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Lithium battery grouping method

A technology for lithium battery packs and lithium batteries, which is applied to secondary batteries, circuits, and measurement electronics, can solve problems such as poor matching effects, and achieve the effects of improving matching accuracy, increasing service life, and improving consistency

Pending Publication Date: 2022-03-01
YINLONG ENERGY CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for grouping lithium batteries to solve the problem of poor grouping effect of lithium batteries in the prior art

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  • Lithium battery grouping method

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Embodiment Construction

[0017] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0018] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0019] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish simila...

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Abstract

The invention provides a lithium battery matching method, which comprises the following steps of: respectively adjusting a plurality of lithium batteries from an initial state to a first charge state at a preset rate, and dividing the plurality of lithium batteries meeting a first test standard into a plurality of first lithium battery packs; adjusting the lithium batteries in the plurality of first lithium battery packs from the initial state to a second charge state at a preset rate, rejecting the lithium batteries which do not accord with a second test standard, and grouping the first lithium battery packs with the rejected lithium batteries which do not accord with the second test standard to form a plurality of second lithium battery packs; and adjusting the lithium batteries in the second lithium battery pack from the initial state to a third charge state at a preset rate, rejecting the lithium batteries which do not conform to a third test standard, and grouping the rejected second lithium battery packs which do not conform to the third test standard to obtain a final lithium battery group. By adopting the technical scheme of the invention, the consistency of the grouped lithium batteries under different charging and discharging conditions is improved, and the service life of the lithium battery system is prolonged.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery assembly method. Background technique [0002] In the general trend of energy transformation and green development, the environmentally friendly electric vehicle market is growing rapidly. While the electric vehicle market is growing rapidly, the requirements for its cruising range and battery system service life are also getting higher and higher. The battery system is composed of multiple lithium batteries connected in series and in parallel. The consistency of the lithium batteries in the group has become one of the short board factors affecting the large-scale application of electric vehicles. [0003] The existing lithium battery matching method is mainly based on the capacity, voltage, self-discharge, internal resistance and other parameters of the lithium battery. It does not consider that when the lithium battery is used at a high rate, its vol...

Claims

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Application Information

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IPC IPC(8): H01M10/48G01R31/396
CPCH01M10/482G01R31/396Y02E60/10
Inventor 蒋世用贺玉玲王影李海军张紫亮孙银碧姚骏丁坤鹏栾琳卢海德
Owner YINLONG ENERGY CO LTD
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