CN107425232B - A kind of power battery water chiller system and its intelligent control method - Google Patents

A kind of power battery water chiller system and its intelligent control method Download PDF

Info

Publication number
CN107425232B
CN107425232B CN201710330486.9A CN201710330486A CN107425232B CN 107425232 B CN107425232 B CN 107425232B CN 201710330486 A CN201710330486 A CN 201710330486A CN 107425232 B CN107425232 B CN 107425232B
Authority
CN
China
Prior art keywords
temperature
battery
power battery
water
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710330486.9A
Other languages
Chinese (zh)
Other versions
CN107425232A (en
Inventor
徐一凡
杨福清
林靖
黄玲
方媛
曾令厚
唐静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen King Long United Automotive Industry Co Ltd
Original Assignee
Xiamen King Long United Automotive Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen King Long United Automotive Industry Co Ltd filed Critical Xiamen King Long United Automotive Industry Co Ltd
Priority to CN201710330486.9A priority Critical patent/CN107425232B/en
Publication of CN107425232A publication Critical patent/CN107425232A/en
Application granted granted Critical
Publication of CN107425232B publication Critical patent/CN107425232B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022Compressor control arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • H01M10/633Control systems characterised by algorithms, flow charts, software details or the like
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • H01M10/635Control systems based on ambient temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • H01M10/6568Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/66Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663Heat-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

Disclosed by the invention is a kind of power battery 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, power battery cabinet, 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 setting.The present invention can not only effectively improve the degree of automation of power battery water chiller control, and the control system can adaptively adjust compressor, electronic water pump and condenser fan working speed, maintain power battery work in optimum temperature range and the temperature difference range, and battery temperature tendency is predicted by ampere-hour integral in advance, the hysteresis of temperature acquisition can effectively be solved by increasing modifying factor.

