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公开(公告)号：EP4236007A1
公开(公告)日：2023-08-30
申请号：EP21956351.7
申请日：2021-09-08
发明人： HUANG, Shan , LI, Shichao , LI, Haili , ZHAO, Wei , LIN, Zhen
摘要： Embodiments of the present application provide a method for charging a traction battery and a battery management system, which can effectively ensure the safety performance of the battery. The method includes: obtaining a battery parameter of the traction battery, the battery parameter comprising a state of charge SOC and/or an open-circuit voltage OCV; and during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged when the battery parameter of the traction battery changes by a parameter gap value, where when the battery parameter of the traction battery is in a first parameter interval, the parameter gap value is a first preset parameter gap value; and when the battery parameter of the traction battery is in a second parameter interval, the parameter gap value is a second preset parameter gap value, where the first preset parameter gap value is greater than the second preset parameter gap value, and the battery parameter in the first parameter interval is less than that in the second parameter interval.
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公开(公告)号：EP4236006A1
公开(公告)日：2023-08-30
申请号：EP21956350.9
申请日：2021-09-08
发明人： HUANG, Shan , LI, Shichao , LI, Haili , ZHAO, Wei , LIN, Zhen
IPC分类号： H02J7/00
摘要： Embodiments of the present application provide a method for charging a traction battery and a battery management system, where the method includes: obtaining an actual charging current of a traction battery during a charging process of the traction battery; and determining, based on a degree of the actual charging current exceeding a requested charging current, whether to control the traction battery to be discharged. The method and the battery management system in the embodiments of the present application can improve the safety performance of the traction battery.
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3.发明公开
公开(公告)号：EP4394346A1
公开(公告)日：2024-07-03
申请号：EP23818840.3
申请日：2023-04-25
发明人： SUN, Long , XIE, Lan , WANG, Chenping , WU, Xiaohui , LIN, Zhen
摘要： This application relates to a liquid leak detection method and apparatus, a battery control unit, and a battery management system. The method includes: obtaining a gas concentration detection signal output separately by a plurality of target gas sensors in a battery box, where the gas concentration detection signal is used for indicating a measured gas concentration; obtaining position information of each target gas sensor in the battery box; and determining a leaking region in the battery box based on the gas concentration detection signal and the position information of each target gas sensor. To sum up, in an embodiment of this application, the leaking region in the battery box can be located by analyzing the gas concentration detection signals and position information of a plurality of target gas sensors in the battery box, so that prompt information used for indicating the leaking region can be output subsequently. In this way, maintenance personnel or a user of a vehicle containing the battery box can quickly and accurately locate the leaking region and take corresponding measures, thereby improving maintenance efficiency.
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公开(公告)号：EP4366119A1
公开(公告)日：2024-05-08
申请号：EP22942078.1
申请日：2022-05-19
IPC分类号： H02J7/00
CPC分类号： H02J7/00
摘要： A charging method (200), a battery management system (122), a battery (121), and a charging device (110) can effectively remove metal already precipitated on a negative electrode of a battery and metal precipitated in a charging process to ensure the safety performance of the battery. The charging method (200) includes: sending (S210) a first command to a charging device, the first command being used to control the charging device to output an oscillation current to the battery during a first time period in a charging process, where the oscillation current includes n cycle periods, n being a positive integer greater than 1, each of the cycle periods includes a first sub-period and a second sub-period, a current output by the charging device during the first sub-period is a first current, a current output by the charging device during the second sub-period is a second current, and a direction of the first current is opposite to that of the second current; and sending (S220) a second command to the charging device, the second command being used to instruct the charging device to charge the battery during a second time period in the charging process.
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5.发明公开
公开(公告)号：EP4270027A1
公开(公告)日：2023-11-01
申请号：EP21960254.7
申请日：2021-10-14
发明人： XIE, Lan , LIN, Zhen , HUANG, Shan , LI, Wei , LI, Zhonghong
摘要： Embodiments of the present application provide a detection method and detection device for a battery, a battery management system, and a storage medium, which can easily and accurately detect an internal short circuit in a battery and give a warning. The method includes: acquiring a current voltage of a battery; sending a charging request to a charging device, the charging request including a requested voltage, the charging request being used to request the charging device to output the requested voltage to the battery, where the requested voltage is smaller than the current voltage; acquiring a current of the battery within a duration in which the charging device outputs the requested voltage to the battery; and determining an internal short circuit condition of the battery according to the current.
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6.发明公开
公开(公告)号：EP4403943A1
公开(公告)日：2024-07-24
申请号：EP21969324.9
申请日：2021-12-28
发明人： XIE, Lan , LIN, Zhen , XU, Guangyu , YANG, Xinfeng
IPC分类号： G01R31/3835 , G01R31/36 , H01M10/42
CPC分类号： G01R31/3835 , H01M10/42 , G01R31/36
摘要： The embodiments of the present disclosure relate to the field of battery technology, and provide a battery lithium plating detection method, device, management system, battery and electric device. The lithium plating detection method includes: charging a to-be-tested battery and stopping charging after the to-be-tested battery has been charged to a first state of charge (SOC), and allowing the to-be-tested battery to rest; obtaining a first voltage of the to-be-tested battery upon completion of electrochemical equilibrium; collecting a second voltage of the to-be-tested battery; and determining that lithium plating has occurred in the to-be-tested battery in case where a difference between the second voltage and the first voltage is greater than a first voltage threshold. By means of the above, it is possible to detect whether lithium plating has occurred in a battery, and the detection efficiency is high, such that long-time lithium plating may be avoided from forming lithium dendrite to pierce the separator and result in short circuit and thermal runaway of the battery, and improve battery safety.
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7.发明公开
公开(公告)号：EP4290244A1
公开(公告)日：2023-12-13
申请号：EP21963708.9
申请日：2021-11-15
发明人： XIE, Lan , LIN, Zhen , XU, Guangyu , SONG, Shuai
IPC分类号： G01R19/165 , G01R31/36 , G01R31/385 , H01M10/42
摘要： The present application discloses a lithium precipitation detection method for a battery pack, a computer-readable storage medium, and a power consuming apparatus, where the lithium precipitation detection method includes: sending, when a battery management module in the battery pack determines that a change in a charging voltage of the battery pack meets a predetermined condition, a charging request containing a first current to a charging pile for charging, and controlling the battery pack to be charged with the first current for a first predetermined duration and a second predetermined duration, where the first predetermined duration is equal to the second predetermined duration; obtaining, by the battery management module, a first voltage change amount within the first predetermined duration and a second voltage change amount within the second predetermined duration; and determining, when the battery management module determines that a difference between the second voltage change amount and the first voltage change amount is greater than a predetermined voltage threshold, that lithium precipitation occurs in the battery pack. The present application can detect lithium precipitation in the battery pack in a timely, simple, and efficient manner without substantially affecting the charging efficiency of the battery pack.
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公开(公告)号：EP4280340A1
公开(公告)日：2023-11-22
申请号：EP21962957.3
申请日：2021-11-05
发明人： XIE, Lan , LIN, Zhen , HUANG, Shan , LI, Wei , LI, Shichao
摘要： The present application discloses a charging method for a battery pack, a computer-readable storage medium, and a power consuming apparatus. The charging method includes: sending, by a battery management module in the battery pack, a charging request for a first current to a charging pile for charging; controlling, when the battery management module determines that first-current charging of the battery pack meets a first predetermined condition, the battery pack to perform pulse discharge; and controlling, when the battery management module determines that pulse discharge of the battery pack meets a second predetermined condition, the battery pack to stop discharging, and sending a charging request for a second current to the charging pile for charging, where the second current is less than the first current. In the charging method for a battery pack according to embodiments of the present application, pulse discharge is performed at the moment of switching a charging current in a charging process, thereby effectively promoting the tip of precipitated lithium metal to re-enter an electrolyte, flattening lithium dendrites, and inhibiting the continuous accumulation of lithium dendrites, and improving the charging safety of the battery pack.
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9.发明公开
公开(公告)号：EP4243151A1
公开(公告)日：2023-09-13
申请号：EP22899605.4
申请日：2022-01-05
IPC分类号： H01M10/0567 , H01M10/0569 , H01M10/052 , H01M10/0525
摘要： The present application provides an electrolyte for preventing erosion of a positive electrode material and dissolution of a transition metal, and a secondary battery using the electrolyte. The electrolyte comprises an organic solvent and one or more of a compound (A) represented by the above general formula (I) or general formula (II), wherein the content of the compound (A) in the electrolyte is 0.01 wt%-5 wt% and the content of ethylene carbonate in the organic solvent is less than or equal to 3 wt%. The secondary battery of the present invention has an excellent cycling life and storage performance under high voltage operating conditions.
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公开(公告)号：EP4231484A1
公开(公告)日：2023-08-23
申请号：EP21956352.5
申请日：2021-09-08
发明人： HUANG, Shan , LI, Shichao , LI, Haili , ZHAO, Wei , LIN, Zhen
摘要： Provided in the embodiments of the present application are a power battery charging method and a battery management system, which can effectively guarantee the safety performance of a battery. The method comprises: acquiring the temperature and a battery parameter of a power battery, wherein the battery parameter comprises a state of charge (SOC) and/or an open circuit voltage (OCV); determining a parameter threshold value according to the temperature of the power battery; and during the charging of the power battery, controlling the power battery to discharge or stop charging when the battery parameter of the power battery is greater than or equal to the parameter threshold value and the battery parameter of the power battery changes by a parameter interval value.
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