-
公开(公告)号：US12074299B2
公开(公告)日：2024-08-27
申请号：US18482864
申请日：2023-10-07
申请人： Shanghai Makesens Energy Storage Technology Co., Ltd. , Shanghai Volta Institute of Digital Battery Energy Storage
发明人： Pei Song , Guopeng Zhou , Jian Zhao , Zonglin Cai , Xiao Yan , Enhai Zhao , Yan Ma , Yunkai Wu
CPC分类号： H01M10/4257 , H01M10/441 , H01M10/443 , H02J7/0019 , H02M3/1582 , H01M2010/4271
摘要： An ASIC chip for performing active battery equalization is provided. The ASIC chip for performing active battery equalization includes: a power conversion module, an equalization switch matrix circuit module comprising a power MOS transistor, a switch control module, a temperature protection module, and a communication interface module. By connecting and controlling the above modules, the equalization switch matrix circuit module performs equalization on a battery in the battery pack. That is, the use of the integrated ASIC chip accelerates and facilitates the BMS solution manufacturers adding the active equalization function, and facilitates the BMS Battery management system effectively improving the service performance and life of lithium batteries.
-
2.发明公开公开(公告)号：US20240069103A1
公开(公告)日：2024-02-29
申请号：US18238571
申请日：2023-08-28
发明人： Pingchao Hao , Zhou Yang , Zhimin Zhou , Enhai Zhao , Xiao Yan
IPC分类号： G01R31/367 , G06F30/20
CPC分类号： G01R31/367 , G06F30/20
摘要： The invention discloses a method, a system, and a storage medium for simulating a data set based on an electrochemical model. The method includes the following steps: setting geometric parameters and electrochemical parameters of a lithium battery; generating a volume average concentration of positive lithium ions and a volume average concentration of negative lithium ions under a preset state of charge through a simulation of the electrochemical model; calculating a capacity of the lithium battery through the simulation of the electrochemical model; after adjusting a current state of charge of the lithium battery, inputting a simulated operating current to acquire a simulated data set. The invention can generate operating data of a virtual battery by adjusting lithium battery electrochemical model parameters, facilitating management by a BMS system of battery operating states based on an electrochemical model of a virtual battery.
-
3.发明公开公开(公告)号：US20240005068A1
公开(公告)日：2024-01-04
申请号：US18208416
申请日：2023-06-12
发明人： Pingchao Hao , Zhimin Zhou , Zhou Yang , Xiao Yan , Enhai Zhao
IPC分类号： G06F30/27
CPC分类号： G06F30/27
摘要： The invention provides a method and a system of working condition sensitivity analysis and data processing for parameter identification and/or for training a parameter identification neural network. The method includes according to a selected reference voltage interval, obtaining a voltage data set corresponding to electrochemical model parameters in the reference voltage interval; normalizing voltage values of the voltage data set to obtain a characteristic voltage data set, wherein the number of voltage values corresponding to different electrochemical model parameters in the characteristic voltage data set is equal; and inputting the characteristic voltage data set into a neural network model, and outputting initial values of the electrochemical model parameters to analyze the working condition sensitivity by taking the electrochemical model parameters as labels. The electrochemical model parameters include high sensitivity parameters.
-
4.发明公开公开(公告)号：US20230280404A1
公开(公告)日：2023-09-07
申请号：US18115130
申请日：2023-02-28
发明人： Pingchao Hao , Danfei Gu , Xiao Yan , Enhai Zhao , Pei Song , Peng Ding , Weikun Wu , Xiaohua Chen
IPC分类号： G01R31/367 , G01R31/3842
CPC分类号： G01R31/367 , G01R31/3842 , H02J7/0048
摘要： The invention provides method and device for battery state-of-charge (SOC) estimation. The method comprises establishing an electrochemical model for a battery; setting an initial value of the current SOC of the battery, and determining an initial distribution of solid-phase lithium ion concentrations in the electrochemical model according to the initial value of the SOC; performing a charge/discharge test on the battery, collecting measured voltage and current of the battery after a first time interval; calculating an output voltage and a distribution of the solid-phase lithium ion concentrations at a current acquisition time based on the measured current and the initial distribution of the solid-phase lithium ion concentrations; and when a voltage difference between the output voltage and the measured voltage is within a preset range, estimating the current SOC value of the battery based on the distribution of the solid-phase lithium ion concentration at the current acquisition time.
-
5.发明公开公开(公告)号：US20240135060A1
公开(公告)日：2024-04-25
申请号：US18379334
申请日：2023-10-12
发明人： Mingchen Jiang , Danfei Gu , Siyuan Chen , Qian Li , Liangchang Wei , Xiao Yan , Enhai Zhao
IPC分类号： G06F30/20
CPC分类号： G06F30/20 , H01M10/0525
摘要： The invention provides a method and system for decoupling electric field of electrochemical model based on a parallel targeting method. The method includes selecting a negative or positive electrode region as a calculation region; selecting a solid or liquid phase current as an observed quantity, and a solid and liquid phase potential as a costate variable; inserting nodes between two endpoints of the calculation region, and determining a target value of the observed quantity of each node; constructing N calculation units; respectively performing a target shooting on the N calculation units; and determining whether a distance between the target shooting value of the observed quantity of the end point of each calculation unit and the target value of the observed quantity of the node corresponding to the end point of the calculation unit is within a preset range.
-
6.发明公开公开(公告)号：US20240110986A1
公开(公告)日：2024-04-04
申请号：US18371595
申请日：2023-09-22
发明人： Pingchao Hao , Xuesi Zhang , Zhimin Zhou , Zhou Yang , Guopeng Zhou , Enhai Zhao , Xiao Yan , Jie Zhang
IPC分类号： G01R31/374 , G01R31/367 , G01R31/3835 , G01R31/392
CPC分类号： G01R31/374 , G01R31/367 , G01R31/3835 , G01R31/392
摘要： The invention provides a method and system for identifying electrochemical model parameters based on capacity change rate. The method includes: acquiring operating data from an actual operation process of a lithium battery and cleaning an actual operating data set from the operating data; generating a simulated operating data set through simulation of a preset electrochemical model; performing parameter identification based on a preset first loss function, the actual operating data set, and the simulated operating data set; calculating capacity convergence coefficient; comparing capacity convergence coefficient with a preset convergence threshold value; when greater than the preset convergence threshold value, regenerating the simulated operating data set; and when not greater than the preset convergence threshold value, outputting an electrochemical model parameter set as a parameter identification result. The invention introduces capacity change rate into the parameter identification process for lithium battery electrochemical models, improving accuracy of parameter identification.
-
7.发明公开公开(公告)号：US20230417834A1
公开(公告)日：2023-12-28
申请号：US18208372
申请日：2023-06-12
发明人： Pingchao Hao , Zhiyi Zhang , Yanan Guo , Xiao Yan , Enhai Zhao , Zhou Yang , Zhimin Zhou , Xiaohua Chen
IPC分类号： G01R31/367 , G01R31/388
CPC分类号： G01R31/367 , G01R31/388
摘要： The invention discloses a method, a system and a storage medium for solid-phase concentration correction of a lithium battery. The method includes establishing an electrochemical model of the lithium battery; initializing a solid phase concentration in the electrochemical model to be a first solid phase concentration; simulating the simulated output voltage of the lithium battery in a preset period according to the electrochemical model, the preset current and the first solid-phase concentration; acquiring the actual output voltage of the lithium battery in the preset period; calculating an error coefficient between the simulation output voltage and the actual output voltage, and presetting an error threshold corresponding to the error coefficient; and when the error coefficient is greater than the error threshold, performing iterative correction on the first solid phase concentration until the error coefficient is not greater than the error threshold, and outputting the corrected second solid phase concentration.
-
公开(公告)号：US20230408584A1
公开(公告)日：2023-12-21
申请号：US18206669
申请日：2023-06-07
发明人： Danfei Gu , Mingchen Jiang , Siyuan Chen , Xiao Yan , Enhai Zhao , Peng Ding , Pei Song , Weikun Wu , Xiaohua Chen
IPC分类号： G01R31/367 , G01R31/378
CPC分类号： G01R31/367 , G01R31/378
摘要： The invention provides an electrochemical model based method for early warning for a lithium battery, including establishing a three-dimensional electrochemical model for the lithium battery, and dividing the lithium battery into three portions respectively including a positive electrode, a negative electrode and a separator; performing spatial discretization on the three-dimensional electrochemical model according to a preset accuracy to establish the four-dimensional spatial coordinates of the lithium battery; obtaining a current lithium ion concentration in each position of the lithium battery by simulation based on the four-dimensional space coordinates, a historical lithium ion concentration and a historical diffusion coefficient of the lithium battery; and performing early warning for the lithium battery according to the current lithium ion concentration in each position. The method adopts the volumetric SOC or surface SOC of the lithium battery for operation management, which is direct and objective, and can be is applied to most external environments.
-
公开(公告)号：US20230384384A1
公开(公告)日：2023-11-30
申请号：US18198332
申请日：2023-05-17
发明人： Pingchao Hao , Weikun Wu , Xiaohua Chen , Danfei Gu , Xiao Yan , Enhai Zhao , Pei Song , Peng Ding
IPC分类号： G01R31/3835 , H01M10/44 , H02J7/00 , G01R31/367
CPC分类号： G01R31/3835 , H01M10/44 , H02J7/0047 , G01R31/367
摘要： The invention discloses a method and a device for detecting the lithium intercalation amounts of lithium ion battery electrodes and a battery management system therewith. The method comprises acquiring lithium intercalation ranges of electrodes; obtaining a first characteristic point and a second characteristic point on the characteristic curves of electrode potentials; obtaining a small current rate charging and discharging curve; calculating the charging capacity-open circuit voltage curve; obtaining the third characteristic point and the fourth characteristic point on the charging capacity-open circuit voltage curve; and calculating the amounts of the lithium intercalations of the positive and negative electrodes based on relationships of the characteristic points, the electrode lithium intercalations and the charging capacity The invention can realize nondestructive detection of the amounts of lithium intercalation in the positive and negative electrodes of the lithium-ion battery without disassembly of the lithium-ion battery.
-
10.发明公开公开(公告)号：US20230236265A1
公开(公告)日：2023-07-27
申请号：US18101237
申请日：2023-01-25
发明人： Weikun Wu , Peng Ding , Danfei Gu , Pingchao Hao , Pei Song , Xiao Yan , Enhai Zhao , Xiaohua Chen , Guopeng Zhou , Mingchen Jiang , Longfei Ye
IPC分类号： G01R31/396 , G01R31/367 , G01R31/392 , G01R31/388
CPC分类号： G01R31/396 , G01R31/367 , G01R31/392 , G01R31/388
摘要： The invention provides a method, a system and a terminal device for analyzing states of battery packs in a battery cluster. The method includes acquiring cell voltages of each battery pack in the battery cluster within a preset time; performing data cleaning on the acquired cell voltages; calculating a voltage standard score of each cell based on the cell voltages after data cleaning; calculating a mean value and a standard deviation of said voltage standard score; for each battery pack, plotting scattered points based on the mean value and the standard deviation, and performing closed curve fitting to the scattered points to obtain a closed curve; and analyzing the state of the battery pack based on the closed curve.
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.022 秒)
