CN2507689Y - Voltage changer for fuel battery of electric car - Google Patents
Voltage changer for fuel battery of electric car Download PDFInfo
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- CN2507689Y CN2507689Y CN 01266077 CN01266077U CN2507689Y CN 2507689 Y CN2507689 Y CN 2507689Y CN 01266077 CN01266077 CN 01266077 CN 01266077 U CN01266077 U CN 01266077U CN 2507689 Y CN2507689 Y CN 2507689Y
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Abstract
Disclosed is a voltage transformation device applied in the fuel group battery of an electric vehicle, which comprises a DC/DC module or plural DC/DC modules and a current-equalizing control module, voltages exported by the DC/DC modules are connected in parallel and then connected with the voltage regulating ports of the current-equalizing control module, current detection signals exported by the DC/DC modules are connected with the current signal acquisition ports of the current-equalizing control module, and current-equalizing control signals exported by the current-equalizing control module are connected with the current-equalizing control signal input ports of the DC/DC modules. The utility model can boost the power source exported by the fuel group battery which is low in voltage, large in voltage variation range and above 160KW in power to a stable power source which is sufficiently high in voltage amplitude and good in voltage stability, and thereby the utility model can satisfy the requirements of the driving system and the control system of the electric vehicle about voltage amplitude and stability.
Description
Technical field
The utility model relates to the voltage changer that is used for the electric automobile fuel battery group.
Background technology
Fuel cell and correlation technique research have become the heat subject that each industrial country has the energy field up-to-date technology of great strategic importance.Fuel cell electric vehicle and correlation technique are classified as the great technical task of first developing by each industrial country and international style auto conglomerate.In the great special project of country's 863 electronlmobils, classify fuel cell electric vehicle and correlation technique as the tackling problems in key technologies problem.Fuel cell converting means (hereinafter to be referred as DC/DC) is the corresponding technology of fuel cell electric vehicle, has been listed in the tackling problems in key technologies problem of the great special project of electronlmobil.
The basic function of DC/DC is regulation of line voltage up to fuel cell out-put supply one times, lower, to be risen to the sufficiently high stabilized power source of voltage amplitude, to satisfy the requirement to power line voltage amplitude and degree of stability of Drive for EV and control system.And must have controller characteristic curve with the output characteristic of fuel cell matched well.
But have not yet to see the report of the fuel cell DC/DC that meets the great specific technique requirement of these national 863 electronlmobils.
The utility model content
Task of the present utility model provides a kind of electric power conversion apparatus that is used for the electric automobile fuel battery group.It can be with lower, that regulation of line voltage is big, power greatly to the fuel cell output power supply more than the 160KW, rise to the enough high and high stable power power supply of voltage stability of voltage magnitude, to adapt to the requirement of Drive for EV and control system to voltage magnitude and degree of stability.
Task of the present utility model is achieved through the following technical solutions:
A kind of voltage changer that is used for the electric automobile fuel battery group, it comprises a DC/DC module or a plurality of DC/DC module and a current sharing control module, connect the voltage adjustment end of current sharing control module after the voltage parallel connection of each DC/DC module output, the current detection signal of each DC/DC module output connects the current signal collection terminal of current sharing control module, and the sharing control signal of current sharing control module output connects the sharing control signal input part of each DC/DC module.
The DC/DC module is made up of major loop, control chip, input voltage detection, zero current detection, peak current detection, output voltage detection, switching valve drive signal, output current signal, sharing control signal each several part, and wherein: major loop is a booster circuit; The input of input voltage detection, zero current detection, peak current detection, output voltage test section all connects major loop, and output all connects control chip; The input of switching valve drive signal connects control chip, and output connects major loop; The input of output current signal part connects major loop; The output of sharing control signal section connects the input of output voltage test section.
