CN102645000B - Air conditioning system of electric vehicle - Google Patents
Air conditioning system of electric vehicle Download PDFInfo
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- CN102645000B CN102645000B CN201210002129.7A CN201210002129A CN102645000B CN 102645000 B CN102645000 B CN 102645000B CN 201210002129 A CN201210002129 A CN 201210002129A CN 102645000 B CN102645000 B CN 102645000B
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Abstract
The invention discloses an air conditioning system of an electric vehicle. The air conditioning system of the electric vehicle comprises a compressor controller, an air conditioning management controller, an air blower, a refrigeration subsystem and a heating subsystem, wherein the refrigeration subsystem and the heating subsystem are respectively controlled through the air conditioning management controller; the compressor controller is mutually connected with a compressor and is used for receiving a speed regulation signal and a starting signal which are output from the air conditioning management controller to realize control on the compressor; the heating subsystem comprises a positive temperature coefficient (PTC) controller and at least two PTC heaters; and the air blower is provided with a warm air volume switch used for regulating warm air volume. The air conditioning system of the electric vehicle is compact in structure and is high in degree of automation. Through installing a plurality of PTC heaters and changing the control mode of the air conditioning system of the electric vehicle, multiple temperature combinations can be realized, and the requirement in real life is met. Meanwhile, the problem that refrigeration surplus can be possibly caused because a traditional vehicle-mounted air conditioner of the electric vehicle is operated by one refrigerating output all the time is avoided, energy sources can be saved, and the safety of the air conditioning system is enhanced.
Description
Technical field
The present invention relates to control technology for electric motor car field, particularly a kind of air conditioning system for electric car.
Background technology
Air conditioning system for electric car is different from fuel vehicle, its difference major embodiment is in the following areas: compressor by Motor Drive, compressor displacement is little, rotating speed is high, motor needs that special controller drives, refrigerating capacity is not driven a vehicle, and operating mode affects, therefore the design of air conditioner of electric vehicle and fuel vehicle exist larger different, for existing air conditioning system for electric car, in refrigerating capacity, be difficult to the problem regulating, electric motor car defrosting-defogging must be introduced other thermal source, heat must have safe control, is necessary to design a kind of novel air conditioning system for electric car.
Summary of the invention
In view of this, the object of this invention is to provide a kind of air conditioning system for electric car, can realize concentrated control respectively to heating unit, thereby meet the needs of actual life, can save the energy, strengthen the security of air-conditioning system simultaneously.
The object of the invention is to be achieved through the following technical solutions:
This kind of air conditioning system for electric car comprise compressor controller, air conditioning managing controller, air blast, refrigeration subsystem and add thermal sub-system, described refrigeration subsystem and add thermal sub-system and all control by air conditioning managing controller;
Described compressor controller and compressor are connected, and receive speed-regulating signal and the initiating signal of air conditioning managing controller output, realize the control to compressor;
The described thermal sub-system that adds comprises PTC controller and at least two ptc heaters, described air conditioning managing controller output controls signal to PTC controller with the same number of multichannel PTC of heater, the respectively corresponding ptc heater of each road PTC control signal, thus realize the control with the joining ptc heater of PTC controller;
On described air blast, be provided with for regulating the HVAC quantity switch of air of HVAC air quantity, gear information signal output part and the air conditioning managing controller of air blast are connected, described HVAC quantity switch of air is connected in series with A/C switch, PTC heater switch respectively, when one of them when action of A/C switch and PTC heater switch, HVAC quantity switch of air moves simultaneously, and described A/C switch, PTC heater switch are all attached to the switch acquisition port of air conditioning managing controller.
Further, described refrigeration subsystem comprises evaporimeter and condenser assembly, and described condenser assembly is attached to the switch acquisition port of air conditioning managing controller by a normality pressure switch;
Further, be provided with PTC temperature sensor on described ptc heater, the signal input part of the signal output part of described PTC temperature sensor and air conditioning managing controller is connected;
Further, on described evaporimeter, be provided with evaporator temperature sensor, the signal input part of the signal output part of described evaporator temperature sensor and air conditioning managing controller is connected;
Further, be provided with PTC temperature protection module on described PTC controller, this module connects outside PTC protection switch, and when heter temperature is higher than setting value, effectively, PTC controller cuts off the output to ptc heater in protection switch output;
Further, battery of electric vehicle power supply unit is connected by a contactor and compressor controller, and compressor is powered; Between this contactor and air conditioning managing controller, for controlling, connect;
Further, described PTC controller is two.
The invention has the beneficial effects as follows:
Compact conformation of the present invention, automaticity is high, by a plurality of ptc heaters being set and changing its control model, can realize the combination of various temperature, met real-life needs, meanwhile, the present invention has avoided existing electric-vehicle-mounted air-conditioning always with a refrigerating capacity running, the problem of the refrigeration surplus that may cause, can save the energy, strengthen the security of air-conditioning system.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating below, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized and be obtained by description and claims below.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is that circuit of the present invention connects schematic diagram;
Fig. 2 is the internal circuit configuration figure of air conditioning managing controller;
Fig. 3 is the internal circuit configuration figure that PTC controls.
The specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment is only for the present invention is described, rather than in order to limit the scope of the invention.
As shown in Figure 1, air conditioning system for electric car of the present invention, comprises compressor controller, air conditioning managing controller, air blast, refrigeration subsystem and adds thermal sub-system, refrigeration subsystem and add thermal sub-system and all control by air conditioning managing controller; Battery of electric vehicle power supply unit in figure comprises power accumulator group and DC-DC converter, according to difference directly the powering respectively or change rear power supply of each parts and module, specifically supplies electric connection mode as shown in Figure 1.
Compressor controller and compressor are connected, and receive speed-regulating signal and the initiating signal of air conditioning managing controller output, realize the control to compressor;
Add thermal sub-system and comprise PTC controller and two ptc heaters, i.e. PTC1 in figure and PTC2, the respectively corresponding ptc heater of each road PTC control signal, thus realize the control with the joining ptc heater of PTC controller; On ptc heater, be provided with PTC temperature sensor, the signal input part of the signal output part of described PTC temperature sensor and air conditioning managing controller is connected.In the present embodiment, realized the combination of ptc heater and arranged and control respectively, PTC1 is power 700W, and PTC2 is power 1400W, thereby can as required, according to permutation and combination, obtain three kinds of power combination.
On air blast, be provided with for regulating the HVAC quantity switch of air of HVAC air quantity, gear information signal output part and the air conditioning managing controller of air blast are connected, described HVAC quantity switch of air is connected in parallel with A/C switch, PTC heater switch respectively, when one of them when action of A/C switch and PTC heater switch, HVAC quantity switch of air moves simultaneously, and A/C switch, PTC heater switch are all attached to the switch acquisition port of air conditioning managing controller.
Refrigeration subsystem comprises compressor, evaporimeter and condenser assembly, condenser assembly is attached to the switch acquisition port of air conditioning managing controller by a bifurcation pressure switch, on evaporimeter, be provided with evaporator temperature sensor, the signal input part of the signal output part of evaporator temperature sensor and air conditioning managing controller is connected.
When ignition switch is during in " ON " gear, compressor controller, A/C switch, air conditioning managing controller, PTC heater switch, HVAC quantity switch of air, air blast, condenser assembly are in power-up state.
As shown in Figure 2, this figure is the internal structure schematic diagram of air conditioning managing controller, and in figure, A4 port, A14 port and A15 port are level collection signal input port, particularly, A4 port is attached to A/C switch, and A14 port is attached to PTC heater switch, and A15 port is attached to bifurcation pressure switch; A6, A16, A17 and A7 port are as sensor collection signal input port, and particularly, A6 is attached to evaporator temperature sensor, and A7 is attached to PIC temperature sensor, and A16 is attached to environment temperature sensor; A13 and A5 port are as interruption/fault input port; A3 port, as gear information input port, is connected with air blast.Above-mentioned port is as external signal input port, and signal transmission is to the single-chip microcomputer logic judging circuit of controller; A8, A18, A9, A19, A10 and A20 port, as signal output port, are outwards exported control signal, and particularly, A8, A18 port and compressor controller are connected, and wherein A8 port is used for exporting speed-regulating signal, and A18 is used for exporting initiating signal; A9 port and condenser assembly are connected, for exporting condenser fan signal; A19 port is connected with the contactor being connected on compressor controller, and battery of electric vehicle power supply unit is connected by this contactor and compressor controller, and compressor is powered; A10 port and A20 port are used for exporting two-way PTC and control signal to PTC controller, realize the control to ptc heater.
As shown in Figure 3; this figure is the internal structure schematic diagram of PTC controller; this controller has comprised PTC temperature protection module, overcurrent protection module, controller temperature protection module and under-voltage overvoltage protective module, and above-mentioned module is all connected with single-chip microcomputer logic judging circuit.The connection situation of each port is as follows: wherein, C1, C3 port be as power input, after power supply processing module is processed for each module is powered, connect+12v of B1 port, B2 port ground connection; B3, B4 port are attached to respectively A10 and the A20 port of air conditioning managing controller, as the input of control signal, through ON/OFF input judge module, are attached to single-chip microcomputer logic judging circuit; B8, as the fault-signal output port of single-chip microcomputer logic judging circuit, is attached to the A5 port of air conditioning managing controller; B6 port connects ground connection as the output of PTC temperature protection module with PTC protection switch, and when heter temperature is higher than setting value, effectively, described PTC controller cuts out output in protection switch output, stops heating; The PTC1 driver module of series connection and intelligent metal-oxide-semiconductor I are as single-chip microcomputer logic judging circuit Yi road output port, the PTC2 driver module of series connection and intelligent metal-oxide-semiconductor II are as another road output port of single-chip microcomputer logic judging circuit, two-way output port is attached to respectively PTC1 and PTC2, and PTC is driven to control.Wherein, C3 port is as the control signal output of PTC1, and C4 port is as the control signal output of PTC2.
In the present embodiment, air conditioning managing controller, after receiving the fault-signal that PTC controller sends, through logic judgement, can disconnect contactor, and compressor is quit work.
The control logic of each parts of the present invention is as follows:
(1) air-conditioning system
When AC output effectively, and high-low pressure input is effectively, and air blast feedback is effectively, interrupt requests is inputted when invalid, controls as follows compressor controller:
1. when PTC is during in opening, close PTC;
2. when evaporating temperature sensor is lower than-1 ℃, or environment temperature sensor is lower than 0 ℃, closes compression machine controller, and the output of A/C switching signal is invalid, time delay 5s, AIR COND RLY Air Conditioner Relay output is invalid;
Otherwise, when evaporator temperature sensor is lower than 1 ℃, effectively, time delay 2s, opens compressor controller for AIR COND RLY Air Conditioner Relay output, effectively, speed governing is fixed as minimum speed to the output of A/C switching signal;
Otherwise, when evaporator temperature sensor is higher than 2 ℃, effectively, time delay 2s, opens compressor controller for AIR COND RLY Air Conditioner Relay output, the output of A/C switching signal effectively, automatic speed regulation, the range of speeds is 500-5000 rev/min.
When AC output is invalid, or high-low pressure input is invalid, or air blast feeds back when invalid, interrupt requests input effectively, closes compression machine controller, the output of A/C switching signal is invalid, time delay 15s, AIR COND RLY Air Conditioner Relay output is invalid;
It is 3 ℃ for keeping evaporating temperature constant that air conditioning managing controller is controlled target, and control accuracy is ± 2 ℃.
(2) condenser fan is controlled
When AC input effectively, and high-low pressure input is effectively, and air blast feeds back when effective, controls as follows condenser fan:
The output of condenser fan signal effectively;
When AC input is invalid, or high-low pressure input is invalid, or air blast feeds back when invalid, controls as follows condenser fan:
Time delay 15s, condenser fan output is invalid, condenser fan signal output low level;
(3) PTC controls
When PTC input effectively, and air blast feedback is effectively, PTC fault-signal is invalid, when air door switch is effective, when compressor is during in opening, close compressor, time delay 15S, opens PTC; Otherwise, when compressor is during in closed condition, control as follows PTC:
1. when environment temperature is during lower than 8 ℃, when PTC temperature is during lower than 90 ℃, PTC1 output effectively; PTC2 output effectively;
2. when environment temperature is higher than 8 ℃, lower than 10 ℃, when PTC temperature is during lower than 90 ℃, PTC2 output effectively;
3. when environment temperature is during higher than 10 ℃, lower than 25 ℃, and PTC1 output is effectively during lower than 90 ℃ when PTC temperature;
When PTC input is invalid, or air blast feeds back when invalid, or PTC temperature is during higher than 100 ℃, controls as follows PTC:
PTC1 and PTC2 output are invalid.
It is 90 ℃ for keeping PTC temperature constant that air conditioning managing controller is controlled target, and control accuracy is ± 5 ℃
The present invention also has the content of following aspect to require emphasis:
1) air-conditioning refrigeration system, the necessary triangular web work of heating system, the in the situation that of air-conditioning refrigeration system work, user opens heating system request, air conditioning managing controller is to heating system request, with interrupt signal, process first out code system condensing device fan, compressor controller, compressor etc., delayed startup heater, delay time guarantees that refrigeration system electrical equipment shuts down;
2) air-conditioning refrigeration system starts, stops, and while requiring condenser fan to start, stop prior to compressor of air conditioner, after condenser fan, in compressor, stops;
3) when air-conditioning refrigeration system is opened, PTC surface temperature sampling collecting temperature is considered as environment inside car temperature, temperature surpasses refrigeration and requires temperature, air conditioning managing controller is to compressor speed regulating control, to reach the object of environmental protection and energy saving;
4) when air-conditioning heating system is opened, evaporator temperature sampling can be considered environment inside car temperature, more than temperature reaches defrosting-defogging setting value, air conditioning managing controller is controlled temperature to PTC heating and a temperature range, is started, stops, dwell time starting time cycle T > 10min;
5), when air conditioning managing controller receives interrupt requests, air-conditioning quits work, after interrupt condition is removed, and compressor of air conditioner delayed firing.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. air conditioning system for electric car, it is characterized in that: described air-conditioning system comprises compressor controller, air conditioning managing controller, air blast, refrigeration subsystem and add thermal sub-system described refrigeration subsystem and add thermal sub-system and all control by air conditioning managing controller;
Described compressor controller and compressor are connected, and receive speed-regulating signal and the initiating signal of air conditioning managing controller output, realize the control to compressor;
The described thermal sub-system that adds comprises PTC controller and at least two ptc heaters, described air conditioning managing controller output controls signal to PTC controller with the same number of multichannel PTC of heater, the respectively corresponding ptc heater of each road PTC control signal, thus realize the control with the joining ptc heater of PTC controller;
On described air blast, be provided with for regulating the HVAC quantity switch of air of HVAC air quantity, gear information signal output part and the air conditioning managing controller of air blast are connected, described HVAC quantity switch of air is connected in series with A/C switch, PTC heater switch respectively, when one of them when action of A/C switch and PTC heater switch, HVAC quantity switch of air moves simultaneously, and described A/C switch, PTC heater switch are all attached to the switch acquisition port of air conditioning managing controller.
2. air conditioning system for electric car as claimed in claim 1, is characterized in that: described refrigeration subsystem comprises evaporimeter and condenser assembly, and described condenser assembly is attached to the switch acquisition port of air conditioning managing controller by a bifurcation pressure switch.
3. air conditioning system for electric car as claimed in claim 1, is characterized in that: on described ptc heater, be provided with PTC temperature sensor, the signal input part of the signal output part of described PTC temperature sensor and air conditioning managing controller is connected.
4. air conditioning system for electric car as claimed in claim 2, is characterized in that: on described evaporimeter, be provided with evaporator temperature sensor, the signal input part of the signal output part of described evaporator temperature sensor and air conditioning managing controller is connected.
5. air conditioning system for electric car as claimed in claim 1; it is characterized in that: on described PTC controller, be provided with PTC temperature protection module, this module connects outside PTC protection switch, when heter temperature is higher than setting value; effectively, PTC controller cuts off the output to ptc heater in protection switch output.
6. air conditioning system for electric car as claimed in claim 1, is characterized in that: battery of electric vehicle power supply unit is connected by a contactor and compressor controller, and compressor is powered; Be connected with PTC controller, ptc heater is powered; Between this contactor and air conditioning managing controller, for controlling, connect.
7. air conditioning system for electric car as claimed in claim 1, is characterized in that: described PTC controller is two.
8. air conditioning system for electric car as claimed in claim 1, is characterized in that: described air conditioning managing controller, and can manage electric motor car refrigeration and also can manage electric motor car and heat.
9. air conditioning system for electric car as claimed in claim 1, it is characterized in that: described air conditioning managing controller, its interrupt signal input is connected with electric machine controller interrupt request singal output, and the interrupt requests that electric machine controller is sent is controlled and stopped refrigeration system, heating.
10. air conditioning system for electric car as claimed in claim 1, is characterized in that: described air conditioning managing controller, its air door switch signal input part is connected with air blast air door switch output, the initial conditions that air door switch signal is effectively opened for adding thermal sub-system.
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| CN201210002129.7A CN102645000B (en) | 2011-12-31 | 2012-01-05 | Air conditioning system of electric vehicle |
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| CN201110459679.7 | 2011-12-31 | ||
| CN201110459679 | 2011-12-31 | ||
| CN201210002129.7A CN102645000B (en) | 2011-12-31 | 2012-01-05 | Air conditioning system of electric vehicle |
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| CN102645000B true CN102645000B (en) | 2014-04-16 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103342091A (en) * | 2013-06-20 | 2013-10-09 | 东南（福建）汽车工业有限公司 | Control method and system of air conditioner of electric vehicle |
| CN104210327B (en) * | 2014-08-21 | 2016-08-31 | 江苏创导空调有限公司 | A kind of motor-driven air conditioning system for automobile |
| CN105966198B (en) * | 2016-06-14 | 2019-01-29 | 北京长安汽车工程技术研究有限责任公司 | A kind of electric car heating control method and system |
| CN106143049B (en) * | 2016-06-27 | 2018-07-17 | 北京新能源汽车股份有限公司 | The control method of the air handling system of electric vehicle |
| CN106042836B (en) * | 2016-06-27 | 2018-07-17 | 北京新能源汽车股份有限公司 | The control method of the air handling system of electric vehicle |
| CN106042835B (en) * | 2016-06-27 | 2018-03-13 | 北京新能源汽车股份有限公司 | The control method of the air handling system of electric automobile |
| CN106114129B (en) * | 2016-06-27 | 2018-10-16 | 北京新能源汽车股份有限公司 | The control method of the air handling system of electric vehicle |
| CN106114127B (en) * | 2016-06-27 | 2018-03-13 | 北京新能源汽车股份有限公司 | The control method of the air handling system of electric automobile |
| CN106114128B (en) * | 2016-06-27 | 2018-07-17 | 北京新能源汽车股份有限公司 | The control method of the air handling system of electric vehicle |
| CN110962528B (en) * | 2018-09-30 | 2022-11-25 | 上海汽车集团股份有限公司 | Automobile air conditioner control system and control method thereof |
| CN112937252A (en) * | 2021-01-28 | 2021-06-11 | 浙江合众新能源汽车有限公司 | Method for designing PTC energy-saving control logic of wind side of electric air conditioner |
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| CN102269455A (en) * | 2011-04-28 | 2011-12-07 | 上海奉天电子有限公司 | Air conditioning device for electric vehicle |
| CN202485150U (en) * | 2011-12-31 | 2012-10-10 | 重庆小康工业集团股份有限公司 | Air conditioning system for electric vehicles |
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| JPS5687731A (en) * | 1979-12-18 | 1981-07-16 | Nippon P-Mc Kk | Automatic controller for using water as heat source type air conditioning facility |
| DE50304601D1 (en) * | 2003-12-12 | 2006-09-21 | Behr France Rouffach Sas | Electric heating device for a motor vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102269455A (en) * | 2011-04-28 | 2011-12-07 | 上海奉天电子有限公司 | Air conditioning device for electric vehicle |
| CN202485150U (en) * | 2011-12-31 | 2012-10-10 | 重庆小康工业集团股份有限公司 | Air conditioning system for electric vehicles |
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Application publication date: 20120822 Assignee: Chongqing Ruichi Auto Industrial Co., Ltd. Assignor: Chongqing Xiaokang Industry Group Co., Ltd. Contract record no.: 2012500000092 Denomination of invention: Air-conditioner system and controlling method for electric vehicle License type: Exclusive License Record date: 20121203 |
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