CN112670599B - Battery cell winding method and battery preparation method - Google Patents
Battery cell winding method and battery preparation method Download PDFInfo
- Publication number
- CN112670599B CN112670599B CN202011547237.3A CN202011547237A CN112670599B CN 112670599 B CN112670599 B CN 112670599B CN 202011547237 A CN202011547237 A CN 202011547237A CN 112670599 B CN112670599 B CN 112670599B
- Authority
- CN
- China
- Prior art keywords
- winding
- battery
- piece
- strip
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Secondary Cells (AREA)
Abstract
The application provides a battery core winding method and a battery preparation method. The cell winding method comprises the following steps: fixing the end part of the winding core belt body on a winding piece of the battery core winding equipment; controlling the winding piece to rotate; arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products; controlling the winding piece to stop rotating; shearing the belt body of the winding core to obtain a semi-finished product of the battery winding core; sticking an adhesive tape on the side surface of the semi-finished product of the battery winding core so as to fix the structure of the semi-finished product of the battery winding core; and drawing out the winding piece and the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the battery roll core semi-finished product to obtain the battery roll core. After the completion was convoluteed and was taken out winding member and strip baffle, the position that originally was provided with the strip baffle is formed with the space promptly, and the core area body that rolls up the core of battery will take place to warp and will fill the space rapidly, rolls up the core area body and will release the internal stress that the winding in-process was gathered at the deformation process for the internal stress that the core was rolled up to the battery descends by a wide margin.
Description
Technical Field
The invention relates to the technical field of battery processing, in particular to a battery cell winding method and a battery preparation method.
Background
A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. With the development of science and technology, lithium batteries have become mainstream and are widely applied in various fields. The lithium battery mainly comprises a laminated lithium battery, namely a coiled lithium battery, wherein the coiled lithium battery has larger electric energy reserve and smaller volume, so that the coiled lithium battery is more favored by consumers.
At present, a winding process is needed to be carried out during the processing of the winding type lithium battery in the industry, and the process has the advantages of high production efficiency, low cost and the like; however, there is a significant disadvantage that during winding, the winding belt body must be wound by tension traction, and the tension directly causes a certain internal stress to exist in the wound battery cell, especially when the winding speed is high, the accumulation effect of the internal stress will be more significant, and the stress will be slowly released when the battery is in a power regeneration cycle, so that the battery is deformed, and then the cycle performance is deteriorated, and finally the electric energy reserve of the battery is greatly reduced, and the battery is even scrapped.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a cell winding method and a battery preparation method which can release internal stress of a cell, improve the performance of a battery and improve the safety of the battery
The purpose of the invention is realized by the following technical scheme:
a cell winding method comprises the following steps:
fixing the end part of the winding core belt body on a winding piece of the battery cell winding equipment;
controlling the winding piece to rotate to enable the winding core belt body to be wound on the winding piece to form a winding semi-finished product;
arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products, and fixing the relative position relationship between the strip-shaped partition plates and the winding semi-finished products so as to enable the winding core belt body to be wound on the winding semi-finished products and the strip-shaped partition plates, wherein the length directions of the strip-shaped partition plates are parallel to the axial direction of the winding piece;
controlling the winding piece to stop rotating;
shearing the roll core band body to obtain a battery roll core semi-finished product;
adhering an adhesive tape to the side surface of the battery roll core semi-finished product so as to fix the structure of the battery roll core semi-finished product;
and drawing out the winding piece and the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the semi-finished product of the battery roll core to obtain the battery roll core.
In one embodiment, the winding thickness of the winding blank is greater than or equal to one third of the winding thickness of the battery core, and the winding thickness of the winding blank is less than or equal to two thirds of the winding thickness of the battery core.
In one embodiment, the section of the strip-shaped partition board is in a sector ring shape.
In one embodiment, the step of withdrawing the winding member and the strip-shaped separator includes:
withdrawing the winding member;
and drawing out the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the battery roll core semi-finished product.
In one embodiment, the step of controlling the winding member to rotate specifically includes:
controlling the winding piece to rotate for the first time;
after the step of controlling the winding member to rotate for the first time and before the step of arranging the strip-shaped partition board on the side surface of the winding semi-finished product, the cell winding method further comprises the following steps:
controlling the winding piece to stop rotating for the first time;
the step of arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products comprises the following steps:
arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products;
controlling the winding piece to rotate for the second time;
the step of controlling the winding piece to stop rotating specifically comprises the following steps: and controlling the winding piece to stop rotating for the second time.
In one embodiment, in the step of controlling the winding member to perform the first rotation, the rotation speed of the winding member is a first rotation speed, and in the step of controlling the winding member to perform the second rotation, the rotation speed of the winding member is a second rotation speed, and the first rotation speed is greater than the second rotation speed.
In one embodiment, the strip separator has a length greater than the width of the core web.
In one embodiment, in the step of arranging the strip-shaped partition board on the side surface of the winding semi-finished product, the end surface of one end of the strip-shaped partition board is flush with the end surface of one end of the winding semi-finished product.
In one embodiment, in the step of controlling the winding member to rotate, an end face of one end of the winding member is made flush with an end face of one end of the winding work piece.
A battery manufacturing method, which includes the cell winding method in any of the above embodiments.
Compared with the prior art, the invention has at least the following advantages:
because the side of coiling the semi-manufactured goods is provided with the strip baffle at the coiling in-process, so roll up the core area body and will coil on the integrated configuration who convolutes semi-manufactured goods and strip baffle, after accomplishing the coiling and taking out winding and strip baffle, the position that originally was provided with the strip baffle is formed with the space promptly, the core area body that rolls up of battery core will take place to warp and will fill the space rapidly, roll up the core area body and will release the internal stress that the coiling in-process was gathered at the deformation in-process, make the internal stress that the battery rolled up the core descend by a wide margin, the internal structure stability that the battery rolled up the core also correspondingly improves, and then can avoid the battery performance decline or even the condemned condition that leads to because of inside deformation in the follow-up processing of electric core and use, keep the stability of battery performance effectively and the security and the life of improvement electric core.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flowchart of a cell winding method according to an embodiment;
fig. 2 is a schematic structural diagram of a cell winding device of the cell winding apparatus used in the cell winding method shown in fig. 1;
fig. 3 isbase:Sub>A cross-sectional view of the cell winding device shown in fig. 2, taken along the linebase:Sub>A-base:Sub>A.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The cell winding method of an embodiment includes the steps of: fixing the end part of the winding core belt body on a winding piece of the battery cell winding equipment; controlling the winding piece to rotate to enable the winding core belt body to be wound on the winding piece to form a winding semi-finished product; arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products, and fixing the relative position relationship between the strip-shaped partition plates and the winding semi-finished products so as to enable the winding core belt body to be wound on the winding semi-finished products and the strip-shaped partition plates, wherein the length directions of the strip-shaped partition plates are parallel to the axial direction of the winding piece; controlling the winding piece to stop rotating; shearing the roll core band body to obtain a battery roll core semi-finished product; adhering an adhesive tape to the side surface of the battery roll core semi-finished product so as to fix the structure of the battery roll core semi-finished product; and drawing out the winding piece and the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the semi-finished product of the battery roll core to obtain the battery roll core.
Compared with the prior art, the invention has at least the following advantages:
because the side of coiling the semi-manufactured goods is provided with the strip baffle at the coiling in-process, so roll up the core area body and will coil on the integrated configuration who convolutes semi-manufactured goods and strip baffle, after accomplishing the coiling and taking out winding and strip baffle, the position that originally was provided with the strip baffle is formed with the space promptly, the core area body that rolls up of battery core will take place to warp and will fill the space rapidly, roll up the core area body and will release the internal stress that the coiling in-process was gathered at the deformation in-process, make the internal stress that the battery rolled up the core descend by a wide margin, the internal structure stability that the battery rolled up the core also correspondingly improves, and then can avoid the battery performance decline or even the condemned condition that leads to because of inside deformation in the follow-up processing of electric core and use, keep the stability of battery performance effectively and the security and the life of improvement electric core.
As shown in fig. 1, in order to better understand the cell winding method according to the present embodiment, the following steps of the cell winding method according to the present embodiment are described in detail, where the cell winding method is used to wind a core band body to form a battery core, and specifically, the cell winding method includes the following steps:
s100: and fixing the end part of the winding core belt body on a winding piece of the battery cell winding equipment. The winding core belt body is wound into a winding shape after being coated, flattened and dried, the winding core belt body of the winding shape is sleeved on a feeding shaft of the electric core winding equipment, the end part of the winding core belt body is drawn out, the end part of the winding core belt body is fixed on a winding piece of the electric core winding equipment, and when the winding piece rotates, the winding core belt body can be driven to move, so that the winding core belt body starts to be wound on the winding piece.
S200: and controlling the winding part to rotate to enable the winding core belt body to be wound on the winding part to form a winding semi-finished product. After the end part of the winding core belt body is fixed on the winding part, in the step, the winding part is controlled to rotate, the end part of the winding core belt body is fixed with the winding part, the winding core belt body moves along with the winding part to start winding on the winding part, when the winding core belt body is wound to a certain thickness, a winding semi-finished product is formed, and the winding semi-finished product is still connected with the winding core belt body at the moment because the winding core belt body is not sheared.
S300: and arranging a strip-shaped partition plate on the side surface of the winding semi-finished product, and fixing the relative position relationship between the strip-shaped partition plate and the winding semi-finished product so as to enable the winding core belt body to be wound on the winding semi-finished product and the strip-shaped partition plate, wherein the length direction of the strip-shaped partition plate is parallel to the axial direction of the winding piece. When the winding belt body is wound on the winding piece to a certain thickness, a winding semi-finished product is formed, a strip-shaped partition plate is arranged on the side surface of the winding semi-finished product, the length direction of the strip-shaped partition plate is parallel to the axial direction of the winding piece, and the strip-shaped partition plate and the winding semi-finished product are kept fixed in relative positions, so that when the winding piece continues to rotate to drive the winding core belt body to wind, the winding core belt body covers the strip-shaped partition plate on the winding semi-finished product, and the winding core belt body continues to wind on the strip-shaped partition plate and the winding semi-finished product.
S400: and controlling the winding piece to stop rotating. When the winding core belt body is wound to the preset thickness, the winding part is controlled to stop rotating so as to collect and wind the obtained product.
S500: and shearing the roll core belt body to obtain a battery roll core semi-finished product. And after the winding part stops rotating, the winding core band body stops winding, and the winding core band body can be subtracted at the moment to obtain the semi-finished product of the battery winding core.
S600: and adhering an adhesive tape to the side surface of the battery roll core semi-finished product so as to fix the structure of the battery roll core semi-finished product. Because the outermost side of the battery roll core semi-finished product with the roll core belt body subtracted is not fixed, in the step, the adhesive tape is adhered to the side face of the battery roll core semi-finished product and fixes the outermost side of the battery roll core semi-finished product, so that the belt body on the outermost side of the battery roll core semi-finished product is fixed, and the battery roll core semi-finished product with a stable structure is formed.
S700: and drawing out the winding piece and the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the battery roll core semi-finished product to obtain the battery roll core. After the structure of the semi-finished product of the battery roll core is fixed by the adhesive tape, the structure of the semi-finished product of the battery roll core is stable, the winding part and the strip-shaped partition plate can be pulled out, and the battery roll core is obtained after the winding part and the strip-shaped partition plate are pulled out. Because the strip-shaped partition plate is arranged on the side surface of the winding semi-finished product in the winding process, and the strip-shaped partition plate and the winding semi-finished product keep the relative position to be fixed, the winding core belt body can be wound on the combined structure of the winding semi-finished product and the strip-shaped partition plate, after the winding is completed and the winding part and the strip-shaped partition plate are drawn out, a gap is formed at the position where the strip-shaped partition plate is originally arranged, the winding core belt body of the battery winding core can deform and can fill the gap rapidly, the internal stress accumulated in the winding process can be released in the deformation process of the winding core belt body, the internal stress of the battery winding core is greatly reduced, the stability of the internal structure of the battery winding core is correspondingly improved, the condition that the performance of the battery is reduced or even scrapped due to internal deformation in the subsequent processing and use of the battery core can be avoided, and the stability of the performance of the battery can be effectively maintained, and the safety and the service life of the battery core can be improved.
In one embodiment, the winding thickness of the winding blank is greater than or equal to one-third of the winding thickness of the cell core, and the winding thickness of the winding blank is less than or equal to two-thirds of the winding thickness of the cell core. The purpose of setting up strip baffle is that the battery that rolls up after accomplishing provides the stress release space, consequently, carry out the setting of strip baffle when convoluteing to predetermineeing battery roll core half of thickness, can obtain better stress release effect, in this embodiment, it is greater than or equal to the one-third of the winding thickness that the battery rolled up the core to convolute half-finished winding thickness, and it is less than or equal to the two-thirds that the battery rolled up the core winding thickness to convolute half-finished winding thickness, so, can make the strip baffle set up the middle level position that lies in total winding thickness, make the roll core area body before the strip baffle sets up and after setting up can only be better fill the space, and then make the better stress release that carries on of the roll core area body homoenergetic before the strip baffle sets up and after setting up, make the stress release effect of electric core better promptly, the inner structure of electric core is better stable.
In one embodiment, the section of the strip-shaped partition board is in a sector ring shape. The purpose of setting up strip baffle is for accomplishing the battery core after coiling and provide stress release space, however, the structure of strip baffle has a kind of important influence to the performance of electric core, if the space that strip baffle occupy is when great in the coiling process, the space that will lead to forming after strip baffle takes out is too big, make the coiling density of electric core hang down excessively, lead to the electric energy storage volume of electric core to hang down excessively, therefore, in this embodiment, the cross-section of strip baffle is fan-ring shape, when coiling, the strip baffle of fan-ring shape cross-section can with the shape looks adaptation of coiling semi-manufactured goods's side, the space of avoiding taking out after strip baffle formation is too big, possess higher electric energy reserve when reaching the release internal stress, and the side of the strip baffle of fan-ring shape cross-section is the arcwall face, help improving the coiling operation stability after setting up strip baffle, prevent to set up the condition that the coiling operation behind strip baffle takes place the area body skew.
In one embodiment, the step of withdrawing the winding member and the strip-shaped separator includes: withdrawing the winding member; and drawing out the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the battery roll core semi-finished product. Because when taking out winding member and strip baffle, have frictional force between winding member and strip baffle and the book core area body, there is the possibility of destroying battery roll core structure when winding member and strip baffle are taken out, in this embodiment, take out winding member and the step of strip baffle specifically is: the winding part is drawn out firstly, and then the strip-shaped partition plates are drawn out, so that the condition that the strip-shaped partition plates and the winding part are too large in friction force when being drawn out, and the inner belt body of the battery winding core is brought out together is avoided, and the defective rate in winding processing is reduced; in addition, because the strip baffle is located the middle level position of coiling, consequently, the both sides of strip baffle all with roll up the contact of the core area body, and the winding only with the roll core area body contact at winding center, consequently, the frictional force when taking out the strip baffle is bigger, in this embodiment, take out earlier after the winding, the position that the winding occupied originally will form the space, the battery rolls up the core and can carry out deformation earlier and release partly stress, make the density of battery rolls up the core obtain descending, after the winding density reduces, the frictional force with rolling up the core area body when the strip baffle is taken out will descend, and then can reduce the probability that the core area body was taken out when the strip baffle was taken out, reduce the defective rate of processing.
In one embodiment, the step of controlling the winding member to rotate specifically includes: and controlling the winding piece to rotate for the first time. After the step of controlling the winding member to rotate for the first time and before the step of arranging the strip-shaped partition plates on the side surfaces of the winding semi-finished product, the cell winding method further comprises the following steps: and controlling the winding piece to stop rotating for the first time. The step of arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products comprises the following steps: arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products; and controlling the winding piece to rotate for the second time. The step of controlling the winding piece to stop rotating specifically comprises the following steps: and controlling the winding piece to stop rotating for the second time. In this embodiment, the winding part is controlled to stop winding before the strip-shaped partition plates are arranged, and the winding part is controlled to wind again after the strip-shaped partition plates are arranged, so that sufficient time for arranging the strip-shaped partition plates can be fully ensured, the strip-shaped partition plates can be accurately arranged, the length direction of the strip-shaped partition plates can be ensured to be in the axial direction of the winding part, the strip-shaped partition plates are prevented from being arranged in a bin in the rotating process, the strip-shaped partition plates are prevented from being deviated, and the winding quality is prevented from being influenced due to the deviation of the strip-shaped partition plates.
In one embodiment, in the step of controlling the winding member to perform the first rotation, the rotation speed of the winding member is a first rotation speed, and in the step of controlling the winding member to perform the second rotation, the rotation speed of the winding member is a second rotation speed, and the first rotation speed is greater than the second rotation speed. In this embodiment, before the strip-shaped partition board is arranged on the semi-finished product, the winding speed of the winding member is a first rotation speed, and after the strip-shaped partition board is arranged on the semi-finished product, the winding speed of the winding member is a second rotation speed, and the first rotation speed is greater than the second rotation speed. It should be noted that, when the winding speed is higher, the internal stress accumulated in the winding core belt body is correspondingly increased, after the winding is completed and the winding piece and the strip-shaped partition plates are drawn out, the winding core belt body which is wound before the semi-finished product is wound and the strip-shaped partition plates are arranged can release the stress through the gaps formed by the winding piece and the gaps formed by the strip-shaped partition plates, namely, the winding core which is wound before the semi-finished product is arranged and the strip-shaped partition plates are arranged has a larger stress release space, so that when the first rotation speed is higher, the stress accumulation caused by the high rotation speed can be better released, the winding efficiency is improved, and the processing efficiency is further improved; and the coiled core belt body which finishes coiling after the semi-finished product is coiled and provided with the strip-shaped partition plates basically can only release stress through gaps formed by the strip-shaped partition plates, so that when the second rotating speed is lower, the internal stress of the coiled core belt body which finishes coiling after the semi-finished product is coiled and provided with the strip-shaped partition plates is favorably controlled, and the condition that the internal stress of the coiled core belt body is too large, so that the internal stress cannot be better released after the strip-shaped partition plates are drawn out is avoided.
In one embodiment, the strip-shaped separator has a length greater than the width of the rolled core tape body. After setting up the strip baffle on winding semi-manufactured goods's side, roll up the core area body and coil on winding semi-manufactured goods promptly the integrated configuration of strip baffle promptly, roll up the core area body promptly and need coil on the strip baffle when coiling, in this embodiment, the length of strip baffle is greater than the width of rolling up the core area body, after setting up the strip baffle and coiling promptly, roll up the core area body and overlap joint completely on the strip baffle, prevent the uneven condition of the tension of the core area body on the width direction, and then can avoid rolling up the core area body and take place the skew, prevent that the condition of rolling up the core area body dislocation when coiling from taking place.
In one embodiment, in the step of arranging the strip-shaped partition board on the side surface of the semi-finished product, the end surface of one end of the strip-shaped partition board is flush with the end surface of one end of the semi-finished product. After the winding is finished, the strip-shaped partition plate and the winding part need to be drawn out to separate the strip-shaped partition plate and the winding part from the battery winding core semi-finished product.
In one embodiment, in the step of controlling the winding member to rotate, an end face of one end of the winding member is flush with an end face of one end of the winding blank. After the winding is completed, the strip-shaped partition plate and the winding piece need to be drawn out to separate the strip-shaped partition plate and the winding piece from the battery winding core semi-finished product.
In one embodiment, the cell winding method winds the winding core tape body by using a cell winding apparatus, as shown in fig. 2 and fig. 3, in this embodiment, the cell winding apparatus includes a cell winding device 10, and the cell winding device 10 includes a frame, a winding mechanism 100, and a board inserting mechanism 200. The winding mechanism 100 includes a winding member 110, a first rotating member 120 and a first driving member 130, the first driving member is connected to the rack, a power output end of the first driving member 130 is connected to the first rotating member 120, the first driving member 130 is used for driving the first rotating member 120 to rotate, the first rotating member 120 is connected to the winding member 110, and a rotation central axis of the first rotating member 120 and a central axis of the winding member 110 are arranged in a superposition manner. The board inserting mechanism 200 includes a strip-shaped partition board 210, a sliding adjusting member 220 and a first telescopic member 230, the first telescopic member 230 is connected to the first rotating member 120, the sliding adjusting member 220 includes a connecting block 221 and a sliding block 222, a telescopic end of the first telescopic member 230 is connected to the connecting block 221, the first telescopic member 230 is used for driving the connecting block 221 to move axially along the winding member 110, the connecting block 221 is provided with a sliding groove 221a, the sliding groove 221a is formed along a radial direction of the winding member 110, the sliding block 222 is slidably disposed in the sliding groove 221a, so that the sliding block 222 is slidably connected to the connecting block 221, the sliding block 222 is connected to the strip-shaped partition board 210, and a length direction of the strip-shaped partition board 210 is parallel to an axial direction of the winding member 110.
In this embodiment, the first driving member 130 is used to drive the first rotating member 120 to rotate, the first rotating member 120 drives the winding member 110 to rotate, during winding, the end of the winding core tape body is fixed on the winding member 110, and when the winding member 110 rotates, the winding core tape body is driven to move, so that the winding core tape body starts to be wound on the winding member 110. The first expansion piece 230 is connected with the first rotating member 120, so that the first expansion piece 230 can move along with the rotation of the first rotating member 120, the first expansion piece 230 is connected with the sliding adjusting member 220, the sliding adjusting member 220 is connected with the strip-shaped partition 210, the first expansion piece 230 is used for driving the sliding adjusting member 220 and the strip-shaped partition 210 to move along the axial direction of the winding member 110, when the winding of the strip body is just started, the first expansion piece 230 is in a contraction state, when the winding of the strip body is wound on the winding member 110 into a winding semi-finished product with a certain thickness, at this time, the expansion end of the first expansion piece 230 extends out to drive the strip-shaped partition 210 to move to one side of the winding semi-finished product, and as the length direction of the strip-shaped partition 210 is parallel to the axial direction of the winding member 110, the winding core will be positioned to cover the strip-shaped partition 210, and the winding core will continue to be wound on the combined structure of the strip-shaped partition 210 and the winding semi-finished product. After accomplishing the coiling and taking out strip baffle 210, the position that originally was provided with strip baffle 210 is formed with the space promptly, the core area body that rolls up of battery core will take place to warp and will fill the space rapidly, roll up the internal stress that the core area body will release the coiling in-process and gather at the deformation process, make the internal stress that the battery rolled up the core descend by a wide margin, the internal structure stability that the core was rolled up to the battery is corresponding also to be improved, and then can avoid the battery performance decline or even condemned condition that leads to because of inside deformation in the follow-up processing and the use of electric core, keep the stability of battery performance and the security and the life of improvement electric core effectively.
Further, the sliding connection member includes a connection block 221 and a slider 222, the strip-shaped partition board 210 is connected to the slider 222, the slider 222 is slidably disposed in a sliding groove 221a of the connection block 221, the sliding groove 221a is formed along a radial direction of the winding member 110, a radial distance between the strip-shaped partition board 210 and the winding member 110 can be changed by changing a position of the slider 222 in the sliding groove 221a, when a thickness of a cell to be wound is large, a radial distance between the strip-shaped partition board 210 and the winding member 110 can be increased, when a thickness of the cell to be wound is small, a radial distance between the strip-shaped partition board 210 and the winding member 110 can be decreased, and the strip-shaped partition board 210 can be adapted to cells with different winding thicknesses, so that a position of a gap formed by the strip-shaped partition board 210 is more reasonable, and a stress release effect of the cell is improved.
As shown in fig. 3, in one embodiment, the sliding adjusting member 220 further includes a screw 224 and a knob 223, the connecting block 221 is provided with a through hole, the through hole is communicated with an end of the sliding groove 221a far away from the winding member 110, the slider 222 is provided with a screw hole, an axial direction of the screw 224 is parallel to a length direction of the sliding groove 221a, the screw 224 sequentially penetrates through the through hole and the screw hole to rotatably connect the screw 224 with the connecting block 221, and the screw 224 is screwed with the slider 222, the knob 223 is located outside the connecting block 221, and an end of the screw 224 far away from the winding member 110 is connected with the knob 223. In this embodiment, the screw 224 can be driven to rotate by rotating the knob 223, and since the slider 222 is screwed with the screw 224 and the slider 222 is slidably connected with the connecting block 221, when the screw 224 rotates, the slider 222 can be driven to slide in the sliding groove 221a along the radial direction of the winding element 110, so as to change the radial distance between the strip-shaped partition 210 and the winding element 110, that is, the relative position between the slider 222 and the connecting block 221 can be conveniently changed by rotating the knob 223, so that the operation is simpler and more convenient when the radial distance between the strip-shaped partition 210 and the winding element 110 is changed.
In one embodiment, as shown in fig. 3, the end of the screw 224 adjacent to the winding member 110 is rotatably connected to the chute 221a adjacent to the end chute wall of the winding member 110. In this embodiment, the end of the screw 224 adjacent to the winding member 110 extends to the groove wall of the end of the sliding groove 221a adjacent to the winding member 110, and the end of the screw 224 is rotatably connected to the groove wall of the sliding groove 221a, so that the sliding control stroke of the screw 224 can be increased to cover the whole sliding groove 221a area, and the controllable sliding stroke of the slider 222 can be improved.
As shown in fig. 3, in one embodiment, the knob 223 is provided with a slip prevention groove 223a at a side thereof. In this embodiment, the side of the knob 223 is provided with the anti-slip groove 223a, and the anti-slip groove 223a can increase the roughness of the side of the knob 223, and then when operating the knob 223, can increase the static friction coefficient of the side of the knob 223, so that the knob 223 is not easy to slip when rotating, and then the operation of rotating the knob 223 is more convenient.
As shown in fig. 3, in one embodiment, the cross section of the strip-shaped partition 210 is a sector ring. The purpose of providing the strip-shaped partition board 210 is to provide a stress release space for the battery winding core after winding, however, the structure of the strip-shaped partition board 210 has an important influence on the performance of the battery cell, and if the space occupied by the strip-shaped partition board 210 is large during winding, the gap formed after the strip-shaped partition board 210 is drawn out is too large, so that the winding density of the battery cell is too low, and the electric energy storage amount of the battery cell is too low, therefore, in this embodiment, the cross section of the strip-shaped partition board 210 is in a fan-ring shape, and during winding, the strip-shaped partition board 210 with the fan-ring-shaped cross section can be adapted to the shape of the side surface of the wound semi-finished product, so as to avoid the gap formed after the strip-shaped partition board 210 is drawn out to be too large, so as to achieve releasing internal stress and have a higher electric energy reserve, and the side surface of the strip-shaped partition board 210 with the fan-ring-shaped cross section is an arc surface, which is beneficial to improving the stability of the winding operation after the strip-shaped partition board 210 is provided, and preventing the winding operation from generating a situation of belt body offset after the strip-shaped partition board 210 is provided.
As shown in fig. 2, in one embodiment, the winding mechanism 100 further includes a second telescopic member 140, the second telescopic member 140 is connected to the first rotating member 120, a telescopic end of the second telescopic member 140 is connected to the winding member 110, and the second telescopic member 140 is used for driving the winding member 110 to move along the axial direction of the winding member 110. In this embodiment, the flexible end of second extensible member 140 is connected with winding member 110, and when winding member 110 was convoluteed the core area body, the flexible end of second extensible member 140 was in the state of stretching out, when coiling the completion, through the core after the centre gripping was accomplished, the flexible end of second extensible member 140 contracted and driven winding member 110 and moved, can make winding member 110 take out from rolling up the core. Thus, the separation speed of the winding element 110 and the winding core can be increased, and the processing efficiency is improved.
As shown in fig. 2 and fig. 3, in one embodiment, the electrical core winding device 10 further includes an auxiliary supporting mechanism 300, the auxiliary supporting mechanism 300 includes a second rotating element 310 and a winding thimble 320, the second rotating element 310 is rotatably connected to the rack, a rotation central axis of the second rotating element 310, a central axis of the winding thimble 320, and a central axis of the winding element 110 are overlapped, a first positioning slot is opened on an end surface of the winding element 110 far from the second telescopic element 140, and an end portion of the winding thimble 320 far from the second rotating element 310 is disposed in the thimble positioning slot. When the winding element 110 winds, the telescopic end of the second telescopic element 140 extends out, so that the winding element 110 is far away from the second telescopic element 140 and moves towards the winding thimble 320, the winding thimble 320 is inserted into the first positioning groove on the end surface of the winding element 110, when the winding element 110 rotates, the end part of the winding thimble 320, which is far away from the second telescopic element 140, of the winding element 110 is supported, the rotation stability of the winding element 110 is improved, the winding core body is prevented from being deviated in the winding process, and the winding quality of the winding core body is improved.
As shown in fig. 2, in one embodiment, the auxiliary supporting mechanism 300 further includes a second driving element 330, the second driving element 330 is connected to the frame, a power output end of the second driving element 330 is connected to the second rotating element 310, and the second driving element 330 is used for driving the second rotating element 310 to rotate. When the winding element 110 rotates, the winding thimble 320 and the second rotating element 310 will rotate synchronously with the winding element 110 under the driving of winding, in this embodiment, the second rotating element 310 is connected to the power output end of the second driving element 330, and the second driving element 330 can drive the second rotating element 310 to rotate synchronously with the first rotating element 120, so as to reduce the torque borne by the winding element 110 and improve the service life of the winding element 110.
As shown in fig. 2, in one embodiment, an end surface of the winding member 110 away from the first rotating member 120 is flush with an end surface of the strip-shaped partition 210 away from the first telescopic member 230. In the winding process, the winding belt body is fixed at the end part of the winding part 110, and the end surface of the winding core formed by winding the winding belt body is flush with the winding part 110, so that in the process of pulling away the winding part 110, the pulling-out distance of the winding part 110 can be reduced, the friction force work amount between the winding core and the winding part 110 when the winding part 110 is pulled out is reduced, the probability of damaging the winding core when the winding part 110 is pulled out is further reduced, the effect of reducing the processing defective rate is achieved, and in the same way, when winding, the end surface of the strip-shaped partition plate 210 is flush with the end surface of the winding core, and the defective rate of the winding core when the strip-shaped partition plate 210 is pulled out is mainly reduced.
The application also provides a battery preparation method, and the battery preparation method is the battery cell winding method in any embodiment. In one embodiment, the cell winding method includes the following steps: fixing the end part of the winding core belt body on a winding piece of the battery cell winding equipment; controlling the winding part to rotate to enable the winding core belt body to be wound on the winding part to form a winding semi-finished product; arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products, and fixing the relative position relationship between the strip-shaped partition plates and the winding semi-finished products so as to enable the winding core belt body to be wound on the winding semi-finished products and the strip-shaped partition plates, wherein the length directions of the strip-shaped partition plates are parallel to the axial direction of the winding piece; controlling the winding piece to stop rotating; shearing the roll core band body to obtain a battery roll core semi-finished product; adhering an adhesive tape to the side surface of the battery roll core semi-finished product so as to fix the structure of the battery roll core semi-finished product; and drawing out the winding piece and the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the battery roll core semi-finished product to obtain the battery roll core.
Compared with the prior art, the invention has at least the following advantages: because the strip-shaped partition plate is arranged on the side surface of the winding semi-finished product in the winding process, the winding core belt body is wound on the combined structure of the winding semi-finished product and the strip-shaped partition plate, after the winding is finished and the winding piece and the strip-shaped partition plate are drawn out, gaps are formed at the position where the strip-shaped partition plate is originally arranged, the winding core belt body of the battery winding core is deformed and is rapidly filled with the gaps, the internal stress accumulated in the winding process can be released in the deformation process of the winding core belt body, the internal stress of the battery winding core is greatly reduced, the stability of the internal structure of the battery winding core is correspondingly improved, the condition that the performance of the battery is reduced or even scrapped due to internal deformation in the subsequent processing and use of the battery core can be avoided, the stability of the performance of the battery is effectively kept, and the safety of the battery core is improved, and the service life of the battery is prolonged.
In this embodiment, the method for preparing the battery further includes the following steps: putting the battery roll core into a battery soft package; injecting electrolyte into the battery soft package to soak a battery roll core in the battery soft package; centrifuging the battery soft package; vacuumizing and sealing the battery soft package; and standing the battery soft package.
Specifically, in the step of putting into the soft package of battery with the battery roll core, the soft package of battery is for offering the plastic-aluminum membrane bag body of annotating the liquid mouth, and the battery rolls up the core setting in the inside of the soft bag body of battery. Inject electrolyte in to the soft packet of battery in order to soak in the step of the battery roll core in the soft packet of battery, through annotating the liquid pipe towards the soft packet of opening of battery to the inside injection electrolyte of battery to make the liquid level of electrolyte cross the highest point that the battery rolled the core, electrolyte gets into in the soft packet of battery and rolls up the core contact with the battery and soak the battery and roll up the core. It is right in the step that the soft package of battery carries out centrifugal operation, through carrying out centrifugal operation to the soft package of battery, can make electrolyte obtain the kinetic energy that flows bottom the soft package of battery, after the soft package of battery bottom soaks the packing when electrolyte, under the effect of centrifugal force, electrolyte is piled up to the soft package of battery liquid inlet department orientation from the soft package of battery bottom gradually, the inside air of battery roll core can be extruded completely to the accumulational process of electrolyte to the battery roll core is soaked to the battery roll core in the infiltration battery roll core, and then promote the homogeneity of soaking and the speed of soaking. It is right in the step that the battery is enclosed in the evacuation, carry out the evacuation operation to the battery soft packet, the evacuation operation produces the negative pressure, the negative pressure can be extruded remaining bubble in air and the electrolyte in the battery soft packet, improve the density of electrolyte, make electrolyte have better infiltration effect, and simultaneously, the negative pressure that produces after the vacuum bleeds can make the contact of electrolyte and battery roll core inseparabler, make electrolyte can accelerate to ooze into in the battery roll core structure, and then make the battery roll core absorption electrolyte that can be better, promote the quality of infiltrating and the speed of infiltrating. In the step of standing the battery soft package, the vacuumized electrolyte and the battery roll core are kept in a tight combination state, the battery soft package is kept standing in the state, the battery roll core is fully infiltrated by the electrolyte, and the battery soft package after standing can be subjected to subsequent operations such as formation processing and the like.
Because electrolyte and battery roll up the core and can take place chemical reaction with the air to the soft packet of battery does not accomplish when carrying out centrifugal motion in the battery and seals, consequently outside air gets into the soft packet of battery very easily inside, and the electrolyte in the soft packet of battery also can be in the in-process accident of motion from annotating the liquid mouth and flow simultaneously. Inside for avoiding the soft packet of battery of outside air to get into in a large number, the electrolyte in the soft packet of battery also can be at the in-process of motion accident from annotating the problem that liquid mouthful flowed out simultaneously. In one embodiment, the liquid filling opening of the battery soft bag is arranged at the end part of the battery soft bag, and the size of the liquid filling opening of the battery soft bag is matched with the outer diameter of the liquid filling pipe. When the electrolyte is injected into the battery soft package, the liquid injection pipe extends into the battery soft package from the liquid injection port and injects the electrolyte, and the size of the liquid injection port of the battery soft package is matched with the outer diameter of the liquid injection pipe, so that when the liquid injection pipe extends into the battery soft package for injecting liquid, a communication area inside and outside the battery soft package only remains a gap area between the pipe wall of the liquid injection pipe and the inner wall of the liquid injection port, external air is difficult to flow into the battery soft package in a large amount, and the internal ring shape of the battery soft package can be effectively protected; simultaneously, because the body of annotating the liquid pipe is thinner, and annotate the size of liquid mouth and annotate the external diameter looks adaptation of liquid pipe, after annotating the liquid and accomplish and before carrying out centrifugal operation, the accessible is pressed the notes liquid mouth of battery soft package for annotate the liquid mouth closure, though the battery soft package is in the state of not sealing, nevertheless annotate the liquid mouth less and be in closed form, consequently can effectually prevent the phenomenon that the soft package of battery inside electrolyte flows out when carrying out centrifugal operation.
In order to further improve the sealing performance of the battery soft bag during the centrifugal operation and prevent the electrolyte from flowing out of the battery soft bag during the centrifugal operation, in one embodiment, after the step of injecting the electrolyte into the battery soft bag and before the step of centrifuging the battery soft bag, the battery preparation method further comprises the following steps: firstly, pressing a liquid injection port of the soft package battery to close the liquid injection port; then, the liquid filling opening of the soft package battery is clamped by the clamping piece, so that the clamped piece of the liquid filling opening is sealed. Because annotate the liquid mouth by the holder involution, consequently the soft packet of battery is when carrying out centrifugal motion, and the inside electrolyte of the soft packet of battery can't flow from annotating liquid mouth department, and then has solved the not thorough problem of infiltration that the electrolyte flow leads to.
In one embodiment, the step of centrifuging the battery soft package specifically comprises: and (4) carrying out centrifugal operation on the battery soft package by adopting a centrifugal mechanism to enable the battery soft package to move centrifugally. Further, the centrifugal mechanism comprises a rotary supporting seat assembly, a rotating shaft, an electric motor and a clamping assembly. The rotating support seat assembly comprises two seat bodies, two ends of the rotating shaft are respectively connected with the two seat bodies, the axial direction of the rotating shaft is parallel to the ground, the end part of the rotating shaft is connected with the electric motor to drive the rotating shaft to rotate, the clamping assembly comprises a plurality of clamping pieces, and the plurality of clamping pieces are connected with the rotating shaft. In the step of performing centrifugal operation on the battery soft package, the clamping piece clamps the liquid injection opening of the battery soft package so as to fix the battery soft package and the clamping piece, and the liquid injection opening is sealed, so that the sealing performance of the battery soft package in the centrifugal operation process is improved; simultaneously, because the axial of rotation axis is parallel with ground, therefore the soft package of battery is when rotating, its rotation plane is perpendicular with ground, can make the even bottom of gushing to the soft package of battery of electrolyte of the soft package inner wall of battery, set up with the ground perpendicularly with the axial of rotation axis and compare, can effectually avoid the inhomogeneous condition of the electrolyte volume of the soft both sides of battery in centrifugal operation, and then the air in the soft package of extrusion battery core and battery that can be better, promote the homogeneity of infiltrating.
In one embodiment, in the step of standing the battery soft package, the standing operation of the battery soft package includes a first standing process and a second standing process, the first standing process and the second standing process each account for one half of the total standing time, the standing temperature of the first standing process is 45 ℃ to 50 ℃, and the standing temperature of the second standing process is 40 ℃ to 45 ℃. In the first standing process of the battery soft package, because the electrolyte in the battery soft package has low infiltration degree on the battery core, the battery core still needs to be soaked for a long time to reach a soaking saturation state, therefore, in the first standing process, the battery soft package is kept standing at a higher temperature, specifically, the standing temperature is 45-50 ℃, and in the temperature range, the activity degree of electrolyte molecules is higher, so that the battery soft package can move relative to the battery core more frequently, and the battery core infiltration speed is further improved; after the soaking in the first standing process, the soaking state of the battery cell approaches and is saturated, so that in the second standing process, the battery cell is kept standing at a lower temperature, specifically, the standing temperature is 40-45 ℃, in the range, the activity degree of electrolyte molecules is reduced, the electrolyte molecules interact with the battery cell in a more stable state, the battery cell can reach the soaking saturation in the more stable soaking state, and the soaking quality of the battery cell is better.
In one embodiment, in the step of standing the battery soft package, the battery soft package is controlled to vibrate and turn over. The electrolyte in a vibration state has enhanced fluidity and reduced surface tension, and can move and collide with a battery winding core more frequently, so that electrolyte molecules and the battery winding core are promoted to mutually permeate, and the effect of accelerating the infiltration and absorption speed of the battery core on the electrolyte is further achieved; because at the vibration in-process, the mobility of electrolyte is strengthened, under the effect of gravity, electrolyte will move to the soft packet of bottommost of battery, it is more even in order to make electrolyte roll up the infiltration effect of core to the battery, the control battery is soft for package constantly overturns at the vibration in-process, consequently, electrolyte is rolling up the core for the battery relative flow direction and changing constantly, thereby avoided electrolyte single direction gathering in the soft packet of battery and the inhomogeneous problem of infiltrating to the core is rolled up to the battery that causes, guaranteed the homogeneity of infiltrating to the core is rolled up to the battery when improving infiltration efficiency.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A cell winding method is characterized by comprising the following steps:
fixing the end part of the winding core belt body on a winding piece of the battery cell winding equipment;
controlling the winding piece to rotate to enable the winding core belt body to be wound on the winding piece to form a winding semi-finished product;
arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products, and fixing the relative position relationship between the strip-shaped partition plates and the winding semi-finished products so as to enable the winding core belt body to be wound on the winding semi-finished products and the strip-shaped partition plates, wherein the length directions of the strip-shaped partition plates are parallel to the axial direction of the winding piece;
controlling the winding piece to stop rotating;
shearing the roll core belt body to obtain a semi-finished product of the battery roll core;
adhering an adhesive tape to the side surface of the battery roll core semi-finished product so as to fix the structure of the battery roll core semi-finished product;
drawing out the winding piece and the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the semi-finished product of the battery roll core to obtain the battery roll core;
the battery cell winding method adopts battery cell winding equipment to wind the winding core belt body, the battery cell winding equipment comprises a battery cell winding device, and the battery cell winding device comprises a rack, a winding mechanism and an inserting plate mechanism; the winding mechanism comprises a winding piece, a first rotating piece and a first driving piece, the first driving piece is connected with the rack, the power output end of the first driving piece is connected with the first rotating piece, the first driving piece is used for driving the first rotating piece to rotate, the first rotating piece is connected with the winding piece, and the rotating central shaft of the first rotating piece is overlapped with the central shaft of the winding piece; the plate inserting mechanism comprises a strip-shaped partition plate, a sliding adjusting piece and a first telescopic piece, the first telescopic piece is connected with the first rotating piece, the sliding adjusting piece comprises a connecting block and a sliding block, the telescopic end of the first telescopic piece is connected with the connecting block, the first telescopic piece is used for driving the connecting block to move axially along the winding piece, a sliding groove is formed in the connecting block and is formed in the radial direction of the winding piece, the sliding block is arranged in the sliding groove in a sliding mode so that the sliding block is connected with the connecting block in a sliding mode, the sliding block is connected with the strip-shaped partition plate, and the length direction of the strip-shaped partition plate is parallel to the axial direction of the winding piece.
2. The cell winding method according to claim 1, wherein the winding thickness of the winding semi-finished product is greater than or equal to one third of the winding thickness of the battery winding core, and the winding thickness of the winding semi-finished product is less than or equal to two thirds of the winding thickness of the battery winding core.
3. The cell winding method according to claim 1, wherein the cross section of the strip-shaped separator is in a sector ring shape; the sliding adjusting piece further comprises a screw rod and a knob, a through hole is formed in the connecting block, the through hole is communicated with the end portion of the winding piece, the sliding block is provided with a threaded hole, the axial direction of the screw rod is parallel to the length direction of the sliding groove, the screw rod sequentially penetrates through the through hole and the threaded hole, so that the screw rod is rotatably connected with the connecting block and is in threaded connection with the sliding block, the knob is located on the outer side of the connecting block, and the end portion of the winding piece is far away from the screw rod and is connected with the knob.
4. The cell winding method according to claim 1, wherein the step of extracting the winding member and the strip-shaped separator comprises:
withdrawing the winding member;
and drawing out the strip-shaped partition plate to separate the winding piece and the strip-shaped partition plate from the battery roll core semi-finished product.
5. The cell winding method according to claim 1, wherein the step of controlling the winding member to rotate specifically comprises:
controlling the winding piece to rotate for the first time;
after the step of controlling the winding member to rotate for the first time and before the step of arranging the strip-shaped partition board on the side surface of the winding semi-finished product, the cell winding method further comprises the following steps:
controlling the winding piece to stop rotating for the first time;
the step of arranging a strip-shaped partition plate on the side surface of the winding semi-finished product comprises the following steps:
arranging strip-shaped partition plates on the side surfaces of the winding semi-finished products;
controlling the winding piece to rotate for the second time;
the step of controlling the winding piece to stop rotating specifically comprises the following steps: and controlling the winding piece to stop rotating for the second time.
6. The cell winding method according to claim 5, wherein in the step of controlling the winding member to rotate for the first time, the rotation speed of the winding member is a first rotation speed, and in the step of controlling the winding member to rotate for the second time, the rotation speed of the winding member is a second rotation speed, and the first rotation speed is greater than the second rotation speed.
7. The cell winding method according to claim 1, wherein the length of the strip-shaped separator is greater than the width of the winding core tape body.
8. The cell winding method according to claim 7, wherein in the step of arranging a strip-shaped separator on the side surface of the winding semi-finished product, an end surface of one end of the strip-shaped separator is flush with an end surface of one end of the winding semi-finished product.
9. The cell winding method according to claim 1, wherein in the step of controlling the winding member to rotate, an end surface of one end of the winding member is made flush with an end surface of one end of the winding semi-finished product.
10. A battery preparation method is characterized in that: the battery preparation method comprises the cell winding method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011547237.3A CN112670599B (en) | 2020-12-23 | 2020-12-23 | Battery cell winding method and battery preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011547237.3A CN112670599B (en) | 2020-12-23 | 2020-12-23 | Battery cell winding method and battery preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112670599A CN112670599A (en) | 2021-04-16 |
| CN112670599B true CN112670599B (en) | 2022-11-22 |
Family
ID=75408258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011547237.3A Active CN112670599B (en) | 2020-12-23 | 2020-12-23 | Battery cell winding method and battery preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112670599B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115911504B (en) * | 2023-01-05 | 2023-05-09 | 河南锂动电源有限公司 | Winding device for soft package battery winding core |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003157888A (en) * | 2001-11-26 | 2003-05-30 | Toshiba Corp | Plate-like secondary battery and method of manufacture |
| CN108736073A (en) * | 2018-07-27 | 2018-11-02 | 东莞市安洋智能科技有限公司 | A kind of coaxial two-fold needle winding device and winding method of winding rectangular cell |
| CN108899569A (en) * | 2018-06-11 | 2018-11-27 | 深圳市诚捷智能装备股份有限公司 | A kind of inserting piece device and cell winding device of anti-battery core deformation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5708462B2 (en) * | 2011-12-06 | 2015-04-30 | トヨタ自動車株式会社 | Battery manufacturing method |
| CN104979582A (en) * | 2015-05-27 | 2015-10-14 | 深圳市动力聚能科技有限公司 | Low-deformation rolling type flexible package lithium-ion battery and production method thereof |
| CN104993176A (en) * | 2015-07-27 | 2015-10-21 | 湖北宇隆新能源有限公司 | Winding type lithium ion electric core body and preparation method thereof |
| CN208284580U (en) * | 2018-05-15 | 2018-12-25 | 贵州贵安阳光新能源科技有限公司 | A kind of anti-deformation soft-package battery core |
| CN109509917B (en) * | 2018-11-28 | 2022-07-01 | 惠州锂威新能源科技有限公司 | Winding process of battery cell |
-
2020
- 2020-12-23 CN CN202011547237.3A patent/CN112670599B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003157888A (en) * | 2001-11-26 | 2003-05-30 | Toshiba Corp | Plate-like secondary battery and method of manufacture |
| CN108899569A (en) * | 2018-06-11 | 2018-11-27 | 深圳市诚捷智能装备股份有限公司 | A kind of inserting piece device and cell winding device of anti-battery core deformation |
| CN108736073A (en) * | 2018-07-27 | 2018-11-02 | 东莞市安洋智能科技有限公司 | A kind of coaxial two-fold needle winding device and winding method of winding rectangular cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112670599A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5439488A (en) | Apparatus for making an electrical energy storage device | |
| KR100996123B1 (en) | An architecture for a device for winding an electric energy storage assembly | |
| CN106532134B (en) | Quadrate lithium battery laminating machine and lamination process | |
| CN112670599B (en) | Battery cell winding method and battery preparation method | |
| US8119190B2 (en) | Method for applying electrode mixture paste and application apparatus | |
| CN106848116B (en) | Automatic encapsulation production line for aluminum plastic film of special-shaped battery and encapsulation process thereof | |
| CN106532129B (en) | Lithium cell laminating machine and lamination process | |
| CN106602148B (en) | soft package lithium battery core and manufacturing process thereof | |
| CN108808145B (en) | Soft packet of lithium cell formation air exhaust device | |
| CN102347506B (en) | Manufacturing device for winding element | |
| JP2002298924A (en) | Secondary battery, and method and device for manufacturing secondary battery | |
| CN103633377A (en) | Winding device | |
| CN106711378B (en) | The continuous lamination production line of three diaphragms for lithium battery manufacture | |
| CN106129514B (en) | Pole piece balled scrap around and collection device | |
| CN115692821B (en) | Heat insulation cotton packaging mechanism of power battery | |
| CN112896680B (en) | Method for manufacturing and forming high-polymer waterproof coiled material | |
| CN217498125U (en) | Film feeding device for film wrapping equipment | |
| CN107053320A (en) | A kind of three axle extra thin copper foil cutting machines and its cutting method | |
| CN207441887U (en) | A kind of Special-shaped battery aluminum plastic film automatic sticking patch device | |
| CN114614066A (en) | Battery winding method and device | |
| CN205985230U (en) | Manufacturing device for single electrode assembly of winding type laminated battery | |
| JPH11297304A (en) | Electrolyte filling method and device for battery | |
| CN214152985U (en) | Battery cell winding device and battery cell winding equipment | |
| CN211788674U (en) | Take condenser winder of outsourcing | |
| CN207158425U (en) | A kind of medical proof fabric sutomatic winding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |