CN107425232A - A kind of electrokinetic cell water chiller system and its intelligent control method - Google Patents
A kind of electrokinetic cell water chiller system and its intelligent control method Download PDFInfo
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- CN107425232A CN107425232A CN201710330486.9A CN201710330486A CN107425232A CN 107425232 A CN107425232 A CN 107425232A CN 201710330486 A CN201710330486 A CN 201710330486A CN 107425232 A CN107425232 A CN 107425232A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
Disclosed by the invention is a kind of electrokinetic cell water chiller system and its intelligent control method, including water chiller and water chiller controller, the water chiller includes compressor, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger, ptc heater, triple valve, inflow temperature sensor, electrokinetic cell casing, leaving water temperature sensors, water tank, electronic water pump, and the compressor, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger series connection are set.The present invention can not only effectively improve the automaticity of electrokinetic cell water chiller control, and the control system can adaptively adjust compressor, electronic water pump and condenser fan working speed, electrokinetic cell is maintained to be operated in optimum temperature range and temperature range, and battery temperature tendency is predicted by ampere-hour integration in advance, increase modifying factor can effectively solve the hysteresis of temperature acquisition.
Description
Technical field
The present invention relates to the application field of new-energy automobile power battery technology, more specifically a kind of power electric
The cold machine set system of water and its intelligent control method.
Background technology
During electric automobile during traveling, the chemical reaction of complexity occurs in discharge and recharge for electrokinetic cell, easily in battery
The substantial amounts of heat of inner accumulation, causes battery temperature to rise, and causes the battery performance such as conversion efficiency, cycle life index to decline,
And traditional power battery cooling system uses natural air cooled and water cooling, and high-power power battery uses water-cooling project.
In the control of traditional power battery water chiller, typically controlled using shoulder rotation, by design temperature and battery temperature
Compare, when battery temperature is higher than setting cryogenic temperature, water chiller starts to freeze, compressor, electronic water pump and condenser fan
Operated with fixed rotating speed；When battery temperature is less than setting cryogenic temperature, compressor, electronic water pump and condenser fan are stopped,
The change of such loop control battery temperature.This control method is simple, but often has the following disadvantages：
First, compressor, electronic water pump and condenser fan frequent starting easily cause the inside battery temperature difference larger, temperature with stopping
It is harmonious poor, and the frequency conversion effect of compressor is not given full play to, cause the reduction of product service life, hundred kilometers of consumptions of vehicle
Electricity increase, so as to influence vehicle performance.
2nd, after water chiller is stopped, water pump is stopped immediately, causes cooling line temperature too low, can not obtain
Circulating cooling, refrigeration device is caused to be easily damaged.
The content of the invention
Disclosed by the invention is that a kind of electrokinetic cell water chiller system and its intelligent control method, its main purpose are
Overcome deficiencies of the prior art and shortcoming, there is provided a kind of electrokinetic cell water chiller intelligent control method, it is not only
The automaticity of electrokinetic cell water chiller control can be effectively improved, and the control system can adaptively adjust compression
Mechanical, electrical sub- water pump and condenser fan working speed, electrokinetic cell is maintained to be operated in optimum temperature range and temperature range, and
Battery temperature tendency is predicted by ampere-hour integration in advance, increase modifying factor can effectively solve the hysteresis of temperature acquisition, more
Added with the temperature equalization of effect control electrokinetic cell, extend electrokinetic cell service life, and effectively reduce water chiller operation
Power consumption.
The technical solution adopted by the present invention is as follows：
A kind of electrokinetic cell water chiller system, including water chiller and water chiller controller, the water chiller include pressure
Contracting machine, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger, ptc heater, triple valve,
Inflow temperature sensor, electrokinetic cell casing, leaving water temperature sensors, water tank, electronic water pump, the compressor, pressure switch,
Condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger series connection are set；The ptc heater, triple valve,
Inflow temperature sensor, electrokinetic cell casing, leaving water temperature sensors, water tank, electronic water pump series connection are set, and by described
Triple valve is in parallel with the plate heat exchanger and connects setting, and the water chiller controller passes through CAN and the water cooling unit
Vertical data communication connection is set up, the water chiller controller is provided with a timer, timing cycle W, and the water chiller is provided with four
Individual mode of operation, respectively standby mode, circulation pattern, refrigeration mode and heating mode.
