阅读说明：本技术 一种电池检测方法、装置及系统 (Battery detection method, device and system ) 是由 李晓宇 张祖光 田劲东 田勇 张小军 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种电池检测方法、装置及系统；其中,方法包括：获取待测电池的正面图像信息和左侧图像信息后,对获取的图像信息进行预处理得到对应的正面上轮廓曲线、正面下轮廓曲线、左侧面上轮廓曲线和左侧面下轮廓曲线,进而可获得待测电池的三维空间分布信息,根据三维空间分布信息计算出当前待测电池的体积并与待测电池的标准体积作对比后最终得到待测电池的形变量,完成电池的检测过程；解决了现有技术电池检测需要操作人员对待测电池进行充放电导致耗时长、效率低的技术问题,提供了一种可靠、高效的电池检测方法。(The invention discloses a battery detection method, a device and a system; the method comprises the following steps: after acquiring the front image information and the left image information of the battery to be detected, preprocessing the acquired image information to obtain a corresponding front upper contour curve, a front lower contour curve, a left side upper contour curve and a left side lower contour curve, further acquiring three-dimensional space distribution information of the battery to be detected, calculating the volume of the current battery to be detected according to the three-dimensional space distribution information, comparing the volume with the standard volume of the battery to be detected, finally obtaining the deformation amount of the battery to be detected, and completing the detection process of the battery; the technical problems of long time consumption and low efficiency caused by the fact that in the prior art, battery detection needs operators to charge and discharge the battery to be detected are solved, and the reliable and efficient battery detection method is provided.)

1. A battery testing method, comprising:

acquiring front image information and left image information of a battery to be tested, and respectively preprocessing the front image information and the left image information;

obtaining a front upper contour curve and a front lower contour curve corresponding to the front image information and a left side upper contour curve and a left side lower contour curve corresponding to the left image information according to the preprocessing result;

obtaining three-dimensional space distribution information of the battery to be tested according to the front upper contour curve, the front lower contour curve, the left side upper contour curve and the left side lower contour curve;

and obtaining the current volume of the battery to be tested according to the three-dimensional spatial distribution information, and obtaining the deformation quantity of the battery to be tested according to the current volume and the standard volume of the battery to be tested.

2. The battery test method of claim 1, further comprising:

and grading the battery to be tested according to the deformation quantity.

3. The battery detection method according to claim 1 or 2, wherein the respectively preprocessing the front side image information and the left side image information specifically comprises:

and respectively carrying out image filtering processing, binarization processing and morphological processing on the front image information and the left image information, and outputting the preprocessing result.

4. The battery detection method according to claim 3, wherein obtaining the front upper contour curve and the front lower contour curve corresponding to the front image information and the left side upper contour curve and the left side lower contour curve corresponding to the left image information according to the preprocessing result specifically includes:

calculating a connected domain of the preprocessing result to obtain a front upper contour point, a front lower contour point, a left side upper contour point and a left side lower contour point;

fitting the upper contour points and the lower contour points of the front surface by a quadratic polynomial to obtain an upper contour curve and a lower contour curve of the front surface;

and fitting the upper contour points of the left side surface and the lower contour points of the left side surface by using a quadratic polynomial to obtain the upper contour curve of the left side surface and the lower contour curve of the left side surface.

5. The battery detection method according to claim 1 or 2, wherein obtaining the three-dimensional spatial distribution information of the battery to be detected specifically comprises:

obtaining a front face fitting curve of the battery to be tested according to the front face upper contour curve and the front face lower contour curve;

obtaining a left side surface fitting curve of the battery to be tested according to the left side surface upper contour curve and the left side surface lower contour curve;

respectively carrying out alignment conversion on the front fitted curve and the left side fitted curve;

performing stretching conversion on the left side surface fitting curve by taking the front surface fitting curve as a standard;

establishing a space coordinate system, and establishing a three-dimensional space structure of the battery to be tested by taking the front fitted curve as a datum curve along an X axis and the left side fitted curve as a datum curve along a Y axis;

taking a plurality of marking points along a Y axis, and acquiring Y-axis component information which passes through the marking points, is perpendicular to the Y axis and is intersected with the three-dimensional space structure;

and obtaining the three-dimensional spatial distribution information according to the component information of the three-dimensional spatial distribution information in the Y axis.

6. A battery test apparatus, comprising:

the image acquisition preprocessing module is used for acquiring front image information and left image information of a battery to be detected and respectively preprocessing the front image information and the left image information;

the contour curve calculation module is used for obtaining a front upper contour curve and a front lower contour curve corresponding to the front image information and a left side upper contour curve and a left side lower contour curve corresponding to the left image information according to the preprocessing result;

the three-dimensional space distribution information calculation module is used for obtaining the three-dimensional space distribution information of the battery to be tested according to the front upper contour curve, the front lower contour curve, the left side upper contour curve and the left side lower contour curve;

and the deformation calculation module of the battery to be tested is used for obtaining the current volume of the battery to be tested according to the three-dimensional space distribution information and obtaining the deformation amount of the battery to be tested according to the current volume and the standard volume of the battery to be tested.

7. The battery test apparatus of claim 6, further comprising:

and the battery grade division module is used for grading the battery to be tested according to the deformation quantity.

8. A battery test system, comprising: the system comprises a first image acquisition device, a second image acquisition device, a transmission device and a processor;

the transmission device is used for transmitting the battery to be tested;

the first image acquisition device is used for acquiring front image information of the battery to be detected and transmitting the front image information to the processor;

the second image acquisition device is used for acquiring left image information of the battery to be detected and transmitting the left image information to the processor;

the processor performs the battery detection method according to any one of claims 1 to 5 based on the received front side image information and the left side image information.

9. The battery detection system of claim 8, wherein the transmission comprises a transverse conveyor and a longitudinal conveyor; the first image acquisition device is arranged on the side edge of the transverse conveyor belt to acquire the front image information; and the second image acquisition device is arranged on the side edge of the longitudinal conveyor belt to acquire the left image information.

10. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the battery detection method according to any one of claims 1 to 5.

Technical Field

The invention relates to the technical field of battery detection, in particular to a battery detection method, device and system.

Background

With the rise of the electric automobile industry and the wide application of portable power consumption equipment, the problem of recycling rechargeable batteries becomes one of the key technical problems faced by electric automobile enterprises and battery research and development enterprises, and the recycling of batteries by adopting a reliable and efficient technical means is beneficial to reducing the production cost of enterprises and promoting the development of the battery industry and the electric automobile industry.

The detection of the rechargeable battery requires the charging and discharging test of the battery to be detected by means of the battery charging and discharging equipment, and the operation of continuously testing the battery to be detected by operators, so that the detection mode of the battery is long in time consumption, the personnel are required to participate in the whole process, and the efficient and automatic battery detection mode cannot be realized.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, it is an object of the present invention to provide a reliable and efficient battery detection method.

The technical scheme adopted by the invention is as follows:

in a first aspect, the present invention provides a battery detection method, which includes:

acquiring front image information and left image information of a battery to be tested, and respectively preprocessing the front image information and the left image information;

obtaining a front upper contour curve and a front lower contour curve corresponding to the front image information and a left side upper contour curve and a left side lower contour curve corresponding to the left image information according to the preprocessing result;

obtaining three-dimensional space distribution information of the battery to be tested according to the front upper contour curve, the front lower contour curve, the left side upper contour curve and the left side lower contour curve;

and obtaining the current volume of the battery to be tested according to the three-dimensional spatial distribution information, and obtaining the deformation quantity of the battery to be tested according to the current volume and the standard volume of the battery to be tested.

Further, the battery detection method further includes:

and grading the battery to be tested according to the deformation quantity.

Further, the respectively preprocessing the front image information and the left image information specifically includes:

and respectively carrying out image filtering processing, binarization processing and morphological processing on the front image information and the left image information, and outputting the preprocessing result.

Further, obtaining a front upper contour curve and a front lower contour curve corresponding to the front image information and a left side upper contour curve and a left side lower contour curve corresponding to the left image information according to the preprocessing result specifically includes:

calculating a connected domain of the preprocessing result to obtain a front upper contour point, a front lower contour point, a left side upper contour point and a left side lower contour point;

fitting the upper contour points and the lower contour points of the front surface by a quadratic polynomial to obtain an upper contour curve and a lower contour curve of the front surface;

and fitting the upper contour points of the left side surface and the lower contour points of the left side surface by using a quadratic polynomial to obtain the upper contour curve of the left side surface and the lower contour curve of the left side surface.

Further, the obtaining of the three-dimensional spatial distribution information of the battery to be tested specifically includes:

obtaining a front face fitting curve of the battery to be tested according to the front face upper contour curve and the front face lower contour curve;

obtaining a left side surface fitting curve of the battery to be tested according to the left side surface upper contour curve and the left side surface lower contour curve;

respectively carrying out alignment conversion on the front fitted curve and the left side fitted curve;

performing stretching conversion on the left side surface fitting curve by taking the front surface fitting curve as a standard;

establishing a space coordinate system, and establishing a three-dimensional space structure of the battery to be tested by taking the front fitted curve as a datum curve along an X axis and the left side fitted curve as a datum curve along a Y axis;

taking a plurality of mark points along a Y axis, and acquiring component information of the three-dimensional space distribution information which passes through the mark points, is perpendicular to the Y axis and is intersected with the three-dimensional space structure in the Y axis;

and obtaining the three-dimensional spatial distribution information according to the component information of the three-dimensional spatial distribution information in the Y axis.

In a second aspect, the present invention provides a battery testing apparatus, comprising:

the image acquisition preprocessing module is used for acquiring front image information and left image information of a battery to be detected and respectively preprocessing the front image information and the left image information;

the contour curve calculation module is used for obtaining a front upper contour curve and a front lower contour curve corresponding to the front image information and a left side upper contour curve and a left side lower contour curve corresponding to the left image information according to the preprocessing result;

the three-dimensional space distribution information calculation module is used for obtaining the three-dimensional space distribution information of the battery to be tested according to the front upper contour curve, the front lower contour curve, the left side upper contour curve and the left side lower contour curve;

and the deformation calculation module of the battery to be tested is used for obtaining the current volume of the battery to be tested according to the three-dimensional space distribution information and obtaining the deformation amount of the battery to be tested according to the current volume and the standard volume of the battery to be tested.

Further, the battery detection apparatus further includes:

and the battery grade division module is used for grading the battery to be tested according to the deformation quantity.

In a third aspect, the present invention provides a battery detection system, comprising: the system comprises a first image acquisition device, a second image acquisition device, a transmission device and a processor;

the transmission device is used for transmitting the battery to be tested;

the first image acquisition device is used for acquiring front image information of the battery to be detected and transmitting the front image information to the processor;

the second image acquisition device is used for acquiring left image information of the battery to be detected and transmitting the left image information to the processor;

the processor performs the battery detection method according to any one of claims 1 to 5 based on the received front side image information and the left side image information.

Further, the transmission device comprises a transverse conveyor belt and a longitudinal conveyor belt; the first image acquisition device is arranged on the side edge of the transverse conveyor belt to acquire the front image information; the side edge of the longitudinal conveyor belt is provided with the first image acquisition device to acquire the left image information.

In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the battery detection method.

The invention has the beneficial effects that:

the invention relates to a battery detection method, which comprises the steps of obtaining front image information and left image information of a battery to be detected, preprocessing the obtained image information to obtain a corresponding front upper contour curve, a front lower contour curve, a left side upper contour curve and a left side lower contour curve, further obtaining three-dimensional space distribution information of the battery to be detected, calculating the volume of the current battery to be detected according to the three-dimensional space distribution information, comparing the volume with a standard volume of the battery to be detected, finally obtaining the deformation amount of the battery to be detected, and completing the detection process of the battery; the technical problems of long time consumption and low efficiency caused by the fact that in the prior art, battery detection needs operators to charge and discharge the battery to be detected are solved, and the reliable and efficient battery detection method is provided.

Drawings

FIG. 1 is a flow chart of one embodiment of a battery testing method of the present invention;

FIG. 2 is a schematic diagram of an embodiment of a method for detecting a battery according to the present invention, in which connected domain calculation is performed on front image information of a battery to be detected to obtain front upper contour points and front lower contour points;

FIG. 3 is a schematic diagram of an embodiment of a method for testing a battery according to the present invention, in which quadratic polynomial fitting is performed on front image information of the battery to be tested to obtain a front upper contour curve and a front lower contour curve;

FIG. 4 is a schematic diagram of three-dimensional spatial distribution information of a battery to be tested in a battery testing method according to the present invention;

FIG. 5 is a block diagram of a battery testing apparatus according to an embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.