CN103350671A - Switch buffer circuit used for electromobile - Google Patents
Switch buffer circuit used for electromobile Download PDFInfo
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- CN103350671A CN103350671A CN2013103077918A CN201310307791A CN103350671A CN 103350671 A CN103350671 A CN 103350671A CN 2013103077918 A CN2013103077918 A CN 2013103077918A CN 201310307791 A CN201310307791 A CN 201310307791A CN 103350671 A CN103350671 A CN 103350671A
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Abstract
The invention discloses a switch buffer circuit used for an electromobile. The switch buffer circuit used for the electromobile comprises a comparator U1, a first bleeder circuit and a second bleeder circuit, wherein the first bleeder circuit comprises a resistor R13 and a first divider resistor, the resistor R13 and the first divider resistor are connected in series, the second bleeder circuit comprises a resistor R7 and a second divider resistor, the resistor R7 and the second divider resistor are connected in series, the positive input end of the comparator U1 is connected to one end, connected with the second divider resistor, of the resistor R7, the output end of the comparator U1 is connected to the base electrode of an audion Q1, the emitter of the audion Q1 is grounded, the collector of the audion Q1 is connected to one end of a control coil of a relay K2, and the other end of the control circuit of the relay K2 is connected with a power supply. The switch buffer circuit used for the electromobile has the advantages that when a main power supply of the electromobile is powered on, a switch on the main circuit of the electromobile can only be started after currents pass through the buffer circuit, and therefore damage to the main circuit caused by large currents generated when the main power supply is just started is avoided.
Description
Technical field
The present invention relates to a kind of buffer switching circuit, particularly relate to the switch buffer circuit for electronlmobil.
Background technology
Electronlmobil refers to travel with power wheel take vehicle power as power, meets the vehicle of arteries of communication, legislative control on safety requirements.Because less to the relative orthodox car of environmental concerns, its prospect is extensively had an optimistic view of, but current techniques is still immature.Its workflow is as follows: storage battery, and---------electrical motor---power drive system---drives running car to electric governor to electric current.
At present on the electronlmobil a large amount of electrical equipments are housed, high-power electrical equipments such as electric machine controller, Vehicular charger, DC-DC especially, the general inside of these high-power electrical equipments has large bulk capacitance to exist.Therefore electronlmobil may cause because system power is excessive the part electrical equipment to damage when connecting electrokinetic cell.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, the switch buffer circuit that is used for electronlmobil is provided, when starting power supply, over-current phenomenon avoidance easily occurs on the existing electronlmobil of solution, thereby damage the defective of components and parts.
Purpose of the present invention is achieved through the following technical solutions: the switch buffer circuit that is used for electronlmobil, comprise comparator U1, the first bleeder circuit and the second bleeder circuit, described the first bleeder circuit comprises resistance R 13 and first divider resistance of series connection, the second bleeder circuit comprises resistance R 7 and second divider resistance of series connection, the first bleeder circuit and power supply BT1 consist of a loop, resistance R 7 one ends connect the negative pole of power supply BT1, the other end connects the first divider resistance, the second bleeder circuit, power supply BT1 and relay K 1 consist of a loop, resistance R 13 1 ends connect the negative pole of power supply BT1, the other end is connected to the second bleeder circuit, contact one end of relay K 1 connects power supply BT1, the other end connects the second bleeder circuit, be parallel with a capacitor C 1 on the second bleeder circuit, the negative input end of described comparator U1 is connected to an end that connects the first divider resistance on the resistance R 13, the positive input terminal of comparator U1 is connected to an end that connects the second divider resistance on the resistance R 7, the output of comparator U1 is connected to the base stage of aerotron Q1, the grounded emitter of triode Q1, its collecting electrode is connected to an end of the control coil of relay K 2, another termination power of the control coil of relay K 2.
The first bleeder circuit and the second bleeder circuit all are connected on the power supply BT1, relay K 2 is the switch of electronlmobil power circuit, power supply BT1 is the main power source of electronlmobil, during beginning, voltage is arranged on the R13, there is not voltage on the R7, on the negative input end of comparator U1 voltage is arranged, positive input terminal does not have voltage, so comparator U1 is output as low level, aerotron Q1 keeps turn-offing, and relay K 2 is positioned at off state; Behind closing relay K1, power supply BT1 is namely to capacitor C 1 charging, simultaneously, voltage is namely arranged on the R7, when but the upper voltage of R7 did not have greater than the upper voltage of R13, comparator U1 can not overturn, and only had capacitor C 1 to continue charging, when knowing the upper voltage of R7 greater than the upper voltage of R13, comparator U1 upset, it is output as positive level, so that aerotron Q1 opens, the coil of relay K 2 gets electric, thereby so that relay K 2 closures, then namely opened the power circuit of electronlmobil, this has power supply BT1 power supply this power circuit, so this buffer circuit has slowed down the power supply speed of power supply BT1 to power circuit, the over-current phenomenon avoidance when having avoided power supply BT1 just to enable is to the destruction of components and parts on the power circuit.
Further, the resistance value of above-mentioned resistance R 7 is 1.2 times of resistance R 13 resistance values, like this so that C1 when being charged to 80%, the upper voltage of R7 can exceed resistance R 13, has guaranteed that charging duration is neither long nor short, meets the requirements.
Further, positive pole output place of above-mentioned power supply BT1 is provided with a fuse F1, and for whole circuit provides protection, when short circuit phenomenon occurring, fuse F1 is the power supply of auto power off BT1.
Further, positive pole output place of above-mentioned power supply BT1 is provided with an air switch S1, is used for the switch control of whole circuit.
Further, be parallel with a diode D2 on the control coil of above-mentioned relay K 2, the positive pole of diode D2 connects the end that control coil meets triode Q1, and the negative pole of diode D2 connects the end that control coil connects power supply, diode D2 prevents the voltage adverse current, thereby opens relay K 2.And also be parallel with the diode of a same purpose on the control coil of relay K 1.
The invention has the beneficial effects as follows: a kind of buffer circuit is provided, when the main power source of electronlmobil is opened, pass through first buffer circuit, then could open the switch on the electronlmobil power circuit, avoided so the large electric current of the just generation of unlatching of main power source power circuit to be produced the drawback of destroying.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but structure of the present invention is not limited only to following examples:
[embodiment 1]
As shown in Figure 1, the switch buffer circuit that is used for electronlmobil, comprise comparator U1, the first bleeder circuit and the second bleeder circuit, described the first bleeder circuit comprises resistance R 13 and first divider resistance of series connection, the second bleeder circuit comprises resistance R 7 and second divider resistance of series connection, the first bleeder circuit and power supply BT1 consist of a loop, resistance R 7 one ends connect the negative pole of power supply BT1, the other end connects the first divider resistance, the second bleeder circuit, power supply BT1 and relay K 1 consist of a loop, resistance R 13 1 ends connect the negative pole of power supply BT1, the other end is connected to the second bleeder circuit, contact one end of relay K 1 connects power supply BT1, the other end connects the second bleeder circuit, be parallel with a capacitor C 1 on the second bleeder circuit, the negative input end of described comparator U1 is connected to an end that connects the first divider resistance on the resistance R 13, the positive input terminal of comparator U1 is connected to an end that connects the second divider resistance on the resistance R 7, the output of comparator U1 is connected to the base stage of aerotron Q1, the grounded emitter of triode Q1, its collecting electrode is connected to an end of the control coil of relay K 2, another termination power of the control coil of relay K 2.
Among Fig. 1, the first divider resistance is by the resistance R 8 of series connection, R9, R10, R11, R12 consists of, the second divider resistance is by the resistance R 1 of series connection, R2, R3, R4, R5, R6 consists of, the first bleeder circuit and the second bleeder circuit all are connected on the power supply BT1, relay K 2 is the switch of electronlmobil power circuit, power supply BT1 is the main power source of electronlmobil, during beginning, voltage is arranged on the R13, do not have voltage on the R7, on the negative input end of comparator U1 voltage is arranged, positive input terminal does not have voltage, so comparator U1 is output as low level, aerotron Q1 keeps turn-offing, and relay K 2 is positioned at off state; Behind closing relay K1, power supply BT1 is namely to capacitor C 1 charging, simultaneously, voltage is namely arranged on the R7, when but the upper voltage of R7 did not have greater than the upper voltage of R13, comparator U1 can not overturn, and only had capacitor C 1 to continue charging, when knowing the upper voltage of R7 greater than the upper voltage of R13, comparator U1 upset, it is output as positive level, so that aerotron Q1 opens, the coil of relay K 2 gets electric, thereby so that relay K 2 closures, then namely opened the power circuit of electronlmobil, this has power supply BT1 power supply this power circuit, so this buffer circuit has slowed down the power supply speed of power supply BT1 to power circuit, the over-current phenomenon avoidance when having avoided power supply BT1 just to enable is to the destruction of components and parts on the power circuit.
Positive pole output place of the power supply BT1 of the present embodiment is provided with an air switch S1, is used for the switch control of whole circuit.
[embodiment 2]
As shown in Figure 2; the structure of the present embodiment and embodiment 1 are basically identical, and difference is that positive pole output place of power supply BT1 is provided with a fuse F1, for whole circuit provides protection; when short circuit phenomenon occurring, fuse F1 is the power supply of auto power off BT1.
Be parallel with a diode D2 on the control coil of the relay K 2 of the present embodiment, the positive pole of diode D2 connects the end that control coil meets triode Q1, and the negative pole of diode D2 connects the end that control coil connects power supply, and diode D2 prevents the voltage adverse current, thereby open relay K 2.And also be parallel with the diode D1 of a same purpose on the control coil of relay K 1.
The resistance value of resistance R 7 is 1.2 times of resistance R 13 resistance values in the present embodiment, like this so that C1 when being charged to 80%, the upper voltage of R7 can exceed resistance R 13, has guaranteed that charging duration is neither long nor short, meets the requirements.
Claims (5)
1. the switch buffer circuit that is used for electronlmobil, it is characterized in that, comprise comparator U1, the first bleeder circuit and the second bleeder circuit, described the first bleeder circuit comprises resistance R 13 and first divider resistance of series connection, the second bleeder circuit comprises resistance R 7 and second divider resistance of series connection, the first bleeder circuit and power supply BT1 consist of a loop, resistance R 7 one ends connect the negative pole of power supply BT1, the other end connects the first divider resistance, the second bleeder circuit, power supply BT1 and relay K 1 consist of a loop, resistance R 13 1 ends connect the negative pole of power supply BT1, the other end is connected to the second bleeder circuit, contact one end of relay K 1 connects power supply BT1, the other end connects the second bleeder circuit, be parallel with a capacitor C 1 on the second bleeder circuit, the negative input end of described comparator U1 is connected to an end that connects the first divider resistance on the resistance R 13, the positive input terminal of comparator U1 is connected to an end that connects the second divider resistance on the resistance R 7, the output of comparator U1 is connected to the base stage of aerotron Q1, the grounded emitter of triode Q1, its collecting electrode is connected to an end of the control coil of relay K 2, another termination power of the control coil of relay K 2.
2. the switch buffer circuit for electronlmobil according to claim 1 is characterized in that, the resistance value of described resistance R 7 is 1.2 times of resistance R 13 resistance values.
3. the switch buffer circuit for electronlmobil according to claim 1 is characterized in that, positive pole output place of described power supply BT1 is provided with a fuse F1.
4. the switch buffer circuit for electronlmobil according to claim 1 is characterized in that, positive pole output place of described power supply BT1 is provided with an air switch S1.
5. the switch buffer circuit for electronlmobil according to claim 1, it is characterized in that, be parallel with a diode D2 on the control coil of described relay K 2, the positive pole of diode D2 connects the end that control coil meets triode Q1, and the negative pole of diode D2 connects the end that control coil connects power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310307791.8A CN103350671B (en) | 2013-07-22 | 2013-07-22 | For the switch buffer circuit of electronlmobil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310307791.8A CN103350671B (en) | 2013-07-22 | 2013-07-22 | For the switch buffer circuit of electronlmobil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103350671A true CN103350671A (en) | 2013-10-16 |
| CN103350671B CN103350671B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310307791.8A Active CN103350671B (en) | 2013-07-22 | 2013-07-22 | For the switch buffer circuit of electronlmobil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568994A (en) * | 2013-11-15 | 2014-02-12 | 柳州铁道职业技术学院 | Smooth-voltage-stabilization automobile circuit protection device |
| CN103587482A (en) * | 2013-11-15 | 2014-02-19 | 柳州铁道职业技术学院 | Automobile integrated circuit protector capable of stabilizing voltage smoothly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2342794A (en) * | 1998-09-28 | 2000-04-19 | Siemens Ag | Buffer circuit for actuator control |
| EP1696533A1 (en) * | 2005-02-25 | 2006-08-30 | Robert Bosch Gmbh | Electrical power supply with double layer capacitor |
| CN102064810A (en) * | 2010-11-08 | 2011-05-18 | 上海平奉电气技术有限公司 | Electric automobile direct-current high-voltage switch |
| CN203331853U (en) * | 2013-07-22 | 2013-12-11 | 成都联腾动力控制技术有限公司 | Buffer switch circuit of electromobile |
-
2013
- 2013-07-22 CN CN201310307791.8A patent/CN103350671B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2342794A (en) * | 1998-09-28 | 2000-04-19 | Siemens Ag | Buffer circuit for actuator control |
| EP1696533A1 (en) * | 2005-02-25 | 2006-08-30 | Robert Bosch Gmbh | Electrical power supply with double layer capacitor |
| CN102064810A (en) * | 2010-11-08 | 2011-05-18 | 上海平奉电气技术有限公司 | Electric automobile direct-current high-voltage switch |
| CN203331853U (en) * | 2013-07-22 | 2013-12-11 | 成都联腾动力控制技术有限公司 | Buffer switch circuit of electromobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568994A (en) * | 2013-11-15 | 2014-02-12 | 柳州铁道职业技术学院 | Smooth-voltage-stabilization automobile circuit protection device |
| CN103587482A (en) * | 2013-11-15 | 2014-02-19 | 柳州铁道职业技术学院 | Automobile integrated circuit protector capable of stabilizing voltage smoothly |
| CN103568994B (en) * | 2013-11-15 | 2016-05-04 | 柳州铁道职业技术学院 | The circuit protective device that a kind of voltage stabilizing is smooth-going |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103350671B (en) | 2015-08-26 |
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Effective date of registration: 20210927 Address after: 102600 Room 403, unit 1, 15th floor, changfengyuan, Huangcun Town, Daxing District, Beijing Patentee after: Du Lihong Address before: No.01, floor 1-5, building 1, no.3888, Yidu West Road, Longquanyi District, Chengdu, Sichuan 610000 Patentee before: CHENGDU LAINTEM MOTORS CONTROL TECHNOLOGY Co.,Ltd. |
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