CN104019527A - Air conditioning system of electric automobile - Google Patents
Air conditioning system of electric automobile Download PDFInfo
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- CN104019527A CN104019527A CN201410293467.XA CN201410293467A CN104019527A CN 104019527 A CN104019527 A CN 104019527A CN 201410293467 A CN201410293467 A CN 201410293467A CN 104019527 A CN104019527 A CN 104019527A
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Abstract
The invention discloses an air conditioning system of an electric automobile, and belongs to the technical field of air conditioners. The air conditioning system comprises an air conditioning switch and a fan feedback module which are integrated on an air conditioning control panel, an air blower, a condenser fan, a compressor, a whole automobile controller, a first relay and a second relay, wherein the fan feedback module is connected with the air blower and outputs a level signal by judging whether the air blower works normally; a coil of the first relay is connected between the air conditioning switch and the fan feedback module; a contact of the first relay is connected with the compressor; the first relay is switched off or switched on according to an air conditioning switch signal and the level signal of the fan feedback module to judge whether the compressor is started to work; one end of the whole automobile controller is connected with the compressor, and the other end of the whole automobile controller is connected with the condenser fan by virtue of the second relay; the whole automobile controller is used for controlling the second relay to be switched on or switched off according to the working state of the compressor so as to judge whether the condenser fan to be started to perform refrigeration. The system is short in development period and low in development cost.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of electric automobile air-conditioning system.
Background technology
Increasingly serious along with global energy, environmental problem, developing energy-conservation and environmentally friendly vehicle becomes the inevitable choice of automobile industry, has obtained develop rapidly as the electric automobile of new-energy automobile Typical Representative in recent years.
Based on there being larger difference in electric automobile and traditional fuel-engined vehicle structure, make electric automobile air-conditioning system also be different from traditional fuel-engined vehicle, both differences are mainly reflected in following two aspects: the compressor of (1) electric automobile air-conditioning system by Motor Drive, compressor displacement is little, rotating speed is high, motor need special controller drive; (2) engine exhaust heat of fuel-engined vehicle be can not re-use as the thermal source heating, and design thermal source and control system separately needed.Therefore, transform traditional fuel-engined vehicle as electric automobile, often need to develop more auxiliary component.
In prior art, for example, due to some vehicle in traditional fuel-engined vehicle,, the air-conditioning system of commercial car adopts armstrong's patent wire drawing control more, is transforming as after electric automobile, need to again develop air-conditioner controller and the actuator etc. in air-conditioning system, cause development cost higher, the construction cycle is long.
Summary of the invention
The embodiment of the present invention provides a kind of electric automobile air-conditioning system, by circuit is formed and transformed, makes full use of the partial function of original air-conditioning system, and development cost is low, and the construction cycle is short.
The technical scheme that the embodiment of the present invention provides is as follows:
A kind of electric automobile air-conditioning system, comprising: be integrated in air-conditioning switch and blower fan feedback module, air blast, condenser fan, compressor, entire car controller, the first relay and the second relay on Air-Conditioning Control Panel;
Described blower fan feedback module is connected with described air blast, whether normally works according to described air blast, and outputs level signals;
The coil of described the first relay is connected between described air-conditioning switch and described blower fan feedback module, the contact of described the first relay is connected with described compressor, described the first relay disconnects or adhesive according to the level signal of described air-conditioning switch signal and described blower fan feedback module, whether starts work to control described compressor;
One end of described entire car controller is connected with described compressor, the other end is connected with described condenser fan by described the second relay, described entire car controller is according to the duty of described compressor, control described the second relay adhesive or disconnection, whether start refrigeration to control described condenser fan.
Preferably, also comprise: heater, heat switch and the 3rd relay;
One end of described heater is connected with described blower fan feedback module, the other end is connected with the described switch that heats by described the 3rd relay, described heater according to the level signal of described blower fan feedback module and described in heat switch on off state start or stop work.
Preferably, also comprise: the 4th relay and electrokinetic cell, the coil of described the 4th relay is connected with the described switch that heats by described the 3rd relay, and the contact of described the 4th relay is connected between described electrokinetic cell and described heater.
Preferably, also comprise: be connected to the temperature controller between described air-conditioning switch and described the first relay coil, described temperature controller is also connected with described blower fan feedback module.
Preferably, also comprise: be connected to the binary pressure switch between described the first relay coil and described temperature controller.
Preferably, also comprise: for described electric automobile air-conditioning system provides the low tension battery of controlling voltage, one end ground connection of described low tension battery, the other end is connected with the 3rd relay with described the second relay respectively.
Preferably, described heater is thermistor heater, and is provided with temperature switch on described thermistor heater.
Preferably, the contact of described air blast and described the first relay is connected to the ground respectively.
Preferably, the coil of described the second relay is connected between described entire car controller and ground, and the contact of described the second relay is connected between described low tension battery and described condenser fan.
Preferably, one end of the coil of described the 3rd relay is connected with described heater, the other end successively with describedly heat the contact of switch, described the 3rd relay, the coil of the 4th relay is connected in series rear ground connection.
The electric automobile air-conditioning system that the embodiment of the present invention provides, by the air-conditioning switch on collection Air-Conditioning Control Panel and the signal of blower fan feedback module, control the first relay adhesive or disconnection, thereby to compressor, whether startup work is controlled, whether entire car controller, again according to the duty of compressor, is started and is freezed by the second Control condenser fan.This electric automobile air-conditioning system, make full use of the structure of original armstrong's patent wire drawing air-conditioning, by circuit structure is redesigned, can realize the transformation of air-conditioning system, compared with again developing air-conditioner controller, actuator, development cost obviously reduces, and the construction cycle effectively shortens, easily realization, safe and reliable, is convenient to safeguard.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skill in the art, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit theory diagrams of a kind of air conditioning system for electric car of providing of the embodiment of the present invention.
Reference numeral:
1-Air-Conditioning Control Panel; 2-air-conditioning switch; 3-blower fan feedback module; 4-air blast;
5-condenser fan; 6-compressor; 7-entire car controller; 8-the first relay;
9-the second relay; 10-heater; 11-heats switch; 12-the 3rd relay;
13-the 4th relay; 14-electrokinetic cell; 15-temperature controller; 16-binary pressure switch;
17-low tension battery; 18-temperature switch.
Detailed description of the invention
In order to make those skilled in the art person understand better the scheme of the embodiment of the present invention, below in conjunction with drawings and embodiments, the embodiment of the present invention is described in further detail.
As shown in Figure 1, electric automobile air-conditioning system can comprise: be integrated in air-conditioning switch 2 and blower fan feedback module 3, air blast 4, condenser fan 5, compressor 6, entire car controller 7, the first relay 8 and the second relay 9 on Air-Conditioning Control Panel 1; Wherein, blower fan feedback module 3 can be connected with air blast 4, whether normally work according to air blast 4, and outputs level signals; The coil of the first relay 8 can be connected between air-conditioning switch 2 and blower fan feedback module 3, the contact of the first relay 8 can be connected with compressor 6, the first relay 8 can disconnect or adhesive according to the level signal of air-conditioning switch signal and blower fan feedback module 3, whether starts work to control compressor 6; One end of entire car controller 7 can be connected with compressor 6, the other end can be connected with condenser fan 5 by the second relay 9, entire car controller 7 can, according to the duty of compressor 6, be controlled the second relay 9 adhesives or disconnection, whether starts refrigeration to control condenser fan 5.Wherein, the level signal that blower fan feedback module 3 is exported can be high level signal, can be also low level signal, specifically can arrange as required.Compressor 6 preferably adopts swirl motor compressor all-in-one.This electric automobile air-conditioning system, can make full use of the structure of original armstrong's patent wire drawing air-conditioning, by circuit structure is redesigned, can realize the transformation of air-conditioning system, compared with again developing air-conditioner controller, actuator, development cost obviously reduces, and the construction cycle effectively shortens, easily realization, safe and reliable, is convenient to safeguard.
Above-mentioned electric automobile air-conditioning system can also comprise: heater 10, heat switch 11 and the 3rd relay 12; Wherein, one end of heater 10 can be connected with blower fan feedback module 3, the other end can by the 3rd relay 12 with heat switch 11 and be connected, heater 10 can start or stop work according to the level signal of blower fan feedback module 3 and the on off state that heats switch 11.Special heat switch 11 whether heater 10 worked and controlled by arranging, not only can refrigeration cool-down, can also be in needs heat temperature raising, realize the bidirectional modulation of temperature.Wherein, according to the space size of Air-Conditioning Control Panel 1, can also be integrated on Air-Conditioning Control Panel 1 heating switch 11, can certainly be arranged on other positions as individual components using heating switch 11.By blower fan feedback module 3 and the work that heats switch 11 co-controlling heaters 10, the signal Display Drum blower fan 4 that blower fan feedback module 3 feeds back does not have in the situation of normal work, and heater 10 cannot start; When in the situation of signal Display Drum blower fan that blower fan feedback module 3 feeds back 4 normal work, heater 10 could startup work, thereby can realize the starting protection of thermistor heater, prevent dry combustion method and cause fire incident.
Above-mentioned heater 10 preferably adopts thermistor heater, especially PTC (Positive Temperature Coefficient, positive temperature coefficient) thermistor heater.On thermistor heater, can be provided with temperature switch 18, when the temperature of the thermistor in thermistor heater is lower than setting value, for example, 85 DEG C time, temperature switch 18 closures, thermistor heater starts heating, in the time that thermistor temp reaches setting value, temperature switch 18 can disconnect automatically, make thermistor heater stop heating, thereby prevent that temperature from continuing to raise, the security incidents such as initiation fire.
Above-mentioned electric automobile air-conditioning system can further include: the 4th relay 13 and electrokinetic cell 14, the coil of the 4th relay 13 can by the 3rd relay 12 with heat switch 11 and be connected, the contact of the 4th relay 13 can be connected between electrokinetic cell 14 and heater 10.Wherein, electrokinetic cell 14 preferably adopts the high tension battery of 380V.Distinguish according to wire loop operating voltage height, the 3rd relay 12 is low-voltage relay, and the 4th relay 13 is high-voltage relay.Control the 3rd relay 12 adhesives or disconnection by heating switch 11, and then indirectly control the 4th relay 13 and whether cut off the circuit between heater 10 and electrokinetic cell 14, adopt different relays to control high-low circuit, security performance is good, and is convenient to safeguard.
In embodiments of the present invention, in order to realize automatic control, can also between the air-conditioning switch of the Air-Conditioning Control Panel of electric automobile air-conditioning system 12 and the coil of the first relay 8, temperature controller 15 be set, temperature controller 15 is also connected with blower fan feedback module 3.On temperature controller 15, be provided with and be close to the temperature sensor that evaporimeter arranges, when after the normal work of level signal Display Drum blower fan 4 of blower fan feedback module 3, temperature sensor starts to gather the temperature of evaporimeter, if the temperature of evaporimeter is less than or equal to the first preset temperature, for example ,-1 DEG C time, temperature controller 15 disconnects and cuts off circuit connection, cut off compressor control loop, thereby it is invalid that air-conditioning switch 2 is exported; If evaporator temperature rises to the second preset temperature, for example, more than 4 DEG C time, temperature controller 15 closures, make the conducting of compressor control loop, thereby make air-conditioning switch 2 outputs effectively.According to the temperature of evaporimeter, control and when freeze, when stop refrigeration, the device frosting that can avoid evaporating, and effectively save the energy.
Between above-mentioned temperature controller 15 and the coil of the first relay 8, be also provided with binary pressure switch 16, wherein, the test side of binary pressure switch 16 can be arranged on diverse location according to line arrangement situation.For example, can with condenser and evaporimeter between pipeline be connected, when detecting that the pressure of this section of pipeline is excessive or too small, for example, when being greater than 2.4MPa or being less than 1.2MPa, binary pressure switch 16 is moved, and cuts off circuit and connects, thereby compressor control loop is disconnected, after air-conditioning switch 2 closures, still can not freeze, can effectively save the energy.
In embodiments of the present invention, the low tension battery 17 that can adopt 12V provides control voltage for electric automobile air-conditioning system, and one end of this low tension battery 17 can ground connection, and the other end can be connected with the 3rd relay 12 with the second relay 9 respectively; Air blast 4 can be connected to the ground respectively with the contact of the first relay 8; The coil of the second relay 9 can be connected between entire car controller 7 and ground, the contact of the second relay 9 can be connected between low tension battery 17 and condenser fan 5; One end of the coil of the 3rd relay 12 can be connected with heater 10, the other end successively with heat the contact of switch 11, the 3rd relay 12, the coil of the 4th relay 13 is connected in series rear ground connection.
The operation principle of the electric automobile air-conditioning system of a kind of the concrete structure below embodiment of the present invention being provided briefly introduces.
Air-conditioning system process of refrigerastion is roughly as follows: open the air-conditioning switch 2 on Air-Conditioning Control Panel 1, blower fan feedback module 3 starts to gather the working state signal of air blast 4, and exports high level or low level signal.When after blower fan feedback module 3 output low level signals, can think that air blast 4 is in normal operating conditions, temperature sensor on temperature controller 15 starts to gather the temperature of evaporimeter, when the temperature of evaporimeter is higher than setting value, temperature controller 15 circuit closeds, test side in binary pressure switch 16 starts signal piping pressure, when loine pressure is in setting range, binary pressure switch 16 closures, the coil of the first relay 8 obtains electric, the normally opened contact adhesive of the first relay 8, make compressor 6 startup work, compressor 6 can be communicated by letter to entire car controller 7 transmitted signals by CAN, entire car controller 7 is received after the signal of compressor 6 normal work, output high level signal is given the second relay 9, make the coil of the second relay 9 obtain electric, the normally opened contact adhesive of the second relay 9, make condenser fan 5 conductings start to freeze, when after refrigeration certain hour, the temperature sensor on temperature controller 15 detects that the temperature of evaporimeter reaches or lower than setting value, temperature controller 15 control circuits disconnect, and stop process of refrigerastion, in order to avoid evaporimeter frosting, thereby realize temperature protection function.
Air-conditioning system heating process is roughly as follows: closure heats switch 11, thermistor heater starts to gather the working state signal of the air blast 4 that blower fan feedback module 3 feeds back, in the time of blower fan feedback module 3 output low level signal, can think that air blast 4 normally works, now, if the temperature of the thermistor in thermistor heater is lower than setting value, temperature switch 18 closures, now, the coil of the 3rd relay 12 obtains electric, the normally opened contact adhesive of the 3rd relay 12, and then the coil that makes the 4th relay 13 obtains electric, the normally opened contact adhesive of the 4th relay 13, controlling thermistor heater starts to heat, until thermistor temp reaches while setting value, temperature switch 18 disconnects automatically, or manually disconnect and heat switch 11, can make thermistor heater stop heating process.
The electric automobile air-conditioning system that the embodiment of the present invention provides, by the air-conditioning switch on collection Air-Conditioning Control Panel and the signal of blower fan feedback module, control the first relay adhesive or disconnection, thereby to compressor, whether startup work is controlled, whether entire car controller, again according to the duty of compressor, is started and is freezed by the second Control condenser fan.This electric automobile air-conditioning system, on the basis of original armstrong's patent wire drawing air-conditioning, only by circuit structure is redesigned, can realize the transformation of air-conditioning system, compared with again developing air-conditioner controller, actuator, development cost obviously reduces, and the construction cycle effectively shortens, easily realization, safe and reliable, is convenient to safeguard.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an electric automobile air-conditioning system, is characterized in that, comprising:
Be integrated in air-conditioning switch and blower fan feedback module, air blast, condenser fan, compressor, entire car controller, the first relay and the second relay on Air-Conditioning Control Panel;
Described blower fan feedback module is connected with described air blast, whether normally works according to described air blast, and outputs level signals;
The coil of described the first relay is connected between described air-conditioning switch and described blower fan feedback module, the contact of described the first relay is connected with described compressor, described the first relay disconnects or adhesive according to the level signal of described air-conditioning switch signal and described blower fan feedback module, whether starts work to control described compressor;
One end of described entire car controller is connected with described compressor, the other end is connected with described condenser fan by described the second relay, described entire car controller is according to the duty of described compressor, control described the second relay adhesive or disconnection, whether start refrigeration to control described condenser fan.
2. electric automobile air-conditioning system according to claim 1, is characterized in that, also comprises: heater, heat switch and the 3rd relay;
One end of described heater is connected with described blower fan feedback module, the other end is connected with the described switch that heats by described the 3rd relay, described heater according to the level signal of described blower fan feedback module and described in heat switch on off state start or stop work.
3. electric automobile air-conditioning system according to claim 2, it is characterized in that, also comprise: the 4th relay and electrokinetic cell, the coil of described the 4th relay is connected with the described switch that heats by described the 3rd relay, and the contact of described the 4th relay is connected between described electrokinetic cell and described heater.
4. electric automobile air-conditioning system according to claim 3, is characterized in that, also comprises: be connected to the temperature controller between described air-conditioning switch and described the first relay coil, described temperature controller is also connected with described blower fan feedback module.
5. electric automobile air-conditioning system according to claim 4, is characterized in that, also comprises: be connected to the binary pressure switch between described the first relay coil and described temperature controller.
6. electric automobile air-conditioning system according to claim 5, it is characterized in that, also comprise: for described electric automobile air-conditioning system provides the low tension battery of controlling voltage, one end ground connection of described low tension battery, the other end is connected with the 3rd relay with described the second relay respectively.
7. electric automobile air-conditioning system according to claim 6, is characterized in that: described heater is thermistor heater, and is provided with temperature switch on described thermistor heater.
8. electric automobile air-conditioning system according to claim 7, is characterized in that: the contact of described air blast and described the first relay is connected to the ground respectively.
9. electric automobile air-conditioning system according to claim 5, it is characterized in that: the coil of described the second relay is connected between described entire car controller and ground, the contact of described the second relay is connected between described low tension battery and described condenser fan.
10. electric automobile air-conditioning system according to claim 5, it is characterized in that: one end of the coil of described the 3rd relay is connected with described heater, the other end successively with describedly heat the contact of switch, described the 3rd relay, the coil of the 4th relay is connected in series rear ground connection.
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| CN104260616A (en) * | 2014-10-24 | 2015-01-07 | 北京长安汽车工程技术研究有限责任公司 | Electric automobile heating system and method |
| CN104773047A (en) * | 2015-03-17 | 2015-07-15 | 河南银泰新能源汽车有限公司 | Electric automobile air conditioner panel control system and control method thereof |
| CN105346354A (en) * | 2015-10-27 | 2016-02-24 | 北京新能源汽车股份有限公司 | Air conditioner system for blade electric vehicle and control method |
| CN105365526A (en) * | 2015-10-21 | 2016-03-02 | 成都雅骏新能源汽车科技股份有限公司 | Control circuit of refrigerating air conditioner of electric vehicle |
| CN106627032A (en) * | 2016-10-21 | 2017-05-10 | 林凯强 | Vehicle air-conditioner compressor intelligent controller |
| CN106976379A (en) * | 2017-05-02 | 2017-07-25 | 安徽江淮松芝空调有限公司 | A kind of automobile air conditioner control system |
| CN110271384A (en) * | 2019-06-11 | 2019-09-24 | 东风汽车股份有限公司 | pure electric vehicle air conditioner control system and method |
| CN110696584A (en) * | 2018-12-29 | 2020-01-17 | 长城汽车股份有限公司 | HVH driving method of electric vehicle, vehicle-mounted air conditioner controller and vehicle control unit |
| CN113432269A (en) * | 2021-05-28 | 2021-09-24 | 青岛海尔空调电子有限公司 | Control method of refrigeration and freezing unit and refrigeration and freezing unit |
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| CN110696584A (en) * | 2018-12-29 | 2020-01-17 | 长城汽车股份有限公司 | HVH driving method of electric vehicle, vehicle-mounted air conditioner controller and vehicle control unit |
| CN110271384B (en) * | 2019-06-11 | 2020-07-14 | 东风汽车股份有限公司 | Pure electric vehicle air conditioner control system and method |
| CN110271384A (en) * | 2019-06-11 | 2019-09-24 | 东风汽车股份有限公司 | pure electric vehicle air conditioner control system and method |
| CN113432269A (en) * | 2021-05-28 | 2021-09-24 | 青岛海尔空调电子有限公司 | Control method of refrigeration and freezing unit and refrigeration and freezing unit |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automotive Co., Ltd. |