The model of described control chip is MC3x262; Described major loop be by filter capacitor, be serially connected with in the power supply output loop inductance and rectifier diode, be connected on the booster circuit that the switching valve between inducer rear end and power supply ground constitutes; Described input voltage test section is made of two resistance and an electric capacity, is connected between power positive end and the ground after the series connection of two resistance, and its series connection point connects 3 ends of control chip, and electric capacity is connected between 3 ends and ground of control chip; Described zero current detection part is made of inductance, diode, resistance and the electric capacity with the inductive coupling of major loop, power connection ground after this inductance and diode, resistance, electric capacity are connected successively, the series connection point of resistance and electric capacity connects 8 ends of control chip, the input end of the end in addition of inductance and the negative electrode power connection chip of diode, the output of power supply chip connects 4,2 ends of control chip; Described peak current detection part is connected with potential device by the current transformer that is connected on inductance rear end in the major loop and is constituted, and the output of current transformer connects 5 ends of control chip after potential device is regulated; 1 end of the adjusting termination control chip of potential device is formed by the resistance and the potential device that connect major loop output in described output voltage test section; Described switching valve drive signal offers control end of switching tube by 7 ends of control chip; Described output current signal part is made of the current transformer that is connected on major loop output; Described sharing control signal section is made of optical coupler, and its output connects 1,4 ends of control chip.
Described current sharing control module is made of the control chip UC3902 that quantity equates with the DC/DC module, and wherein: the current signal of each control chip is gathered the output current signal end of the corresponding DC/DC module of termination; The sharing control signal of each control chip connects the sharing control end of corresponding DC/DC module; The voltage adjustment end of each control chip and connect after connect the voltage output end of each DC/DC module.
The utility model has adopted the some DC/DC modules that are made of novel boost control circuit, can constitute low power DC/DC device by a DC/DC module, or to form input voltage by several DC/DC modules and a current-sharing module be 50V-400V, and the fuel cell electric vehicle that output rating can reach above multiple rated voltage of 160KW and rating horsepower is with high power D C/DC device.
Because major loop of the present utility model adopts later-model boost translation circuit, this circuit is compared with the full-bridge circuit of common employing, not only have characteristic of simple structure, and have the outstanding advantage of the degree of freedom big (the voltage transformation amplitude of same device can be set arbitrarily) of conversion efficiency height (conduction loss reduces more than a times), voltage lifting amplitude in 2.4-7 times of scope.
Because control system of the present utility model has adopted MC3x262 High Performance novel PC F integrated manipulator, form circuit with Zero Current Switch function by this controller, not only reduced system loss significantly, improved efficient, and reduced the technical requirements of device internal power binistor, can adopt the lower low speed devices of price, be assembled into the superpower DC/DC of higher frequency, also reduced the switching noise and the complete machine electromagnetism of system power device significantly and scratched degree of disturbing, raising car load electromagnetism has been scratched degree of disturbing performance have vital function.
The special construction of the utility model device has been realized the super wide input and output voltage scope that adopts other same device not possess.The input voltage of each module can change in the 50V-400V super wide range, and output voltage can be set arbitrarily in the super wide range of 120V-460V.
The utility model device has adopted modular construction and flow equalizing circuit, can independently become a miniwatt DC/DC device by a DC/DC module, also can form greatly DC/DC device, with the electronlmobil that satisfies the different capacity grade power requirement to the DC/DC device by several DC/DC modules to the multiple rating horsepower more than the 160KW.
Description of drawings
Fig. 1 is the miniwatt DC/DC device electrical schematic diagram that is made of single DC/DC module;
Fig. 2 is a DC/DC modular construction block diagram of the present utility model;
Fig. 3 is a DC/DC module electrical schematic diagram of the present utility model;
Fig. 4 is the high power D C/DC device electrical schematic diagram that a plurality of DC/DC module of the present utility model is formed;
The high power D C/DC device electrical schematic diagram that Fig. 5 is made up of a plurality of DC/DC modules;
Fig. 6 is a current sharing control module electrical schematic diagram of the present utility model.
The specific embodiment
The utility model is a kind of electric power conversion apparatus that is used for the electric automobile fuel battery group, can constitute miniwatt voltage converting means below the 30KW by a DC/DC module, also can be by several DC/DC modules in parallel and current sharing control module constitute greatly to the large power supply converting means more than the 160KW.
With reference to Fig. 1, diagram is the small-power power converting means that is made of a DC/DC module.The unstable power supply of fuel cell output by the input of 201,202 terminals, after the DC/DC conversion, is outputed to the power input of electronlmobil by 203,204 terminals.
