CN106379186B - Charger and automobile - Google Patents

Charger and automobile Download PDF

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Publication number
CN106379186B
CN106379186B CN201610866471.XA CN201610866471A CN106379186B CN 106379186 B CN106379186 B CN 106379186B CN 201610866471 A CN201610866471 A CN 201610866471A CN 106379186 B CN106379186 B CN 106379186B
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China
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diode
capacitor
circuit
terminal
cathode
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CN106379186A (en
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范春鹏
肖胜然
苏伟
蒋荣勋
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle 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
    • B60L53/10—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 the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • 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
    • 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
    • B60L53/10—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 the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • 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)

Abstract

The invention provides a charger and an automobile, and relates to the technical field of electric automobiles. This charger includes: the first rectifying circuit is connected with the charging interface and used for converting alternating current electric energy into direct current electric energy; the power factor correction circuit is connected with the first rectifying circuit; a wireless receiving coil for receiving the energy of the wireless transmitting terminal; the second rectifying circuit is connected with the wireless receiving coil and used for converting the received electric energy into direct-current electric energy; the direct current-to-direct current power supply circuit is connected with the power factor correction circuit and the second rectifying circuit; the direct current to direct current power supply circuit comprises a diode reverse cut-off circuit. The scheme of the invention realizes the integration of wireless charging and wired charging, saves the occupation of space and cost, and the diode reverse cut-off circuit replaces a relay to isolate the circuit, thereby simplifying the whole circuit and avoiding the fault of the complex circuit.

Description

Charger and automobile
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a charger and an automobile.
Background
Because the electric automobile drives the automobile by taking the vehicle-mounted power supply as power, the influence on the environment is relatively small compared with the traditional automobile, and the electric automobile has a widely-seen prospect.
The existing electric automobile meets the requirements of users in order to be suitable for more application scenes, and the charging mode comprises wireless charging and wired charging. In order to realize the two charging modes, two sets of devices, namely a wired charger and a wireless charger, are often installed on the automobile. In addition, in order to reduce cost and save space, a wired charger and a wireless charger are integrally designed, and share a direct current/direct current power circuit DC/CD to charge a battery pack.
In order to prevent the interface of the charger from being electrified, a relay connection mode is often used. However, the relay is used for connection, and a relay control circuit and a corresponding auxiliary power supply are required to be added, so that the overall structure circuit of the charger is complex and faults are easy to occur.
Disclosure of Invention
The invention aims to provide a charger and an automobile, which not only realize the integration of wireless charging and wired charging and reduce the cost and the occupation of the space of an automobile body, but also isolate the circuit by replacing a relay with a diode reverse cut-off circuit, simplify the whole circuit and avoid the fault problem caused by the complexity of the circuit.
In order to achieve the above object, an embodiment of the present invention provides a charger, including:
the first rectifying circuit is connected with the charging interface and used for converting alternating current electric energy into direct current electric energy;
the power factor correction circuit is connected with the first rectifying circuit;
a wireless receiving coil for receiving the energy of the wireless transmitting terminal;
the second rectifying circuit is connected with the wireless receiving coil and used for converting the received electric energy into direct-current electric energy;
the direct current-to-direct current power supply circuit is connected with the power factor correction circuit and the second rectifying circuit; wherein the content of the first and second substances,
the direct current to direct current power supply circuit comprises a diode reverse cut-off circuit.
When the charger is charged in a wired mode, the commercial power is rectified through the first rectifying circuit, the alternating current electric energy is converted into the fluctuating direct current electric energy, the fluctuating direct current is corrected through the power factor correction circuit after conversion, the direct current is finally converted into the direct current power supply circuit to charge the battery pack, and at the moment, due to the reverse cut-off of the diode reverse cut-off circuit, the influence of a wireless charging part circuit is avoided; when the wireless charging is used, the transmitting end of the wireless charging ground energy transmits energy, the wireless receiving coil of the charger receives the energy generated by the transmitting end, the energy is converted into direct current through the second rectifying circuit in a rectifying mode, and then the direct current is converted into direct current to charge the battery pack through the direct current to direct current power supply circuit. Therefore, the charger can realize wired charging and wireless charging through the circuit, space occupation and cost are saved, the diode reverse cut-off circuit replaces a relay, the circuit is isolated, the whole circuit is simplified, and faults caused by complex circuits are avoided.
The first rectifying circuit comprises a first diode, a second diode, a third diode and a fourth diode; wherein the content of the first and second substances,
the anode of the first diode and the cathode of the third diode are both connected with the first end of the charging interface;
the anode of the second diode and the cathode of the fourth diode are both connected with the second end of the charging interface;
the cathode of the first diode is connected with the cathode of the second diode;
and the anode of the third diode is connected with the anode of the fourth diode.
Wherein the power factor correction circuit comprises: the first inductor, the first Metal Oxide Semiconductor (MOS) transistor, the fifth diode and the sixth diode; wherein the content of the first and second substances,
the first end of the first inductor and the anode of the fifth diode are both connected with the cathode of the second diode;
the second end of the first inductor and the source electrode of the first MOS tube are both connected with the anode of the sixth diode;
the drain electrode of the first MOS tube is connected with the anode of the fourth diode;
and the cathode of the fifth diode is connected with the cathode of the sixth diode.
Wherein the second rectification circuit includes: a seventh diode, an eighth diode, a ninth diode, and a twelfth diode; wherein the content of the first and second substances,
the anode of the seventh diode and the cathode of the ninth diode are both connected with the first end of the wireless receiving coil;
the anode of the eighth diode and the cathode of the twelfth diode are both connected with the second end of the wireless receiving coil;
the negative electrode of the seventh diode is connected with the negative electrode of the eighth diode;
and the anode of the ninth diode is connected with the anode of the twelfth diode.
Wherein, the DC-to-DC power supply circuit comprises:
a first capacitor group connected in parallel with the plurality of capacitors;
the high-frequency square wave generating circuit is connected with the first capacitor bank;
the transformer circuit is connected with the high-frequency square wave generating circuit;
a third rectifying circuit connected to the transformer circuit;
and the second capacitor group is connected with the third rectifying circuit in parallel.
Wherein the diode reverse blocking circuit includes: a twenty-first diode and a twenty-second diode; the first capacitor bank includes: the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor and the seventh capacitor; wherein the content of the first and second substances,
the first end of the first capacitor, the first end of the second capacitor, the first end of the third capacitor and the first end of the fourth capacitor are connected with the cathode of the sixth diode;
the second end of the first capacitor, the second end of the second capacitor, the second end of the third capacitor and the second end of the fourth capacitor are connected with the drain electrode of the first MOS tube;
the first end of the fifth capacitor, the first end of the sixth capacitor and the first end of the seventh capacitor are connected with the cathode of the eighth diode;
the second end of the fifth capacitor, the second end of the sixth capacitor and the second end of the seventh capacitor are all connected with the anode of the twelfth pole tube;
the first end of the seventh capacitor is also connected with the anode of the twenty-first diode;
the cathode of the twenty-first diode is connected with the first end of the fourth capacitor;
the second end of the seventh capacitor is also connected with the anode of the twenty-second diode;
and the cathode of the twenty-second diode is connected with the second end of the fourth capacitor.
Wherein, the high frequency square wave generating circuit comprises: the MOS transistor comprises a second MOS transistor, a third MOS transistor, a fourth MOS transistor and a fifth MOS transistor; wherein the content of the first and second substances,
the drain electrode of the second MOS tube and the drain electrode of the third MOS tube are both connected with the first end of the fourth capacitor;
the source electrode of the fourth MOS tube and the source electrode of the fifth MOS tube are both connected with the second end of the fourth capacitor;
the source electrode of the second MOS tube is connected with the drain electrode of the fourth MOS tube;
and the source electrode of the third MOS tube is connected with the drain electrode of the fifth MOS tube.
Wherein the transformer circuit comprises: a second inductor, an eighth capacitor and a transformer; wherein the content of the first and second substances,
the first end of the second inductor is connected with the source electrode of the second MOS tube;
the first end of the eighth capacitor is connected with the source electrode of the third MOS tube;
the second end of the second inductor is connected with the first end of the primary side of the transformer;
and the second end of the eighth capacitor is connected with the second end of the primary side of the transformer.
Wherein the third rectification circuit includes: an eleventh diode, a twelfth diode, a thirteenth diode, and a fourteenth diode; wherein the content of the first and second substances,
the anode of the eleventh diode and the cathode of the thirteenth diode are both connected with the second end of the secondary side of the transformer;
the anode of the twelfth diode and the cathode of the fourteenth diode are both connected with the first end of the secondary side of the transformer;
the negative electrode of the eleventh diode is connected with the negative electrode of the twelfth diode;
the anode of the thirteenth diode is connected to the anode of the fourteenth diode.
Wherein the second capacitance group comprises: a ninth capacitor, a tenth capacitor, an eleventh capacitor and a twelfth capacitor; wherein the content of the first and second substances,
the first end of the ninth capacitor, the first end of the tenth capacitor, the first end of the eleventh capacitor and the first end of the twelfth capacitor are all connected with the cathode of the twelfth diode;
a second end of the ninth capacitor, a second end of the tenth capacitor, a second end of the eleventh capacitor, and a second end of the twelfth capacitor are all connected to an anode of the fourteenth diode.
The first end of the wireless receiving coil is connected with the first end of the thirteenth capacitor;
and the second end of the wireless receiving coil is connected with the second end of the thirteenth capacitor.
In order to achieve the above object, an embodiment of the present invention further provides an automobile, including the charger as described above.
According to the automobile provided by the embodiment of the invention, when the charger is used for wired charging, the commercial power is rectified through the first rectifying circuit, the alternating current electric energy is converted into the fluctuating direct current electric energy, the fluctuating direct current after conversion is corrected by the power factor correction circuit, and finally the direct current is converted into the direct current power supply circuit to charge the battery pack, and at the moment, due to the reverse cut-off of the diode reverse cut-off circuit, the influence of a wireless charging part circuit is avoided; when the wireless charging is used, the transmitting end of the wireless charging ground energy transmits energy, the wireless receiving coil of the charger receives the energy generated by the transmitting end, the energy is converted into direct current through the second rectifying circuit in a rectifying mode, and then the direct current is converted into direct current to charge the battery pack through the direct current to direct current power supply circuit. Therefore, the charger can realize wired charging and wireless charging through the circuit, space occupation and cost are saved, the diode reverse cut-off circuit replaces a relay, the circuit is isolated, the whole circuit is simplified, and faults caused by complex circuits are avoided.
Drawings
Fig. 1 is a schematic block diagram of a charger according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a charger according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a transmitting terminal of the wireless charging ground energy.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a charger aiming at the problems that the existing electric automobile is simultaneously provided with a wired charger and a wireless charger for meeting the charging requirement, the cost and the occupied space are increased, the arrangement of other parts is influenced, and the lightweight requirement is not met.
As shown in fig. 1, a charger according to an embodiment of the present invention includes: the first rectifying circuit is connected with the charging interface and used for converting alternating current electric energy into direct current electric energy; the power factor correction circuit is connected with the first rectifying circuit; a wireless receiving coil L1 for receiving the energy of the wireless transmitting end; the second rectifying circuit is connected with the wireless receiving coil L1 and is used for converting the received electric energy into direct-current electric energy; the direct current-to-direct current power supply circuit is connected with the power factor correction circuit and the second rectifying circuit; the direct current to direct current power supply circuit comprises a diode reverse cut-off circuit.
When the charger of the embodiment is used for wired charging, the commercial power is rectified through the first rectifying circuit, the alternating current electric energy is converted into the fluctuating direct current electric energy, the fluctuating direct current is corrected by the power factor correction circuit after conversion, the direct current is finally converted into the direct current power supply circuit to charge the battery pack, and at the moment, due to the reverse cut-off of the diode reverse cut-off circuit, the influence of a wireless charging part circuit is avoided; when the wireless charging is used, the transmitting end of the wireless charging ground energy transmits energy, the wireless receiving coil of the charger receives the energy generated by the transmitting end, the energy is converted into direct current through the second rectifying circuit in a rectifying mode, and then the direct current is converted into direct current to charge the battery pack through the direct current to direct current power supply circuit. Therefore, the charger can realize wired charging and wireless charging through the circuit, space occupation and cost are saved, the diode reverse cut-off circuit replaces a relay, the circuit is isolated, the whole circuit is simplified, and faults caused by complex circuits are avoided.
Specifically, as shown in fig. 2, the first rectifying circuit includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4; the anode of the first diode D1 and the cathode of the third diode D3 are both connected with the first end of the charging interface; the anode of the second diode D2 and the cathode of the fourth diode D4 are both connected with the second end of the charging interface; the cathode of the first diode D1 is connected with the cathode of the second diode D2; the anode of the third diode D3 is connected to the anode of the fourth diode D4.
After receiving the commercial power, the charging interface rectifies the commercial power through the D1, D2, D3 and D4 of the first rectifying circuit to obtain a fluctuating direct current.
In this embodiment, as shown in fig. 2, the power factor correction circuit includes: a first inductor L2, a first MOS transistor Q1, a fifth diode D5 and a sixth diode D6; wherein the first end of the first inductor L2 and the anode of the fifth diode D5 are both connected with the cathode of the second diode D2; the second end of the first inductor L2 and the source of the first MOS transistor Q1 are both connected with the anode of the sixth diode D6; the drain electrode of the first MOS transistor Q1 is connected with the anode of the fourth diode D4; the cathode of the fifth diode D5 is connected to the cathode of the sixth diode D6.
Thus, the direct current rectified by the first rectifying circuit is subjected to power factor correction by the power factor correction circuit. And when the wireless charging is carried out, the D5 and the D6 are reversely cut off, and the charging interface of the wired charging cannot be charged.
More specifically, as shown in fig. 2, the second rectification circuit includes: a seventh diode D7, an eighth diode D8, a ninth diode D9, and a twelfth diode D10; wherein an anode of the seventh diode D7 and a cathode of the ninth diode D9 are both connected with the first end of the wireless receiving coil L1; the anode of the eighth diode D8 and the cathode of the twelfth diode D10 are both connected with the second end of the wireless receiving coil L1; the cathode of the seventh diode D7 is connected with the cathode of the eighth diode D8; the anode of the ninth diode D9 is connected to the anode of the twelfth diode D10.
During wireless charging, the second rectifying circuit rectifies the high-frequency square wave received by the L1 through the D7, the D8, the D9 and the D10 to obtain rectified direct current.
It should be noted that, in order to store the processed dc power in the battery pack, in the charger of the above embodiment, as shown in fig. 2, the dc-to-dc power supply circuit includes: a first capacitor group connected in parallel with the plurality of capacitors; the high-frequency square wave generating circuit is connected with the first capacitor bank; the transformer circuit is connected with the high-frequency square wave generating circuit; a third rectifying circuit connected to the transformer circuit; and the second capacitor group is connected with the third rectifying circuit in parallel.
Wherein the diode reverse blocking circuit includes: a twenty-first diode D21 and a twenty-second diode D22; the first capacitor bank includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, and a seventh capacitor C7; wherein a first terminal of the first capacitor C1, a first terminal of the second capacitor C2, a first terminal of the third capacitor C3, and a first terminal of the fourth capacitor C4 are all connected to a cathode of the sixth diode D6; a second end of the first capacitor C1, a second end of the second capacitor C2, a second end of the third capacitor C3 and a second end of the fourth capacitor C4 are all connected with the drain of the first MOS transistor Q1; a first end of the fifth capacitor C5, a first end of the sixth capacitor C6 and a first end of the seventh capacitor C7 are all connected to the cathode of the eighth diode D8; a second terminal of the fifth capacitor C5, a second terminal of the sixth capacitor C6 and a second terminal of the seventh capacitor C7 are all connected to the anode of the twelfth diode D10; the first end of the seventh capacitor C7 is further connected with the anode of the twenty-first diode D21; the cathode of the twenty-first diode D21 is connected with the first end of the fourth capacitor C4; the second end of the seventh capacitor C7 is also connected with the anode of the twenty-second diode D22; the cathode of the twenty-second diode D22 is connected to the second terminal of the fourth capacitor C4.
Further, the high-frequency square wave generating circuit includes: the second MOS transistor Q2, the third MOS transistor Q3, the fourth MOS transistor Q4 and the fifth MOS transistor Q5; the drain electrode of the second MOS transistor Q2 and the drain electrode of the third MOS transistor Q3 are both connected with the first end of the fourth capacitor C4; the source electrode of the fourth MOS transistor Q4 and the source electrode of the fifth MOS transistor Q5 are both connected with the second end of the fourth capacitor C4; the source electrode of the second MOS transistor Q2 is connected with the drain electrode of the fourth MOS transistor Q4; the source of the third MOS transistor Q3 is connected to the drain of the fifth MOS transistor Q5.
Further, the transformer circuit includes: a second inductor L3, an eighth capacitor C8 and a transformer T1; a first end of the second inductor L3 is connected with the source of the second MOS transistor Q2; a first end of the eighth capacitor C8 is connected with the source of the third MOS transistor Q3; a second end of the second inductor L3 is connected to a first end of the primary side of the transformer T1; a second terminal of the eighth capacitor C8 is connected to a second terminal of the primary side of the transformer T1.
In addition, the third rectification circuit includes: an eleventh diode D11, a twelfth diode D12, a thirteenth diode D13, and a fourteenth diode D14; wherein the anode of the eleventh diode D11 and the cathode of the thirteenth diode D13 are both connected to the second end of the secondary side of the transformer T1; the anode of the twelfth diode D12 and the cathode of the fourteenth diode D14 are both connected with the first end of the secondary side of the transformer T1; the cathode of the eleventh diode D11 is connected with the cathode of the twelfth diode D12; an anode of the thirteenth diode D13 is connected to an anode of the fourteenth diode D14.
And the second capacitor bank comprises: a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, and a twelfth capacitor C12; wherein a first terminal of the ninth capacitor C9, a first terminal of the tenth capacitor C10, a first terminal of the eleventh capacitor C11 and a first terminal of the twelfth capacitor C12 are all connected to a cathode of the twelfth diode D12; a second terminal of the ninth capacitor C9, a second terminal of the tenth capacitor C10, a second terminal of the eleventh capacitor C11, and a second terminal of the twelfth capacitor C12 are all connected to an anode of the fourteenth diode D14.
The direct current-to-direct current power supply circuit leads the converted direct current into a high-frequency square wave generating circuit, square waves are generated through control of Q2, Q3, Q4 and Q5, and the square waves are rectified through the change of a transformer circuit and D11, D12, D13 and D14 of a third rectifying circuit to charge the battery pack. D21 and D22 turn on during wireless charging, and D21 and D22 turn off in reverse during wired charging, so that the influence of a wireless charging part circuit is avoided.
It should also be noted that, as shown in fig. 2, the first terminal of the wireless receiving coil L1 is connected to the first terminal of the thirteenth capacitor C13; a second terminal of the wireless receiving coil L1 is connected with a second terminal of a thirteenth capacitor C13.
In order to cooperate with the wireless charging of the charger according to the embodiment of the present invention, the transmitting end circuit of the wireless charging ground energy is shown in fig. 3, and includes: a fifteenth diode D15, a sixteenth diode D16, a seventeenth diode D17, an eighteenth diode D18, a nineteenth diode D19, a twentieth diode D20, a third inductor L4, a fourth inductor L5, a fifth inductor L6, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a sixth MOS transistor Q6, a seventh MOS transistor Q7, an eighth MOS transistor Q8, a ninth MOS transistor Q9 and a tenth MOS transistor Q10; wherein, the positive pole of D17 and the negative pole of D19 are connected to the first end of the charging power source, the positive pole of D18 and the negative pole of D20 are connected to the second end of the charging power source, the negative pole of D17 is connected to the negative pole of D18, the positive pole of D19 is connected to the positive pole of D20, the first end of L4 and the positive pole of D15 are connected to the negative pole of D8, the second end of L4 and the source of Q6 are connected to the positive pole of D16, the drain of Q6 is connected to the positive pole of D20, the negative pole of D15 is connected to the negative pole of D16, the first end of C14, the first end of C15, the first end of C16 and the first end of C17 are connected to the negative pole of D16, the second end of C14 and the second end of C14 are connected to the drain of Q14, the drain of Q14 is connected to the source 14, the drain of Q14 and the source 14 is connected to the drain 14, a first terminal of L5 is connected to the source of Q7, a first terminal of C18 is connected to the source of Q8, a second terminal of L5 is connected to a first terminal of L6, and a second terminal of C18 is connected to a second terminal of L6.
In summary, when the charger according to the embodiment of the present invention uses wired charging, the commercial power is rectified by the first rectification circuit, the ac electric energy is converted into the fluctuating dc electric energy, the fluctuating dc electric energy is corrected by the power factor correction circuit, and finally the dc-dc power supply circuit charges the battery pack, and at this time, due to the reverse cut-off of the diode reverse cut-off circuit, the influence of the wireless charging part circuit is avoided; when the wireless charging is used, the transmitting end of the wireless charging ground energy transmits energy, the wireless receiving coil of the charger receives the energy generated by the transmitting end, the energy is converted into direct current through the second rectifying circuit in a rectifying mode, and then the direct current is converted into direct current to charge the battery pack through the direct current to direct current power supply circuit. Therefore, the charger can realize wired charging and wireless charging through the circuit, space occupation and cost are saved, the diode reverse cut-off circuit replaces a relay, the circuit is isolated, the whole circuit is simplified, and faults caused by complex circuits are avoided.
The embodiment of the invention also provides an automobile which comprises the charger.
When the automobile is charged by the charger in a wired mode, commercial power is rectified by the first rectifying circuit, alternating current electric energy is converted into fluctuating direct current electric energy, the fluctuating direct current is corrected by the power factor correction circuit after conversion, the direct current is finally converted into direct current power supply circuit to charge the battery pack, and at the moment, due to the reverse cut-off of the diode reverse cut-off circuit, the influence of a wireless charging part circuit is avoided; when the wireless charging is used, the transmitting end of the wireless charging ground energy transmits energy, the wireless receiving coil of the charger receives the energy generated by the transmitting end, the energy is converted into direct current through the second rectifying circuit in a rectifying mode, and then the direct current is converted into direct current to charge the battery pack through the direct current to direct current power supply circuit. Therefore, the charger can realize wired charging and wireless charging through the circuit, space occupation and cost are saved, the diode reverse cut-off circuit replaces a relay, the circuit is isolated, the whole circuit is simplified, and faults caused by complex circuits are avoided.
It should be noted that the vehicle is a vehicle to which the charger is applied, and the implementation manner of the embodiment of the charger is applicable to the vehicle and can achieve the same technical effect.
The exemplary embodiments described above are described with reference to the drawings, and many different forms and embodiments of the invention may be made without departing from the spirit and teaching of the invention, therefore, the invention is not to be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of elements may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, components, and/or groups thereof. Unless otherwise indicated, a range of values, when stated, includes the upper and lower limits of the range and any subranges therebetween.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (7)

1. A charger, characterized by, includes:
the first rectifying circuit is connected with the charging interface and used for converting alternating current electric energy into direct current electric energy;
the power factor correction circuit is connected with the first rectifying circuit;
a wireless receiving coil (L1) for receiving the energy of the wireless transmitting end;
the second rectifying circuit is connected with the wireless receiving coil (L1) and is used for converting the received electric energy into direct-current electric energy;
the direct current-to-direct current power supply circuit is connected with the power factor correction circuit and the second rectifying circuit; wherein the content of the first and second substances,
the direct current to direct current power supply circuit comprises a diode reverse cut-off circuit;
the DC-to-DC power supply circuit includes:
a first capacitor group connected in parallel with the plurality of capacitors;
the high-frequency square wave generating circuit is connected with the first capacitor bank;
the transformer circuit is connected with the high-frequency square wave generating circuit;
a third rectifying circuit connected to the transformer circuit;
a second capacitor group connected in parallel with the plurality of capacitors and connected to the third rectifying circuit;
wherein the first rectification circuit comprises a first diode (D1), a second diode (D2), a third diode (D3), and a fourth diode (D4); wherein the content of the first and second substances,
the anode of the first diode (D1) and the cathode of the third diode (D3) are both connected with the first end of the charging interface;
the anode of the second diode (D2) and the cathode of the fourth diode (D4) are both connected with the second end of the charging interface;
the cathode of the first diode (D1) is connected with the cathode of the second diode (D2);
the anode of the third diode (D3) is connected with the anode of the fourth diode (D4);
the power factor correction circuit includes: the circuit comprises a first inductor (L2), a first Metal Oxide Semiconductor (MOS) transistor (Q1), a fifth diode (D5) and a sixth diode (D6); wherein the content of the first and second substances,
a first end of the first inductor (L2) and an anode of the fifth diode (D5) are both connected with a cathode of the second diode (D2);
the second end of the first inductor (L2) and the source electrode of the first MOS tube (Q1) are both connected with the positive electrode of the sixth diode (D6);
the drain electrode of the first MOS tube (Q1) is connected with the positive electrode of the fourth diode (D4);
the cathode of the fifth diode (D5) is connected to the cathode of the sixth diode (D6);
the second rectification circuit includes: a seventh diode (D7), an eighth diode (D8), a ninth diode (D9), and a twelfth diode (D10); wherein the content of the first and second substances,
the anode of the seventh diode (D7) and the cathode of the ninth diode (D9) are both connected with the first end of the wireless receiving coil (L1);
the anode of the eighth diode (D8) and the cathode of the twelfth diode (D10) are both connected with the second end of the wireless receiving coil (L1);
the cathode of the seventh diode (D7) is connected to the cathode of the eighth diode (D8);
the anode of the ninth diode (D9) is connected to the anode of the twelfth diode (D10);
the diode reverse blocking circuit includes: a twenty-first diode (D21) and a twenty-second diode (D22);
the first capacitor bank includes: a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a fifth capacitor (C5), a sixth capacitor (C6) and a seventh capacitor (C7); wherein the content of the first and second substances,
a first terminal of the first capacitor (C1), a first terminal of the second capacitor (C2), a first terminal of the third capacitor (C3), and a first terminal of the fourth capacitor (C4) are all connected to a cathode of the sixth diode (D6);
a second end of the first capacitor (C1), a second end of the second capacitor (C2), a second end of the third capacitor (C3) and a second end of the fourth capacitor (C4) are connected with a drain electrode of the first MOS transistor (Q1);
a first terminal of the fifth capacitor (C5), a first terminal of the sixth capacitor (C6) and a first terminal of the seventh capacitor (C7) are all connected to the cathode of the eighth diode (D8);
a second terminal of the fifth capacitor (C5), a second terminal of the sixth capacitor (C6) and a second terminal of the seventh capacitor (C7) are all connected to the anode of the twelfth pole tube (D10);
the first end of the seventh capacitor (C7) is also connected with the anode of the twenty-first diode (D21);
a cathode of the twenty-first diode (D21) is connected with a first end of the fourth capacitor (C4);
the second end of the seventh capacitor (C7) is further connected with the anode of the twenty-second diode (D22);
the cathode of the twenty-second diode (D22) is connected with the second end of the fourth capacitor (C4);
the transformer circuit includes: a second inductor (L3), an eighth capacitor (C8) and a transformer (T1);
the second end of the second inductor (L3) is connected with the first end of the primary side of the transformer (T1);
a second terminal of the eighth capacitor (C8) is connected to the second terminal of the primary side of the transformer (T1).
2. The charger according to claim 1, characterized in that said high-frequency square wave generating circuit comprises: a second MOS transistor (Q2), a third MOS transistor (Q3), a fourth MOS transistor (Q4) and a fifth MOS transistor (Q5); wherein the content of the first and second substances,
the drain electrode of the second MOS transistor (Q2) and the drain electrode of the third MOS transistor (Q3) are both connected with the first end of the fourth capacitor (C4);
the source electrode of the fourth MOS transistor (Q4) and the source electrode of the fifth MOS transistor (Q5) are both connected with the second end of the fourth capacitor (C4);
the source electrode of the second MOS tube (Q2) is connected with the drain electrode of the fourth MOS tube (Q4);
the source electrode of the third MOS tube (Q3) is connected with the drain electrode of the fifth MOS tube (Q5).
3. The charger according to claim 2, characterized in that,
a first end of the second inductor (L3) is connected with a source electrode of the second MOS transistor (Q2);
the first end of the eighth capacitor (C8) is connected with the source of the third MOS transistor (Q3).
4. The charger according to claim 3, characterized in that said third rectifying circuit comprises: an eleventh diode (D11), a twelfth diode (D12), a thirteenth diode (D13), and a fourteenth diode (D14); wherein the content of the first and second substances,
the anode of the eleventh diode (D11) and the cathode of the thirteenth diode (D13) are both connected with the second end of the secondary side of the transformer (T1);
the anode of the twelfth diode (D12) and the cathode of the fourteenth diode (D14) are both connected with the first end of the secondary side of the transformer (T1);
a cathode of the eleventh diode (D11) is connected to a cathode of the twelfth diode (D12);
the anode of the thirteenth diode (D13) is connected to the anode of the fourteenth diode (D14).
5. The charger according to claim 4, characterized in that said second capacitor bank comprises: a ninth capacitance (C9), a tenth capacitance (C10), an eleventh capacitance (C11), and a twelfth capacitance (C12); wherein the content of the first and second substances,
a first terminal of the ninth capacitor (C9), a first terminal of the tenth capacitor (C10), a first terminal of the eleventh capacitor (C11), and a first terminal of the twelfth capacitor (C12) are all connected to a cathode of the twelfth diode (D12);
a second terminal of the ninth capacitor (C9), a second terminal of the tenth capacitor (C10), a second terminal of the eleventh capacitor (C11), and a second terminal of the twelfth capacitor (C12) are all connected to the anode of the fourteenth diode (D14).
6. The charger according to claim 1, characterized in that a first end of said wireless receiving coil (L1) is connected with a first end of a thirteenth capacitor (C13);
a second terminal of the wireless receiving coil (L1) is connected with a second terminal of a thirteenth capacitor (C13).
7. An automobile, characterized in that it comprises a charger according to any one of claims 1 to 6.
CN201610866471.XA 2016-09-29 2016-09-29 Charger and automobile Active CN106379186B (en)

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