CN1630174A - DC/DC converter boost and buck main circuit for fuel battery electric sedan - Google Patents
DC/DC converter boost and buck main circuit for fuel battery electric sedan Download PDFInfo
- Publication number
- CN1630174A CN1630174A CNA2004100670512A CN200410067051A CN1630174A CN 1630174 A CN1630174 A CN 1630174A CN A2004100670512 A CNA2004100670512 A CN A2004100670512A CN 200410067051 A CN200410067051 A CN 200410067051A CN 1630174 A CN1630174 A CN 1630174A
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- main circuit
- converter
- fuel battery
- battery electric
- power switching
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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
- Y02T10/72—Electric energy management in electromobility
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Abstract
A boost and step down main circuit of DC/DC converter for electric car using fuel cell, which contains plurality of power switch device (IGBT) composed of low loss high power insulated gate bipolar transistor, diode, capacitor with long service life parallel connected to said main circuit, high frequency and low loss inductor series connected to said main circuit. Said power switch device is parallel connected to main circuit as the main circuit is boost circuit and series connected to main circuit as main circuit is step down circuit.
Description
Technical field
The present invention relates to DC-DC converter, particularly a kind of fuel battery electric sedan DC/DC inverter main circuit.
Background technology
Along with the development of fuel cell technology, fuel cell electric vehicle enters developing stage fast.Because the softer output characteristic of fuel cell can not satisfy the requirement of vehicle mobility, therefore in fuel cell and bus drive, increase the DC/DC converter, improve the output characteristic of fuel cell.The DC/DC converter is one of main parts size of fuel cell electric vehicle.The operation principle block diagram of DC/DC converter in fuel cell electric vehicle as shown in Figure 1, power to motor and driver behind the electric energy process DC/DC converter that fuel cell produces, the direction indication energy Flow direction of arrow, in order to improve the output characteristic of electric automobile instantaneous power, increase boosting battery at the DC/DC converter output terminal.
Fuel battery electric sedan is illustrated in fig. 2 shown below with DC/DC converter principle block diagram, power device, inductor, capacitor constitute the main circuit of DC/DC converter, controlled by single-chip computer control system, output dc voltage boosts or step-down through behind the main circuit.And the controlling schemes of main circuit topological structure and system directly affects technical indicators such as the volume, weight, conversion efficiency of DC/DC converter.
Summary of the invention
The present invention provides a kind of fuel battery electric sedan DC/DC converter boost and buck main circuit for satisfying fuel battery electric sedan with DC/DC converter high power density, high efficiency requirement.
For reaching above-mentioned purpose, the present invention is achieved in that
A kind of fuel battery electric sedan DC/DC converter boost main circuit, comprise one or more capacitors, an inductor, a diode, described capacitor is parallel on the described main circuit, described diode and described inductor are series on the described main circuit, also be connected with a plurality of device for power switching on described main circuit, the collector electrode of described device for power switching, emitter, base stage link to each other with control circuit with the negative pole of the output of described inductor, described main circuit respectively.Described device for power switching can be an igbt.In addition, between the collector electrode of described device for power switching and emitter, also can be provided with RC commutation excess voltage suppressor and be arranged at excess voltage suppressor on the described main circuit.
A kind of fuel battery electric sedan DC/DC converter buck main circuit, comprise one or more capacitors, an inductor, a diode, described capacitor is parallel on the described main circuit, described diode and described inductor are series on the described main circuit, also be connected with a plurality of device for power switching on described main circuit, the collector electrode of described device for power switching, emitter, base stage link to each other with control circuit with the input of the positive pole of described main circuit, described inductor respectively.Described device for power switching can be an igbt.Also can be provided with RC commutation excess voltage suppressor and the excess voltage suppressor that is arranged on the described main circuit between the collector electrode of this external described device for power switching and the emitter.