Description

A kind of power battery water chiller system and its intelligent control method
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 technique
During electric automobile during traveling, complicated chemical reaction occurs in charge and discharge for power battery, is easy in battery The a large amount of heat of inner accumulation, causes battery temperature to rise, and the battery performances index such as transfer efficiency, cycle life is caused to decline, And traditional power battery cooling system uses natural air cooled and water cooling, and high-power power battery is all made of water-cooling project.
In the control of traditional power battery water chiller, generally controlled using shoulder rotation, by set 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 It is operated with fixed rotating speed;When battery temperature is lower than setting cryogenic temperature, compressor, electronic water pump and condenser fan stop working, The variation of such loop control battery temperature.This control method is simple, but often has the disadvantage in that
One, compressor, electronic water pump and condenser fan frequent starting and stopping, easily causing the inside battery temperature difference larger, Temperature equalization is poor, and does not give full play to the frequency conversion effect of compressor, leads to the reduction of product service life, vehicle hundred is public In power consumption increase, to influence vehicle service performance.
Two, after water chiller stops working, water pump stops working immediately, causes cooling line temperature too low, is unable to get Circulating cooling causes refrigeration device to be easily damaged.
Summary of the invention
Disclosed by the invention is that a kind of power battery water chiller system and its intelligent control method, main purpose are Overcome deficiencies of the prior art and disadvantage, provides a kind of power battery water chiller intelligent control method, it is not only The degree of automation of power battery 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 maintain power battery work in optimum temperature range and the temperature difference range, and Battery temperature tendency is predicted in advance by ampere-hour integral, and the hysteresis of temperature acquisition can effectively be solved by increasing modifying factor, more Added with the temperature equalization of effect control power battery, extend power battery service life, and effectively reduces water chiller operation Power consumption.
The technical solution adopted by the invention is as follows:
A kind of power battery water chiller system, including water chiller and water chiller controller, the water chiller packet Include compressor, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger, ptc heater, threeway Valve, inflow temperature sensor, power battery cabinet, leaving water temperature sensors, water tank, electronic water pump, the compressor, pressure are opened Pass, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger series connection setting;The ptc heater, threeway Valve, inflow temperature sensor, power battery cabinet, leaving water temperature sensors, water tank, electronic water pump series connection setting, and pass through The triple valve and the plate heat exchanger, which are in parallel, connects setting, and the water chiller controller passes through CAN bus and the water Cold group establishes data communication connection, which is equipped with a timer, timing cycle W, which sets There are four operating modes, respectively standby mode, circulation pattern, refrigeration mode and heating mode.
The intelligent control method of the power battery water chiller system, comprising the following specific steps
Step 1: after the water chiller low pressure powers on, system enters standby mode, the pressure after detecting fault-free automatically It contracts mechanical, electrical sub- water pump and condenser fan stops working;
Step 2: the water chiller controller receives battery cell minimum temperature T1, electricity in the power battery cabinet The temperature of pond monomer maximum temperature T2 and each battery modules, and a whole set of battery mean temperature T3 is calculated, while the water chiller Controller acquires the inflow temperature T4 of the inflow temperature sensor and the leaving water temperature T5 of leaving water temperature sensors respectively, setting Target is freezed, and opening temperature T6, target refrigeration stop temperature T7, target heats opening temperature T8, heating stops temperature T9 and the limit Temperature T10;
Step 3: it is higher than target refrigeration opening temperature T6 or warm lower than target heating unlatching when meeting battery mean temperature T3 The battery cell temperature difference for spending T8 or the Battery case is more than setting value, and the water chiller enters circulation pattern, control system The electronic water pump is opened, running speed is initial setting speed n10, controls the flow of power battery cooling medium;
Step 4: after entering circulation pattern, when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, by Circulation pattern is cut into refrigeration mode;
Step 5: after entering circulation pattern, when meeting battery mean temperature T3 lower than target heating opening temperature T8, by Circulation pattern is cut into heating mode;
Step 6: after entering circulation pattern, when inflow temperature T4 and the leaving water temperature sensing for meeting inflow temperature sensor It is more than set temperature that the leaving water temperature T5 of device, which reaches battery cell the temperature difference range in set temperature or power battery cabinet, by following Ring mode is cut into the electronic water pump and condenser fan all runs at high speed;
Step 7: after entering circulation pattern, when meeting, battery dump energy is lower than 30% in power battery cabinet or vehicle is high When pressure electricity, water chiller jumps out circulation pattern and stops working.
Further, the step 4 refrigeration mode comprising the following specific steps
(1) after entering refrigeration mode, triple valve is closed, then successively opens the condenser fan and compressor, the condensation The initial launch revolving speed of fan and compressor is respectively n20 and n30;
(2) when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, compressor is every 10 timing weeks Phase W increases compressor rotary speed, and each incremental speed is 200r/min, until reach the operation of compressor highest working speed, and it is cold Solidifying fan and electronic water pump work the high speed conditions in respectively;
(3) when meeting battery mean temperature T3 equal to target refrigeration opening temperature T6, compressor then keeps former revolving speed, and Condenser fan and electronic water pump increase speed every 10 timing cycle W, and each revolving speed incremental change is 50r/min, until reaching Each component highest working speed operation;
(4) when power battery mean temperature T3 is lower than target refrigeration opening temperature T6, compressor is every 20 timing cycle W Compressor rotary speed is reduced, each revolving speed is reduced to 100r/min, and condenser fan and electronic water pump subtract every 20 timing cycle W Small revolving speed, each revolving speed incremental change are 50r/min, until reaching each component initial speed operation;
(5) stop temperature T7, electronic water pump, condenser fan and compression when power battery mean temperature T3 reaches target refrigeration Machine revolving speed is reduced to initial launch revolving speed n10, n20 and n30;
(6) when the inflow temperature T4 of inflow temperature sensor is lower than limiting temperature T10, control system exits refrigeration mode, Compressor and condenser fan operation initial speed are respectivelyWithIt stops working after continuing 20 timing cycles, and returns to and follow Ring mode.
Further, the step 5 heating mode comprising the following specific steps
(1) after entering heating mode, triple valve is opened, is then turned on ptc heater, water chiller is added using PTC ceramics Thermal technology, according to battery thermal management system scheme, it is respectively P1, P2 and P3 that system, which designs four heating powers, and meets P1 > P2 > P3 > 0;
(2) battery heating opening temperature T8 and heating stop setting a temperature threshold Z1 between temperature T9, work as power electric For pond mean temperature T3 at (- 20, T8), PTC heating power is P1, and electronic water pump revolving speed is n13;
(3) when power battery mean temperature T3 is at (T8, Z1), PTC heating power is P2, and electronic water pump revolving speed is n12;
(4) when power battery mean temperature T3 is at (Z1, T9), PTC heating power is P3, and electronic water pump revolving speed is n11; Wherein n13 > n12 > n11;
(3) PTC is then closed when power battery mean temperature T3 reaches heating stopping temperature T9, closes triple valve, system is returned To circulation pattern.
Further, battery operating current in the water chiller acquisition CAN bus, and calculated using ampere-hour integration method The current heat exchange capacity of battery predicts battery temperature tendency in advance.
By the above-mentioned description of this invention it is found that compared to the prior art, the present invention has the advantages that
The present invention can not only effectively improve the degree of automation of power battery water chiller control, and flat according to battery Equal temperature and target temperature real time contrast analyze, and adaptively adjust compressor, electronic water pump and condenser fan working speed, more Directly locking power battery works long hours in optimum temperature range and the temperature difference range, and is predicted in advance by ampere-hour integral Battery temperature tendency, the hysteresis of temperature acquisition can effectively be solved by increasing modifying factor, more efficient control power battery Temperature equalization extends power battery service life, and effectively reduces water chiller operation power consumption.
Detailed description of the invention
Fig. 1 is the system architecture diagram of power battery 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.
Specific embodiment
Explanation is with reference to the accompanying drawings to further explain a specific embodiment of the invention.
As shown in Figures 1 to 4, a kind of power battery 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, power battery cabinet 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 6,7 series connection of plate heat exchanger is arranged;The ptc heater 8, triple valve 9, inflow temperature sensor 10, power battery cabinet 11, leaving water temperature sensors 12, water tank 13,14 series connection of electronic water pump setting, 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 is established data communication by CAN bus and the water chiller and connected It connects, which is equipped with a timer, timing cycle W, which sets there are four operating mode, respectively Standby mode, circulation pattern, refrigeration mode and heating mode.
Further, the intelligent control method of the power battery water chiller system, comprising the following specific steps
Step 1: after the water chiller low pressure powers on, system enters standby mode, the pressure after detecting fault-free automatically It contracts mechanical, electrical sub- water pump and condenser fan stops working;
Step 2: the water chiller controller receives battery cell minimum temperature T1, electricity in the power battery cabinet The temperature of pond monomer maximum temperature T2 and each battery modules, and a whole set of battery mean temperature T3 is calculated, while the water chiller Controller acquires the inflow temperature T4 of the inflow temperature sensor and the leaving water temperature T5 of leaving water temperature sensors respectively, setting Target is freezed, and opening temperature T6, target refrigeration stop temperature T7, target heats opening temperature T8, heating stops temperature T9 and the limit Temperature T10;
