CN103644617B - The control method of pure electric automobile double evaporators air conditioning system - Google Patents
The control method of pure electric automobile double evaporators air conditioning system Download PDFInfo
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- CN103644617B CN103644617B CN201310751248.7A CN201310751248A CN103644617B CN 103644617 B CN103644617 B CN 103644617B CN 201310751248 A CN201310751248 A CN 201310751248A CN 103644617 B CN103644617 B CN 103644617B
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Abstract
The invention discloses a kind of pure electric automobile double evaporators air conditioning system and control method thereof, system includes the first pipeline, the second pipeline, the 3rd pipeline, compressor, condenser, reservoir, the first electromagnetic valve, battery evaporator assembly, the second electromagnetic valve, A/C evaporator assembly and air-conditioner controller；One end of first pipeline connects the outlet of compressor, and the condensed device of the other end connects the entrance of reservoir；One end of second pipeline connects the outlet of reservoir, and the other end sequentially connects the entrance of compressor through the first electromagnetic valve and battery evaporator assembly；One end of 3rd pipeline connects the entrance of reservoir, and the other end sequentially connects the entrance of compressor through the second electromagnetic valve and A/C evaporator assembly；Air-conditioner controller electrically connects with compressor, the first electromagnetic valve and the second electromagnetic valve respectively.The application present invention can be crew module and battery flat refrigeration cool-down simultaneously, solves crew module's comfortableness problem and battery thermal management problem.
Description
Technical field
The present invention relates to automobile air conditioning technology field, particularly relate to a kind of pure electric automobile double evaporators empty
The control method of adjusting system.
Background technology
Along with the continuous consumption of the energy, greenhouse effect increasingly serious, the many Automobile Enterprises in the whole world are all
Participate in the research and development of electric motor car at the bigger energy of input, pure electric automobile technology is considered as following electronic
One of important trend such as development of automobile.
Owing to pure electric automobile uses electrokinetic cell as energy source, nowadays electrokinetic cell composition is main
For LiFePO4 or ternary material, it is in charge and discharge process, especially when high current charge-discharge, and electricity
Pond itself can produce temperature rise, and then affects battery performance.Battery thermal management many employings water the most both at home and abroad
Cold or air-cooled realization, but water-cooled development cost is high, and air-cooled heat management efficiency is low, and does not has a kind of air-conditioning
System can be simultaneously crew module and battery flat refrigeration, more do not have a kind of air conditioning system can from energy-conservation with
Control Angle ambiguity crew module and the refrigeration of battery flat optimized.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of pure electric automobile is double
The control method of vaporizer air conditioning system.
For achieving the above object, the technical scheme is that
A kind of pure electric automobile double evaporators air conditioning system, described air conditioning system include the first pipeline, the
Two pipelines, the 3rd pipeline, compressor, condenser, reservoir, the first electromagnetic valve, battery vaporizer
Assembly, the second electromagnetic valve, A/C evaporator assembly and air-conditioner controller, wherein,
One end of described first pipeline connects the outlet of described compressor, and the other end is through described condenser
Connect the entrance of described reservoir；
One end of described second pipeline connects the outlet of described reservoir, and the other end is sequentially through described
First electromagnetic valve and battery evaporator assembly connect the entrance of described compressor；
One end of described 3rd pipeline connects the outlet of described reservoir, and the other end is sequentially through described
Second electromagnetic valve and A/C evaporator assembly connect the entrance of described compressor；
Described air-conditioner controller electrically connects with described compressor, the first electromagnetic valve and the second electromagnetic valve respectively
。
Preferably, described battery evaporator assembly includes be sequentially connected with by described second pipeline
One expansion valve and battery vaporizer, described A/C evaporator assembly includes by described 3rd pipeline sequentially
The second expansion valve connected and A/C evaporator.
Preferably, described air conditioning system also includes: for detecting the of the pressure of described second pipeline
One pressure transducer, and for detecting the second pressure transducer of the pressure of described 3rd pipeline, institute
State air-conditioner controller to electrically connect with described first pressure transducer and the second pressure transducer respectively.
A kind of control method of pure electric automobile double evaporators air conditioning system, wherein:
Described air conditioning system include the first pipeline, the second pipeline, the 3rd pipeline, compressor, condenser,
Reservoir, the first electromagnetic valve, battery evaporator assembly, the second electromagnetic valve, A/C evaporator assembly and
Air-conditioner controller, wherein,
One end of described first pipeline connects the outlet of described compressor, and the other end is through described condenser
Connect the entrance of described reservoir；
One end of described second pipeline connects the outlet of described reservoir, and the other end is sequentially through described
First electromagnetic valve and battery evaporator assembly connect the entrance of described compressor；
One end of described 3rd pipeline connects the outlet of described reservoir, and the other end is sequentially through described
Second electromagnetic valve and A/C evaporator assembly connect the entrance of described compressor；
Described air-conditioner controller electrically connects with described compressor, the first electromagnetic valve and the second electromagnetic valve respectively；
Described method includes:
Judge whether crew module and battery flat exist refrigeration demand；
If only crew module exists refrigeration demand, the most described air-conditioner controller controls described second electromagnetic valve
Adhesive, and after the first time period set, steam according to the vehicle interior temperature got and described air-conditioning
Send out compressor described in the surface temperature control of A/C evaporator in device assembly to run with the first rotating speed, described
First rotating speed is in first range of speeds；
If only battery flat exists refrigeration demand, the most described air-conditioner controller controls described first electromagnetic valve
Adhesive, and after the first time period, according to the internal temperature of the battery flat got and described
In battery evaporator assembly, described in the surface temperature control of battery vaporizer, compressor is transported with the second rotating speed
OK, described second rotating speed is in second range of speeds；
If crew module and battery flat all exist refrigeration demand, the most described air-conditioner controller controls described the
One electromagnetic valve and the equal adhesive of the second electromagnetic valve, and after the first time period, according to get
Compressor described in the surface temperature control of A/C evaporator in vehicle interior temperature and described A/C evaporator assembly
Running with the 3rd rotating speed, described 3rd rotating speed is in the 3rd range of speeds.
