CN201708575U - Charger for electric automobile - Google Patents
Charger for electric automobile Download PDFInfo
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- CN201708575U CN201708575U CN2010201749109U CN201020174910U CN201708575U CN 201708575 U CN201708575 U CN 201708575U CN 2010201749109 U CN2010201749109 U CN 2010201749109U CN 201020174910 U CN201020174910 U CN 201020174910U CN 201708575 U CN201708575 U CN 201708575U
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Abstract
The utility model discloses a charger for an electric automobile. The charger comprises at least two AC-DC link circuits; each AC-DC link circuit comprises an input rectification circuit, a power factor correcting circuit, an IGBT bridge-type inverter circuit, a high-frequency isolation transformer and an output rectification circuit which are sequentially connected; and the output rectification circuits of the AC-DC link circuits are connected in series for outputting. The utility model has better current equalization effect.
Description
Technical field
The utility model relates to a kind of charger of electric automobile, especially relates to a kind of electric car charger of a plurality of AC-DC link series connection.
Background technology
Exhaustion day by day along with traditional energy, become the main flow of automobile industry development day by day with the development and application of the new-energy automobile headed by the electric energy, but the development of electric automobile still is subjected to all multifactor restrictions at present, technological layer at charger just faces a lot of problems, at first, the silicon controlled rectifier battery charger volume is big, big to electric network pollution; Secondly, traditional AC-DC link charger adopts single AC-DC module or multimode parallel connection, and its current sharing is not good, perhaps in order to obtain current-sharing effect preferably, need to adopt complicated sharing control system, and this mode also is not easy to production, installation and the debugging of equipment.
Summary of the invention
The purpose of this utility model is: a kind of electric car charger that possesses preferable current sharing is provided.
The purpose of this utility model is achieved in that
A kind of electric car charger, comprise the AC-DC link, this AC-DC link comprises input rectification circuit, circuit of power factor correction, IGBT bridge inverter main circuit, high-frequency isolation transformer and the output rectification circuit that is linked in sequence, described electric car charger comprises at least two described AC-DC links, the output rectification circuit series connection output of these at least two AC-DC links.
The input rectification circuit of these many AC-DC links, circuit of power factor correction, IGBT bridge inverter main circuit, the high-frequency isolation transformer electrical network that inserts in parallel, the output current that the outputs in parallel of many AC-DC links may cause or the phenomenon of spread of voltage can be effectively avoided in series connection output after the output rectification circuit rectification, this mode.
As the improvement of technique scheme, further technical scheme of the present utility model is as follows:
The output of above-mentioned AC-DC link also is connected with output filter circuit.
Can all connect an output filter circuit at the output of each bar AC-DC link, and then the output of output filter circuit is connected; Also can earlier the output of output rectification circuit be connected the output filter circuit of connecting again.
Three altogether of above-mentioned AC-DC links.
Article three, the series connection of AC-DC link can obtain constant current preferably and constant voltage effect.
Above-mentioned AC-DC link is connected with control system, this control system comprises main control unit, IGBT drive circuit and MCU control unit, this main control unit is connected to described AC-DC link, this MCU control unit is connected to described main control unit and IGBT drive circuit, this IGBT drive circuit is connected to described AC-DC link, described main control unit is gathered the operational data of this AC-DC link, and be sent to described MCU control unit, to the IGBT drive circuit, this IGBT drive circuit is controlled the operating state of this AC-DC link to this MCU control unit according to the control command that receives according to the operational data sending controling instruction that receives.
Above-mentioned main control unit further comprises: input protection circuit; protective circuit; pwm control circuit; closed loop regulation circuit; output sampling amplifying circuit; and output protection circuit; connect output sampling amplifying circuit between described output filter circuit and the IGBT bridge inverter main circuit in turn; closed loop regulation circuit; pwm control circuit and IGBT drive circuit; form the controlling of sampling loop; described MCU control unit receives the sampled data of described output sampling amplifying circuit; and send instructions to closed loop regulation circuit, via closed loop regulation circuit; pwm control circuit and IGBT drive circuit are controlled described IGBT bridge inverter main circuit.
The working method in controlling of sampling loop is: output sampling amplifying circuit is gathered the voltage of output voltage values and current value and storage battery, and the data of gathering are sent to MCU control unit and closed loop regulation circuit simultaneously, simultaneously, the MCU control unit is sent to closed loop regulation circuit with output voltage values and the current value of setting, closed loop regulation circuit is compared the output voltage values and the current value of reality with output voltage values and the current value set, make fine setting and output signal to pwm control circuit according to comparison result, pwm control circuit carries out pulse-width modulation according to the signal that receives, form square wave train, and be transferred to the IGBT drive circuit, by IGBT drive circuit control IGBT bridge inverter main circuit.
Above-mentioned closed loop regulation circuit is the PID regulating circuit.
Each above-mentioned IGBT bridge inverter main circuit all is connected with an IGBT protective circuit, and the input of described AC-DC link is parallel with auxiliary power circuit, and civil power is connected to described protective circuit via this auxiliary power circuit and input protection circuit; The output of described AC-DC link is connected to described protective circuit through output protection circuit; Described IGBT bridge inverter main circuit is connected to described protective circuit through the IGBT protective circuit, and the output of this protective circuit is connected to described MCU control unit.
More than be control system part of the present utility model,, in time adjust the running parameter of AC-DC link by the MCU control unit by the curtage parameter of real-time collection input and output; realize better constant current; the constant voltage effect simultaneously, plays the effect of protective circuit and automobile storage battery.
Description of drawings
Fig. 1 is an AC-DC link schematic diagram of the present utility model;
Fig. 2 is the AC-DC link serial connection schematic diagram of a specific embodiment of the utility model;
Fig. 3 is a control system schematic diagram of the present utility model;
Fig. 4 is an anti-reverse and anti-return system schematic of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
As shown in Figure 1, the AC-DC link of present embodiment comprises input rectification circuit, circuit of power factor correction, IGBT bridge inverter main circuit, high-frequency isolation transformer and the output rectification circuit that is linked in sequence.
As shown in Figure 2, present embodiment is by the output series connection output of the output filter circuit of three AC-DC links, and the output of AC-DC link 1 also is connected with output filter circuit.
Adopt the mode of many AC-DC links series connection output, can effectively avoid the output current that the outputs in parallel of many AC-DC links may cause or the phenomenon of spread of voltage.
Article three, the 1 series connection output of AC-DC link can obtain constant current preferably and constant voltage effect.
As shown in Figure 3, the control system of present embodiment comprises main control unit 2, IGBT drive circuit and MCU control unit, main control unit 2 is connected to AC-DC link 1, the MCU control unit is connected to main control unit 2 and IGBT drive circuit, the IGBT drive circuit is connected to AC-DC link 1, the operational data that main control unit 2 is gathered this AC-DC link 1, and be sent to the MCU control unit, to the IGBT drive circuit, this IGBT drive circuit is controlled the operating state of this AC-DC link 1 to this MCU control unit according to the control command that receives according to the operational data sending controling instruction that receives.
Become direct current behind electric main process input rectification circuit and the circuit of power factor correction, through becoming high-frequency ac behind the IGBT bridge inverter main circuit, become direct current through high-frequency isolation transformer and output rectification circuit then again.The IGBT drive circuit is connected to the IGBT bridge inverter main circuit, and controls the inversion parameter of this IGBT bridge inverter main circuit.
The main control unit of present embodiment further comprises: input protection circuit; protective circuit; pwm control circuit; the PID regulating circuit; output sampling amplifying circuit; and output protection circuit; connect output sampling amplifying circuit between output filter circuit and the IGBT bridge inverter main circuit in turn; the PID regulating circuit; pwm control circuit and IGBT drive circuit; form the controlling of sampling loop; the MCU control unit receives the sampled data of output sampling amplifying circuit; and send instructions to the PID regulating circuit, via the PID regulating circuit; pwm control circuit and IGBT drive circuit are controlled described IGBT bridge inverter main circuit.
This mode has realized the sampling of output circuit, and makes analysis according to sampled data, and the output parameter of control AC-DC link, has realized the real-time control of AC-DC link output state.
The output of the IGBT bridge inverter main circuit of present embodiment is connected with the IGBT protective circuit, and the input of AC-DC link is parallel with auxiliary power circuit, and civil power is connected to described protective circuit via this auxiliary power circuit and input protection circuit; The output of AC-DC link is connected to described protective circuit through output protection circuit; The IGBT bridge inverter main circuit is connected to described protective circuit through the IGBT protective circuit, and the output of this protective circuit is connected to described MCU control unit.
Protective circuit one has three tunnel inputs:
The first via is imported through auxiliary power circuit and input protection circuit from electric main;
The second the road imports through output protection circuit from the output of AC-DC link;
Third Road is imported through the IGBT protective circuit from the IGBT bridge inverter main circuit.
The output of protective circuit is connected to the MCU control unit, and like this, the MCU control unit just can be monitored input circuit, and the state of output circuit and IGBT bridge inverter main circuit is realized the real-time guard to circuit.
The output of the AC-DC link of present embodiment connects a diode D and a controllable switch S, and the positive pole of this diode D is connected to the positive pole of output filter circuit output, and this controllable switch S is controlled by control system.
Because the electric current irreversible property of diode can effectively prevent current reflux, the while gate-controlled switch can be controlled under the correct situation of battery polar just closed, thereby prevents danger.
The output of the AC-DC link of present embodiment is connected to the MCU control unit by an output voltage detecting circuit, the output of this MCU control unit is connected to described gate-controlled switch by a switch on and off control circuit, this MCU control unit receives the detected output voltage signal of described output voltage detecting circuit, and issuing instructions to described switch on and off control circuit according to this voltage signal, this switch on and off control circuit is according to the switching of the described gate-controlled switch of commands for controlling that receives.
Output voltage detecting circuit detects the polarity of the storage battery that connects, simultaneously data are sent to the MCU control unit, under the correct situation of MCU control unit judgement accumulator polarity, just issue instructions to gate-controlled switch, with the gate-controlled switch closure, otherwise gate-controlled switch is in off-state always, can't finish charging process.
The MCU control unit of present embodiment also is connected with and is provided with and display circuit, this setting and display circuit and the two-way communication of described MCU control unit, this setting and display circuit receive user instruction, and being sent to the MCU control unit, this MCU control unit is controlled the operating state of AC-DC link by the user instruction that receives.
The input that circuit is connected to the MCU control unit is set, is used to receive user instruction, display circuit is connected to the output of MCU control unit, is used for output system information.
The MCU control unit of present embodiment is provided with the CAN-BUS bus interface.
The CAN-BUS bus interface be used for on-line communication and with the communicating by letter of superior system, constitute a topological network that constitutes by Multistage Control terminal and charging device terminal.
Of particular note: be a kind of execution mode that provides in conjunction with particular content as mentioned above, can not assert that concrete enforcement of the present utility model is confined to these explanations.All approximate, identical with the utility model structure, device etc., or, all should be considered as protection range of the present utility model for making some technology deduction or replace under the utility model design prerequisite.
Claims (7)
1. electric car charger, comprise the AC-DC link, this AC-DC link comprises input rectification circuit, circuit of power factor correction, IGBT bridge inverter main circuit, high-frequency isolation transformer and the output rectification circuit that is linked in sequence, it is characterized in that: described electric car charger comprises at least two described AC-DC links, the output rectification circuit series connection output of these at least two AC-DC links.
2. a kind of electric car charger according to claim 1 is characterized in that: the output of described AC-DC link also is connected with output filter circuit.
3. a kind of electric car charger according to claim 1 is characterized in that: three altogether of described AC-DC links.
4. a kind of electric car charger according to claim 1, it is characterized in that: described AC-DC link is connected with control system, this control system comprises main control unit, IGBT drive circuit and MCU control unit, this main control unit is connected to described AC-DC link, this MCU control unit is connected to described main control unit and IGBT drive circuit, this IGBT drive circuit is connected to described AC-DC link, described main control unit is gathered the operational data of this AC-DC link, and be sent to described MCU control unit, to the IGBT drive circuit, this IGBT drive circuit is controlled the operating state of this AC-DC link to this MCU control unit according to the control command that receives according to the operational data sending controling instruction that receives.
5. a kind of electric car charger according to claim 4; it is characterized in that: described main control unit further comprises: input protection circuit; protective circuit; pwm control circuit; closed loop regulation circuit; output sampling amplifying circuit; and output protection circuit; connect output sampling amplifying circuit between described output filter circuit and the IGBT bridge inverter main circuit in turn; closed loop regulation circuit; pwm control circuit and IGBT drive circuit; form the controlling of sampling loop; described MCU control unit receives the sampled data of described output sampling amplifying circuit; and send instructions to closed loop regulation circuit, via closed loop regulation circuit; pwm control circuit and IGBT drive circuit are controlled described IGBT bridge inverter main circuit.
6. a kind of electric car charger according to claim 5 is characterized in that: described closed loop regulation circuit is the PID regulating circuit.
7. a kind of electric car charger according to claim 3, it is characterized in that: described each IGBT bridge inverter main circuit all is connected with an IGBT protective circuit, the input of described AC-DC link is parallel with auxiliary power circuit, and civil power is connected to described protective circuit via this auxiliary power circuit and input protection circuit; The output of described AC-DC link is connected to described protective circuit through output protection circuit; Described IGBT bridge inverter main circuit is connected to described protective circuit through the IGBT protective circuit, and the output of this protective circuit is connected to described MCU control unit.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201749109U CN201708575U (en) | 2010-04-29 | 2010-04-29 | Charger for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201749109U CN201708575U (en) | 2010-04-29 | 2010-04-29 | Charger for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708575U true CN201708575U (en) | 2011-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201749109U Expired - Lifetime CN201708575U (en) | 2010-04-29 | 2010-04-29 | Charger for electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708575U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832830A (en) * | 2012-08-28 | 2012-12-19 | 华南理工大学 | DSP (digital signal processor)-based direct-current charging power source system for electric vehicle |
| CN103187896A (en) * | 2011-12-31 | 2013-07-03 | 北京友信宏科电子科技有限公司 | Cascading middle-high voltage electric car converter topology and control method of same |
| CN103944198A (en) * | 2013-01-17 | 2014-07-23 | 西门子公司 | Charging and driving system of electric vehicle and charging device |
-
2010
- 2010-04-29 CN CN2010201749109U patent/CN201708575U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187896A (en) * | 2011-12-31 | 2013-07-03 | 北京友信宏科电子科技有限公司 | Cascading middle-high voltage electric car converter topology and control method of same |
| CN102832830A (en) * | 2012-08-28 | 2012-12-19 | 华南理工大学 | DSP (digital signal processor)-based direct-current charging power source system for electric vehicle |
| CN103944198A (en) * | 2013-01-17 | 2014-07-23 | 西门子公司 | Charging and driving system of electric vehicle and charging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |