WO2020134543A1 - 一种具有直驱卷针组件的卷绕装置 - Google Patents

一种具有直驱卷针组件的卷绕装置 Download PDF

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Publication number
WO2020134543A1
WO2020134543A1 PCT/CN2019/114708 CN2019114708W WO2020134543A1 WO 2020134543 A1 WO2020134543 A1 WO 2020134543A1 CN 2019114708 W CN2019114708 W CN 2019114708W WO 2020134543 A1 WO2020134543 A1 WO 2020134543A1
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WIPO (PCT)
Prior art keywords
winding
needle assembly
winding needle
winding device
direct
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PCT/CN2019/114708
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English (en)
French (fr)
Inventor
文二龙
邱毅
万志永
杨永忠
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苏州杰锐思智能科技股份有限公司
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Priority claimed from CN201811653709.6A external-priority patent/CN109802185B/zh
Priority claimed from CN201822268585.1U external-priority patent/CN209487652U/zh
Application filed by 苏州杰锐思智能科技股份有限公司 filed Critical 苏州杰锐思智能科技股份有限公司
Priority to JP2021600064U priority Critical patent/JP3234599U/ja
Publication of WO2020134543A1 publication Critical patent/WO2020134543A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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

Definitions

  • the invention relates to the technical field of automatic winding equipment for lithium batteries, in particular to a winding device with a direct-drive winding needle assembly.
  • the material tape is wound by the rotating movement of the winding needle to form the cell.
  • a double needle or three needle winding structure has appeared.
  • the three-needle winding device is equipped with three pairs of winding needles, the positive and negative electrodes and the separator are sent to the winding needle by the robot, one station realizes the winding, the second station sticks the anti-loosening tape, and the three station Automatic needle pulling and unloading, three winding needles are circulated in three stations, respectively, to realize the winding, stick the anti-loosening tape, pull the needle and unload, and work cyclically to achieve the function.
  • the Chinese invention patent with authorization publication number CN208014837U discloses a direct-drive winding device with an extraction function (as shown in FIG. 1), which includes a winding needle, a drive shaft, and a direct drive that provides power to the drive shaft
  • the motor; the direct drive motor is fixedly connected to the follower disk, and it has a middle hole structure, and the drive shaft is penetrated in the middle hole.
  • the drive shaft is set as a spline shaft, and accordingly, a bite sleeve that is engaged with the above spline shaft and driven by a direct drive motor is provided; in order to make the winding needle have an axial movement amount relative to the direct drive motor to facilitate
  • the electric core is drawn away, so that the fit between the spline on the spline shaft and the key groove provided on the bite sleeve is set as a clearance fit form, so as to facilitate relative sliding between the two. Therefore, in the actual working process, the "strain" phenomenon inevitably occurs when the spline slides relative to the key slot, which affects the accuracy of the core pulling. In addition, the fit gap between the spline and the key slot will affect the direct drive. The transmission accuracy and stability of the motor are affected. Therefore, technicians are urgently required to solve the above problems.
  • the technical problem to be solved by the present invention is to provide a winding device with a direct-drive winding needle assembly having a simple structural design, a small overall volume, and high transmission accuracy and stability.
  • the present invention relates to a winding device with a direct-drive winding needle assembly, which includes:
  • the winding needle assembly winds the battery material tape by its own rotary motion to form a battery cell
  • the first follower disk and the second follower disk that perform rotational movement relative to the above-mentioned winding device body and are synchronized in motion are respectively provided at both ends of the winding device body;
  • the needle roller assembly is driven by the motor to rotate, and there is no axial displacement relative to the motor; the second follower plate is provided with a through hole for the needle roller assembly to pass through, and under the action of the reciprocating power source
  • the motor and the needle winding assembly perform synchronous axial reciprocating movement relative to the main body of the winding device, thereby completing the blanking of the battery core.
  • the winding needle assembly includes a winding needle, a winding needle seat fixing the winding needle, and a transition force transmission shaft that provides rotational power for the winding needle seat.
  • the transition force transmission shaft is driven by the motor rotor.
  • the aforementioned winding needle assembly further includes a locking sleeve.
  • a shaft shoulder and a threaded section at the rear end thereof for adapting the locking sleeve are provided on the transition force transmission shaft. The locking sleeve moves relative to the shaft shoulder until the transition shaft and the rotor are locked for synchronous rotation.
  • the winding needle assembly further includes a first bearing group and a second bearing group that are sleeved on the transition force transmission shaft and are spaced apart, and a first support seat that supports the first bearing group and the second bearing group And the second support.
  • the first support base and the second support base are respectively fixed to the ends of the motor body.
  • a through hole is opened on the winding needle seat for inserting the circumferential limit pin.
  • a constricted neck portion is provided on the winding needle seat for the locking bolt to bear against, and accordingly, a U-shaped opening for adapting the circumferential limit pin is provided on the transition force transmission shaft, and a Threaded holes that fit the locking bolt.
  • the bottom surface of the constricted portion is inclined, and its cross-sectional area gradually increases in the direction from the winding functional portion of the winding needle to the winding needle holder.
  • the above-mentioned winding device with a direct-drive winding needle assembly further includes a clamping part, the drive of which is fixed to the motor, and accordingly, the reciprocating power source includes a reciprocating power source adapted to the clamping part, which reciprocates along the axial direction Moving clamping device.
  • the clamping device includes a clamping fixed part, a clamping movable part, and a cylinder that drives the clamping movable part to rotate, thereby driving the motor and the needle winding assembly to perform axial movement as a whole.
  • the winding device further includes a guide post. Both ends of the guide post are fixed to the first follower disc and the second follower disc, respectively. On both sides of the motor body, guide sleeves matching the above-mentioned guide posts are provided.
  • the winding needle assembly is directly connected to the motor, eliminating the spline and keyway clearance cooperation form that makes the winding needle axially reciprocate relative to the motor.
  • the motor is relatively
  • the follower disk can move freely along its axial direction, and directly drives the motor and the needle winding assembly to perform synchronous axial reciprocating motion through the reciprocating power source.
  • the structural design of the winding device is greatly simplified, the manufacturing cost is reduced, and the stability and rotation accuracy of the movement of the winding needle assembly are improved, thereby improving the quality of the winding core and the accuracy of core pulling.
  • FIG. 1 is a schematic structural diagram of a direct drive winding device in the prior art.
  • FIG. 2 is a schematic structural view of a winding device with a direct-drive winding needle assembly in the present invention.
  • FIG 3 is an assembly diagram of the winding device body, the first follower disk, and the second follower disk in the winding device with a direct-drive winding needle assembly of the present invention.
  • FIG. 4 is a schematic diagram of the assembly of the winding needle assembly and the motor in the winding device with a direct-drive winding needle assembly of the present invention.
  • Fig. 5 is an assembly schematic view of the winding needle assembly in the winding device having the direct-drive winding needle assembly of the present invention.
  • FIG. 6 is a schematic structural view of a winding needle base in the winding needle assembly of the present invention.
  • FIG. 7 is a schematic structural view of the transition force transmission shaft in the winding needle assembly of the present invention.
  • FIG. 8 is a schematic diagram of the assembly of the transition force transmission shaft and the motor in the winding device with a direct-drive winding needle assembly of the present invention.
  • FIG. 9 is a schematic diagram of the axial movement guide of the motor in the winding needle assembly of the present invention.
  • FIG. 10 is a schematic structural view of the reciprocating power source in the winding needle assembly of the present invention.
  • FIG. 11 is a schematic diagram of the reciprocating power source driving motor and the needle roller assembly in the needle roller assembly of the present invention as a whole moving.
  • FIG. 2 shows a schematic structural view of a winding device with a direct-drive winding needle assembly according to the present invention.
  • the winding device body 1, first follower disc 2, and second The follower disc 3, the needle winding assembly 4, the motor 5, the reciprocating power source 6 and the like are composed of several parts.
  • the main body 1 of the winding device includes a left bottom plate, a right bottom plate, and a supporting column provided between the two to play a supporting role (As shown in Figure 3).
  • the first follower disc 2 and the second follower disc 3 rotate synchronously, and are respectively rotatably assembled with the left and right bottom plates through bearings.
  • the winding needle assembly 1 winds the battery tape by its own rotational movement to form a battery cell.
  • the second follower plate 3 is provided with a through hole 31 for the winding needle assembly 4 to pass through, and under the action of the reciprocating power source 6, the motor 5 and the winding needle assembly 4 perform synchronous axial reciprocation relative to the winding device body 1 Movement to complete the blanking of the battery core, and then in the actual core winding process, the winding needle assembly 4 has never passed the first follower disc 2 (that is, there is no need to open a through hole in the first follower disc 2).
  • the structure design form of the winding device is greatly simplified, and the manufacturing cost is reduced.
  • the winding needle assembly 1 and the motor 5 are directly connected, eliminating the spline and keyway clearance cooperation forms that make the winding needle axially reciprocate relative to the motor 5
  • the motor 5 can move freely in the axial direction relative to the second follower plate 3, and the motor 5 and the needle winding assembly 4 are directly driven by the reciprocating power source 6 to perform synchronous axial reciprocating motion, thereby improving the winding needle
  • the stability and rotation accuracy of the component 4 itself improves the quality of the winding core and the accuracy of core pulling.
  • the reciprocating power source 6 may preferably be a screw drive mechanism driven by a motor, and of course, a linear motor or a pneumatic cylinder may also be used.
  • the above-mentioned motor may be preferably a direct drive motor, which is composed of a motor body 51, a motor rotor 52, a motor stator 53, and the like.
  • a direct drive motor which is composed of a motor body 51, a motor rotor 52, a motor stator 53, and the like.
  • the winding needle assembly 4 is composed of a winding needle 41, a winding needle seat 42, and a transition force transmission shaft 43 (as shown in FIG. 4), where, The transition force transmission shaft 43 is driven by the motor rotor 52, and further drives the winding needle base 42 to rotate.
  • the assembly of the transition force transmission shaft 43 and the winding needle base 42 can be performed by referring to the following manner: a U-shaped opening 433 is provided on the transition force transmission shaft 43 for adapting to the circumferential limit pin, and correspondingly, on the winding needle base 42 A through hole 421 is opened, and the circumferential limit of the transition force transmission shaft 43 and the winding needle base 42 is achieved by inserting a limit pin; a certain distance from the U-shaped opening 433, a threaded hole is opened in the transition force transmission shaft 43, and accordingly ,
  • the neck portion 422 is provided on the winding needle base 42, the bolt is screwed into the threaded hole, and the end portion of the bolt is tightened on the neck portion 422, thereby achieving the axial limitation of the winding needle base 42 relative to the transition force transmission shaft 43 Bits (as shown in Figures 4 and 5).
  • the unilateral gap between the limit pin and the U-shaped opening 433 needs to be appropriately selected according to the process accuracy requirements to prevent the circumferential movable amount from exceeding the tolerance.
  • the bottom surface of the constricted neck 422 is inclined, and its cross-sectional area gradually increases in the direction from the winding functional portion of the winding needle 41 to the winding base 42, so that the constricted neck 422 has a self-locking effect with respect to the bolt, and It is ensured that the winding needle base 42 has a reliable axial positioning relative to the transition force transmission shaft 43.
  • the inclination of the bottom surface of the neck portion 422 is not less than 1:10.
  • a shoulder 431 is provided on the transition force transmission shaft 43.
  • a threaded section 432 is provided at the tail of the transition force transmission shaft 43, and a locking sleeve 7 is sleeved on the thread section 432, and the transition force transmission shaft 43 is realized by tightening the locking sleeve 7 Reliable fixation (as shown in Figure 8).
  • bearing sets are provided near the left and right end portions of the transition force transmission shaft 43.
  • they are respectively named ⁇ bearing set 8 and second bearing set 9.
  • the first bearing group 8 is supported by a first support base 10 provided on the left side of the motor body 51
  • the second bearing 9 group is supported by a second support base 11 provided on the right side of the motor body 51.
  • a clamping portion 12 that drives the entire axial movement of the winding needle assembly 4 is fixed on the motor 5.
  • the reciprocating power source 6 is provided with the clamping portion 12-suitable clamping device 61.
  • the clamping device 61 includes a clamping fixing portion 611 and a clamping movable portion 612, wherein the clamping movable portion 612 is driven by the air cylinder 613 (as shown in FIGS. 10 and 11).
  • a guide post 13 is fixedly arranged between the first follower disc 2 and the second follower disc 3, and accordingly, a guide sleeve 14 adapted to the above guide post 13 is provided on both sides of the motor body 51 (as shown in FIG. 9 Shown).
  • a plurality of graphite strips (not shown in the figure) can be evenly inlaid circumferentially on the side wall of the guide sleeve 14 , And the graphite strip slightly exceeds the side wall, it is suitable to be controlled within 0.2mm.
  • the guide bush 14 may be replaced with a linear bearing according to actual conditions.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

本发明涉及锂电池自动化卷绕设备技术领域，尤其是一种具有直驱卷针组件的卷绕装置，其由卷绕装置本体、卷针组件、第一随动盘以及第二随动盘等几部分构成，其中，卷针组件由电机进行驱动发生旋转运动，且其相对于电机不发生轴向位移。在第二随动盘开设有穿越孔，以供卷针组件穿过，且在往复动力源的作用下上述电机以及卷针组件相对于卷绕装置本体作同步轴向往复运动。这样一来，从而取消了传统上使得卷针相对于电机进行轴向往复运动的花键、键槽间隙配合形式，另外，电机相对于随动盘可沿其轴向方向进行自由运动，且通过往复动力源直接驱动电机以及卷针组件作同步轴向往复运动，进而提高了卷针组件自身运动的平稳性及旋转精度。

Description

一种具有直驱卷针组件的卷绕装置 技术领域
本发明涉及锂电池自动化卷绕设备技术领域，尤其是一种具有直驱卷针组件的卷绕装置。
背景技术
在锂电池电芯的制作过程中，通过卷针的旋转运动卷绕料带以形成电芯。为了提高卷绕效率，出现了双针或三针卷绕结构形式。以三针卷绕装置为例，其上装有三对卷针，正负极片和隔离膜由机械手送到卷针上，一工位实现卷绕，二工位贴终止防松胶带，三工位自动拔针下料，三根卷针分别在三个工位中循环，分别实现卷绕，贴终止防松胶带，拔针下料，循环工作，以实现功能。
授权公开号为CN 208014837U的中国发明专利公开了一种具有抽离功能的直驱卷绕装置(如图1中所示)，其包括卷针、驱动轴以及为该驱动轴提供动力的直驱电机；直驱电机与随动盘固定连接，且其具有中孔结构，且上述驱动轴穿设于该中孔内。驱动轴设置为花键轴，相应地，设置有与上述花键轴相咬合、且由直驱电机进行驱动的咬合轴套；为了使得卷针相对于直驱电机具有轴向运动量，以便于进行电芯抽离，从而将上述花键轴上的花键与设置于咬合轴套上的键槽之间的配合设置为间隙配合形式，以利于两者发生相对滑动。从而，在实际工作过程中，花键相对于键槽发生相对滑动时不可避免地发生“憋力”现象，进而影响抽芯的准确性，另外，花键与键槽之间的配合间隙会对直驱电机的传动精度及平稳性造成影响。因而，亟待技术人员解决上述问题。
发明内容
本发明要解决的技术问题是提供一种结构设计简单，整体体积小，传动精度及平稳性较高的具有直驱卷针组件的卷绕装置。
为了解决上述技术问题，本发明涉及了一种具有直驱卷针组件的卷绕装置，其包括：
卷针组件，通过其自身的旋转运动来卷绕电池料带以形成电芯；
卷绕装置本体；
相对于上述卷绕装置本体作旋转运动、且运动同步的第一随动盘以及第二随动盘，其分别设置于卷绕装置本体的两端部；
卷针组件由电机进行驱动发生旋转运动，且其相对于电机不发生轴向位移；在第二随动盘开设有穿越孔，以供卷针组件穿过，且在往复动力源的作用下上述电机以及卷针组件相对于卷绕装置本体作同步轴向往复运动，进而完成电芯的下料。
进一步的，卷针组件包括卷针、对该卷针进行固定的卷针座以及为上述卷针座提供旋转动力的过渡传力轴。过渡传力轴由电机转子进行驱动。
更进一步的，上述卷针组件还包括锁紧套。在过渡传力轴上设置有轴肩和位于其尾端的、用来适配该锁紧套的螺纹段。锁紧套相对于轴肩发生相向运动，直至过渡传力轴与转子锁紧，进行同步旋转。
更进一步的，上述卷针组件还包括套设于过渡传力轴、且间隔设置的第一轴承组和第二轴承组以及对上述第一轴承组和第二轴承组进行支撑的第一支撑座和第二支撑座。第一支撑座以及第二支撑座分别固定于电机本体的端部。
进一步的，在卷针座上开设有通孔，用来穿插周向限位销。在卷针座上设置有缩颈部，用来供锁紧螺栓顶靠，相应地，在过渡传力轴上开设有用来适配周向限位销的U形开口，且再其上开设有与锁紧螺栓相适配的螺纹孔。
更进一步的，缩颈部的底面倾斜设置，且沿着卷针的卷绕功能部至卷针座的方向其截面面积逐渐增大。
进一步的，上述具有直驱卷针组件的卷绕装置还包括夹持部，其驱与电机相固定，相应在，往复动力源包括与夹持部相适配的、沿着轴向 方向进行往复运动的夹紧装置。
更进一步的，夹紧装置包括夹紧固定部、夹紧活动部以及驱动该夹紧活动部进行转动的气缸，进而带动电机以及卷针组件整体进行轴向运动。
更进一步的，卷绕装置还包括导向柱。导向柱的两端部分别与第一随动盘和所述第二随动盘相固定。在电机本体的两侧设置有与上述导向柱相适配的导向套。
相较于传统设计方案，通过采用上述技术方案进行设置使得卷针组件与电机进行直连，取消了使得卷针相对于电机进行轴向往复运动的花键、键槽间隙配合形式，另外，电机相对于随动盘可沿其轴向方向进行自由运动，且通过往复动力源直接驱动电机以及卷针组件作同步轴向往复运动。这样一来，大大简化了卷绕装置的结构设计形式，降低了制造成本，且提高了卷针组件自身运动的平稳性及旋转精度，进而提高了卷芯质量及抽芯精度。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术中直驱卷绕装置的结构示意图。
图2是本发明中具有直驱卷针组件的卷绕装置的结构示意图。
图3是本发明具有直驱卷针组件的卷绕装置中卷绕装置本体与第一随动盘以及第二随动盘的装配示意图。
图4是本发明具有直驱卷针组件的卷绕装置中卷针组件与电机的装配示意图。
图5是本发明具有直驱卷针组件的卷绕装置中卷针组件的装配示意 图。
图6是本发明卷针组件中卷针座的结构示意图。
图7是本发明卷针组件中过渡传力轴的结构示意图。
图8是本发明具有直驱卷针组件的卷绕装置中过渡传力轴与电机的装配示意图。
图9是本发明卷针组件中电机的轴向运动导向示意图。
图10是本发明卷针组件中往复动力源的结构示意图。
图11是本发明卷针组件中往复动力源驱动电机及卷针组件整体进行运动的示意图。
1-卷绕装置本体；2-第一随动盘；3-第二随动盘；31-穿越孔；4-卷针组件；41-卷针；42-卷针座；421-通孔；422-缩颈部；43-过渡传力轴；431-轴肩；432-螺纹段；433-U形开口；434-螺纹孔；5-电机；51-电机本体；52-电机转子；53-电机定子；6-往复动力源；61-夹紧装置；611-夹紧固定部；612-夹紧活动部；613-气缸；7-锁紧套；8-第一轴承组；9-第二轴承组；10-第一支撑座；11-第二支撑座；12-夹持部；13-导向柱；14-导向套。
具体实施方式
在本发明的描述中，需要理解的是，术语“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
下面结合附图对本发明作出详细的说明，图2示出了本发明中具有直驱卷针组件的卷绕装置的结构示意图，其由卷绕装置本体1、第一随动盘2、第二随动盘3、卷针组件4、电机5、往复动力源6等几部分构成，其中，卷绕装置本体1包括左底板、右底板以及设置于两者之间，起支撑作用的支撑柱(如图3中所示)。第一随动盘2和第二随动盘3进行同步转动，且分别通过轴承可自由转动地与上述左底板、右底板进行装配。 在电机5的驱动下，卷针组件1通过其自身的旋转运动来卷绕电池料带以形成电芯。在第二随动盘3开设有穿越孔31，以供卷针组件4穿越，且在往复动力源6的作用下上述电机5以及卷针组件4相对于卷绕装置本体1作同步轴向往复运动，从而完成电芯的下料，进而在实际卷芯过程中，卷针组件4始终未越过第一随动盘2(即无须在第一随动盘2开设穿越孔)，这样一来，大大简化了卷绕装置的结构设计形式，降低了制造成本。另外，相较于传统设计方案，通过采用上述技术方案进行设置使得卷针组件1与电机5进行直连，取消了使得卷针相对于电机5进行轴向往复运动的花键、键槽间隙配合形式，另外，电机5相对于第二随动盘3可沿其轴向方向进行自由运动，且通过往复动力源6直接驱动电机5以及卷针组件4整体作同步轴向往复运动，提高了卷针组件4自身运动的平稳性及旋转精度，进而提高了卷芯质量及抽芯精度。
上述往复动力源6可以优选由电机进行驱动的螺杆传动机构，当然也可选用直线电机或气压缸等。
上述电机可以优选直驱电机，其由电机本体51、电机转子52以及电机定子53等几部分构成。当然，也可以选择其他不同类型的电机，如伺服电机等。
作为上述具有直驱卷针组件的卷绕装置的进一步优化，卷针组件4由卷针41、卷针座42以及过渡传力轴43等几部分构成(如图4中所示)，其中，过渡传力轴43由电机转子52进行驱动，进而驱动卷针座42作旋转运动。过渡传力轴43与卷针座42的装配可以参照如下方式进行：在过渡传力轴43上开设有用来适配周向限位销的U形开口433，相应地，在卷针座42上开设有通孔421，通过插入限位销实现过渡传力轴43与卷针座42的周向限位；相距上述U形开口433一定距离，在过渡传力轴43上开设螺纹孔，相应地，在卷针座42上设置有缩颈部422，螺栓旋入上述螺纹孔，且该螺栓的端部顶紧缩颈部422，从而实现卷针座42相对于过渡传力轴43的轴向限位(如图4、图5中所示)。
需要特别说明的是，在实际装配过程中，需根据工艺精度要求适当 选配限位销与U形开口433之间的单边间隙，以防止周向可活动量超差。缩颈部422的底面倾斜设置，且沿着卷针41的卷绕功能部至卷针座42的方向其截面面积逐渐增大，从而使得缩颈部422相对于螺栓具有自锁紧作用，进而保证卷针座42相对于过渡传力轴43具有可靠的轴向定位。根据具体实施结果可知，上述缩颈部422的底面倾斜度不小于1∶10。
再者，为了实现过渡传力轴43与电机转子52的运动同步性，可以参照如下方式进行设置：如图6、图7中所示，在过渡传力轴43上设置有轴肩431，用来顶靠电子转子52的左端面；在过渡传力轴43的尾部设置有螺纹段432，锁紧套7套设于该螺纹段432，通过旋紧锁紧套7来实现过渡传力轴43的可靠固定(如图8中所示)。更进一步的，为了提高过渡传力轴43旋转的平衡性，防止偏摆现象发生，在靠近过渡传力轴43左、右端部的位置均设置有轴承组，为了便于进行区分，分别命名为第一轴承组8和第二轴承组9。第一轴承组8由设置于电机本体51左侧的第一支撑座10进行支撑，第二轴承9组由设置于电机本体51右侧的第二支撑座11进行支撑。
再者，为了便于抽芯操作，还在电机5上固定有驱使其以及卷针组件4整体进行轴向运动的夹持部12，相应在，在往复动力源6上设置有与上述夹持部12相适配的夹紧装置61。夹紧装置61包括夹紧固定部611、夹紧活动部612，其中夹紧活动部612由气缸613进行驱动(如图10、图11中所示)。
最后，为了实现第一随动盘2与第二随动盘3的旋转同步性，且使得卷针组件4及电机5具有稳定、可靠的轴向运动性，还可以通过以下方式进行实现：在第一随动盘2和第二随动盘3之间固定设置导向柱13，相应地，在电机本体51的两侧设置有与上述导向柱13相适配的导向套14(如图9中所示)。更进一步的，为了降低导向柱13与导向套14的相对磨损量，提高两者的使用寿命，可以在导向套14的侧壁上周向均匀镶嵌有多条石墨条(图中未示出)，且石墨条略微超出侧壁，控制在0.2mm以内为宜。另外，上述导向套14也可以根据实际情况使用直线轴承进行 替换。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其他实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是需要符合与本文所公开的原理和新颖特点相一致的最宽范围。

Claims (9)

  1. 一种具有直驱卷针组件的卷绕装置，包括：
    卷针组件，通过其自身的旋转运动来卷绕电池料带以形成电芯；
    卷绕装置本体；
    相对于所述卷绕装置本体作旋转运动、且运动同步的第一随动盘以及第二随动盘，其分别设置于所述卷绕装置本体的两端部；
    其特征在于，所述卷针组件由电机进行驱动发生旋转运动，且其相对于所述电机不发生轴向位移；所述第二随动盘开设有穿越孔，以供所述卷针组件穿过，且在往复动力源的作用下所述电机以及所述卷针组件相对于所述卷绕装置本体作同步轴向往复运动，进而完成所述电芯的下料。
  2. 根据权利要求1所述的具有直驱卷针组件的卷绕装置，其特征在于，所述卷针组件包括卷针、对所述卷针进行固定的卷针座以及为所述卷针座提供旋转动力的过渡传力轴；所述过渡传力轴由所述电机转子进行驱动。
  3. 根据权利要求2所述的具有直驱卷针组件的卷绕装置，其特征在于，还包括锁紧套；在所述过渡传力轴上设置有轴肩和位于其尾端的、用来适配所述锁紧套的螺纹段；所述锁紧套相对于所述轴肩发生相向运动，直至所述过渡传力轴与所述转子锁紧，进行同步旋转。
  4. 根据权利要求3所述的具有直驱卷针组件的卷绕装置，其特征在于，还包括套设于所述过渡传力轴、且间隔设置的第一轴承组和第二轴承组以及对所述第一轴承组和所述第二轴承组进行支撑的第一支撑座和第二支撑座；所述第一支撑座以及第二支撑座分别固定于所述电机本体的两端部。
  5. 根据权利要求2所述的具有直驱卷针组件的卷绕装置，其特征在于，在所述卷针座上开设有通孔，用来穿插周向限位销；在所述卷针座上设置有缩颈部，用来供锁紧螺栓顶靠；相应地，在所述过渡传力轴上开设有用来适配所述周向限位销的U形开口，且在其上开设有与所述锁紧螺栓相适配的螺纹孔。
  6. 根据权利要求5所述的具有直驱卷针组件的卷绕装置，其特征在于，所述缩颈部的底面倾斜设置，且沿着所述卷针的卷绕功能部至所述卷针座的方向其截面面积逐渐增大。
  7. 根据权利要求1所述的具有直驱卷针组件的卷绕装置，其特征在于，还包括夹持部，其驱与所述电机相固定，相应在，所述往复动力源包括与所述夹持部相适配的、沿着轴向方向进行往复运动的夹紧装置。
  8. 根据权利要求7所述的具有直驱卷针组件的卷绕装置，其特征在于，所述夹紧装置包括夹紧固定部、夹紧活动部以及驱动所述夹紧活动部进行转动的气缸，进而带动所述电机以及卷针组件整体进行轴向运动。
  9. 根据权利要求8所述的具有直驱卷针组件的卷绕装置，其特征在于，所述卷绕装置还包括导向柱，所述导向柱的两端部分别与所述第一随动盘和所述第二随动盘相固定；在所述电机本体的两侧设置有与所述导向柱相适配的导向套。
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