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Lithium ion battery

A lithium-ion battery and terminal technology, which is applied in secondary batteries, circuits, electrical components, etc., can solve the problem that lithium-ion batteries are not easy to package.

Pending Publication Date: 2019-05-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a lithium-ion battery for the problem that the lithium-ion battery is not easy to package in the traditional solution.

Method used

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Embodiment Construction

[0056] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0057] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to"...

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Abstract

The invention provides a lithium ion battery. The lithium ion battery includes a first positive and negative electrode pair. The first positive and negative electrode pair includes a positive plate, anegative plate, a first diaphragm, a second diaphragm, and a flexible circuit board. A detection circuit is integrally disposed on the flexible circuit board and is used for detecting temperature andelectric potential in the first positive and negative electrode pair. The first diaphragm and the second diaphragm are disposed between the positive plate and the negative plate. The flexible circuitboard is disposed between the first diaphragm and the second diaphragm. The flexible circuit board is disposed in a lamination or reeling process of the lithium ion battery, since the detection circuit is integrally disposed on the flexible circuit board, lead connection is not required during a measurement process, thereby solving the problem that the lithium ion battery is not easy to package caused by too many leads. In addition, the flexible circuit board is easily fixed inside the first positive and negative electrode pair, thus effectively solving the problem that a measurement point isnot easy to be fixed due to a small size.

Description

technical field [0001] The present application relates to the technical field of power energy, in particular to a lithium-ion battery. Background technique [0002] With the improvement of energy density, the volume of power batteries is gradually increasing, and the inhomogeneity of internal reactions has an increasing impact on battery performance. At the same time, research on thermoelectric coupling of lithium-ion batteries has become a hot spot for battery performance and safety. Among them, the measurement of internal parameters during battery use is the key to establishing a thermoelectric coupling model. [0003] Lithium-ion batteries are airtight, and it is very difficult to obtain information on the distribution of physical quantities inside the battery. The traditional solution is to arrange micro-sensors inside the battery. The existing sensors need to be connected to leads for power supply and data transmission, which brings difficulties to the packaging of li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48H01M10/0525
CPCY02E60/10
Inventor 李哲王子珩张剑波
Owner TSINGHUA UNIV
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