Lithium-ion battery internal voltage test device

A lithium-ion battery and testing device technology, which can be used in measuring devices, measuring fluid pressure, and measuring fluid pressure through mechanical components, etc., can solve problems such as low accuracy, and achieve the advantages of small additional space, convenient and fast testing, and increased accuracy. Effect

Active Publication Date: 2016-04-27
上海电气国轩新能源科技(南通)有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system uses the method of measuring the external deformation of the battery to measure the internal pressure, and its accuracy is relatively low

Method used

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  • Lithium-ion battery internal voltage test device
  • Lithium-ion battery internal voltage test device

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing:

[0015] like figure 1 , 2 As shown, the lithium-ion battery internal pressure test device of this embodiment includes a test device body with a cylindrical inner cavity. The test device body is composed of an upper casing 1 and a lower casing 2 that are detachably connected. The inner side of the housing 2 is respectively provided with an upper pole groove 11 and a lower pole groove 21 matching the battery pole 9 along its center line, and the shape of the inner cavity formed by the upper housing 1 and the lower housing 2 is consistent with that of the battery. The outline shape of the upper casing 1 is provided with a positioning pinhole 31 matching the battery liquid injection hole 3, and a pressure gauge 32 installed in the positioning pinhole 31, the upper side of the upper casing 1, the lower casing The lower side of the 2 is respectively provided with an upper protru...

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Abstract

The invention relates to a lithium-ion battery internal voltage test device, which comprises a test device body, wherein an inner cavity of the test device body is cylindrical, the test device body is composed of an upper shell body and a lower shell body which are connected in a detachable manner, an upper pole column groove is formed in the inner side of the upper shell body along its center line, a lower pole column groove is formed in the inner side of the lower shell body along its center line, and a shape of the inner cavity formed by the upper shell body and the lower shell body is matched with a contour shape of a battery; a positioning needle hole matched with a liquid injection hole of the battery is formed in the upper shell body, and the upper shell body is provided with a pressure gauge installed in the positioning needle hole; the upper side surface of the upper shell body is provided with an upper projection corresponding to the upper pole column groove, and the lower side surface of the lower shell body is provided with a lower projection corresponding to the lower pole column groove; and an upper test pole column (used for connecting a pole column on one end of the battery) is formed by the upper projection and a shell body portion which is vertically connected with the upper projection, and a lower test pole column (used for connecting a pole column on the other end of the battery) is formed by the lower projection and a shell body portion which is vertically connected with the lower projection. The lithium-ion battery internal voltage test device is simple in structure, can be recycled to use, does not damage the battery, is convenient and fast in test, and is safe and reliable.

Description

technical field [0001] The invention relates to a battery parameter testing device, in particular to a lithium ion battery internal pressure testing device. Background technique [0002] During the formation process of lithium-ion batteries, a series of chemical reactions such as the formation of SEI will produce gas. The amount of gas produced is often the main basis for the water content and formation effect of the battery, especially the closed formation, which is directly related to the internal pressure of the battery. Related, it is related to the safety performance of the battery. But there is still no convenient and quick device and method to complete the test of the internal pressure of the battery. [0003] For example, the Chinese patent application number 96249577.8 discloses a device for testing the internal pressure of an alkaline secondary battery, including a lower tank, a replaceable movable bush, an upper cover, a sealing gasket, and an insulating layer at...

Claims

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Application Information

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IPC IPC(8): G01L7/00
CPCG01L7/00
Inventor 余水李瑜谢祥平黄泽光
Owner 上海电气国轩新能源科技(南通)有限公司
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