CN107521305A - A kind of new-energy automobile heat management system - Google Patents
A kind of new-energy automobile heat management system Download PDFInfo
- Publication number
- CN107521305A CN107521305A CN201710726984.5A CN201710726984A CN107521305A CN 107521305 A CN107521305 A CN 107521305A CN 201710726984 A CN201710726984 A CN 201710726984A CN 107521305 A CN107521305 A CN 107521305A
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- CN
- China
- Prior art keywords
- control module
- temperature
- heat management
- module
- cabin
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00785—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models by the detection of humidity or frost
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a kind of new-energy automobile heat management system, including driver's cabin Climate Control Module, motor refrigerating module, battery temperature control module, front end radiating module and heat management control module;Driver's cabin Climate Control Module, motor refrigerating module, battery temperature control module, front end radiating module are connected with heat management control module;Heat management control module, according to receive cabin temperature, driver's cabin humidity, battery bag temperature, battery bag humidity, motor internal temperature, power cabinet internal temperature information, judge whether to meet to require, and control each module to work according to judged result.The present invention effectively can be coupled air-conditioning, motor, battery using new-energy automobile heat management system, while controller is also reduced to one, can not only improve capacity usage ratio, and can reduce cost.
Description
Technical field
The present invention relates to new-energy automobile field, and in particular to a kind of new-energy automobile heat management system.
Background technology
With the development of society and the popularization of national policy, the enterprise of electric automobile and vehicle are more and more, with people
Growth in the living standard, automobile driver and crew require more and more higher to comfortableness in Automobile.The distance travelled of new-energy automobile
Relevant with the working environment of battery motor, battery and motor are operated under the conditions of optimum working temperature, can greatly improve vehicle
Cruise mileage, improves energy utilization rate.
The existing air-conditioning system of electric automobile, electromotor cooling system, battery temperature control system are three independent systems, are separated
Work, is respectively necessary for being controlled using three independent controls, and three sets of systems have three electric fans, works independently, part
Redundancy, it is separately controlled and is unfavorable for managing.
Existing new-energy automobile carries out damaging heat management by the way of air-conditioning, motor, battery separately radiate, without making
Into the waste of the energy content of battery, and need that controller is separately configured for air-conditioning, motor, battery, integral vehicle cost is high.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind can improve capacity usage ratio, Er Qieke
To reduce the new-energy automobile heat management system of cost.
The purpose of the present invention is achieved through the following technical solutions:A kind of new-energy automobile heat management system, including
Driver's cabin Climate Control Module, motor refrigerating module, battery temperature control module, front end radiating module and heat management control module;Driver's cabin
Climate Control Module, motor refrigerating module, battery temperature control module, front end radiating module are connected with heat management control module;
Driver's cabin Climate Control Module, to driving indoor temperature, humidity detects, and the real time data of measurement is transmitted into heat pipe
Manage control module;
Battery temperature control module is detected to the temperature humidity in battery bag, and the real time data of detection is transmitted into heat management
Aerial module;
Front end radiating module detects to the temperature in motor, power cabinet, and testing result will be sent into heat in real time
Management control module;
Heat management control module, according to receive cabin temperature, driver's cabin humidity, battery bag temperature, battery bag humidity,
Motor internal temperature, power cabinet internal temperature information, judge whether to meet to require, and each module work is controlled according to judged result
Make.
It is preferred that front end radiating module includes condenser, motor radiator, battery radiator, speed governing electric fan.
It is preferred that condenser, battery radiator, motor radiator are integrated.
It is preferred that heat management control module is the control axis of heat management system, can work bar according to vehicle
Part, natural environmental condition and user set that (for environmental condition as environment temperature, intensity of illumination, vehicle condition of work is vehicle power
Battery discharge current, electrokinetic cell voltage;User can like according to oneself, (the thermal management module band on management control module
Control panel, user can set the target temperature of driver's cabin by control panel), set driver's cabin target temperature., to control
Driver's cabin Climate Control Module, motor refrigerating module, battery temperature control module, the work of front end radiating module.
It is preferred that natural environmental condition is environment temperature, intensity of illumination, vehicle condition of work is vehicle power electric
Tank discharge electric current, electrokinetic cell voltage;User can like according to oneself, (the thermal management module band control on management control module
Panel processed, user can set the target temperature of driver's cabin by control panel), set driver's cabin target temperature.
It is preferred that the integrated power cabinet of power cabinet.
It is preferred that the real time data of measurement is transmitted to heat management by driver's cabin Climate Control Module by CAN message form
Control module.
It is preferred that the real time data of detection is transmitted to heat management sky by battery temperature control module by CAN message form
Middle module.
It is preferred that cabin interior temperature is 20-26 DEG C, and if cabin temperature is unsatisfactory for requiring, this heat pipe
Control module control driver's cabin Climate Control Module and the work of front end radiating module are managed, automatically adjusts cabin temperature to zone of reasonableness
It is interior;Driver's cabin humidity zone of reasonableness is≤70%, is unsatisfactory for requiring if driving indoor humidity, the control of heat management control module
Driver's cabin Climate Control Module and the work of front end radiating module, automatically adjust driver's cabin humidity in zone of reasonableness;Battery bag temperature is closed
It is 15-35 DEG C to manage scope, if battery bag temperature is unsatisfactory for requiring, heat management control module controls battery temperature control module to electricity
Pond bag temperature is adjusted, and makes battery bag temperature meet to require;Battery bag humidity requirement≤80%, if battery bag humidity is discontented with
Foot requires that then heat management control module control battery temperature control module and the work of front end radiating module, are automatically adjusted inside battery bag
Humidity;≤ 100 DEG C of motor temperature requirement, if motor temperature is unsatisfactory for requiring, the cooling of heat management control module controlled motor
Module and the work of front end radiating module, self-regulation motor internal temperature;≤ 60 DEG C of power cabinet internal temperature requirement, if power supply
Cabinet internal temperature is unsatisfactory for requiring, heat management control module controlled motor refrigerating module and the work of front end radiating module, adjusted automatically
Save power cabinet internal temperature.
The beneficial effects of the invention are as follows:Can be effectively by air-conditioning, motor, battery using new-energy automobile heat management system
Coupled, while controller is also reduced to one, can not only improve capacity usage ratio, and cost can be reduced.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
As shown in figure 1, a kind of new-energy automobile heat management system, including driver's cabin Climate Control Module, motor refrigerating module, electricity
Pond temperature control module, front end radiating module and heat management control module;Driver's cabin Climate Control Module, motor refrigerating module, battery temperature control
Module, front end radiating module are connected with heat management control module;
Driver's cabin Climate Control Module, to driving indoor temperature, humidity detects, and the real time data of measurement is transmitted into heat pipe
Manage control module;
Battery temperature control module is detected to the temperature humidity in battery bag, and the real time data of detection is transmitted into heat management
Aerial module;
Front end radiating module detects to the temperature in motor, power cabinet, and testing result will be sent into heat in real time
Management control module;
Heat management control module, according to receive cabin temperature, driver's cabin humidity, battery bag temperature, battery bag humidity,
Motor internal temperature, power cabinet internal temperature information, judge whether to meet to require, and each module work is controlled according to judged result
Make.
Preferably, front end radiating module includes condenser, motor radiator, battery radiator, speed governing electric fan.
Preferably, condenser, battery radiator, motor radiator are integrated.
Preferably, heat management control module is the control axis of heat management system, can be according to vehicle condition of work, nature
Environmental condition and user set that (environmental condition as environment temperature, intensity of illumination, vehicle condition of work is the electric discharge of vehicle electrokinetic cell
Electric current, electrokinetic cell voltage;User can like according to oneself, on management control module (thermal management module band control panel,
User can set the target temperature of driver's cabin by control panel), set driver's cabin target temperature., to control driver's cabin empty
Mode transfer block, motor refrigerating module, battery temperature control module, the work of front end radiating module.
Preferably, natural environmental condition is environment temperature, intensity of illumination, and vehicle condition of work is discharged for vehicle electrokinetic cell
Electric current, electrokinetic cell voltage;User can like according to oneself, on management control module (thermal management module band control panel,
User can set the target temperature of driver's cabin by control panel), set driver's cabin target temperature.
Preferably, the integrated power cabinet of power cabinet.
Preferably, the real time data of measurement is transmitted to heat management by CAN message form and controls mould by driver's cabin Climate Control Module
Block.
Preferably, the real time data of detection is transmitted to the aerial module of heat management by battery temperature control module by CAN message form.
Preferably, cabin interior temperature is 20-26 DEG C, if cabin temperature is unsatisfactory for requiring, the control of this heat management
Module controls driver's cabin Climate Control Module and the work of front end radiating module, automatically adjusts cabin temperature in zone of reasonableness;Drive
Room humidity zone of reasonableness is≤70%, is unsatisfactory for requiring if driving indoor humidity, heat management control module control driver's cabin
Climate Control Module and the work of front end radiating module, automatically adjust driver's cabin humidity in zone of reasonableness;Battery bag temperature zone of reasonableness
For 15-35 DEG C, if battery bag temperature is unsatisfactory for requiring, heat management control module controls battery temperature control module to battery bag temperature
Degree is adjusted, and makes battery bag temperature meet to require;Battery bag humidity requirement≤80%, if battery bag humidity is unsatisfactory for wanting
Ask, then heat management control module control battery temperature control module and the work of front end radiating module, automatically adjust battery bag interior humidity;
Motor temperature requirement≤100 DEG C, if motor temperature is unsatisfactory for requiring, heat management control module controlled motor refrigerating module and
Front end radiating module work, self-regulation motor internal temperature;≤ 60 DEG C of power cabinet internal temperature requirement, if inside power cabinet
Temperature is unsatisfactory for requiring, heat management control module controlled motor refrigerating module and the work of front end radiating module, automatically adjusts power supply
Cabinet internal temperature.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (9)
- A kind of 1. new-energy automobile heat management system, it is characterised in that:Including driver's cabin Climate Control Module, motor refrigerating module, electricity Pond temperature control module, front end radiating module and heat management control module;Driver's cabin Climate Control Module, motor refrigerating module, battery temperature control Module, front end radiating module are connected with heat management control module;Driver's cabin Climate Control Module, to driving indoor temperature, humidity detects, and the real time data of measurement is transmitted into heat management control Molding block;Battery temperature control module detects to the temperature humidity in battery bag, and it is aerial that the real time data of detection is transmitted into heat management Module;Front end radiating module detects to the temperature in motor, power cabinet, and testing result will be sent into heat management in real time Control module;Heat management control module, according to cabin temperature, driver's cabin humidity, battery bag temperature, battery bag humidity, the motor received Internal temperature, power cabinet internal temperature information, judge whether to meet to require, and control each module to work according to judged result.
- A kind of 2. new-energy automobile heat management system according to claim 1, it is characterised in that:Front end radiating module includes Condenser, motor radiator, battery radiator, speed governing electric fan.
- A kind of 3. new-energy automobile heat management system according to claim 1, it is characterised in that:Condenser, battery radiating Device, motor radiator are integrated.
- A kind of 4. new-energy automobile heat management system according to claim 1 or 2 or 3, it is characterised in that:Heat management controls Module is the control axis of heat management system, can be set according to vehicle condition of work, natural environmental condition and user to control Driver's cabin Climate Control Module, motor refrigerating module, battery temperature control module, the work of front end radiating module.
- A kind of 5. new-energy automobile heat management system according to claim 4, it is characterised in that:Natural environmental condition is ring Border temperature, intensity of illumination, vehicle condition of work are vehicle electrokinetic cell discharge current, electrokinetic cell voltage;User can basis Oneself hobby, on management control module, set driver's cabin target temperature.
- A kind of 6. new-energy automobile heat management system according to claim 4, it is characterised in that:The integrated electricity of power cabinet Source cabinet.
- A kind of 7. new-energy automobile heat management system according to claim 1 or 2 or 3 or 5 or 6, it is characterised in that:Drive The real time data of measurement is transmitted to heat management control module by room Climate Control Module by CAN message form.
- A kind of 8. new-energy automobile heat management system according to claim 1 or 2 or 3 or 5 or 6, it is characterised in that:Battery The real time data of detection is transmitted to the aerial module of heat management by temperature control module by CAN message form.
