Contemporary Amperex Technology Co., Ltd.

Gs Yuasa International Ltd.

Xiamen Tungsten Co., Ltd.

Xtc New Energy Materials (xiamen) Co., Ltd.

Zhen Lin

Tadashi Kakeya

Manabu Kanemoto

Shichao Li

Mitsuhiro Kodama

Wei Zhao

Guangyu Xu

Shan Huang

Haili Li

Daisuke Okuda

Lan Xie

Peng Zhang

Guozhen Wei

Nengjian Xie

Jinhong Yang

Wenlian Qian

Leiying Zeng

Bolie Yu

Long Jiang

Shuai Song

Yimin Wei

Xingsheng Wei

The present invention discloses a lithium ion battery with high capacity, which comprises an cathode material, a anode material and an electrolyte. The cathode material has a chemical formula LiNiMeO, wherein x is 10to 10, and Me is a third metal other than Li and Ni. Said material has the advantages of high purity, high density and high delithiation capacity. The preparation method of the cathode material comprises: subjecting a nickel salt and an additive to chemical co-precipitation, calcining, and inducing of a crack structure with an inducing environment, an inducing chemical, or a combination thereof to give a precursor, which is mixed with LiO, sintered and crushed to give the cathode material. Through the inducing effect of the inducing environment or the inducing chemical, the crystal structure is changed, cracks are formed, and the volume of the crystal cell is further enlarged, so that lithium ions can react with NiO more sufficiently, thereby reducing the segregation, improving the purity and density of the prelithiating material, improving the delithiation capacity, and improving the overall electric capacity of the lithium ion battery.

Lithium ion battery with high capacity

A lithium precipitation detection method may include: 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.

Lithium precipitation detection method for battery pack, computer-readable storage medium, and power consuming apparatus

A method for charging a traction battery includes obtaining a battery parameter of the traction battery that includes a state of charge and/or an open-circuit voltage, and, during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter changing by a parameter gap value. The parameter gap value is a first preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a first parameter interval, and is a second preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a second parameter interval. 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 the battery parameter in the second parameter interval.

Method for charging traction battery and battery management system

The present application discloses a method, apparatus, device and medium for estimating performance parameters of a battery. The method for estimating performance parameters of a battery includes: generating a first curve segment to be calibrated during a process of adjusting a battery capacity in a first capacity interval with a first capacity value as an endpoint value; determining, in a preset reference curve, a first target curve segment that matches the first curve segment to be calibrated; determining a SOC interval corresponding to the first target curve segment as a SOC interval of the first curve segment to be calibrated; and estimating the performance parameters of the battery based on the SOC interval of the first curve segment to be calibrated, the performance parameters include a current SOC and/or a current battery capacity.

Method, apparatus, device and medium for estimating performance parameters of a battery

This disclosure provides a hydrogen storing alloy and a production method thereof. The hydrogen storing alloy has a chemical composition of a general formula RMgNi, wherein R is one or more elements selected from rare earth elements comprising Y, x satisfies 0.05&#x2264;x&#x2264;0.3, and y satisfies 2.8&#x2264;y&#x2264;3.8. The ratio of the maximal peak intensity present in a range of 2&#x3b8;=31&#xb0;-33&#xb0; to the maximal peak intensity present in a range of 2&#x3b8;=41&#xb0;-44&#xb0; is 0.1 or less (including 0), as measured by X-ray diffraction in which a Cu&#x2014;K&#x3b1; ray is set as an X-ray source.

Hydrogen storing alloy and production method thereof

Growing community of inventors

Fujian, China

Zhen Lin