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Method and system for detecting welding quality of batteries

A quality detection method and detection system technology, applied in the field of battery welding quality detection methods and systems, can solve the problems of low reliability, inability to detect product damage, low efficiency, etc., and achieve the effect of accurate and reliable detection, simple and effective detection

Active Publication Date: 2017-10-20
WATTPACK TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are the following disadvantages: measuring the resistance of welded joints for indirect judgment, low reliability and low efficiency
Measuring the peel strength of welded joints is a destructive test, which can only be carried out during the welding debugging process, but the product cannot be destructively tested in actual production

Method used

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  • Method and system for detecting welding quality of batteries
  • Method and system for detecting welding quality of batteries
  • Method and system for detecting welding quality of batteries

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] The method and system for detecting the quality of battery welding according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] figure 1 It is a flowchart of a battery welding quality inspection method according to an embodiment of the present invention. Such as figure 1 shown, combined with figure 2 , the battery welding quality detection method according to one embodiment of the present invention, comprises the following steps:

[0031] S101: Weld the ba...

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Abstract

The invention discloses a method and system for detecting the welding quality of batteries. The method comprises the following steps: welding a battery module and detecting the surface temperature of a welded battery lug during welding; calculating the minimum allowable temperature of the surface temperature of the welded battery lug according to a fitting function which is obtained through fitting between the measured value of the surface temperature of the welded battery lug and the measured value of the peeling degree of the welded battery lug, and comparing the surface temperature of the welded battery lug with the minimum allowable temperature; and if the surface temperature of the welded battery lug is greater than or equal to the minimum allowable temperature, determining welding to be qualified, or otherwise, determining welding to be unqualified. The method for detecting the welding quality of batteries can simply and effectively detect whether the welding quality of batteries is qualified and has the advantage of accurate and reliable detection.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a quality detection method and system for battery welding. Background technique [0002] Lithium-ion power batteries are currently the main energy storage configuration for pure electric vehicles. In order to meet the voltage and power output requirements of different types of vehicles, lithium-ion power batteries are usually combined into power battery packs in various series and parallel ways. Therefore, in the process of manufacturing the power pack, it is necessary to connect the tabs of multiple lithium-ion power batteries. [0003] In the related art, the tabs of a plurality of lithium-ion power batteries may be connected by means of riveting, bolting, welding or the like. If the tabs of lithium-ion power batteries are connected by welding, there are mainly ultrasonic welding and laser welding. In actual production, multiple lithium-ion power battery tabs are stacked ...

Claims

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Application Information

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IPC IPC(8): G01N25/72
CPCG01N25/72
Inventor 王克坚曹瑜琦
Owner WATTPACK TECH CO LTD
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