Step 3: it is higher than target refrigeration opening temperature T6 or warm lower than target heating unlatching when meeting battery mean temperature T3 The battery cell temperature difference for spending T8 or the Battery case is more than setting value, and the water chiller enters circulation pattern, control system The electronic water pump is opened, running speed is initial setting speed n10, controls the flow of power battery cooling medium;
Step 4: after entering circulation pattern, when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, by Circulation pattern is cut into refrigeration mode;
Step 5: after entering circulation pattern, when meeting battery mean temperature T3 lower than target heating opening temperature T8, by Circulation pattern is cut into heating mode;
Step 6: after entering circulation pattern, when inflow temperature T4 and the leaving water temperature sensing for meeting inflow temperature sensor It is more than set temperature that the leaving water temperature T5 of device, which reaches battery cell the temperature difference range in set temperature or power battery cabinet, by following Ring mode is cut into the electronic water pump and condenser fan all runs at high speed;
Step 7: after entering circulation pattern, when meeting, battery dump energy is lower than 30% in power battery cabinet or vehicle is high When pressure electricity, water chiller jumps out circulation pattern and stops working.
Further, the step 4 refrigeration mode comprising the following specific steps
(1) after entering refrigeration mode, triple valve is closed, then successively opens the condenser fan and compressor, the condensation The initial launch revolving speed of fan and compressor is respectively n20 and n30;
(2) when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, compressor is every 10 timing weeks Phase W increases compressor rotary speed, and each incremental speed is 200r/min, until reach the operation of compressor highest working speed, and it is cold Solidifying fan and electronic water pump work the high speed conditions in respectively;
(3) when meeting battery mean temperature T3 equal to target refrigeration opening temperature T6, compressor then keeps former revolving speed, and Condenser fan and electronic water pump increase speed every 10 timing cycle W, and each revolving speed incremental change is 50r/min, until reaching Each component highest working speed operation;
(4) when power battery mean temperature T3 is lower than target refrigeration opening temperature T6, compressor is every 20 timing cycle W Compressor rotary speed is reduced, each revolving speed is reduced to 100r/min, and condenser fan and electronic water pump subtract every 20 timing cycle W Small revolving speed, each revolving speed incremental change are 50r/min, until reaching each component initial speed operation;
(5) stop temperature T7, electronic water pump, condenser fan and compression when power battery mean temperature T3 reaches target refrigeration Machine revolving speed is reduced to initial launch revolving speed n10, n20 and n30;
(6) when the inflow temperature T4 of inflow temperature sensor is lower than limiting temperature T10, control system exits refrigeration mode, Compressor and condenser fan operation initial speed are respectivelyWithIt stops working after continuing 20 timing cycles, and returns to and follow Ring mode.
Further, the step 5 heating mode comprising the following specific steps
(1) after entering heating mode, triple valve is opened, is then turned on ptc heater, water chiller is added using PTC ceramics Thermal technology, according to battery thermal management system scheme, it is respectively P1, P2 and P3 that system, which designs four heating powers, and meets P1 > P2 > P3 > 0;
(2) battery heating opening temperature T8 and heating stop setting a temperature threshold Z1 between temperature T9, work as power electric For pond mean temperature T3 at (- 20, T8), PTC heating power is P1, and electronic water pump revolving speed is n13;
(3) when power battery mean temperature T3 is at (T8, Z1), PTC heating power is P2, and electronic water pump revolving speed is n12;
(4) when power battery mean temperature T3 is at (Z1, T9), PTC heating power is P3, and electronic water pump revolving speed is n11; Wherein n13 > n12 > n11;
(3) PTC is then closed when power battery mean temperature T3 reaches heating stopping temperature T9, closes triple valve, system is returned To circulation pattern.
Further, battery operating current in the water chiller acquisition CAN bus, and calculated using ampere-hour integration method The current heat exchange capacity of battery predicts battery temperature tendency in advance.
The present invention can not only effectively improve the degree of automation of power battery water chiller control, and flat according to battery Equal temperature and target temperature real time contrast analyze, and adaptively adjust compressor, electronic water pump and condenser fan working speed, more Directly locking power battery works long hours in optimum temperature range and the temperature difference range, and is predicted in advance by ampere-hour integral Battery temperature tendency, the hysteresis of temperature acquisition can effectively be solved by increasing modifying factor, more efficient control power battery Temperature equalization extends power battery service life, and effectively reduces water chiller operation power consumption.
The above is only a specific embodiment of the present invention, but design concept of the invention is not limited merely to this, all benefits The present invention is improved with carrying out unsubstantiality with this design, should be belonged to behavior that violates the scope of protection of the present invention.

Claims (3)

1. a kind of power battery water chiller system, it is characterised in that: including water chiller and water chiller controller, the water Cold group includes that compressor, pressure switch, condenser, condenser fan, liquid storage drying chamber, expansion valve, plate heat exchanger, PTC add Hot device, triple valve, inflow temperature sensor, power battery cabinet, 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 setting;The PTC adds Hot device is set with triple valve, inflow temperature sensor, power battery cabinet, leaving water temperature sensors, water tank, electronic water pump series connection It sets, and is in parallel by the triple valve and the plate heat exchanger and connects setting, the water chiller controller passes through CAN bus It establishes data communication with the water chiller to connect, which is equipped with a timer, timing cycle W, the water Cold group is set there are four operating mode, respectively standby mode, circulation pattern, refrigeration mode and heating mode;
The intelligent control method of the power battery water chiller system, comprising the following specific steps
Step 1: after the water chiller low pressure powers on, system enters standby mode, the compression after detecting fault-free automatically Mechanical, electrical sub- water pump and condenser fan stop working;
Step 2: the water chiller controller receives battery cell minimum temperature T1, battery list in the power battery cabinet The temperature of body maximum temperature T2 and each battery modules, and a whole set of battery mean temperature T3 is calculated, while the water chiller controls Device acquires the inflow temperature T4 of the inflow temperature sensor and the leaving water temperature T5 of leaving water temperature sensors respectively, and target is arranged Freezing, opening temperature T6, target refrigeration stop temperature T7, target heats opening temperature T8, heating stops temperature T9 and limiting temperature T10;
Step 3: it is higher than target refrigeration opening temperature T6 or lower than target heating opening temperature T8 when meeting battery mean temperature T3 Or the battery cell temperature difference of the power battery cabinet is more than setting value, the water chiller enters circulation pattern, control system The electronic water pump is opened, running speed is initial setting speed n10, controls the flow of power battery cooling medium;
Step 4: after entering circulation pattern, when meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, by recycling Mode is cut into refrigeration mode;
Step 5: after entering circulation pattern, when meeting battery mean temperature T3 lower than target heating opening temperature T8, by recycling Mode is cut into heating mode;
Step 6: after entering circulation pattern, when the inflow temperature T4's and leaving water temperature sensors for meeting inflow temperature sensor It is more than set temperature that leaving water temperature T5, which reaches battery cell the temperature difference range in set temperature or power battery cabinet, by cyclic module Formula is cut into the electronic water pump and condenser fan all runs at high speed;
Step 7: after entering circulation pattern, it is lower than under 30% or vehicle high pressure when meeting battery dump energy in power battery cabinet When electric, water chiller jumps out circulation pattern and stops work;
After the refrigeration mode of the step 4 is comprising the following specific steps (1) enter refrigeration mode, triple valve is closed, then first After open the condenser fan and compressor, the initial launch revolving speed of the condenser fan and compressor is respectively n20 and n30;(2) When meeting battery mean temperature T3 higher than target refrigeration opening temperature T6, compressor increases compression every 10 timing cycle W Machine revolving speed, each incremental speed are 200r/min, until reach the operation of compressor highest working speed, and condenser fan and electronics Water pump is worked respectively in middle high speed conditions;
(3) when meeting battery mean temperature T3 equal to target refrigeration opening temperature T6, compressor then keeps former revolving speed, and condenses Fan and electronic water pump increase speed every 10 timing cycle W, and each revolving speed incremental change is 50r/min, until reaching each portion The operation of part highest working speed;
(4) when power battery mean temperature T3 is lower than target refrigeration opening temperature T6, compressor is reduced every 20 timing cycle W Compressor rotary speed, each revolving speed is reduced to 100r/min, and condenser fan and electronic water pump turn every 20 timing cycle W reductions Speed, each revolving speed decrement are 50r/min, until reaching each component initial speed operation;
(5) stop temperature T7 when power battery mean temperature T3 reaches target refrigeration, electronic water pump, condenser fan and compressor turn Prompt drop is as low as initial launch revolving speed n10, n20 and n30;
(6) when the inflow temperature T4 of inflow temperature sensor is lower than limiting temperature T10, control system exits refrigeration mode, compresses Machine and condenser fan operation initial speed are respectively to stop working after n30 and n20 continues 20 timing cycles, and return to cyclic module Formula.
2. the intelligent control method of power battery water chiller system according to claim 1, it is characterised in that: the step Rapid five heating mode comprising the following specific steps
(1) after entering heating mode, triple valve is opened, is then turned on ptc heater, water chiller heats skill using PTC ceramics Art, according to battery thermal management system scheme, it is respectively P1, P2 and P3 that system, which designs three heating powers, and meets P1 > P2 > P3 > 0;
(2) battery heating opening temperature T8 and heating stop setting a temperature threshold Z1 between temperature T9, when power battery is flat For equal temperature T3 at (- 20 °C, T8), PTC heating power is P1, and electronic water pump revolving speed is n13;
(3) when power battery mean temperature T3 is at (T8, Z1), PTC heating power is P2, and electronic water pump revolving speed is n12;
(4) when power battery mean temperature T3 is at (Z1, T9), the heating power of ptc heater is P3, and electronic water pump revolving speed is n11 ;Wherein n13 > n12 > n11;
(5) ptc heater is then closed when power battery mean temperature T3 reaches heating stopping temperature T9, closes triple valve, system Return to circulation pattern.
3. the intelligent control method of power battery water chiller system according to claim 1, it is characterised in that: the water Cold group acquires battery operating current in CAN bus, and calculates the current heat exchange capacity of battery using ampere-hour integration method, Battery temperature tendency is predicted in advance.
CN201710330486.9A 2017-05-11 2017-05-11 A kind of power battery water chiller system and its intelligent control method Active CN107425232B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710330486.9A CN107425232B (en) 2017-05-11 2017-05-11 A kind of power battery water chiller system and its intelligent control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710330486.9A CN107425232B (en) 2017-05-11 2017-05-11 A kind of power battery water chiller system and its intelligent control method

Publications (2)

Publication Number Publication Date
CN107425232A CN107425232A (en) 2017-12-01
CN107425232B true CN107425232B (en) 2019-06-25

Family

ID=60424509

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710330486.9A Active CN107425232B (en) 2017-05-11 2017-05-11 A kind of power battery water chiller system and its intelligent control method

Country Status (1)

Country Link
CN (1) CN107425232B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108336445A (en) * 2017-12-20 2018-07-27 北京长城华冠汽车科技股份有限公司 Battery pack heat management system and battery pack
CN108235656B (en) * 2017-12-29 2020-02-07 北京金风科创风电设备有限公司 Control method and control system for converter cooling system of wind generating set
CN108258369A (en) * 2018-02-02 2018-07-06 浙江中车电车有限公司 A kind of pure electric city bus power battery temperature control method and system
CN108376810B (en) * 2018-02-12 2021-02-05 威马智慧出行科技(上海)有限公司 Power battery thermal management method and system
CN108808161B (en) * 2018-06-12 2020-10-02 深圳市锐钜科技有限公司 Management control method and device of battery thermal management system of electric bus
CN109004293B (en) * 2018-06-12 2020-11-10 南京骏睿新能源汽车科技有限公司 Size cycle control method for thermal management module of power battery liquid cooling system
CN108987848A (en) * 2018-07-20 2018-12-11 威马智慧出行科技(上海)有限公司 A kind of temprature control method of battery pack
CN110329113B (en) * 2019-08-19 2021-04-06 厦门金龙联合汽车工业有限公司 Control method of automobile comprehensive heat management system
CN110329112B (en) * 2019-08-19 2024-01-30 厦门金龙联合汽车工业有限公司 Comprehensive thermal management system for automobile
CN111584242B (en) * 2020-05-19 2021-09-28 上海奥威科技开发有限公司 Thermal management system of high-power energy storage equipment and control method thereof
CN111916596B (en) * 2020-06-11 2022-07-26 安徽正熹标王新能源有限公司 Battery protection device
CN112428883A (en) * 2020-11-13 2021-03-02 东风汽车集团有限公司 Heating method and heating system for power battery of electric automobile
CN112909375B (en) * 2021-03-22 2022-08-26 扬州嘉和新能源科技有限公司 Control method of battery thermal management unit
CN113193267A (en) * 2021-06-08 2021-07-30 奇瑞商用车(安徽)有限公司 Battery pack liquid cooling system and water temperature control method thereof
CN113791655B (en) * 2021-08-23 2022-12-02 深圳市科陆电子科技股份有限公司 Temperature difference control method, device and equipment for energy storage system and storage medium
CN114938914B (en) * 2021-11-05 2024-06-25 广东美芝制冷设备有限公司 Refrigeration control method, control device and cooking utensil
CN118099609B (en) * 2024-04-29 2024-07-23 杭叉集团股份有限公司 Cooling control device and method for high-voltage lithium battery forklift battery