The intelligent control method of described electrokinetic cell water chiller system, including step in detail below：
Step 1：In the water chiller low pressure after electricity, standby mode, the compression are entered after system automatic detection fault-free
Mechanical, electrical sub- water pump and condenser fan are stopped；
Step 2：The water chiller controller receives battery cell minimum temperature T1, battery list in the electrokinetic cell casing
Body maximum temperature T2 and each battery modules temperature, and a whole set of battery mean temperature T3 is calculated, while the water chiller controls
Device gathers the inflow temperature T4 of the inflow temperature sensor and the leaving water temperature T5 of leaving water temperature sensors respectively, sets target
Opening temperature of freezing T6, target refrigeration stop temperature T7, target heats opening temperature T8, heating stops temperature T9 and limiting temperature
T10；
Step 3：When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6 or less than target heating opening temperature T8
Or the battery cell temperature difference of the Battery case exceedes setting value, the water chiller enters circulation pattern, and control system is opened
The electronic water pump, running speed are initial setting speed n10, control the flow of electrokinetic cell cooling medium；
Step 4：Into after circulation pattern, when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, by circulating
Pattern is cut into refrigeration mode；
Step 5：Into after circulation pattern, when meeting battery mean temperature T3 less than target heating opening temperature T8, by circulating
Pattern is cut into heating mode；
Step 6：Into after circulation pattern, when the inflow temperature T4's and leaving water temperature sensors for meeting inflow temperature sensor
Leaving water temperature T5 reaches battery cell temperature range in design temperature, or electrokinetic cell casing and exceedes design temperature, by cyclic module
Formula is cut into the electronic water pump and condenser fan all runs at high speed；
Step 7：Into after circulation pattern, when meeting in electrokinetic cell casing battery dump energy less than 30% or under vehicle high pressure
When electric, water chiller is jumped out circulation pattern and is stopped.
Further, the refrigeration mode of the step 4 includes step in detail below：
（1）Into after refrigeration mode, triple valve is closed, then successively opens the condenser fan and compressor, the condenser fan
Initial launch rotating speed with compressor is respectively n20 and n30；
（2）When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, compressor increases every 10 timing cycle W
Adding compressor rotary speed, each incremental speed is 200r/min, until reach the operation of compressor highest working speed, and condenser fan
High speed conditions in being operated in respectively with electronic water pump；
（3）When meeting that battery mean temperature T3 is equal to target refrigeration opening temperature T6, compressor then keeps former rotating speed, and condenses
Fan and electronic water pump increase speed every 10 timing cycle W, and each rotating speed incremental change is 50r/min, until reaching each portion
Part highest working speed is run；
（4）When electrokinetic cell mean temperature T3 reduces less than target refrigeration opening temperature T6, compressor every 20 timing cycle W
Compressor rotary speed, each rotating speed is reduced to 100r/min, and condenser fan and electronic water pump turn every 20 timing cycle W reductions
Speed, each rotating speed incremental change are 50r/min, until reaching each part initial speed operation；
（5）Stop temperature T7 when electrokinetic cell mean temperature T3 reaches target refrigeration, electronic water pump, condenser fan and compressor turn
Speed is reduced to initial launch rotating speed n10, n20 and n30；
（6）When the inflow temperature T4 of inflow temperature sensor is less than limiting temperature T10, control system exits refrigeration mode, compressor
It is respectively with condenser fan operation initial speedWithIt is stopped after continuing 20 timing cycles, and returns to circulation pattern.
Further, the heating mode of the step 5 includes step in detail below：
（1）Into after heating mode, triple valve is opened, is then turned on ptc heater, water chiller utilizes PTC-ceramic heating skill
Art, according to battery thermal management system scheme, four heating powers of system design are respectively P1, P2 and P3, and meet P1 ＞ P2 ＞
P3 ＞ 0；
（2）Battery heats opening temperature T8 and heating stops setting a temperature threshold Z1 between temperature T9, when electrokinetic cell is put down
Equal temperature T3 exists（- 20, T8）, PTC heating powers are P1, and electronic water pump rotating speed is n13;
（3）When electrokinetic cell mean temperature T3 exists（T8, Z1）, PTC heating powers are P2, and electronic water pump rotating speed is n12;
（4）When electrokinetic cell mean temperature T3 exists（Z1, T9）, PTC heating powers are P3, and electronic water pump rotating speed is n11;Wherein
n13> n12> n11；
（3）PTC is then closed when electrokinetic cell mean temperature T3 reaches heating stopping temperature T9, closes triple valve, system, which returns to, to be followed
Ring mode.
Further, battery operating current in the water chiller collection CAN, and calculated using ampere-hour integration method
The current heat exchange ability of battery, battery temperature tendency is predicted in advance.
