Granted Patent B2

US 12,544,914 · App. 18/795,222 · Granted Feb 10, 2026

Inventors: Kai Wu (Ningde, CN); Zhiyong Jing (Ningde, CN); Jun Zhao (Ningde, CN); Shaolin Chen (Ningde, CN); Ying Wu (Ningde, CN); Genli Song (Ningde, CN)

Assignee: Contemporary Amperex Technology Co., Limited

B25J9/161B23K26/0869B23K26/21B25J9/1653B25J9/1664B25J11/005B25J13/06B25J15/0019B23K2101/38

Abstract

Claims (75)

1 . A welding system, comprising a controller, a human-machine interface, and at least one welding device, wherein

the controller is configured to: determine a pre-weld ranging parameter for a battery product to be welded, based on a set of ranging values between at least two posts in the battery product and a rangefinder in the at least one welding device; and send the pre-weld ranging parameter and a current effective parameter management-control condition to the human-machine interface, the parameter management-control condition being used for verifying the pre-weld ranging parameter;

the human-machine interface is configured to: display the pre-weld ranging parameter and the parameter management-control condition; and

the at least one welding device is configured to: perform ranging of the at least two posts along a first direction using the rangefinder, to obtain the set of ranging values, the first direction being parallel to an optical axis of a laser galvanometer in the at least one welding device, the rangefinder being calibrated based on a first position in the first direction, the first position being a position of a focal point of the laser galvanometer in the first direction, and the rangefinder being at a fixed distance from the laser galvanometer in the first direction; and weld the at least two posts using the laser galvanometer, to electrically connect at least two battery cells in the battery product through a busbar,

the at least one welding device comprises a robot, the rangefinder, and the laser galvanometer, the rangefinder and the laser galvanometer being both connected to a drive end of the robot in a driven manner; the pre-weld ranging parameter comprises a first position adjustment amount for the laser galvanometer in the first direction, and the parameter management-control condition comprises a first adjustment amount scope used for verifying the first position adjustment amount; and

the robot is configured to: drive the rangefinder to move sequentially to ranging positions respectively corresponding to the at least two posts, to perform ranging of the at least two posts along the first direction, so as to obtain the set of ranging values; drive, based on the first position adjustment amount, the laser galvanometer to be subjected to a position adjustment in the first direction; and drive the position-adjusted laser galvanometer to move perpendicularly to the first direction, so as to weld the at least two posts.

2 . The welding system according to claim 1 , wherein

the controller is further configured to: send, to the robot, a first driving instruction corresponding to a target post; send a ranging instruction to the rangefinder in response to receiving a ranging start instruction; and receive a ranging value sent by the rangefinder after the rangefinder performs ranging of each of the posts, so as to obtain the set of ranging values;

the robot is further configured to: drive, in response to the first driving instruction, the rangefinder to move to a target ranging position corresponding to the target post, and send the ranging start instruction to the controller when the rangefinder reaches the target ranging position; and

the rangefinder is configured to: perform, in response to the ranging instruction, ranging of the post corresponding to the current ranging position to obtain a ranging value for the post, and send the ranging value to the controller.

3 . The welding system according to claim 2 , wherein

the controller is further configured to: send a second driving instruction to the robot; and

the robot is further configured to: drive, in response to the second driving instruction and based on the first position adjustment amount, the laser galvanometer to be subjected to the position adjustment in the first direction.

4 . The welding system according to claim 1 , wherein the controller has a signal input end, and the rangefinder has a signal output end; and

the signal output end is connected to the signal input end and is used for transmitting the ranging value measured by the rangefinder to the controller via the signal input end.

5 . The welding system according to claim 4 , wherein there are a plurality of rangefinders, and the controller has a plurality of signal input ends corresponding to the plurality of rangefinders on a one-to-one basis; and each of the signal input ends is connected to a signal output end of a corresponding one of the rangefinders.

6 . The welding system according to claim 1 , wherein

the human-machine interface is further configured to: display the pre-weld ranging parameter in a parameter display area of a ranging management-control interface, and display the parameter management-control condition in a management-control condition display area of the ranging management-control interface.

7 . The welding system according to claim 1 , wherein the at least one welding device comprises a plurality of welding devices, and the set of ranging values comprises a subset of ranging values for at least two posts that corresponds to each of the welding devices;

the controller is further configured to: determine, for each of the plurality of welding devices and based on the subset of ranging values corresponding to the welding device, a pre-weld ranging parameter corresponding to the welding device; and

the human-machine interface is further configured to: display the pre-weld ranging parameter corresponding to each of the plurality of welding devices and the current effective parameter management-control condition in a ranging management-control interface corresponding to the welding device.

8 . The welding system according to claim 1 , wherein

the human-machine interface is further configured to: display a management-control condition configuration area in a ranging management-control interface; and obtain and send a configured candidate parameter management-control condition to the controller in response to receiving a configuration operation for the parameter management-control condition in the management-control condition configuration area;

the controller is further configured to: update the current effective parameter management-control condition based on the candidate parameter management-control condition, to obtain a new effective parameter management-control condition; and

the human-machine interface is further configured to: display the new effective parameter management-control condition in the ranging management-control interface.

9 . The welding system according to claim 1 , wherein

the controller is further configured to: verify the pre-weld ranging parameter based on the parameter management-control condition, to obtain a verification result; send a prompt instruction to the human-machine interface if the verification result represents that the pre-weld ranging parameter does not match the parameter management-control condition; and send a welding instruction to the at least one welding device if the verification result represents that the pre-weld ranging parameter matches the parameter management-control condition;

the human-machine interface is further configured to: output prompt information in response to the prompt instruction; and

the at least one welding device is further configured to: weld the at least two posts using the laser galvanometer in response to the welding instruction.

10 . A spot check method for a welding system, which is applied to a controller in the welding system, wherein the welding system further comprises at least one welding device and a human-machine interface, the method comprising:

controlling a rangefinder in the at least one welding device to perform ranging, along a first direction, of at least two posts in a battery product to be welded, so as to obtain a set of ranging values between the at least two posts and the rangefinder, the first direction being parallel to an optical axis of a laser galvanometer in the at least one welding device, the rangefinder being calibrated based on a first position in the first direction, the first position being a position of a focal point of the laser galvanometer in the first direction, and the rangefinder being at a fixed distance from the laser galvanometer in the first direction;

determining a pre-weld ranging parameter for the battery product based on the set of ranging values;

controlling the human-machine interface to display the pre-weld ranging parameter and a current effective parameter management-control condition, the parameter management-control condition being used for verifying the pre-weld ranging parameter,

verifying the pre-weld ranging parameter based on the parameter management-control condition, to obtain a verification result;

controlling the human-machine interface to output prompt information if the verification result represents that the pre-weld ranging parameter does not match the parameter management-control condition; and

sending a welding instruction to the at least one welding device if the verification result represents that the pre-weld ranging parameter matches the parameter management-control condition, so as to cause the at least one welding device to weld the at least two posts using the laser galvanometer.

11 . The spot check method according to claim 10 , wherein

the controlling the human-machine interface to display the pre-weld ranging parameter and a current effective parameter management-control condition comprises:

controlling the human-machine interface to display a ranging management-control interface, the ranging management-control interface having a parameter display area and a management-control condition display area; and

controlling the human-machine interface to display the pre-weld ranging parameter in the parameter display area and to display the parameter management-control condition in the management-control condition display area.

12 . The spot check method according to claim 10 , wherein the at least one welding device comprises a plurality of welding devices, and the set of ranging values comprises a subset of ranging values for at least two posts that corresponds to each of the plurality of welding devices;

the determining a pre-weld ranging parameter for the battery product based on the set of ranging values comprises:

determining, for each of the plurality of welding devices and based on the subset of ranging values corresponding to the welding device, a pre-weld ranging parameter corresponding to the welding device; and

the controlling the human-machine interface to display the pre-weld ranging parameter and a current effective parameter management-control condition comprises:

controlling the human-machine interface to display the pre-weld ranging parameter corresponding to each of the plurality of welding devices and the current effective parameter management-control condition in a ranging management-control interface corresponding to the welding device.

13 . The spot check method according to claim 10 , wherein the pre-weld ranging parameter comprises a first position adjustment amount for the laser galvanometer in the first direction, and the parameter management-control condition comprises a first adjustment amount scope used for verifying the first position adjustment amount; and

the determining a pre-weld ranging parameter for the battery product based on the set of ranging values comprises:

determining a first offset of a welding surface of the battery product relative to the focal point based on the set of ranging values; and

determining the first position adjustment amount based on the first offset and a first defocus amount corresponding to a current welding process.

14 . The spot check method according to claim 13 , wherein the determining a first offset of a welding surface of the battery product relative to the focal point based on the set of ranging values comprises:

determining the first offset based on a difference between a first statistical value of all ranging values in the set of ranging values and a reference distance, wherein the reference distance is a distance between the calibrated rangefinder and the focal point, and the first statistical value comprises a midrange and/or a preset statistical quantile.

15 . The spot check method according to claim 10 , wherein the method further comprises:

controlling the human-machine interface to display a management-control condition configuration area in a ranging management-control interface;

obtaining a configured candidate parameter management-control condition in response to receiving a configuration operation for the parameter management-control condition by the human-machine interface in the management-control condition configuration area;

updating the current effective parameter management-control condition based on the candidate parameter management-control condition, to obtain a new effective parameter management-control condition; and

controlling the human-machine interface to display the new effective parameter management-control condition.

16 . The spot check method according to claim 15 , wherein the updating the current effective parameter management-control condition based on the candidate parameter management-control condition, to obtain a new effective parameter management-control condition comprises:

obtaining a parameter configuration permission corresponding to a role of a current user; and

determining the candidate parameter management-control condition as the new effective parameter management-control condition if the candidate parameter management-control condition matches the parameter configuration permission.

17 . A welding system, comprising a controller, a human-machine interface, and at least one welding device, wherein

the controller is configured to: determine a pre-weld ranging parameter for a battery product to be welded, based on a set of ranging values between at least two posts in the battery product and a rangefinder in the at least one welding device; and send the pre-weld ranging parameter and a current effective parameter management-control condition to the human-machine interface, the parameter management-control condition being used for verifying the pre-weld ranging parameter;

the human-machine interface is configured to: display the pre-weld ranging parameter and the parameter management-control condition;

the at least one welding device is configured to: perform ranging of the at least two posts along a first direction using the rangefinder, to obtain the set of ranging values, the first direction being parallel to an optical axis of a laser galvanometer in the at least one welding device, the rangefinder being calibrated based on a first position in the first direction, the first position being a position of a focal point of the laser galvanometer in the first direction, and the rangefinder being at a fixed distance from the laser galvanometer in the first direction; and weld the at least two posts using the laser galvanometer, to electrically connect at least two battery cells in the battery product through a busbar,

the at least one welding device comprises a plurality of welding devices, and the set of ranging values comprises a subset of ranging values for at least two posts that corresponds to each of the plurality of welding devices;

the controller is further configured to: determine, for each of the plurality of welding devices and based on the subset of ranging values corresponding to the welding device, a pre-weld ranging parameter corresponding to the welding device; and

the human-machine interface is further configured to: display the pre-weld ranging parameter corresponding to each of the plurality of welding devices and the current effective parameter management-control condition in a ranging management-control interface corresponding to the welding device.

18 . The welding system according to claim 17 , wherein the human-machine interface is further configured to: display a management-control condition configuration area in a ranging management-control interface; and obtain and send a configured candidate parameter management-control condition to the controller in response to receiving a configuration operation for the parameter management-control condition in the management-control condition configuration area;

the controller is further configured to: update the current effective parameter management-control condition based on the candidate parameter management-control condition, to obtain a new effective parameter management-control condition; and

the human-machine interface is further configured to: display the new effective parameter management-control condition in the ranging management-control interface.

19 . The welding system according to claim 17 , wherein

the controller is further configured to: verify the pre-weld ranging parameter based on the parameter management-control condition, to obtain a verification result; send a prompt instruction to the human-machine interface if the verification result represents that the pre-weld ranging parameter does not match the parameter management-control condition; and send a welding instruction to the at least one welding device if the verification result represents that the pre-weld ranging parameter matches the parameter management-control condition;

the human-machine interface is further configured to: output prompt information in response to the prompt instruction; and

the at least one welding device is further configured to: weld the at least two posts using the laser galvanometer in response to the welding instruction.

20 . The welding system according to claim 17 , wherein

the human-machine interface is further configured to: display the pre-weld ranging parameter in a parameter display area of a ranging management-control interface, and display the parameter management-control condition in a management-control condition display area of the ranging management-control interface.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (38)