CN202690498U - Electric automobile electric drive controller fan control circuit - Google Patents
Electric automobile electric drive controller fan control circuit Download PDFInfo
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- CN202690498U CN202690498U CN 201220402652 CN201220402652U CN202690498U CN 202690498 U CN202690498 U CN 202690498U CN 201220402652 CN201220402652 CN 201220402652 CN 201220402652 U CN201220402652 U CN 201220402652U CN 202690498 U CN202690498 U CN 202690498U
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- fan
- temperature
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Abstract
The utility model discloses an electric automobile electric drive controller fan control circuit which is characterized by comprising a temperature detection circuit, a main control chip digital signal processor (DSP) and a fan driving circuit, wherein the temperature detection circuit is provided with a temperature sensor used for detecting work temperature of a driving controller. The main control chip DSP receives temperature detection signals output by the temperature detection circuit and outputs fan driving signals after comparison with the set temperature, and the control end of the fan driving circuit receives the fan driving signals output by the main control chip DSP and conducts fan starting-stopping control correspondingly. The electric automobile electric drive controller fan control circuit increases protection for a fan on one hand, and saves electric quantity on the other hand.
Description
Technical field
The utility model relates to the electric machine controller field, mainly is the fan control circuitry in a kind of electric vehicle motor controller air cooling system, is used for the working state of fan is rationally controlled, to realize the mode of operation of efficient energy-saving.
Background technique
Become at low-carbon economy under the background of the mainstream of the times, electric vehicle becomes the main direction of current development of automobile.Electric drive system is the power producer of electric vehicle, directly affects the performance of car load.Electric machine controller is under the operating modes such as anxious acceleration, anxious deceleration and overload in the electric vehicle, and temperature sharply raises, and controller must have corresponding radiating structure guarantee power device IGBT reliably working.Therefore, for the controller of air-cooled structure, the work of fan is particularly important.Control mode of the prior art is that complete as long as car load powers on, the fan of electric machine controller is just worked always, has so both reduced fan life, also wastes energy simultaneously.
Summary of the invention
The utility model is for avoiding the existing deficiency of above-mentioned prior art, a kind of electric vehicle electricity drive controller fan control circuitry is provided, increase on the one hand the protection to fan, saving on the other hand electric weight.
The utility model is that the technical solution problem adopts following technological scheme:
The structural feature of the utility model electric vehicle electricity drive controller fan control circuitry is to comprise:
One temperature sensing circuit, the set temperature sensor is for detection of the operating temperature of drive controller;
One main control chip DSP accepts the temperature detection signal that described temperature sensing circuit is exported, through relatively exporting the fans drive signal with setting temperature;
One fan drive circuit is accepted the fans drive signal that described main control chip DSP exports, corresponding execution fan on off control with its control end.
The structural feature of the utility model electric vehicle electricity drive controller fan control circuitry also is:
Described temperature sensing circuit selects temperature variation is converted to the temperature transducer of resistance change, described temperature transducer is connected across the two ends of capacitor C 2, consist of resistor voltage divider circuit with resistance R 1 and R2 and form voltage division signal, described voltage division signal is the voltage follower through being made of amplifier U1A in subsequent conditioning circuit, again the differential conversion circuit output 0-3.3V voltage signal through being made of amplifier U1B; The clamped circuit that setting is made of diode D1 is to the clamped backward described main control chip DSP output temperature testing signal of described 0-3.3V voltage signal.
Described main control chip DSP judges by the AD computing for the temperature detection signal of accepting, when temperature detection signal surpasses setting value, by the port output module output low level driving signal ctrl of main control chip DSP.
2 pin that low level driving signal ctrl in the port output module of described fan drive circuit comfortable main control chip DSP in future is linked into isolation optocoupler U2 make isolation optocoupler U2 conducting, 12V voltage makes metal-oxide-semiconductor Q1 open-minded through the grid that resistance R11 is input to MOS driving tube Q1, and FAN+ and FAN-two ends the pin respectively both positive and negative polarity of wind-receiving fan make starting fan.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model middle controller fan is not just to work in the beginning that powers on always, just starts working but reach the certain value aft-fan at the Electric Machine Control actuator temperature; Not only increase the protection to fan, also saved electric energy.
2, temperature sensing circuit is input to temperature detection signal among the main control chip DSP in the utility model, and DSP judges according to the temperature value of setting, and after temperature surpassed setting value, output drive signal devoted oneself to work fan to fan drive circuit; The temperature threshold of the temperature value of closing fan work by setting during a little less than fan work can effectively avoid sampling to disturb, and improves stability and the reliability of control procedure.
Description of drawings
Fig. 1 is the utility model functional-block diagram;
Fig. 2 is temperature sensing circuit schematic diagram in the utility model;
Fig. 3 is the utility model fan driving circuit principle figure.
Embodiment
Referring to Fig. 1, electric vehicle electricity drive controller fan control circuitry comprises in the present embodiment:
One temperature sensing circuit, the set temperature sensor is for detection of the operating temperature of drive controller;
One main control chip DSP accepts the temperature detection signal that described temperature sensing circuit is exported, through relatively exporting the fans drive signal with setting temperature;
One fan drive circuit is accepted the fans drive signal that main control chip DSP exports, corresponding execution fan on off control with its control end.
Referring to Fig. 2, temperature sensing circuit selects temperature variation is converted to the temperature transducer of resistance change in the present embodiment, temperature transducer is connected across the two ends of capacitor C 2, consist of resistor voltage divider circuit with resistance R 1 and R2 and form voltage division signal, voltage division signal is the voltage follower through being made of amplifier U1A in subsequent conditioning circuit, again the differential conversion circuit output 0-3.3V voltage signal through being made of amplifier U1B; The clamped circuit that setting is made of diode D1 is to the clamped backward main control chip DSP output temperature testing signal of 0-3.3V voltage signal; Arrange further stabilization signal, the eliminating of voltage follower disturbed among Fig. 2, and clamped circuit is for the protection of main control chip DSP.
Main control chip DSP accepts temperature detection signal with one road analog-digital conversion a/d, through computing and the judgement of main control chip DSP, when temperature detection signal surpasses setting value, by the port output module output low level driving signal ctrl of main control chip DSP.
Referring to Fig. 3,2 pin that low level driving signal ctrl in the port output module of fan drive circuit comfortable main control chip DSP in future is linked into isolation optocoupler U2 make isolation optocoupler U2 conducting, 12V voltage makes metal-oxide-semiconductor Q1 open-minded through the grid that resistance R11 is input to MOS driving tube Q1, and Fan+ and Fan-two ends the pin respectively both positive and negative polarity of wind-receiving fan make starting fan.
If surpass setting value for the temperature detection signal of drive controller, then main control chip DSP not output low level drive signal ctrl, isolation optocoupler U2 remains cut-off, MOS driving tube Q1 is for turn-offing, fan does not start.
Diode D2 among Fig. 3 is used for preventing the reversal connection of ABAP Adapter, and transient voltage twin zener dioder Z1 is that sustained diode 3 is for the protection of fan electromotor for the protection loop that provides is provided the grid that prevents metal-oxide-semiconductor.
Claims (4)
1. electric vehicle electricity drive controller fan control circuitry is characterized in that comprising:
One temperature sensing circuit, the set temperature sensor is for detection of the operating temperature of drive controller;
One main control chip DSP accepts the temperature detection signal that described temperature sensing circuit is exported, through relatively exporting the fans drive signal with setting temperature;
One fan drive circuit is accepted the fans drive signal that described main control chip DSP exports, corresponding execution fan on off control with its control end.
2. electric vehicle according to claim 1 electricity drive controller fan control circuitry, it is characterized in that described temperature sensing circuit selection is converted to temperature variation the temperature transducer of resistance change, described temperature transducer is connected across the two ends of capacitor C 2, consist of resistor voltage divider circuit with resistance R 1 and R2 and form voltage division signal, described voltage division signal is the voltage follower through being made of amplifier U1A in subsequent conditioning circuit, again the differential conversion circuit output 0-3.3V voltage signal through being made of amplifier U1B; The clamped circuit that setting is made of diode D1 is to the clamped backward described main control chip DSP output temperature testing signal of described 0-3.3V voltage signal.
3. electric vehicle according to claim 2 electricity drive controller fan control circuitry, it is characterized in that described main control chip DSP is for the temperature detection signal of accepting, judge by the AD computing, when temperature detection signal surpasses setting value, by the port output module output low level driving signal ctrl of main control chip DSP.
4. electric vehicle according to claim 3 electricity drive controller fan control circuitry, it is characterized in that described fan drive circuit in the future the low level in the port output module of comfortable main control chip DSP drive 2 pin that signal ctrl is linked into isolation optocoupler U2 and make isolation optocoupler U2 conducting, 12V voltage makes metal-oxide-semiconductor Q1 open-minded through the grid that resistance R11 is input to MOS driving tube Q1, and FAN+ and FAN-two ends the pin respectively both positive and negative polarity of wind-receiving fan make starting fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220402652 CN202690498U (en) | 2012-08-14 | 2012-08-14 | Electric automobile electric drive controller fan control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220402652 CN202690498U (en) | 2012-08-14 | 2012-08-14 | Electric automobile electric drive controller fan control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690498U true CN202690498U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220402652 Expired - Lifetime CN202690498U (en) | 2012-08-14 | 2012-08-14 | Electric automobile electric drive controller fan control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690498U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790847A (en) * | 2013-12-31 | 2014-05-14 | 江苏陆地方舟新能源电动汽车有限公司 | Fan control system and method of electric vehicle |
| CN109883568A (en) * | 2019-02-12 | 2019-06-14 | 辽宁达能电气股份有限公司 | A kind of constant temperature box device based on temperature-measuring system of distributed fibers |
-
2012
- 2012-08-14 CN CN 201220402652 patent/CN202690498U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790847A (en) * | 2013-12-31 | 2014-05-14 | 江苏陆地方舟新能源电动汽车有限公司 | Fan control system and method of electric vehicle |
| CN109883568A (en) * | 2019-02-12 | 2019-06-14 | 辽宁达能电气股份有限公司 | A kind of constant temperature box device based on temperature-measuring system of distributed fibers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province Patentee after: Anhui Juyi Technology Co.,Ltd. Address before: 230051 Anhui Province, Hefei City Industrial Park, Baohe Jianghuai heavy industry base Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |