CN111231669A - Vehicle-mounted charger, power supply system of electric vehicle and electric vehicle - Google Patents
Vehicle-mounted charger, power supply system of electric vehicle and electric vehicle Download PDFInfo
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- CN111231669A CN111231669A CN201811334214.7A CN201811334214A CN111231669A CN 111231669 A CN111231669 A CN 111231669A CN 201811334214 A CN201811334214 A CN 201811334214A CN 111231669 A CN111231669 A CN 111231669A
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
- B60L2210/12—Buck converters
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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
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present disclosure relates to an on-vehicle charger, a power supply system of an electric vehicle, and an electric vehicle. The vehicle-mounted charger includes: the rectifying module is respectively connected with the charging gun and the DC-DC converter and is used for converting the alternating current from the charging gun into direct current and transmitting the direct current to the DC-DC converter; the voltage conversion module is connected with the rectification module, is respectively connected with the power battery and the DC-DC converter, and is used for converting the direct current from the rectification module into voltage and then transmitting the voltage to the power battery, or is used for converting the direct current from the power battery into voltage and then transmitting the voltage to the DC-DC converter; and the auxiliary power supply module is used for supplying power to the DC-DC converter, the rectifying module and the voltage conversion module. When the voltage of the DC-DC converter is pulled to be lower, the auxiliary power supply module in the vehicle-mounted charger can supply power, and the whole vehicle does not need to be restarted.
Description
Technical Field
The disclosure relates to the field of electric vehicle control, in particular to an on-board charger, a power supply system of an electric vehicle and the electric vehicle.
Background
In an electric vehicle, a DC-DC converter is a junction for supplying power to all low-voltage electric appliances, and directly gets electricity from a direct-current bus to convert high-voltage electricity of a power battery into low-voltage electricity suitable for charging a low-voltage storage battery and normal operation of the low-voltage electric appliances.
Currently, when the voltage of the DC-DC converter is pulled to be low, the system can not work normally. When the serious power failure of the storage battery is lower than the lower limit value of all low-voltage loads of the whole vehicle, the electric appliances of the whole vehicle are paralyzed, and the whole vehicle must be restarted. In addition, under the condition that the power battery and the low-voltage storage battery of the whole vehicle are in short of electricity, after the charging gun is inserted, the power supply of the low-voltage control system is supplied by the auxiliary power supply module in the vehicle-mounted charger, and the starting probability of the auxiliary power supply module is low.
Disclosure of Invention
The purpose of this disclosure is to provide a simple, effectual on-vehicle charger, electric vehicle's power supply system, electric vehicle.
In order to achieve the above object, the present disclosure provides an in-vehicle charger. The on-vehicle charger includes: the rectifying module is respectively connected with the charging gun and the DC-DC converter and is used for converting the alternating current from the charging gun into direct current and transmitting the direct current to the DC-DC converter; the voltage conversion module is connected with the rectification module, is respectively connected with the power battery and the DC-DC converter, and is used for converting the direct current from the rectification module into voltage and then transmitting the voltage to the power battery, or is used for converting the direct current from the power battery into voltage and then transmitting the voltage to the DC-DC converter; and the auxiliary power supply module is respectively connected with the DC-DC converter, the rectifying module and the voltage conversion module and is used for supplying power to the DC-DC converter, the rectifying module and the voltage conversion module.
Optionally, the rectifier module includes a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, and a first capacitor, wherein a drain of the first MOS transistor is connected to a drain of the second MOS transistor as a first input terminal of the rectifier module, a source of the third MOS transistor is connected to a source of the fourth MOS transistor as a second input terminal of the rectifier module, the source of the first MOS transistor is connected to a drain of the third MOS transistor and connected to one end of the first capacitor as a first output terminal of the rectifier module, and the source of the second MOS transistor is connected to a drain of the fourth MOS transistor and connected to the other end of the first capacitor as a second output terminal of the rectifier module.
Optionally, the voltage conversion module includes a fifth MOS transistor, a sixth MOS transistor, a seventh MOS transistor, an eighth MOS transistor, a ninth MOS transistor, a tenth MOS transistor, an eleventh MOS transistor, a twelfth MOS transistor, a second capacitor, a first coil, and a second coil, where a drain of the fifth MOS transistor is connected to a drain of the sixth MOS transistor and serves as a first input end of the voltage conversion module, a source of the seventh MOS transistor is connected to a source of the eighth MOS transistor and serves as a second input end of the voltage conversion module, a source of the fifth MOS transistor is connected to a drain of the seventh MOS transistor and is connected to one end of the first coil, and a source of the sixth MOS transistor is connected to a drain of the eighth MOS transistor and is connected to the other end of the first coil;
the drain electrode of the ninth MOS tube is connected with the drain electrode of the tenth MOS tube and is connected with one end of the second coil, the source electrode of the eleventh MOS tube is connected with the source electrode of the twelfth MOS tube and is connected with the other end of the second coil, the source electrode of the ninth MOS tube is connected with the drain electrode of the eleventh MOS tube and is connected with one end of the second capacitor to serve as an output end of the voltage conversion module, the source electrode of the tenth MOS tube is connected with the drain electrode of the twelfth MOS tube and is connected with the other end of the second capacitor to serve as another output end of the voltage conversion module, and the first coil and the second coil are induction coils.
Optionally, the on-board charger further comprises the DC-DC converter.
Optionally, the DC-DC converter includes a thirteenth MOS transistor, a fourteenth MOS transistor, a fifteenth MOS transistor, a sixteenth MOS transistor, a seventeenth MOS transistor, an eighteenth MOS transistor, a nineteenth MOS transistor, a twentieth MOS transistor, a third capacitor, a third coil, and a fourth coil, wherein a drain of the thirteenth MOS transistor is connected to a drain of the fourteenth MOS transistor and serves as a first input terminal of the DC-DC converter, a source of the fifteenth MOS transistor is connected to a source of the sixteenth MOS transistor and serves as a second input terminal of the DC-DC converter, a source of the thirteenth MOS transistor is connected to a drain of the fifteenth MOS transistor and is connected to one end of the third coil, and a source of the fourteenth MOS transistor is connected to a drain of the sixteenth MOS transistor and is connected to the other end of the third coil;
the drain electrode of the seventeenth MOS tube is connected with the drain electrode of the eighteenth MOS tube and is connected with one end of the fourth coil, the source electrode of the nineteenth MOS tube is connected with the source electrode of the twentieth MOS tube and is connected with the other end of the fourth coil, the source electrode of the seventeenth MOS tube is connected with the drain electrode of the nineteenth MOS tube and is connected with one end of the third capacitor to serve as an output end of the DC-DC converter, the source electrode of the eighteenth MOS tube is connected with the drain electrode of the twentieth MOS tube and is connected with the other end of the third capacitor to serve as another output end of the DC-DC converter, and the third coil and the fourth coil are induction coils.
The present disclosure also provides a power supply system of an electric vehicle. The system comprises: the vehicle-mounted charger provided by the present disclosure; the relay is used for conducting the power battery and the vehicle-mounted charger when the relay is closed so that the power battery is charged by the vehicle-mounted charger; a controller through which the DC-DC converter in the on-vehicle charger and the relay are connected, the controller for controlling opening and closing of the relay, and the controller being supplied with power by the on-vehicle charger.
The present disclosure also provides an electric vehicle including the above vehicle-mounted charger provided by the present disclosure.
The present disclosure also provides an electric vehicle including the above power supply system provided by the present disclosure.
Through the technical scheme, the vehicle-mounted charger is directly connected with the DC-DC converter, and can convert the direct current from the power battery into voltage and transmit the voltage to the DC-DC converter to supply power for a low-voltage system. Therefore, the direct connection of the DC-DC converter and the high-voltage bus is not needed, when the voltage of the DC-DC converter is pulled to be lower, the auxiliary power supply module in the vehicle-mounted charger can be used for supplying power, and the whole vehicle does not need to be restarted.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram of an exemplary embodiment of an onboard charger;
FIG. 2 is a schematic diagram of an exemplary embodiment of an electrical circuit configuration of an onboard charger;
fig. 3 is a block diagram of a power supply system of an electric vehicle according to an exemplary embodiment;
fig. 4 is a block diagram of an electric vehicle according to an exemplary embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a block diagram of an in-vehicle charger according to an exemplary embodiment. As shown in fig. 1, the in-vehicle charger 10 may include a rectifying module 11, a voltage converting module 12, and an auxiliary power supply module 13.
The rectifying module 11 is connected to the charging gun and the DC-DC converter 14, respectively, and is configured to convert the ac power from the charging gun into DC power and transmit the DC power to the DC-DC converter 14.
The voltage conversion module 12 is connected to the rectifier module, and is respectively connected to the power battery and the DC-DC converter 14, and is configured to convert the direct current from the rectifier module 11 into a voltage and transmit the voltage to the power battery, or convert the direct current from the power battery into a voltage and transmit the voltage to the DC-DC converter 14.
The auxiliary power module 13 is connected to the DC-DC converter 14, the rectifying module 11, and the voltage converting module 12, respectively, and is configured to supply power to the DC-DC converter 14, the rectifying module 11, and the voltage converting module 12.
In general, the DC-DC converter and the on-board charger are independent products, and in the embodiment of fig. 1, the on-board charger may not include the DC-DC converter, and they are developed and used together with each other. In another embodiment, the on-board charger may include a DC-DC converter, i.e., the DC-DC converter may be integrated inside the on-board charger, both developed and used as one product.
On one hand, when the whole vehicle is seriously lack of power and cannot be normally started, after the alternating current charging gun is inserted, the auxiliary power supply module can provide low voltage power for the DC-DC converter to start the DC-DC converter to normally work, and then the DC-DC converter reduces the rectified power of a power grid into 12V low voltage to supply power to all low voltage loads of the whole vehicle, so that the function of normally starting the whole vehicle under the emergency condition is realized.
On the other hand, when the voltage of the 12V low-voltage storage battery is instantly reduced due to the rear-end load voltage and is lower than the lower voltage limit of the normal work of the DC-DC converter, the function that the DC-DC converter can continue to work normally under the power supply of the auxiliary power module of the vehicle-mounted charger is achieved.
Through the technical scheme, the vehicle-mounted charger is directly connected with the DC-DC converter, and can convert the direct current from the power battery into voltage and transmit the voltage to the DC-DC converter to supply power for a low-voltage system. Therefore, the voltage range of reliable work of the DC-DC converter can be greatly improved, the DC-DC converter can be ensured to run reliably when the DC-DC converter is pulled to a lower voltage (for example, 4.5V), and a low-voltage control system can be normally started after a charging gun is plugged under the condition that the whole vehicle is completely without electricity, so that the emergency charging function of the electric vehicle under the condition of serious power feed of the whole vehicle is realized. Namely, the direct connection of the DC-DC converter with the high-voltage bus is not needed, when the voltage of the DC-DC converter is pulled to be lower, the auxiliary power supply module in the vehicle-mounted charger can supply power, and the whole vehicle does not need to be restarted.
Fig. 2 is a schematic circuit diagram of an on-board charger according to an exemplary embodiment (the auxiliary power supply module 13 is not shown). As shown in fig. 2, the rectifier module 11 may include a first MOS transistor F1, a second MOS transistor F2, a third MOS transistor F3, a fourth MOS transistor F4, and a first capacitor C1. The drain of the first MOS transistor F1 is connected to the drain of the second MOS transistor F2, and serves as the first input terminal a of the rectifier module. The source of the third MOS transistor F3 is connected to the source of the fourth MOS transistor F4 and serves as the second input terminal B of the rectifier module. The source of the first MOS transistor F1 is connected to the drain of the third MOS transistor F3, and is connected to one end of the first capacitor C1, which is used as the first output terminal of the rectifier module 11. The source of the second MOS transistor F2 is connected to the drain of the fourth MOS transistor F4, and is connected to the other end of the first capacitor C1, which is used as the second output terminal of the rectifier module 11.
In the embodiment of fig. 2, the voltage conversion module 12 may include a fifth MOS transistor F5, a sixth MOS transistor F6, a seventh MOS transistor F7, an eighth MOS transistor F8, a ninth MOS transistor F9, a tenth MOS transistor F10, an eleventh MOS transistor F11, a twelfth MOS transistor F12, a second capacitor C2, a first coil L1, and a second coil L2. The drain of the fifth MOS transistor F5 is connected to the drain of the sixth MOS transistor F6 and serves as the first input terminal of the voltage conversion module (connected to the first output terminal of the rectifier module 11), the source of the seventh MOS transistor F7 is connected to the source of the eighth MOS transistor F8 and serves as the second input terminal of the voltage conversion module (connected to the second output terminal of the rectifier module 11), the source of the fifth MOS transistor F5 is connected to the drain of the seventh MOS transistor F7 and is connected to one end of the first coil L1, and the source of the sixth MOS transistor F6 is connected to the drain of the eighth MOS transistor F8 and is connected to the other end of the first coil L1.
The drain of the ninth MOS transistor F9 is connected to the drain of the tenth MOS transistor F10 and to one end of the second coil L2. The source of the eleventh MOS transistor F11 is connected to the source of the twelfth MOS transistor F12 and to the other end of the second coil L2. The source of the ninth MOS transistor F9 is connected to the drain of the eleventh MOS transistor F11, and is connected to one end of the second capacitor C2, which serves as an output terminal C of the voltage conversion module. The source of the tenth MOS transistor F10 is connected to the drain of the twelfth MOS transistor F12, and the other end D of the second capacitor C2 is connected to serve as the other output end of the voltage conversion module. The first coil L1 and the second coil L2 are induction coils, which together act as a transformer.
In the embodiment of fig. 2, the DC-DC converter 14 may include a thirteenth MOS transistor F13, a fourteenth MOS transistor F14, a fifteenth MOS transistor F15, a sixteenth MOS transistor F16, a seventeenth MOS transistor F17, an eighteenth MOS transistor F18, a nineteenth MOS transistor F19, a twentieth MOS transistor F20, a third capacitor C3, a third coil L3, and a fourth coil L4. The drain of the thirteenth MOS transistor F13 is connected to the drain of the fourteenth MOS transistor F14 and serves as the first input terminal of the DC-DC converter (connected to the first output terminal of the rectifier module 11), the source of the fifteenth MOS transistor F15 is connected to the source of the sixteenth MOS transistor F16 and serves as the second input terminal of the DC-DC converter (connected to the second output terminal of the rectifier module 11), the source of the thirteenth MOS transistor F13 is connected to the drain of the fifteenth MOS transistor F15 and is connected to one end of the third coil L3, and the source of the fourteenth MOS transistor F14 is connected to the drain of the sixteenth MOS transistor F16 and is connected to the other end of the third coil L3.
The drain of the seventeenth MOS transistor F17 is connected to the drain of the eighteenth MOS transistor F18, to one end of the fourth coil L4, the source of the nineteenth MOS transistor F19 is connected to the source of the twentieth MOS transistor F20, to the other end of the fourth coil L4, the source of the seventeenth MOS transistor F17 is connected to the drain of the nineteenth MOS transistor F19, to one end of a third capacitor C3 serving as an output E-terminal of the DC-DC converter, the source of the eighteenth MOS transistor F18 is connected to the drain of the twentieth MOS transistor F20, to the other end F-terminal of the third capacitor C3 serving as the other output terminal of the DC-DC converter 14, and the third coil L3 and the fourth coil L4 are induction coils, which together serve as a transformer.
