Optical detection device, detection method and device, electronic device, and storage medium

1 . An optical detection device, comprising:

a detection workspace, configured to hold a target workpiece under detection;

a first image acquisition device, configured to acquire an image of the target workpiece along a first direction;

a plurality of second image acquisition devices, configured to acquire an image of the target workpiece along directions different from the first direction;

a detection light source, configured to provide detection light for the first image acquisition device and the plurality of second image acquisition devices, and comprising a first sub-light source and a second sub-light source, the second sub-light source comprising a plurality of bar-shaped light sources and configured to provide the detection light incident on a lateral surface of the target workpiece; and

a conveyor, configured to convey the target workpiece into or out of the detection workspace;

wherein:

an optical axis of the detection light provided by the first sub-light source of the detection light source is coaxial with an optical axis of the first image acquisition device;

in a plane perpendicular to the first direction, projections of the plurality of second image acquisition devices and projections of the plurality of bar-shaped light sources are alternately arranged along a circle around a center of the detection workspace at a uniform interval; and

the second sub-light source is disposed below the first sub-light source;

the first sub-light source comprises a light output port, and the second sub-light source is located on a side, of the first sub-light source, having the light output port; and

the second sub-light source contains a transmissive hole, the transmissive hole is made corresponding to the light output port of the first sub-light source to allow passage of the detection light emitted by the first sub-light source, and an opening size of the light output port of the first sub-light source is larger than an opening size of the transmissive hole of the second sub-light source.

2 . The optical detection device according to claim 1 , wherein the first sub-light source is configured to provide the detection light coaxial with the optical axis of the first image acquisition device.

3 . The optical detection device according to claim 1 , wherein the second sub-light source comprises:

an end cap, fixedly connected to the side, of the first sub-light source, having the light output port, and the transmissive hole is made on the end cap; and

a light-emitting element, fixed on a lateral surface, of the end cap, away from the first sub-light source, wherein the light-emitting element is located on a periphery of the transmissive hole.

4 . The optical detection device according to claim 2 , wherein:

the detection workspace comprises a first detection workspace and a second detection workspace spaced apart from each other;

the first image acquisition device and the first sub-light source are located above the first detection workspace to acquire the image of the target workpiece in the first detection workspace; and

the plurality of second image acquisition devices and the second sub-light source are disposed around the second detection workspace to acquire the image of the target workpiece in the second detection workspace.

5 . The optical detection device according to claim 1 , wherein the optical axis of the first image acquisition device is perpendicular to a plane in which the detection workspace is located.

6 . The optical detection device according to claim 1 , wherein a mounting angle between an optical axis of one of the plurality of second image acquisition devices and a plane in which the detection workspace is located is adjustable, and the mounting angle is greater than or equal to 10° and less than or equal to 45°.

7 . The optical detection device according to claim 1 , further comprising:

A 3D camera, configured to acquire a 3D image of the target workpiece.

8 . A cell electrode post detection method, comprising:

acquiring an image of a cell electrode post using the optical detection device according to claim 1 ;

recognizing the image and determining a defect parameter in the image; and

determining a detection result of the cell electrode post based on the defect parameter.

9 . The cell electrode post detection method according to claim 8 , wherein recognizing the image and determining the defect parameter in the image comprise:

locating the cell electrode post in the image;

sorting out pixels of a defect region of the cell electrode post from the image to obtain a defect image; and

determining the defect parameter based on the defect image, wherein the defect parameter comprises at least one of a defect type, a defect size, or a defect gray value.

10 . The cell electrode post detection method according to claim 8 , wherein determining the detection result of the cell electrode post based on the defect parameter comprises:

determining a detection result corresponding to the defect parameter and related to the cell electrode post based on a preset correspondence between the defect parameter and the detection result.

11 . The cell electrode post detection method according to claim 8 , further comprising:

excluding, in response to the detection result being indicative of a defect, a battery cell that comprises the cell electrode post.

12 . An electronic device, comprising:

at least one processor; and

a memory connected in communication with the at least one processor, wherein the memory stores an instruction executable by the at least one processor, and the instruction is executed by the at least one processor so that the at least one processor is enabled to perform the detection method according to claim 8 .

13 . A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and, when executed by a processor, the computer program causes the processor to implement the detection method according to claim 8 .

14 . A cell electrode post detection device, comprising:

the optical detection device according to claim 1 , configured to acquire an image of a cell electrode post;

an image recognition module, configured to recognize the image of the cell electrode post acquired by the optical detection device; and

a determining module, configured to determine a detection result of the cell electrode post based on a recognition result of the image recognition module.

15 . The optical detection device according to claim 1 , wherein:

the first direction is perpendicular to a plane in which the detection workspace is located;

an angle between the optical axis of the first image acquisition device and an optical axis of the detection light provided by the second sub-light source is smaller than an angle between the optical axis of the first image acquisition device and an optical axis of one of the plurality of second image acquisition devices; and

the first image acquisition device, the first sub-light source, the second sub-light source and the second image acquisition device are arranged in sequence from top to bottom in the first direction.

16 . An optical detection device, comprising:

a detection workspace, configured to hold a target workpiece under detection;

a first image acquisition device, configured to acquire an image of the target workpiece along a first direction;

a plurality of second image acquisition devices disposed at intervals around the detection workspace, configured to acquire an image of the target workpiece along directions different from the first direction;

a detection light source, configured to provide detection light for the first image acquisition device and the second image acquisition device, and comprising a first sub-light source and a second sub-light source; and

a conveyor, configured to convey the target workpiece into or out of the detection workspace;

wherein:

an optical axis of at least a part of the detection light provided by the first sub-light source of the detection light source is coaxial with an optical axis of the first image acquisition device;

a first mounting angle of one of the plurality of second image acquisition devices is formed between an optical axis of the one of the plurality of second image acquisition devices and a plane perpendicular to the first direction;

a second mounting angle of another one of the plurality of second image acquisition devices is formed between an optical axis of the another one of the plurality of second image acquisition devices and the plane perpendicular to the first direction;

the first mounting angle is different from the second mounting angle, and each of the first mounting angle and the second mounting angle is greater than or equal to 10° and less than or equal to 45°; and

the second sub-light source is disposed below the first sub-light source;

the first sub-light source comprises a light output port, and the second sub-light source is located on a side, of the first sub-light source, having the light output port; and

the second sub-light source contains a transmissive hole, the transmissive hole is made corresponding to the light output port of the first sub-light source to allow passage of the detection light emitted by the first sub-light source, and an opening size of the light output port of the first sub-light source is larger than an opening size of the transmissive hole of the second sub-light source.

17 . An optical detection device, comprising:

a detection workspace, configured to hold a target workpiece under detection;

a first image acquisition device, configured to acquire an image of the target workpiece along a first direction, the first direction is perpendicular to a plane in which the detection workspace is located;

a plurality of second image acquisition devices, configured to acquire an image of the target workpiece along directions different from the first direction;

a detection light source, configured to provide detection light for the first image acquisition device and the second image acquisition device, and comprising a first sub-light source and a second sub-light source, the second sub-light source comprising a plurality of bar-shaped light sources and configured to provide the detection light incident on a lateral surface of the target workpiece; and

a conveyor, configured to convey the target workpiece into or out of the detection workspace;

wherein:

an optical axis of the detection light provided by the first sub-light source of the detection light source is coaxial with an optical axis of the first image acquisition device;

in a plane perpendicular to the first direction, projections of the plurality of second image acquisition devices and projections of the plurality of bar-shaped light sources are alternately arranged along a circle around a center of the detection workspace at a uniform interval;

an angle between the optical axis of the first image acquisition device and an optical axis of the detection light provided by the second sub-light source is smaller than an angle between the optical axis of the first image acquisition device and an optical axis of one of the plurality of second image acquisition devices; and

the first image acquisition device, the first sub-light source, the second sub-light source and the second image acquisition device are arranged in sequence from top to bottom in the first direction.