CN112670549B - Battery manufacturing method, battery and electronic equipment - Google Patents
Battery manufacturing method, battery and electronic equipment Download PDFInfo
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- CN112670549B CN112670549B CN202011449070.7A CN202011449070A CN112670549B CN 112670549 B CN112670549 B CN 112670549B CN 202011449070 A CN202011449070 A CN 202011449070A CN 112670549 B CN112670549 B CN 112670549B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 238000004804 winding Methods 0.000 claims abstract description 91
- 238000004806 packaging method and process Methods 0.000 claims abstract description 17
- 238000004080 punching Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a battery manufacturing method, a battery and electronic equipment, and belongs to the field of batteries. The battery manufacturing method comprises the steps of calculating a first positioning parameter of a missing area of each battery; correcting the first positioning parameter to obtain a second positioning parameter; manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the second positioning parameters; winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core; and (5) punching and packaging the winding core to obtain each battery. The battery manufacturing method can reasonably manufacture the special-shaped battery, reduce pollution to the battery and improve the use safety of the battery.
Description
Technical Field
The present invention relates to the field of batteries, and in particular, to a battery manufacturing method, a battery, and an electronic device.
Background
At present, when a special-shaped battery is manufactured in a winding mode, positive and negative pole pieces are often wound by a diaphragm to form a winding core, and irregular positions of the winding core are trimmed and cut to form the special-shaped battery, and the mode often influences dust degree between the positive and negative pole pieces, so that pollution is caused to the battery, and the use safety of the battery is influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a battery manufacturing method, which can reasonably manufacture the special-shaped battery, reduce pollution to the battery and improve the use safety of the battery.
The invention also provides a battery manufactured by the battery manufacturing method.
The invention also provides electronic equipment with the battery.
A battery manufacturing method according to an embodiment of the first aspect of the present invention includes:
calculating a first positioning parameter of a missing region of each battery;
correcting the first positioning parameter to obtain a second positioning parameter;
manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the second positioning parameters;
winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core;
and (5) punching and packaging the winding cores to obtain each battery.
The battery manufacturing method according to the embodiment of the invention has at least the following beneficial effects: according to the battery manufacturing method, the first positioning parameters of the missing areas of the battery are calculated, the first positioning parameters are modified to obtain the second positioning parameters, and the positive and negative pole pieces and the diaphragm of the battery are manufactured according to the second positioning parameters, so that the positive and negative pole pieces are wound to form a winding core by the diaphragm, the winding core is subjected to shell punching packaging to obtain the battery, the positive and negative pole pieces and the diaphragm of the battery can be accurately positioned, the positive and negative pole pieces are wound to form the winding core by the diaphragm conveniently, the special-shaped battery is manufactured conveniently, pollution to the battery can be reduced, and the use safety of the battery is improved.
According to some embodiments of the invention, the calculating the first positioning parameter of the missing region of each cell includes:
acquiring a battery parameter set of a missing area of each battery;
dividing the winding core of each battery into a first area and a second area;
obtaining a calculation model for calculating the first positioning parameters according to the battery parameter set, the first area and the second area;
and obtaining the first positioning parameters according to the battery parameter set and the calculation model.
According to some embodiments of the invention, the correcting the first positioning parameter to obtain a second positioning parameter includes:
manufacturing a sample positive plate, a sample negative plate and a sample diaphragm of each battery according to the first positioning parameters;
winding the sample positive plate, the sample negative plate and the sample diaphragm to form a sample winding core;
calculating a first error value and a second error value of a missing region of the sample winding core;
and correcting the first positioning parameter according to the first error value and the second error value to obtain the second positioning parameter.
According to some embodiments of the invention, the manufacturing of the positive electrode sheet, the negative electrode sheet and the separator of each of the batteries according to the second positioning parameter includes:
obtaining the size of the positive plate, the size of the negative plate and the size of the diaphragm of each battery according to the second positioning parameters;
and manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the size of the positive plate, the size of the negative plate and the size of the diaphragm.
