CN113823711A - Battery pack production method - Google Patents
Battery pack production method Download PDFInfo
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- CN113823711A CN113823711A CN202110960517.5A CN202110960517A CN113823711A CN 113823711 A CN113823711 A CN 113823711A CN 202110960517 A CN202110960517 A CN 202110960517A CN 113823711 A CN113823711 A CN 113823711A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims description 51
- 238000001179 sorption measurement Methods 0.000 claims description 37
- 239000011521 glass Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 8
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/20—Sequence of activities consisting of a plurality of measurements, corrections, marking or sorting steps
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- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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Abstract
The invention provides a battery pack production method, which comprises the following steps: performing first translation on the battery strings in at least one group of battery strings to increase the distance between two adjacent battery strings in the same group of battery strings, wherein each group of battery strings comprises a plurality of battery strings arranged side by side; carrying out position detection on each battery string after the first translation; and performing second translation and/or horizontal rotation on at least part of the battery strings according to the detection result to enable the space between each battery string to meet the typesetting requirement. According to the technical scheme provided by the invention, the battery strings with the crossing phenomenon and the battery strings with too small intervals can be separated when the positions of the battery strings are regulated, so that the battery strings can be easily identified by the photographing detection device, and the production efficiency of the battery assembly is improved.
Description
Technical Field
The invention relates to the technical field of battery assembly production, in particular to a battery assembly production method.
Background
The production of photovoltaic modules is a process of modularizing a single cell. The method comprises the following main steps: welding the single battery plates into strings by using welding strips, then arranging the welded battery strings in parallel to form a battery string group, and then welding bus bars on the welding strips at the end parts of the battery string group. Before welding the bus bars to the battery string group, the positions of the battery strings in the battery string group need to be regulated, so that the battery strings have certain relative positions.
At present, when the position of each battery string in a battery string set is regulated, first, position information of the battery string is acquired by a photographing detection device, and then, the position of the battery string is regulated or adjusted according to the acquired position information of the battery string.
However, if the inclination angle of the battery strings is large, the adjacent battery strings may cross each other, or the distance between the adjacent battery strings is too small, so that the photographing detection device cannot identify the battery strings which are stacked in a cross manner or are closely adjacent to each other, and it is very troublesome to regularly photograph the battery strings once and again.
Therefore, a new technical solution is needed to solve the problem in the prior art that it is difficult to adjust the positions of the cell strings when the cell strings have a cross-overlapping phenomenon or have too small pitches.
Disclosure of Invention
The invention aims to provide a production method of a battery pack, which aims to solve the problem that in the prior art, the position of a battery string is difficult to regulate when the battery string has a cross overlapping phenomenon or an excessively small interval.
In order to achieve the above object, the present invention provides a battery pack production method including:
performing first translation on the battery strings in at least one group of battery strings to increase the distance between two adjacent battery strings in the same group of battery strings, wherein each group of battery strings comprises a plurality of battery strings arranged side by side;
carrying out position detection on each battery string after the first translation;
and performing second translation and/or horizontal rotation on at least part of the battery strings according to the detection result to enable the space between each battery string to meet the typesetting requirement.
Preferably, the performing, according to the detection result, the second translation and/or horizontal rotation on at least part of the battery strings includes:
judging whether the position of each battery string conforms to the respective target adjustment position or not according to the detection result;
and translating and/or rotating the battery strings which do not conform to the target adjustment position, so that the positions of the battery strings conform to the respective target adjustment positions.
Preferably, the translating and/or rotating the battery string which does not conform to the target adjustment position includes:
acquiring target adjustment positions of battery strings which do not conform to the target adjustment positions, and respectively adjusting the battery strings which do not conform to the target adjustment positions to the respective target adjustment positions;
alternatively, the first and second electrodes may be,
and determining a reference battery string, and respectively adjusting the battery strings which do not conform to the target position to the positions which have preset relative positions with the reference battery string according to the position of the reference battery string.
Preferably, the determining a reference battery string, and adjusting a battery string that does not conform to the target position to a position having a predetermined relative position to the reference battery string according to the position of the reference battery string, includes:
for any group of battery strings, determining one battery string as a reference battery string;
if the reference battery string is the battery string at the edge of the battery string in the group, the reference battery string is far away from the reference battery string, and the rest battery strings in the same battery string are subjected to secondary translation and/or horizontal rotation;
if the reference battery string is a non-edge battery string in the group battery string, the rest of the battery strings arranged in the same group battery string along the first direction are subjected to secondary translation and/or horizontal rotation along the first direction, and the rest of the battery strings arranged in the same group battery string along the second direction are subjected to secondary translation and/or horizontal rotation along the second direction.
Preferably, for any group of battery strings, determining one of the battery strings as a reference battery string includes:
for any group of battery strings, determining one battery string with the current position conforming to the target adjustment position as the reference battery string; alternatively, the first and second electrodes may be,
for any group of battery strings, the position of one battery string is adjusted to meet the target adjustment position, and the adjusted battery string is determined as the reference battery string.
Preferably, each of the at least one group of battery strings is respectively adsorbed on one adsorption part of the battery string carrying device;
the first translation of a battery string of the at least one group of battery strings comprises:
the adsorption parts are translated for the first time, so that the distance between two adjacent adsorption parts in the same group of adsorption parts is increased;
the second translation and/or horizontal rotation of at least part of the battery string comprises:
and carrying out second translation and/or horizontal rotation on at least part of the adsorption part.
Preferably, before the first translation of the adsorption member, the battery assembly production method further includes:
arranging a plurality of cell strings on a glass plate to form at least one group of cell strings;
the battery string is sucked from the glass plate one by the plurality of suction members of the battery string conveyance device.
Preferably, the battery module production method further includes:
arranging a bus bar on a bus bar bearing table of the welding bearing device;
after the second translation and/or horizontal rotation of at least a part of the adsorption member, the battery assembly production method further includes:
controlling the battery string carrying device to release the adsorbed battery strings on a battery string bearing table of the welding bearing device, wherein the released welding strips at the end parts of the battery strings are stacked on the bus bars arranged on the bus bar bearing table;
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
Preferably, each battery string in the at least one group of battery strings is respectively positioned on a battery string bearing table of the welding bearing device;
the first translation of a battery string of the at least one group of battery strings comprises:
carrying out first translation on the battery string bearing tables to increase the distance between two adjacent battery string bearing tables in the same group of battery string bearing tables;
the second translation and/or horizontal rotation of at least part of the battery string comprises:
and carrying out secondary translation and/or horizontal rotation on at least part of the battery string bearing table.
Preferably, the battery module production method further includes:
arranging bus bars on a bus bar bearing table of a welding bearing device in advance, wherein welding strips at the end parts of the battery strings on the battery string bearing table are stacked on the bus bars arranged on the bus bar bearing table;
after the second translation and/or horizontal rotation of at least a part of the battery string, the battery assembly production method further includes:
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
According to the technical scheme provided by the invention, the battery strings with the cross phenomenon and the battery strings with too small intervals can be separated when the positions of the battery strings are regulated, so that the battery strings can be easily identified by the photographing detection device, the problem that the photographing detection device in the prior art needs to photograph and regulate once and again because the battery strings cannot be identified can be solved, and the production efficiency of the battery assembly can be improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic flow chart of a method for producing a battery pack according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an arrangement of two sets of cell strings according to an embodiment of the present invention;
fig. 3 shows a change in position between two adjacent battery strings after the first translation in the case where two adjacent battery strings intersect at a point a in fig. 2 with an inclination angle;
fig. 4 shows the position change between two adjacent battery strings after the first translation in the case where the distance between two adjacent battery strings at a in fig. 2 is excessively small;
fig. 5 is a schematic structural diagram of a weld carrier according to an embodiment of the present invention.
