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1. 发明公开

EP3570405A1 DEVICE AND METHOD FOR CONTROLLING DISCHARGE 有权转让
公开(公告)号：EP3570405A1
公开(公告)日：2019-11-20
申请号：EP18791812.3
申请日：2018-01-23
申请人： LG Chem, Ltd.
发明人： SONG, Jun Hyuk , NOH, Suk In , KIM, Eun Kyung , LEE, Joo Sung
IPC分类号： H02J7/00 , H01M10/44 , G01R31/36
摘要： The present disclosure relates to a device for controlling discharge and method, and more particularly, to a device for controlling discharge and method for adjusting a final discharge voltage in accordance with a battery to extend the life of the battery than ever.

2. 发明公开

EP3518381A1 METHOD FOR CHARGING SECONDARY BATTERY 有权转让
公开(公告)号：EP3518381A1
公开(公告)日：2019-07-31
申请号：EP18764928.0
申请日：2018-03-09
申请人： LG Chem, Ltd.
发明人： SONG, Jun Hyuk , LEE, Joo Sung
IPC分类号： H02J7/00
摘要： Provided is a method of charging a secondary battery, wherein there are charging sections by preset C-rates, and constant current-constant voltage (CC-CV) charging is performed in each of the charging sections, wherein the charging section includes: a first charging section in which a CC-charging is performed as a first C-rate (C1) is supplied until the voltage of the secondary battery reaches a first charging cutoff voltage (V1), and a CV-charging is performed as the charging C-rate gradually decreases if reaching the first charging cutoff voltage (V1); a second charging section in which a CC-charging is performed as a second C-rate (C2) is supplied until the voltage of the secondary battery reaches a second charging cutoff voltage (V2), and a CV-charging is performed as the charging C-rate gradually decreases if reaching the second charging cutoff voltage (V2); and a third charging section in which a CC-charging is performed as a third C-rate (C3) is supplied until the voltage of the secondary battery reaches a third charging cutoff voltage (V3), and a CV-charging is performed as the charging C-rate gradually decreases if reaching the third charging cutoff voltage (V3), wherein the charging cutoff voltage satisfies the V1 = n-(0.25-0.15), V2 = n-(0.2-0.1), and V3 = n (here, 'n' is an electric potential at the full charge of the secondary battery), and V1

3. 发明公开

EP3605670A2 METHOD FOR FORMING LITHIUM METAL AND INORGANIC MATERIAL COMPOSITE THIN FILM AND METHOD FOR PRE-LITHIATION OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY BY USING SAME 有权转让
公开(公告)号：EP3605670A2
公开(公告)日：2020-02-05
申请号：EP18843393.2
申请日：2018-08-03
申请人： LG Chem, Ltd.
发明人： WOO, SangWook , KIM, Eun Kyung , KANG, Yoon Ah , SONG, Jun Hyuk , CHAE, Oh Byong
IPC分类号： H01M4/139 , H01M4/1391 , H01M4/04 , H01M10/0525
摘要： The present invention relates to a method for pre-lithiation of a negative electrode, the method comprising: a first step for introducing an inorganic material powder into molten lithium to form a mixture; a second step for extruding and cooling the mixture, thereby preparing a lithium metal-inorganic material composite ribbon with a thickness of 100-200 µ m; a third step for rolling the lithium metal-inorganic material composite ribbon to prepare a lithium metal-inorganic material composite thin film; and a fourth step for placing the lithium metal-inorganic material composite thin film on a surface of a negative electrode to form a lithium metal-inorganic material composite layer. In the present invention, the lithium metal-inorganic material composite thin film is joined to the negative electrode, thereby minimizing the exposure time of lithium to the air, and therefore, the present invention has an effect of solving a problem of the deterioration of lithium during application of a mixture slurry, due to high reactivity of the lithium metal, in the application of a conventional lithium metal-inorganic material mixture. A negative electrode for a secondary battery, manufactured by the method for pre-lithiation provided in the present invention, has improved initial irreversibility, and a secondary battery manufactured using such a negative electrode for a secondary battery has excellent charging and discharging efficiency.

4. 发明授权

EP3301743B1 METHOD OF MANUFACTURING NEGATIVE ELECTRODE 有权转让
公开(公告)号：EP3301743B1
公开(公告)日：2019-04-10
申请号：EP17753422.9
申请日：2017-02-13
申请人： LG Chem, Ltd.
发明人： SONG, Jun Hyuk , KIM, Eun Kyung , CHUNG, Ju Ho
IPC分类号： H01M4/139 , H01M4/587 , H01M4/04 , H01M4/133 , H01M4/62 , H01M2/10 , H01M4/1393 , H01M10/0525

5. 发明公开

EP3301743A1 NEGATIVE ELECTRODE MANUFACTURING METHOD AND NEGATIVE ELECTRODE 有权转让
标题翻译：负电极制造方法和负电极
公开(公告)号：EP3301743A1
公开(公告)日：2018-04-04
申请号：EP17753422.9
申请日：2017-02-13
申请人： LG Chem, Ltd.
发明人： SONG, Jun Hyuk , KIM, Eun Kyung , CHUNG, Ju Ho
IPC分类号： H01M4/139 , H01M4/587 , H01M4/04 , H01M4/133 , H01M4/62 , H01M2/10
CPC分类号： H01M4/0404 , G01R31/3641 , H01M4/043 , H01M4/133 , H01M4/1393 , H01M4/587 , H01M10/0525 , H01M2004/021 , H01M2004/027
摘要： The present invention relates to a method of manufacturing a negative electrode and a negative electrode manufactured using the method. In particular, provided herein are a method of manufacturing a negative electrode, including: a first process of fabricating a plurality of negative electrode samples including active material layers having the same composition and having different electrode densities; a second process of measuring a negative electrode expansion curve of each negative electrode sample according to a state of charge (SOC) at a 1 st charging cycle; a third process of measuring a difference between slopes of tangents to the curve at x-5 and x+5, assuming that a SOC value, at which a slope of a tangent to the measured negative electrode expansion curve is 1, is x where x
According to the present invention, negative electrode samples are fabricated to have different electrode densities, and then, in a negative electrode expansion curve of each negative electrode sample according to the 1 st charging, when a change in slopes of tangents to the negative electrode expansion curve at an initial state of charge (SOC) of less than 50%, at which the expansion curve increases, satisfies a particular value, a secondary battery manufactured including a negative electrode having the electrode density may exhibit excellent lifespan characteristics and excellent initial efficiency for the corresponding active material.
摘要翻译：本发明涉及制造使用该方法制造的负极和负极的方法。特别地，本文提供了一种制造负极的方法，包括：第一工艺，制造包括具有相同组成并具有不同电极密度的活性材料层的多个负极样品; 根据第一充电周期中的充电状态（SOC）测量每个负电极样品的负电极膨胀曲线的第二过程; 假定在测量的负电极膨胀曲线的切线的斜率为1时的SOC值是x，其中x是x-5和x + 5处测量曲线的切线的斜率之间的差的第三过程 <50; 选择最佳电极密度使得所测量的斜率差满足0至0.5的范围的第四过程; 以及在满足选择的最佳电极密度的条件下制造负极的第五工艺以及使用该方法制造的负极。根据本发明，负极样品被制造成具有不同的电极密度，然后，在根据第一次充电的每个负极样品的负极展开曲线中，当相对于负极展开曲线的切线的斜率的变化在其中膨胀曲线增大的小于50％的初始荷电状态（SOC）满足特定值的情况下，包括具有电极密度的负电极制造的二次电池可以表现出优异的寿命特性和优异的初始效率相应的活性物质。

6. 发明公开

EP3770998A1 NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE COMPRISING NEGATIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE 有权转让
公开(公告)号：EP3770998A1
公开(公告)日：2021-01-27
申请号：EP19803852.3
申请日：2019-05-09
申请人： LG CHEM, LTD.
发明人： SONG, Jun Hyuk , CHAE, Oh Byong , KIM, Je Young , LEE, Yong Ju
IPC分类号： H01M4/36 , H01M4/38 , H01M4/485 , H01M4/58 , H01M10/052
摘要： A negative electrode active material including a core including silicon, and a coating layer disposed on the core and including a coating material, wherein the coating material includes at least one selected from the group consisting of Li a V b O 2 and MgH 2 , wherein 0.5

7. 发明公开

EP3591742A1 PRE-LITHIATION APPARATUS, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE PART USING SAME, AND NEGATIVE ELECTRODE PART 审中-实审转让
公开(公告)号：EP3591742A1
公开(公告)日：2020-01-08
申请号：EP17904750.1
申请日：2017-12-29
申请人： LG Chem, Ltd.
发明人： CHAE, Oh Byong , KANG, Yoon Ah , SONG, Jun Hyuk , KIM, Eun Kyung , WOO, Sang Wook
IPC分类号： H01M4/04 , H01M4/1391 , H01M4/131
摘要： A pre-lithiation apparatus according to an embodiment of the present invention may be used to reduce a process time for pre-lithiating a negative electrode when compared with the related art, and thus, to improve a production rate. Also, a lithium roll may include an elastic member to uniformly perform the lithiation without a gap.

8. 发明公开

EP3584861A1 NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY INCLUDING SAME 有权转让
公开(公告)号：EP3584861A1
公开(公告)日：2019-12-25
申请号：EP18855269.9
申请日：2018-09-14
申请人： LG Chem, Ltd.
发明人： SONG, Jun Hyuk , LEE, Joo Sung , KIM, Eun Kyung
IPC分类号： H01M4/133 , H01M2/16 , H01M10/0525
摘要： Provided are a negative electrode for a lithium secondary battery having reinforced insulating properties, which comprises a negative electrode active material layer; and a ceramic separating layer formed on the negative electrode active material layer, wherein the negative electrode active material layer has an arithmetic average surface roughness (Ra) of 0.01 µm to 0.3 µm, and the ceramic separating layer has a thickness of 1 µm to 30 µm, and a lithium secondary battery comprising the same.

9. 发明公开

EP3570349A1 PRE-LITHIATION USING LITHIUM METAL AND INORGANIC MATERIAL COMPOSITE LAYER 有权转让
公开(公告)号：EP3570349A1
公开(公告)日：2019-11-20
申请号：EP18844158.8
申请日：2018-07-24
申请人： LG Chem, Ltd.
发明人： WOO, Sang Wook , KIM, Eun Kyung , KANG, Yoon Ah , SONG, Jun Hyuk , CHAE, Oh Byong
IPC分类号： H01M4/139 , H01M4/1391 , H01M10/0525 , H01M4/04
摘要： The present invention provides a method of pre-lithiating a negative electrode for a secondary battery, including: pouring and disperse lithium metal powder, inorganic powder and a binder in a solvent to thereby prepare a mixed solution; and forming a lithium metal-inorganic composite layer on the negative electrode by using the mixed solution.
The present invention provides a method for pre-lithiating a negative electrode having a high capacity by a simple process. Further, a negative electrode for a secondary battery manufactured through the pre-lithiation method provided in the present invention has an improved initial irreversibility, and secondary batteries manufactured using such a negative electrode for a secondary battery have excellent charge/discharge efficiency.

10. 发明公开

EP3565035A2 LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR 有权转让
公开(公告)号：EP3565035A2
公开(公告)日：2019-11-06
申请号：EP18832631.8
申请日：2018-07-06
申请人： LG Chem, Ltd.
发明人： CHAE, Oh Byong , KANG, Yoon Ah , SONG, Jun Hyuk , KIM, Eun Kyung , WOO, Sang Wook
IPC分类号： H01M4/139 , H01M4/04 , H01M10/052 , H01M10/42
摘要： A lithium secondary battery including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, wherein the negative electrode is lithiated by pre-lithiation, a total capacity of a negative electrode active material of the negative electrode is larger than a total capacity of a positive electrode active material of the positive electrode, and a charge capacity of the negative electrode is smaller than a charge capacity of the positive electrode by the pre-lithiation.

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