By the above-mentioned description of this invention, compared to the prior art, the advantage of the invention is that：
The present invention can not only effectively improve the automaticity of electrokinetic cell water chiller control, and according to the average temperature of battery
Degree is analyzed with target temperature real time contrast, adaptively adjusts compressor, electronic water pump and condenser fan working speed, more directly
Locking electrokinetic cell works long hours in optimum temperature range and temperature range, and predicts battery in advance by ampere-hour integration
Temperature tendency, increase modifying factor can effectively solve the hysteresis of temperature acquisition, the temperature of more efficient control electrokinetic cell
Harmony, extend electrokinetic cell service life, and effectively reduce water chiller operation power consumption.
Brief description of the drawings
Fig. 1 is the system architecture diagram of electrokinetic cell water chiller in invention.
Fig. 2 is water chiller control method schematic diagram.
Fig. 3 is refrigeration mode control method schematic diagram of the present invention.
Fig. 4 is heating mode control method schematic diagram of the present invention.
Embodiment
Illustrate with reference to the accompanying drawings further to illustrate the embodiment of the present invention.
As shown in Figures 1 to 4, a kind of electrokinetic cell water chiller system, including water chiller and water chiller controller,
The water chiller includes compressor 1, pressure switch 2, condenser 3, condenser fan 4, liquid storage drying chamber 5, expansion valve 6, board-like
Exchanger 7, ptc heater 8, triple valve 9, inflow temperature sensor 10, electrokinetic cell casing 11, leaving water temperature sensors 12,
Water tank 13, electronic water pump 14, the compressor 1, pressure switch 2, condenser 3, condenser fan 4, liquid storage drying chamber 5, expansion valve
6th, the series connection of plate heat exchanger 7 is set；The ptc heater 8, triple valve 9, inflow temperature sensor 10, electrokinetic cell casing
11st, leaving water temperature sensors 12, water tank 13, the series connection of electronic water pump 14 set, and pass through the triple valve 9 and the board-like friendship
Parallel operation 7, which is in parallel, connects setting, and the water chiller controller establishes data communication link by CAN and the water chiller
Connect, the water chiller controller is provided with a timer, timing cycle W, and the water chiller is provided with four mode of operations, is respectively
Standby mode, circulation pattern, refrigeration mode and heating mode.
Further, the intelligent control method of described electrokinetic cell water chiller system, including step in detail below：
Step 1：In the water chiller low pressure after electricity, standby mode, the compression are entered after system automatic detection fault-free
Mechanical, electrical sub- water pump and condenser fan are stopped；
Step 2：The water chiller controller receives battery cell minimum temperature T1, battery list in the electrokinetic cell casing
Body maximum temperature T2 and each battery modules temperature, and a whole set of battery mean temperature T3 is calculated, while the water chiller controls
Device gathers the inflow temperature T4 of the inflow temperature sensor and the leaving water temperature T5 of leaving water temperature sensors respectively, sets target
Opening temperature of freezing T6, target refrigeration stop temperature T7, target heats opening temperature T8, heating stops temperature T9 and limiting temperature
T10；
Step 3：When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6 or less than target heating opening temperature T8
Or the battery cell temperature difference of the Battery case exceedes setting value, the water chiller enters circulation pattern, and control system is opened
The electronic water pump, running speed are initial setting speed n10, control the flow of electrokinetic cell cooling medium；
Step 4：Into after circulation pattern, when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, by circulating
Pattern is cut into refrigeration mode；
Step 5：Into after circulation pattern, when meeting battery mean temperature T3 less than target heating opening temperature T8, by circulating
Pattern is cut into heating mode；
Step 6：Into after circulation pattern, when the inflow temperature T4's and leaving water temperature sensors for meeting inflow temperature sensor
Leaving water temperature T5 reaches battery cell temperature range in design temperature, or electrokinetic cell casing and exceedes design temperature, by cyclic module
Formula is cut into the electronic water pump and condenser fan all runs at high speed；
Step 7：Into after circulation pattern, when meeting in electrokinetic cell casing battery dump energy less than 30% or under vehicle high pressure
When electric, water chiller is jumped out circulation pattern and is stopped.
Further, the refrigeration mode of the step 4 includes step in detail below：
（1）Into after refrigeration mode, triple valve is closed, then successively opens the condenser fan and compressor, the condenser fan
Initial launch rotating speed with compressor is respectively n20 and n30；
（2）When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, compressor increases every 10 timing cycle W
Adding compressor rotary speed, each incremental speed is 200r/min, until reach the operation of compressor highest working speed, and condenser fan
High speed conditions in being operated in respectively with electronic water pump；
（3）When meeting that battery mean temperature T3 is equal to target refrigeration opening temperature T6, compressor then keeps former rotating speed, and condenses
Fan and electronic water pump increase speed every 10 timing cycle W, and each rotating speed incremental change is 50r/min, until reaching each portion
Part highest working speed is run；
（4）When electrokinetic cell mean temperature T3 reduces less than target refrigeration opening temperature T6, compressor every 20 timing cycle W
Compressor rotary speed, each rotating speed is reduced to 100r/min, and condenser fan and electronic water pump turn every 20 timing cycle W reductions
Speed, each rotating speed incremental change are 50r/min, until reaching each part initial speed operation；
（5）Stop temperature T7 when electrokinetic cell mean temperature T3 reaches target refrigeration, electronic water pump, condenser fan and compressor turn
Speed is reduced to initial launch rotating speed n10, n20 and n30；
（6）When the inflow temperature T4 of inflow temperature sensor is less than limiting temperature T10, control system exits refrigeration mode, compressor
It is respectively with condenser fan operation initial speedWithIt is stopped after continuing 20 timing cycles, and returns to circulation pattern.
Further, the heating mode of the step 5 includes step in detail below：
（1）Into after heating mode, triple valve is opened, is then turned on ptc heater, water chiller utilizes PTC-ceramic heating skill
Art, according to battery thermal management system scheme, four heating powers of system design are respectively P1, P2 and P3, and meet P1 ＞ P2 ＞
P3 ＞ 0；
（2）Battery heats opening temperature T8 and heating stops setting a temperature threshold Z1 between temperature T9, when electrokinetic cell is put down
Equal temperature T3 exists（- 20, T8）, PTC heating powers are P1, and electronic water pump rotating speed is n13;
（3）When electrokinetic cell mean temperature T3 exists（T8, Z1）, PTC heating powers are P2, and electronic water pump rotating speed is n12;
（4）When electrokinetic cell mean temperature T3 exists（Z1, T9）, PTC heating powers are P3, and electronic water pump rotating speed is n11;Wherein
n13> n12> n11；
（3）PTC is then closed when electrokinetic cell mean temperature T3 reaches heating stopping temperature T9, closes triple valve, system, which returns to, to be followed
Ring mode.
Further, battery operating current in the water chiller collection CAN, and calculated using ampere-hour integration method
The current heat exchange ability of battery, battery temperature tendency is predicted in advance.
The present invention can not only effectively improve the automaticity of electrokinetic cell water chiller control, and be put down according to battery
Equal temperature is analyzed with target temperature real time contrast, adaptively adjusts compressor, electronic water pump and condenser fan working speed, more
Directly locking electrokinetic cell works long hours in optimum temperature range and temperature range, and is predicted in advance by ampere-hour integration
Battery temperature tendency, increase modifying factor can effectively solve the hysteresis of temperature acquisition, more efficient control electrokinetic cell
Temperature equalization, extend electrokinetic cell service life, and effectively reduce water chiller operation power consumption.
The embodiment of the present invention is above are only, but the design concept of the present invention is not limited merely to this, every profit
The present invention is improved with carrying out unsubstantiality with this design, should belong to the behavior for invading the scope of the present invention.