The end A and the end B can be connected with the anode and the cathode of a charging gun, the end C and the end D can be connected with the anode and the cathode of a power battery, and the end E and the end F can be connected with the anode and the cathode of a low-voltage system of the electric vehicle.
Based on the same inventive concept, the present disclosure also provides a power supply system of an electric vehicle. Fig. 3 is a block diagram of a power supply system of an electric vehicle according to an exemplary embodiment. As shown in fig. 3, the power supply system 100 of the electric vehicle may include the above-described on-board charger 10 (including the DC-DC converter 14), the relay 20, and the controller 30.
The on-board charger and the power battery are connected through a relay 20, and the relay 20 is used to turn on the power battery and the on-board charger 10 when closed, so that the power battery is charged by the on-board charger 10.
The DC-DC converter in the in-vehicle charger 10 and the relay 20 are connected through a controller 30, the controller 30 is used to control the opening and closing of the relay 20, and the controller 30 is powered by the in-vehicle charger 10.
The present disclosure also provides an electric vehicle including the above vehicle-mounted charger 10 provided by the present disclosure.
The present disclosure also provides an electric vehicle, and fig. 4 is a block diagram of an electric vehicle provided in an exemplary embodiment. As shown in fig. 4, the electric vehicle 1000 includes the above power supply system 100 provided by the present disclosure.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (8)
1. An on-vehicle charger, characterized in that the on-vehicle charger comprises:
the rectifying module is respectively connected with the charging gun and the DC-DC converter and is used for converting the alternating current from the charging gun into direct current and transmitting the direct current to the DC-DC converter;
the voltage conversion module is connected with the rectification module, is respectively connected with the power battery and the DC-DC converter, and is used for converting the direct current from the rectification module into voltage and then transmitting the voltage to the power battery, or is used for converting the direct current from the power battery into voltage and then transmitting the voltage to the DC-DC converter;
and the auxiliary power supply module is respectively connected with the DC-DC converter, the rectifying module and the voltage conversion module and is used for supplying power to the DC-DC converter, the rectifying module and the voltage conversion module.
2. The vehicle-mounted charger according to claim 1, wherein the rectifying module comprises a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, and a first capacitor, wherein a drain of the first MOS transistor is connected to a drain of the second MOS transistor and serves as a first input terminal of the rectifying module, a source of the third MOS transistor is connected to a source of the fourth MOS transistor and serves as a second input terminal of the rectifying module, a source of the first MOS transistor is connected to a drain of the third MOS transistor and is connected to one end of the first capacitor and serves as a first output terminal of the rectifying module, and a source of the second MOS transistor is connected to a drain of the fourth MOS transistor and is connected to the other end of the first capacitor and serves as a second output terminal of the rectifying module.
3. The vehicle-mounted charger according to claim 1, wherein the voltage conversion module comprises a fifth MOS transistor, a sixth MOS transistor, a seventh MOS transistor, an eighth MOS transistor, a ninth MOS transistor, a tenth MOS transistor, an eleventh MOS transistor, a twelfth MOS transistor, a second capacitor, a first coil, and a second coil, wherein a drain of the fifth MOS transistor is connected to a drain of the sixth MOS transistor as a first input terminal of the voltage conversion module, a source of the seventh MOS transistor is connected to a source of the eighth MOS transistor as a second input terminal of the voltage conversion module, a source of the fifth MOS transistor is connected to a drain of the seventh MOS transistor and connected to one end of the first coil, and a source of the sixth MOS transistor is connected to a drain of the eighth MOS transistor and connected to the other end of the first coil;
the drain electrode of the ninth MOS tube is connected with the drain electrode of the tenth MOS tube and is connected with one end of the second coil, the source electrode of the eleventh MOS tube is connected with the source electrode of the twelfth MOS tube and is connected with the other end of the second coil, the source electrode of the ninth MOS tube is connected with the drain electrode of the eleventh MOS tube and is connected with one end of the second capacitor to serve as an output end of the voltage conversion module, the source electrode of the tenth MOS tube is connected with the drain electrode of the twelfth MOS tube and is connected with the other end of the second capacitor to serve as another output end of the voltage conversion module, and the first coil and the second coil are induction coils.
4. The in-vehicle charger of claim 1, further comprising the DC-DC converter.
5. The in-vehicle charger according to any one of claims 1 to 4, the DC-DC converter comprising a thirteenth MOS transistor, a fourteenth MOS transistor, a fifteenth MOS transistor, a sixteenth MOS transistor, a seventeenth MOS transistor, an eighteenth MOS transistor, a nineteenth MOS transistor, a twentieth MOS transistor, a third capacitor, a third coil, a fourth coil, wherein the drain of the thirteenth MOS transistor is connected with the drain of the fourteenth MOS transistor and serves as the first input end of the DC-DC converter, the source electrode of the fifteenth MOS tube is connected with the source electrode of the sixteenth MOS tube and is used as the second input end of the DC-DC converter, the source electrode of the thirteenth MOS tube is connected with the drain electrode of the fifteenth MOS tube, the source electrode of the fourteenth MOS tube is connected with the drain electrode of the sixteenth MOS tube and is connected with the other end of the third coil in parallel;
the drain electrode of the seventeenth MOS tube is connected with the drain electrode of the eighteenth MOS tube and is connected with one end of the fourth coil, the source electrode of the nineteenth MOS tube is connected with the source electrode of the twentieth MOS tube and is connected with the other end of the fourth coil, the source electrode of the seventeenth MOS tube is connected with the drain electrode of the nineteenth MOS tube and is connected with one end of the third capacitor to serve as an output end of the DC-DC converter, the source electrode of the eighteenth MOS tube is connected with the drain electrode of the twentieth MOS tube and is connected with the other end of the third capacitor to serve as another output end of the DC-DC converter, and the third coil and the fourth coil are induction coils.
6. An electric power supply system for an electric vehicle, the system comprising:
the in-vehicle charger according to claim 4 or 5;
the relay is used for conducting the power battery and the vehicle-mounted charger when the relay is closed so that the power battery is charged by the vehicle-mounted charger;
a controller through which the DC-DC converter in the on-vehicle charger and the relay are connected, the controller for controlling opening and closing of the relay, and the controller being supplied with power by the on-vehicle charger.
7. An electric vehicle characterized by comprising the on-vehicle charger of any one of claims 1 to 5.
8. An electric vehicle characterized by comprising the power supply system of claim 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811334214.7A CN111231669B (en) | 2018-11-09 | 2018-11-09 | Vehicle-mounted charger, power supply system of electric vehicle and electric vehicle |
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| CN201811334214.7A CN111231669B (en) | 2018-11-09 | 2018-11-09 | Vehicle-mounted charger, power supply system of electric vehicle and electric vehicle |
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| CN111231669A true CN111231669A (en) | 2020-06-05 |
| CN111231669B CN111231669B (en) | 2022-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114312390A (en) * | 2020-09-30 | 2022-04-12 | 比亚迪股份有限公司 | Charging device, charging control method, and vehicle |
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| CN108075651A (en) * | 2017-12-13 | 2018-05-25 | 杭州富特科技股份有限公司 | Vehicle-mounted charging device and system |
| CN108482126A (en) * | 2018-03-02 | 2018-09-04 | 陈慧仪 | A kind of new-energy automobile activation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114312390A (en) * | 2020-09-30 | 2022-04-12 | 比亚迪股份有限公司 | Charging device, charging control method, and vehicle |
| CN114312390B (en) * | 2020-09-30 | 2024-01-30 | 比亚迪股份有限公司 | Charging device, charging control method and vehicle |
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