With reference to Fig. 2, the DC/DC module is made up of major loop, control chip, input voltage detection, zero current detection, peak current detection, output voltage detection, switching valve drive signal, output current signal, sharing control signal each several part.Wherein: major loop is a booster circuit; The input of input voltage detection, zero current detection, peak current detection, output voltage test section all connects major loop, and output all connects control chip; The input of switching valve drive signal connects control chip, and output connects major loop; The input of output current signal part connects major loop; The output of sharing control signal section connects the input of output voltage test section.
With reference to Fig. 3.DC/DC module boosting inverter major loop is by filter capacitor C201 and C202, is serially connected with boost inductance L201, rectifier diode D202 in the power supply output loop, is connected on the booster circuit that the switch transistor T 201 between inducer L201 rear end and power supply ground constitutes.The step-up ratio of the DC/DC changer of being made up of this circuit can be greatly to 7 times of input voltages, and have extremely low conduction loss.
U201 (MC3x262) is the controller of DC/DC changer.
The input voltage test section is made of resistance R 201, R204 and capacitor C 203, is connected between power positive end and the ground after resistance R 201 and the R204 series connection, and its series connection point connects 3 ends of control chip U201, and capacitor C 203 is connected between 3 ends and ground of control chip U201.
The zero current detection part is made of inductance, diode D201, resistance R 203 and the capacitor C 204 that the inductance L 201 with major loop is coupled, power connection ground after this inductance and diode D201, resistance R 203, capacitor C 204 are connected successively, the series connection point of resistance and electric capacity connects 8 ends of control chip U201, the input end of the end in addition of inductance and the negative electrode power connection chip POWER of diode D201, the output of power supply chip POWER connects 4,2 ends of control chip U201.
The peak current detection part is connected with potential device W202 by the current transformer LEM201 that is connected on inductance rear end in the major loop and is constituted, and the output of current transformer connects 5 ends of control chip U201 after potential device is regulated.
1 end of the adjusting termination control chip U201 of potential device is formed by the resistance R 206 and the potential device W201 that connect major loop output in the output voltage test section.
The switching valve drive signal is offered the control end of switch transistor T 201 by 7 ends of control chip U201.
The output current signal part is made of the current sensor LEM202 that is connected on major loop output.
The sharing control signal section is made of optical coupler U202, and its output connects 1,4 ends of control chip.
The power circuit of being made up of L201, D201, POWER, C205 is to being that the control core circuit provides the control power supply with control chip U201.The non-constant width of the input voltage range of POWER is used in any voltage section of 50V-500V, and the output voltage of POWER is with the size variation of electric current in the inductance L 201.
The principle of work of this DC/DC module is: the power input voltage signal is imported from control chip U201-3 through the coupled circuit that R201, R204, C203 form; Zero current signal is imported from control chip U201-8 through the coupled circuit that L201, R203, C204 form; Output voltage signal is imported from control chip U201-1 through the voltage detecting circuit that R206, W201 form; Peak current is imported from control chip U201-5 by the testing circuit that current transformer LEM201, W202 form; LEM202 provides the output current signal of this DC/DC module for current-sharing module; U202 accepts the sharing control signal of current-sharing module.After above-mentioned each incoming signal is input to U201, produces control signal and export from U201-7, master cock pipe T201 realizes boost in voltage conversion control.
The zero current detection circuit being set, realizing Zero Current Switch, is one of distinguishing feature of this DC/DC changer.Zero Current Switch can reduce switching loss and electromagnetic distrubance significantly.
With reference to Fig. 4, diagram is that (DC/DC-1～DC/DC-5) in parallel and current sharing control module JMK2 constitutes big to the high power D C/DC changer more than the 160KW by several DC/DC modules.The power input of each DC/DC module (INPUT+/-) is received power converting system power input 101 and 102 after parallel connection, each mouth (OUT+/-) through and connect after receive the mouth 103 and 104 of electric power conversion apparatus.
Each DC/DC module has independently voltage hoisting power control and characteristic coupling controllable function.The effect of current sharing control module is when a plurality of modules are in parallel, make the DC/DC converting means when any power of output, each DC/DC module can both realize power balance output, prevents when hanging down horsepower output indivedual DC/DC modules outputs power bigger than other DC/DC modules.
The control end of DC/CD-1～DC/DC-5 module is connected respectively to 3x1,3x2,3x3, the 3x4 of current sharing control module JMK2 through 208,207,205,206 terminals, and 309,310 terminals of current sharing control module JMK2 are connected to DC/DC converting means mouth 204,203.
Current sharing control module JMK2 imports the output current signal of each module in parallel from 3x3, bus voltage from 309,310 input DC/DC changer outputs, after module J MK2 handles, from 3x1,3x2 output control signal, control the horsepower output of each DC/DC module, on average share DC/DC device output gross horsepower to realize each DC/DC module.
The input end of the high power D C/DC device that Fig. 5 also is made up of a plurality of DC/DC modules, but the power input of its each DC/DC module (INPUT+/-) is connected with separate each fuel cell out-put supply.
With reference to Fig. 6, and the control chip UC3902 that current sharing control module is equated with the DC/DC module by quantity (U301～U305) constitute, wherein: the current signal collection terminal 3 of each control chip U30x connects the output current signal end of corresponding DC/DC module; The voltage adjustment end 6 of each control chip and 7 and connect after connect the voltage output end of each DC/DC module; The sharing control signal end 1 and 2 of each control chip U30x connects the sharing control end of corresponding DC/DC module.
Its principle of work is: the output current signal of each DC/DC module is imported from 3x3,3x1 is coupled to U30x-3 through resistance R, the bus out voltage of each DC/DC module is input to U30x-6 and U30x-7 from 309,310, and the sharing control signal that each control chip U30x sends outputs to each DC/DC module through 3x1,3x2.
Claims (4)
1. voltage changer that is used for the electric automobile fuel battery group is characterized in that:
It comprises the DC/DC module, and this module is made up of major loop, control chip, input voltage detection, zero current detection, peak current detection, output voltage detection, switching valve drive signal, output current signal, sharing control signal each several part, wherein:
Major loop is a booster circuit;
The input of input voltage detection, zero current detection, peak current detection, output voltage test section all connects major loop, and output all connects control chip;
The input of switching valve drive signal connects control chip, and output connects major loop;
The input of output current signal part connects major loop;
The output of sharing control signal section connects the input of output voltage test section.
2. the voltage changer that is used for the electric automobile fuel battery group as claimed in claim 1 is characterized in that:
It comprises a plurality of DC/DC modules and a current sharing control module, connect the voltage adjustment end of current sharing control module after the voltage parallel connection of each DC/DC module output, the current detection signal of each DC/DC module output connects the current signal collection terminal of current sharing control module, and the sharing control signal of current sharing control module output connects the sharing control signal input part of each DC/DC module.
3. the voltage changer that is used for the electric automobile fuel battery group as claimed in claim 1 or 2 is characterized in that:
The model of described control chip is MC3x262;
Described major loop be by filter capacitor, be serially connected with in the power supply output loop inductance and rectifier diode, be connected on the booster circuit that the switching valve between inducer rear end and power supply ground constitutes;
Described input voltage test section is made of two resistance and an electric capacity, is connected between power positive end and the ground after the series connection of two resistance, and its series connection point connects 3 ends of control chip, and electric capacity is connected between 3 ends and ground of control chip;
Described zero current detection part is made of inductance, diode, resistance and the electric capacity with the inductive coupling of major loop, power connection ground after this inductance and diode, resistance, electric capacity are connected successively, the series connection point of resistance and electric capacity connects 8 ends of control chip, the input end of the end in addition of inductance and the negative electrode power connection chip of diode, the output of power supply chip connects 4,2 ends of control chip;
Described peak current detection part is connected with potential device by the current transformer that is connected on inductance rear end in the major loop and is constituted, and the output of current transformer connects 5 ends of control chip after potential device is regulated;
1 end of the adjusting termination control chip of potential device is formed by the resistance and the potential device that connect major loop output in described output voltage test section;
Described switching valve drive signal offers control end of switching tube by 7 ends of control chip;
Described output current signal part is made of the current transformer that is connected on major loop output;
Described sharing control signal section is made of optical coupler, and its output connects 1,4 ends of control chip.
4. the voltage changer that is used for the electric automobile fuel battery group as claimed in claim 2 is characterized in that:
Described current sharing control module is made of the control chip UC3902 that quantity equates with the DC/DC module, wherein:
The current signal of each control chip is gathered the output current signal end of the corresponding DC/DC module of termination;
The sharing control signal of each control chip connects the sharing control end of corresponding DC/DC module;
The voltage adjustment end of each control chip and connect after connect the voltage output end of each DC/DC module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266077 CN2507689Y (en) | 2001-11-15 | 2001-11-15 | Voltage changer for fuel battery of electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266077 CN2507689Y (en) | 2001-11-15 | 2001-11-15 | Voltage changer for fuel battery of electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2507689Y true CN2507689Y (en) | 2002-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266077 Expired - Fee Related CN2507689Y (en) | 2001-11-15 | 2001-11-15 | Voltage changer for fuel battery of electric car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2507689Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577020A (en) * | 2009-07-31 | 2012-07-11 | 热之王公司 | Bi-directional battery voltage converter |
| CN105259886A (en) * | 2015-11-20 | 2016-01-20 | 重庆恒宇华顿新能源开发有限公司 | Voltage boosting control device for tank leakage real-time monitoring |
| CN105278434A (en) * | 2015-11-20 | 2016-01-27 | 重庆恒宇华顿新能源开发有限公司 | Methanol gasoline tank for monitoring hazardous gas concentration |
| CN105278512A (en) * | 2015-11-20 | 2016-01-27 | 重庆恒宇华顿新能源开发有限公司 | Intelligent control working platform preventing leakage of methanol gasoline tanks |
| CN105302102A (en) * | 2015-11-20 | 2016-02-03 | 重庆恒宇华顿新能源开发有限公司 | Control circuit of leakage prevention of tank body |
| CN105329834A (en) * | 2015-11-20 | 2016-02-17 | 重庆恒宇华顿新能源开发有限公司 | Intelligent sensor for stable boost and tank control |
| CN105467891A (en) * | 2015-11-20 | 2016-04-06 | 重庆恒宇华顿新能源开发有限公司 | Diffusion silicon pressure transducer controlled by distributed platform |
-
2001
- 2001-11-15 CN CN 01266077 patent/CN2507689Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577020A (en) * | 2009-07-31 | 2012-07-11 | 热之王公司 | Bi-directional battery voltage converter |
| US9102241B2 (en) | 2009-07-31 | 2015-08-11 | Thermo King Corporation | Bi-directional battery voltage converter |
| CN102577020B (en) * | 2009-07-31 | 2016-01-20 | 热之王公司 | bi-directional battery voltage converter |
| US9694697B2 (en) | 2009-07-31 | 2017-07-04 | Thermo King Corporation | Bi-directional battery voltage converter |
| CN105259886A (en) * | 2015-11-20 | 2016-01-20 | 重庆恒宇华顿新能源开发有限公司 | Voltage boosting control device for tank leakage real-time monitoring |
| CN105278434A (en) * | 2015-11-20 | 2016-01-27 | 重庆恒宇华顿新能源开发有限公司 | Methanol gasoline tank for monitoring hazardous gas concentration |
| CN105278512A (en) * | 2015-11-20 | 2016-01-27 | 重庆恒宇华顿新能源开发有限公司 | Intelligent control working platform preventing leakage of methanol gasoline tanks |
| CN105302102A (en) * | 2015-11-20 | 2016-02-03 | 重庆恒宇华顿新能源开发有限公司 | Control circuit of leakage prevention of tank body |
| CN105329834A (en) * | 2015-11-20 | 2016-02-17 | 重庆恒宇华顿新能源开发有限公司 | Intelligent sensor for stable boost and tank control |
| CN105467891A (en) * | 2015-11-20 | 2016-04-06 | 重庆恒宇华顿新能源开发有限公司 | Diffusion silicon pressure transducer controlled by distributed platform |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |