CN101882873B - DC-DC intelligent control module for new energy automobile and control method thereof - Google Patents
DC-DC intelligent control module for new energy automobile and control method thereof Download PDFInfo
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- CN101882873B CN101882873B CN201010140157.6A CN201010140157A CN101882873B CN 101882873 B CN101882873 B CN 101882873B CN 201010140157 A CN201010140157 A CN 201010140157A CN 101882873 B CN101882873 B CN 101882873B
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Abstract
The invention discloses a DC-DC intelligent control module for a new energy automobile and a control method thereof. An ECU controller judges according to collected current and voltage output by a high-frequency rectifier filter circuit, a temperature value signal of an inverter power tube, and the minimum current, the maximum current, voltage and temperature in the ECU controller, and then gives out a control signal to an inverter control circuit; and the inverter control circuit controls an inverter circuit though an inverter drive circuit to change the output of the inverter circuit and carries out intelligent monitoring and protection on the DC-DC conversion process by the intelligent control module, thus improving the efficiency of DC conversion and enhancing product reliability.
Description
Technical field
The present invention relates to a kind of DC-DC intelligent control module for new energy automobile and control method thereof.
Background technology
Need to convert the high voltage of main battery system to 13.8V low-voltage to low-pressure system charge in batteries in electric automobile, traditional DC-DC modular converter, primarily of inverter circuit, high frequency transformer, high-frequency rectification circuit and voltage stabilizing circuit composition, controlled by the process of hardware circuit to whole voltage transitions, convert the direct voltage of input to another kind of direct voltage output, the DC-DC conversion be made up of hardware circuit completely only has opening and closing two kinds of operating states, can not regulate DC-DC conversion, electric automobile has a lot of time does not need DC-DC conversion work, thus add the loss of power, operating state also reduces reliability and the useful life of DC-DC intelligent control module for a long time simultaneously.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of DC-DC intelligent control module for new energy automobile and control method thereof to reach the object of the process of DC-DC conversion being carried out to intelligent monitoring and protection.
In order to solve the problems of the technologies described above, technical scheme of the present invention is, a kind of DC-DC intelligent control module for new energy automobile, comprise input power, inverter circuit, rectifier filter circuit, described input power passes through inverter circuit, rectifier filter circuit is connected with direct current output module, the inverter power tube of described inverter circuit is provided with temperature sensor, described temperature sensor is connected with ECU controller by sample circuit, described high frequency output filter circuit is connected with ECU controller by sample circuit, described ECU controller passes through inverter control circuit, inverse changing driving circuit is connected with inverter circuit,
Described inverter circuit, exporting for high voltage direct current being converted to high-frequency impulse, through high frequency transformer by input voltage reduced output voltage, exporting direct current by rectifier filter circuit;
Described sample circuit, for gathering the temperature value signal of electric current, voltage and inverter power tube that rectifier filter circuit exports, and delivers to ECU controller by the signal collected;
Described ECU controller, for the temperature value of the electric current according to the rectifier filter circuit output gathered, voltage and inverter power tube, judges, sends control signal according to judgment value to inverter control circuit;
Described inverter control circuit, for receiving the control signal of EUC controller, is controlled inverter circuit by inverse changing driving circuit.
Shunt is provided with between described direct current output module input and the output of rectifier filter circuit.
Described direct current output module by accessory power supply respectively with ECU controller, inverter control circuit, inverse changing driving circuit connect.
A control method for DC-DC intelligent control module for new energy automobile, the method comprises the following steps:
A) setting up procedure, for starting DC-DC intelligent control module, limiting the output current of DC-DC intelligent control module and voltage, gathering the output current of DC-DC intelligent control module shunt, the temperature value of VD and inverter power tube;
B) electric current comparison step, for comparing according to the output-current rating of the output current gathered and setting, carry out temperature when being greater than output-current rating according to comparative result and being no more than maximum current to compare, what be less than output-current rating carries out voltage compare;
C) temperature comparison step, for when output current is greater than output-current rating, to temperature detection with compare, selects to control output current according to the result that temperature compares, makes temperature keep stable;
D) voltage selects step, for when output current is less than output-current rating, closes DC-DC intelligent control module, and output voltage and rated voltage is compared;
E) negative voltage feedback step, to select in step when input electric power is less than rated current and DC-DC intelligent control module is closed for voltage, when output voltage is less than rated voltage, open DC-DC intelligent control module and carry out maximum current limliting, output voltage is compared with rated voltage, output voltage is greater than rated voltage, closes DC-DC intelligent control module.
The present invention compared with prior art has following advantage: carry out intelligent monitoring and protection by intelligent control module to the process that DC-DC changes, and improves the efficiency of DC conversion, enhances the reliability of product.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details;
Fig. 1 is principle of the invention block diagram;
Fig. 2 is control module flow chart of the present invention;
In FIG, 1, input power, 2, inverter circuit, 3, direct current output module, 4, High frequency filter rectification circuit, 5, sample circuit, 6, inverter control circuit, 7, ECU controller, 8, inverse changing driving circuit, 9, accessory power supply, 10, shunt.
Embodiment
As shown in Figure 1, a kind of DC-DC intelligent control module for new energy automobile, comprise input power 1, inverter circuit 2, rectifier filter circuit 4, described input power 1 is by inverter circuit 2, rectifier filter circuit 4 is connected with direct current output module 3, the inverter power tube of described inverter circuit 2 is provided with temperature sensor, described temperature sensor is connected with ECU controller 7 by sample circuit 5, described high frequency output filter circuit 4 is connected with ECU controller 7 by sample circuit 5, described ECU controller 7 is by inverter control circuit 6, inverse changing driving circuit 8 is connected with inverter circuit 2,
Described inverter circuit, exporting for high pressure forthright being converted to high-frequency impulse, through high frequency transformer by input voltage reduced output voltage, exporting direct current by rectifier filter circuit;
Described sample circuit, for gathering the temperature value of electric current, voltage and inverter power tube that rectifier filter circuit exports, and delivers to ECU controller by the signal collected;
Described ECU controller, for the temperature value of the electric current according to the rectifier filter circuit output gathered, voltage and inverter power tube, judges, sends control signal according to judgment value to inverter control circuit;
Described inverter control circuit, for receiving the control signal of EUC controller, is controlled inverter circuit by inverse changing driving circuit.
Shunt 10 is provided with between described direct current output module 3 input and the output of rectifier filter circuit 4.
Described direct current output module 3 by accessory power supply 9 respectively with ECU controller 7, inverter control circuit 6, inverse changing driving circuit 8 connects.
A control method for DC-DC intelligent control module for new energy automobile, the method comprises the following steps:
A) setting up procedure, for starting DC-DC intelligent control module, limiting the output current of DC-DC intelligent control module and voltage, gathering the output current of DC-DC intelligent control module shunt, the temperature value of VD and inverter power tube;
B) electric current comparison step, for comparing according to the output-current rating of the output current gathered and setting, carry out temperature when being greater than output-current rating according to comparative result and being no more than maximum current to compare, what be less than output-current rating carries out voltage compare;
C) temperature comparison step, for when output current is greater than output-current rating, to temperature detection with compare, selects to control output current according to the result that temperature compares, makes temperature keep stable;
D) voltage selects step, for when output current is less than output-current rating, closes DC-DC intelligent control module, and output voltage and rated voltage is compared;
E) negative voltage feedback step, to select in step when input electric power is less than rated current and DC-DC intelligent control module is closed for voltage, when output voltage is less than rated voltage, open DC-DC intelligent control module and carry out maximum current limliting, output voltage is compared with rated voltage, output voltage is greater than rated voltage, closes DC-DC intelligent control module.
