Battery unit and manufacturing method thereof and battery module

A technology of battery cells and manufacturing methods, applied in secondary battery manufacturing, battery pack parts, electrical components, etc., can solve the problems of reducing battery energy density, reducing winding space, large space, etc. Increase the winding space and reduce the effect of external force

Pending Publication Date: 2020-11-24
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this way of fixing the current collecting member and the tabs takes up a lot of space on both sides of the electrode assembly.

Method used

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  • Battery unit and manufacturing method thereof and battery module
  • Battery unit and manufacturing method thereof and battery module
  • Battery unit and manufacturing method thereof and battery module

Examples

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[0063] The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. The aspects so defined can be combined with any other aspect or aspects, unless it is clearly indicated that they cannot be combined. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

[0064] The terms "first" and "second" appearing in the present invention are only for convenience of description, to distinguish different components with the same name, and do not indicate a sequence or a primary-secondary relationship.

[0065] In addition, when an element is referred to as being "on" another element, the element may be directly on the other element, or it may be indirectly on the other element with one or More intermediate components. In addition, when an element is referred to as being "connected to" another el...

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Abstract

The invention relates to a battery unit and a manufacturing method thereof and a battery module. The battery unit comprises: an electrode assembly (1), wherein the electrode assembly comprises a mainbody part (11), and a negative tab (12) and a positive tab (13) respectively extending from two ends of the main body part (11) in the length direction; a negative electrode terminal (4) and a positive electrode terminal (5); and a first current collecting member (2) for electrically connecting the negative electrode tab (12) and the negative electrode terminal (4), and a second current collectingmember (3) for electrically connecting the positive electrode tab (13) and the positive electrode terminal (5), wherein the first current collecting member (2) comprises a first guide plate (21), thefirst guide plate (21) is of a flat plate structure, and the negative tab (12) is bent to one side, far away from the main body part (11), of the first guide plate (21) and is connected with the first guide plate (21). According to the structure, the energy density of the battery unit can be improved, and the deformation of the first guide plate when the tab is bent is reduced.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery unit, a manufacturing method thereof, and a battery module. Background technique [0002] In recent years, rechargeable batteries have been widely used to power high-power devices, such as electric vehicles and the like. Rechargeable batteries achieve greater capacity or power by connecting multiple battery cells in series or in parallel. [0003] The current battery unit is provided with an electrode assembly in the casing. The electrode assembly is formed by stacking and winding the positive pole piece, the separator and the negative pole piece. Both the positive pole piece and the negative pole piece include a coated part and an uncoated part. The covering part forms tabs, and the tabs on both sides of the electrode assembly are respectively connected to the positive and negative terminals on the top of the casing through the current collecting member. [0004] I...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M2/26H01M50/536H01M50/538
CPCH01M10/04H01M50/536H01M50/538Y02E60/10Y02P70/50H01M4/70H01M10/045
Inventor 许虎来佑磊陈元宝任苗苗郑东来金海族
Owner CONTEMPORARY AMPEREX TECH CO
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