Preferably, described judge whether battery flat exists refrigeration demand and include:
Obtain the internal temperature of battery flat；
Battery management unit judges that whether the internal temperature of described battery flat is more than the battery flat temperature set
Threshold value；
If it is, described battery management unit sends battery flat refrigeration demand to described air-conditioner controller
Signal.
Preferably, described method also includes:
When described first electromagnetic valve and the second electromagnetic valve are in attracting state, it may be judged whether cancel and take advantage of
The refrigeration demand in member cabin or the refrigeration demand of battery flat；
If only cancelling the refrigeration demand of crew module, and battery flat still suffering from refrigeration demand, the most described sky
Adjust controller to control the second electromagnetic valve to disconnect, control described first electromagnetic valve and keep attracting state, and control
Make described compressor to run with described second rotating speed；
If only cancelling the refrigeration demand of battery flat, and crew module still suffering from refrigeration demand, the most described sky
Adjust controller to control the first electromagnetic valve to disconnect, control described second electromagnetic valve and keep attracting state, and control
Make described compressor to run with described first rotating speed；
If cancelling the refrigeration demand of crew module and battery flat, the most described air-conditioner controller controls described pressure
Contracting machine is out of service, and described air-conditioner controller controls described first after the second time period set
Electromagnetic valve and the second electromagnetic valve all disconnect.
Preferably, described method also includes:
Obtain described first electromagnetic valve and the state of the second electromagnetic valve；
When described first electromagnetic valve is off, and when the second electromagnetic valve is in attracting state, institute
State air-conditioner controller and judge the surface temperature of A/C evaporator in the described A/C evaporator assembly got
Whether less than the frosting temperature threshold set, if it is, described air-conditioner controller controls described compression
Machine is out of service；Then, determine, when described air-conditioner controller, the described A/C evaporator assembly got
The surface temperature of middle A/C evaporator is persistently more than the solution frost temperature set within the 3rd time period set
During threshold value, described air-conditioner controller controls described compressor and runs with described first rotating speed；
When described second electromagnetic valve is off, and when the first electromagnetic valve is in attracting state, institute
State air-conditioner controller and judge the surface temperature of battery vaporizer in the described battery evaporator assembly got
Whether less than described frosting temperature threshold, if it is, described air-conditioner controller controls described compressor
Out of service；Then, in described air-conditioner controller determines the described battery evaporator assembly got
The surface temperature of battery vaporizer persistently solves frost temperature threshold more than described within described 3rd time period
Time, described air-conditioner controller controls described compressor and runs with described second rotating speed；
When described first electromagnetic valve and the second electromagnetic valve are in attracting state, described air-conditioner controller
Judge that surface temperature and the described air-conditioning of battery vaporizer in the described battery evaporator assembly got steam
Send out the magnitude relationship of the surface temperature of A/C evaporator and described frosting temperature threshold in device assembly:
If both of which is less than described frosting temperature threshold, the most described air-conditioner controller controls described compression
Machine is out of service, and controls described first electromagnetic valve and the second electromagnetic valve all disconnects, then: when described
Air-conditioner controller determines the surface temperature of A/C evaporator in the described A/C evaporator assembly only got
When degree is persistently more than described solution frost temperature threshold within described 3rd time period, described air-conditioner controller control
Make described second electromagnetic valve adhesive and control described compressor and run with the first rotating speed；When described air-conditioning control
Device processed determines that in the described battery evaporator assembly only got, the surface temperature of battery vaporizer is in institute
When being persistently more than described solution frost temperature threshold in stating for the 3rd time period, described air-conditioner controller controls described
First electromagnetic valve adhesive also controls described compressor with described second rotating speed operation；When described airconditioning control
Device determines battery vaporizer and described battery evaporator assembly in the described battery evaporator assembly got
The surface temperature of middle battery vaporizer all persistently solves frost temperature threshold more than described within described 3rd time period
During value, described air-conditioner controller controls described first electromagnetic valve and the second electromagnetic valve adhesive and controls described
Compressor runs with described 3rd rotating speed；
If the surface temperature of battery vaporizer is less than described frosting in the most described battery evaporator assembly
Temperature threshold, the most described air-conditioner controller controls described first electromagnetic valve and disconnects, then, when described sky
Controller is adjusted to determine that in the described battery evaporator assembly got, the surface temperature of battery vaporizer is in institute
When being persistently more than described solution frost temperature threshold in stating for the 3rd time period, described air-conditioner controller controls described
First electromagnetic valve adhesive；
If the surface temperature of A/C evaporator is less than described frosting in the most described A/C evaporator assembly
Temperature threshold, the most described air-conditioner controller controls described second electromagnetic valve and disconnects, then, when described sky
Controller is adjusted to determine that in the described A/C evaporator assembly got, the surface temperature of A/C evaporator is in institute
When being persistently more than described solution frost temperature threshold in stating for the 3rd time period, described air-conditioner controller controls described
Second electromagnetic valve adhesive.