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102315498A (en) * 2010-06-30 2012-01-11 上海汽车集团股份有限公司 Battery thermal management control method
CN102832425A (en) * 2012-05-04 2012-12-19 奇瑞汽车股份有限公司 Thermal management system and thermal management method of battery pack of electric automobile
CN102941791A (en) * 2012-11-08 2013-02-27 上海汽车集团股份有限公司 Integrated thermal cycling system of electric vehicle
CN103253149A (en) * 2013-05-30 2013-08-21 天津清源电动车辆有限责任公司 Air circulation battery box temperature management system of electric automobile
CN105546873A (en) * 2016-01-29 2016-05-04 苏州赛尔科凌空调有限公司 Blade electric vehicle battery constant temperature and air conditioner system and control method thereof
CN105720318A (en) * 2014-12-03 2016-06-29 广州汽车集团股份有限公司 New energy vehicle liquid-cooled battery system and temperature control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102315498A (en) * 2010-06-30 2012-01-11 上海汽车集团股份有限公司 Battery thermal management control method
CN102832425A (en) * 2012-05-04 2012-12-19 奇瑞汽车股份有限公司 Thermal management system and thermal management method of battery pack of electric automobile
CN102941791A (en) * 2012-11-08 2013-02-27 上海汽车集团股份有限公司 Integrated thermal cycling system of electric vehicle
CN103253149A (en) * 2013-05-30 2013-08-21 天津清源电动车辆有限责任公司 Air circulation battery box temperature management system of electric automobile
CN105720318A (en) * 2014-12-03 2016-06-29 广州汽车集团股份有限公司 New energy vehicle liquid-cooled battery system and temperature control method thereof
CN105546873A (en) * 2016-01-29 2016-05-04 苏州赛尔科凌空调有限公司 Blade electric vehicle battery constant temperature and air conditioner system and control method thereof

Also Published As

Publication number Publication date
CN107425232A (en) 2017-12-01

Similar Documents

Publication Publication Date Title
CN107425232B (en) A kind of power battery water chiller system and its intelligent control method
CN106953138B (en) A kind of power battery water chiller system and its temperature difference intelligent control method
CN107627875B (en) Intelligent temperature control system and control method for power battery of electric automobile
CN205194807U (en) Electric automobile power battery's thermal management system and electric automobile
CN109572486B (en) Thermal management system and control method for power battery of hybrid electric vehicle
CN110329113A (en) A kind of control method of automobile integrated thermal management system
CN205194808U (en) Electric automobile power battery's thermal management system and electric automobile
CN102628630B (en) Control method of air-cooling water chiller unit
CN103474714B (en) Electric automobile power battery constant temperature method and system thereof
CN103471251B (en) A kind of antifreeze control method for heat pump water-heating machine
CN201803567U (en) Defrosting control system of refrigerator
CN108987850A (en) Battery temperature control system of electric automobile and control method thereof
CN108808161A (en) A kind of management control method and its device of electric bus battery thermal management system
CN103353242A (en) Temperature-controllable dry and wet-open and closed integrated cooling tower system
CN210478446U (en) Integrated thermal management system of hybrid electric vehicle
CN201781195U (en) Outdoor power supply cabinet
CN110329112A (en) A kind of automobile integrated thermal management system
CN103471242B (en) A kind of heat pump water-heating machine with antifreeze function
CN202813932U (en) Energy-saving residential central temperature-control system
CN204156059U (en) A kind of for electromobile air-cooled power brick heat management device
CN102315593A (en) Outdoor power supply cabinet thermal-management method
CN103419596B (en) Small-size refrigerating and heating device for automobile
CN116885347A (en) Battery thermal management system of electric forklift and control method thereof
CN209607877U (en) One kind being based on bicirculating power battery pack heat management system
CN104214869A (en) Highly-efficient chilled water storage device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant