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1. WO2022007501 - SELF-HEATING CONTROL METHOD AND APPARATUS FOR POWER BATTERY

Publication Number WO/2022/007501
Publication Date 13.01.2022
International Application No. PCT/CN2021/093844
International Filing Date 14.05.2021
IPC
H01M 10/615 2014.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
60Heating or cooling; Temperature control
61Types of temperature control
615Heating or keeping warm
H01M 10/625 2014.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
60Heating or cooling; Temperature control
62specially adapted for specific applications
625Vehicles
H01M 10/637 2014.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
60Heating or cooling; Temperature control
63Control systems
637characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
H02P 23/14 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
23Arrangements or methods for the control of AC motors characterised by a control method other than vector control
14Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
B60L 58/27 2019.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION 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
58Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
10for monitoring or controlling batteries
24for controlling the temperature of batteries
27by heating
CPC
B60L 15/20
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
15Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
20for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60L 2240/425
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2240Control parameters of input or output; Target parameters
40Drive Train control parameters
42related to electric machines
425Temperature
B60L 58/27
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
58Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
10for monitoring or controlling batteries
24for controlling the temperature of batteries
27by heating
B60Y 2200/91
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
2200Type of vehicle
90Vehicles comprising electric prime movers
91Electric vehicles
G01R 31/34
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
34Testing dynamo-electric machines
G01R 31/343
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
34Testing dynamo-electric machines
343in operation
Applicants
  • 宁德时代新能源科技股份有限公司 CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED [CN]/[CN]
Inventors
  • 黄孝键 HUANG, Xiaojian
  • 但志敏 DAN, Zhimin
  • 李宝 LI, Bao
  • 左希阳 ZUO, Xiyang
Agents
  • 北京维飞联创知识产权代理有限公司 BEIJING WEIFEI LIANCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD.
Priority Data
202010664362.610.07.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) SELF-HEATING CONTROL METHOD AND APPARATUS FOR POWER BATTERY
(FR) PROCÉDÉ ET APPAREIL DE COMMANDE D'AUTOCHAUFFAGE POUR UNE BATTERIE D'ALIMENTATION
(ZH) 动力电池自加热控制方法以及装置
Abstract
(EN) A self-heating control method and apparatus for a power battery. The method comprises: acquiring a second temperature of a rotor at the current sampling time according to system parameters and a first temperature of the rotor at the previous sampling time (S201); estimating a third temperature of the rotor at the next sampling time according to the first temperature and the second temperature (S202); and when the third temperature reaches a demagnetization temperature of the rotor, stopping the self-heating of a power battery (S204). By means of estimating a temperature of a rotor when same is in a self-heating working condition, and comparing the temperature of the rotor with a demagnetization temperature of the rotor, whether to stop the self-heating of a power battery is determined, and self-heating control over the power battery is then realized.
(FR) Procédé et appareil de commande d'autochauffage pour une batterie d'alimentation. Le procédé consiste à : acquérir une deuxième température d'un rotor à l'instant d'échantillonnage actuel selon des paramètres de système et une première température du rotor à l'instant d'échantillonnage précédent (S201) ; estimer une troisième température du rotor à l'instant d'échantillonnage suivant selon la première température et la deuxième température (S202) ; et lorsque la troisième température atteint une température de démagnétisation du rotor, arrêter l'autochauffage d'une batterie d'alimentation (S204). Au moyen de l'estimation d'une température d'un rotor lorsque celui-ci est dans un état de fonctionnement à autochauffage, et de la comparaison de la température du rotor avec une température de démagnétisation du rotor, il est déterminé s'il faut arrêter l'autochauffage d'une batterie d'alimentation, et une commande d'autochauffage sur la batterie d'alimentation est ensuite exécutée.
(ZH) 一种动力电池自加热控制方法以及装置,根据系统参数和转子在前一采样时间的第一温度获取转子在当前采样时间的第二温度(S201),并根据第一温度和第二温度估算转子在后一采样时间的第三温度(S202),在第三温度达到转子的退磁温度时,停止动力电池自加热(S204)。通过估算转子处于自加热工况下的转子温度,并将转子温度与转子的退磁温度进行比较,确定是否停止动力电池自加热,进而实现动力电池自加热控制。
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