Lithium ion battery, battery module, battery pack and automobile

A lithium-ion battery, battery technology, used in electric vehicles, battery pack components, electric vehicle charging technology, etc.

Active Publication Date: 2019-11-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in CN201110021300.4, because the partition plate divides the inside of the shell into multiple separate cavities, how to inject electrolyte into each separate cavity whil...

Method used

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  • Lithium ion battery, battery module, battery pack and automobile
  • Lithium ion battery, battery module, battery pack and automobile
  • Lithium ion battery, battery module, battery pack and automobile

Examples

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Embodiment Construction

[0072] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0073] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention provides a lithium ion battery, which comprises a shell, partition plates located in the shell and a blocking mechanism, wherein the internal part of the shell is divided into a plurality of accommodating cavities by the partition plates, the accommodating cavities are internally provided with pole core groups, and each pole core group comprises at least one pole core; the pole coregroups are connected in series; at least one partition plate is provided with an electrolyte injection hole, and the electrolyte injection holes are used for communicating two adjacent accommodating cavities at two sides of the partition plate; the blocking mechanism is located in the shell, the blocking mechanism can enable the electrolyte injection hole to be in a preset state, and the preset state comprises an opening state and a closing state. According to the battery provided by the invention, the isolation and safety of the pole core groups can be ensured while electrolyte injection is facilitated. Meanwhile, the invention also provides a battery module, a battery pack and an automobile based on the battery provided by the invention.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a lithium ion battery, a battery module, a battery pack and an automobile. Background technique [0002] With the continuous popularization of new energy vehicles, the requirements for the use of power batteries in new energy vehicles are becoming higher and higher. In particular, users' requirements for the continuation mileage of new energy vehicles continue to increase, and the overall capacity of battery packs used in new energy vehicles needs to be continuously improved; at the same time, during the use of power battery packs, the internal resistance caused by Internal friction is required to be minimized. [0003] The width of common new energy vehicles is generally more than 1 meter, and the length is several meters; as the power battery pack of new energy vehicles, it is generally placed at the bottom of new energy vehicles; the power battery packs currently on the market are ge...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M2/36H01M10/0525H01M10/0585H01M10/0587H01M50/112H01M50/147H01M50/207H01M50/593H01M50/636
CPCH01M10/0525H01M2220/20H01M10/058H01M50/112H01M50/593H01M50/147H01M50/636H01M50/207H01M10/0587H01M10/02H01M50/15H01M50/529Y02T10/7072Y02T90/14H01M50/103H01M50/3425H01M50/474H01M50/477H01M50/533H01M50/534H01M50/538H01M50/655Y02E60/10H01M10/0585H01M10/4214
Inventor 王传福何龙孙华军朱建华鲁志佩朱燕胡世超
Owner BYD CO LTD
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