CN212289535U - Two-way vehicle-mounted charger and electric automobile - Google Patents
Two-way vehicle-mounted charger and electric automobile Download PDFInfo
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- CN212289535U CN212289535U CN202021013165.XU CN202021013165U CN212289535U CN 212289535 U CN212289535 U CN 212289535U CN 202021013165 U CN202021013165 U CN 202021013165U CN 212289535 U CN212289535 U CN 212289535U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The utility model provides a two-way vehicle-mounted charger and electric automobile, this two-way vehicle-mounted charger, include: the power correction PFC unit is connected with the direct current DC conversion unit; and the first connecting end of the switch unit is connected between the power correction PFC unit and the direct current DC conversion unit, and the second connecting end of the switch unit is formed into a connecting end connected to a direct current quick charging interface. Through the scheme, the electric energy discharged by the high-voltage power battery of the discharging vehicle is directly transmitted to the direct-current quick charging interface and then transmitted to the charging vehicle through the direct-current DC conversion unit without passing through the power correction PFC unit, so that the vehicle-to-vehicle charging efficiency of the electric vehicle can be improved to a certain extent.
Description
Technical Field
The utility model relates to an electric automobile technical field, in particular to two-way on-vehicle machine and electric automobile that charge.
Background
At present, the charging modes of electric automobiles on the market are mainly divided into two types: direct current fast charging and alternating current slow charging, which are respectively referred to as fast charging and slow charging.
And (3) quick charging: the high-power direct-current power supply is provided outside the electric automobile and is connected to the high-voltage battery through the quick charging interface and the quick charging control switch to charge the high-voltage battery.
Slow charging: the bidirectional vehicle-mounted charger gets electricity from a power grid through an AC port and charges a high-voltage battery.
In the prior art, the bidirectional vehicle-mounted charger can support bidirectional work (bidirectional flow of energy), and can charge the high-voltage battery through the AC port and discharge the high-voltage battery through the AC port, so that the function of charging the electric vehicle by the electric vehicle can be realized. The bidirectional On-Board Battery Charger (bocc) is composed of a circuit of a Power Factor Correction (PFC) unit and a circuit of a DC conversion unit, so that in a vehicle-to-vehicle charging process of an electric vehicle, energy passes through 4 parts of circuits from a high-voltage Battery of a discharging vehicle to a high-voltage Battery of a charging vehicle, which causes a great reduction in charging efficiency, taking a 6.6kW Charger On the market at present as an example, the PFC unit adopts a hard switching technology, the efficiency is usually low, which is about 96%, and the DC conversion unit adopts a resonant soft switching technology, which can reach over 98% of efficiency, so that the full Power charging efficiency of the bocc is about 94% On average, and the actual vehicle-to-vehicle charging efficiency is only 94% and 88%.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a two-way vehicle carries machine and electric automobile that charges for among the solution prior art, electric automobile's car is to the problem that car charge efficiency is low.
In order to solve the technical problem, an embodiment of the present invention provides the following technical solution:
the utility model discloses one of them embodiment provides a two-way on-vehicle machine that charges, include:
the power correction PFC unit is connected with the direct current DC conversion unit;
and the first connecting end of the switch unit is connected between the power correction PFC unit and the direct current DC conversion unit, and the second connecting end of the switch unit is formed into a connecting end connected to a direct current quick charging interface.
Optionally, the power correction PFC unit comprises a first positive line terminal and a first negative line terminal;
the DC conversion unit comprises a second positive line end and a second negative line end, the second positive line end is connected with the first positive line end, and the second negative line end is connected with the first negative line end;
the first connection end of the switch unit comprises a first end connected with the first positive line end and a second end connected with the first negative line end, and the second connection end comprises a third end connected with the positive electrode of the direct current quick-charging interface and a fourth end connected with the negative electrode of the direct current quick-charging interface.
Optionally, the bidirectional vehicle-mounted charger further includes a capacitor connected between the first positive line end and the first negative line end.
Optionally, the bidirectional vehicle-mounted charger further includes:
and the controller is connected with the switch unit.
Optionally, the power correction PFC unit further includes a connection terminal connected to the AC alternating current port, and the DC conversion unit further includes a connection terminal connected to the high voltage power battery.
The embodiment of the utility model provides an electric automobile is still provided, including foretell two-way on-vehicle machine that charges.
Optionally, the electric vehicle further includes an AC/AC port, a DC fast charging interface, and a high voltage power battery, wherein the power correction PFC unit is connected to the AC/AC port, the DC conversion unit is connected to the high voltage power battery, and a second connection terminal of the switching unit is connected to the DC fast charging interface.
The utility model has the advantages that:
the utility model discloses in the scheme, two-way on-vehicle machine that charges, include: the power correction PFC unit is connected with the direct current DC conversion unit; and the first connecting end of the switch unit is connected between the power correction PFC unit and the direct current DC conversion unit, and the second connecting end of the switch unit is formed into a connecting end connected to a direct current quick charging interface. The switch unit is arranged between the power correction PFC unit and the direct current DC conversion unit, and the electric energy emitted by a high-voltage power battery of a discharged vehicle is directly transmitted to a direct current quick charging interface and then transmitted to a charging vehicle through the direct current DC conversion unit without passing through the power correction PFC unit.
Drawings
Fig. 1 shows a schematic structural diagram of a bidirectional vehicle-mounted charger according to an embodiment of the present invention;
fig. 2 shows the energy flow direction schematic diagram of the embodiment of the present invention, which realizes the charging from vehicle to vehicle through the bidirectional vehicle-mounted charger.
Description of reference numerals:
1-bidirectional vehicle-mounted charger; 2-a direct current DC conversion unit; 3-a power correction PFC unit; a 4-AC port; 5-high voltage power battery; 6-a switching unit; 7-direct current quick charging interface; 8-discharge vehicle; 9-charging the vehicle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses problem to electric automobile's car inefficiency of charging efficiency to the car provides a two-way on-vehicle machine and electric automobile that charge.
The following detailed description of the structure of the bidirectional vehicle charger is provided in the following embodiments.
The embodiment of the utility model provides a two-way vehicle-mounted charger, as shown in fig. 1, include:
the power correction PFC device comprises a power correction PFC unit 3 and a direct current DC conversion unit 2, wherein the power correction PFC unit 2 is connected with the direct current DC conversion unit 3;
and a first connecting end of the switch unit 6 is connected between the power correction PFC unit 3 and the direct current DC conversion unit 2, and a second connecting end is formed to be connected to a connecting end of a direct current quick charging interface.
It should be noted that, as shown in the schematic structural diagram of the bidirectional vehicle-mounted charger shown in fig. 1, the power correction PFC unit 3 includes a first triode Q1, a second triode Q2, a third triode Q3, and a fourth triode Q4, the first triode Q1 is connected in series with the third triode Q3, the second triode Q2 is connected in series with the fourth triode Q4, and the two series lines are connected in parallel and then connected in series with the first inductor L1. The DC-DC conversion unit 2 includes a transformer, one end of which is connected to a first capacitor Cr1, a second inductor Lr1, and 4 transistors: a fifth triode Q5, a sixth triode Q6, a seventh triode Q7, an eighth triode Q8, a fifth triode Q5 and a sixth triode Q6 are connected in series, a seventh triode Q7 and an eighth triode Q8 are connected in series, the two series circuits are connected in parallel and then connected in series with a first capacitor Cr1 and a second inductor Lr1, and the other end of the transformer is connected with a second capacitor Cr2 and 4 triodes: the high-voltage power supply comprises a ninth triode Q9, a thirteenth polar tube Q10, an eleventh triode Q11, a twelfth polar tube Q12, a ninth triode Q9 and a thirteenth polar tube Q10 which are connected in series, an eleventh triode Q11 and a twelfth polar tube Q12 which are connected in series, and the two series circuits are connected in parallel and then connected in series with a second capacitor Cr 2.
The power correction PFC unit 3 is connected with the direct current DC conversion unit 2, the switch unit 6 is connected between the power correction PFC unit 3 and the direct current DC conversion unit 2, the switch unit 6 comprises two connecting ends, the first connecting end is connected between the power correction PFC unit 3 and the direct current DC conversion unit 2, and the second connecting end is connected with a direct current quick charging interface.
The power correction PFC unit 3 comprises a first positive line end and a first negative line end;
the DC conversion unit 2 comprises a second positive line end and a second negative line end, the second positive line end is connected with the first positive line end, and the second negative line end is connected with the first negative line end;
the first connection end of the switch unit 6 comprises a first end connected with the first positive line end and a second end connected with the first negative line end, and the second connection end comprises a third end connected with the positive electrode of the direct current quick-charging interface 7 and a fourth end connected with the negative electrode of the direct current quick-charging interface 7.
It should be noted that the power correction PFC unit 3 and the DC conversion unit 2 both include positive and negative ends, and the power correction PFC unit 3 and the DC conversion unit 2 are connected through the positive and negative ends, that is, a first positive line end of the power correction PFC unit 3 is connected to a second positive line end of the DC conversion unit 2, and a first negative line end of the power correction PFC unit 3 is connected to a second negative line end of the DC conversion unit 2. The switch unit 6 also includes two connection ends, each connection end includes a positive end and a negative end, the first connection end of the switch unit 6 includes a first end and a second end, the first end is connected with the first positive line end, the second end is connected with the first negative line end, the second connection of the switch unit 6 includes a third end and a fourth end, the third end is connected with the positive electrode of the dc fast charging interface 7, and the fourth end is connected with the negative electrode of the dc fast charging interface 7.
The bidirectional vehicle-mounted charger 1 further comprises a capacitor C1 connected between the first positive line end and the first negative line end.
It should be noted that the bidirectional vehicle-mounted charger 1 further includes a capacitor C1, and the capacitor C1 is connected between the power correction PFC unit 3 and the DC conversion unit 2.
The bidirectional vehicle-mounted charger 1 further comprises:
and the controller is connected with the switch unit 6.
It should be noted that the switch unit 6 is connected to a controller, through which the electric energy discharged from the high-voltage power battery 5 of the discharging vehicle can be controlled, and after passing through the DC/DC conversion unit 2, whether the electric energy is transmitted to the charging vehicle through the power correction PFC unit 3 or not is determined, and in a slow charging scenario, the electric energy discharged from the high-voltage power battery 5 of the discharging vehicle is transmitted to the charging vehicle through the AC/AC port 4 through the power correction PFC unit 3 and through the DC/DC conversion unit 2. In a fast charging scene, electric energy discharged by a high-voltage power battery 5 of a discharging vehicle is directly transmitted to the direct-current fast charging interface 7 and then transmitted to a charging vehicle through the direct-current DC conversion unit 2 without passing through the power correction PFC unit 3.
The embodiment of the utility model provides an electric automobile is still provided, including foretell two-way on-vehicle machine that charges.
The electric automobile further comprises an AC (alternating current) port 4, a DC fast charging interface 7 and a high-voltage power battery 5, wherein the power correction PFC unit 3 is connected with the AC port 2, the DC conversion unit 2 is connected with the high-voltage power battery 7, and a second connecting end of the switch unit 6 is connected with the DC fast charging interface 7.
It should be noted that the embodiment of the utility model provides an electric automobile is still provided, including foretell two-way on-vehicle machine of charging 1, still include AC exchange port 4, direct current fill interface 7 and high-pressure power battery 5 soon, two-way on-vehicle machine of charging's power correction PFC unit 3 with AC exchange port 3 is connected, two-way on-vehicle machine of charging 1 DC transform unit 2 with high-pressure power battery 5 passes through the high voltage direct current port and connects, two-way on-vehicle machine of charging 1 the switch unit 6 with the direct current fills interface 7 soon and connects.
The embodiment of the utility model provides an in, the adaptation is as above-mentioned two-way vehicle-mounted machine 1's electric automobile, when carrying out the car to the car charge, its energy flow direction is as shown in fig. 2, the controller of the switch unit 6 of closed two-way vehicle-mounted machine 1 that charges, the electric energy that the high voltage power battery 5 of vehicle 8 discharges, through direct current DC converting unit 2, not pass through power correction PFC unit 3, directly charge interface 7 by the direct current soon and transmit for charging vehicle 9, because direct current DC converting unit 2 adopts be the soft switching technique of resonance, the transmission efficiency of energy is higher than the transmission efficiency of power correction PFC unit 3's energy, consequently, the electric energy that vehicle 8 that discharges does not pass through power correction PFC unit 3, directly transmits for charging vehicle 9, can improve the car to the charging efficiency of car to a certain extent.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (7)
1. The utility model provides a two-way on-vehicle machine that charges which characterized in that includes:
the power correction PFC unit is connected with the direct current DC conversion unit;
and the first connecting end of the switch unit is connected between the power correction PFC unit and the direct current DC conversion unit, and the second connecting end of the switch unit is formed into a connecting end connected to a direct current quick charging interface.
2. The bidirectional vehicle-mounted charger according to claim 1, wherein the power correction PFC unit includes a first positive line terminal and a first negative line terminal;
the DC conversion unit comprises a second positive line end and a second negative line end, the second positive line end is connected with the first positive line end, and the second negative line end is connected with the first negative line end;
the first connection end of the switch unit comprises a first end connected with the first positive line end and a second end connected with the first negative line end, and the second connection end comprises a third end connected with the positive electrode of the direct current quick-charging interface and a fourth end connected with the negative electrode of the direct current quick-charging interface.
3. The bidirectional vehicle-mounted charger according to claim 2, further comprising a capacitor connected between the first positive line end and the first negative line end.
4. The bidirectional vehicle-mounted charger according to any one of claims 1 to 3, characterized in that the bidirectional vehicle-mounted charger further comprises:
and the controller is connected with the switch unit.
5. The bidirectional vehicle-mounted charger according to claim 1, wherein the power correction PFC unit further comprises a connection terminal connected to an AC port, and the DC conversion unit further comprises a connection terminal connected to a high voltage power battery.
6. An electric vehicle, characterized in that it comprises a bidirectional vehicle charger according to any one of claims 1 to 5.
7. The electric vehicle according to claim 6, further comprising an AC port, a DC fast charging interface and a high voltage power battery, wherein the power correction PFC unit is connected to the AC port, the DC conversion unit is connected to the high voltage power battery, and the second connection terminal of the switch unit is connected to the DC fast charging interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021013165.XU CN212289535U (en) | 2020-06-05 | 2020-06-05 | Two-way vehicle-mounted charger and electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021013165.XU CN212289535U (en) | 2020-06-05 | 2020-06-05 | Two-way vehicle-mounted charger and electric automobile |
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| CN212289535U true CN212289535U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202022103449U1 (en) | 2022-06-21 | 2022-06-28 | Madhu Gopahanal Manjunath | Portable EV to EV charger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202022103449U1 (en) | 2022-06-21 | 2022-06-28 | Madhu Gopahanal Manjunath | Portable EV to EV charger |
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