CN207535834U - A kind of electric vehicle charging circuit - Google Patents
A kind of electric vehicle charging circuit Download PDFInfo
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- CN207535834U CN207535834U CN201721420250.6U CN201721420250U CN207535834U CN 207535834 U CN207535834 U CN 207535834U CN 201721420250 U CN201721420250 U CN 201721420250U CN 207535834 U CN207535834 U CN 207535834U
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Abstract
The utility model is related to a kind of electric vehicle charging circuits.Including the first AC/DC rectifier bridges, DC/AC converters, high frequency transformer, the 2nd AC/DC rectifier bridges, discharge loop；The input terminal of the first AC/DC rectifier bridges is connected with input power, and output terminal is connected with the input terminal of DC/AC converters；The output terminal of the half-bridge DC/AC converters is connected with the main side of high frequency transformer；The secondary end of the high frequency transformer is connected with the input terminal of the 2nd AC/DC rectifier bridges；The output terminal of the 2nd AC/DC rectifier bridges is connected with the input terminal of discharge loop, and the output terminal of the discharge loop is connected with batteries of electric automobile both ends.The charging circuit is isolated by alternating current with the power-supply system of electric vehicle, while using the method for positive negative pulse stuffing charging, is realized high current pulsed discharge function, achieved the purpose that safely and fast to charge.
Description
Technical field
The utility model is related to charging circuit technical field more particularly to a kind of electric vehicle charging circuits.
Background technology
Electric vehicle charging needs to ensure good security context, since the zero curve occasional of alternating current is connected with the earth, because
This traditional charging modes has security risk, while common charging modes such as modified constant-voltage charge, onstant current voltage limiting to charge, perseverance
Flow constant-voltage charge, pulse current charge, positive negative pulse stuffing charging etc..Since the charging rate of above-mentioned charging modes is slower, Wu Faman
Charging can be completed in the short time for sufficient electric vehicle, the needs being continuing with, and hinders the popularization of electric vehicle to a certain degree and makes
With.
Utility model content
In view of above-mentioned analysis, the utility model is intended to provide a kind of charging circuit of electric vehicle, existing to solve
Electric vehicle charging is too slow or charges the problem of not safe enough.
The purpose of this utility model is mainly achieved through the following technical solutions：
A kind of electric vehicle charging circuit is provided, including the first AC/DC rectifier bridges, DC/AC converters, high frequency transformation
Device, the 2nd AC/DC rectifier bridges, discharge loop；The input terminal of the first AC/DC rectifier bridges is connected with input power, output terminal
It is connected with the input terminal of DC/AC converters；The output terminal of the half-bridge DC/AC converters is connected with the main side of high frequency transformer；
The secondary end of the high frequency transformer is connected with the input terminal of the 2nd AC/DC rectifier bridges；The output terminal of the 2nd AC/DC rectifier bridges
It is connected with the input terminal of discharge loop, the output terminal of the discharge loop is connected with batteries of electric automobile both ends.
On the basis of said program, the present invention has also done following improvement：
Further, the DC/AC converters are isolated converter, including drive control device 1, capacitance C2, C3 and metal-oxide-semiconductor
Q1、Q2；One end of the capacitance C2 is connected with the drain electrode of Q1；The source electrode of Q1 is connected with the anode of the drain electrode of Q2, high frequency transformer；
The source electrode of Q2 is connected with one end of C3；The other end of C3 is connected with the cathode of the other end of C2, high frequency transformer, the metal-oxide-semiconductor
The grid of Q1, Q2 are connected with drive control device 1.
Advantageous effect using above-mentioned further scheme is：
Alternating current with the power-supply system of electric vehicle is isolated, ensures the safety of charging process.
Further, the first AC/DC rectifier bridges are docked two-by-two by four diodes forms full bridge rectifier.
Further, the 2nd AC/DC rectifier bridges are docked two-by-two by four diodes forms full bridge rectifier.
Further, the converter is half-bridge DC/AC converters, specifically includes drive control device 2, metal-oxide-semiconductor Q3, Q4 and electricity
Sense L2, capacitance C4, the C4 one end be connected with the drain electrode of metal-oxide-semiconductor Q3, the source electrode of the metal-oxide-semiconductor Q3 and the drain electrode of metal-oxide-semiconductor Q4,
One end of inductance L2 is connected, and the other end of the inductance L2 is connected with batteries of electric automobile one end, the source electrode of the Q4 and C4's
The other end, batteries of electric automobile the other end be connected, the grid of described metal-oxide-semiconductor Q3, Q4 are connected with drive control device 2.
Advantageous effect using above-mentioned further scheme is：
Control is simple, easy to operate, realizes high current pulsed discharge.
Further, the charging circuit further includes filter circuit；The filter circuit includes an inductance and a capacitance,
One end of the inductance is connected with an output terminal of the 2nd AC/DC rectifier bridges, and the other end is connected with one end of inductance C1, capacitance
The other end of C1 is connected with another output terminal of the first AC/DC rectifier bridges；The input terminal of the inductance C1 and DC/AC converters is simultaneously
Connection.
The utility model has the beneficial effect that：
The charging circuit is isolated by alternating current with the power-supply system of electric vehicle, while using positive negative pulse stuffing charging
Method realizes high current pulsed discharge function, achievees the purpose that safely and fast to charge.
Other feature and advantage of the utility model will illustrate in the following description, also, from froming the perspective of the advantages of part
It becomes apparent in bright book or is understood by implementing the utility model.The purpose of this utility model and other advantages can
It realizes and obtains by specifically noted structure in the specification, claims and attached drawing write.
Description of the drawings
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as the limitation to the utility model, entire
In attached drawing, identical reference mark represents identical component.
Fig. 1 shows a kind of topological schematic diagram of electric vehicle charging circuit.
Fig. 2 shows a kind of electrical block diagrams of electric vehicle charging circuit.
Specific embodiment
The preferred embodiment of the utility model is specifically described below in conjunction with the accompanying drawings, wherein, attached drawing forms the application one
Divide, and be used to illustrate the principle of the utility model together with the embodiment of the utility model.
As shown in Figure 1, a kind of topological structure of electric vehicle charging circuit of the utility model, including mains electricity input end,
One AC/DC rectifier bridges, half-bridge DC/AC converters, high frequency transformer, the 2nd AC/DC rectifier bridges, discharge loop, output terminal.
The circuit structure of the charging circuit is as shown in Fig. 2, the input terminal and input power of the first AC/DC rectifier bridges
It is connected, output terminal is connected with the input terminal of DC/AC converters；The output terminal and high frequency transformer of the half-bridge DC/AC converters
Main side be connected；The secondary end of the high frequency transformer is connected with the input terminal of the 2nd AC/DC rectifier bridges；2nd AC/DC is whole
The output terminal of stream bridge is connected with the input terminal of discharge loop, output terminal and the batteries of electric automobile both ends phase of the discharge loop
Even.
Specifically, one of both described first and second AC/DC rectifier bridges or both can two-by-two be docked by four diodes
Form full bridge rectifier.
The half-bridge DC/AC converters are made of drive control device 1, capacitance C2, C3 and metal-oxide-semiconductor Q1, Q2；The capacitance C2
One end be connected with the drain electrode of Q1；The source electrode of Q1 is connected with the anode of the drain electrode of Q2, high frequency transformer；The source electrode of Q2 and the one of C3
End is connected；The other end of C3 is connected with the cathode of the other end of C2, high frequency transformer, the grid of described metal-oxide-semiconductor Q1, Q2 and driving
Controller 1 is connected.
The converter is isolated converter, can realize electrical isolation, and can realize output voltage by transformer
It adjusts.Achieve the purpose that charging is safer.Common isolated topological structure is such as：Positive activation type, inverse-excitation type, push-pull type, half
Bridge-type, full-bridge type.
The filtering input circuit includes one end and the first AC/DC rectifier bridges of inductance L1 and capacitance C1, the inductance L1
An input terminal be connected, the other end is connected with one end of C1, an input terminal of half-bridge DC/AC converters, and the C1's is another
One end is connected with another input terminal of AC/DC rectifier bridges and another input terminal of half-bridge DC/AC, the output of the half-bridge DC/AC
End is in parallel with the main side of high frequency transformer.
The discharge loop is made of bi-directional half bridge DC/DC converters, and the converter includes drive control device 2, metal-oxide-semiconductor
Q3, Q4 and inductance L2, one end of capacitance C4, the C4 are connected with the drain electrode of metal-oxide-semiconductor Q3, the source electrode and metal-oxide-semiconductor of the metal-oxide-semiconductor Q3
The drain electrode of Q4, one end of inductance L2 are connected, and the other end of the inductance L2 is connected with batteries of electric automobile anode, the source of the Q4
Pole is connected with the other end of C4, the cathode of batteries of electric automobile, and the grid of described metal-oxide-semiconductor Q3, Q4 are connected with drive control device 2.
The method that the discharge loop employs positive negative pulse stuffing charging, can not only be to the charging of battery, and also wanting can be real
Existing high current pulsed discharge function.
The charging circuit further includes filter circuit；The filter circuit includes an inductance and a capacitance, the electricity
One end of sense is connected with an output terminal of the 2nd AC/DC rectifier bridges, and the other end is connected with one end of inductance C1, and capacitance C1's is another
One end is connected with another output terminal of the first AC/DC rectifier bridges；The inductance C1 is in parallel with the input terminal of DC/AC converters.
The operation principle of the discharge loop is：When energy forward flow, Q4 perseverances is enabled to turn off, pass through drive control device 2
Control the turn-on and turn-off of Q3, you can realize transmission of the energy from C1 to battery；When energy back flows, Q3 perseverances is enabled to turn off,
The turn-on and turn-off of Q4 are controlled by drive control device 2, you can realize transmission of the energy from battery to C1.
In the discharge loop, because of the presence of diode D11, input terminal voltage always greater than or equal to output terminal electricity
Pressure.The discharge loop only with an inductance and two switching tubes, can be achieved with flowing of the energy between two power supplys, and
Control is simple, is a very practical bi-directional DC-DC circuit structure.
The electric vehicle charging circuit specific work process is as follows：The AC/DC being made of diode D1, D2, D3, D4
220V electric mains are converted into the DC voltage of pulsation by rectifier bridge；The input filter electricity formed using inductance L1 and capacitance C1
Road is converted into compared with steady dc voltage；The half-bridge DC/AC converters of capacitance C2, C3 and metal-oxide-semiconductor Q1, Q2 composition；Diode D7,
The high-frequency pulse voltage of transformer secondary is transformed into the DC voltage of pulsation by the half-bridge DC/AC rectifier bridges of D8, D9, D10 composition；
Charging to battery can be realized by metal-oxide-semiconductor Q3, Q4 and capacitance C4, inductance L2 the bi-directional half bridge DC/DC converters formed, also can
It realizes pulsed discharge, and the electric energy of releasing is stored in capacitance C4.
In conclusion the utility model embodiment provides a kind of electric vehicle charging circuit, by alternating current and electric vehicle
Power-supply system be isolated, while using positive negative pulse stuffing charging method, realize high current pulsed discharge function, reach safety
The purpose of quick charge.
The preferable specific embodiment of the above, only the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, can be readily occurred in
Change or replacement, should be covered within the scope of the utility model.
Claims (6)
1. a kind of electric vehicle charging circuit, which is characterized in that become including the first AC/DC rectifier bridges, DC/AC converters, high frequency
Depressor, the 2nd AC/DC rectifier bridges, discharge loop；The input terminal of the first AC/DC rectifier bridges is connected with input power, output
End is connected with the input terminal of DC/AC converters；The output terminal of the half-bridge DC/AC converters and the main side phase of high frequency transformer
Even；The secondary end of the high frequency transformer is connected with the input terminal of the 2nd AC/DC rectifier bridges；The 2nd AC/DC rectifier bridges it is defeated
Outlet is connected with the input terminal of discharge loop, and the output terminal of the discharge loop is connected with batteries of electric automobile both ends.
2. charging circuit according to claim 1, which is characterized in that the DC/AC converters are isolated converter, are wrapped
Include drive control device 1, capacitance C2, C3 and metal-oxide-semiconductor Q1, Q2；One end of the capacitance C2 is connected with the drain electrode of Q1；The source electrode of Q1 with
The drain electrode of Q2, the anode of high frequency transformer are connected；The source electrode of Q2 is connected with one end of C3；The other end of C3 and the other end of C2,
The cathode of high frequency transformer is connected, and the grid of described metal-oxide-semiconductor Q1, Q2 are connected with drive control device 1.
3. charging circuit according to claim 2, which is characterized in that the first AC/DC rectifier bridges are by four diodes
Docking composition full bridge rectifier two-by-two.
4. charging circuit according to claim 3, which is characterized in that the 2nd AC/DC rectifier bridges are by four diodes
Docking composition full bridge rectifier two-by-two.
5. charging circuit according to claim 4, which is characterized in that the converter is half-bridge DC/AC converters, specifically
One end including drive control device 2, metal-oxide-semiconductor Q3, Q4 and inductance L2, capacitance C4, the C4 is connected with the drain electrode of metal-oxide-semiconductor Q3, institute
The source electrode for stating metal-oxide-semiconductor Q3 is connected with one end of the drain electrode of metal-oxide-semiconductor Q4, inductance L2, the other end and electric vehicle of the inductance L2
Battery one end is connected, and the source electrode of the Q4 is connected with the other end of the other end of C4, batteries of electric automobile, described metal-oxide-semiconductor Q3, Q4
Grid be connected with drive control device 2.
6. according to the charging circuit described in one of claim 1-5, which is characterized in that further include filter circuit；The filtered electrical
Road includes an inductance and a capacitance, and one end of the inductance is connected with an output terminal of the 2nd AC/DC rectifier bridges, another
End is connected with one end of inductance C1, and the other end of capacitance C1 is connected with another output terminal of the first AC/DC rectifier bridges；The inductance
C1 is in parallel with the input terminal of DC/AC converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420250.6U CN207535834U (en) | 2017-10-30 | 2017-10-30 | A kind of electric vehicle charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420250.6U CN207535834U (en) | 2017-10-30 | 2017-10-30 | A kind of electric vehicle charging circuit |
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| Publication Number | Publication Date |
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| CN207535834U true CN207535834U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721420250.6U Active CN207535834U (en) | 2017-10-30 | 2017-10-30 | A kind of electric vehicle charging circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879905A (en) * | 2018-09-12 | 2018-11-23 | 张家港市泓溢电源科技有限公司 | A kind of automobile charging circuit |
| CN111884519A (en) * | 2020-08-03 | 2020-11-03 | 国网河南省电力公司漯河供电公司 | Method for obtaining constant voltage and constant current power supply |
-
2017
- 2017-10-30 CN CN201721420250.6U patent/CN207535834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879905A (en) * | 2018-09-12 | 2018-11-23 | 张家港市泓溢电源科技有限公司 | A kind of automobile charging circuit |
| CN111884519A (en) * | 2020-08-03 | 2020-11-03 | 国网河南省电力公司漯河供电公司 | Method for obtaining constant voltage and constant current power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181211 Address after: 100070 Beijing Fengtai District South Fourth Ring West Road 188 Sixth District 15 Floor 3 Patentee after: Dingcheng Heng'an Branch of Beijing Fengdong Transmission and Transfer Engineering Co.,Ltd. Address before: 100161 Liuliqiaojia 1, Fengtai District, Beijing Patentee before: BEIJING NORTEL POWER DEBUGGING INSTALLATION SERVICE CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221130 Address after: 101300 Tahe Village, Renhe District, Shunyi District, Beijing Patentee after: Beijing Dingcheng Hongan Technology Development Co.,Ltd. Address before: 100070 Beijing Fengtai District South Fourth Ring West Road 188 Sixth District 15 Floor 3 Patentee before: Dingcheng Heng'an Branch of Beijing Fengdong Transmission and Transfer Engineering Co.,Ltd. |