- A kind of 9. new-energy automobile heat management system according to claim 1 or 2 or 3 or 5 or 6, it is characterised in that:Drive Chamber interior temperature is 20-26 DEG C, if cabin temperature is unsatisfactory for requiring, this heat management control module control driver's cabin air-conditioning mould Block and the work of front end radiating module, automatically adjust cabin temperature in zone of reasonableness;Driver's cabin humidity zone of reasonableness for≤ 70%, it is unsatisfactory for requiring if driving indoor humidity, heat management control module control driver's cabin Climate Control Module and front end radiating Module works, and automatically adjusts driver's cabin humidity in zone of reasonableness;Battery bag temperature zone of reasonableness is 15-35 DEG C, if battery Bag temperature is unsatisfactory for requiring, then battery bag temperature is adjusted heat management control module control battery temperature control module, makes battery Bag temperature meets to require;Battery bag humidity requirement≤80%, if battery bag humidity is unsatisfactory for requiring, heat management control module Battery temperature control module and the work of front end radiating module are controlled, automatically adjusts battery bag interior humidity;Motor temperature requirement≤100 DEG C, if motor temperature is unsatisfactory for requiring, heat management control module controlled motor refrigerating module and the work of front end radiating module, Self-regulation motor internal temperature;≤ 60 DEG C of power cabinet internal temperature requirement, if power cabinet internal temperature is unsatisfactory for requiring, heat Management control module controlled motor refrigerating module and the work of front end radiating module, automatically adjust power cabinet internal temperature.
Priority Applications (1)
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CN201710726984.5A CN107521305A (en) | 2017-08-23 | 2017-08-23 | A kind of new-energy automobile heat management system |
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CN201710726984.5A CN107521305A (en) | 2017-08-23 | 2017-08-23 | A kind of new-energy automobile heat management system |
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CN201710726984.5A Pending CN107521305A (en) | 2017-08-23 | 2017-08-23 | A kind of new-energy automobile heat management system |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108773337A (en) * | 2018-05-31 | 2018-11-09 | 北京车和家信息技术有限公司 | Control system for heat management and vehicle |
CN109318681A (en) * | 2018-10-29 | 2019-02-12 | 珠海格力电器股份有限公司 | A kind of vehicle thermal management algorithm, system and vehicle |
CN110329110A (en) * | 2019-08-06 | 2019-10-15 | 江西博能上饶客车有限公司 | A kind of cell safety control system and control method for electric motor coach |
CN114721445A (en) * | 2022-03-25 | 2022-07-08 | 绍兴拓优智能科技有限公司 | New energy automobile heat management detection system |
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CN105196832A (en) * | 2015-09-30 | 2015-12-30 | 上海交通大学 | Electric automobile waste heat recovery heat pump type comprehensive heat management system automatically adjusted in filling amount |
CN106451596A (en) * | 2016-08-05 | 2017-02-22 | 成都雅骏新能源汽车科技股份有限公司 | Integrated type power supply cabinet for electric vehicle |
CN106828014A (en) * | 2017-01-03 | 2017-06-13 | 北京汽车股份有限公司 | Air-conditioning system for vehicle and the vehicle with it |
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US4265597A (en) * | 1978-08-11 | 1981-05-05 | A.R.A. Manufacturing Co. | Blower systems circuit interrupting apparatus and method |
CN102759411A (en) * | 2012-07-16 | 2012-10-31 | 力帆实业(集团)股份有限公司 | Temperature and humidity monitoring system of battery pack |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108773337A (en) * | 2018-05-31 | 2018-11-09 | 北京车和家信息技术有限公司 | Control system for heat management and vehicle |
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CN110329110A (en) * | 2019-08-06 | 2019-10-15 | 江西博能上饶客车有限公司 | A kind of cell safety control system and control method for electric motor coach |
CN110329110B (en) * | 2019-08-06 | 2020-12-04 | 江西博能上饶客车有限公司 | Battery safety control system and control method for electric motor coach |
CN114721445A (en) * | 2022-03-25 | 2022-07-08 | 绍兴拓优智能科技有限公司 | New energy automobile heat management detection system |
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Application publication date: 20171229 |
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