As the flow chart of Fig. 2 control module; Flow process roughly comprises following step;
In step 100, flow process starts;
In step 101, open DC-DC change-over circuit, flow process enters step 102;
In step 102, measure the temperature of the output voltage of the rectifier filter circuit in DC-DC change-over circuit, electric current and inverter power tube, flow process enters step 103;
In step 103, judge whether High frequency filter rectification circuit output current is less than the minimum working current of setting, judged result is no, and flow process enters step 104; Sentence read result is yes, and flow process enters step 111;
In step 104, flag=0, enters step 105;
In step 105, judge whether temperature is greater than or equal to 105 °, judged result is no, and flow process enters step 107, and judged result is yes, enters step 106;
In step 106, close DC-DC intelligent control module;
In step 107, judge whether temperature is greater than 100 °, judged result is no, and flow process enters step 109, and judged result is yes, enters step 108;
In step 108, High frequency filter rectification circuit output current reduces 10%; Return step 102;
In step 109, judge whether High frequency filter rectification circuit output current is greater than or equal to the maximum operating currenbt of setting, judged result is no, Returning process 102; Judged result is yes, enters step 110;
In step 110, current limliting, to the rated current of setting, returns step 102;
In step 111, judge whether flag==1, judged result is no, enters step 112, and judged result is yes, enters step 114;
In step 112, close DC-DC intelligent control module, detect output voltage; Enter step 113;
In step 113, judge whether output voltage is greater than 13.6V, judged result is no, enters step 114, and judged result is yes, returns step 102;
In step 114, open DC-DC, current limliting is maximum, and flag-1 enters step 115;
In step 115, measure output voltage, enter step 116;
In step 116, judge whether output voltage is greater than 13.8V, judged result is no, returns step 102, and judged result is yes, returns step 117;
In step 117, close DC-DC intelligent control module, Flag-0, returns step 102.
The temperature value signal of the electric current that ECU controller 7 exports according to the rectifier filter circuit 4 gathered, voltage and inverter power tube, with the minimum current be set in ECU controller 7, maximum current, voltage and temperature judge, send control signal according to judgment value to inverter control circuit 6; Inverter control circuit 6 is controlled by inverse changing driving circuit 8 pairs of inverter circuits 2, changes the output of inverter circuit 2, protects, improve the efficiency of conversion, enhance the reliability of product to DC-DC intelligent control module.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the various improvement that method of the present utility model is conceived and technical scheme is carried out; or directly apply to other occasion, all within protection range of the present utility model without improving.
Claims (1)
1. a DC-DC intelligent control module for new energy automobile, comprise input power (1), inverter circuit (2) and rectifier filter circuit (4), described input power (1) is by inverter circuit (2), rectifier filter circuit (4) is connected with direct current output module (3), the inverter power tube of described inverter circuit (2) is provided with temperature sensor, described temperature sensor is connected with ECU controller (7) by sample circuit (5), described high frequency output filter circuit (4) is connected with ECU controller (7) by sample circuit (5), described ECU controller (7) is by inverter control circuit (6), inverse changing driving circuit (8) is connected with inverter circuit (2), be provided with shunt (10) between the output of direct current output module (3) input and rectifier filter circuit (4), described direct current output module (3) is connected with ECU controller (7), inverter control circuit (6), inverse changing driving circuit (8) respectively by accessory power supply (9),
Described inverter circuit, the high voltage direct current for being inputted by input power converts high-frequency impulse to and exports, and through high frequency transformer by input voltage reduced output voltage, exports direct current by rectifier filter circuit;
Described sample circuit, for gathering the temperature value signal of electric current, voltage and inverter power tube that rectifier filter circuit exports, and delivers to ECU controller by the signal collected;
Described ECU controller, for the temperature value of the electric current according to the rectifier filter circuit output gathered, voltage and inverter power tube, judges, sends control signal according to judgment value to inverter control circuit;