The invention has the beneficial effects as follows: the energy conversion efficiency height, compare with isolated main circuit topological structure, the non-isolated intermediate link that reduced, the energy conversion efficiency of this DC/DC converter is up to more than 96%.Reduced the manufacturing cost of DC/DC converter, high-power electric and electronic module and inductor are the most important components and parts of inverter main circuit.The permission operating frequency of general high-power electric and electronic module is lower than the efficient operation frequency of pulsating direct current inductor.The present invention cooperates a plurality of high-power electric and electronic modules with an inductor job, has given full play to the performance of each components and parts, has reduced the manufacturing cost of DC/DC converter.Reduce, reduce the weight and volume of DC/DC converter, the weight and volume of DC/DC converter has quite a few from inductor.This achievement can effectively improve the operating frequency of converter, and inductor is worked under the efficient operation frequency, and the required inductance value of DC/DC converter is descended, and has reduced the volume and weight of inductor.Reduced by inductor produce operating noise because the present invention has improved the operating frequency of inductor, this frequency has exceeded the frequency of sound wave that people's ear can be distinguished, has realized the quiet work of DC/DC converter.
Description of drawings
Fig. 1 is the operation principle block diagram of DC/DC converter in fuel cell electric vehicle
Fig. 2 is fuel battery electric sedan DC/DC converter principle block diagram
Fig. 3 is step-up DC/DC converter
Fig. 4 is a voltage-dropping type DC/DC converter
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
As shown in Figure 3, a kind of fuel battery electric sedan DC/DC converter boost main circuit, comprise two dissimilar capacitor C1 and C2, inductor Ls, diode Ds, described capacitor C1 and C2 are parallel on the described main circuit, described diode Ds and described inductor Ls are series on the described main circuit, also be connected with two device for power switching S1 and S2 on described main circuit, the collector electrode of described device for power switching, emitter, base stage link to each other with control circuit with the negative pole of the output of described inductor Ls, described main circuit respectively.Described control circuit is made up of voltage and current detection circuit, controlling unit and drive circuit.Described device for power switching is an igbt.Between the collector electrode of described device for power switching and emitter, also be provided with RC commutation excess voltage suppressor and be arranged at excess voltage suppressor RV on the described main circuit.
As shown in Figure 4, a kind of fuel battery electric sedan DC/DC converter buck main circuit, comprise two dissimilar capacitor C1 and C2, inductor Ls, diode Ds, described capacitor C1 and C2 are parallel on the described main circuit, described diode Ds and described inductor Ls are series on the described main circuit, also be connected with two device for power switching and want S1 and S2 on described main circuit, the collector electrode of described device for power switching, emitter, base stage link to each other with control circuit with the positive pole of described main circuit, the output of inductor Ls respectively.Described control circuit is made up of voltage and current detection circuit, controlling unit and drive circuit.Described device for power switching is an igbt.Between the collector electrode of described device for power switching and emitter, also be provided with RC commutation excess voltage suppressor and be arranged at excess voltage suppressor RV on the described main circuit.
Claims (8)
1, a kind of fuel battery electric sedan DC/DC converter boost main circuit, comprise capacitor, inductor, diode, described capacitor is parallel on the described main circuit, described diode and described inductor are series on the described main circuit, it is characterized in that: also be connected with a plurality of device for power switching on described main circuit, the collector electrode of described device for power switching, emitter, base stage link to each other with control circuit with the negative pole of the output of described inductor, described main circuit respectively.
2, fuel battery electric sedan according to claim 1 DC/DC converter boost main circuit, it is characterized in that: described device for power switching is an igbt.
3, fuel battery electric sedan according to claim 3 is characterized in that with DC/DC converter boost main circuit: also be provided with RC commutation excess voltage suppressor between the collector electrode of described device for power switching and emitter.
4, fuel battery electric sedan according to claim 3 is characterized in that: also be provided with excess voltage suppressor on described main circuit with DC/DC converter boost main circuit.
5, a kind of fuel battery electric sedan DC/DC converter buck main circuit, comprise one or more capacitors, an inductor, diode, described capacitor is parallel on the described main circuit, described diode and described inductor are series on the described main circuit, it is characterized in that: also be connected with a plurality of device for power switching on described main circuit, the collector electrode of described device for power switching, emitter, base stage link to each other with control circuit with the input of the positive pole of described main circuit, described inductor respectively.
6, fuel battery electric sedan according to claim 5 DC/DC converter buck main circuit, it is characterized in that: described device for power switching is an igbt.
7, fuel battery electric sedan according to claim 5 is characterized in that with DC/DC converter boost main circuit: also be provided with RC commutation excess voltage suppressor between the collector electrode of described device for power switching and emitter.
8, fuel battery electric sedan according to claim 5 is characterized in that: also be provided with excess voltage suppressor on described main circuit with DC/DC converter boost main circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100670512A CN1630174A (en) | 2004-10-11 | 2004-10-11 | DC/DC converter boost and buck main circuit for fuel battery electric sedan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100670512A CN1630174A (en) | 2004-10-11 | 2004-10-11 | DC/DC converter boost and buck main circuit for fuel battery electric sedan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1630174A true CN1630174A (en) | 2005-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100670512A Pending CN1630174A (en) | 2004-10-11 | 2004-10-11 | DC/DC converter boost and buck main circuit for fuel battery electric sedan |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345362C (en) * | 2005-07-05 | 2007-10-24 | 北京航空航天大学 | Composite input-output characteristic control circuit in fuel cell DC/DC converter control circuit |
| CN101209680B (en) * | 2006-12-27 | 2011-04-06 | 上海清能燃料电池技术有限公司 | Control device of fuel cell electric vehicle |
| CN102449831A (en) * | 2009-06-03 | 2012-05-09 | 丰田自动车株式会社 | Fuel cell system |
| CN103178741A (en) * | 2013-03-04 | 2013-06-26 | 东南大学 | Interleaved parallel switch full-bridge inverter and interleaved parallel control method |
| CN103973153A (en) * | 2013-02-05 | 2014-08-06 | 新疆大学 | High-power numerical control pulse frequency modulation power supply of electric arc cutting machine tool |
| CN110601534A (en) * | 2019-09-16 | 2019-12-20 | 南京丁博控制器有限公司 | Step-down DC-DC conversion circuit for electric automobile |
| CN112152455A (en) * | 2020-09-28 | 2020-12-29 | 成都芯源系统有限公司 | Control circuit, boost-buck converter thereof and integrated circuit chip |
-
2004
- 2004-10-11 CN CNA2004100670512A patent/CN1630174A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345362C (en) * | 2005-07-05 | 2007-10-24 | 北京航空航天大学 | Composite input-output characteristic control circuit in fuel cell DC/DC converter control circuit |
| CN101209680B (en) * | 2006-12-27 | 2011-04-06 | 上海清能燃料电池技术有限公司 | Control device of fuel cell electric vehicle |
| CN102449831A (en) * | 2009-06-03 | 2012-05-09 | 丰田自动车株式会社 | Fuel cell system |
| CN103973153A (en) * | 2013-02-05 | 2014-08-06 | 新疆大学 | High-power numerical control pulse frequency modulation power supply of electric arc cutting machine tool |
| CN103178741A (en) * | 2013-03-04 | 2013-06-26 | 东南大学 | Interleaved parallel switch full-bridge inverter and interleaved parallel control method |
| CN110601534A (en) * | 2019-09-16 | 2019-12-20 | 南京丁博控制器有限公司 | Step-down DC-DC conversion circuit for electric automobile |
| CN110601534B (en) * | 2019-09-16 | 2020-09-04 | 南京丁博控制器有限公司 | Step-down DC-DC conversion circuit for electric automobile |
| CN112152455A (en) * | 2020-09-28 | 2020-12-29 | 成都芯源系统有限公司 | Control circuit, boost-buck converter thereof and integrated circuit chip |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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