CN108682780B

Movatterモバイル変換

Info

Publication number: CN108682780B
Application number: CN201810673091.3A
Authority: CN
Inventors: 高冲; 王晨旭; 程辉
Original assignee: Gotion High Tech Co Ltd
Current assignee: Gotion High Tech Co Ltd
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2020-12-11
Anticipated expiration: 2038-06-26
Also published as: CN108682780A

Abstract

The invention discloses a centrifugal liquid injection device for a lithium battery, which comprises a shell, a liquid supply assembly, a connecting assembly and a centrifugal assembly, wherein the liquid supply assembly, the connecting assembly and the centrifugal assembly are arranged in the shell; the liquid supply assembly comprises a vacuum pump and a liquid injection pump which are respectively communicated with the liquid supply main pipeline, the centrifugal assembly comprises a driving motor and a plurality of battery liquid injection mounting frames hinged with the output shaft of the driving motor, the top of the output shaft of the driving motor is of a tubular structure, and the connecting assembly is used for communicating the liquid supply main pipeline and the top of the output shaft of the driving motor. The invention enables the electrolyte to be thrown into the battery under the action of centrifugal force, accelerates the pole piece infiltration, and is not easy to remain in the electrolyte injection hole, thereby saving the electrolyte wiping procedure and effectively improving the production efficiency.

Description

Translated fromChinese

一种锂电池离心注液装置A lithium battery centrifugal liquid injection device

技术领域technical field

本发明涉及锂电池注液领域，具体是一种锂电池离心注液装置。The invention relates to the field of lithium battery liquid injection, in particular to a lithium battery centrifugal liquid injection device.

背景技术Background technique

在锂离子电池的生产过程中，通常都会向电池内部注入电解液，然后将注液后的电池静置一段时间，以使电解液充分浸润极片，若浸润不充分则可能导致化成界面黑斑，内阻升高，容量减少，直接导致电池的寿命降低。In the production process of lithium-ion batteries, electrolyte is usually injected into the battery, and then the battery after injection is allowed to stand for a period of time, so that the electrolyte can fully infiltrate the pole pieces. If the infiltration is insufficient, it may lead to black spots on the interface. , the internal resistance increases and the capacity decreases, which directly reduces the battery life.

而且在传统技术中，注液后的电池易在注液孔残留电解液，电解液结晶后会对后端注液孔密封造成影响。为此，常在注液后增加注液孔擦拭装置，利用无纺布来吸附电解液，一方面降低了注液的效率，另一方面造成电解液的浪费。Moreover, in the traditional technology, the battery after liquid injection is prone to residual electrolyte in the liquid injection hole, and the crystallization of the electrolyte will affect the sealing of the rear liquid injection hole. For this reason, a liquid injection hole wiping device is often added after liquid injection, and non-woven fabrics are used to adsorb the electrolyte, which reduces the efficiency of liquid injection on the one hand, and causes waste of electrolyte on the other hand.

发明内容SUMMARY OF THE INVENTION

本发明要解决的技术问题是提供一种锂电池离心注液装置，使得电解液在离心力作用下，被甩进电池内，加快了极片浸润，而且不易在注液孔残留电解液，从而省去了电解液擦拭工序，有效提高了生产效率。The technical problem to be solved by the present invention is to provide a centrifugal liquid injection device for a lithium battery, so that the electrolyte is thrown into the battery under the action of centrifugal force, which speeds up the infiltration of the pole pieces, and is not easy to leave the electrolyte in the liquid injection hole, thereby saving energy. The electrolyte wiping process is eliminated, which effectively improves the production efficiency.

本发明的技术方案为：The technical scheme of the present invention is:

一种锂电池离心注液装置，包括有壳体，设置于壳体内的供液组件、连接组件和离心组件；A lithium battery centrifugal liquid injection device, comprising a shell, a liquid supply assembly, a connection assembly and a centrifugal assembly arranged in the shell;

所述的供液组件包括有固定设置于壳体内的真空泵和注液泵、以及供液主管道，所述的真空泵的输出管道、注液泵的输出管道均与供液主管道连通；The liquid supply assembly includes a vacuum pump and a liquid injection pump that are fixedly arranged in the casing, and a main liquid supply pipeline, and the output pipeline of the vacuum pump and the output pipeline of the liquid injection pump are all connected with the main liquid supply pipeline;

所述的连接组件包括有套环和密封套筒，所述的密封套筒包括有内筒、套装于内筒外围的外筒、以及设置于内筒和外筒之间的滚珠，供液主管道的输出端和密封套筒的外筒均插入到套环的内圈中且分别与套环的内壁紧密连接；The connecting assembly includes a collar and a sealing sleeve, and the sealing sleeve includes an inner cylinder, an outer cylinder sleeved on the periphery of the inner cylinder, and a ball arranged between the inner cylinder and the outer cylinder. The output end of the pipe and the outer cylinder of the sealing sleeve are inserted into the inner ring of the collar and are respectively tightly connected with the inner wall of the collar;

所述的离心组件包括有驱动电机和多个电池注液安装架，所述的驱动电机的输出轴朝上且驱动电机的输出轴上滑动设置有滑环，多个支撑杆的底端均与滑环铰接，驱动电机输出轴的顶部为管状结构且伸入到密封套筒的内筒中与内筒固定连接，从而使得供液主管道的输出端依次通过套环内圈、内筒的内圈与驱动电机输出轴的顶部连通，所述的多个电池注液安装架均包括有电池注液底座、设置于电池注液底座上的电池夹持块、以及注液管卡头、注液头和注液软管，所述的多个电池注液安装架的注液底座与对应的支撑杆的顶端铰接，每个电池注液安装架注液软管的输入端均与驱动电机输出轴的顶部连通，每个电池注液安装架注液软管的输出端和注液头的输入端之间通过注液管卡头连通。The centrifugal assembly includes a drive motor and a plurality of battery injection mounting brackets, the output shaft of the drive motor faces upwards, and a slip ring is slidably arranged on the output shaft of the drive motor, and the bottom ends of the plurality of support rods are connected to the bottom ends of the support rods. The slip ring is hinged, and the top of the output shaft of the drive motor is a tubular structure and extends into the inner cylinder of the sealing sleeve to be fixedly connected with the inner cylinder, so that the output end of the main liquid supply pipeline passes through the inner ring of the collar and the inner ring of the inner cylinder in turn. It is communicated with the top of the output shaft of the drive motor, and the plurality of battery injection mounting brackets include a battery injection base, a battery clamping block arranged on the battery injection base, a clamping head for injection pipes, and an injection head. and the liquid injection hose, the liquid injection bases of the plurality of battery liquid injection installation racks are hinged with the top ends of the corresponding support rods, and the input end of the liquid injection hose of each battery liquid injection installation rack is connected to the output shaft of the drive motor. The top is connected, and the output end of the fluid injection hose of each battery fluid injection mounting bracket and the input end of the fluid injection head are connected through the fluid injection pipe clamp.

所述的壳体内固定设置有上水平安装板和下水平安装板，所述的真空泵和注液泵设置于上水平安装板上，供液主管道的输出端向下穿过上水平安装板，所述的驱动电机设置于壳体的底部，驱动电机的输出轴穿过下水平安装板且与下水平安装板通过轴承连接。An upper horizontal installation plate and a lower horizontal installation plate are fixedly arranged in the casing, the vacuum pump and the liquid injection pump are arranged on the upper horizontal installation plate, and the output end of the main liquid supply pipeline passes downward through the upper horizontal installation plate, The drive motor is arranged at the bottom of the casing, and the output shaft of the drive motor passes through the lower horizontal mounting plate and is connected with the lower horizontal mounting plate through a bearing.

所述的真空泵的输出管道上设置有真空阀，所述的注液泵的输出管道上设置有注液阀和流量计。The output pipe of the vacuum pump is provided with a vacuum valve, and the output pipe of the liquid injection pump is provided with a liquid injection valve and a flow meter.

所述的每个电池注液安装架的注液底座上均设置有三个夹持块，分别位于电池放置位的左、右两侧和底部。Three clamping blocks are arranged on the liquid injection base of each battery liquid injection mounting frame, which are respectively located on the left and right sides and the bottom of the battery placement position.

本发明的优点：Advantages of the present invention:

本发明设置有真空泵，在注液之前对待注液电池进行抽真空作业，保证后期注液的快速；本发明的电池注液安装架与驱动电机连接，在驱动电机的带动下进行离心旋转，使得定位于电池注液安装架上待注液电池的电池在注液的同时进行离心旋转，电解液在离心力作用下被甩进电池内，加快了极片浸润，提升了注液效率，且避免了电解液散溢在注液孔上的风险，较传统方法而言，省去了电解液擦拭工位，可有效节省电池制造成本。The invention is provided with a vacuum pump, and the battery to be injected is vacuumed before the injection, so as to ensure the rapid injection of the liquid in the later stage; the battery injection mounting frame of the invention is connected with the driving motor, and is driven by the driving motor to perform centrifugal rotation, so that the The battery of the battery to be injected, positioned on the battery injection mounting frame, is centrifugally rotated during injection, and the electrolyte is thrown into the battery under the action of centrifugal force, which speeds up the infiltration of the pole piece, improves the injection efficiency, and avoids the need for Compared with the traditional method, the risk of electrolyte spillage on the injection hole is eliminated, which can effectively save the battery manufacturing cost.

附图说明Description of drawings

图1是本发明的结构示意图。Figure 1 is a schematic structural diagram of the present invention.

图2是本发明注液头与电池顶盖配合连接的结构示意图。FIG. 2 is a schematic structural diagram of the fitting connection between the liquid injection head of the present invention and the battery top cover.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

见图1，一种锂电池离心注液装置，包括有壳体1，固定设置于壳体1内的上水平安装板2和下水平安装板3，以及设置于壳体1内的供液组件、连接组件和离心组件；Referring to FIG. 1 , a lithium battery centrifugal liquid injection device includes a casing 1 , an upper horizontal mounting plate 2 and a lowerhorizontal mounting plate 3 fixedly arranged in the casing 1 , and a liquid supply assembly arranged in the casing 1 . , connecting components and centrifugal components;

供液组件包括有设置于上水平安装板2上的真空泵4和注液泵5、以及供液主管道6，真空泵4的输出管道7上设置有真空阀9，注液泵5的输出管道8上设置有注液阀10和流量计11，真空泵4的输出管道7、注液泵5的输出管道8均与供液主管道6连通，供液主管道6的输出端向下穿过上水平安装板2；The liquid supply assembly includes a vacuum pump 4 and a liquid injection pump 5 arranged on the upper horizontal mounting plate 2, and a mainliquid supply pipeline 6. A vacuum valve 9 is provided on the output pipeline 7 of the vacuum pump 4, and an output pipeline 8 of the liquid injection pump 5 is provided. Aliquid injection valve 10 and aflow meter 11 are provided on the upper part, and the output pipe 7 of the vacuum pump 4 and the output pipe 8 of the liquid injection pump 5 are all communicated with the mainliquid supply pipe 6, and the output end of the mainliquid supply pipe 6 passes downward through the upper level. mounting plate 2;

连接组件包括有套环12和密封套筒13，密封套筒13包括有内筒、套装于内筒外围的外筒、以及设置于内筒和外筒之间的滚珠，供液主管道6的输出端和密封套筒13的外筒均插入到套环12的内圈中且分别与套环12的内壁紧密连接；The connection assembly includes acollar 12 and asealing sleeve 13. Thesealing sleeve 13 includes an inner cylinder, an outer cylinder sleeved on the periphery of the inner cylinder, and a ball arranged between the inner cylinder and the outer cylinder. The output end and the outer cylinder of thesealing sleeve 13 are inserted into the inner ring of thecollar 12 and are respectively tightly connected with the inner wall of thecollar 12;

离心组件包括有驱动电机14和多个电池注液安装架，驱动电机14设置于壳体1的底部，驱动电机14的输出轴15朝上穿过下水平安装板3且与下水平安装板3通过轴承连接，驱动电机14的输出轴15上滑动设置有滑环16，多个支撑杆17的底端均与滑环16铰接，驱动电机输出轴15的顶部为管状结构且伸入到密封套筒13的内筒中与内筒固定连接，从而使得供液主管道6的输出端依次通过套环12内圈、内筒的内圈与驱动电机输出轴15的顶部连通，多个电池注液安装架均包括有电池注液底座18、设置于电池注液底座18上的电池夹持块19、以及注液管卡头20、注液头21和注液软管22，多个电池注液安装架的注液底座18与对应的支撑杆17的顶端铰接，每个电池注液安装架注液软管22的输入端均与驱动电机输出轴15的顶部连通，每个电池注液安装架注液软管22的输出端和注液头21的输入端之间通过注液管卡头20连通。The centrifugal assembly includes adrive motor 14 and a plurality of battery injection mounting brackets. Thedrive motor 14 is arranged at the bottom of the casing 1 , and theoutput shaft 15 of thedrive motor 14 passes upward through the lowerhorizontal mounting plate 3 and is connected with the lowerhorizontal mounting plate 3 . Through the bearing connection, theoutput shaft 15 of thedriving motor 14 is slidably provided with aslip ring 16, the bottom ends of the plurality ofsupport rods 17 are hinged with theslip ring 16, and the top of theoutput shaft 15 of the driving motor is a tubular structure and extends into the sealing sleeve The inner cylinder of thecylinder 13 is fixedly connected with the inner cylinder, so that the output end of the mainliquid supply pipeline 6 is connected to the top of theoutput shaft 15 of the driving motor through the inner ring of thecollar 12 and the inner ring of the inner cylinder in turn, and a plurality of batteries are installed with liquid injection. The racks all include abattery injection base 18, abattery clamping block 19 arranged on thebattery injection base 18, and a liquidinjection pipe clamp 20, aliquid injection head 21 and aliquid injection hose 22. Multiple battery liquid injection installations Theliquid injection base 18 of the rack is hinged with the top of thecorresponding support rod 17, the input end of theliquid injection hose 22 of each battery liquid injection mounting rack is connected to the top of theoutput shaft 15 of the drive motor, and each battery liquid injection mounting rack The output end of theliquid hose 22 and the input end of theliquid injection head 21 are communicated through the liquidinjection pipe clamp 20 .

见图2，在离心注液过程中，注液头21紧压进注液孔24中，每个注液工位上的电池23被三个夹持块19、注液头21紧紧固定在电池注液底座18上。Referring to Fig. 2, during the centrifugal injection process, theinjection head 21 is pressed into theinjection hole 24, and thebattery 23 on each injection station is tightly fixed by the threeclamping blocks 19 and theinjection head 21. On thebattery injection base 18.

本发明的工作原理：The working principle of the present invention:

（1）、初始状态下，真空阀9、注液阀10均处于关闭状态，滑环16的底部移动至接触到下水平安装板3，上料装置将待注液电池23放在电池注液底座18上并通过三个夹持块19进行定位，使注液头21紧插入注液孔24中；(1) In the initial state, the vacuum valve 9 and theliquid injection valve 10 are both closed, the bottom of theslip ring 16 moves to contact the lowerhorizontal mounting plate 3, and the feeding device places the battery to be injected 23 on the battery injection. Thebase 18 is positioned by threeclamping blocks 19, so that theliquid injection head 21 is tightly inserted into theliquid injection hole 24;

（2）、真空阀9开启，真空泵4对待注液电池23进行抽真空作业，一段时间后，真空泵4停止，真空阀9关闭；然后开启注液阀10，注液泵5输出的定量的电解液依次通过供液主管道6、套环12、密封套筒13、输出轴15的顶部输入到每个电池注液安装架的注液软管22中；(2) The vacuum valve 9 is opened, and the vacuum pump 4 vacuumizes theliquid injection battery 23. After a period of time, the vacuum pump 4 stops and the vacuum valve 9 is closed; then theliquid injection valve 10 is opened, and the liquid injection pump 5 outputs a quantitative electrolysis The liquid is sequentially input into theliquid injection hose 22 of each battery liquid injection installation rack through the mainliquid supply pipeline 6, thecollar 12, thesealing sleeve 13, and the top of theoutput shaft 15;

（3）、驱动电机14此时开始逐渐加速旋转，滑环16将沿输出轴15逐渐上升直至每个电池注液底座18均处于水平位置，电解液在离心力的作用下，通过注液头21被甩进待注液电池23中，维持一段时间后，电解液已经浸入极片中；(3) Thedrive motor 14 starts to rotate gradually at this time, theslip ring 16 will gradually rise along theoutput shaft 15 until eachbattery injection base 18 is in a horizontal position, and the electrolyte will pass through theinjection head 21 under the action of centrifugal force. After being thrown into thebattery 23 to be injected, after maintaining for a period of time, the electrolyte has been immersed in the pole piece;

（4）、离心注液完成后，驱动电机14逐步减速直至停止运动，滑环16逐渐下降到初始状态，然后三个夹持块19解除对电池23的夹持，下料装置将注液后的电池23从电池注液底座18上取出，放入后端工位。(4) After the centrifugal injection is completed, the drivingmotor 14 gradually decelerates until it stops moving, theslip ring 16 gradually descends to the initial state, and then the threeclamping blocks 19 release the clamping of thebattery 23, and the feeding device will Thebattery 23 is taken out from thebattery injection base 18 and placed in the rear end station.

尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

Translated fromChinese

1.一种锂电池离心注液装置，其特征在于：包括有壳体，设置于壳体内的供液组件、连接组件和离心组件；1. a lithium battery centrifugal liquid injection device is characterized in that: comprise a casing, be arranged in the liquid supply assembly, the connection assembly and the centrifugal assembly in the casing;

所述的离心组件包括有驱动电机和多个电池注液安装架，所述的驱动电机的输出轴朝上且驱动电机的输出轴上滑动设置有滑环，多个支撑杆的底端均与滑环铰接，驱动电机输出轴的顶部为管状结构且伸入到密封套筒的内筒中与内筒固定连接，从而使得供液主管道的输出端依次通过套环内圈、内筒的内圈与驱动电机输出轴的顶部连通，所述的多个电池注液安装架均包括有电池注液底座、设置于电池注液底座上的电池夹持块、以及注液管卡头、注液头和注液软管，所述的多个电池注液安装架的注液底座与对应的支撑杆的顶端铰接，每个电池注液安装架注液软管的输入端均与驱动电机输出轴的顶部连通，每个电池注液安装架注液软管的输出端和注液头的输入端之间通过注液管卡头连通；所述的每个电池注液安装架的注液底座上均设置有三个夹持块，分别位于电池放置位的左、右两侧和底部。The centrifugal assembly includes a drive motor and a plurality of battery injection mounting brackets, the output shaft of the drive motor faces upwards, and a slip ring is slidably arranged on the output shaft of the drive motor, and the bottom ends of the plurality of support rods are connected to the bottom ends of the support rods. The slip ring is hinged, and the top of the output shaft of the driving motor is a tubular structure and extends into the inner cylinder of the sealing sleeve to be fixedly connected with the inner cylinder, so that the output end of the main liquid supply pipeline passes through the inner ring of the collar and the inner ring of the inner cylinder in turn. It is communicated with the top of the output shaft of the driving motor, and the plurality of battery injection mounting brackets include a battery injection base, a battery clamping block arranged on the battery injection base, a clamping head for injection pipes, and an injection head. and the liquid injection hose, the liquid injection bases of the plurality of battery liquid injection installation racks are hinged with the top ends of the corresponding support rods, and the input end of the liquid injection hose of each battery liquid injection installation rack is connected to the output shaft of the drive motor. The top is connected, and the output end of the liquid injection hose of each battery liquid injection mounting rack and the input end of the liquid injection head are connected through the liquid injection pipe clamp; the liquid injection base of each battery liquid injection mounting rack is Three clamping blocks are provided, which are respectively located on the left and right sides and the bottom of the battery placement position.

2.根据权利要求1所述的一种锂电池离心注液装置，其特征在于：所述的壳体内固定设置有上水平安装板和下水平安装板，所述的真空泵和注液泵设置于上水平安装板上，供液主管道的输出端向下穿过上水平安装板，所述的驱动电机设置于壳体的底部，驱动电机的输出轴穿过下水平安装板且与下水平安装板通过轴承连接。2. A lithium battery centrifugal liquid injection device according to claim 1, characterized in that: an upper horizontal mounting plate and a lower horizontal mounting plate are fixedly arranged in the casing, and the vacuum pump and the liquid injection pump are arranged in the On the upper horizontal mounting plate, the output end of the main liquid supply pipeline passes downward through the upper horizontal mounting plate, the drive motor is arranged at the bottom of the casing, and the output shaft of the drive motor passes through the lower horizontal mounting plate and is installed with the lower horizontal mounting plate. The plates are connected by bearings.

3.根据权利要求1所述的一种锂电池离心注液装置，其特征在于：所述的真空泵的输出管道上设置有真空阀，所述的注液泵的输出管道上设置有注液阀和流量计。3. A lithium battery centrifugal liquid injection device according to claim 1, characterized in that: the output pipe of the vacuum pump is provided with a vacuum valve, and the output pipe of the liquid injection pump is provided with a liquid injection valve and flow meter.