CN210429962U

CN210429962U - Battery cell tab protection device

Info

Publication number: CN210429962U
Application number: CN201921507298.XU
Authority: CN
Inventors: 罗正有
Original assignee: Huizhou Hudian Technology Development Co Ltd
Current assignee: Huizhou Hudian Technology Development Co Ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-04-28
Anticipated expiration: 2029-09-11

Abstract

The utility model relates to a lithium cell electricity core production technical field, in particular to electric core utmost point ear protection device. The battery cell pressing device comprises a bottom plate for placing the battery cell, a cover plate for pressing the bottom plate and a processing assembly; the bottom plate is arranged on the processing assembly in a sliding mode; the cover plate is arranged on the bottom plate in an overturning manner. The sponge block is arranged under the pole lug of the core to be pressed, and the cover plate is used for covering protection, so that the purpose of protecting the battery cell in the core pressing process is achieved. Meanwhile, the metal terminal and the wiring terminal are arranged on the cover plate, so that the detection device indirectly contacts the lug to complete short circuit detection of the battery cell, the efficiency is improved, the lug of the battery cell is protected, and the yield is improved.

Description

Battery cell tab protection device

Technical Field

The utility model relates to a lithium cell electricity core production technical field, in particular to electric core utmost point ear protection device.

Background

The tab is a metal conductor which leads out the positive electrode and the negative electrode from the battery core, and the complete tab mainly comprises insulating sealant and a metal conductive matrix. The production process of the battery comprises a winding-core pressing step, wherein after positive and negative pole pieces containing pole lugs and a diaphragm are wound into a battery core, the battery core is required to be pressed and short circuit is required to be detected.

In the existing production technology, the problem of bending of the lug on the battery cell and unevenness of the lug and the battery cell can be caused when the core pressing device presses the battery cell. In addition, when the short circuit is detected on the pole lug, the detection device directly contacts the pole lug in a point mode to cause pole lug damage, and the quality of the pole lug is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an invention is used for lithium cell electricity core to press the core and detect the device of antipodal ear protection in the short circuit process, adopts the utility model provides a technical scheme has solved the technical problem that causes the utmost point ear to damage easily in current pressure core and the detection process.

In order to solve the technical problem, the utility model provides a device that is arranged in electric core pressure core and the testing process antipodal ear to protect. The battery cell processing device comprises a bottom plate for placing the battery cell, a cover plate for pressing the pole lug of the battery cell placed on the bottom plate and a processing assembly.

Preferably, the cover plate is arranged on the bottom plate in an overturning manner.

Preferably, the bottom plate is provided with a sponge block for supporting the tabs; and the sponge block is provided with a groove matched with the shape of the lug.

Preferably, the cover plate is provided with a step which is correspondingly pressed with the sponge block; and the step is provided with a metal terminal used for being in contact with the lug.

Preferably, a terminal is arranged on the cover plate and positioned on the back of the step.

Preferably, the metal terminal is connected to the connection terminal.

Preferably, the bottom plate and the cover plate are connected through a hinge.

Preferably, the processing assembly is a core pressing mechanism, and comprises a frame body for accommodating the bottom plate and a pressing plate for pressing the battery core.

From the above, use the utility model provides a can obtain following beneficial effect: the aim of protecting the battery cell in the core pressing process is fulfilled by arranging the sponge block below the lug of the core to be pressed and covering and protecting the sponge block by the cover plate; meanwhile, a metal terminal and a wiring terminal are arranged on the cover plate, so that the detection device indirectly contacts with the lug to complete short circuit detection of the battery cell. The efficiency is improved, the battery cell is protected, and the yield of the battery cell is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty.

Fig. 1 is a schematic view of an overall structure of a battery cell tab protection device according to an embodiment of the present invention;

fig. 2 is an elevation view of the overall structure of the battery cell tab protection device according to the embodiment of the present invention;

fig. 3 is the embodiment of the utility model provides an electricity core utmost point ear protection device bottom plate and apron structural schematic.

Detailed Description

The technical solution 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. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

In order to solve the above technical problem, this embodiment provides an electric core tab protection device for protecting the tab in the process of pressing the core and detecting the electric core of the lithium battery. The following describes the cell tab protection device provided in this embodiment in detail:

please refer to fig. 1-3: the battery tab protection device proposed in this embodiment includes a processing assembly 10, a bottom plate 20, and a cover plate 30. The bottom plate 20 is used for placing a battery cell to be pressed, and is slidably arranged on the processing assembly 10; the cover plate 30 is used for covering the bottom plate 20 and protecting the tabs of the battery cell; the processing assembly 10 is used for pressing the battery cell on the bottom plate 20, and the processing assembly is a core pressing mechanism.

The core pressing mechanism 10 includes a cylinder 11, a pressing plate 12, and a frame 13. The bottom plate 20 is provided in the frame 13 by a slide rail and is slidable inside and outside the frame 13. A platen 12 is provided above the frame 13, and the platen 12 is driven by the cylinder 11 to be movable up and down in the frame 13. The core pressing action is completed on the electric cores placed on the bottom plate 20 through the up-down pressing of the pressing plate 12.

