CN102501744B - Air-conditioning system for electric vehicle - Google Patents

Air-conditioning system for electric vehicle Download PDF

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Publication number
CN102501744B
CN102501744B CN 201110425906 CN201110425906A CN102501744B CN 102501744 B CN102501744 B CN 102501744B CN 201110425906 CN201110425906 CN 201110425906 CN 201110425906 A CN201110425906 A CN 201110425906A CN 102501744 B CN102501744 B CN 102501744B
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China
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controller
port valve
air
connects
entire car
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Expired - Fee Related
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CN 201110425906
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CN102501744A (en
Inventor
隋毅
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Lifan Technology Group Co Ltd
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Lifan Industry Group Co Ltd
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Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses an air-conditioning system for an electric vehicle, and belongs to the field of air conditionings for electric vehicles. A first two-way valve and a second two-way valve are arranged on the conventional refrigeration system for the electric vehicle; the output end of a compressor is connected with air inlet valves of the first two-way valve and the second two-way valve through pipelines respectively; an air outlet valve of the first two-way valve is connected with a heating ventilation air conditioning (HVAC) system through a pipeline; and an air outlet valve of the second two-way valve is connected to a battery box which is used for placing a power battery and the like through a pipeline. When a user turns on an air-conditioning switch for refrigeration, if the temperature of the battery box is too high, the first two-way valve and the second two-way valve both act so as to refrigerate a passenger compartment and the battery box of the electric vehicle respectively; and when the user does not turn on the air-conditioning switch for refrigeration, if the temperature of the battery box is too high, the first two-way valve does not act, and the second two-way valve acts to refrigerate the battery box only, so the temperature in the battery box is reduced, and the aim of radiating heat well is fulfilled.

Description

Air conditioning system for electric car
Technical field
The present invention relates to air conditioning system for electric car, especially a kind of air conditioning system for electric car that not only can freeze but also can when temperature of powered cell is too high, freeze to power battery box the passenger accommodation of battery-driven car.
Background technology
Early stage pure electric vehicle air conditioning system mainly is made up of two parts, be electric air-conditioning compressor and gasoline car air conditioning pipe system, because pure electric automobile is only used motor-driven, therefore cancelled the engine system of former automobile, the compressor that former automobile uses is not suitable for pure electric automobile, in order to solve pure electric automobile operator's compartment in summer driver and crew's nice and cool demand, simultaneously in order to reduce the design effort amount, the mode that generally adopts motor driven compressor to replace former gasoline car compressor and continue to use the vent line system of former gasoline car HVAC system realizes cold wind demand in summer, as shown in Figure 1.
As shown in Figure 2, compressor and HVAC system connectivity, principle of work to the passenger accommodation of battery-driven car refrigeration is: working power provides operating voltage to air-conditioner controller when air conditioning switch is closed, air-conditioner controller sends first high level to entire car controller, entire car controller is given high-voltage relay according to this first high level output energizing signal, the high-voltage relay adhesive, and electrokinetic cell provides electrical source of power to air-conditioner controller, air-conditioner controller control compressor operating is to the passenger accommodation refrigeration of battery-driven car.
Along with the pure electric vehicle technology is constantly ripe, the designer finds that gradually electrokinetic cell that the battery box lining puts is bigger in the temperature rise in summer, and especially temperature rise inequality has a strong impact on battery in-use performance and life-span.In order to solve battery heat dissipation problem in summer, the research staff finds out various terms of settlement, increase radiator fan etc. in thermovent (comprising ventilation inlet and air outlet) and the Battery case such as increasing at Battery case, though these methods can be alleviated the battery problem of temperature rise, all have open defect:
The scheme that increases thermovent (comprising ventilation inlet and air outlet) on the Battery case belongs to passive heat radiation, fully by wind-cooling heat dissipating in the vehicle driving process, one of shortcoming of this kind scheme is classification of waterproof not high (can accomplish IP55 at present), can't satisfy the battery-driven car requirement of paddling, two of shortcoming is that radiating effect depends primarily on external temperature, and is especially undesirable at hot city this kind radiating effect.
The method that increases radiator fan in the Battery case belongs to active heat removal, can realize higher classification of waterproof (can accomplish IP67 at present), can satisfy the requirement of paddling, because the wind that fan provides does not belong to cold wind, this kind scheme shortcoming is that heat radiation is slow.
Summary of the invention
The purpose of this invention is to provide a kind of air conditioning system for electric car and control method thereof, if the temperature of electrokinetic cell is too high when air conditioning switch is closed, not only can the passenger accommodation refrigeration of battery-driven car can also be freezed to the battery box that is used for the placement electrokinetic cell in the battery-driven car.
To achieve these goals, the invention provides a kind of air conditioning system for electric car, comprise working power, electrokinetic cell, high-voltage relay, entire car controller, air conditioning switch, air-conditioner controller, compressor and HVAC system, the negative pole of described working power connects the second operating voltage input end (a1 ') of described entire car controller, the second operating voltage input end (d2) of described air-conditioner controller, the positive pole of described working power connects the first operating voltage input end (a1) of described entire car controller and connects the 3rd operating voltage input end (d3) of described air-conditioner controller by described air conditioning switch, and described working power is used for operating voltage being provided and providing operating voltage to described air-conditioner controller when the described air conditioning switch conducting to described entire car controller;
The first switching value mouth (f1) of described air-conditioner controller connects the 3rd input end (a3) of described entire car controller, is used for exporting first high level to described entire car controller in described working power when described air-conditioner controller provides operating voltage;
The energizing signal mouth (b1) of described entire car controller connects described high-voltage relay, and described entire car controller is given described high-voltage relay, described high-voltage relay adhesive according to described first high level output energizing signal;
The positive pole of described electrokinetic cell connects the first electrical source of power input end (c1) of described air-conditioner controller and the second electrical source of power input end (c2) that negative pole connects described air-conditioner controller by described high-voltage relay, and being used for providing electrical source of power to described air-conditioner controller when described high-voltage relay adhesive;
The control end of described air-conditioner controller connects described compressor, is used for controlling when providing electrical source of power described compressor operating;
It is characterized in that: also comprise the temperature of powered cell sensor, the first two-port valve controller, first two-port valve (3), the second two-port valve controller and second two-port valve (6), the positive pole of wherein said electrokinetic cell connects the first electrical source of power input end (e1) of the described first two-port valve controller respectively by described high-voltage relay, the first electrical source of power input end (g1) of the described second two-port valve controller, and negative pole connects the second electrical source of power input end (e2) of the described first two-port valve controller respectively, the second electrical source of power input end (g2) of the described second two-port valve controller is used for when described high-voltage relay adhesive respectively to the described first two-port valve controller, the described second two-port valve controller provides electrical source of power;
First control end (b2) of described entire car controller connects the 3rd input end (e3) of the described first two-port valve controller, the control end of the described first two-port valve controller connects described first two-port valve, first high level that described entire car controller provides according to described air-conditioner controller is exported first analog quantity to the described first two-port valve controller, the described first two-port valve controller is providing the aperture of controlling described first two-port valve under the prerequisite of electrical source of power according to described first analog quantity, and wherein said first analog quantity is the non-zero analog quantity;
The mouth of described temperature of powered cell sensor connects second input end (a2) of described entire car controller, be used for to gather the temperature information of described electrokinetic cell and the temperature signal of correspondence is sent to described entire car controller;
Second control end (b4) of described entire car controller connects the 3rd input end (g3) of the described second two-port valve controller, the control end of the described second two-port valve controller connects described second two-port valve, described entire car controller judges according to described temperature signal whether the temperature of described electrokinetic cell is too high: if judge that the temperature of described electrokinetic cell is too high then export second analog quantity and give the described second two-port valve controller, the described second two-port valve controller is providing the aperture of controlling described second two-port valve under the prerequisite of electrical source of power according to the size of described second analog quantity, and wherein said second analog quantity is the non-zero analog quantity;
The outlet side of described compressor connects the air inlet valve of described first two-port valve (3) and second two-port valve (6) respectively by pipeline (2), and the air outlet valve of described first two-port valve (3) connects described HVAC system and described second two-port valve (6) by pipeline (4) air outlet valve connects the battery box (8) that is used for placing electrokinetic cell by pipeline (7): described compressor and described HVAC system connectivity when described first two-port valve is opened, passenger accommodation refrigeration to battery-driven car, described compressor was communicated with described battery box when described second two-port valve was opened, to the battery box refrigeration of battery-driven car.
The 3rd mouth (b3) of described entire car controller connects the first operating voltage input end (d1) of described air-conditioner controller, and described entire car controller provides operating voltage to described air-conditioner controller when too high not receiving first high level that described air-conditioner controller provides and the temperature of judging described electrokinetic cell;
The second switch amount mouth (f2) of described air-conditioner controller connects the four-input terminal (a4) of described entire car controller, is used for exporting second high level to described entire car controller at described entire car controller when described air-conditioner controller provides operating voltage;
The energizing signal mouth (b1) of described entire car controller connects described high-voltage relay, is used for giving described high-voltage relay, described high-voltage relay adhesive according to described second level output energizing signal.
In sum, owing to adopted technique scheme, the invention has the beneficial effects as follows:
1, the present invention has increased by two electric two-way valves: first two-port valve and second two-port valve are respectively applied to control the conducting of compressor and HVAC system and battery box, not only can be to the passenger accommodation refrigeration of battery-driven car when air conditioning switch is closed, can also freeze to battery box, and when air conditioning switch disconnects only to battery box refrigeration, thereby under the prerequisite that does not influence the passenger accommodation refrigeration, realized the quick heat radiating of electrokinetic cell;
2, than the scheme that increases inlet and outlet at Battery case, the higher classification of waterproof of the easier realization of the present invention, and need not do extra processing at Battery case, and can reduce and increase the air channel and increase extra windage;
3, than with battery box in increase the scheme of fan, this patent easier realization battery quick heat radiating and through engineering approaches demand, through verification experimental verification, battery temperature is down to 45 ℃ from 55 ℃, this patent is compared with the scheme of increase fan in the battery box, and the heat radiation time shortens 70%.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the pipeline connection diagram of traditional electrical motor-car refrigerated air-conditioning system;
Fig. 2 is the circuit diagram of traditional electrical motor-car a/c system;
Fig. 3 is the pipeline connection diagram of air conditioning system for electric car among the present invention;
Fig. 4 is the circuit diagram of air conditioning system for electric car among the present invention;
Fig. 5 is the diagram of circuit of control step when air conditioning switch is closed in the control method of air conditioning system for electric car among the present invention;
Fig. 6 is the diagram of circuit of control step when air conditioning switch disconnects in the control method of air conditioning system for electric car among the present invention.
The specific embodiment
Disclosed all features in this specification sheets, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
As shown in Figure 3, this air conditioning system for electric car has increased by two two-port valves: first two-port valve 3 and second two-port valve 6, the outlet side of compressor 1 connects the air inlet valve of first two-port valve 3 and second two-port valve 6 respectively by pipeline 2, the air outlet valve of first two-port valve 3 connects the HVAC (Heating of system by pipeline 4, Ventilating and Air Conditioning, heating ventilation air-conditioning system), the air outlet valve of second two-port valve 6 connects the battery box 8 that is used for placing electrokinetic cell etc. by pipeline 7.When the user opened the air conditioning switch refrigeration, first two-port valve 3 and second two-port valve 6 all moved if the temperature of battery box 8 is too high, and passenger accommodation and the battery box 8 to battery-driven car freezes respectively; When the user did not open the air conditioning switch refrigeration, first two-port valve 3 was failure to actuate if the temperature of battery box 8 is too high, 6 actions of second two-port valve, and only to battery box 8 refrigeration, thereby the temperature in the reduction battery box 8 reaches good heat radiation purpose.Above-mentioned first two-port valve and second two-port valve are electric two-way valve.
In the first embodiment of the present invention, as shown in Figure 4, this air conditioning system for electric car comprises+working power of 12V, electrokinetic cell, high-voltage relay, entire car controller, air conditioning switch, air-conditioner controller, compressor, the HVAC system, the temperature of powered cell sensor, the first two-port valve controller, first two-port valve, the second two-port valve controller and second two-port valve, wherein the negative pole of working power connects the second operating voltage input end a1 ' of entire car controller respectively, the second operating voltage input end d2 of air-conditioner controller, the positive pole of working power connects the operating voltage input end a1 of entire car controller and the 3rd operating voltage input end d3 by air conditioning switch (being manual A/C switch) connection air-conditioner controller, and working power provides operating voltage and provides operating voltage such as+12V to air-conditioner controller when the air conditioning switch conducting to entire car controller.
The positive pole of electrokinetic cell connects the first electrical source of power input end c1 of air-conditioner controller, the first electrical source of power input end e1 of the first two-port valve controller and the first electrical source of power input end g1 of the second two-port valve controller respectively by high-voltage relay, and the negative pole of electrokinetic cell connects the second electrical source of power input end c2 of air-conditioner controller, the second electrical source of power input end e2 of the first two-port valve controller and the second electrical source of power input end g2 of the second two-port valve controller respectively.Electrokinetic cell provides electrical source of power to air-conditioner controller, the first two-port valve controller and the second two-port valve controller respectively when the high-voltage relay adhesive.
The first switching value Ausgang 1 of air-conditioner controller connects the 3rd input end a3 of entire car controller, and air-conditioner controller is exported first high level to entire car controller when working power provides working power to air-conditioner controller.The first switching value Ausgang 1 is only exported two value 0V or 12V in the present embodiment, and wherein 12V is first high level; 0V is low level.
The 3rd input end e3 that the energizing signal mouth b1 connection high-voltage relay of entire car controller and the first control end b2 connect the first two-port valve controller, the control end of this first two-port valve controller connects first two-port valve.First high level that this entire car controller provides according to air-conditioner controller is exported energizing signal to high-voltage relay, the high-voltage relay adhesive, electrokinetic cell can provide electrical source of power to air-conditioner controller, the first two-port valve controller and the second two-port valve controller respectively; And entire car controller is exported first analog quantity and is given the first two-port valve controller, and the first two-port valve controller is providing the aperture of controlling first two-port valve under the prerequisite of electrical source of power according to the size of first analog quantity.The value of first analog quantity is the non-zero analog quantity in the present embodiment, for greater than 0 and be less than or equal to the value of 5V.
The mouth of temperature of powered cell sensor connects the second input end a2 of entire car controller, is used for gathering the temperature information of electrokinetic cell and the temperature signal of correspondence is sent to entire car controller.The temperature signal that present embodiment medium power battery temperature sensor sends to entire car controller is the value of 0~5V, represents that when 0 V≤temperature signal<4V the temperature of electrokinetic cell is normal and represent that the temperature of electrokinetic cell is too high when 4V≤temperature signal≤5V.
The second control level mouth b4 of entire car controller connects the 3rd input end g3 of the second two-port valve controller, and the control end of the second two-port valve controller connects second two-port valve.Entire car controller judges according to this temperature signal whether the temperature of electrokinetic cell is too high: if judge that the temperature of electrokinetic cell is too high, then export second analog quantity and give the second two-port valve controller, the second two-port valve controller is providing the aperture of controlling second two-port valve under the prerequisite of electrical source of power according to the size of second analog quantity, wherein second analog quantity is the non-zero analog quantity, for greater than 0V and be less than or equal to the value of 5V; If the temperature of judging electrokinetic cell normally then export 0V and give the second two-port valve controller, the second two-port valve controller is failure to actuate.
The outlet side of compressor connects the air inlet valve of first two-port valve 3 and second two-port valve 6 respectively by pipeline 2, the air outlet valve of first two-port valve 3 connects the HVAC system by pipeline 4, the air outlet valve of second two-port valve 6 connects the battery box 8 that is used for placing electrokinetic cell etc. by pipeline 7, as shown in Figure 3.Compressor and HVAC system connectivity when first two-port valve is opened are to the passenger accommodation refrigeration of battery-driven car; Compressor is communicated with battery box when second two-port valve is opened, to the battery box refrigeration of battery-driven car.
The 3rd mouth b3 of entire car controller connects the first operating voltage input end d1 of air-conditioner controller, when not conducting of air conditioning switch, the 3rd input end a3 that is entire car controller does not receive first high level that air-conditioner controller provides, and when judging that according to the temperature signal of electrokinetic cell the temperature of electrokinetic cell is too high, entire car controller provides operating voltage to air-conditioner controller.
The second switch amount Ausgang 2 of air-conditioner controller connects the four-input terminal a4 of entire car controller, is used for exporting second high level to entire car controller when air-conditioner controller provides operating voltage at entire car controller.
The energizing signal mouth b1 of entire car controller connects high-voltage relay, is used for giving high-voltage relay, high-voltage relay adhesive according to second level output energizing signal.
Control step when the control step the when control method of this air conditioning system for electric car comprises the air conditioning switch closure among the present invention and air conditioning switch disconnect.
Control step when air conditioning switch is closed is made up of following steps as shown in Figure 5:
Working power provided+operating voltage of 12V to air-conditioner controller when S1, air conditioning switch were closed;
S2, first high level of the first switching value Ausgang, 1 transmission such as the 12V of described air-conditioner controller is to the 3rd input end a3 of entire car controller, described entire car controller is according to described first high level, energizing signal by energizing signal mouth b1 output such as 12V is given high-voltage relay, trigger described high-voltage relay adhesive, electrokinetic cell is respectively to described air-conditioner controller, the first two-port valve controller provides electrical source of power, described air-conditioner controller is controlled described compressor operating, and described entire car controller is according to described first high level, export the 3rd input end e3 that first analog quantity (for nonzero value) is given the described first two-port valve controller by the first control end b2, the described first two-port valve controller is providing the aperture of controlling described first two-port valve under the prerequisite of electrical source of power according to the size of described first analog quantity, described compressor and HVAC system connectivity are to the passenger accommodation refrigeration of battery-driven car;
S3, the temperature of powered cell sensor is gathered the temperature information of described electrokinetic cell, and the temperature signal of correspondence is sent to the second input end a2 of described entire car controller, described entire car controller judges according to described temperature signal whether the temperature of described electrokinetic cell is too high, the value of temperature signal is 0~5V in the present embodiment, represent when 0 V≤temperature signal<4V that wherein the temperature of electrokinetic cell is normal and represent that the temperature of electrokinetic cell is too high when 4V≤temperature signal≤5V: if judgement 4V≤temperature signal≤5V, the temperature that is described electrokinetic cell is too high, then the second control end b4 of described entire car controller exports the 3rd input end g3 that second analog quantity is given the second two-port valve controller, the described second two-port valve controller is providing the aperture of controlling described second two-port valve under the prerequisite of electrical source of power according to the size of described second analog quantity, described compressor is communicated with the battery box that is used for the described electrokinetic cell of placement, to the battery box refrigeration of battery-driven car, wherein said first analog quantity and second analog quantity are the non-zero analog quantity; If judge 0 V≤temperature signal<4V, namely the temperature of electrokinetic cell is normal, and then the second control end b4 of entire car controller output 0V gives the 3rd input end g3 of the second two-port valve controller, and the second two-port valve controller is failure to actuate.
Control step when air conditioning switch disconnects is made up of following steps as shown in Figure 6:
S4, the 3rd input end a3 of described entire car controller did not receive first high level that described air-conditioner controller provides when air conditioning switch disconnected, if described entire car controller according to the temperature signal of described electrokinetic cell judge the temperature of described electrokinetic cell too high (be 4V≤temperature signal≤5V), then the 3rd mouth b3 output services voltage of described entire car controller is given the first voltage input end d1 of described air-conditioner controller, provide operating voltage by described entire car controller to described air-conditioner controller, and second control end (b4) of described entire car controller output, second analog quantity is given the 3rd input end e3 of the described second two-port valve controller, and wherein said second analog quantity is the non-zero analog quantity; Normal (be 0V≤temperature signal<4V), then the 3rd mouth b3 of entire car controller can output services voltage give the first voltage input end d1 of described air-conditioner controller if described entire car controller is judged the temperature of described electrokinetic cell according to the temperature signal of described electrokinetic cell.
S5, when providing operating voltage by described entire car controller to described air-conditioner controller, second high level of second switch amount Ausgang 2 output such as the 12V of described air-conditioner controller is given the four-input terminal a4 of described entire car controller, described entire car controller is according to described second high level, give described high-voltage relay by energizing signal mouth b1 output energizing signal, trigger described high-voltage relay adhesive, described electrokinetic cell is respectively to described air-conditioner controller, the described first two-port valve controller and the second two-port valve controller provide electrical source of power, under the effect of described electrical source of power, described air-conditioner controller is controlled described compressor operating and the described second two-port valve controller are controlled described second two-port valve according to described second analog signal aperture, described compressor is communicated with described battery box, and only the battery box to battery-driven car freezes.
Comprise that also described air conditioning switch is converted to the control step of closure state from off-state in control step when described air conditioning switch disconnects:
S6, described air conditioning switch provide working power by described working power to described air-conditioner controller after converting closure state to from off-state;
S7, the first switching value Ausgang, 1 output, first high level of described air-conditioner controller is to the 3rd mouth a3 of described entire car controller when providing operating voltage by described working power to described air-conditioner controller, described entire car controller is according to described first high level, export the 3rd input end e3 that first analog quantity is given the described first two-port valve controller by its first control end b2, the described first two-port valve controller is providing the aperture of controlling described first two-port valve under the prerequisite of electrical source of power according to the size of described first analog quantity, described compressor and described HVAC system connectivity, to described HVAC system refrigeration, wherein said first analog quantity is the non-zero analog quantity.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims (2)

1. air conditioning system for electric car, comprise working power, electrokinetic cell, high-voltage relay, entire car controller, air conditioning switch, air-conditioner controller, compressor (1) and HVAC system (5), the negative pole of described working power connects the second operating voltage input end (a1 ') of described entire car controller, the second operating voltage input end (d2) of described air-conditioner controller, the positive pole of described working power connects the first operating voltage input end (a1) of described entire car controller and connects the 3rd operating voltage input end (d3) of described air-conditioner controller by described air conditioning switch, and described working power is used for operating voltage being provided and providing operating voltage to described air-conditioner controller when the described air conditioning switch conducting to described entire car controller;
The first switching value mouth (f1) of described air-conditioner controller connects the 3rd input end (a3) of described entire car controller, is used for exporting first high level to described entire car controller in described working power when described air-conditioner controller provides operating voltage;
The energizing signal mouth (b1) of described entire car controller connects described high-voltage relay, and described entire car controller is given described high-voltage relay, described high-voltage relay adhesive according to described first high level output energizing signal;
The positive pole of described electrokinetic cell connects the first electrical source of power input end (c1) of described air-conditioner controller and the second electrical source of power input end (c2) that negative pole connects described air-conditioner controller by described high-voltage relay, and being used for providing electrical source of power to described air-conditioner controller when described high-voltage relay adhesive;
The control end of described air-conditioner controller connects described compressor, is used for controlling when providing electrical source of power described compressor operating;
It is characterized in that: also comprise the temperature of powered cell sensor, the first two-port valve controller, first two-port valve (3), the second two-port valve controller and second two-port valve (6), the positive pole of wherein said electrokinetic cell connects the first electrical source of power input end (e1) of the described first two-port valve controller respectively by described high-voltage relay, the first electrical source of power input end (g1) of the described second two-port valve controller, and negative pole connects the second electrical source of power input end (e2) of the described first two-port valve controller respectively, the second electrical source of power input end (g2) of the described second two-port valve controller is used for when described high-voltage relay adhesive respectively to the described first two-port valve controller, the described second two-port valve controller provides electrical source of power;
First control end (b2) of described entire car controller connects the 3rd input end (e3) of the described first two-port valve controller, the control end of the described first two-port valve controller connects described first two-port valve, first high level that described entire car controller provides according to described air-conditioner controller is exported first analog quantity to the described first two-port valve controller, the described first two-port valve controller is providing the aperture of controlling described first two-port valve under the prerequisite of electrical source of power according to described first analog quantity, and wherein said first analog quantity is the non-zero analog quantity;
The mouth of described temperature of powered cell sensor connects second input end (a2) of described entire car controller, be used for to gather the temperature information of described electrokinetic cell and the temperature signal of correspondence is sent to described entire car controller;
Second control end (b4) of described entire car controller connects the 3rd input end (g3) of the described second two-port valve controller, the control end of the described second two-port valve controller connects described second two-port valve, described entire car controller judges according to described temperature signal whether the temperature of described electrokinetic cell is too high: if judge that the temperature of described electrokinetic cell is too high then export second analog quantity and give the described second two-port valve controller, the described second two-port valve controller is providing the aperture of controlling described second two-port valve under the prerequisite of electrical source of power according to the size of described second analog quantity, and wherein said second analog quantity is the non-zero analog quantity;
The outlet side of described compressor connects the air inlet valve of described first two-port valve (3) and second two-port valve (6) respectively by pipeline (2), and the air outlet valve of described first two-port valve (3) connects described HVAC system and described second two-port valve (6) by pipeline (4) air outlet valve connects the battery box (8) that is used for placing electrokinetic cell by pipeline (7): described compressor and described HVAC system connectivity when described first two-port valve is opened, passenger accommodation refrigeration to battery-driven car, described compressor was communicated with described battery box when described second two-port valve was opened, to the battery box refrigeration of battery-driven car.
2. air conditioning system for electric car according to claim 1, it is characterized in that: the 3rd mouth (b3) of described entire car controller connects the first operating voltage input end (d1) of described air-conditioner controller, and described entire car controller provides operating voltage to described air-conditioner controller when too high not receiving first high level that described air-conditioner controller provides and the temperature of judging described electrokinetic cell;
The second switch amount mouth (f2) of described air-conditioner controller connects the four-input terminal (a4) of described entire car controller, is used for exporting second high level to described entire car controller at described entire car controller when described air-conditioner controller provides operating voltage;
The energizing signal mouth (b1) of described entire car controller connects described high-voltage relay, is used for giving described high-voltage relay, described high-voltage relay adhesive according to described second level output energizing signal.
CN 201110425906 2011-12-19 2011-12-19 Air-conditioning system for electric vehicle Expired - Fee Related CN102501744B (en)

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CN102795076B (en) * 2012-09-06 2014-12-10 上海中科深江电动车辆有限公司 Cooling device of vehicle-mounted energy storage system

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