Battery cell tab bending device
By setting air blow holes on the mold of the battery cell ear bending device, the carbon powder on the surface of the electrode is removed, which solves the problem of liquid leakage channels when the battery cell is top sealed, and reduces the risk of corrosion and bloating of the battery cell.
Patent Information
- Application Number
- CN202422384107.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The toner produced during the bending of the battery cell ear can easily adhere to the surface of the electrode ear, resulting in a liquid leakage channel when the battery cell is sealed, causing risks such as corrosion and bloating.
A battery-cell pole ear bending device is designed, and the first bending mold and the second bending mold are used to cooperate with each other. A blowing hole is installed on the mold to blow air on the surface of the pole ear during bending operation to remove toner and avoid toner sealing.
Effectively remove toner from the electrodes, prevent the formation of liquid leakage channels when the battery cell is sealed, and reduce the risk of corrosion and bloating of the battery cell.
Smart Images
Figure CN223234791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery cell tab bending device. Background Art
[0002] At present, the tabs on the battery cells need to be bent after hot pressing. During the bending process of the tabs, carbon powder will fall off, and the fallen carbon powder is easy to adhere to the surface of the battery cell tabs, and enter the subsequent top sealing process along with the battery cell tabs.
[0003] When the battery cell is top-sealed, the carbon powder at the battery cell tab will also be sealed. Due to the presence of carbon powder, the battery cell is prone to leakage channels when top-sealing. Air can then enter the interior of the battery cell through the leakage channels, causing risks such as corrosion and bloating of the battery cell. Utility Model Content
[0004] The main purpose of the utility model is to propose a battery cell tab bending device, which aims to solve the problem that when the battery cell is top-sealed, carbon powder remains on the surface of the tab, making the battery cell prone to leakage channels, causing serious risks such as corrosion and bloating of the battery cell.
[0005] The utility model provides a battery cell tab bending device, comprising:
[0006] Workbench for placing battery cells;
[0007] a bending mechanism disposed on one side of the workbench, the bending mechanism comprising a first bending die, a second bending die, and a driving assembly, wherein the first bending die and the second bending die are disposed opposite to each other with a bending space formed therebetween, the driving assembly being connected to at least one of the first bending die and the second bending die for driving the first bending die and the second bending die to open and close relative to each other;
[0008] Wherein, at least one of the first bending mold and the second bending mold is provided with a blowing hole, and the blowing hole is used to blow air to clean the tab of the battery cell.
[0009] In some embodiments, a first blowing hole is provided on the first bending mold, and the first blowing hole is located on a side of the first bending mold facing the second bending mold.
[0010] In some embodiments, at least one group of the first air blowing holes is provided, and each group of the first air blowing holes includes a plurality of first air blowing holes arranged in sequence and spaced apart, and an arrangement direction of the plurality of first air blowing holes is the same as a width direction of the tab of the battery cell.
[0011] In some embodiments, at least two groups of the first blowing holes are provided, and the at least two groups of the first blowing holes are arranged in sequence and spaced apart, and the arrangement direction of the at least two groups of the first blowing holes is the same as the length direction of the tab of the battery cell.
[0012] In some embodiments, a second blowing hole is provided on the second bending mold, and the second blowing hole is located on a side of the second bending mold facing the first bending mold.
[0013] In some embodiments, at least one group of the second air blowing holes is provided, and each group of the second air blowing holes includes a plurality of second air blowing holes arranged in sequence and spaced apart, and an arrangement direction of the plurality of second air blowing holes is the same as a width direction of the tab of the battery cell.
[0014] In some embodiments, at least two groups of second air blowing holes are provided, and the at least two groups of second air blowing holes are arranged in sequence and spaced apart, and the arrangement direction of the at least two groups of second air blowing holes is the same as the length direction of the tab of the battery cell.
[0015] In some embodiments, a surface of the first bending mold facing the second bending mold is configured as a first inclined surface, and a surface of the second bending mold facing the first bending mold is configured as a second inclined surface adapted to the first inclined surface.
[0016] In some embodiments, the battery cell tab bending device further includes: an air supply mechanism, which is connected to the air hole and is used to supply air to the air hole.
[0017] In some embodiments, the air supply mechanism includes an air supply component, an air supply pipeline and a throttle valve, one end of the air supply pipe is connected to the air supply component, and the other end of the air supply pipe is connected to the blowing hole, the air supply pipeline is used to guide the gas output by the air supply component to the blowing hole, and the throttle valve is provided on the air supply pipeline for adjusting the air flow rate of the air supply pipeline.
[0018] The battery cell tab bending device provided by the utility model bends the tab of the battery cell through the cooperation of the first bending mold and the second bending mold, wherein at least one of the first bending mold and the second bending mold is provided with a blowing hole. During the bending operation, the blowing holes on the bending mold simultaneously blow air toward the surface of the battery cell tab, which can blow away the carbon powder generated when the tab is bent, thereby avoiding the carbon powder being sealed together when the battery cell is top-sealed and the formation of a leakage channel, thereby reducing the risk of corrosion and flatulence in the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of a cell tab bending device in one embodiment of the present invention;
[0020] Figure 2 This is a structural diagram of the first bending die in one embodiment of the utility model;
[0021] Figure 3 This is a structural schematic diagram of a first bending mold in another embodiment of the present utility model;
[0022] Figure 4 This is a structural diagram of the second bending die in one embodiment of the present utility model;
[0023] Description of Figure Numbers:
[0024] Label name Label name 110 Machine 120 Bending mechanism 130 battery cells 121 The first bending die 122 Second bending die 123 Blowing hole 131 Tabs 1211 First blowing hole 1221 Second blowing hole 1212 First slope 1222 second slope
[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the schemes in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0028] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.
[0029] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.
[0030] The present invention provides a device for bending a battery cell tab. Figure 1 , the battery cell tab bending device includes:
[0031] The workbench 110 and the bending mechanism 120 are provided. The workbench 110 is used to place the battery cell 130. The workbench 110 may be in the shape of a plate, and the battery cell 130 is placed on its surface. The bending mechanism 120 is provided on one side of the workbench 110. The bending mechanism 120 includes a first bending mold 121, a second bending mold 122, and a driving assembly. The first bending mold 121 and the second bending mold 122 are arranged opposite to each other and a bending space is formed therebetween. The driving assembly is connected to at least one of the first bending mold 121 and the second bending mold 122 to drive the first bending mold 121 and the second bending mold 122 to open and close relative to each other. At least one of the first bending mold 121 and the second bending mold 122 is provided with an air hole 123, and the air hole 123 is used to blow air to clean the tab 131 of the battery cell 130. Optionally, the drive assembly is connected to the first bending die 121; or, the drive assembly is connected to the second bending die 122; or, the drive assembly is connected to both the first bending die 121 and the second bending die 122. The drive assembly may include a drive motor and a gear assembly or a pulley assembly. When the tab 131 is bent, the tab 131 on the battery cell 130 is located in the bending space, and the drive assembly drives the first bending die 121 and the second bending die 122 to close relative to each other, thereby bending the tab 131 on the battery cell 130. Optionally, the first bending die 121 is an upper bending die, and the second bending die is a lower bending die. Carbon powder may be generated during the bending process of the tab 131. At least one of the first bending die 121 and the second bending die 122 is provided with an air hole 123. The air hole is used to blow off the carbon powder on the tab 131, thereby cleaning the tab. Optionally, the first bending mold 121 is provided with a blowing hole 123 ; or the second bending mold 122 is provided with a blowing hole 123 ; or both the first bending mold 121 and the second bending mold 122 are provided with a blowing hole 123 .
[0032] The battery cell tab bending device provided by the present invention cooperates with the first bending mold 121 and the second bending mold 122 to bend the tab 131 of the battery cell 130, wherein at least one of the first bending mold 121 and the second bending mold 122 is provided with a blowing hole 123. During the bending operation, the blowing hole 123 on the bending mold simultaneously blows air toward the surface of the battery cell tab, which can blow away the carbon powder generated when the tab 131 is bent, thereby avoiding the carbon powder being sealed together when the battery cell 130 is top-sealed and the formation of a leakage channel, thereby reducing the risk of corrosion and flatulence of the battery cell 130.
[0033] In some embodiments, reference Figure 2 The first bending mold 121 is provided with a first air blowing hole 1211. The first air blowing hole 1211 is provided on the first bending mold 121. The first air blowing hole 1211 is located on the side of the first bending mold 121 facing the second bending mold 122. During the bending process of the tab 131, the side of the first bending mold 121 facing the second bending mold 122 will directly contact the tab 131. After the tab 131 is bent, carbon powder is generated. The first air blowing hole 1211 on the first bending mold 121 can blow off the carbon powder on the tab 131, thereby achieving air cleaning of the tab. The first air blowing hole 1211 can be circular, triangular, polygonal, or any combination of different shapes. In addition, the number of the first air blowing holes 1211 can be one or more, and is set according to actual conditions, and is not limited here.
[0034] In some embodiments, at least one group of first air holes 1211 is provided, and each group of first air holes 1211 includes a plurality of first air holes 1211 arranged sequentially and spaced apart. The arrangement direction of the plurality of first air holes 1211 is the same as the width direction of the tabs 131 of the battery cell 130. Specifically, two tabs 131 on the battery cell 130 are typically spaced apart, one for the positive tab and the other for the negative tab. In this embodiment, the first air holes 1211 are provided as a group, and the group of first air holes 1211 includes a plurality of first air holes arranged sequentially and spaced apart. The design of the plurality of first air holes 1211 can simultaneously blow off carbon powder on both the positive and negative tabs. Furthermore, the simultaneous blowing of air from the plurality of first air holes 1211 can accelerate the blowing off of carbon powder and improve the cleaning effect.
[0035] In some embodiments, reference Figure 3 At least two groups of first air holes 1211 are provided. The at least two groups of first air holes 1211 are arranged sequentially and spaced apart. The arrangement direction of the at least two groups of first air holes 1211 is the same as the length direction of the tabs 131 of the battery cells 130. Battery cells 130 of different specifications are configured with tabs 131 of different lengths. When the battery cell 130 is larger, the tabs 131 configured therein are also longer. If carbon powder generated when the tab 131 is bent adheres to the end of the tab 131, it is difficult to blow away the carbon powder from the entire tab 131 with only one group of first air holes 1211. In this embodiment, two groups of first air holes 1211 are provided. The two groups of first air holes 1211 are spaced apart along the length direction of the tab 131. Even if the tab 131 configured on the battery cell 130 is longer, the first air holes 1211 can blow away the carbon powder from the entire tab 131, thereby achieving air cleaning of the tab 131.
[0036] In some embodiments, reference Figure 4The second bending mold 122 is provided with a second air blowing hole 1221. The second air blowing hole 1221 is provided on the second bending mold 122. The second air blowing hole 1221 is located on the side of the second bending mold 122 facing the first bending mold 121. During the bending process of the tab, the side of the second bending mold 122 facing the first bending mold 121 will directly contact the tab 131. After the tab 131 is bent, carbon powder is generated. The second air blowing hole 1221 located on the side of the second bending mold 122 facing the first bending mold 121 can blow off the carbon powder on the tab 131, thereby achieving air cleaning of the tab 131. The second air blowing hole 1221 can be circular, triangular, polygonal, etc., or any combination of different shapes. In addition, the number of the second air blowing holes 1221 can be one or more, and is set according to actual conditions, and is not limited here.
[0037] In some embodiments, at least one group of second air holes 1221 is provided, and each group of second air holes 1221 includes a plurality of second air holes 1221 arranged sequentially and spaced apart. The arrangement direction of the plurality of second air holes 1221 is the same as the width direction of the tabs 131 of the battery cell 130. Specifically, two tabs 131 on the battery cell 130 are typically spaced apart, one for the positive tab and the other for the negative tab. In this embodiment, the second air holes 1221 are provided as a group, and the group of second air holes 1221 includes a plurality of second air holes 1221 arranged sequentially and spaced apart. The design of the plurality of second air holes 1221 can simultaneously blow off carbon powder on both the positive and negative tabs. Furthermore, the simultaneous blowing of air through the plurality of second air holes 1221 can accelerate the speed at which carbon powder is blown off both the positive and negative tabs.
[0038] In some embodiments, at least two groups of second air holes 1221 are provided. The at least two groups of second air holes 1221 are arranged sequentially and spaced apart. The arrangement direction of the at least two groups of second air holes 1221 is the same as the length direction of the tabs 131 of the battery cells 130. Battery cells 130 of different specifications are configured with tabs 131 of different lengths. When the battery cell 130 is larger, the tabs 131 configured therewith are also longer. If carbon powder generated when the tab 131 is bent adheres to the end of the tab 131, it is difficult to blow away the carbon powder from the entire tab 131 with only one group of second air holes 1221. In this embodiment, alternatively, two groups of second air holes 1221 are provided. The two groups of second air holes 1221 are spaced apart along the length direction of the tab 131. Even if the tab 131 configured on the battery cell 130 is longer, the second air holes 1221 can blow away the carbon powder from the entire tab 131, thereby achieving air cleaning of the tab 131.
[0039] In some embodiments, the side of the first bending die 121 facing the second bending die 122 is configured as a first inclined surface 1212, and the side of the second bending die 122 facing the first bending die 121 is configured as a second inclined surface 1222 that matches the first inclined surface 1212. The first inclined surface 1212 and the second inclined surface 1222 have the same inclination angle, which facilitates bending the battery cell tab to a bending angle that is convenient for subsequent processing. Furthermore, during the cleaning process of the tab 131, if carbon powder falls onto the first inclined surface 1212 and / or the second inclined surface 1222, it can also slide down quickly along the inclined surface and then slide out of the bending die, so that the bending die remains clean.
[0040] In some embodiments, the battery cell tab bending device further includes an air supply mechanism, which is in communication with the air blow hole 123 and is configured to supply air to the air blow hole 123. During operation of the battery cell tab bending device, the air supply mechanism supplies air to the air blow hole 123, enabling the air blow hole 123 to blow away carbon powder generated during the bending of the battery cell tab, thereby achieving air cleaning of the tab 131.
[0041] In some embodiments, the air supply mechanism includes an air supply component, an air supply pipeline and a throttle valve. One end of the air supply pipeline is connected to the air supply component, and the other end of the air supply pipeline is connected to the blowing hole 123. The air supply pipeline is used to guide the gas output by the air supply component to the blowing hole 123. The throttle valve is provided on the air supply pipeline to adjust the air flow rate of the air supply pipeline. The bending mechanism 120 is provided with a mounting hole that communicates with the air blowing hole 123. One end of the air supply pipe is mounted in the mounting hole. When the battery cell tab bending device is in operation, the air supply component delivers gas to the bending mechanism 120 through the air supply pipe. The gas is blown toward the tab 131 of the battery cell 130 through the air blowing hole 123 in the bending mechanism 120 to clean the tab 131 of the battery cell 130. In addition, in this embodiment, a throttle valve is provided on the air supply pipe. When the tab 131 on the battery cell 130 is relatively thin, the air pressure at the outlet of the air supply pipe is reduced to prevent the tab 131 from being broken. When the tab 131 on the battery cell 130 is relatively thick, the air pressure at the outlet of the air supply pipe can be increased to accelerate the blowing off of carbon powder without affecting the tab 131. The air supply component can be an air pump.
[0042] The above description is only part or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.
Claims
1. A battery cell tab bending device, characterized in that: include: Workbench for placing battery cells; a bending mechanism disposed on one side of the workbench, the bending mechanism comprising a first bending die, a second bending die, and a driving assembly, wherein the first bending die and the second bending die are disposed opposite to each other with a bending space formed therebetween, the driving assembly being connected to at least one of the first bending die and the second bending die for driving the first bending die and the second bending die to open and close relative to each other; Wherein, at least one of the first bending mold and the second bending mold is provided with a blowing hole, and the blowing hole is used for blowing and cleaning the tabs of the battery cell.
2. The battery cell tab bending device according to claim 1, characterized in that: The first bending mold is provided with a first blowing hole, and the first blowing hole is located on a side of the first bending mold facing the second bending mold.
3. The battery cell tab bending device according to claim 2, characterized in that: At least one group of the first air blowing holes is provided, and each group of the first air blowing holes includes a plurality of first air blowing holes arranged in sequence and spaced apart, and an arrangement direction of the plurality of first air blowing holes is the same as a width direction of the tab of the battery cell.
4. The battery cell tab bending device according to claim 3, characterized in that: At least two groups of the first blowing holes are provided, and the at least two groups of the first blowing holes are arranged in sequence and spaced apart. The arrangement direction of the at least two groups of the first blowing holes is the same as the length direction of the tab of the battery cell.
5. The battery cell tab bending device according to claim 1, characterized in that: The second bending mold is provided with a second air blowing hole, and the second air blowing hole is located on a side of the second bending mold facing the first bending mold.
6. The battery cell tab bending device according to claim 5, characterized in that: At least one group of the second air blowing holes is provided, and each group of the second air blowing holes includes a plurality of second air blowing holes arranged in sequence and spaced apart, and the arrangement direction of the plurality of second air blowing holes is the same as the width direction of the tab of the battery cell.
7. The battery cell tab bending device according to claim 6, characterized in that: At least two groups of the second air blowing holes are provided, and the at least two groups of the second air blowing holes are arranged in sequence and spaced apart. The arrangement direction of the at least two groups of the second air blowing holes is the same as the length direction of the tab of the battery cell.
8. The battery cell tab bending device according to any one of claims 1 to 7, characterized in that: A surface of the first bending die facing the second bending die is configured as a first inclined surface, and a surface of the second bending die facing the first bending die is configured as a second inclined surface matched with the first inclined surface.
9. The battery cell tab bending device according to any one of claims 1 to 7, characterized in that: Also includes: An air supply mechanism is communicated with the air blowing hole and is used for supplying air to the air blowing hole.
10. The battery cell tab bending device according to claim 9, characterized in that: The air supply mechanism includes an air supply component, an air supply pipeline and a throttle valve. One end of the air supply pipeline is connected to the air supply component, and the other end of the air supply pipeline is connected to the blowing hole. The air supply pipeline is used to guide the gas output by the air supply component to the blowing hole. The throttle valve is arranged on the air supply pipeline to adjust the air flow rate of the air supply pipeline.