Description of reference numerals:
1-a battery string; 100-welding a carrier; 101-a battery string carrier; 102-first translation mechanism.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting. The term "inside" and "outside" refer to the inside and the outside of the contour of each member itself.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The present invention provides a battery module production method, as shown in fig. 1, including:
performing first translation on the battery strings in at least one group of battery strings to increase the distance between two adjacent battery strings in the same group of battery strings, wherein each group of battery strings comprises a plurality of battery strings arranged side by side
Performing position detection on each battery string after the first translation, wherein the position detection can specifically acquire an image of each battery string through a camera, so as to acquire position information of each battery string;
and performing second translation and/or horizontal rotation on at least part of the battery strings according to the detection result to enable the space between the battery strings to meet the typesetting requirement, wherein the meeting of the typesetting requirement refers to the requirement that the space between the battery strings which are arranged side by side needs to meet when the battery strings are subjected to the next procedure.
In the technical scheme provided by the invention, when the positions of the battery strings are regulated, firstly, the battery strings in at least one group of battery strings are translated for the first time, so that the distance between two adjacent battery strings in the same group of battery strings is increased, for example, two groups of battery strings 1 are shown in fig. 2, and an enlarged part at a position in fig. 1 is shown in fig. 3 and 4, wherein fig. 3 shows the position change between the two battery strings 1 after the two adjacent battery strings are translated for the first time under the condition that the two adjacent battery strings are crossed by having an inclined angle, and fig. 4 shows the position change between the two battery strings 1 after the two adjacent battery strings are translated for the first time under the condition that the distance between the two adjacent battery strings is too small.
Therefore, through the technical scheme provided by the invention, the battery strings with the cross phenomenon and the battery strings with too small intervals can be separated when the positions of the battery strings are regulated, so that the battery strings can be easily identified by the photographing detection device, the problem that the photographing detection device in the prior art needs to photograph and regulate once and again because the battery strings cannot be identified can be solved, and the production efficiency of the battery assembly can be improved.
According to the technical scheme provided by the invention, the second translation and/or horizontal rotation of at least part of the battery strings according to the detection result comprises the following steps:
judging whether the position of each battery string conforms to the respective target adjustment position or not according to the detection result; and translating and/or rotating the battery strings which do not conform to the target adjustment position, so that the positions of the battery strings conform to the respective target adjustment positions.
Wherein the translating and/or rotating the battery string that does not conform to the target adjustment position may include:
and acquiring target adjustment positions of the battery strings which do not accord with the target adjustment positions, and respectively adjusting the battery strings which do not accord with the target adjustment positions to the respective target adjustment positions. That is, the battery strings that do not conform to the target adjustment position are adjusted to their respective predetermined positions independently of each other, depending on the position to which each battery string is to be adjusted.
The translating and/or rotating the battery string that does not conform to the target adjustment position may also include:
and determining a reference battery string, and respectively adjusting the battery strings which do not conform to the target position to the positions which have preset relative positions with the reference battery string according to the position of the reference battery string.
Wherein the determining a reference battery string, and adjusting a battery string that does not conform to a target position to a position having a predetermined relative position with the reference battery string according to the position of the reference battery string, includes:
for any group of battery strings, determining one battery string as a reference battery string;
if the reference battery string is a battery string at the edge of the battery string in the same group, the reference battery string is far away from the direction of the reference battery string, and the rest of the battery strings in the same group of battery strings are subjected to second translation and/or horizontal rotation, so that the rest of the battery strings in the same group of battery strings and the reference battery string have preset relative positions;
if the reference battery string is a non-edge battery string in the group battery string, sequentially carrying out second translation and/or horizontal rotation on the rest of the battery strings arranged in the same group battery string along the first direction along a first direction far away from the reference battery string, and sequentially carrying out second translation and/or horizontal rotation on the rest of the battery strings arranged in the same group battery string along the second direction along a second direction far away from the reference battery string, so that the rest of the battery strings except the reference battery string in the same group battery string and the reference battery string have preset relative positions.
Wherein, for any group of battery strings, determining one of the battery strings as a reference battery string comprises:
for any group of battery strings, determining one battery string with the current position conforming to the target adjustment position as the reference battery string; alternatively, the first and second electrodes may be,
for any group of battery strings, the position of one battery string is adjusted to meet the target adjustment position, and the adjusted battery string is determined as the reference battery string.
The technical solution provided by the present invention is described in detail below according to specific embodiments.
The first embodiment:
in the first embodiment, each of the at least one set of battery strings is attracted to one attraction member of the battery string conveying device;
the first translation of a battery string of the at least one group of battery strings comprises:
the adsorption parts are translated for the first time, so that the distance between two adjacent adsorption parts in the same group of adsorption parts is increased;
the second translation and/or horizontal rotation of at least part of the battery string comprises:
and carrying out second translation and/or horizontal rotation on at least part of the adsorption part.
That is to say, each battery string in the at least one group of battery strings is respectively adsorbed on one adsorption component, and the position regulation of the battery strings is realized by regulating the position of the adsorption component.
In this embodiment, before the first translation of the adsorption member, the method for producing a battery pack further includes:
arranging a plurality of cell strings on a glass plate to form at least one group of cell strings;
the battery string is sucked from the glass plate one by the plurality of suction members of the battery string conveyance device.
In this embodiment, the method for producing a battery pack further includes:
arranging a bus bar on a bus bar bearing table of the welding bearing device;
after the second translation and/or horizontal rotation of at least a part of the adsorption member, the battery assembly production method further includes:
controlling the battery string carrying device to release the adsorbed battery strings on a battery string bearing table of the welding bearing device, wherein the released welding strips at the end parts of the battery strings are stacked on the bus bars arranged on the bus bar bearing table;
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
A specific process for producing a battery assembly using the method for producing a battery assembly provided by the first embodiment will be described in detail below.
Arranging a plurality of battery strings on a glass plate to form two groups of battery strings; wherein each group of battery strings comprises a plurality of battery strings arranged approximately in parallel, and two adjacent groups of battery strings are arranged along the length direction of the battery strings, as shown in fig. 1;
sucking the battery string from the glass plate one by using a plurality of sucking parts of the battery string conveying device;
the adsorption parts are translated for the first time, so that the distance between two adjacent adsorption parts in the same group of adsorption parts is increased; specifically, the distance between two adjacent adsorption parts may be increased by using the adsorption part at the middle position in the group of adsorption parts as a reference and sequentially translating the rest of the adsorption parts in the group of adsorption parts in the direction away from the middle position, or by using the adsorption part at the outermost edge in the group of adsorption parts as a reference and sequentially translating the rest of the adsorption parts in the direction away from the adsorption part as a reference;
detecting, by a camera, a position of the battery string adsorbed by each of the adsorption members;
judging whether the position of each battery string conforms to the respective target adjustment position or not according to the detected position information of the battery strings;
and (3) performing second translation and/or horizontal rotation on the battery strings which do not conform to the target adjustment position (specifically, performing translation and/or rotation on the adsorption part where the battery strings are located), so that the positions of the battery strings conform to the respective target adjustment positions. Specifically, the target adjustment position of the battery string which does not conform to the target adjustment position is obtained, then the adsorption part where the battery string which does not conform to the target adjustment position is located is translated and/or rotated, and the battery strings which do not conform to the target adjustment position reach the respective target adjustment positions by adjusting the position of the adsorption part.
Arranging a bus bar on a bus bar bearing table of the welding bearing device;
controlling the battery string carrying device to release the adsorbed battery strings on a battery string bearing table of the welding bearing device, wherein the released welding strips at the end parts of the battery strings are stacked on the bus bars arranged on the bus bar bearing table;
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
Second embodiment
In the second embodiment, each battery string in the at least one battery string set is respectively located on one battery string bearing platform of the welding bearing device;
the first translation of a battery string of the at least one group of battery strings comprises:
carrying out first translation on the battery string bearing tables to increase the distance between two adjacent battery string bearing tables in the same group of battery string bearing tables;
the second translation and/or horizontal rotation of at least part of the battery string comprises:
and carrying out secondary translation and/or horizontal rotation on at least part of the battery string bearing table.
The battery module production method further includes:
arranging bus bars on a bus bar bearing table of a welding bearing device in advance, wherein welding strips at the end parts of the battery strings on the battery string bearing table are stacked on the bus bars arranged on the bus bar bearing table;
after the second translation and/or horizontal rotation of at least a part of the battery string, the battery assembly production method further includes:
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
A specific process for producing a battery assembly using the battery assembly production method provided by the second embodiment will be described in detail below.
Placing two sets of battery strings on a battery string carrying platform 101 of a welding carrying device 100 by using a battery string carrying device, as shown in fig. 5, the welding carrying device 100 has two sets of battery string carrying platforms 101, wherein each battery string is placed on one battery string carrying platform 101 one by one;
performing first translation on the battery string bearing tables 101 to increase the distance between two adjacent battery string bearing tables 101 in the same group of battery string bearing tables 101;
fig. 5 shows that each battery string supporting platform 101 is correspondingly provided with a first translation mechanism 102, and each first translation mechanism 102 can translate the battery string supporting platform 101 along the width direction of the battery string to increase the distance between two adjacent battery strings.
Detecting the position of the battery string on each battery string bearing platform 101 through a camera;
judging whether the position of each battery string conforms to the respective target adjustment position or not according to the detected position information of the battery strings;
and performing second translation and/or horizontal rotation on the battery strings which do not conform to the target adjustment position, so that the positions of the battery strings conform to the respective target adjustment positions. The adjustment (translation or rotation) of the battery string described in the present embodiment refers to the adjustment of the battery string support table 101 on which the battery string is located.
Specifically, for the first group of battery strings, one of the battery strings whose current position corresponds to the target adjustment position is determined as the reference battery string, and of course, one of the battery strings whose current position does not correspond to the target adjustment position may also be adjusted (by adjusting the battery string carrying table 101 on which the battery string is located) so that the position of the battery string corresponds to the target adjustment position, and the adjusted battery string is determined as the reference battery string;
if the reference battery string is positioned at the battery string at the edge of the battery string in which the reference battery string is positioned, the reference battery string is far away from the direction of the reference battery string, and the rest battery strings in the same battery string are subjected to secondary translation and/or horizontal rotation;
if the reference battery string is a non-edge battery string in the group battery string, the rest of the battery strings arranged in the same group battery string along the first direction are subjected to secondary translation and/or horizontal rotation along the first direction, and the rest of the battery strings arranged in the same group battery string along the second direction are subjected to secondary translation and/or horizontal rotation along the second direction. In order to realize the second translation and/or horizontal rotation of the battery string, a second translation mechanism and a rotation mechanism may be specifically used between the battery string supporting platform 101 and the first translation mechanism 102 to realize the second translation and rotation of the battery string supporting platform 101.
For the second group of battery strings, one of the battery strings is determined as a reference battery string, similar to the first group of battery strings, and then the remaining battery strings in the second group of battery strings are adjusted to the target adjustment position according to the reference battery string.
It will be understood by those skilled in the art that the second translation and/or rotation of the battery strings may also be performed by obtaining the target adjustment positions of the battery strings that do not conform to the target adjustment positions, and then adjusting the battery strings that do not conform to the target adjustment positions to the respective target adjustment positions. Of course, the first embodiment may also adopt a mode provided in the second embodiment in which the reference battery string is first determined, and then the battery strings that do not conform to the target position are respectively adjusted to positions having predetermined relative positions to the reference battery string, based on the position of the reference battery string.
After the second translation and/or horizontal rotation of at least a portion of the battery string on the battery string support 101, the solder ribbons at the ends of the battery string on the battery string support 101 are soldered to the underlying stacked bus bars. The bus bar is supported on a bus bar support table (not shown) of the welding support device 100, and after the bus bar is placed on the bus bar support table in advance during specific operation, each battery string is placed on the battery string support table 101, so that the solder strip at the end of the battery string is located above the bus bar.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A battery pack production method, characterized by comprising:
performing first translation on the battery strings in at least one group of battery strings to increase the distance between two adjacent battery strings in the same group of battery strings, wherein each group of battery strings comprises a plurality of battery strings arranged side by side;
carrying out position detection on each battery string after the first translation;
and performing second translation and/or horizontal rotation on at least part of the battery strings according to the detection result to enable the space between each battery string to meet the typesetting requirement.
2. The battery pack production method according to claim 1, wherein performing the second translation and/or horizontal rotation on at least a part of the battery strings according to the detection result includes:
judging whether the position of each battery string conforms to the respective target adjustment position or not according to the detection result;
and translating and/or rotating the battery strings which do not conform to the target adjustment position, so that the positions of the battery strings conform to the respective target adjustment positions.
3. The battery pack production method according to claim 2, wherein the translating and/or rotating the string of batteries that do not conform to the target adjustment position includes:
acquiring target adjustment positions of battery strings which do not conform to the target adjustment positions, and respectively adjusting the battery strings which do not conform to the target adjustment positions to the respective target adjustment positions;
alternatively, the first and second electrodes may be,
and determining a reference battery string, and respectively adjusting the battery strings which do not conform to the target position to the positions which have preset relative positions with the reference battery string according to the position of the reference battery string.
4. The battery pack production method according to claim 3, wherein the determining of the reference battery string, the adjusting of the battery string that does not conform to the target position to a position having a predetermined relative position to the reference battery string based on the position of the reference battery string, comprises:
for any group of battery strings, determining one battery string as a reference battery string;
if the reference battery string is the battery string at the edge of the battery string in the group, the reference battery string is far away from the reference battery string, and the rest battery strings in the same battery string are subjected to secondary translation and/or horizontal rotation;
if the reference battery string is a non-edge battery string in the group battery string, the rest of the battery strings arranged in the same group battery string along the first direction are subjected to secondary translation and/or horizontal rotation along the first direction, and the rest of the battery strings arranged in the same group battery string along the second direction are subjected to secondary translation and/or horizontal rotation along the second direction.
5. The battery pack production method according to claim 4, wherein the determining, for any one set of the battery strings, one of the battery strings as a reference battery string includes:
for any group of battery strings, determining one battery string with the current position conforming to the target adjustment position as the reference battery string; alternatively, the first and second electrodes may be,
for any group of battery strings, the position of one battery string is adjusted to meet the target adjustment position, and the adjusted battery string is determined as the reference battery string.
6. The battery pack production method according to any one of claims 1 to 5, wherein each of the at least one set of battery strings is respectively adsorbed on one adsorption member of a battery string handling device;
the first translation of a battery string of the at least one group of battery strings comprises:
the adsorption parts are translated for the first time, so that the distance between two adjacent adsorption parts in the same group of adsorption parts is increased;
the second translation and/or horizontal rotation of at least part of the battery string comprises:
and carrying out second translation and/or horizontal rotation on at least part of the adsorption part.
7. The battery module production method according to claim 6, further comprising, before the first translation of the suction member:
arranging a plurality of cell strings on a glass plate to form at least one group of cell strings;
the battery string is sucked from the glass plate one by the plurality of suction members of the battery string conveyance device.
8. The battery module production method according to claim 6, further comprising:
arranging a bus bar on a bus bar bearing table of the welding bearing device;
after the second translation and/or horizontal rotation of at least a part of the adsorption member, the battery assembly production method further includes:
controlling the battery string carrying device to release the adsorbed battery strings on a battery string bearing table of the welding bearing device, wherein the released welding strips at the end parts of the battery strings are stacked on the bus bars arranged on the bus bar bearing table;
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
9. The battery module production method according to any one of claims 1 to 5, wherein each of the at least one battery string is located on one battery string support table of the welding support device;
the first translation of a battery string of the at least one group of battery strings comprises:
carrying out first translation on the battery string bearing tables to increase the distance between two adjacent battery string bearing tables in the same group of battery string bearing tables;
the second translation and/or horizontal rotation of at least part of the battery string comprises:
and carrying out secondary translation and/or horizontal rotation on at least part of the battery string bearing table.
10. The battery module production method according to claim 9, further comprising:
arranging bus bars on a bus bar bearing table of a welding bearing device in advance, wherein welding strips at the end parts of the battery strings on the battery string bearing table are stacked on the bus bars arranged on the bus bar bearing table;
after the second translation and/or horizontal rotation of at least a part of the battery string, the battery assembly production method further includes:
and welding the welding strips at the ends of the battery strings and the bus bars stacked below the welding strips.
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