It should be noted that the base plate 20 proposed in the present embodiment is rectangular, and the piezoelectric cores are to be arranged side by side on the base plate 20. Correspondingly, frame 13 encloses into the shape that can hold bottom plate 20, and clamp plate 12 designs for the rectangle, just in time presses on the electricity core side by side. The shapes of the frame 13 and the pressing plate 12 can be set correspondingly according to the number of the pressing cores and the positions of the arranged electric cores.

In the core pressing process, the problem of bending and unevenness of the pole ear on the battery core can occur. In order to protect the battery cell tabs in the core pressing process, a cover plate 30 is arranged on the bottom plate 20, the bottom plate 20 is connected with the cover plate 30 through a hinge 24, and the cover plate 30 can be turned over and covers the bottom plate 20.

Specifically, a sponge block 21 is further arranged on the bottom plate 20, and the sponge block 21 is used for supporting the pole lugs and buffering and protecting the pole lugs in the process of pressing the core of the battery cell. The sponge block 21 is provided with a groove 22 matched with the shape of the pole lug and used for placing the pole lug. The cover plate 30 is provided with a step corresponding to the size of the sponge block 21 on the pressing surface with the bottom plate 20. Overturn to with bottom plate 20 pressfitting through apron 30, the step of apron 30 and the laminating of the sponge piece 21 of bottom plate 20, and then realize the guard action to the utmost point ear of placing on sponge piece 21.

In order to avoid interference between the cover plate 30 and the platen 12 when the bottom plate 20 is placed in the housing 13 and the core pressing operation is performed. The two sides of the bottom plate 20 are provided with limit blocks 23. The bottom plate 20 slides into the frame 13, and when the battery cell moved to the bottom plate 20 is just located at the pressing position of the pressing plate 12, the limiting blocks 23 at the two sides of the bottom plate 20 abut against the two sides of the frame 13, and at this time, the bottom plate 20 is moved in place. The sliding displacement of the bottom plate 20 is controlled to avoid the interference between the cover plate 30 and the pressing plate 12.

Example 2

The embodiment provides a battery tab protection device, which includes a processing assembly 10, a bottom plate 20 and a cover plate 30. The bottom plate 20 is used for placing a battery cell to be pressed, and is slidably arranged on the processing assembly 10; the tooling assembly 10 is used to press fit the cells on the substrate 20. The base plate 20 is connected with the cover plate 30 through a hinge 24, and the cover plate 30 can be covered on the base plate 20 in a turnover mode.

For the battery cell that completes the core pressing process in the processing assembly 10, a short circuit detection process is further required. In the existing detection process, the detection head of the detection device is directly contacted with the lug for detection, and the contact between the detection head and the lug generates friction to cause the damage of the lug.

As shown in fig. 3, in order to protect the tabs during detection, a sponge block 21 is further disposed on the bottom plate 20, and a groove 22 for placing the tabs is disposed on the sponge block 21, and the groove matches with the shape of the tabs. The cover plate 30 is provided with a step matched with the sponge block 21 in size on the pressing surface with the bottom plate 20, and the step is provided with a metal terminal 31 used for contacting with a pole lug. The grooves 22 of the sponge block 21 are matched with the metal terminals 31. A terminal 32 is provided on the cover 30 on the back side of the step, and the metal terminal 31 and the terminal 32 are connected by a conductive wire.

Further, overturn to with bottom plate 20 pressfitting through apron 30, the step of apron 30 and the laminating of sponge piece 21 of bottom plate 20, metal terminal 31 on the step of apron 30 and arrange the utmost point ear contact on sponge piece 21 in this moment, and then realize electric core utmost point ear and binding post 32 intercommunication, detect the head and can accomplish the short circuit detection of electric core through the contact with binding post 32.

In summary, the battery cell tab protection device provided by this embodiment realizes the purpose of protecting the battery cell in the core pressing process by arranging the sponge block under the tab to be pressed and covering the tab with the cover plate for protection. Meanwhile, a metal terminal and a wiring terminal are arranged on the cover plate, so that the detection device indirectly contacts with the lug to complete short circuit detection of the battery cell. The efficiency is improved, the battery cell is protected, and the yield of the battery cell is improved.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. The utility model provides an electricity core utmost point ear protection device, protects electricity core utmost point ear in electric core course of working, its characterized in that: the battery cell processing device comprises a bottom plate for placing the battery cell, a cover plate for pressing the pole lug of the battery cell placed on the bottom plate and a processing assembly.

2. The cell tab protection device of claim 1, wherein: the cover plate is arranged on the bottom plate in an overturning manner.

3. The cell tab protection device of claim 2, wherein: the bottom plate is provided with a sponge block for supporting the lug; and the sponge block is provided with a groove matched with the shape of the lug.

4. The cell tab protection device of claim 3, wherein: the cover plate is provided with a step which is correspondingly pressed with the sponge block; and the step is provided with a metal terminal used for being in contact with the lug.

5. The cell tab protection device of claim 4, wherein: and a wiring terminal is arranged on the cover plate and positioned on the back surface of the step.

6. The cell tab protection device of claim 5, wherein: the metal terminal is connected with the wiring terminal.

7. The cell tab protection device of claim 6, wherein: the bottom plate is connected with the cover plate through a hinge.

8. The cell tab protection device of claim 7, wherein: the processing assembly is a core pressing mechanism and comprises a frame body for accommodating the bottom plate and a pressing plate for pressing the battery core.