CN205791581U - A kind of car electric air conditioner driver of precharge - Google Patents
A kind of car electric air conditioner driver of precharge Download PDFInfo
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- CN205791581U CN205791581U CN201620295872.XU CN201620295872U CN205791581U CN 205791581 U CN205791581 U CN 205791581U CN 201620295872 U CN201620295872 U CN 201620295872U CN 205791581 U CN205791581 U CN 205791581U
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- mosfet
- mosfet pipe
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- charge circuit
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Abstract
This utility model relates to the car electric air conditioner driver of a kind of precharge; including pre-charge circuit; described pre-charge circuit connects input; described pre-charge circuit is also respectively connected with MOSFET power circuit, current foldback circuit and low limit mosfet driver; described low limit mosfet driver connects controller; described controller also detects the voltage of described pre-charge circuit, the MOSFET of the big electric current of this utility model advantage first wants cheap compared with relay, particularly automotive grade；It two is the pre-charge circuit of Same Efficieney, and MOSFET volume is less；Its three MOSFET life-span is longer, and on-off times is unrestricted；Both reduced system cost, and reduced again volume, also improve reliability simultaneously, there is preferable application prospect.
Description
Technical field
The present invention relates to the car electric air conditioner driver of a kind of precharge, belong to vehicle electric control field.
Background technology
Along with the development of New Energy Industry, electric automobile is more and more universal.And electric automobile is not owing to having
Traditional fuel engines, therefore its compressor of air conditioner drives by motor, drives compression with brshless DC motor at present
Machine is the most popular.Owing to general electric air-conditioning compressor drive power is all more than one kilowatt, therefore system is to compressor
Need when driver powers on to configure pre-charge module.Currently the majority application scenarios, this pre-charge module is all external；Reason is
This module is bigger, integrated after make driver volume become big, client is difficult to accept.The most currently also having trend is that car load factory wants
Air-conditioning producer is asked to be integrated into internal drive.
Pre-charge module be integrated into inside benefit obvious, air-conditioning driver can with the rising situation of monitoring voltage,
After having arrived switching point voltage, driver can be cut into normal mode of operation, for comparing more external pre-charge module, base voluntarily
Originally need not demarcate.
Traditional built-in pre-charge circuit is as shown in Figure 1.Powered on moment, due to PTC(or a power resistor) deposit
, the voltage of electrolysis CE1 and CE2 can't just set up the magnitude of voltage reaching DC+ at once, but raises at leisure, waits until
After single-chip microcomputer electrification reset, its ADC starts to gather the magnitude of voltage of BusVoltage, has once reached predetermined value, and single-chip microcomputer will
The Relay signal of one high level of output；This signal can drive NPN audion Q1, thus open relay R elay1 and make
2 feet of relay and 5 foot UNICOMs, PTC1 is bypassed, hence into normal mode of operation.
By above description it is known that traditional pre-charge circuit contains a relay, this relay is relatively costly
And volume is relatively big, it is difficult to after collocation power resistor or PTC be put into inside integration compressor drive.Therefore this circuit current
It is set to main beyond or.The present invention is aiming at this difficult problem, introduces a novel circuit configuration, can solve relay size
Excessive problem.
Summary of the invention
The technical problem to be solved in the present invention is: for overcoming the problems referred to above, it is provided that the precharge that a kind of overall volume is less
Car electric air conditioner driver.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of car electric air conditioner driver of precharge, including pre-charge circuit, described pre-charge circuit connects input,
Described pre-charge circuit is also respectively connected with MOSFET power circuit, current foldback circuit and low limit mosfet driver, described low
Limit mosfet driver connects controller, and described controller also detects the voltage of described pre-charge circuit.
Preferably, described pre-charge circuit includes two electrochemical capacitors in parallel, and one of said two electrochemical capacitor also
Connection point connects input, and another one parallel connection point, by power resistor ground connection, described power resistor is parallel with a MOSFET pipe,
Described low limit mosfet driver drives a described MOSFET pipe switch.
Preferably, described current foldback circuit includes comparator.
Preferably, the rated voltage of described electrochemical capacitor is 450V.
Preferably, described MOSFET power circuit includes MOSFET pipe Q2, MOSFET pipe Q3, MOSFET pipe Q4, MOSFET
Pipe Q5, MOSFET pipe Q6 and MOSFET pipe Q7, the side of described MOSFET pipe Q5, MOSFET pipe Q6 and MOSFET pipe Q7 is also divided
Lian Jie there be resistance R4, resistance R5 and resistance R6.
Preferably, the resistance of described power resistor is 500 ohm.
The invention has the beneficial effects as follows: the MOSFET of the big electric current of the advantage first of the present invention wants cheap compared with relay, special
It is not automotive grade；It two is the pre-charge circuit of Same Efficieney, and MOSFET volume is less；Its three MOSFET life-span is longer, opens
Pass number of times is unrestricted；Both reduced system cost, and reduced again volume, also improve reliability simultaneously, preferably should have
Use prospect.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the circuit diagram of an embodiment in prior art；
Fig. 2 is the structural representation of one embodiment of the invention；
Fig. 3 is the circuit diagram of one embodiment of the invention.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only with
The basic structure of the illustration explanation present invention, therefore it only shows the composition relevant with the present invention.
Embodiment 1
The car electric air conditioner driver of of the present invention a kind of precharge as shown in Figure 2, including pre-charge circuit, institute
Stating pre-charge circuit and connect input, described pre-charge circuit is also respectively connected with MOSFET power circuit, current foldback circuit and low
Limit mosfet driver, described low limit mosfet driver connects controller, and described controller also detects described pre-charge circuit
Voltage, when the magnitude of voltage of described pre-charge circuit reaches analog value, described controller sends a signal to low limit MOSFET and drives
Dynamic device, drives described pre-charge circuit to connect, and big electric current just can flow through from described pre-charge circuit, it is achieved thereby that preliminary filling
Electricity Functional, enters normal mode of operation, and it uses MOSFET power tube, and pre-charge circuit is built-in and overcurrent protection to realize
Function, had both reduced system cost, reduces again volume, also improves reliability simultaneously, has preferable application prospect.
In a preferred embodiment, described pre-charge circuit preferably includes two electrochemical capacitors in parallel, described two
One of individual electrochemical capacitor point in parallel connection input, the voltage on described controller two described electrochemical capacitors of detection, other one
Individual point in parallel, by power resistor ground connection, described power resistor is parallel with a MOSFET pipe, when the voltage on electrochemical capacitor
When value reaches analog value, then send a signal to described low limit mosfet driver and drive a described MOSFET pipe switch.
In a preferred embodiment, described current foldback circuit includes that comparator, described comparator are used for detecting contrast
A described upper electric current of MOSFET pipe switch realizes overcurrent protection function.
In a preferred embodiment, the most preferred rated voltage of described electrochemical capacitor is 450V, but is not limited to this, also
Other numerical value can be used.
In a preferred embodiment, described MOSFET power circuit includes MOSFET pipe Q2, MOSFET pipe Q3, MOSFET
Pipe Q4, MOSFET pipe Q5, MOSFET pipe Q6 and MOSFET pipe Q7, described MOSFET pipe Q5, MOSFET pipe Q6 and MOSFET manage
The side of Q7 has been also respectively connected with resistance R4, resistance R5 and resistance R6, and concrete connected mode is as shown in Figure 3.
In a preferred embodiment, the resistance of described power resistor is 500 ohm, but is not limited to this, also can use
Other numerical value.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely can carry out various change and amendment in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.
Claims (5)
1. the car electric air conditioner driver of a precharge, it is characterised in that include pre-charge circuit, described pre-charge circuit
Connecting input, described pre-charge circuit is also respectively connected with MOSFET power circuit, current foldback circuit and low limit MOSFET and drives
Device, described low limit mosfet driver connects controller, and described controller also detects the voltage of described pre-charge circuit, described pre-
Charging circuit includes two electrochemical capacitors in parallel, and of said two electrochemical capacitor point in parallel connects input, another one
Point in parallel, by power resistor ground connection, described power resistor is parallel with a MOSFET pipe, described low limit mosfet driver
Drive a described MOSFET pipe switch.
2. the car electric air conditioner driver of precharge as claimed in claim 1, it is characterised in that described current foldback circuit
Including comparator.
3. the car electric air conditioner driver of precharge as claimed in claim 2, it is characterised in that the volume of described electrochemical capacitor
Determining voltage is 450V.
4. the car electric air conditioner driver of the precharge as described in any one of claim 1-3, it is characterised in that described
MOSFET power circuit include MOSFET pipe Q2, MOSFET pipe Q3, MOSFET pipe Q4, MOSFET pipe Q5, MOSFET pipe Q6 and
MOSFET pipe Q7, the side of described MOSFET pipe Q5, MOSFET pipe Q6 and MOSFET pipe Q7 has been also respectively connected with resistance R4, resistance
R5 and resistance R6.
5. the car electric air conditioner driver of precharge as claimed in claim 4, it is characterised in that the resistance of described power resistor
Value is 500 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620295872.XU CN205791581U (en) | 2016-04-11 | 2016-04-11 | A kind of car electric air conditioner driver of precharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620295872.XU CN205791581U (en) | 2016-04-11 | 2016-04-11 | A kind of car electric air conditioner driver of precharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205791581U true CN205791581U (en) | 2016-12-07 |
Family
ID=57414663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620295872.XU Active CN205791581U (en) | 2016-04-11 | 2016-04-11 | A kind of car electric air conditioner driver of precharge |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130086A (en) * | 2016-04-11 | 2016-11-16 | 苏州正弦波机电科技有限公司 | A kind of car electric air conditioner driver of precharge |
| CN108454407A (en) * | 2017-12-29 | 2018-08-28 | 北汽（常州）汽车有限公司 | The electric automobile air-conditioning system electrification control method of the resistance of preliminary filling containing air-conditioning |
-
2016
- 2016-04-11 CN CN201620295872.XU patent/CN205791581U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130086A (en) * | 2016-04-11 | 2016-11-16 | 苏州正弦波机电科技有限公司 | A kind of car electric air conditioner driver of precharge |
| CN108454407A (en) * | 2017-12-29 | 2018-08-28 | 北汽（常州）汽车有限公司 | The electric automobile air-conditioning system electrification control method of the resistance of preliminary filling containing air-conditioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190115 Address after: 215200 558 FENHU Road, Wujiang District, Suzhou, Jiangsu Patentee after: Amperex Technology Limited (Suzhou) Address before: 215200 Luxin Avenue 627, Lili Town, Wujiang District, Suzhou City, Jiangsu Province Patentee before: SUZHOU SINE-WAVE MECHANICAL & ELECTRICAL TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right |