Described inverter control circuit, for receiving the control signal of ECU controller, is controlled inverter circuit by inverse changing driving circuit, comprises following rate-determining steps:
A) setting up procedure, for starting DC-DC intelligent control module, limiting the output current of DC-DC intelligent control module and voltage, gathering the output current of DC-DC intelligent control module shunt, the temperature value of VD and inverter power tube;
B) electric current comparison step, for comparing according to the output-current rating of the output current gathered and setting, carry out temperature when being greater than output-current rating according to comparative result and being no more than maximum current and compare, what be less than output-current rating carries out voltage compare;
C) temperature comparison step, for when output current is greater than output-current rating, to temperature detection with compare, selects to control output current according to the result that temperature compares, makes temperature keep stable;
D) voltage selects step, for when output current is less than output-current rating, closes DC-DC intelligent control module, and output voltage and rated voltage is compared;
E) negative voltage feedback step, to select in step when input electric power is less than rated current and DC-DC intelligent control module is closed for voltage, when output voltage is less than rated voltage, open DC-DC intelligent control module and carry out maximum current limliting, output voltage is compared with rated voltage, output voltage is greater than rated voltage, closes DC-DC intelligent control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010140157.6A CN101882873B (en) | 2010-03-31 | 2010-03-31 | DC-DC intelligent control module for new energy automobile and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010140157.6A CN101882873B (en) | 2010-03-31 | 2010-03-31 | DC-DC intelligent control module for new energy automobile and control method thereof |
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| Publication Number | Publication Date |
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| CN101882873A CN101882873A (en) | 2010-11-10 |
| CN101882873B true CN101882873B (en) | 2015-01-07 |
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| CN201010140157.6A Expired - Fee Related CN101882873B (en) | 2010-03-31 | 2010-03-31 | DC-DC intelligent control module for new energy automobile and control method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721864B (en) * | 2012-05-04 | 2015-01-14 | 北京工业大学 | System and method for time-staggered acquisition of high-frequency electric-arc signal |
| CN107884615B (en) * | 2017-12-13 | 2023-11-14 | 湖南银河电气有限公司 | Integrated comprehensive tester for new energy automobile driving system |
| CN116111821A (en) * | 2023-02-09 | 2023-05-12 | 华为数字能源技术有限公司 | A power tube temperature detection circuit, inverter and inverter derating method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2872731Y (en) * | 2006-02-10 | 2007-02-21 | 重庆长安汽车股份有限公司 | DC converter circuit for mixed-power automobile |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005051930A (en) * | 2003-07-29 | 2005-02-24 | Matsushita Electric Ind Co Ltd | Walkie-talkie |
| JP2007006628A (en) * | 2005-06-24 | 2007-01-11 | Matsushita Electric Works Ltd | Battery charger and electric power tool set therewith |
| JP4906921B2 (en) * | 2007-06-11 | 2012-03-28 | トヨタ自動車株式会社 | Control device and control method for electrical system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2872731Y (en) * | 2006-02-10 | 2007-02-21 | 重庆长安汽车股份有限公司 | DC converter circuit for mixed-power automobile |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2005-51930A 2005.02.24 * |
| JP特开2007-6628A 2007.01.11 * |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Yucheng Inventor after: Cheng Yonghai Inventor after: Wang Yiwen Inventor after: Du Zhongfa Inventor after: Zhu Ping Inventor before: Yang Zhenjun Inventor before: Song Manxing Inventor before: Zhang Tiane |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YANG ZHENJUN SONG MANXING ZHANG TIANE TO: ZHOU YUCHENG CHENG YONGHAI WANG YIWEN DU ZHONGFA ZHU PING |
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| C14 | Grant of patent or utility model | ||
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Fengming Lake Economic and Technological Development Zone of Anhui Province, Wuhu City Road 241009 Patentee after: WUHU MOTIONTEC AUTOMOTIVE CO., LTD. Patentee after: Saic Chery Automobile Co., Ltd. Address before: Fengming Lake Road Economic and Technological Development Zone, Anhui city of Wuhu province No. 98 241009 Patentee before: Chery Automobile Co., Ltd. Patentee before: Saic Chery Automobile Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20210331 |