According to some embodiments of the invention, the negative electrode sheet size of each of the cells is larger than the positive electrode sheet size, and the separator size is larger than the negative electrode sheet size.
According to some embodiments of the invention, the winding the positive electrode sheet, the negative electrode sheet and the separator of each of the batteries to form a winding core includes:
unreeling the diaphragm according to the second positioning parameters;
and winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core.
According to some embodiments of the invention, the punching and packaging the winding core to obtain each battery includes:
punching corresponding shells according to the shape of the winding core;
and packaging the shell and the winding core to obtain each battery.
According to some embodiments of the invention, after the core is subjected to shell-punching encapsulation, the method includes:
and carrying out aging treatment on each battery to obtain a final battery.
According to the battery of the second aspect of the embodiment of the present invention, the battery is manufactured by the above-described battery manufacturing method.
The battery provided by the embodiment of the invention has at least the following beneficial effects: the battery is manufactured by adopting the battery manufacturing method, the first positioning parameters of the missing area of the battery are calculated, the first positioning parameters are modified to obtain the second positioning parameters, the positive and negative pole pieces and the diaphragm of the battery are manufactured according to the second positioning parameters, so that the positive and negative pole pieces are wound by the diaphragm to form a winding core, the winding core is subjected to shell punching packaging to obtain the battery, the positive and negative pole pieces and the diaphragm of the battery can be accurately positioned, the positive and negative pole pieces are wound by the diaphragm to form the winding core conveniently, the pollution to the battery can be reduced, and the use safety of the battery is improved.
According to an embodiment of the third aspect of the present invention, an electronic device has the above battery.
The electronic equipment provided by the embodiment of the invention has at least the following beneficial effects: the electronic equipment adopts the battery, calculates the first positioning parameters of the missing area of the battery when the battery is manufactured, modifies the first positioning parameters to obtain the second positioning parameters, and manufactures the positive and negative pole pieces and the diaphragm of the battery according to the second positioning parameters, so that the positive and negative pole pieces are wound by the diaphragm to form a winding core, and the winding core is subjected to shell punching packaging to obtain the battery, so that the positive and negative pole pieces and the diaphragm of the battery can be accurately positioned, the positive and negative pole pieces are wound by the diaphragm to form the winding core conveniently, the pollution to the battery can be reduced, and the use safety of the battery is improved, thereby improving the working stability of the electronic equipment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a flowchart of a battery manufacturing method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of manufacturing a battery according to another embodiment of the invention;
FIG. 3 is a flowchart of a method of manufacturing a battery according to another embodiment of the present invention;
FIG. 4 is a flowchart of a method of manufacturing a battery according to another embodiment of the present invention;
FIG. 5 is a flowchart of a method of manufacturing a battery according to another embodiment of the present invention;
fig. 6 is a flowchart of a battery manufacturing method according to another embodiment of the present invention;
fig. 7 is a schematic view of a battery according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of the battery of fig. 7 at B-B.
Reference numerals: 110. a winding core; 120. a positive plate; 130. a negative electrode sheet; 210. a positive electrode tab; 220. a negative electrode ear; 230. a diaphragm; 240. a first deleted region; 250. a second deleted region; 260. a third deleted region; 270. and a fourth deleted region.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed 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 explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In a first aspect, referring to fig. 1, a method for manufacturing a battery according to an embodiment of the present invention includes:
s100, calculating a first positioning parameter of a missing area of each battery;
s200, correcting the first positioning parameters to obtain second positioning parameters;
s300, manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the second positioning parameters;
s400, winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core;
s500, punching and packaging the winding cores to obtain each battery.
In the manufacturing process of the batteries, first positioning parameters of the missing areas of each battery are calculated firstly, wherein the missing areas can be in a regular shape or an irregular shape; the first positioning parameter of each battery is obtained by theoretical calculation according to the parameter of each battery, and certain error exists in the first positioning parameter, so after the first positioning parameter of the missing area of each battery is obtained by calculation, the first positioning parameter is corrected to obtain the second positioning parameter, it can be understood that the second positioning parameter is the positioning parameter of the incomplete area after the error is eliminated, the first positioning parameter and the second positioning parameter of each battery comprise the size of a positive plate, the size of a negative plate and the size of a diaphragm, therefore, according to the second positioning parameter, the positive plate, the negative plate and the diaphragm meeting the size requirement of each battery can be manufactured, in each battery, the positive plate and the negative plate are wound into a winding core by the diaphragm, the winding core is the battery core of the battery, the winding core and the housing are packaged according to the shape of the winding core, and the housing with corresponding size can be manufactured. Therefore, the positive and negative pole pieces and the diaphragm of the battery can be accurately positioned, and the sizes of the positive and negative pole pieces and the diaphragm of each battery are calculated in advance, so that the positive and negative pole pieces and the diaphragm with corresponding sizes are manufactured, the positive and negative pole pieces are conveniently wound by the diaphragm to form a winding core, the pollution to the battery can be reduced, and the use safety of the battery is improved.
Referring to fig. 2, in some embodiments, step S100 includes:
s110, acquiring a battery parameter set of a missing area of each battery;
s120, dividing the winding core of each battery into a first area and a second area;
s130, obtaining a calculation model for calculating first positioning parameters according to the battery parameter set, the first area and the second area;
and S140, obtaining a first positioning parameter according to the battery parameter set and the calculation model.
Because the calculation of the first positioning parameters of the missing regions of each battery is based on the shape of the missing regions and the characteristics of the runway structure formed by winding the batteries, in the process of calculating the first positioning parameters, firstly acquiring a battery parameter set of the missing regions of each battery, wherein the battery parameter set comprises the thickness, the width, the side distance of the positive electrode lug and the negative electrode lug of the batterySide margin, positive plate thickness, negative plate thickness, separator thickness, shape of missing region, etc.; according to the shape of the missing area and the runway structure characteristic of the battery winding core, the winding core of each battery can be divided into a first area and a second area, the first area is a flat area, the second area is an arc area, the width of the flat area is the width of a winding needle, the arc areas on two sides can be simplified into standard semi-circles, the diameter and the perimeter of the semi-circle can be increased along with the increase of the winding layer number, the diameters of the semi-circles on the left side and the right side can be increased each time according to the structural characteristic of the winding core by a rule of increasing the thickness of one layer group, wherein the thickness T of the layer group cz The method comprises the following steps: t (T) cz ＝T Positive electrode +T Negative electrode +2*T Diaphragm Wherein T is Positive electrode Is the thickness of the positive plate, T Negative electrode Is the thickness of the negative plate, T Diaphragm Is the thickness of the diaphragm. According to the battery parameter set, the first area and the second area, a calculation model for calculating the first positioning parameters can be obtained, according to the battery parameter set and the calculation model, the first positioning parameters of each missing area of the positive and negative electrode plates and the diaphragm can be conveniently calculated, so that the positive and negative electrode plates of the battery and the missing areas of the diaphragm can be accurately positioned, the positive and negative electrode plates and the diaphragm with corresponding sizes are manufactured, the positive and negative electrode plates are conveniently wound by the diaphragm to form a winding core, pollution to the battery can be reduced, and the use safety of the battery is improved.
Referring to fig. 7 and 8, in some embodiments, the battery includes a winding core 110, a positive electrode tab 120, a negative electrode tab 130, and a separator 230, wherein the positive electrode tab 120 has a positive electrode tab 210, and the negative electrode tab 130 has a negative electrode tab 220, and for convenience of explanation, a battery having a regular circular defect on the battery body is exemplified herein (the actual defect area may be in a regular shape or an irregular shape on the battery body or side, the defect area). In the process of calculating the first positioning parameter of the circular missing region of the battery, firstly, a battery parameter set of the missing region is obtained, wherein the battery parameter set comprises the thickness T of the positive plate Positive electrode Thickness T of negative electrode sheet Negative electrode And diaphragm thickness T Diaphragm Due to the batteryThe winding core structure of the battery can be regarded as a runway structure, so that the battery can be divided into a straight area and an arc area, and the width of the straight area is the width W of the winding needle 0 The circular arc areas on the two sides can be simplified into standard semi-circles, it can be understood that the diameters and the circumferences of the semi-circles can be increased along with the increase of the number of layers of winding, and the diameters of the semi-circles on the left side and the right side can be increased each time according to the structural characteristics of the winding core by the rule of increasing the thickness of one layer group, wherein the thickness T of the layer group cz The method comprises the following steps: t (T) cz ＝T Positive electrode +T Negative electrode +2*T Diaphragm Wherein T is Positive electrode Is the thickness of the positive plate, T Negative electrode Is the thickness of the negative plate, T Diaphragm Is the thickness of the diaphragm. The battery parameter set of the battery also comprises the thickness T of the battery 1 Width W 1 Side distance F of positive tab 1 Side margin B of missing region 1 The second side margin of the positive tab is F 2 ＝F 1 -a; the second side margin of the missing region is B 2 ＝B 1 -a; wherein, a is the size parameter of the battery outer packaging film, and by deducting the thickness of the battery outer packaging film, the calculation error can be reduced, and the calculation accuracy of the first positioning parameter can be improved. It should be noted that, according to the process capability of the battery and the thickness of the aluminum plastic film, the value range of a is between 0.4 and 0.7, so that the calculation error can be further reduced, and the calculation accuracy of the first positioning parameter is improved. Core thickness T according to battery parameter set JR The method comprises the following steps: t (T) JR ＝(T 1 -d 1 ) Beta, wherein T 1 D is the thickness of the battery 1 The thickness of the aluminum plastic film is the thickness change coefficient of the coiled core after the coiling is expanded in a charged way, the value range of the beta is between 1.05 and 1.10, thus the calculation accuracy of the first positioning parameter can be improved, and the third side margin of the positive electrode lug is F 3 ＝F 2 -0.5*T JR The method comprises the steps of carrying out a first treatment on the surface of the The third side margin of the missing region is B 3 ＝B 2 -0.5*T JR Width W of winding core JR The method comprises the following steps: w (W) JR ＝W 1 -2*a; width W of winding needle 0 The method comprises the following steps: w (W) 0 ＝W JR -T JR - θ, where θ is a correction parameter, and the value of θ ranges from 1.0 to 2.5; semicircle diameter D corresponding to 2 nd arc when positive plate is wound 0 The method comprises the following steps: d (D) 0 ＝8*T Diaphragm +d 2 +2*d 3 +d 4 +3*d 5 +d 6 +T 0 Wherein d 2 Thickness of negative electrode ear d 3 Is the thickness of gummed paper, d 4 Is the thickness of aluminum foil d 5 For the thickness of copper foil d 6 Is the thickness of the negative electrode double-sided material, T 0 For the thickness of the winding needle, for the convenience of calculation, the thickness T of the winding needle 0 1mm was taken. According to the series of parameters, the positive electrode tab of the battery is taken as a positioning reference point, and the first positioning parameters of the first reference missing region 240, the second missing region 250, the third missing region 260 and the fourth missing region 270 can be calculated, wherein the first missing region 240, the second missing region 250, the third missing region 260 and the fourth missing region 270 respectively correspond to the first layer, the second layer, the third layer and the fourth layer of the missing region, and the first positioning parameters comprise the distance L between the missing regions and the reference point, which is specifically calculated as follows:
distance L between the first missing region 240 and the reference point 1 Is L 1 ＝F 3 +B 3 ；
Distance L between the second missing region 250 and the reference point 2 Is L 2 ＝F 3 +2*W 0 +π*(D 0 +0.5*T Positive electrode )-B 3 ；
Distance L between third missing region 260 and reference point 3 Is L 3 ＝F 3 +B 3 +2*W 0 +π*(2*(D 0 +0.5*T Positive electrode )+T cz )；
Distance L between fourth missing region 270 and reference point 4 Is L 4 ＝F 3 +4*W 0 +π*(3*(D 0 +0.5*T Positive electrode )+3*T cz )-B 3
According to the above situation, it can be obtained that a certain rule exists in the positioning distance between the missing region and the reference point, namely
If the missing area of the battery is an even number layer, the distance between the missing area and the reference positioning point is as follows:
Ln＝F 3 -B 3 +n*W 0 +π*((n-1)*(D 0 +0.5*T positive electrode )+(n-2)*(n-1)/2*T cz )；
If the missing area of the battery is an odd number layer, the distance between the missing area and the reference positioning point is as follows:
Ln＝F 3 +B 3 +(n-1)*W 0 +π*((n-1)*(D 0 +0.5*T positive electrode )+(n-2)*(n-1)/2*T cz )；
Wherein T is cz Is the thickness of the layer group, T Positive electrode Is the thickness of the positive plate, W 0 For the width of the winding needle D 0 Is the semicircle diameter corresponding to the 2 nd arc when the positive plate is wound, F 3 Is the third side margin of the positive tab, B 3 The third side margin of the missing region.
By the method, the distance between the missing areas of the negative electrode plate and the diaphragm and the reference point can be calculated conveniently, so that the positive electrode plate, the negative electrode plate and the diaphragm missing areas of the batteries can be positioned accurately, the positive electrode plate, the negative electrode plate and the diaphragm of each battery are calculated in advance, the positive electrode plate, the negative electrode plate and the diaphragm with the corresponding sizes are manufactured, the positive electrode plate, the negative electrode plate and the diaphragm are wound to form the winding core conveniently by the diaphragm, the winding core is not required to be trimmed for multiple times, the pollution to the batteries can be reduced, and the use safety of the batteries is improved.
Referring to fig. 3, in some embodiments, step S200 includes:
s210, manufacturing a sample positive plate, a sample negative plate and a sample diaphragm of each battery according to the first positioning parameters;
s220, winding the sample positive plate, the sample negative plate and the sample diaphragm to form a sample winding core;
s230, calculating a first error value and a second error value of a missing area of the sample winding core;
s240, correcting the first positioning parameter according to the first error value and the second error value to obtain a second positioning parameter.
Since the first positioning parameter of each battery is theoretically calculated according to the parameter of each battery, a certain error exists in the first positioning parameter, and therefore, after the first positioning parameter of the missing area of each battery is calculated, the first positioning parameter is corrected so as to improve the accuracy of calculating the battery size. In the process of correcting the first positioning parameters, firstly, according to the size of the positive plate, the size of the negative plate and the size of the diaphragm in the first positioning parameters, the sample positive plate, the sample negative plate and the sample diaphragm of each battery are manufactured, the sample diaphragm, the sample negative plate and the sample positive plate are wound into a winding core in a winding mode, the first error value and the second error value of the missing area of each layer of the sample winding core are calculated, wherein the first error value is the overlap ratio error value, the second error value is the alignment error value, the first positioning parameters are corrected according to the measured error values by accurately measuring the overlap and alignment of the sample winding cores, the errors can be effectively eliminated, the calculation accuracy is improved, the positive and negative plates of each battery and the size of the diaphragm can be accurately positioned, the positive and negative plates of each battery and the size of the diaphragm can be calculated in advance, the positive and negative plates of the corresponding sizes and the diaphragm can be manufactured, the positive and the negative plates of the battery are conveniently wound into the winding core by using the diaphragm, the winding core does not need to be cut for multiple times, the pollution to the battery can be reduced, and the safety of the battery can be improved.
Referring to fig. 4, in some embodiments, step S300 includes:
s310, obtaining the size of the positive plate, the size of the negative plate and the size of the diaphragm of each battery according to the second positioning parameters;
and S320, manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the size of the positive plate, the size of the negative plate and the size of the diaphragm.
According to the second positioning parameters of each battery, the size of the positive plate, the size of the negative plate and the size of the diaphragm of each battery are obtained, and according to the size of the positive plate, the size of the negative plate and the size of the diaphragm, the positive plate, the negative plate and the diaphragm of each battery are subjected to defect area size die cutting respectively to manufacture the positive plate, the negative plate and the diaphragm which meet the size requirement of each battery, and it can be understood that in order to improve the manufacturing efficiency of the batteries, the positive plate, the negative plate and the diaphragm of the batteries can be manufactured in batches, so that the time cost is reduced, and the manufacturing efficiency of battery components is improved.
In some embodiments, the negative electrode tab size of each cell is greater than the positive electrode size and the separator size is greater than the negative electrode tab size.
In order to improve the safety in use of battery, can set up positive plate, negative pole piece and diaphragm's size, the second location parameter includes the positive plate size of each battery, the negative pole piece size of each battery and the diaphragm size of each battery, can set up the negative pole piece size of each battery and be greater than the positive plate size, can guarantee like this that the pole piece in the missing region of each battery can closely wrap up, improves battery performance, can set up the diaphragm size of each battery and be greater than the negative plate size, can guarantee like this that the diaphragm wraps up the negative plate completely to improve the safety in use of battery. In some other embodiments, the dimensions of the positive electrode sheet, the negative electrode sheet, and the separator may be set in other manners, which is not limited thereto.
Referring to fig. 5, in some embodiments, step S400 includes:
s410, unreeling the diaphragm according to the second positioning parameters;
s420, winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core.
After the positive plate, the negative plate and the diaphragm of each battery are manufactured, the positive plate, the negative plate and the diaphragm of each battery are coiled into a coil core in a diaphragm unreeling and coil needle coiling mode, for example, a semi-automatic coiling machine can be selected for coiling, the width of the coil needle is adjusted, the diaphragm is installed, the positive plate is placed on the upper layer, the negative plate is placed on the lower layer, and the positive plate, the negative plate and the diaphragm of each battery are coiled into the coil core by the diaphragm. In order to improve the connection tightness of the battery, the positive electrode lug and the positive electrode plate of the battery can be welded by adopting an ultrasonic welding machine, and the negative electrode lug and the negative electrode plate can be welded, so that the connection stability of the inside of the battery can be ensured, and the use safety of the battery is improved.
Referring to fig. 6, in some embodiments, step S500 includes:
s510, punching corresponding shells according to the shape of the winding core;
and S520, packaging the shell and the winding core to obtain the battery.
According to the shape of the coil core of the battery, the shell corresponding to the shape of the coil core is punched, the coil core is placed in the battery cavity, the coil core is wrapped by the shell, one-time packaging is completed, the one-time packaging comprises top sealing of the battery and side sealing of the right side of the battery, and electrolyte is poured from the left side of the battery cavity for pre-packaging, so that the battery is obtained, and the battery can be assembled, and the use safety of the battery is guaranteed. It should be noted that the casing may be an aluminum plastic film casing, so that the performance of the battery can be improved, and the casing may be made of other materials, not limited thereto.
In some embodiments, after step S500, comprising:
and (5) carrying out aging treatment on each battery to obtain a final battery.
After the battery is pre-packaged, normal temperature aging, high temperature pressurization pre-aging and secondary high temperature aging can be performed on the battery for a certain time, then the battery is pumped out and secondarily packaged on a vacuum sealing machine, and gas and redundant electrolyte in the battery are pumped out through an air bag port to obtain a final battery. Therefore, the performance of the battery and the use safety of the battery can be further improved, and the service life of the battery is prolonged.
In a second aspect, an embodiment of the present invention further provides a battery manufactured according to the above battery manufacturing method. The battery provided by the embodiment of the invention has at least the following beneficial effects: the battery is manufactured by adopting the battery manufacturing method, the first positioning parameters of the missing area of the battery are calculated, the first positioning parameters are modified to obtain the second positioning parameters, the positive and negative pole pieces and the diaphragm of the battery are manufactured according to the second positioning parameters, so that the positive and negative pole pieces are wound by the diaphragm to form a winding core, the winding core is subjected to shell punching packaging to obtain the battery, the positive and negative pole pieces and the diaphragm of the battery can be accurately positioned, the positive and negative pole pieces are wound by the diaphragm to form the winding core conveniently, the pollution to the battery can be reduced, and the use safety of the battery is improved.
In a third aspect, an embodiment of the present invention further provides an electronic device having the above battery. The electronic equipment provided by the embodiment of the invention has at least the following beneficial effects: the electronic equipment adopts the battery, calculates the first positioning parameters of the missing area of the battery when the battery is manufactured, modifies the first positioning parameters to obtain the second positioning parameters, and manufactures the positive and negative pole pieces and the diaphragm of the battery according to the second positioning parameters, so that the positive and negative pole pieces are wound by the diaphragm to form a winding core, and the winding core is subjected to shell punching packaging to obtain the battery, so that the positive and negative pole pieces and the diaphragm of the battery can be accurately positioned, the positive and negative pole pieces are wound by the diaphragm to form the winding core conveniently, the pollution to the battery can be reduced, and the use safety of the battery is improved, thereby improving the working stability of the electronic equipment.
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 one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Claims (8)
1. A method of manufacturing a battery, comprising:
calculating a first positioning parameter of a missing region of each battery;
correcting the first positioning parameter to obtain a second positioning parameter;
manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the second positioning parameters;
winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core;
punching and packaging the winding cores to obtain each battery;
wherein, the calculating the first positioning parameter of the missing area of each battery includes:
acquiring a battery parameter set of a missing area of each battery;
dividing the winding core of each battery into a first area and a second area;
obtaining a calculation model for calculating the first positioning parameters according to the battery parameter set, the first area and the second area;
obtaining the first positioning parameters according to the battery parameter set and the calculation model;
the correcting the first positioning parameter to obtain a second positioning parameter includes:
manufacturing a sample positive plate, a sample negative plate and a sample diaphragm of each battery according to the first positioning parameters;
winding the sample positive plate, the sample negative plate and the sample diaphragm to form a sample winding core;
calculating a first error value and a second error value of a missing region of the sample winding core;
and correcting the first positioning parameter according to the first error value and the second error value to obtain the second positioning parameter.
2. The method of manufacturing a battery according to claim 1, wherein the manufacturing of the positive electrode sheet, the negative electrode sheet, and the separator of each of the batteries according to the second positioning parameter comprises:
obtaining the size of the positive plate, the size of the negative plate and the size of the diaphragm of each battery according to the second positioning parameters;
and manufacturing a positive plate, a negative plate and a diaphragm of each battery according to the size of the positive plate, the size of the negative plate and the size of the diaphragm.
3. The method of manufacturing a battery according to claim 2, wherein a negative electrode sheet size of each of the batteries is larger than the positive electrode sheet size, and the separator size is larger than the negative electrode sheet size.
4. The method of manufacturing a battery according to claim 1, wherein winding the positive electrode sheet, the negative electrode sheet, and the separator of each of the batteries to form a winding core comprises:
unreeling the diaphragm according to the second positioning parameters;
and winding the positive plate, the negative plate and the diaphragm of each battery to form a winding core.
5. The method of manufacturing a battery according to claim 1, wherein said subjecting said winding core to a can-punching package to obtain each of said batteries comprises:
punching corresponding shells according to the shape of the winding core;
and packaging the shell and the winding core to obtain each battery.
6. The method according to any one of claims 1 to 5, wherein after the core is subjected to the can-punching packaging to obtain each of the batteries, comprising:
and carrying out aging treatment on each battery to obtain a final battery.
7. A battery, characterized in that the battery is manufactured according to the battery manufacturing method according to any one of claims 1 to 6.
8. An electronic device comprising the battery of claim 7.
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