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Secondary battery and battery module

A secondary battery and electrode assembly technology, which is applied to battery components, batteries, circuits, etc., can solve the problems of increased manufacturing costs of poles and the inability of direct stamping of poles, so as to improve energy density and avoid electrolyte leakage , to ensure the sealing effect

Active Publication Date: 2019-03-05
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, since the pole needs to be provided with a base part and a long extension part, the pole cannot be directly punched and formed, but needs to be formed by a single machining process, which increases the manufacturing cost of the pole

Method used

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Embodiment Construction

[0044]Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention; and, for clarity, the dimensions of some structures may have been exaggerated. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the features, str...

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Abstract

The invention provides a secondary battery and a battery module. The secondary battery comprises a shell, an electrode assembly, a top cover assembly, a wiring board and a sealing part, wherein the shell has an opening; the electrode assembly comprises a first pole piece, a second pole piece and a partition plate arranged between the first pole piece and the second pole piece; the top cover assembly comprises a top cover plate and a first electrode terminal, wherein the top cover plate covers the opening and is provided with an electrode lead-out hole; the first electrode terminal comprises aterminal plate, wherein the terminal plate is located on one side of the top cover plate and covers the electrode lead-out hole; the wiring board comprises a main body part and an extension part connected with the main body part, and the main body part is located on one side, away from the terminal plate, of the top cover plate and is connected with the first pole piece; the extension part extendsinto the electrode lead-out hole and is connected with the first electrode terminal; and the sealing part is arranged between the top cover plate and the wiring board and surrounds the extension partso as to seal the electrode lead-out hole. The space utilization rate inside the secondary battery shell can be improved, so that the energy density of the secondary battery is improved, so as to prevent electrolyte leakage in the secondary battery shell.

Description

technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a secondary battery and a battery module. Background technique [0002] New energy vehicles are being widely promoted at home and around the world, but there are still many things to improve in order to completely replace fuel vehicles. For example, the mileage of the car is small, the cost of the battery pack is high, and the reliability of the battery pack needs to be further resolved. Based on the above problems, higher requirements are put forward for the power battery, the core component of electric vehicles, such as higher energy density and lower cost for the power battery. [0003] At present, the power battery casing includes a casing and a top cover assembly, wherein the casing provides a closed space to accommodate the battery cell and electrolyte, and the electric energy of the battery cell is drawn from the closed space to the outside of the closed sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/06H01M2/08H01M2/26H01M2/30H01M50/172H01M50/186H01M50/536H01M50/543
CPCH01M2220/20Y02E60/10
Inventor 李全坤
Owner CONTEMPORARY AMPEREX TECH CO
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