CN-122007056-A - Battery cell grading system and battery cell grading method

CN122007056ACN 122007056 ACN122007056 ACN 122007056ACN-122007056-A

Abstract

The invention discloses a battery cell grading system and a battery cell grading method, wherein the battery cell grading system comprises a conveying module, wherein the conveying module comprises a feeding area, a grading area and a discharging area, the feeding area is provided with a distribution assembly and a first converging position, the discharging area is provided with a receiving module, a discharging level and a second return line, the receiving module is selectively connected with the first distribution line, the second distribution line or a third distribution line, the second return line is connected with the feeding area to form a closed loop, a bearing piece is conveyed by the conveying module and used for bearing a battery cell, the bearing piece is respectively sent into a first supporting line or a second supporting line by the distribution assembly to be fed, then enters the distribution area after being converged by the first converging position, enters each distribution line after being graded, the receiving module can be selectively connected with one distribution line and convey the bearing piece to enter the discharging level to be discharged, and the bearing piece returns to the feeding area through the second return line to be subjected to next distribution and feeding. The high-efficiency battery cell grading system can realize the battery cell grading.

Inventors

CHENG CONG
WANG WEIZHI
WANG ZHENGBO

Assignees

珠海华冠科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (10)

1. A battery cell indexing system, comprising: The conveying module comprises a feeding area, a dividing area and a discharging area, wherein the feeding area is provided with a dividing assembly and a first converging position, a first supporting line and a second supporting line are arranged between the dividing assembly and the first converging position in parallel, the dividing area is provided with a first branching line, a second branching line and a third branching line which are sequentially branched from the downstream of the feeding area, the discharging area is sequentially provided with a material receiving module, a discharging level and a second return line from the upstream to the downstream, and the material receiving module is selectively connected with the first branching line, the second branching line or the third branching line, and the second return line is connected with the feeding area to form a closed loop; the bearing piece is arranged on the conveying module and conveyed by the conveying module and used for bearing the battery cell; Wherein the plurality of bearing pieces to be fed are fed into the first supporting line and/or the second supporting line by the flow dividing assembly for feeding, after the feeding is completed, the bearing pieces enter the material dividing area after being converged at the first converging position, after being graded, the material enters the first branching line, the second branching line or the third branching line, and the material receiving module is selectively connected to one branching line and conveys the bearing piece into the discharging position for discharging; and the loaded bearing piece returns to the loading area through the second return line to be subjected to next diversion and loading.
2. The battery cell grading system according to claim 1, wherein the first supporting line, the second supporting line and the discharging level are provided with positioning components, and the positioning components comprise positioning installation seats and positioning linear modules arranged on the positioning installation seats; The positioning mounting seat is arranged on the conveying module; the transmission direction of the positioning linear module is perpendicular to the conveying direction of the conveying module, a positioning block is arranged at one end, close to the bearing piece, of the positioning linear module, a positioning groove corresponding to the positioning block is arranged on the side portion of the bearing piece, and the positioning linear module drives the positioning block to be clamped in or separated from the positioning groove.
3. The battery cell grading system according to claim 2, wherein the upstream end of the positioning assembly is provided with a first separation assembly comprising a first separation sensor and a first separation cylinder, and the downstream end of the positioning assembly is provided with a second separation assembly comprising a second separation sensor and a second separation cylinder; When the bearing piece is fed into the positioning assembly, the first separation air cylinder is in an open state, the second separation air cylinder is in a blocking state, the first separation air cylinder is used for collecting quantity information of the bearing piece fed into the positioning assembly, after the quantity reaches the standard, the first separation air cylinder is blocked, after the loading of the bearing piece is completed, the second separation air cylinder is opened, the bearing piece is fed out from the positioning assembly, the second separation air cylinder is used for collecting quantity information of the bearing piece fed out from the positioning assembly, after the quantity reaches the standard, the second separation air cylinder is in a blocking state, the first separation air cylinder is in an open state, and the next batch of loading of the bearing piece is carried out.
4. The cell indexing system of claim 1, wherein the indexing assembly comprises an indexing mount, an indexing cylinder, and an indexing channel; The diversion mounting seat is arranged on the conveying module; the lane-changing cylinder is arranged on the diversion mounting seat; The diversion channel is rotationally connected with the diversion mounting seat, the output end of the lane change cylinder is rotationally connected to the side part of the diversion channel and used for driving the diversion channel to rotationally change lanes, and the bearing piece is controlled to enter the first supporting line or the second supporting line.
5. The cell grading system according to claim 1, wherein a first return line is further arranged in the material dividing region after the third branching inlet and connected with the material feeding region to form a closed loop; The first branching line, the second branching line and the third branching line are respectively provided with a gear, and the 3 gear-sorting gears are different; The bearing parts for bearing the battery cells enter the first branching line, the second branching line or the third branching line after being separated by 3 steps, and the bearing parts for not bearing the battery cells return to the feeding area through the first return line.
6. The cell indexing system of claim 5, wherein the transport module is further provided with a second merge location comprising a third separator assembly disposed at an outlet of the second return line, the outlet of the first return line being disposed downstream of the third separator assembly; The first return line and the second return line are converged at the second converging position, and the third separation assembly is used for releasing or blocking the bearing piece from being sent out from the second return line.
7. The cell indexing system of claim 6, wherein the carrier has an identification code disposed thereon; The conveying module is also provided with a supporting and sweeping code assembly, and the supporting and sweeping code assembly is arranged at the downstream of the second merging position; The supporting and sweeping code component is used for collecting the identity codes on the bearing component, and the external intelligent control system binds the bearing component identity codes with the identity codes of the corresponding placed battery cells one by one.
8. The cell indexing system of claim 7, wherein an indexing sweep code assembly and an indexing push assembly are disposed in the indexing position, the indexing sweep code assembly being disposed upstream of the indexing push assembly; The grading and sweeping component is used for identifying the identity code of the bearing piece, and the grading and pushing component is used for pushing the required bearing piece into the corresponding branching line according to the set sorting gear.
9. The cell grading system according to claim 1, wherein the material receiving module comprises a channel switching sliding table, an output end of the channel switching sliding table is provided with a material receiving line, and the channel switching sliding table drives the material receiving line to be selectively connected downstream of the first branching line, the second branching line or the third branching line; after the receiving line receives materials from the first branch line, the second branch line or the third branch line, the channel switching sliding table drives the receiving line to be connected with the discharging position.
10. A method of cell indexing, characterized in that it is applied to a cell indexing system according to any one of claims 1 to 9, comprising the steps of: S1, selecting the adaptive bearing piece to be arranged on the conveying module according to the specification of the battery cell; S2, the bearing piece to be fed enters the first supporting line or the second supporting line through the splitting assembly, an external feeding module is used for placing the battery cell into the bearing piece, and after feeding is completed, the bearing piece is converged at the first converging position; s3, the combined bearing parts enter the material dividing area for grading, and enter the first branching line, the second branching line or the third branching line according to different gears; S4, the bearing piece enters the blanking area, and the battery cell is taken out of the bearing piece by an externally connected blanking module; s5, the loaded bearing piece is sent back to the loading area through the second return line to be loaded next time.

Description

Battery cell grading system and battery cell grading method Technical Field The invention relates to the field of square shell battery assembly lines, in particular to a battery cell grading system and a battery cell grading method. Background In the battery production process, after the battery is subjected to power supplementing process, an Open Circuit Voltage (OCV) test is performed, and according to an OCV test result, the battery cells are graded according to the voltage obtained by the test, and then the battery cells enter the module. The cell grading is a core link of quality control in the cell module assembly stage and the box-in assembly stage, and is directly related to the performance, safety and service life of the battery pack. The consistency and reliability of the product can be obviously improved through fine grading of the battery cells. In the prior art, a single-channel separator, a double-channel separator and an automatic grading assembly line are mainly arranged. The traditional single-channel/double-channel separator is only one special separation device in the battery production link, can only realize automatic test and separation, and the production link forms an information island with low efficiency. The automatic grading assembly line is a complete system integrating a series of procedures such as feeding, identity recognition, performance test, data analysis, automatic sorting, offline buffering and the like, the production efficiency is greatly improved through the automatic arrangement of the whole process, but the layout and feeding design of most automatic grading assembly line equipment are unreasonable, so that the cell sorting efficiency is still limited. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a battery cell grading system, which improves the battery cell grading efficiency. The invention also provides a battery cell grading method applied to the battery cell grading system. According to an embodiment of the first aspect of the present invention, a battery cell grading system includes: The conveying module comprises a feeding area, a dividing area and a discharging area, wherein the feeding area is provided with a dividing assembly and a first converging position, a first supporting line and a second supporting line are arranged between the dividing assembly and the first converging position in parallel, the dividing area is provided with a first branching line, a second branching line and a third branching line which are sequentially branched from the downstream of the feeding area, the discharging area is sequentially provided with a material receiving module, a discharging level and a second return line from the upstream to the downstream, and the material receiving module is selectively connected with the first branching line, the second branching line or the third branching line, and the second return line is connected with the feeding area to form a closed loop; the bearing piece is arranged on the conveying module and conveyed by the conveying module and used for bearing the battery cell; Wherein the plurality of bearing pieces to be fed are fed into the first supporting line and/or the second supporting line by the flow dividing assembly for feeding, after the feeding is completed, the bearing pieces enter the material dividing area after being converged at the first converging position, after being graded, the material enters the first branching line, the second branching line or the third branching line, and the material receiving module is selectively connected to one branching line and conveys the bearing piece into the discharging position for discharging; and the loaded bearing piece returns to the loading area through the second return line to be subjected to next diversion and loading. The battery cell grading system provided by the embodiment of the invention has at least the following beneficial effects: When the battery cell grading system is used, a plurality of bearing parts are placed on a conveying module, during feeding, according to the arrangement mode and the quantity of the battery cells picked up by an external connection feeding module each time, a corresponding quantity of bearing parts are respectively sent into a first supporting line and/or a second supporting line by a shunting assembly during shunting, the battery cells are placed into the bearing parts by the external connection feeding module, after the feeding is completed, the bearing parts on the first supporting line and the second supporting line are converged through a first converging position and enter a material distribution area, during material distribution, sorting is carried out according to the gear positions of the battery cells, the battery cells with different gear positions are borne by the bearing parts into a first branching line, a second bra