Storage battery tab bending device

Abstract

The utility model discloses a storage battery pole lug bending device which comprises a bending and pressing air cylinder connecting plate, a pole lug bending and pressing plate, a plastic shell clamping and positioning device, a clamping device supporting seat, a jacking air cylinder mounting plate, a guide column, a guide sleeve and a push plate, and the pole lug bending and pressing plate is arranged in the center of the bottom of the bending and pressing air cylinder connecting plate. A guide column is arranged between the tab bending and pressing plate and the jacking air cylinder mounting plate through a guide sleeve, a telescopic rod of an air cylinder on the jacking air cylinder mounting plate is connected with a push plate, clamping device supporting seats are symmetrically arranged on the push plate, and a plastic shell clamping and positioning device is arranged on the clamping device supporting seats. A tab battery plastic shell to be bent is clamped between the plastic shell clamping and positioning devices, and a tab of a pole piece on the tab battery plastic shell is matched with the tab bending and pressing plate. The bending device is convenient to operate, and bending efficiency and quality can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery manufacturing, and particularly relates to a battery tab bending device. BACKGROUND

[0002] In the manufacturing process of batteries (such as lead-acid batteries, lithium-ion batteries, etc.), post-bending welding is a key technology. As the current-carrying terminal inside the battery, the tab needs to be tightly welded with the plate or terminal to achieve efficient transmission of current. However, the traditional tab bending and welding process often has the following problems:

[0003] 1. Insufficient welding reliability: due to unstable or inaccurate bending process, the tab may have position deviation or inconsistent bending angle during subsequent welding, resulting in insufficient contact area of the welding point, thereby increasing the risk of false welding and welding failure. Especially in high-rate discharge and frequent vibration application scenarios (such as electric vehicles and industrial equipment), such unreliable welding is prone to cause safety hazards such as welding point cracking and local overheating.

[0004] 2. Failure caused by stress concentration: in the traditional process, the tab after bending often cannot form uniform stress distribution, and external force (vibration, impact) is easily concentrated near the welding point, further increasing the possibility of welding point cracking or falling off. If the bending angle and bending position are not appropriate, this problem will be exacerbated, negatively affecting the reliability and life of the battery.

[0005] 3. Low automation level and limited production efficiency: many existing tab bending processes rely on manual or semi-automatic methods, which cannot guarantee bending accuracy and consistency in mass production; at the same time, manual operation cannot ensure stable bending speed and welding quality, which may result in poor product consistency and low yield, thereby increasing production costs.

[0006] 4. Balance between heat management and mechanical strength: in high-power-density batteries, the tab not only needs to ensure good electrical conductivity, but also needs to consider heat dissipation requirements. If the bending structure design is unreasonable, it may cause excessive contact resistance or undesirable heat concentration at the bending point. A reasonable bending structure can increase the contact area between the tab and the current collector, allowing the molten metal to cover the interface more evenly, thereby reducing contact resistance and improving heat dissipation efficiency.

[0007] Based on the above problems, in order to consider the electrochemical performance, mechanical strength, thermal management and production efficiency in the design and manufacture of storage battery, the process of welding after tab bending needs to be continuously optimized. Through the automatic and accurate bending device, the tab bending can be stably realized in mass production, and the high reliability of subsequent welding is ensured. This is very important for improving the service life, safety performance of the battery and adapting to the strict requirements of vehicle level, industrial level, etc. Therefore, how to design and manufacture a tab bending device with high efficiency, high precision and suitable for automatic production has become a research hotspot and technical difficulty in the field of storage battery manufacturing. The utility model is proposed in this background, aiming at providing a storage battery tab bending device which has reasonable structure, convenient operation and can effectively improve the bending efficiency and quality. Utility model content

[0008] In view of the defects in the prior art, the utility model aims at providing a storage battery tab bending device which is convenient to operate and can effectively improve the bending efficiency and quality.

[0009] In order to realize the above-mentioned purpose, the utility model is realized through the following technical scheme: a storage battery tab bending device, comprising a bending and pressing cylinder connecting plate, a tab bending and pressing plate, a plastic shell clamping and positioning device, a clamping device support seat, a jacking cylinder mounting plate, a guide column, a guide sleeve and a push plate, the bottom center of the bending and pressing cylinder connecting plate is provided with the tab bending and pressing plate, the guide column is arranged between the tab bending and pressing plate and the jacking cylinder mounting plate through the guide sleeve, the extension rod of the cylinder on the jacking cylinder mounting plate is connected with the push plate, the push plate is provided with the clamping device support seat symmetrically, the clamping device support seat is provided with the plastic shell clamping and positioning device, the plastic shell clamping and positioning device clamps the tab battery plastic shell to be bent, and the tab of the tab battery plastic shell cooperates with the tab bending and pressing plate.

[0010] Preferably, the tab battery plastic shell is provided with positive and negative plates and a separator in each grid.

[0011] The utility model has the advantages of reasonable structure, high efficiency, precision, stability and safety, and is suitable for large-scale and high-quality battery production requirements. DRAWINGS

[0012] The utility model will be described in detail below in combination with the drawings and specific embodiments.

[0013] Figure 1 The utility model is a structural schematic view. EMBODIMENT

[0014] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model will be further described in combination with specific embodiments.

[0015] Reference Figure 1 The specific embodiment adopts the following technical scheme: a battery tab bending device, comprising a bending and pressing cylinder connecting plate 1, a tab bending and pressing plate 2, a plastic shell clamping and positioning device 3, a clamping device support seat 4, a jacking cylinder mounting plate 5, a guide column 6, a guide sleeve 7, and a push plate 8. The bottom center of the bending and pressing cylinder connecting plate 1 is provided with the tab bending and pressing plate 2. The tab bending and pressing plate 2 and the jacking cylinder mounting plate 5 are provided with the guide column 6 through the guide sleeve 7. The telescopic rod of the cylinder on the jacking cylinder mounting plate 5 is connected with the push plate 8. The push plate 8 is symmetrically provided with the clamping device support seat 4. The clamping device support seat 4 is provided with the plastic shell clamping and positioning device 3. The plastic shell clamping and positioning device 3 clamps the tab battery plastic shell 9 to be bent. The tab of the tab battery plastic shell 9 cooperates with the tab bending and pressing plate 2.

[0016] It is worth noting that the tab battery plastic shell 9 is provided with positive and negative tabs and a separator in each grid.

[0017] The working principle of the specific embodiment is as follows: the automatic line transports the battery plastic shell loaded with tabs to the tab bending station. The clamping device clamps the plastic shell. The push plate is pushed upward by the bottom jacking cylinder. The tab bending and pressing plate is reset after the tab is bent. The tab battery plastic shell to be bent (the plastic shell is provided with positive and negative tabs and a separator in each grid. The tab is welded with the busbar after being bent).

[0018] The specific embodiment transports the battery plastic shell loaded with tabs to the bending station through the automatic line, reduces manual intervention, and improves production efficiency. Through the cooperation of the plastic shell clamping and positioning device and the clamping device support seat, the position of the tab battery plastic shell is fixed during the bending process, and errors caused by movement are avoided. The design of the guide column and the guide sleeve ensures the stability of the push plate during upward and downward movement, ensuring the smooth progress of the bending process. The device is driven by a cylinder, and the operation is simple. The bending and resetting of the tab can be completed by controlling the extension and retraction of the cylinder, reducing the operation difficulty. The device is suitable for tab battery plastic shells of various specifications and has strong versatility. The accurate cooperation between the tab bending and pressing plate and the tab ensures the accuracy and consistency of the bending, thereby improving the quality of the final product. Through automation and mechanization, the production cycle is greatly shortened, the production efficiency is improved, and the device is suitable for large-scale production, reduces the dependence on manual labor, reduces labor costs, and also reduces errors and damage caused by manual operation.

[0019] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A battery tab bending device, characterized in that, The device includes a bending and pressing cylinder connecting plate (1), an electrode tab bending and pressing plate (2), a plastic shell clamping and positioning device (3), a clamping device support base (4), a lifting cylinder mounting plate (5), a guide post (6), a guide sleeve (7), and a push plate (8). The bending and pressing cylinder connecting plate (1) has an electrode tab bending and pressing plate (2) at its bottom center. The electrode tab bending and pressing plate (2) and the lifting cylinder mounting plate (5) are connected by a guide post (6) through a guide sleeve (7). The telescopic rod of the cylinder on the lifting cylinder mounting plate (5) is connected to the push plate (8). The push plate (8) has a clamping device support base (4) symmetrically arranged. The clamping device support base (4) has a plastic shell clamping and positioning device (3). The plastic shell clamping and positioning device (3) clamps the electrode tab battery plastic shell (9) to be bent. The electrode tabs on the electrode tab battery plastic shell (9) cooperate with the electrode tab bending and pressing plate (2).

2. The battery tab bending device according to claim 1, characterized in that, Each compartment of the battery casing (9) is equipped with positive and negative electrode plates and separators.

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