Preferably, described method also includes:
Battery vaporizer place pipeline in described battery evaporator assembly is obtained according to the sampling period set
The first pressure；
A/C evaporator place pipeline in described A/C evaporator assembly is obtained according to the described sampling period
Second pressure；
Described air-conditioner controller judges described first pressure, the second pressure and the low pressure limit of setting, pressure
Limit and the magnitude relationship of upper pressure limit in power, in described low pressure limit, pressure, limit and upper pressure limit are from little
To big sequentially arrangement:
If described first pressure is less than described low pressure limit, or described first pressure is more than described pressure
The power upper limit, or described second pressure is less than described low pressure limit, or described second pressure is more than institute
Stating upper pressure limit, it is out of service that the most described air-conditioner controller controls described compressor；
If described first pressure is more than or equal to limiting in the pressure set and less than or equal on described pressure
Limit, or described second pressure is more than or equal to limiting in described pressure and less than or equal to described upper pressure limit,
The most described air-conditioner controller controls described compressor fall-back, and the rotating speed of described compressor is existed
The regulated value of setting is reduced on the basis of current rotating speed, until described first pressure and described second pressure
Till during the pressure threshold respectively less than set, the most described air-conditioner controller controls described compressor with institute
State the 3rd rotating speed to run.
Preferably, the lower limit of described first range of speeds, the lower limit of second range of speeds and the 3rd turn
The lower limit of speed scope is identical, the upper limit of described second range of speeds, the upper limit of first range of speeds and the
The upper limit of three ranges of speeds is sequentially arranged from little to big.
Preferably, the lower limit of described first range of speeds, the lower limit of second range of speeds and the 3rd turn
The lower limit of speed scope is 960rpm, the upper limit of described second range of speeds, first range of speeds upper
The upper limit of limit and the 3rd range of speeds is followed successively by 2000rpm, 3450rpm and 4080rpm.
The beneficial effects of the present invention is, use pure electric automobile double evaporators air-conditioning of the present invention
System and control method thereof:
1, can be electric motor car crew module and vehicle mounted dynamic battery cabin refrigeration cool-down simultaneously, efficiently solve
The comfortableness problem of electric motor car crew module and the heat management problems of battery；
2, can according to crew module and the refrigeration demand of battery flat, and battery vaporizer and air-conditioning evaporation
The surface temperature of device, optimally controls the rotating speed of compressor, it is achieved thereby that meet crew module and battery
On the basis of the refrigeration demand in cabin, reach energy-conservation purpose, and then add the flying power of electric motor car；
3, the simple in construction of described double evaporators air conditioning system, low cost.
Accompanying drawing explanation
Fig. 1 shows the structural representation of embodiment of the present invention pure electric automobile double evaporators air conditioning system
Figure；
Fig. 2 shows the circuit theory side of embodiment of the present invention pure electric automobile double evaporators air conditioning system
Block diagram；
Fig. 3 shows the open method of embodiment of the present invention pure electric automobile double evaporators air conditioning system
Flow chart；
Fig. 4 shows the method for closing of embodiment of the present invention pure electric automobile double evaporators air conditioning system
Flow chart.
Description of reference numerals
1 compressor 62 second expansion valve
2 condenser 71 battery vaporizers
3 reservoir 72 A/C evaporators
41 first pressure transducer 8 air-conditioner controllers
42 second pressure transducer 91 first pipelines
51 first electromagnetic valve 92 second pipelines
52 second electromagnetic valve 93 the 3rd pipelines
61 first expansion valves
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, its
In the most same or similar label represent same or similar element or there is same or like merit
The element of energy.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this
Bright, and be not construed as limiting the claims.
As depicted in figs. 1 and 2, respectively embodiment of the present invention pure electric automobile double evaporators air-conditioning system
The structural representation of system and circuit block diagram, described pure electric automobile double evaporators air conditioning system bag
Include first pipeline the 91, second pipeline 92, compressor 1, condenser 2, reservoir the 3, first electromagnetism
Valve 51, battery evaporator assembly, the second electromagnetic valve 52, A/C evaporator assembly and air-conditioner controller 8.
Wherein, described battery evaporator assembly includes the first expansion valve 61 and battery vaporizer 71, described sky
Evaporator assembly is adjusted to include the second expansion valve 62 and A/C evaporator 72.
