CN112490509B

CN112490509B - Battery cell pairing method

Info

Publication number: CN112490509B
Application number: CN202011348258.2A
Authority: CN
Inventors: 钟小兰; 周佐喜; 杜义贤; 周俊雄; 周俊杰
Original assignee: Guangdong Lyric Robot Intelligent Automation Co Ltd
Current assignee: Guangdong Lyric Robot Automation Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2022-07-01
Anticipated expiration: 2040-11-26
Also published as: CN112490509A

Abstract

The invention discloses a battery cell pairing method, wherein a first feeding area and a second feeding area which are arranged in parallel form an A stacking group and a B stacking group which are sequentially arranged, the A stacking group of the first feeding area is moved to the second feeding area or the B stacking group of the second feeding area is moved to the first feeding area, the A stacking group and the B stacking group are sequentially arranged at intervals, and the A stacking group and the B stacking group are rotated, so that every two adjacent A stacking groups are opposite to positive and negative lugs of the B stacking group, the pairing process of four battery cell lugs is simply and smoothly completed, and the pairing efficiency of the four battery cell lugs is ensured.

Description

Battery cell pairing method

Technical Field

The invention relates to the technical field of battery cell pairing, in particular to a battery cell pairing method.

Background

As a new energy source, lithium ion batteries are widely used in various fields, and it is very important to ensure the automatic production of lithium ion batteries. The pairing of the battery cell lugs is an important process in the automatic production process of the battery, wherein the lugs of four battery cells need to be paired to ensure that the lugs of two groups of stacked battery cells form a positive-opposite relation respectively, so that the subsequent process is convenient to execute, and the traditional method for pairing the four battery cell lugs is complex, so that the efficiency of pairing the four battery cell lugs is influenced.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides a cell pairing method which can meet the requirement of a pairing process, simplify the pairing process and improve the pairing efficiency.

According to an embodiment of the first aspect of the present invention, there is provided a cell pairing method, including the following steps:

s1: forming a first feeding area and a second feeding area, wherein the first feeding area comprises 2N cells A which are arranged in sequence, the second feeding area comprises 2N cells B which are arranged in sequence, and N is an integer greater than 1;

s2: moving the N A battery cells to enable the first feeding area to form N A stacking groups which are arranged in sequence, wherein each A stacking group comprises two A battery cells, positive lugs of the two A battery cells correspond to positive lugs of the two A battery cells, and negative lugs of the two A battery cells correspond to negative lugs of the two A battery cells; moving the N B battery cells to enable the second feeding area to form N B stacking groups which are arranged in sequence, wherein each B stacking group comprises two B battery cells, positive lugs of the two B battery cells correspond to each other, and negative lugs of the two B battery cells correspond to each other;

s3: moving the A stacking group to the second feeding area or moving the B stacking group to the first feeding area, pairwise pairing the A stacking group and the B stacking group to form a pairing group, and rotating the A stacking group and the B stacking group of the pairing group to ensure that a positive tab of the A stacking group of the pairing group is just opposite to a positive tab of the B stacking group, and a negative tab of the A stacking group of the pairing group is just opposite to a negative tab of the B stacking group.

Has the advantages that: compared with the prior art, N A stacking groups and N B stacking groups which are sequentially arranged are formed through a first feeding area and a second feeding area respectively, the A stacking groups of the first feeding area are moved to the second feeding area or the B stacking groups of the second feeding area are moved to the first feeding area, the A stacking groups and the B stacking groups are pairwise paired to form a pairing group, and then the A stacking groups and the B stacking groups of the pairing group are rotated, so that the A stacking groups and the B stacking groups of the pairing group are right opposite to positive lugs of the group, the A stacking groups and the B stacking groups of the pairing group are right opposite to negative lugs, the pairing process of four battery cell lugs is simply and smoothly completed, and the pairing efficiency of the four battery cell lugs is ensured.

According to the battery cell pairing method in the embodiment of the first aspect of the present invention, in step S1, the placing postures of the battery cells a are the same, the placing postures of the battery cells B are the same, the positive and negative electrode tabs of the battery cells a and B are perpendicular to the feeding direction, and the positive electrode tabs and the negative electrode tabs of the battery cells a and B are arranged in opposite order.

According to the cell pairing method in the embodiment of the first aspect of the present invention, in step S2, the a cells are stacked adjacent to each other to form an a stack group, and the B cells are stacked adjacent to each other to form a B stack group.

According to the cell pairing method in the embodiment of the first aspect of the present invention, in step S3, the stack group a is moved to the second feeding area, and the stack group a and the stack group B are arranged in sequence at intervals, two stack groups a and two stack groups B form a pair group, and then the stack group a and the stack group B of each pair group are rotated so that the positive electrode tab of the stack group a of the pair group and the positive electrode tab of the stack group B face each other, and the negative electrode tab of the stack group a of the pair group and the negative electrode tab of the stack group B face each other.

According to the cell pairing method in the embodiment of the first aspect of the present invention, in step S3, the B stack group is moved to the first feeding area, and the B stack group and the a stack group are arranged at intervals in sequence, the a stack group and the B stack group form a pair group two by two, and the a stack group and the B stack group of each pair group are rotated, so that the positive tab of the a stack group and the positive tab of the B stack group of the pair group face each other, and the negative tab of the a stack group and the negative tab of the B stack group of the pair group face each other.

According to the cell pairing method of the embodiment of the first aspect of the invention, in step S3, the a stack groups in odd numbers are moved to the second loading area and the B stack groups in even numbers are moved to the first loading area, or moving the A stacking group with the even number to the second feeding area and moving the B stacking group with the odd number to the first feeding area, so that the A stacking group with the odd number and the B stacking group with the odd number or the A stacking group with the even number and the B stacking group with the even number form a matched group in pairs, the paired groups are distributed in the first feeding area and the second feeding area, the A stacking group and the B stacking group of each paired group are rotated, therefore, the positive electrode lug of the stacking group A and the positive electrode lug of the stacking group B of the matching group are opposite, and the negative electrode lug of the stacking group A and the negative electrode lug of the stacking group B of the matching group are opposite.

According to the cell pairing method in the embodiment of the first aspect of the present invention, in step S3, when the stack group a is located at an odd number, the stack group a is rotated clockwise, the stack group B is rotated counterclockwise, so that the positive and negative electrode tabs of the stack group a and the stack group B are parallel to the feeding direction, when the stack group a is located at an even number, the stack group a is rotated counterclockwise, and the stack group B is rotated clockwise, so that the positive and negative electrode tabs of the stack group a and the stack group B are parallel to the feeding direction.

According to a second aspect of the present invention, there is provided a cell pairing method, including:

a1: forming a first feeding area and a second feeding area, wherein the first feeding area comprises 2N cells A which are arranged in sequence, the second feeding area comprises 2N cells B which are arranged in sequence, and N is an integer greater than 1;

moving the A2 to enable the first feeding area to form N A stacking groups which are arranged in sequence, wherein each A stacking group comprises two A battery cells, positive electrode lugs of the two A battery cells correspond to positive electrode lugs of the two A battery cells, and negative electrode lugs of the two A battery cells correspond to negative electrode lugs of the two A battery cells; moving the N B battery cells to enable the second feeding area to form N B stacking groups which are sequentially arranged, wherein each B stacking group comprises two B battery cells, positive lugs of the two B battery cells correspond to each other, and negative lugs of the two B battery cells correspond to each other;

a3: rotating the A stacking group and turning over the odd A stacking group or the even A stacking group to enable positive lugs of the odd A stacking group and positive lugs of the even A stacking group in the first feeding region to be opposite, and enable negative lugs of the odd A stacking group and negative lugs of the even A stacking group in the first feeding region to be opposite; and rotating the B stacking group, and turning over the odd number of the B stacking group or the even number of the B stacking group, so that the positive electrode lug of the odd number of the B stacking group in the second feeding region is opposite to the positive electrode lug of the even number of the B stacking group, and the negative electrode lug of the odd number of the B stacking group in the second feeding region is opposite to the negative electrode lug of the even number of the B stacking group.

Has the advantages that: compared with the prior art, N A stacking groups and N B stacking groups which are sequentially arranged are respectively formed in the first feeding area and the second feeding area, the A stacking groups in the first feeding area are rotated, the odd-number-position or even-number-position A stacking groups are turned over at intervals, so that the positive lugs in the odd-number-position A stacking groups and the even-number-position A stacking groups in the first feeding area are opposite, the negative lugs in the odd-number-position A stacking groups and the even-number-position A stacking groups are opposite, the B stacking groups in the second feeding area are rotated, the odd-number-position or even-number-position B stacking groups are turned over at intervals, the positive lugs of the odd-number-position B stacking groups and the even-number-position B stacking groups in the second feeding area are opposite, the negative lugs of the odd-number-position B stacking groups and the even-position B stacking groups are opposite, the pairing process of the four battery cell lugs is simply and smoothly completed, and the pairing efficiency of the four battery cells is ensured.

According to the cell pairing method in the embodiment of the second aspect of the present invention, in step a3, the a stack groups in odd number are rotated clockwise, the a stack groups in even number are rotated counterclockwise, so that the positive and negative tabs of each a stack group are parallel to the feeding direction, and the a stack groups in odd number or even number are turned over, so that the positive tabs of the a stack groups in odd number are aligned with the positive tabs of the a stack groups in even number, and the negative tabs of the B stack groups in odd number are aligned with the negative tabs of the B stack groups in even number.

According to the battery cell pairing method in the embodiment of the second aspect of the present invention, in step a3, the odd-numbered B stack group is rotated clockwise, and the even-numbered B stack group is rotated counterclockwise, so that the positive and negative electrode tabs of the B stack group are parallel to the feeding direction, and the odd-numbered or even-numbered B stack group is turned over, so that the positive electrode tab of the odd-numbered B stack group is opposite to the positive electrode tab of the even-numbered B stack group, and the negative electrode tab of the odd-numbered B stack group is opposite to the negative electrode tab of the even-numbered B stack group.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

fig. 1 is a flowchart of a cell pairing method according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a first feeding area and a second feeding area in the first and second embodiments of the present invention;

FIG. 3 is a schematic diagram of the formation of the A stack group and the B stack group in the first and second embodiments of the present invention;

FIG. 4 is a first process diagram illustrating the alignment of the A stack and the B stack according to a first embodiment of the present invention;

FIG. 5 is a second schematic diagram illustrating the process of pairing the stack group A and the stack group B according to the first embodiment of the present invention;

fig. 6 is a flowchart of a battery cell pairing method according to a second embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a process of pairing the stack group a and the stack group B according to a second embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, fig. 1 is a flowchart of a cell pairing method according to an embodiment. The cell pairing method in this embodiment includes the following steps:

s1: a first feeding area 10 and a second feeding area 20 which are arranged in parallel are respectively formed, the first feeding area 10 comprises 2N sequentially-arranged A cells 11, the second feeding area 20 comprises 2N sequentially-arranged B cells 21, and N is an integer greater than 1;

s2, moving the N a cells 11 to form N a-stack groups 111 in sequence from the a cells 11 of the first loading area 10, where each a-stack group 111 includes two a cells 11, positive tabs of the two a cells 11 correspond to positive tabs of the two a cells 11, and negative tabs of the two a cells 11 correspond to negative tabs of the two a cells 11; moving the N B cells 21 so that the B cells 21 of the second loading area 20 form N B stacked groups 211 arranged in sequence, where each B stacked group 211 includes two B cells 21, positive tabs of the two B cells 21 correspond to each other, and negative tabs of the two B cells 21 correspond to each other;

s3: moving the a stacking group 111 to the second feeding area 20 or moving the B stacking group 211 to the first feeding area 10, pairwise pairing the a stacking group 111 and the B stacking group 211 to form a pairing group, and rotating the a stacking group 111 and the B stacking group 211 of the pairing group so that the positive tab of the a stacking group 111 of the pairing group is opposite to the positive tab of the B stacking group 211, and the negative tab of the a stacking group 111 of the pairing group is opposite to the negative tab of the B stacking group 211.

According to the cell pairing method, N A stacking groups 111 and N B stacking groups 211 which are sequentially arranged are respectively formed in a first feeding area 10 and a second feeding area 20 which are arranged in parallel, the A stacking groups 111 of the first feeding area 10 are moved to the second feeding area 20 or the B stacking groups 211 of the second feeding area 20 are moved to the first feeding area 10, the A stacking groups 111 and the B stacking groups 211 are pairwise paired to form a pairing group, and the A stacking groups 111 and the B stacking groups 211 are rotated, so that positive lugs of the A stacking groups 111 of the pairing group are opposite to positive lugs of the B stacking groups 211, negative lugs of the A stacking groups 111 of the pairing group are opposite to negative lugs of the B stacking groups 211, the pairing process of four cell lugs is simply and smoothly completed, and the pairing efficiency of the four cell lugs is ensured.

It will be appreciated that the first feeding zone 10 and the second feeding zone 20 are both linear feeding zones. The first feeding area 10 and the second feeding area 20 in this embodiment are two feeding lines arranged in parallel with each other. Of course, it is understood that the first feeding area 10 and the second feeding area 20 may also be two parallel linear feeding areas on the same feeding line.

Referring to fig. 1 and 2, fig. 2 is a schematic structural view of a first loading area 10 and a second loading area 20. Further, in step S1, the positive tab and the negative tab of the a cell 11 are located on the same side, the placement postures of the multiple a cells 11 in the first loading area 10 are the same, the positive tab and the negative tab of the a cell 11 are oriented in a direction perpendicular to the feeding direction of the first loading area 10, the positive tab and the negative tab of the B cell 21 are located on the same side, the placement postures of the multiple B cells 21 in the second loading area 20 are the same, the positive tab and the negative tab of the B cell 21 are oriented in a direction perpendicular to the feeding direction of the second loading area 20, and the positive tab and the negative tab of the a cell 11 in the first loading area 10 and the positive tab and the negative tab of the B cell 21 in the second loading area 20 are arranged in an opposite order. Specifically, the positive tab of the a cell 11 is in front, the negative tab of the a cell 11 is behind, the positive tab of the B cell 21 is behind, and the negative tab of the B cell 21 is in front.

In step S1, the a cell 11 and the B cell 21 are loaded through the first loading area 10 and the second loading area 20, respectively, so that the sorting and loading are facilitated, and the formation and pairing process of the subsequent stack group is also facilitated. It is understood that the first feeding area 10 and the second feeding area 20 are arranged side by side, which may facilitate further reducing the subsequent movement of the B stack group 211 to the first feeding area 10 or the a stack group 111 to the second feeding area 20, and improve the overall pairing efficiency. The first feeding area 10 and the second feeding area 20 which are arranged side by side simultaneously facilitate the four-cell tab pairing of the stacking group a 111 in the first feeding area 10 and the stacking group B211 in the second feeding area 20.

Specifically, the a cell 11 and the B cell 21 in this embodiment are both plate-shaped cells, each of which has a cell main body, a positive electrode tab and a negative electrode tab, and the positive electrode tab and the negative electrode tab are both disposed at the head of the cell main body and are sequentially arranged along the width direction of the head of the cell main body. 2N A electric core 11 arrange in proper order in first material loading region 10, and the A electric core of whole first material loading region 10 is the arrangement mode of "AAA.. AAA" for whole first material loading region 10 is linear setting, when concrete application, can adopt a plurality of tools of transmission line cooperation to convey a plurality of A electric core 11, and the pay-off direction of first material loading region 10 is the direction of delivery of transmission line promptly.

Similarly, it can be understood that 2N B cells 21 are sequentially arranged in the second loading area 20, and the B cells 21 in the whole second loading area 20 are arranged in a "BBB.. BBB" manner, so that the whole second loading area 20 is linearly arranged. When in specific application, another conveying line can be adopted to cooperate with a plurality of jigs to convey a plurality of B electric cores 21, the feeding direction of the second feeding area 20 is the conveying direction of another conveying line, and the conveying line in this embodiment can be a conveying belt. The feeding direction of the first feeding area 10 is the same as the feeding direction of the second feeding area 20. It is defined that the same direction as the feeding direction of the first feeding area 10 or the feeding direction of the second feeding area 20 is a front direction, and the opposite direction to the feeding direction of the first feeding area 10 or the feeding direction of the B feeding area is a rear direction.

The positive electrode tab and the negative electrode tab of the a cell 11 are located on the same side, and the placing postures of the a cells 11 in the first feeding area 10 are the same; the positive electrode tab and the negative electrode tab of the B cell 21 are located on the same side, and the placement postures of the plurality of B cells 21 in the second loading area 20 are the same. Specifically, if one side of the defined paper is the first side, and the other side opposite to the defined paper is the second side, the positive electrode tab and the negative electrode tab of the a battery cell 11 are located at the first side, the positive electrode tab and the negative electrode tab of the B battery cell 21 are also located at the first side, and the placing postures of the plurality of a battery cells 11 in the first loading area 10 are the same, and the placing postures of the plurality of B battery cells 21 in the second loading area 20 are the same, in this embodiment, the a battery cell 11 is laid in the jig of the first loading area 10, and the B battery cell 21 is also laid in the jig of the second loading area 20.

The positive electrode lug and the negative electrode lug of the A battery cell 11 face towards the direction perpendicular to the feeding direction of the first feeding area 10, and the positive electrode lug of the A battery cell 11 is in front of the positive electrode lug and the negative electrode lug is behind the negative electrode lug; the positive electrode tab and the negative electrode tab of the B battery cell 21 face the direction perpendicular to the feeding direction of the second feeding area 20, and the positive electrode tab and the negative electrode tab of the B battery cell 21 are behind and in front. Specifically, the orientations of the positive and negative electrode tabs of the battery cell a 11 and the orientations of the positive and negative electrode tabs of the battery cell B21 are both perpendicular to the feeding direction. The positive electrode tab and the negative electrode tab of the a cell 11 are sequentially arranged along the feeding direction of the first feeding region 10, and the negative electrode tab and the positive electrode tab of the B cell 21 are sequentially arranged along the feeding direction of the second feeding region 20. Because the feeding direction of the first feeding area 10 and the feeding direction of the second feeding area 20 are the same, the discharge direction of the positive electrode tab and the negative electrode tab of the a cell 11 at the head of the cell body is opposite to or opposite to the discharge direction of the positive electrode tab and the negative electrode tab of the B cell 21 at the head of the cell body. In this way, the formation of subsequent stacked groups on the first feeding area 10 and the second feeding area 20, respectively, and the implementation of the four-cell tab pairing between the subsequent first feeding area 10 and the second feeding area 20 can be facilitated.

Referring to fig. 3, further, in step S2, in the first loading area 10, the adjacent odd-numbered a cell 11 and even-numbered a cell 11 are a loading group, the odd-numbered a cell 11 in a loading group is movably stacked on the even-numbered a cell 11, or the even-numbered a cell 11 is movably stacked on the odd-numbered a cell 11. Similarly, it is understood that, in the second loading region 20, adjacent odd-numbered B cells 21 and even-numbered B cells 21 are a loading group, and the odd-numbered B cells 21 in the loading group are movably stacked on the even-numbered B cells 21, or the even-numbered B cells 21 are movably stacked on the odd-numbered B cells 21. Thereby stacking adjacent a cells 11 and adjacent B cells 21 to form an a-stack group 111 and a B-stack group 211, respectively.

The placing postures of the multiple a cells 11 in the first loading area 10 are the same, the placing postures of the multiple B cells 21 in the second loading area 20 are the same, the adjacent a cells 11 in the first loading area 10 are stacked to form an a stacked group 111 in sequence arrangement, and the adjacent B cells 21 in the second loading area 20 are stacked to form a B stacked group 211 in sequence arrangement, so that the cell tabs in the stacked groups are paired, the a stacked group 111 in the first loading area 10 is in one-to-one correspondence with the B stacked group 211 in the second loading area 20, and the subsequent four-cell tab pairing can be facilitated.

Referring to fig. 4, fig. 4 is a first schematic diagram illustrating a process of pairing the stack group a 111 and the stack group B211 according to a first embodiment. Specifically, in the first loading region 10, the a cells 11 form an arrangement of "AAA.. AAA", and in the second loading region 20, the B cells 21 form an arrangement of "BBB.. BBB", and adjacent odd-numbered a cells 11 and even-numbered a cells 11 are stacked to form an a stacked group 111, and adjacent odd-numbered B cells 21 and even-numbered B cells 21 are stacked to form a B stacked group 211. Moving the a stacking group 111 in the first feeding area 10 to the second feeding area 20, and arranging the a stacking group 111 and the B stacking group 211 in sequence at intervals, so that the a stacking group 111 in the first feeding area 10 and the B stacking group 211 in the second feeding area 20 are paired two by two to form a paired group, the paired group is distributed in the second feeding area 20, the a stacking group 111 is located at an odd number position and the B stacking group 211 is located at an even number position, the a stacking group 111 and the B stacking group 211 together form an arrangement of "ABAB. The left and right tabs of the stacking group A111 in the matching group are respectively a negative tab and a positive tab, and the left and right tabs of the stacking group B211 are respectively a positive tab and a negative tab. The tab direction of the A stacking group 111 is rotated clockwise by 90 degrees, and the tab direction of the B stacking group 211 is rotated counterclockwise by 90 degrees, so that the positive tabs of the A stacking group 111 and the B stacking group 211 in the matching group are opposite, the negative tabs of the A stacking group 111 and the negative tabs of the B stacking group 211 in the matching group are opposite, and the tab pairing in the stacking group is completed.

In this manner, adjacent two a cells 11 in the first loading area 10 are stacked to form an a-stack group 111, and similarly, adjacent two B cells 21 in the second loading area 20 are stacked to form a B-stack group 211, and since the a cells 11 and the B cells 21 are arranged in order, the a-stack group 111 formed by the a cells 11 and the B-stack group 211 formed by the B cells 21 are also arranged in order. The whole forming process of the stacked group only needs to be finished in the first feeding area 10 and the second feeding area 20 respectively, the process is very simple, and the occupied space is small during specific implementation operation. When specifically applying, the action that the upset of A electricity core 11 and B electricity core 21 was removed and is piled up and place can adopt the cooperation of current centre gripping manipulator and linear module to realize, and here is no longer repeated one by one.

Adjacent odd-numbered a cells 11 and even-numbered a cells 11 are stacked to form an a stack group 111, and adjacent odd-numbered B cells 21 and even-numbered B cells 21 are stacked to form a B stack group 211. The A stacking group 111 of the first feeding area 10 is moved to the second feeding area 20, the A stacking group 111 and the B stacking group 211 are paired pairwise to form a matching group, the A stacking group 111 is located at an even position, the B stacking group 211 is located at an odd position, the tab direction of the A stacking group 111 is rotated anticlockwise by 90 degrees, the tab direction of the B stacking group 211 is rotated clockwise by 90 degrees, after rotation, the A stacking group 111 in each matching group is opposite to the positive tab of the B stacking group 211, the A stacking group 111 in the matching group is opposite to the positive tab of the B stacking group 211, and the four-cell tab pairing is realized. So, carry out the syntropy through the group of piling up of odd number position and rotate, the group of piling up of even number position also carries out the syntropy, and rotates with 90 angles, and rotation amplitude is less, so can promote rotatory smoothness nature to further promote the speed of pairing of four electric core utmost point ears.

Specifically, when the odd-numbered B-stacked group 211 rotates clockwise by 90 °, and the even-numbered a-stacked group 111 rotates counterclockwise by 90 °, the even-numbered a-stacked group 111 sequentially adjacent to any odd-numbered B-stacked group 211 forms a tab-facing relationship, that is, the positive tab of the odd-numbered B-stacked group 211 in each two adjacent stacked groups faces the positive tab of the even-numbered a-stacked group 111, and the negative tab of the odd-numbered B-stacked group 211 faces the negative tab of the even-numbered a-stacked group 111. For example, the positive and negative electrode tabs of the position 1B stacked group 211 are opposite to the positive and negative electrode tabs of the position 2 a stacked group 111, and the positive and negative electrode tabs of the position 3B stacked group 211 are opposite to the positive and negative electrode tabs of the position 4 a stacked group 111. Specifically, the positive electrode tab and the negative electrode tab of the a cell 11 located above the stack in the odd-numbered B stack group 211 are respectively opposite to the positive electrode tab and the negative electrode tab of the B cell 21 located above the stack in the even-numbered B stack group 211, and the positive electrode tab and the negative electrode tab of the a cell 11 located below the stack in the odd-numbered stack group are respectively opposite to the positive electrode tab and the negative electrode tab of the B cell 21 located below the stack in the even-numbered B stack group 211, that is, the positive electrode tab and the negative electrode tab of the odd-numbered a stack group 111 in every two adjacent stack groups are opposite to the positive electrode tab and the negative electrode tab of the even-numbered B stack group 211, so that tab pairing between the stack groups is completed. Therefore, on the basis that the lugs in the A stacking group 111 and the B stacking group 211 are paired, the lug pairing between the two adjacent A stacking group 111 and B stacking group 211 is completed, and the four-cell lug pairing is completed. In specific application, the rotation action can be realized by matching the existing rotating cylinder with the clamping manipulator, and the details are not repeated here.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating a process of pairing the stack group a 111 and the stack group B211 according to the first embodiment. Similarly, it can be understood that the B stack group 211 is moved to the first feeding area 10, the B stack group 211 and the a stack group 111 are arranged in order at intervals, the a stack group 111 and the B stack group 211 form a pair group pairwise, the pair group is distributed in the first feeding area 10, the a stack group 111 and the B stack group 211 of the pair group are rotated, so that the positive tab of the a stack group 111 of the pair group faces the positive tab of the B stack group 211, and the negative tab of the a stack group 111 of the pair group faces the negative tab of the B stack group 211.

In the above manner, the stacking group a 111 is moved to the second feeding area 20 or the stacking group B is moved to the first feeding area 10, which results in no process in one of the two feeding areas, resulting in waste, and also results in heavy workload and reduced matching space in a single feeding area. Therefore, in order to improve the above defect, odd-numbered a-stack group 111 is moved to second feeding section 20 and even-numbered B-stack group 211 is moved to first feeding section 10, or even-numbered a-stack group 111 is moved to second feeding section 20 and odd-numbered B-stack group 211 is moved to first feeding section 10, odd-numbered a-stack group 111 and odd-numbered B-stack group 211 or even-numbered a-stack group 111 and even-numbered B-stack group 211 are pairwise formed into a pairing group, the pairing group is uniformly distributed in first feeding section 10 and second feeding section 20, a-stack group 111 and B-stack group 211 of each pairing group are rotated so that positive electrode tabs of a-stack group 111 and B-stack group 211 of the pairing group face each other, and negative electrode tabs of a-stack group 111 and B-stack group 211 of the pairing group face each other. By adopting the moving method of the embodiment, the first feeding area 10 and the second feeding area 20 are both provided with the matching group, and the matching group of the two feeding areas is distributed uniformly.

In the above embodiment, in step S3, the a stack group 111 is moved to the second feeding area 20 or the B stack group 211 is moved to the first feeding area 10, the a stack group 111 and the B stack group 211 are paired two by two to form a paired group, and the a stack group 111 and the B stack group 211 are rotated without including an actual working order. To pair the a-stack group 111 and the B-stack group 211, the a-stack group 111 and the B-stack group 211 need to be moved and rotated. It is understood that in actual operation, a stack group 111 and B stack group 211 may be moved first, and then a stack group 111 and B stack group 211 may be rotated. The moving and the rotating can be carried out simultaneously, or the stacking group A111 and the stacking group B211 can be rotated firstly, and the pole lugs which can meet the final pairing requirement are opposite.

Further, before step S1, the a cell 11 is subjected to the loading detection, and the B cell 21 is subjected to the loading detection. Through detecting the A battery cell 11 and the B battery cell 21 before loading, the unqualified A battery cell 11 and the unqualified B battery cell 21 are timely removed, and the unqualified battery cells are prevented from entering a subsequent pairing process, so that the quality of final finished products is influenced. In this embodiment, the existing appearance detection device, for example, a CCD camera, is used to detect the appearances of the a cell 11 and the B cell 21, and the a cell 11 or the B cell 21 with a defective appearance is excluded.

As can be understood, after the loading, the defective a cell 11 and B cell 21 are excluded, and the defective a cell 11 and B cell 21 are subjected to code scanning. The qualified a battery cell 11 and the qualified B battery cell 21 are scanned, so that the a battery cell 11 and the B battery cell 21 are marked, and subsequent production management is facilitated. A battery cell 11 and a B battery cell 21 after code scanning are transferred to a transmission line to form a first feeding area 10 and a second feeding area 20, and if the code scanning is unqualified, the A battery cell 11 and the B battery cell 21 which are unqualified in code scanning need to be removed. When concrete application, the sign indicating number of sweeping of A electric core 11 and B electric core 21 can adopt current sign indicating number rifle of sweeping to go on, and its transfer process can adopt the cooperation of linear module and centre gripping manipulator.

As can be appreciated, after the a stack group 111 and the B stack group 211 are formed, the first feeding section 10 is fixed to form the sequentially arranged a stack group 111; the B-stack group 211 in which the second feeding section 20 is formed in order is fixed. Through piling up group 111 and B to A and piling up the fixed of group 211 for pile up the group and form a whole, avoid piling up the group and remove or rotatory in-process electric core dislocation appears, the influence pairs the effect. In a specific application, the side walls of the a battery cell 11 in the a stacking group 111 and the B battery cell 21 in the B stacking group 211 can be glued and fixed by using the existing gluing device, so that the stacking groups are fixed into a whole.

Referring to fig. 6, fig. 6 is a flowchart of a battery cell pairing method according to a second embodiment. A cell pairing method, comprising:

a1: respectively forming a first feeding area 10 and a second feeding area 20 which are arranged in parallel, wherein the first feeding area 10 comprises 2N A electric cores 11 which are arranged in sequence, the second feeding area 20 comprises 2N B electric cores 21 which are arranged in sequence, and N is an integer which is more than one;

a2: the first loading area 10 forms N a-stacking groups 111 arranged in sequence, each a-stacking group 111 includes two a-cells 11, positive tabs of the two a-cells 11 correspond to each other, and negative tabs of the two a-cells 11 correspond to each other; the second loading area 20 forms N B stacking groups 211 arranged in sequence, each B stacking group 211 includes two B cells 21, positive electrode tabs of the two B cells 21 correspond to each other, and negative electrode tabs of the two B cells correspond to each other;

a3: the a stack group 111 of the first loading zone 10 is rotated, and either the odd-numbered a stack group 111 or the even-numbered a stack group 111 is turned over so that the positive electrode tabs of the odd-numbered a stack group 111 and the even-numbered a stack group 111 face each other in the first loading zone 10, the negative electrode tabs of the odd-numbered a stack group 111 and the even-numbered a stack group 111 face each other, the B stack group is rotated, and either the odd-numbered B stack group 211 or the even-numbered B stack group 211 is turned over so that the positive electrode tabs of the odd-numbered B stack group 211 and the even-numbered B stack group 211 face each other in the second loading zone 20, and the negative electrode tabs of the odd-numbered B stack group 211 and the negative electrode tabs of the even-numbered B stack group 211 face each other in the second loading zone 20.

The battery cell pairing method in the embodiment is the same as the battery cell pairing method in the embodiment in that: a first feeding area 10 and a second feeding area 20 which are arranged in parallel are respectively formed, the first feeding area 10 comprises 2N a cells 11 which are arranged in sequence, the second feeding area 20 comprises 2N B cells 21 which are arranged in sequence, the feeding and arrangement of the a cells 11 of the first feeding area 10 and the B cells 21 of the second feeding area 20 are completely the same as that of the first embodiment, the first feeding area 10 forms N a stacking groups 111 which are arranged in sequence, each a stacking group 111 comprises two a cells 11, the positive electrode ears of the two a cells 11 correspond to each other, and the negative electrode ears of the two a cells correspond to each other; the second loading area 20 forms N B stacking groups 211 arranged in sequence, each B stacking group 211 includes two B cells 21, positive tabs of the two B cells 21 correspond to positive tabs of the two B cells, negative tabs of the two B cells correspond to negative tabs of the two B cells, and a manner in which the first loading area 10 forms the a stacking group 111 and the second loading area 20 forms the B stacking group 211 is completely the same as that in the first embodiment, and details thereof are not repeated.

The difference lies in that: in the manner in which the first feeding section 10 and the second feeding section 20 form a paired group, the a-stack group 111 is operated alone in the first feeding section 10, and the B-stack group 211 is operated alone in the second feeding section 20, so that the positive electrode tabs in the odd-numbered a-stack group 111 and the even-numbered a-stack group 111 of the first feeding section 10 face each other, and the negative electrode tabs in the odd-numbered a-stack group 111 and the even-numbered a-stack group 111 of the first feeding section 10 face each other. Compared with the first embodiment, the first stacking group 111 of the first feeding area 10 does not need to be moved to the second feeding area 20 or the second stacking group 211 of the second feeding area 20 does not need to be moved to the first feeding area 10, so that the pairing process of the four-cell tabs is simply and smoothly completed, and the pairing efficiency of the four-cell tabs is ensured. It is understood that in the second embodiment, only one loading area may be formed, and then the cell pairing may be performed in the loading area according to the above method, which is also within the protection scope.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating a process of pairing the stack group a 111 and the stack group B211 according to the second embodiment. It can be understood that the tab direction of the odd-numbered a-stacked group 111 of the first feeding area 10 is rotated by 90 ° clockwise, and the tab direction of the even-numbered a-stacked group 111 of the first feeding area 10 is rotated by 90 ° counterclockwise, so that the positive and negative tabs of the a-stacked group are parallel to the feeding direction, and the odd-numbered a-stacked group 111 is turned by 180 ° as a whole or the even-numbered a-stacked group 111 is turned by 180 ° as a whole. Adjacent two a cells 11 in the first loading area 10 are stacked to form an a-stack group 111, and since the a cells 11 are arranged sequentially, the a-stack group 111 formed by the a cells 11 is also arranged sequentially. The entire stack formation process only needs to be completed in the first feeding area 10, respectively, and is very simple. Further, the a-stack groups 111 of the first loading zone 10 are arranged in order, with the positive electrode tabs of the a-stack groups 111 located in front and the negative electrode tabs of the a-stack groups 111 located in the rear. The tab direction of the odd-numbered A stacking group 111 of the first feeding area 10 is rotated clockwise by 90 degrees, the positive and negative tabs of the odd-numbered A stacking group 111 face the feeding direction of the first feeding area 10, the tab direction of the even-numbered A stacking group 111 of the first feeding area 10 is rotated counterclockwise by 90 degrees, the positive and negative tabs of the even-numbered A stacking group 111 of the first feeding area 10 face the opposite feeding direction of the first feeding area 10, and then the odd-numbered A stacking group 111 is turned over by 180 degrees integrally or the even-numbered A stacking group 111 is turned over by 180 degrees integrally, so that pairing is completed. Similarly, the B stacking group 211 of the second feeding area 20 is rotated, and the B stacking group 211 is turned over at intervals, including: the tab direction of the odd-numbered A stacking group 111 of the second feeding area 20 is rotated by 90 degrees clockwise, the tab direction of the even-numbered B stacking group 211 of the first feeding area 10 is rotated by 90 degrees counterclockwise, the positive and negative tabs of the B stacking group 211 are parallel to the feeding direction, the odd-numbered B stacking group 211 is turned by 180 degrees integrally or the even-numbered B stacking group 211 is turned by 180 degrees integrally, the B stacking group 211 and the A stacking group 111 are paired by the same method, and the method is simple and efficient.

Of course, it is understood that in step a3, the a stack group 111 or the B stack group 211 can be rotated and flipped first and then or rotated and flipped simultaneously, which is within the scope of the present embodiment.

In summary, the battery cell pairing method in the embodiment can simply and smoothly complete the pairing process of the four-battery-cell tab, and ensures the pairing efficiency of the four-battery-cell tab.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A cell pairing method is characterized by comprising the following steps:

s2: moving the N A battery cells to enable the first feeding area to form N A stacking groups which are sequentially arranged, wherein each A stacking group comprises two A battery cells, positive electrode ears of the two A battery cells correspond to positive electrode ears of the two A battery cells, and negative electrode ears of the two A battery cells correspond to negative electrode ears of the two A battery cells; moving the N B battery cells to enable the second feeding area to form N B stacking groups which are arranged in sequence, wherein each B stacking group comprises two B battery cells, positive lugs of the two B battery cells correspond to each other, and negative lugs of the two B battery cells correspond to each other;

s3: moving the A stacking group to the second feeding area or moving the B stacking group to the first feeding area, pairwise pairing the A stacking group and the B stacking group to form a pairing group, and rotating the A stacking group and the B stacking group of the pairing group to ensure that a positive lug of the A stacking group of the pairing group is just opposite to a positive lug of the B stacking group, and a negative lug of the A stacking group of the pairing group is just opposite to a negative lug of the B stacking group.

2. The cell pairing method according to claim 1, wherein in step S1, the placing postures of the cells a are the same, the placing postures of the cells B are the same, positive and negative tabs of the cells a and B face perpendicular to the feeding direction, and the positive and negative tabs of the cells a and B are arranged in opposite order.

3. The cell pairing method of claim 2, wherein in step S2, the a cells are stacked adjacent to each other to form an a stack group, and the B cells are stacked adjacent to each other to form a B stack group.

4. The cell pairing method according to claim 3, wherein in step S3, the stack group a is moved into the second feeding area, and the stack group a and the stack group B are arranged in a spaced sequence, two stack groups a and two stack groups B form a pair group, the pair group is distributed in the second feeding area, the stack group a and the stack group B of each pair group are rotated so that the positive tab of the stack group a of the pair group and the positive tab of the stack group B face each other, and the negative tab of the stack group a of the pair group and the negative tab of the stack group B face each other.

5. The cell pairing method according to claim 3, wherein in step S3, the B stack group is moved into the first loading area, and the B stack group and the a stack group are arranged at intervals in sequence, the a stack group and the B stack group form a pair group in pairs, the pair group is distributed in the first loading area, the a stack group and the B stack group of each pair group are rotated, so that the positive tab of the a stack group and the positive tab of the B stack group of the pair group are opposite, and the negative tab of the a stack group and the negative tab of the B stack group of the pair group are opposite.

6. The cell pairing method according to claim 3, wherein: moving the A-stack groups in odd-numbered positions to the second feeding area and the B-stack groups in even-numbered positions to the first feeding area in step S3, or moving the A stacking group in the even number position to the second feeding area and moving the B stacking group in the odd number position to the first feeding area, so that the A stacking group in the odd number position and the B stacking group in the odd number position or the A stacking group in the even number position and the B stacking group in the even number position form a matching group in pairs, the paired groups are distributed in the first feeding area and the second feeding area, the A stacking group and the B stacking group of each paired group are rotated, therefore, the positive electrode lug of the stacking group A and the positive electrode lug of the stacking group B of the matching group are opposite, and the negative electrode lug of the stacking group A and the negative electrode lug of the stacking group B of the matching group are opposite.

7. The cell pairing method according to any one of claims 4 to 6, wherein in step S3, when the a stack group is located at an odd number position, the a stack group is rotated clockwise, the B stack group is rotated counterclockwise, so that the positive and negative tabs of the a stack group and the B stack group are parallel to a feeding direction, and when the a stack group is located at an even number position, the a stack group is rotated counterclockwise, and the B stack group is rotated clockwise, so that the positive and negative tabs of the a stack group and the B stack group are parallel to the feeding direction.

8. A cell pairing method is characterized by comprising the following steps:

a1: forming a first loading area and a second loading area, wherein the first loading area comprises 2N sequentially-arranged A cells, the second loading area comprises 2N sequentially-arranged B cells, and N is an integer greater than 1;

a2: moving the N A battery cells to enable the first feeding area to form N A stacking groups which are sequentially arranged, wherein each A stacking group comprises two A battery cells, positive electrode ears of the two A battery cells correspond to positive electrode ears of the two A battery cells, and negative electrode ears of the two A battery cells correspond to negative electrode ears of the two A battery cells; moving the N B battery cells to enable the second feeding area to form N B stacking groups which are sequentially arranged, wherein each B stacking group comprises two B battery cells, positive electrode ears of the two B battery cells correspond to each other, and negative electrode ears of the two B battery cells correspond to each other;

a3: clockwise rotating the lug direction of the odd-numbered A stacking group of a first feeding area by 90 degrees, anticlockwise rotating the lug direction of the even-numbered A stacking group of the first feeding area by 90 degrees, enabling the positive lug and the negative lug of the A stacking group to be parallel to the feeding direction, integrally turning the odd-numbered A stacking group by 180 degrees or integrally turning the even-numbered A stacking group by 180 degrees, enabling the positive lug of the odd-numbered A stacking group in the first feeding area to be opposite to the positive lug of the even-numbered A stacking group, and enabling the negative lug of the odd-numbered A stacking group in the first feeding area to be opposite to the negative lug of the even-numbered A stacking group; clockwise rotating the lug direction of the odd-numbered B stacking group in the second feeding area by 90 degrees, anticlockwise rotating the lug direction of the even-numbered B stacking group in the second feeding area by 90 degrees, enabling the positive lugs of the B stacking group to be parallel to the feeding direction, integrally turning the odd-numbered B stacking group by 180 degrees or integrally turning the even-numbered B stacking group by 180 degrees, enabling the positive lugs of the odd-numbered B stacking group in the second feeding area to be opposite to the positive lugs of the even-numbered B stacking group, and enabling the negative lugs of the odd-numbered B stacking group in the second feeding area to be opposite to the negative lugs of the even-numbered B stacking group.