CN101882873A - 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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- CN101882873A CN101882873A CN2010101401576A CN201010140157A CN101882873A CN 101882873 A CN101882873 A CN 101882873A CN 2010101401576 A CN2010101401576 A CN 2010101401576A CN 201010140157 A CN201010140157 A CN 201010140157A CN 101882873 A CN101882873 A CN 101882873A
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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 new-energy automobile DC-DC intelligent converter and control method thereof.
Background technology
In electric automobile, need to convert the high voltage of main battery system to the 13.8V low-voltage to the low-pressure system charge in batteries, traditional DC-DC modular converter, mainly by inverter circuit, high frequency transformer, high-frequency rectification circuit and voltage stabilizing circuit are formed, by hardware circuit the process of whole voltage transitions is controlled, convert the direct voltage of input to another kind of direct voltage output, the DC-DC conversion of being made up of hardware circuit has only two kinds of operating states of opening and closing fully, can not regulate the DC-DC conversion, having a lot of times on electric automobile does not need the DC-DC conversion work, thereby increased the loss of power, reliability and useful life that simultaneously long operating state has also reduced the DC-DC transducer.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of new-energy automobile with DC-DC intelligent converter and control method thereof to reach the purpose that the process of DC-DC conversion is carried out 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 the input power supply, inverter circuit, rectifier filter circuit, described input power supply passes through inverter circuit, rectifier filter circuit is connected with the direct current output module, the inverter power tube of described inverter circuit is provided with temperature sensor, described temperature sensor is connected with the ECU controller by sample circuit, described high frequency output filter circuit is connected with the ECU controller by sample circuit, and described ECU controller passes through inverter control circuit, inverse changing driving circuit is connected with inverter circuit;
Described inverter circuit is used for converting high voltage direct current to high-frequency impulse output, through high frequency transformer the input voltage step-down is exported, by the rectifier filter circuit output DC;
Described sample circuit is used to gather the temperature value signal of electric current, voltage and the inverter power tube of rectifier filter circuit output, and the signal that collects is delivered to the ECU controller;
Described ECU controller is used for the temperature value according to electric current, voltage and the inverter power tube of the rectifier filter circuit output of gathering, and judges, according to judgment value inverter control circuit is sent control signal;
Described inverter control circuit is used to receive the control signal of EUC controller, by inverse changing driving circuit inverter circuit is controlled.
Be provided with shunt between the output of described direct current output module input and rectifier filter circuit.
Described direct current output module by accessory power supply respectively with the ECU controller, inverter control circuit, inverse changing driving circuit connects.
A kind of control method of DC-DC intelligent control module, this method may further comprise the steps:
A) setting up procedure is used to start the DC-DC transducer, and the output current and the voltage of DC-DC transducer is limited, and gathers the output current of DC-DC transducer shunt, the temperature value of VD and inverter power tube;
B) electric current comparison step is used for comparing according to the output current of gathering and the output-current rating of setting, carries out the temperature comparison greater than output-current rating and when being no more than maximum current according to comparative result, carries out voltage ratio less than output-current rating;
C) temperature comparison step is used under the situation of output current greater than output-current rating, to temperature detection and comparison, selects to control output current according to the result of temperature comparison, makes temperature keep stable;
D) voltage is selected step, is used for closing the DC-DC transducer, and output voltage and rated voltage being compared under the situation of output current less than output-current rating;
E) voltage negative feedback step, being used for voltage selects step under the situation that input electric power is closed less than rated current and DC-DC converter, output voltage is during less than rated voltage, open the DC-DC transducer and carry out maximum current limliting, output voltage and rated voltage are compared, output voltage is closed the DC-DC controller greater than rated voltage.
The present invention compared with prior art has following advantage: by intelligent control module the process of DC-DC conversion is carried out intelligent monitoring and protection, improved the efficient of DC conversion, strengthened reliability of products.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further details;
Fig. 1 is a principle of the invention block diagram;
Fig. 2 is a control module flow chart of the present invention;
In Fig. 1,1, the input power supply, 2, inverter circuit, 3, the direct current output module, 4, the High frequency filter rectification circuit, 5, sample circuit, 6, inverter control circuit, 7, the 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 supply 1, inverter circuit 2, rectifier filter circuit 4, described input power supply 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, and described ECU controller 7 is by inverter control circuit 6, inverse changing driving circuit 8 is connected with inverter circuit 2;
Described inverter circuit is used for converting the high pressure forthright to high-frequency impulse output, through high frequency transformer the input voltage step-down is exported, by the rectifier filter circuit output DC;
Described sample circuit is used to gather the temperature value of electric current, voltage and the inverter power tube of rectifier filter circuit output, and the signal that collects is delivered to the ECU controller;
Described ECU controller is used for the temperature value according to electric current, voltage and the inverter power tube of the rectifier filter circuit output of gathering, and judges, according to judgment value inverter control circuit is sent control signal;
Described inverter control circuit is used to receive the control signal of EUC controller, by inverse changing driving circuit inverter circuit is controlled.
Be provided with shunt 10 between the output of described direct current output module 3 inputs and 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 kind of control method of DC-DC intelligent control module, this method may further comprise the steps:
A) setting up procedure is used to start the DC-DC transducer, and the output current and the voltage of DC-DC transducer is limited, and gathers the output current of DC-DC transducer shunt, the temperature value of VD and inverter power tube;
B) electric current comparison step is used for comparing according to the output current of gathering and the output-current rating of setting, carries out the temperature comparison greater than output-current rating and when being no more than maximum current according to comparative result, carries out voltage ratio less than output-current rating;
C) temperature comparison step is used under the situation of output current greater than output-current rating, to temperature detection and comparison, selects to control output current according to the result of temperature comparison, makes temperature keep stable;
D) voltage is selected step, is used for closing the DC-DC transducer, and output voltage and rated voltage being compared under the situation of output current less than output-current rating;
E) voltage negative feedback step, being used for voltage selects step under the situation that input electric power is closed less than rated current and DC-DC converter, output voltage is during less than rated voltage, open the DC-DC transducer and carry out maximum current limliting, output voltage and rated voltage are compared, output voltage is closed the DC-DC controller greater than rated voltage.
Flow chart as Fig. 2 control module; Flow process roughly comprises following step;
In step 100, flow process begins;
In step 101, open the DC-DC change-over circuit, flow process enters step 102;
In step 102, measure the temperature of output voltage, electric current and the inverter power tube of the rectifier filter circuit in the DC-DC change-over circuit, flow process enters step 103;
In step 103, whether judge High frequency filter rectification circuit output current less than the minimum working current of setting, judged result is that flow process does not enter step 104; Sentence read result is for being that 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 not for, and flow process enters step 107, and judged result is for being to enter step 106;
In step 106, close the DC-DC transducer;
In step 107, whether judge temperature greater than 100 °, judged result is not for, and flow process enters step 109, and judged result is for being to enter 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 for denying Returning process 102; Judged result is for being to enter step 110;
In step 110, current limliting is returned step 102 to the rated current of setting;
In step 111, judge whether flag==1, judged result enters step 112 for not, and judged result is for being to enter step 114;
In step 112, close the DC-DC transducer, detect output voltage; Enter step 113;
In step 113, whether judge output voltage greater than 13.6V, judged result enters step 114 for not, and judged result is for being to return step 102;
In step 114, open DC-DC, the current limliting maximum, flag-1 enters step 115;
In step 115, measure output voltage, enter step 116;
In step 116, whether judge output voltage greater than 13.8V, judged result is returned step 102 for not, and judged result is for being to return step 117;
In step 117, close the DC-DC transducer, Flag-0 returns step 102.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection range of the present utility model.
Claims (4)
1. new-energy automobile DC-DC intelligent converter, comprise input power supply (1), inverter circuit (2), rectifier filter circuit (4), it is characterized in that: described input power supply (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), and described ECU controller (7) is by inverter control circuit (6), inverse changing driving circuit (8) is connected with inverter circuit (2);
Described inverter circuit is used for converting the high voltage direct current of input power supply input to high-frequency impulse output, through high frequency transformer the input voltage step-down is exported, by the rectifier filter circuit output DC;
Described sample circuit is used to gather the temperature value signal of electric current, voltage and the inverter power tube of rectifier filter circuit output, and the signal that collects is delivered to the ECU controller;
Described ECU controller is used for the temperature value according to electric current, voltage and the inverter power tube of the rectifier filter circuit output of gathering, and judges, according to judgment value inverter control circuit is sent control signal;
Described inverter control circuit is used to receive the control signal of EUC controller, by inverse changing driving circuit inverter circuit is controlled.
2. a kind of new-energy automobile DC-DC intelligent converter according to claim 1 is characterized in that: be provided with shunt (10) between the output of described direct current output module (3) input and rectifier filter circuit (4).
3. a kind of new-energy automobile DC-DC intelligent converter according to claim 1, it is characterized in that: the described direct current output module of right (3) by accessory power supply (9) respectively with ECU controller (7), inverter control circuit (6), inverse changing driving circuit (8) connects.
4. the control method of a DC-DC intelligent converter, this method may further comprise the steps:
A) setting up procedure is used to start the DC-DC transducer, and the output current and the voltage of DC-DC transducer is limited, and gathers the output current of DC-DC transducer shunt, the temperature value of VD and inverter power tube;
B) electric current comparison step is used for comparing according to the output current of gathering and the output-current rating of setting, carries out the temperature comparison greater than output-current rating and when being no more than maximum current according to comparative result, carries out voltage ratio less than output-current rating;
C) temperature comparison step is used under the situation of output current greater than output-current rating, to temperature detection and comparison, selects to control output current according to the result of temperature comparison, makes temperature keep stable;
D) voltage is selected step, is used for closing the DC-DC transducer, and output voltage and rated voltage being compared under the situation of output current less than output-current rating;
E) voltage negative feedback step, being used for voltage selects step under the situation that input electric power is closed less than rated current and DC-DC converter, output voltage is during less than rated voltage, open the DC-DC transducer and carry out maximum current limliting, output voltage and rated voltage are compared, output voltage is closed the DC-DC controller greater than rated voltage.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN101882873A true CN101882873A (en) | 2010-11-10 |
| CN101882873B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721864A (en) * | 2012-05-04 | 2012-10-10 | 北京工业大学 | System and method for time-staggered acquisition of high-frequency electric-arc signal |
| CN107884615A (en) * | 2017-12-13 | 2018-04-06 | 浙江天拓电气有限公司 | A kind of new-energy automobile drive system integrated synthesis tester |
| WO2024164669A1 (en) * | 2023-02-09 | 2024-08-15 | 华为数字能源技术有限公司 | Power tube temperature measurement circuit, inverter, and inverter derating method |
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| 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 |
| 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 |
| WO2008153174A1 (en) * | 2007-06-11 | 2008-12-18 | Toyota Jidosha Kabushiki Kaisha | Electric system control device and control method |
-
2010
- 2010-03-31 CN CN201010140157.6A patent/CN101882873B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| 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 |
| WO2008153174A1 (en) * | 2007-06-11 | 2008-12-18 | Toyota Jidosha Kabushiki Kaisha | Electric system control device and control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721864A (en) * | 2012-05-04 | 2012-10-10 | 北京工业大学 | System and method for time-staggered acquisition of high-frequency electric-arc signal |
| CN107884615A (en) * | 2017-12-13 | 2018-04-06 | 浙江天拓电气有限公司 | A kind of new-energy automobile drive system integrated synthesis tester |
| 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 |
| WO2024164669A1 (en) * | 2023-02-09 | 2024-08-15 | 华为数字能源技术有限公司 | Power tube temperature measurement circuit, inverter, and inverter derating method |
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| CN101882873B (en) | 2015-01-07 |
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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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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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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 | ||
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Granted publication date: 20150107 Termination date: 20210331 |