Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Co., Limted

Contemporary Amperex Technology Limited

Chengdu Liang

Qisen Huang

Chunhua Hu

Tiancheng Yi

Huafeng Huang

Qian Liu

Haizu Jin

Yao Jiang

Yonghuang Ye

Shushi Dou

Yingjie Guan

Yan Wen

Yuzhen Zhao

Peipei Chen

Wei Li

Yongsheng Guo

Quanguo Li

Chenghua Fu

Junmin Feng

Xin Liu

Yuqun Zeng

Peng Wang

Qingrui Xue

Zige Zhang

Jing Li

Chengyong Liu

Na Liu

Yongchao Liu

Xinxiang Chen

Hu Xu

Quankun Li

Xiaobo Chen

Kai Wu

Chengyou Xing

Yulian Zheng

Yongshou Lin

Yao Li

Zhijun Guo

Changlong Han

Jiazheng Wang

Shoujun Huang

Yuanbao Chen

Huasheng Su

Xing Li

Yang Zhang

Baisong Chen

Zeli Wu

Xinxin Du

Shiwen Wang

Xiaofu Xu

Lu Miao

Cheng Li

Zijun Xu

Shuojian Su

Changliang Sheng

Wenwei Chen

Mingling Li

Jia Peng

Pengxiang Wang

Hailin Zou

Xia Hu

Ying Wang

Xiqing Wang

Cuiping Zhang

Ming Zhang

Lingyan Jiang

Wenlong Kang

Zuyu Wu

Ningsheng Wu

Xianghui Liu

Bobing Hu

Wenguang Lin

Quan Fan

Jiawei Fu

Wei Fu

Xianwei Yang

Yuepan Hou

Guowei Li

Wei Wang

Chao Yang

Xin Sun

Xiao Wang

YiSong Su

Chuanmiao Yan

Bin Jiang

Tao Zhang

Yiruo Wang

Zhiqiang Li

Yingjie Zhan

Li Hao

Minghao Tang

Bangrun Wang

Haotian Xie

Fajun Huang

Qian Li

Chang Peng

Liye Li

Qinglin Bai

Jiang Lin

This application provides a nonaqueous electrolytic solution, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolytic solution includes a nonaqueous solvent and a lithium salt. The nonaqueous solvent includes a carbonate solvent and a high-oxidation-potential solvent. The carbonate solvent is a chain carbonate, and the high-oxidation-potential solvent is selected from one or more of compounds denoted by Formula I and Formula II. This application improves electrochemical performance of the lithium-ion battery under a high temperature and a high voltage as well as safety performance such as overcharge safety and hot-oven safety of the lithium-ion battery, and also ensures kinetic performance of the lithium-ion battery to some extent.

Nonaqueous electrolytic solution, lithium-ion battery, battery module, battery pack, and apparatus

A positive current collector, a positive electrode plate, a battery, and an apparatus, the positive current collector comprising a support layer, provided with two opposite surfaces in a thickness direction of the support layer, and a conductive layer arranged on at least one of the two surfaces of the support layer, wherein the conductive layer has a thickness Dsatisfying 300 nm≤D≤2 μm; and when the positive current collector has a the tensile strain of 3.0% or more, the conductive layer has a sheet resistance growth rate of T≥50%. The positive current collector has higher safety performance and meanwhile higher electrical performance, and thus a positive electrode plate and a battery adopting the positive current collector could have higher safety performance and meanwhile higher electro-chemical performance.

Positive current collector, positive electrode plate, battery, and apparatus

The present application discloses a positive electrode active material and its preparation method, a sodium ion battery and an apparatus containing the sodium ion battery. The positive electrode active material satisfies a chemical formula NaCuMnMO, wherein M is one or more selected from Li, B, Mg, Al, K, Ca, Ti, V, Cr, Fe, Co, Ni, Zn, Ga, Sr, Y, Nb, Mo, Sn, Ba and W, 0≤x≤0.5, 0.1<h≤2, 1≤k≤3, 0≤l≤0.5, and 0≤y≤1, 2≤h+k+l≤3.5, and 0.57≤(2+x)/(h+k+l)≤0.9.

Positive electrode active material and its preparation method, sodium ion battery and apparatus containing the sodium ion battery

This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous solvent includes a nonaqueous solvent and a lithium slat. The nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, the lithium salt is a mixed lithium salt formed by LiPFand LiN(FSO), and the high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.

Electrolyte comprising nonaqueous solvent and lithium salt

The present disclosure provides a negative electrode active material, a battery and a device. The negative electrode active material comprises a first silicon oxide and a second silicon oxide, wherein, a ratio of a particle diameter Dn10 of the first silicon oxide to a particle diameter Dn10 of the second silicon oxide is 8˜25, the particle diameter Dn10 of the first silicon oxide is 1.0 μm˜5.0 μm, the particle diameter Dn10 of the second silicon oxide is 0.05 μm˜0.50 μm. By selecting two kinds of silicon oxides with specific ranges of Dn10 to match with each other, the present disclosure controls the thickness rebound of negative electrode plate, ensures good electrical contact between the negative electrode active material particles, in turn is beneficial to improve the cycle stability and the cycle-life of the battery.

Negative electrode active material, negative electrode plate and battery

The present application discloses a battery including a battery cell, a thermal management component, an avoidance chamber and a collection chamber. The battery cell includes a pressure relief mechanism; the thermal management component is configured to adjust a temperature of the battery cell; the avoidance chamber is configured to provide a space allowing the pressure relief mechanism to be actuated; and the collection chamber is configured to collect emissions from the battery cell when the pressure relief mechanism is actuated. The thermal management component is configured such that emissions are capable of passing through the thermal management component when the pressure relief mechanism is actuated, and then entering the collection chamber through the avoidance chamber. Therefore, the pressure relief mechanism may not need to be provided on a side of an electrode terminal of the battery cell and emissions relieved by the pressure relief mechanism may be collected.

Battery and related apparatus, production method and production device therefor

The present application provide a silicon-oxygen compound, a secondary battery using it, and related battery modules, battery packs, and devices. The silicon-oxygen compound provided by the present application has a formula of SiO, in which x satisfies 0<x<2. The silicon-oxygen compound contains both sulfur and aluminum element, and the sulfur element is present in an amount of 20 ppm˜300 ppm. The mass ratio of sulfur element to aluminum element is from 1.5 to 13.0. A secondary battery uses the silicon-oxygen compound provided in the present application, so that the secondary battery can have both long-cycle performance and high initial coulombic efficiency.

Silicon-oxygen compound, secondary battery using it, and related battery module, battery pack and device

The present application discloses a silicon-oxygen compound, a method for preparation thereof, and a secondary battery, a battery module, a battery pack and an apparatus related thereto. The silicon-oxygen compound includes both manganese element and a copper element, a content of the manganese element is from 20 ppm to 500 ppm, and a mass ratio of the manganese element to the copper element is from 1 to 18.

Silicon-oxygen compound, method for preparation thereof, and related secondary battery, battery module, battery pack and apparatus

The present disclosure relates to a top cover assembly of a secondary battery and a secondary battery, wherein the top cover assembly includes a top cover plate, provided with a through hole; an electrode terminal, covering the through hole; an insulating plate, wherein at least part of the insulating plate is arranged on a side of the top cover plate away from the electrode terminal; a seal, wherein at least part of the seal is arranged between the top cover plate and the electrode terminal; and an insulator, wherein at least part of the insulator is arranged between the top cover plate and the insulating plate; wherein the insulator and the seal at least jointly enclose a side wall of the through hole and an area, close to the through hole, on an upper surface of the top cover plate.

Top cover assembly of secondary battery and secondary battery

A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm≤D2≤2 μm. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 1 μm to 5.9 μm.

Battery

The present application relates to a battery module including a first-type battery cell and a second-type battery cell at least connected in series, where the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, the first-type battery cell includes N first battery cell(s), and the second-type battery cell includes M second battery cell(s), where N and M are positive integers; and when a battery state of health (SOH) of a first battery cell is the same as an SOH of a second battery cell, and a state of charge (SOC) of the first battery cell is the same as an SOC of the second battery cell, a ratio of a total charge capacity of a first negative electrode sheet of the first battery cell to a total charge capacity of a second negative electrode sheet of the second battery cell is 0.8 to 1.2.

Battery module, battery pack, power consumption apparatus, and manufacturing method and manufacturing device of battery module

This application provides a secondary battery and an apparatus containing the secondary battery. The secondary battery includes an electrolytic solution. The electrolytic solution includes an electrolyte salt and an organic solvent. The electrolyte salt includes lithium bis(fluorosulfonyl)imide (LiFSI) and lithium hexafluorophosphate (LiPF). A volumetric molar concentration of the LiFSI in the electrolytic solution is 0.8 mol/L-1.2 mol/L; and a volumetric molar concentration of the LiPFin the electrolytic solution is 0.15 mol/L-0.4 mol/L. The organic solvent includes ethylene carbonate (EC), and mass percent of the EC in the organic solvent is less than or equal to 20%.

Secondary battery and apparatus containing the secondary battery

An end cover assembly includes: an end cover with a through hole for injecting electrolyte and a first clamping portion, wherein the first clamping portion is disposed along a circumferential direction of the through hole and is located on one side of the end cover away from an interior of the battery cell; a sealing ring for sealing the through hole; and a pressure relief device covering at least part of the sealing ring and closing the through hole; wherein the pressure relief device includes a second clamping portion, and is rotatable such that when the pressure relief device is rotated to a first position, the second clamping portion is clamped with the first clamping portion; and when the pressure relief device is rotated to a second position, the second clamping portion is disengaged from the first clamping portion.

End cover assembly, housing assembly, battery cell, battery, and electric equipment

The present application provides a battery module, an apparatus, a battery pack, and a method and device for manufacturing the battery module. The battery module includes: a first-type battery cell and a second-type battery cell, which are connected in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical system, and the volume energy density of the first-type battery cell is less than the volume energy density of the second-type battery cell; and the capacity Capof the first-type battery cell is greater than the capacity Capof the second-type battery cell. While ensuring the safety performance of the battery module, the service life and the energy throughput of the battery module are effectively improved.

Battery module, apparatus, battery pack, and method and device for manufacturing battery module

The present application relates to a battery module, including a first-type battery cell and a second-type battery cell electrically connected at least in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, the first-type battery cell includes N first battery cell(s), the second-type battery cell includes M second battery cell(s); the first battery cell includes a first negative electrode plate, the second battery cell includes a second negative electrode plate, a ratio of a conductivity of an electrolyte solution (25° C.) of the first battery cell to a coating mass per unit area of the first negative electrode plate is denoted as M1, and a ratio of a conductivity of an electrolyte solution (25° C.) of the second battery cell to a coating mass per unit area of the second negative electrode plate is denoted as M2, M1>M2, and 0.08≤M1≤11, 0.03≤M2≤4.62.

Battery module, battery pack, electrical apparatus, and manufacturing method and manufacturing device of battery module

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Ningde, China

Chengdu Liang