Claims (4)
- A kind of 1. electrokinetic cell water chiller system, it is characterised in that：Including water chiller and water chiller controller, the water Cold group includes compressor, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger, PTC and added Hot device, triple valve, inflow temperature sensor, electrokinetic cell casing, leaving water temperature sensors, water tank, electronic water pump, the compression Machine, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger series connection are set；The PTC adds Hot device, triple valve, inflow temperature sensor, electrokinetic cell casing, leaving water temperature sensors, water tank, electronic water pump series connection are set Put, and be in parallel by the triple valve and the plate heat exchanger and connect setting, the water chiller controller passes through CAN Data communication connection is established with the water chiller, the water chiller controller is provided with a timer, timing cycle W, the water Cold group is provided with four mode of operations, respectively standby mode, circulation pattern, refrigeration mode and heating mode；The intelligent control method of described electrokinetic cell water chiller system, including step in detail below：Step 1：In the water chiller low pressure after electricity, standby mode, the compression are entered after system automatic detection fault-free Mechanical, electrical sub- water pump and condenser fan are stopped；Step 2：The water chiller controller receives battery cell minimum temperature T1, battery list in the electrokinetic cell casing Body maximum temperature T2 and each battery modules temperature, and a whole set of battery mean temperature T3 is calculated, while the water chiller controls Device gathers the inflow temperature T4 of the inflow temperature sensor and the leaving water temperature T5 of leaving water temperature sensors respectively, sets target Opening temperature of freezing T6, target refrigeration stop temperature T7, target heats opening temperature T8, heating stops temperature T9 and limiting temperature T10；Step 3：When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6 or less than target heating opening temperature T8 Or the battery cell temperature difference of the Battery case exceedes setting value, the water chiller enters circulation pattern, and control system is opened The electronic water pump, running speed are initial setting speed n10, control the flow of electrokinetic cell cooling medium；Step 4：Into after circulation pattern, when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, by circulating Pattern is cut into refrigeration mode；Step 5：Into after circulation pattern, when meeting battery mean temperature T3 less than target heating opening temperature T8, by circulating Pattern is cut into heating mode；Step 6：Into after circulation pattern, when the inflow temperature T4's and leaving water temperature sensors for meeting inflow temperature sensor Leaving water temperature T5 reaches battery cell temperature range in design temperature, or electrokinetic cell casing and exceedes design temperature, by cyclic module Formula is cut into the electronic water pump and condenser fan all runs at high speed；Step 7：Into after circulation pattern, when meeting in electrokinetic cell casing battery dump energy less than 30% or under vehicle high pressure When electric, water chiller is jumped out circulation pattern and is stopped.
- 2. the intelligent control method of electrokinetic cell water chiller system according to claim 1, it is characterised in that：The step Rapid four refrigeration mode includes step in detail below：（1）Into after refrigeration mode, triple valve is closed, then successively opens the condenser fan and compressor, the condenser fan Initial launch rotating speed with compressor is respectively n20 and n30；（2）When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, compressor increases every 10 timing cycle W Adding compressor rotary speed, each incremental speed is 200r/min, until reach the operation of compressor highest working speed, and condenser fan High speed conditions in being operated in respectively with electronic water pump；（3）When meeting that battery mean temperature T3 is equal to target refrigeration opening temperature T6, compressor then keeps former rotating speed, and condenses Fan and electronic water pump increase speed every 10 timing cycle W, and each rotating speed incremental change is 50r/min, until reaching each portion Part highest working speed is run；（4）When electrokinetic cell mean temperature T3 reduces less than target refrigeration opening temperature T6, compressor every 20 timing cycle W Compressor rotary speed, each rotating speed is reduced to 100r/min, and condenser fan and electronic water pump turn every 20 timing cycle W reductions Speed, each rotating speed incremental change are 50r/min, until reaching each part initial speed operation；（5）Stop temperature T7 when electrokinetic cell mean temperature T3 reaches target refrigeration, electronic water pump, condenser fan and compressor turn Speed is reduced to initial launch rotating speed n10, n20 and n30；（6）When the inflow temperature T4 of inflow temperature sensor is less than limiting temperature T10, control system exits refrigeration mode, compressor It is respectively with condenser fan operation initial speedWithIt is stopped after continuing 20 timing cycles, and returns to circulation pattern.
- 3. the intelligent control method of electrokinetic cell water chiller system according to claim 1, it is characterised in that：The step Rapid five heating mode includes step in detail below：（1）Into after heating mode, triple valve is opened, is then turned on ptc heater, water chiller utilizes PTC-ceramic heating skill Art, according to battery thermal management system scheme, four heating powers of system design are respectively P1, P2 and P3, and meet P1 ＞ P2 ＞ P3 ＞ 0；（2）Battery heats opening temperature T8 and heating stops setting a temperature threshold Z1 between temperature T9, when electrokinetic cell is put down Equal temperature T3 exists（- 20, T8）, PTC heating powers are P1, and electronic water pump rotating speed is n13;（3）When electrokinetic cell mean temperature T3 exists（T8, Z1）, PTC heating powers are P2, and electronic water pump rotating speed is n12;（4）When electrokinetic cell mean temperature T3 exists（Z1, T9）, PTC heating powers are P3, and electronic water pump rotating speed is n11;Wherein n13> n12> n11；（3）PTC is then closed when electrokinetic cell mean temperature T3 reaches heating stopping temperature T9, closes triple valve, system, which returns to, to be followed Ring mode.
- 4. the intelligent control method of electrokinetic cell water chiller system according to claim 1, it is characterised in that：The water Battery operating current in cold group collection CAN, and the current heat exchange ability of battery is calculated using ampere-hour integration method, Battery temperature tendency is predicted in advance.
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