Byd Company Limited

Wenfeng Jiang

Jin Liu

Jianhua Zhu

Yan Zhu

Xinyue Wang

Kefeng He

Long He

Weixin Zheng

Zhipei Lu

Huajun Sun

Jianglong Tang

Xi Quan Shen

Hui Zhang

Junqing Dong

Yu Xia

Guanglin Wu

Chengliang Li

Xiankai Zhou

Xiaohui Jia

Guogang Liu

Honggu Pan

A cell for use in a power battery pack. The cell incudes a battery body having a length L, a width H, a thickness D, and a volume V. The length L is greater than the width H. The width H is greater than the thickness D. The battery body meets: 400 mm≤L≤2500 mm and 0.0005 mm≤L/V≤0.002 mm.

Power battery pack and electric vehicle

Provided are a power battery pack and an electric vehicle. The power battery pack includes: a pack body; and a plurality of cells, directly arranged in the pack body. The cell extends from a first side of the pack body to a second side of the pack body, and the first side and the second side are disposed opposite to each other. The first side of the pack body is provided with a first side wall, the second side of the pack body is provided with a second side wall, an end of the cell is supported by the first side wall, and the other end of the cell is supported by the second side wall.

A battery module, a power battery pack and a vehicle are provided. The battery module comprises n cells. At least two surfaces of the cell are respectively provided with a first positive terminal and a first negative terminal, and a second positive terminal and a second negative terminal. The n cells are arranged side by side in series. The cell () has a length L and a width H, where L meets 600 mm<L≤1300 mm, and L and H meet 10<L/H≤20.

Battery module, power battery pack and vehicle

A cell, a power battery pack, and an electric vehicle are provided. The cell includes a cell body, and the cell body has a length L, a width H and a thickness D. The length L of the cell body is greater than the width H, the width H of the cell body is greater than the thickness D, the length L of the cell body is greater than 600 mm, and the length L and the width H of the cell body satisfy L/H=4-21.

Cell, power battery pack, and electric vehicle

Provided are a power battery pack and an electric vehicle. The power battery pack includes: a pack body, where an accommodating space is defined in the pack body, the pack body is provided therein with at least one widthwise cross beam or lengthwise cross beam, the widthwise cross beam extends along a width direction of the power battery pack, the lengthwise cross beam extends along a length direction of the power battery pack, and the accommodating space is divided into a plurality of accommodating chambers by the at least one widthwise cross beam or lengthwise cross beam; and a plurality of cells, disposed in the pack body and directly arranged in the accommodating chambers, where at least one cell is arranged in each accommodating chamber to form a cell array.

A power battery pack includes: a pack body; a plurality of cells, disposed in the pack body; the cell having a length L, a width H, and a thickness D, where at least one cell meets: L>H≥D, a length direction of the cell is arranged along a width direction of a vehicle body of the electric vehicle, and in the width direction of the electric vehicle, the length Lof the cell and a size W of the vehicle body of the electric vehicle in the width direction meet: 46%≤L/W≤76%; or at least one cell meets: L>H≥D, a length direction of the cell is arranged along a length direction of a vehicle body of the electric vehicle, and in the length direction of the electric vehicle, the length Lof the cell and a size X of the vehicle body of the electric vehicle in the length direction meet: 40%≤L/W≤76%.

A battery pack, a vehicle, and an energy storage device. The battery pack includes a housing with a first direction and a second direction perpendicular to the first direction. The battery pack housing includes at least one rectangular cell accommodating unit is formed therein. The battery pack also includes a plurality of rectangular cells, and has a dimension greater than or equal to 600 mm along the first direction. The plurality of rectangular cells are arranged in the rectangular cell accommodating unit along the second direction. The rectangular cell has a thickness of D, length of L, and height of H. A length direction of at least one rectangular cell extends from one side of the rectangular cell accommodating unit to its other side along the first direction, and meets: L&#x3e;H, L&#x3e;D, 600 mm&#x2264;L&#x2264;2500 mm, 23&#x2264;L/D&#x2264;208.

Battery pack, vehicle and energy storage device

Embodiments of the present disclosure provide a battery heating system, a battery assembly and an electric vehicle. The battery heating system includes: a battery group having a positive terminal and a negative terminal; a switch having a first end connected with the positive terminal; a large-current discharge module, and a controller connected to the switch and configured to control the switch according to a temperature of the battery group. A first end of the large-current discharge module is connected to a second end of the switch, and a second end of the large-current discharge module is connected to the negative terminal. When the switch is turned on, the battery group discharges via the large-current discharge module and the battery group is heated due to an internal resistance thereof.

Battery heating system, battery assembly and electric vehicle

An electrochemical storage cell having a coiled core is disclosed. The coiled core includes a cathode sheet, an anode sheet, and a separator sheet. An anode connector is connected with the anode sheet at a first end of the coiled core and a cathode connector is connected with the cathode sheet at a second, opposite end of the coiled core. The coiled core has a length Land a width Wand each connector has a width W. The length of the coiled core L, width of the coiled core W, and width of each connector Whave the relationship 0&#x3c;(W&#x2212;W)/L&#x3c;0.37.

Optimized dimensional relationships for an electrochemical cell having a coiled core

The present invention provides materials for negative electrodes of lithium rechargeable batteries. These materials include lithium alloy composites. Each lithium alloy composite has a core-shell structure with one or more lithium alloy granules as its core and a carbon material as its shell. The average granule diameter of the lithium alloy granule is between 5 &#x3bc;m and 40 &#x3bc;m. The average thickness of the shell layer is between 50 &#x212b; and 1000 &#x212b;. The average diameter of the lithium alloy composite is between 10 &#x3bc;m to 50 &#x3bc;m. The methods of fabrication for the material includes the following steps: stirring lithium alloy granules in an organic solution with a coating substance, drying the solid product in the organic solution with a coating substance, calcining the dried product to obtain the negative electrode material with lithium alloy composites.

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Shenzhen, China

Wenfeng Jiang