number of turns of the primary winding is, the MLT is the average turn length of a single turn, b is the difference between the inner diameter and the outer diameter of the primary winding and a winding i, the winding i is the first secondary winding or the second secondary winding, and w is the total width of the primary winding, the first secondary winding and the second secondary winding.
3. The integrated vehicle charger circuit of claim 1 wherein the distance between the first secondary winding and the second secondary winding ranges from 5mm to 50mm.
4. The integrated vehicle charger circuit of claim 1 wherein the first secondary processing circuit comprises a transistor Q 1 Transistor Q 2 Transistor Q 3 And a transistor Q 4 Diode D 1 Diode D 2 Diode D 3 Diode D 4 And a first capacitor C 1 Wherein:
the transistor Q 1 Is connected to the transistor Q 3 The drain of said transistor Q 3 Is connected to the transistor Q 4 The drain of the transistor Q 4 Is connected to the transistor Q 2 The source of the transistor Q 2 Is connected to the transistor Q 1 A source electrode of (a);
the diode D 1 Is connected to the transistor Q 1 The diode D 1 Is connected to the transistor Q 1 The diode D 3 Is connected to the transistor Q 3 The diode D 3 Is connected to the transistor Q 3 The diode D 4 Is connected to the transistor Q 4 The drain electrode of the diode D 4 Is connected to the transistor Q 4 The diode D 2 Is connected to the transistor Q 2 The diode D 2 Is connected to the transistor Q 2 A source electrode of (a);
the first capacitor C 1 Are respectively connected with the transistors Q 3 The drain electrode of the diode D 3 The negative pole of (1), the first capacitor C 1 Are respectively connected with the transistor Q 4 And said diode D 4 The positive electrode of (1).
5. The integrated vehicle charger circuit of claim 1, wherein the first secondary side processThe circuit comprises a transistor Q 5 Transistor Q 6 Transistor Q 7 Transistor Q 8 Diode D 5 Diode D 6 Diode D 7 Diode D 8 A second capacitor C 2 And a third capacitance C 3 Wherein:
the transistor Q 5 Is connected to the transistor Q 7 The drain of the transistor Q 7 Is connected to the transistor Q 8 The drain of said transistor Q 8 Is connected to the transistor Q 6 The source of the transistor Q 6 Is connected to the transistor Q 5 A source electrode of (a);
the diode D 5 Is connected to the transistor Q 5 The diode D 5 Is connected to the transistor Q 5 The diode D 7 Is connected to the transistor Q 7 The diode D 7 Is connected to the transistor Q 7 Source of, the diode D 8 Is connected to the transistor Q 8 The drain electrode of the diode D 8 Is connected to the transistor Q 8 Source of, the diode D 6 Is connected to the transistor Q 6 The diode D 6 Is connected to the transistor Q 6 A source electrode of (a);
the first ends of the first secondary windings are respectively connected with the transistors Q 5 Source electrode of, the diode D 5 Anode of (2), the transistor Q 6 And said diode D 6 A second end of the first secondary winding is connected with the second capacitor C 2 The first terminal of, the second capacitor C 2 Are respectively connected with the transistor Q 7 Source electrode of, the diode D 7 Anode of (2), the transistor Q 8 And said diode D 8 The negative pole of (2), the third capacitor C 3 Are respectively connected with the transistors Q 5 The drain electrode of the diode D 5 Negative electrode of (1), the transistor Q 7 And the diode D 7 The negative electrode of (1), the third capacitor C 3 Are respectively connected with the transistors Q 6 Source electrode of, the diode D 6 Anode of (2), the transistor Q 8 And the diode D 8 The positive electrode of (1).
6. The integrated vehicle charger circuit of claim 4 or 5 wherein said second secondary processing circuit comprises a diode D 9 Diode D 10 Diode D 11 A fourth capacitor C 4 A fifth capacitor C 5 And a first inductance L 1 Wherein:
the first end of the second secondary winding is connected with the diode D 9 The anode of (2), the diode D 9 Negative pole of the first capacitor is connected with the fourth capacitor C 4 The fourth capacitor C 4 Is connected to the diode D 9 The diode D 10 The second end of the second secondary winding is connected with the diode D 10 The anode of (2), the diode D 10 Is connected to the diode D 9 And the fourth capacitor C 4 On the connection line of the diode D 11 Is connected with the fifth capacitor C 5 The negative electrode of the diode D 11 Is connected with the first inductor L 1 The first inductance L 1 Negative pole of the capacitor is connected with the fifth capacitor C 5 The positive electrode of (1).
7. The integrated vehicle charger circuit as claimed in claim 5 or 6, wherein said primary side processing circuit comprises a transistor Q 9 Transistor Q 10 Transistor Q 11 Transistor Q 12 Diode D 12 Diode D 13 Diode D 14 Diode D 15 A sixth capacitor C 6 A seventh capacitor C 7 And a second inductance L 2 Wherein:
the transistor Q 9 Is connected to the crystalTransistor Q 11 The drain of the transistor Q 11 Is connected to the transistor Q 12 The drain of said transistor Q 12 Is connected to the transistor Q 10 The source of the transistor Q 10 Is connected to the transistor Q 9 A source electrode of (a);
the diode D 12 Is connected to the transistor Q 9 The diode D 12 Is connected to the transistor Q 9 The diode D 14 Is connected to the transistor Q 11 The drain electrode of the diode D 14 Is connected to the transistor Q 11 Source of, the diode D 15 Is connected to the transistor Q 12 The diode D 15 Is connected to the transistor Q 12 The diode D 13 Is connected to the transistor Q 10 The diode D 13 Is connected to the transistor Q 10 A source electrode of (a);
the second inductor L 2 Are respectively connected with the transistors Q 9 Source electrode of, the diode D 12 Anode of (2), the transistor Q 10 And the diode D 13 The negative pole of (2), the second inductance L 2 Is connected to the first end of the primary winding, and the second end of the primary winding is connected to the sixth capacitor C 6 The first terminal of (C), the sixth capacitor C 6 Are respectively connected with the transistor Q 11 Source electrode of, the diode D 14 Anode of (2), the transistor Q 12 And the diode D 15 The negative electrode of (1), the seventh capacitor C 7 Is connected to the transistor Q 9 The drain electrode of (2), the seventh capacitor C 7 Is connected to the transistor Q 10 The source stage of (1).
8. The integrated vehicle charger circuit of claim 1 wherein said switch K is configured to be coupled to a battery charger 1 And a switch K 2 And switch K 3 Comprises at least one of the following: the relay, the metal half-field effect transistor MOSFET, the silicon controlled rectifier SCR and the insulated gate bipolar transistor IGBT.
9. The manufacturing method of the integrated vehicle-mounted charger circuit is characterized by being applied to a circuit comprising a primary side processing circuit, a transformer, a first secondary side processing circuit, a second secondary side processing circuit, a power battery, a low-voltage battery and a switch K 1 Switch K 2 Switch K 3 And a controller, wherein:
the transformer comprises a primary winding, an iron core, a first secondary winding and a second secondary winding, wherein the primary winding, the first secondary winding and the second secondary winding are arranged on the iron core;
the second secondary side processing circuit comprises a full-wave rectifying circuit and a boosting circuit;
will switch K 1 Is connected to the second end of the primary side processing circuit, the first end of the primary side processing circuit is connected to the mains supply, and the switch K is connected to the primary side processing circuit 1 Is connected to the primary winding of the transformer, connects the first secondary winding to the first end of the first secondary processing circuit, and connects the second end of the first secondary processing circuit to the switch K 2 The first interface of (2) the switch K 2 The second interface of the full-wave rectification circuit is connected with the power battery, the second secondary winding is connected with the first end of the full-wave rectification circuit, and the second end of the full-wave rectification circuit is connected with the switch K 3 The first interface of (2) the switch K 3 The second interface of the voltage booster circuit is connected with the first end of the voltage booster circuit, and the second end of the voltage booster circuit is connected with the low-voltage battery;
the controller is used for controlling the switch K 1 The switch K 2 The switch K 3 The controller controls the power supply to supply power to the power battery, the low-voltage battery, the power battery, the low-voltage battery and the commercial power to the low-voltage battery, and the controller controls the power supply to supply power to the power battery and the low-voltage batteryThe switch K 1 First interface and second interface, the switch K 2 And the switch K 3 When the first interface and the second interface are communicated, the primary side processing circuit, the transformer and the first secondary side processing circuit form a first processing circuit, and the first processing circuit is used for transmitting the first part of energy of the commercial power to the power battery; the primary side processing circuit, the transformer and the second secondary side processing circuit form a second processing circuit, and the second processing circuit is used for transmitting a second part of energy of the mains supply to the low-voltage battery;
the controller controls the switch K 2 First interface and second interface, the switch K 3 When the first interface and the second interface are communicated, the first secondary processing circuit, the transformer and the second secondary processing circuit form a third processing circuit, and the third processing circuit is used for transmitting the energy of the power battery to the low-voltage battery;
the controller controls the switch K 1 First interface and second interface, the switch K 3 When the first interface and the second interface are communicated, the primary side processing circuit, the transformer and the second secondary side processing circuit form a fourth processing circuit, and the fourth processing circuit is used for transmitting the energy of the commercial power to the low-voltage battery;
the controller controls the switch K 1 First interface and second interface, the switch K 2 When the first interface and the second interface are communicated, a fifth processing circuit is formed by the primary side processing circuit, the transformer and the first secondary side processing circuit, and the fifth processing circuit is used for transmitting part of energy of the commercial power to the power battery;
the coil structure of the primary winding and the coil structure of the first secondary winding are of a sandwich winding structure, and the total leakage inductance between the first secondary winding and the second secondary winding is in an inverse proportion relation with the total width of the primary winding, the first secondary winding and the second secondary winding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/106321 WO2020056604A1 (en) | 2018-09-18 | 2018-09-18 | Integrated vehicle-mounted charger circuit and manufacturing method therefor, and integrated vehicle-mounted charger |
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| CN110235336A CN110235336A (en) | 2019-09-13 |
| CN110235336B true CN110235336B (en) | 2023-04-04 |
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| CN113858980B (en) * | 2020-06-30 | 2023-07-11 | 比亚迪股份有限公司 | Electric vehicle, charge-discharge device, and control method therefor |
| CN112537212B (en) * | 2020-12-10 | 2022-07-01 | 广州橙行智动汽车科技有限公司 | High-voltage charging matching device, method and system and vehicle |
| CN117175759B (en) * | 2023-11-02 | 2024-01-30 | 小米汽车科技有限公司 | Charging circuit, method, device, vehicle and storage medium for low-voltage battery |
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| WO2020056604A1 (en) | 2020-03-26 |
| CN110235336A (en) | 2019-09-13 |
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