Described air-conditioner controller 8 respectively with described compressor the 1, first electromagnetic valve 51 and the second electromagnetic valve
52 electrical connections.
One end of described first pipeline 91 connects the outlet of described compressor 1, and the other end is through described cold
Condenser 2 connects the entrance of described reservoir 3.One end of described second pipeline 92 connects described reservoir
The outlet of 3, the other end sequentially steams through described first electromagnetic valve the 51, first expansion valve 61 and battery
Send out device 71 and connect the entrance of described compressor 1, described first pipeline 91, compressor 1, reservoir 3,
Second pipeline the 92, first electromagnetic valve the 51, first expansion valve 61 and battery vaporizer 71 define for
Power battery cabin is carried out the battery flat refrigeration cycle of cooling refrigeration.
One end of described 3rd pipeline 93 connects the outlet of described reservoir 3, and the other end sequentially passes through
Described second electromagnetic valve the 52, second expansion valve 62 and A/C evaporator 72 connect described compressor 1
Entrance, described first pipeline 91, compressor 1, reservoir the 3, the 3rd pipeline the 93, second electromagnetic valve
52, the second expansion valve 62 and A/C evaporator 72 define for crew module is carried out cooling refrigeration
Crew module's refrigeration cycle.
It addition, described air conditioning system also includes: for detecting the first of the pressure of described second pipeline 92
Pressure transducer 41, and for detecting the second pressure transducer of the pressure of described 3rd pipeline 93
42, described air-conditioner controller 8 respectively with described first pressure transducer 41 and the second pressure transducer
42 electrical connections.
As it is shown on figure 3, be the opening square of embodiment of the present invention pure electric automobile double evaporators air conditioning system
The flow chart of method, described open method includes:
Step 101: judge whether crew module and battery flat exist refrigeration demand.
Specifically, the refrigeration demand of crew module typically by occupant manipulate the refrigeration button arranged in car or
Refrigeration knob triggers；And judge whether battery flat exists the method for refrigeration demand and be:
By being arranged at the temperature sensor within power battery cabin, obtain the internal temperature of battery flat；
Battery management unit (BMS, Battery Management System) judges the institute got
More than the battery flat temperature threshold set, (this temperature threshold needs root to state the internal temperature of battery flat
Performance in border specifically sets factually)；
If the internal temperature of described battery flat is more than the battery flat temperature threshold set, the most described battery
Administrative unit sends battery flat refrigeration demand signal to described air-conditioner controller 8, determines that battery flat exists
Refrigeration demand.
Step 102: if only crew module exists refrigeration demand, the most described air-conditioner controller 8 controls institute
State the second electromagnetic valve 52 adhesive, and after the first time period set, according to the Che Neiwen got
Compressor 1 described in the surface temperature control of degree and described A/C evaporator 72 runs with the first rotating speed, institute
State the first rotating speed in first range of speeds.
Step 103: if only battery flat exists refrigeration demand, the most described air-conditioner controller 8 controls institute
State the first electromagnetic valve 51 adhesive, and after the first time period, according to the battery flat got
Described in the surface temperature control of internal temperature and described battery vaporizer 71, compressor 1 is transported with the second rotating speed
OK, described second rotating speed is in second range of speeds.
Step 104: if crew module and battery flat all exist refrigeration demand, the most described air-conditioner controller 8
Control described first electromagnetic valve 51 and the second equal adhesive of electromagnetic valve 52, and in described first time period
After, compress according to described in the surface temperature control of the vehicle interior temperature got and described A/C evaporator 72
Machine 1 runs with the 3rd rotating speed, and described 3rd rotating speed is in the 3rd range of speeds.
Especially, described first time period is preferably 2s.The lower limit of described first range of speeds, second
The lower limit of the range of speeds and the lower limit of the 3rd range of speeds are identical, it is preferably to for 960rpm；Described second
The upper limit of the upper limit of the range of speeds, the upper limit of first range of speeds and the 3rd range of speeds from little to the most suitable
Secondary arrangement, the upper limit of described second range of speeds, the upper limit of first range of speeds and the 3rd range of speeds
The upper limit be followed successively by 2000rpm, 3450rpm and 4080rpm.
It addition, when the internal temperature of described battery flat is more than the temperature pre-warning value set, described air-conditioning
Controller 8 controls the described compressor 1 upper limit (preferably 4080rpm) with described 3rd range of speeds
Run, as early as possible electrokinetic cell is carried out refrigeration cool-down.
Above-mentioned open method, it is possible to according to actual crew module and the refrigeration demand of battery flat, open or close
Close corresponding vaporizer, and can be according to vehicle interior temperature, the surface temperature of A/C evaporator 72, electricity
The internal temperature in cabin, pond and the surface temperature of battery vaporizer 71 specifically control compressor 1 and turn with different
Speed is run, thus reaches energy-conservation purpose while realizing meeting refrigeration demand to the full extent.
As shown in Figure 4, it is the closedown side of embodiment of the present invention pure electric automobile double evaporators air conditioning system
The flow chart of method, described method for closing includes:
Step 201: when described first electromagnetic valve 51 and the second electromagnetic valve 52 are in attracting state,
Judge whether to cancel the refrigeration demand of the refrigeration demand of crew module or battery flat.
Specifically, being similar to above-mentioned open method, cancelling of crew module's refrigeration demand is also to pass through occupant
The refrigeration button arranged in manipulation car or refrigeration knob trigger；And judge whether to cancel battery flat
The method of refrigeration demand be:
By being arranged at the temperature sensor within power battery cabin, obtain the internal temperature of battery flat；
Battery management unit (BMS, Battery Management System) judges the institute got
Whether state the internal temperature of battery flat less than battery flat lowest temperature threshold value (this temperature threshold need set
Specifically to set according to the performance in reality)；
If the internal temperature of described battery flat is less than described battery flat temperature threshold, the most described cell tube
Reason unit sends the signal cancelling battery flat refrigeration demand to described air-conditioner controller 8, determines and cancels electricity
The refrigeration demand in cabin, pond.
Step 202: if only cancelling the refrigeration demand of crew module, and battery flat still suffers from refrigeration demand,
The most described air-conditioner controller 8 controls the second electromagnetic valve 52 and disconnects, and controls described first electromagnetic valve 51 and protects
Hold attracting state, and control described compressor 1 with described second rotating speed operation.
Step 203: if only cancelling the refrigeration demand of battery flat, and crew module still suffers from refrigeration demand,
The most described air-conditioner controller 8 controls the first electromagnetic valve 51 and disconnects, and controls described second electromagnetic valve 52 and protects
Hold attracting state, and control described compressor 1 with described first rotating speed operation.
Step 204: if cancelling the refrigeration demand of crew module and battery flat, the most described air-conditioner controller 8
Control described compressor 1 out of service, and described air-conditioner controller 8 is in the second time period set
Described first electromagnetic valve 51 of rear control and the second electromagnetic valve 52 all disconnect.
Especially, described second time period is preferably 5s.
The flow chart of the Defrost method of embodiment of the present invention pure electric automobile double evaporators air conditioning system, institute
State Defrost method to include:
Step 301: obtain described first electromagnetic valve 51 and the state of the second electromagnetic valve 52.
Specifically, the first electromagnetic valve 51 is off representing that battery vaporizer 71 is in and does not works
State, the first electromagnetic valve 51 is in attracting state and represents that battery vaporizer 71 is in running order；With
Reason, the second electromagnetic valve 52 is off representing that A/C evaporator 72 is in non-duty, the
Two electromagnetic valves 52 are in attracting state and represent that A/C evaporator 72 is in running order.
Step 302: when described first electromagnetic valve 51 is off, and at the second electromagnetic valve 52
When attracting state, described air-conditioner controller 8 judges the surface of the described A/C evaporator 72 got
Whether temperature is less than the frosting temperature threshold set, if it is, described air-conditioner controller 8 controls institute
State compressor 1 out of service；Then, determine, when described air-conditioner controller 8, the described air-conditioning got
The surface temperature of vaporizer 72 is persistently more than the solution frost temperature threshold set within the 3rd time period set
During value, described air-conditioner controller 8 controls described compressor 1 and runs with described first rotating speed.
Step 303: when described second electromagnetic valve 52 is off, and at the first electromagnetic valve 51
When attracting state, described air-conditioner controller 8 judges the surface of the described battery vaporizer 71 got
Whether temperature is less than described frosting temperature threshold, if it is, described air-conditioner controller 8 controls described
Compressor 1 is out of service；Then, determine that the described battery got steams when described air-conditioner controller 8
Send out device 71 surface temperature within described 3rd time period persistently more than described solve frost temperature threshold time, institute
State air-conditioner controller 8 and control described compressor 1 with described second rotating speed operation.
Step 304: when described first electromagnetic valve 51 and the second electromagnetic valve 52 are in attracting state,
The surface temperature of the described battery vaporizer 71 that the judgement of described air-conditioner controller 8 gets and described air-conditioning
The surface temperature of vaporizer 72 and the magnitude relationship of described frosting temperature threshold:
Step 3041: if both of which is less than described frosting temperature threshold, the most described air-conditioner controller 8
Control described compressor 1 out of service, and control described first electromagnetic valve 51 and the second electromagnetic valve 52
All disconnect, then: when described air-conditioner controller 8 determines the described A/C evaporator 72 only got
Surface temperature within described 3rd time period persistently more than described solve frost temperature threshold time, described air-conditioning
Controller 8 controls described second electromagnetic valve 52 adhesive and controls described compressor 1 and transport with the first rotating speed
OK；When described air-conditioner controller 8 determines the surface temperature of the described battery vaporizer 71 only got
Time within described 3rd time period persistently more than described solution frost temperature threshold, described air-conditioner controller 8 is controlled
Make described first electromagnetic valve 51 adhesive and control described compressor 1 with described second rotating speed operation；Work as institute
State air-conditioner controller 8 and determine the described battery vaporizer 71 got and described battery vaporizer 71
When surface temperature is all persistently more than described solution frost temperature threshold within described 3rd time period, described air-conditioning
Controller 8 controls described first electromagnetic valve 51 and the second electromagnetic valve 52 adhesive and controls described compressor
1 runs with described 3rd rotating speed.
Step 3042: if the surface temperature of the most described battery vaporizer 71 is less than described frosting temperature
Degree threshold value, the most described air-conditioner controller 8 controls described first electromagnetic valve 51 and disconnects, then, when described
Air-conditioner controller 8 determines that the surface temperature of the described battery vaporizer 71 got is in described 3rd time
Time in Duan persistently more than described solution frost temperature threshold, described air-conditioner controller 8 controls described first electromagnetism
Valve 51 adhesive.
Step 3043: if the surface temperature of the most described A/C evaporator 72 is less than described frosting temperature
Degree threshold value, the most described air-conditioner controller 8 controls described second electromagnetic valve 52 and disconnects, then, when described
Air-conditioner controller 8 determines that the surface temperature of the described A/C evaporator 72 got is in described 3rd time
Time in Duan persistently more than described solution frost temperature threshold, described air-conditioner controller 8 controls described second electromagnetism
Valve 52 adhesive.
Especially, described 3rd time period is preferably 8s.Described frosting temperature threshold is preferably 0 DEG C,
The described frost temperature threshold that solves is preferably 6 DEG C.
Above-mentioned Defrost method, efficiently avoid evaporator surface frosting in process of refrigerastion affects energy and turns
The problem changed, improve to a great extent air conditioning system can conversion efficiency, reach energy-conservation mesh
's.
The flow chart of the pressure method of embodiment of the present invention pure electric automobile double evaporators air conditioning system, institute
State compress control method to include:
Step 401: obtain described according to the sampling period set by described first pressure transducer 41
First pressure of battery vaporizer 71 place pipeline (the i.e. second pipeline 92).
Step 402: obtain described sky according to the described sampling period by described second pressure transducer 42
Adjust second pressure at vaporizer 72 place pipeline (the i.e. the 3rd pipeline 93).
Step 403: first pressure corresponding for each sampling period and the second pressure, described air-conditioning
Controller 8 judges to limit and press in the low pressure limit of described first pressure, the second pressure and setting, pressure
The magnitude relationship of the power upper limit, in described low pressure limit, pressure, limit and upper pressure limit are sequentially arranged from little to big
Cloth:
Step 4031: if described first pressure is less than described low pressure limit, or described first pressure
More than described upper pressure limit, or described second pressure is less than described low pressure limit, or described second
Pressure is more than described upper pressure limit, and it is out of service that the most described air-conditioner controller 8 controls described compressor 1.
Step 4032: if described first pressure is more than or equal to limiting in the pressure set and less than or equal to institute
State upper pressure limit, or described second pressure is more than or equal to limiting in described pressure and less than or equal to described pressure
The power upper limit, the most described air-conditioner controller 8 controls described compressor 1 fall-back, and makes described pressure
The rotating speed of contracting machine 1 reduces the regulated value of setting on the basis of current rotating speed, until described first pressure
With described second pressure be respectively less than set pressure threshold time till, the most described air-conditioner controller 8 is controlled
Make described compressor 1 to run with described 3rd rotating speed.
Especially, in described low pressure limit, pressure limit and upper pressure limit successively be preferably 0.2MPa, 2
MPa and 3.2MPa, described regulated value is preferably 60rpm (corresponding 30Hz), described pressure threshold
It is preferably 1.8 ± 0.1MPa.
Above-mentioned compress control method, effectively prevent owing to loine pressure abnormal (too small or excessive) is made
Become the failure risk that air conditioning system occurs.
The structure of the present invention, feature and effect effect are described in detail above according to graphic shown embodiment
Really, the foregoing is only presently preferred embodiments of the present invention, but the present invention does not implements to limit shown in drawing
Scope, every change made according to the conception of the present invention, or it is revised as the equivalence enforcement of equivalent variations
Example, still without departing from description with diagram contained spiritual time, all should be within the scope of the present invention.
Claims (7)
1. the control method of a pure electric automobile double evaporators air conditioning system, it is characterised in that
Described air conditioning system include the first pipeline, the second pipeline, the 3rd pipeline, compressor, condenser,
Reservoir, the first electromagnetic valve, battery evaporator assembly, the second electromagnetic valve, A/C evaporator assembly and
Air-conditioner controller, wherein,
One end of described first pipeline connects the outlet of described compressor, and the other end is through described condenser
Connect the entrance of described reservoir；
One end of described second pipeline connects the outlet of described reservoir, and the other end is sequentially through described
First electromagnetic valve and battery evaporator assembly connect the entrance of described compressor；
One end of described 3rd pipeline connects the outlet of described reservoir, and the other end is sequentially through described
Second electromagnetic valve and A/C evaporator assembly connect the entrance of described compressor；
Described air-conditioner controller electrically connects with described compressor, the first electromagnetic valve and the second electromagnetic valve respectively；
Described method includes:
Judge whether crew module and battery flat exist refrigeration demand；
If only crew module exists refrigeration demand, the most described air-conditioner controller controls described second electromagnetic valve
Adhesive, and after the first time period set, steam according to the vehicle interior temperature got and described air-conditioning
Send out compressor described in the surface temperature control of A/C evaporator in device assembly to run with the first rotating speed, described
First rotating speed is in first range of speeds；
If only battery flat exists refrigeration demand, the most described air-conditioner controller controls described first electromagnetic valve
Adhesive, and after the first time period, according to the internal temperature of the battery flat got and described
In battery evaporator assembly, described in the surface temperature control of battery vaporizer, compressor is transported with the second rotating speed
OK, described second rotating speed is in second range of speeds；
If crew module and battery flat all exist refrigeration demand, the most described air-conditioner controller controls described the
One electromagnetic valve and the equal adhesive of the second electromagnetic valve, and after the first time period, according to get
Compressor described in the surface temperature control of A/C evaporator in vehicle interior temperature and described A/C evaporator assembly
Running with the 3rd rotating speed, described 3rd rotating speed is in the 3rd range of speeds.
The control method of pure electric automobile double evaporators air conditioning system the most according to claim 1, it is special
Levy and be, described judge whether battery flat exists refrigeration demand and include:
Obtain the internal temperature of battery flat；
Battery management unit judges that whether the internal temperature of described battery flat is more than the battery flat temperature set
Threshold value；
If it is, described battery management unit sends battery flat refrigeration demand to described air-conditioner controller
Signal.
The control method of pure electric automobile double evaporators air conditioning system the most according to claim 1, it is special
Levying and be, described method also includes:
When described first electromagnetic valve and the second electromagnetic valve are in attracting state, it may be judged whether cancel and take advantage of
The refrigeration demand in member cabin or the refrigeration demand of battery flat；
If only cancelling the refrigeration demand of crew module, and battery flat still suffering from refrigeration demand, the most described sky
Adjust controller to control the second electromagnetic valve to disconnect, control described first electromagnetic valve and keep attracting state, and control
Make described compressor to run with described second rotating speed；
If only cancelling the refrigeration demand of battery flat, and crew module still suffering from refrigeration demand, the most described sky
Adjust controller to control the first electromagnetic valve to disconnect, control described second electromagnetic valve and keep attracting state, and control
Make described compressor to run with described first rotating speed；
If cancelling the refrigeration demand of crew module and battery flat, the most described air-conditioner controller controls described pressure
Contracting machine is out of service, and described air-conditioner controller controls described first after the second time period set
Electromagnetic valve and the second electromagnetic valve all disconnect.
The control method of pure electric automobile double evaporators air conditioning system the most according to claim 1, it is special
Levying and be, described method also includes:
Obtain described first electromagnetic valve and the state of the second electromagnetic valve；
When described first electromagnetic valve is off, and when the second electromagnetic valve is in attracting state, institute
State air-conditioner controller and judge the surface temperature of A/C evaporator in the described A/C evaporator assembly got
Whether less than the frosting temperature threshold set, if it is, described air-conditioner controller controls described compression
Machine is out of service；Then, determine, when described air-conditioner controller, the described A/C evaporator assembly got
The surface temperature of middle A/C evaporator is persistently more than the solution frost temperature set within the 3rd time period set
During threshold value, described air-conditioner controller controls described compressor and runs with described first rotating speed；
When described second electromagnetic valve is off, and when the first electromagnetic valve is in attracting state, institute
State air-conditioner controller and judge the surface temperature of battery vaporizer in the described battery evaporator assembly got
Whether less than described frosting temperature threshold, if it is, described air-conditioner controller controls described compressor
Out of service；Then, in described air-conditioner controller determines the described battery evaporator assembly got
The surface temperature of battery vaporizer persistently solves frost temperature threshold more than described within described 3rd time period
Time, described air-conditioner controller controls described compressor and runs with described second rotating speed；
When described first electromagnetic valve and the second electromagnetic valve are in attracting state, described air-conditioner controller
Judge that surface temperature and the described air-conditioning of battery vaporizer in the described battery evaporator assembly got steam
Send out the magnitude relationship of the surface temperature of A/C evaporator and described frosting temperature threshold in device assembly:
If both of which is less than described frosting temperature threshold, the most described air-conditioner controller controls described compression
Machine is out of service, and controls described first electromagnetic valve and the second electromagnetic valve all disconnects, then: when described
Air-conditioner controller determines the surface temperature of A/C evaporator in the described A/C evaporator assembly only got
When degree is persistently more than described solution frost temperature threshold within described 3rd time period, described air-conditioner controller control
Make described second electromagnetic valve adhesive and control described compressor and run with the first rotating speed；When described air-conditioning control
Device processed determines that in the described battery evaporator assembly only got, the surface temperature of battery vaporizer is in institute
When being persistently more than described solution frost temperature threshold in stating for the 3rd time period, described air-conditioner controller controls described
First electromagnetic valve adhesive also controls described compressor with described second rotating speed operation；When described airconditioning control
Device determines battery vaporizer and described battery evaporator assembly in the described battery evaporator assembly got
The surface temperature of middle battery vaporizer all persistently solves frost temperature threshold more than described within described 3rd time period
During value, described air-conditioner controller controls described first electromagnetic valve and the second electromagnetic valve adhesive and controls described
Compressor runs with described 3rd rotating speed；
If the surface temperature of battery vaporizer is less than described frosting in the most described battery evaporator assembly
Temperature threshold, the most described air-conditioner controller controls described first electromagnetic valve and disconnects, then, when described sky
Controller is adjusted to determine that in the described battery evaporator assembly got, the surface temperature of battery vaporizer is in institute
When being persistently more than described solution frost temperature threshold in stating for the 3rd time period, described air-conditioner controller controls described
First electromagnetic valve adhesive；
If the surface temperature of A/C evaporator is less than described frosting in the most described A/C evaporator assembly
Temperature threshold, the most described air-conditioner controller controls described second electromagnetic valve and disconnects, then, when described sky
Controller is adjusted to determine that in the described A/C evaporator assembly got, the surface temperature of A/C evaporator is in institute
When being persistently more than described solution frost temperature threshold in stating for the 3rd time period, described air-conditioner controller controls described
Second electromagnetic valve adhesive.
The control method of pure electric automobile double evaporators air conditioning system the most according to claim 1, it is special
Levying and be, described method also includes:
Battery vaporizer place pipeline in described battery evaporator assembly is obtained according to the sampling period set
The first pressure；
A/C evaporator place pipeline in described A/C evaporator assembly is obtained according to the described sampling period
Second pressure；
Described air-conditioner controller judges described first pressure, the second pressure and the low pressure limit of setting, pressure
Limit and the magnitude relationship of upper pressure limit in power, in described low pressure limit, pressure, limit and upper pressure limit are from little
To big sequentially arrangement:
If described first pressure is less than described low pressure limit, or described first pressure is more than described pressure
The power upper limit, or described second pressure is less than described low pressure limit, or described second pressure is more than institute
Stating upper pressure limit, it is out of service that the most described air-conditioner controller controls described compressor；
If described first pressure is more than or equal to limiting in the pressure set and less than or equal on described pressure
Limit, or described second pressure is more than or equal to limiting in described pressure and less than or equal to described upper pressure limit,
The most described air-conditioner controller controls described compressor fall-back, and the rotating speed of described compressor is existed
The regulated value of setting is reduced on the basis of current rotating speed, until described first pressure and described second pressure
Till during the pressure threshold respectively less than set, the most described air-conditioner controller controls described compressor with institute
State the 3rd rotating speed to run.
6. according to the control of the pure electric automobile double evaporators air conditioning system described in any one of claim 1 to 5
Method, it is characterised in that the lower limit of described first range of speeds, the lower limit of second range of speeds and
The lower limit of three ranges of speeds is identical, the upper limit of described second range of speeds, the upper limit of first range of speeds
Sequentially arrange from little to big with the upper limit of the 3rd range of speeds.
The control method of pure electric automobile double evaporators air conditioning system the most according to claim 6, it is special
Levy and be, the lower limit of described first range of speeds, the lower limit of second range of speeds and the 3rd range of speeds
Lower limit be 960rpm, the upper limit of described second range of speeds, the upper limit of first range of speeds and
The upper limit of three ranges of speeds is followed successively by 2000rpm, 3450rpm and 4080rpm.
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| CN104006471A (en) * | 2014-05-30 | 2014-08-27 | 安徽江淮汽车股份有限公司 | Hybrid electric vehicle air conditioning system and control method therefor |
| CN106368939B (en) * | 2016-08-30 | 2017-09-12 | 东风柳州汽车有限公司 | Motor compressor for vehicle air conditioner method for controlling number of revolution |
| CN107336577A (en) * | 2016-12-26 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | Electric vehicle double evaporators air conditioning control method and device |
| CN108248334A (en) * | 2016-12-29 | 2018-07-06 | 长城汽车股份有限公司 | Vehicle-mounted refrigerating system, the control method of vehicle-mounted refrigerating system and vehicle |
| CN107351648B (en) * | 2017-07-20 | 2019-05-21 | 安徽江淮汽车集团股份有限公司 | A kind of double evaporators electric air-conditioning control method |
| CN109435633A (en) * | 2018-12-12 | 2019-03-08 | 江苏阿尔特空调实业有限责任公司 | A kind of double dynamical compressor air-conditioning system for plug-in hybrid-power automobile |
| FR3097310A1 (en) * | 2019-06-14 | 2020-12-18 | Valeo Systemes Thermiques | Method of managing a thermal management device for a motor vehicle and associated thermal management device. |
| CN111231769B (en) * | 2020-01-20 | 2021-07-06 | 东风汽车集团有限公司 | Electric vehicle heat management method and system |
| CN111976419B (en) * | 2020-07-06 | 2023-08-18 | 惠州市德赛西威汽车电子股份有限公司 | Refrigerating method and control system for eliminating temperature disturbance |
| CN112606654B (en) * | 2020-12-15 | 2022-03-22 | 曼德电子电器有限公司 | Control method and device, medium, equipment and system of vehicle-mounted heat pump air conditioning system |
| CN113147314B (en) * | 2021-03-11 | 2022-06-07 | 东风汽车集团股份有限公司 | New energy automobile thermal management system and automobile |
| CN115923449B (en) * | 2023-01-30 | 2024-04-19 | 重庆赛力斯凤凰智创科技有限公司 | New energy vehicle refrigerant system and control method |
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