CN107900104A - Electrodes of lithium-ion batteries collector foil shapes calendering device - Google Patents
Electrodes of lithium-ion batteries collector foil shapes calendering device Download PDFInfo
- Publication number
- CN107900104A CN107900104A CN201711268325.8A CN201711268325A CN107900104A CN 107900104 A CN107900104 A CN 107900104A CN 201711268325 A CN201711268325 A CN 201711268325A CN 107900104 A CN107900104 A CN 107900104A
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- CN
- China
- Prior art keywords
- calendering
- roller
- live
- stack
- foil
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to a kind of electrodes of lithium-ion batteries collector foil to shape calendering device, with rack, at a distance of equipped with least a pair of of live-roller in the rack, a pair of calendering rolls are equipped between the live-roller, the live-roller is driven by transmission shaft to be rotated, the transmission roller surface is bonded with corresponding calendering roller surface and drives stack to rotate, rack is equipped with the prefabricating oil cylinder of calendering distortional stress between adjusting stack, the piston rod of the prefabricating oil cylinder is connected with being located at the bearing block of both ends of the drive shaft, or the bearing block with being located at stack both ends is connected.The present invention is adjusted by precompression of the prefabricating oil cylinder for live-roller or stack, when calendering technology is asynchronous calendering, accurate calendaring molding can implement foil by speed difference, change the non-uniform situation of facial disfigurement above and below when the asynchronous calendering of foil deforms, so as to preferably improve the thickness evenness after foil calendering formation, the glacing flatness of calendering foil is significantly improved.
Description
Technical field
The present invention relates to lithium battery manufacturing technology field, especially a kind of electrodes of lithium-ion batteries collector foil shaping pressure
Prolong device.
Background technology
In numerous energy storage technologies, lithium ion battery due to energy density it is big, have extended cycle life, light-weight, nothing
The advantages that pollution, it is considered to be high effective portable electrochmical power source of future generation.For lithium ion battery, usually used cathode
Collector is aluminium foil, and negative current collector is copper foil, in order to ensure that collector is required in inside battery stability, the two purity
More than 98%.With the continuous development of lithium power technology, either for the lithium battery of digital product or the battery of electric automobile,
The energy density for being intended to battery is tried one's best height, and the weight of battery is more and more lighter, and main in collector this block is exactly to reduce to collect
The thickness and weight of fluid, intuitively reduces the volume and weight of battery.
Lithium battery copper aluminum foil thickness requirement：As lithium battery was grown rapidly in recent years, lithium battery collector develops
Quickly.Positive pole aluminium foil is reduced to 14um by 16um several years ago, then to 12um, many cell production companies have been measured now
Production uses the aluminium foil of 10um, or even uses 8um.And anode copper foil, since copper foil pliability itself is preferable, its thickness is by before
12um is reduced to 10um, then to 8um, and to there is percentage of batteries producer volume production 6um at present, and part of the manufacturer is developing
5um/4um is possible to what is used.
Key prepared by lithium battery collector foil is calendaring molding, when in the prior art, collector foil is rolled
During into ultrathin, since plastic flow deformation occurs for foil, the thin preparation defect in thick middle, both sides, this thickness can be formed
It is uneven that non-uniform defect is easy to cause electrode coating contact resistance, and then prevents electrode capacity from uniformly discharging；It is meanwhile thick
It is inconsistent to spend uneven also initiation electrode coating adhesion strength, makes electrode coating charge and discharge circulation life serious unbalance, Jin Erjia
The decay of fast battery capacity.
The content of the invention
The technical problem to be solved in the present invention is：In order to overcome deficiency in the prior art, the present invention provides one kind can be more
Improve well collector foil calendering glacing flatness, reduce transverse gage inhomogeneities electrodes of lithium-ion batteries collector foil into
Shape calendering device.
The technical solution adopted by the present invention to solve the technical problems is：A kind of electrodes of lithium-ion batteries collector foil into
Shape calendering device, has rack, at least a pair of of live-roller is apart equipped with the rack, is equipped between the live-roller
A pair of calendering rolls, the live-roller is driven by transmission shaft to be rotated, the transmission roller surface and corresponding calendering roller surface patch
Close and drive stack to rotate, rack is equipped with the prefabricating oil cylinder of calendering distortional stress between adjusting stack, the pre- pressure oil
The piston rod of cylinder is connected with being located at the bearing block of both ends of the drive shaft or the bearing block with being located at stack both ends is connected.
Specifically, as the ratio between the barrel length L and diameter D of stack L/D<When 3.5, stack passes through bearing block and precompressed
Cylinder piston rod is connected, as the ratio between the barrel length L and diameter D of stack L/D >=3.5, live-roller by bearing block with
Prefabricating oil cylinder piston rod is connected, and thus can more preferably improve rolling effect.
For convenience of precompression is adjusted in real time, monitoring bearing block in real time is installed on the prefabricating oil cylinder and bears tension
Pressure sensor, pressure sensor measured signal is transmitted to the control mould being made of On-line gauging system and control pressurer system
Block.
To meet the calendering deformation requirements of different collector foils, the frame upper end is provided with adjusting calendering deformation pressure
The hold-down balancing mechanism of lower amount, the hold-down balancing mechanism are connected with the live-roller on a pair of of live-roller.
The beneficial effects of the invention are as follows：The present invention is adjusted by precompression of the prefabricating oil cylinder for live-roller or stack,
When calendering technology is asynchronous calendering, i.e., when the rotary speed between a pair of calendering rolls has differences, you can by speed difference to paper tinsel
Material implements accurate calendaring molding, and it is non-uniform can to adjust facial disfigurement above and below when the asynchronous calendering of foil deforms for prefabricating oil cylinder at this time
Phenomenon, so as to preferably improve the thickness evenness after foil calendering formation, significantly improves the glacing flatness of calendering foil, is conducive to
Operating efficiency is improved, extends roll working life.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the present invention.
In figure：1. 6. bearing block of rack 2. live-roller, 3. stack, 4. transmission shaft, 5. prefabricating oil cylinder, 7. pressure sensor 8. is pressed
Lower balanced controls
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
As shown in Fig. 1 embodiment during the ratio between barrel length L and diameter D of stack 3 L/D >=3.5.A kind of lithium from
Sub- battery pole piece collector foil shapes calendering device, has rack 1, apart a pair of of transmission is above had in the rack 1
Roller 2, is equipped with a pair of calendering rolls 3 between the live-roller 2, and the live-roller 2 is driven by transmission shaft 4 to be rotated, described
2 surface of live-roller be bonded with corresponding 3 surface of stack and drive stack 3 to rotate, the transmission shaft 4 positioned at 2 both sides of live-roller
On be separately installed be equipped with the bearing block 6 of bearing, 6 position of bearing block that 4 both ends of transmission shaft are corresponded in rack 1 is respectively equipped with tune
Roll the prefabricating oil cylinder 5 of distortional stress, the piston rod of the prefabricating oil cylinder 5 and the bearing block 6 of correspondence position between section stack 3
It is connected.
The pressure sensor 7 that monitoring bearing block 6 in real time bears tension, pressure are installed on the prefabricating oil cylinder 5
7 measured signal of sensor is transmitted to the control module being made of On-line gauging system and control pressurer system.When control module is supervised
When measuring foil calendering thickness centre and uneven both ends, prefabricating oil cylinder 5 applies bearing block 6 certain tension, makes biography
Dynamic roller 2 produces a small amount of pre-bending transverse stress, so as to improve foil calendering distortional stress, makes among foil and two-end thickness tends to one
Cause.
1 upper end of rack is provided with the hold-down balancing mechanism 8 for adjusting calendering deformation drafts, pressure balance
Mechanism 8 is connected with the live-roller 2 on a pair of of live-roller 2.In the present embodiment, hold-down balancing mechanism 8 uses feed screw nut
The kind of drive, the top of rack 1 are provided with decelerating motor, and reducing motor output shaft is connected with leading screw, leading screw bottom connection pressing plate, pressure
Plate both ends are connected with live-roller 2, and nut is fixed in rack 1 to be connected with lead screw transmission.The hold-down balancing mechanism 8 can also use oil
Cylinder or other straight-line motion mechanisms are realized.
Raw material uses electrolysis foil, 12 μm of thickness, 6 μm of calendaring molding thickness.During calendering, the first basis of hold-down balancing mechanism 8
Thickness carries out live-roller 2 drafts adjustment before and after foil shaping, and driving motor transfer of torque power drives up and down to transmission shaft 4
Two live-rollers 2 are rotated with certain linear velocity v, and linear velocity v is driven to stack 3,3 rotating clutch of stack by live-roller 2
Enter to roll foil.
When foil thickness after line thickness monitor system detectio is to calendaring molding, there are thick middle (6.5 μm), both ends are thin
During (5.5 μm) problem, then prefabricating oil cylinder 5 is started by control module and worked, 2 two end axles bearing 6 of live-roller is born tension F
(0.5~0.7MPA) and conduct to the formation pre-bending transverse stress of live-roller 2, being conducted to stack 3 finally by surface contact forms
Pre-bending transverse stress, the centre of stack 3 calendering stress increase, both ends calendering stress is reduced, so that foil calendaring molding thickness
Reach unanimity.Pressure sensor 7 monitors the tension that bearing block 6 is born in real time at the same time, and feeds back to control module, according to foil
Calendering thickness carries out hydraulic bending power and controls output in real time.
In the present invention, bearing block of the prefabricating oil cylinder 5 respectively with 2 both ends of a pair of of live-roller arranged up and down is connected, and works as pressure
When to prolong technique be asynchronous calendering, i.e., the rotary speed between upper bottom calender roll 3 has differences, and foil is implemented by speed difference accurate
Calendaring molding, facial disfigurement non-uniform problem up and down when prefabricating oil cylinder 5 can adjust foil asynchronous calendering deformation at this time.
Especially, if the ratio between barrel length L and diameter D of stack 3 L/D<When 3.5, installed in support stack 3
The bearing block 6 at support shaft both ends is connected with 5 piston rod of prefabricating oil cylinder, prefabricating oil cylinder 5 work caused by pre-bending transverse stress it is straight
Connect and be conducted to stack 3 so that calendering stress increase among stack 3, both ends calendering stress is reduced, so that foil is rolled into
Shape thickness reaches unanimity.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (4)
1. a kind of electrodes of lithium-ion batteries collector foil shapes calendering device, there is rack (1), it is characterized in that：The machine
At a distance of at least a pair of of live-roller (2) is equipped with frame (1), a pair of calendering rolls (3) are equipped between the live-roller (2), it is described
Live-roller (2) driven and rotate by transmission shaft (4), the fitting of the live-roller (2) surface and corresponding stack (3) surface and
Stack (3) rotation is driven, rack (1) is equipped with the prefabricating oil cylinder (5) of calendering distortional stress between adjusting stack (3), institute
The piston rod for stating prefabricating oil cylinder (5) is connected or with being located at stack (3) two with being located at the bearing block (6) at transmission shaft (4) both ends
The bearing block (6) at end is connected.
2. electrodes of lithium-ion batteries collector foil as claimed in claim 1 shapes calendering device, it is characterized in that：The pressure
Prolong the ratio between the barrel length L and diameter D of roller (3) L/D<When 3.5, stack (3) is living by bearing block (6) and prefabricating oil cylinder (5)
Stopper rod is connected, and as the ratio between the barrel length L and diameter D of stack (3) L/D >=3.5, live-roller (2) passes through bearing block (6)
It is connected with prefabricating oil cylinder (5) piston rod.
3. electrodes of lithium-ion batteries collector foil as claimed in claim 2 shapes calendering device, it is characterized in that：Described is pre-
The pressure sensor (7) that monitoring bearing block (6) in real time bears tension, pressure sensor (7) institute are installed on compressing cylinder (5)
Signal transmission is surveyed to the control module being made of On-line gauging system and control pressurer system.
4. electrodes of lithium-ion batteries collector foil as claimed in claim 1 shapes calendering device, it is characterized in that：The machine
Frame (1) upper end is provided with the hold-down balancing mechanism (8) for adjusting calendering deformation drafts, the hold-down balancing mechanism (8) and one
It is connected to the live-roller (2) on live-roller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268325.8A CN107900104A (en) | 2017-12-05 | 2017-12-05 | Electrodes of lithium-ion batteries collector foil shapes calendering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268325.8A CN107900104A (en) | 2017-12-05 | 2017-12-05 | Electrodes of lithium-ion batteries collector foil shapes calendering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107900104A true CN107900104A (en) | 2018-04-13 |
Family
ID=61854504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711268325.8A Pending CN107900104A (en) | 2017-12-05 | 2017-12-05 | Electrodes of lithium-ion batteries collector foil shapes calendering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107900104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700232A (en) * | 2022-04-09 | 2022-07-05 | 深圳市智力昌智能设备有限公司 | Coating, drying and rolling mill |
| CN116274364A (en) * | 2023-04-07 | 2023-06-23 | 广东捷盟智能装备有限公司 | Calendering roller device with compensation pre-bending mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101254509A (en) * | 2008-04-15 | 2008-09-03 | 邢台纳科诺尔极片轧制设备有限公司 | Hydraulic servo battery pole piece rolling mill |
| JP2008264850A (en) * | 2007-04-24 | 2008-11-06 | Honda Motor Co Ltd | Equipment for rolling plate having different thickness |
| CN102189115A (en) * | 2010-03-11 | 2011-09-21 | 上海宝信软件股份有限公司 | Method for switching positive roller and negative roller of working roll |
| CN106180189A (en) * | 2016-07-25 | 2016-12-07 | 广东基泰智能设备有限公司 | A kind of multiple roll calender device |
| CN206334967U (en) * | 2016-12-13 | 2017-07-18 | 邢台朝阳机械制造有限公司 | Mechanical roll-bending device |
| CN207479192U (en) * | 2017-12-05 | 2018-06-12 | 中航锂电技术研究院有限公司 | Electrodes of lithium-ion batteries collector foil shapes calendering device |
-
2017
- 2017-12-05 CN CN201711268325.8A patent/CN107900104A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008264850A (en) * | 2007-04-24 | 2008-11-06 | Honda Motor Co Ltd | Equipment for rolling plate having different thickness |
| CN101254509A (en) * | 2008-04-15 | 2008-09-03 | 邢台纳科诺尔极片轧制设备有限公司 | Hydraulic servo battery pole piece rolling mill |
| CN102189115A (en) * | 2010-03-11 | 2011-09-21 | 上海宝信软件股份有限公司 | Method for switching positive roller and negative roller of working roll |
| CN106180189A (en) * | 2016-07-25 | 2016-12-07 | 广东基泰智能设备有限公司 | A kind of multiple roll calender device |
| CN206334967U (en) * | 2016-12-13 | 2017-07-18 | 邢台朝阳机械制造有限公司 | Mechanical roll-bending device |
| CN207479192U (en) * | 2017-12-05 | 2018-06-12 | 中航锂电技术研究院有限公司 | Electrodes of lithium-ion batteries collector foil shapes calendering device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700232A (en) * | 2022-04-09 | 2022-07-05 | 深圳市智力昌智能设备有限公司 | Coating, drying and rolling mill |
| CN116274364A (en) * | 2023-04-07 | 2023-06-23 | 广东捷盟智能装备有限公司 | Calendering roller device with compensation pre-bending mechanism |
| CN116274364B (en) * | 2023-04-07 | 2024-03-22 | 广东捷盟智能装备股份有限公司 | Calendering roller device with compensation pre-bending mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant after: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Applicant after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant before: Kaibo Energy Technology Co.,Ltd. Applicant before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant after: Kaibo Energy Technology Co.,Ltd. Applicant after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: No.88 Jintan Avenue, Jintan District, Changzhou City, Jiangsu Province Applicant before: CHINA AVIATION LITHIUM BATTERY RESEARCH INSTITUTE Co.,Ltd. Applicant before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220110 Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant after: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Applicant after: Zhongchuangxin Aviation Technology Co.,Ltd. Address before: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Applicant before: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Applicant before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |