SHINHOP laser

The power battery is the "engine" of new energy vehicles, akin to the "heart" of humans. Its quality determines the service life of the device. Therefore, the quality of the power battery is the key focus for all buyers, with a large demand for products and huge development space, along with its production support.Power Battery Laser Welding MachineDue to its rapid development, technology is continuously updated and improved. The improvement of the technical level of power battery welding equipment plays a good role in promoting the production quality of power batteries. Compared to traditional welding methods, professional.Power Battery Laser WelderWhether in welding quality, speed, or efficiency, it is unmatched by traditional methods. Therefore, how to purchase suitable laser welding equipment has become a hot topic for power battery manufacturers.
SHINHOP Laser is one of the earliest companies in China engaged in battery laser welding research. To date, the welding processing technology has covered all types of battery welding, including battery tab welding, battery cap welding, battery cover sealing welding, liquid injection hole welding, as well as soft connection welding, cell welding, and battery module welding in power batteries.Aluminum to Nickel Laser WeldingAnd other processing, having obtained thousands of battery-related welding solutions and automated production systems, becoming one of the few manufacturers in South China, and also in the country, capable of successfully developing battery laser welding systems. It is important to note that as of the second quarter of 2018, there are only four or five companies in the country that can professionally engage in various battery welding solutions.
What are the difficulties in welding power batteries?
In simple terms, the thickness of mainstream power battery casings is between 0.6-0.8MM, generally below 1.0MM. The welding methods are divided into top welding and side welding, each with its own advantages and disadvantages.
Advantages of side welding for power batteries: The main benefit of side welding is that it has a smaller impact on the internal cell, and spatter will not easily enter the inside of the casing!
Advantages of top welding for power batteries: A galvanometer scanning system can be used to assist laser welding, making automation of welding easier and improving welding efficiency!
Disadvantages of side welding for power batteries: Welding may cause bulging, which can slightly affect the assembly of subsequent processes. Therefore, the side welding process has higher requirements for the stability of the laser, the cleanliness of the materials, and the fit gap between the top cover and the casing.
Disadvantages of top welding for power batteries: The requirements for the previous process of entering the casing and positioning are very high, leading to high automation requirements for the equipment.
Most power batteries have aluminum casings. It is known that the absorption rate of aluminum casings by lasers is very low, making welding difficult. Generally, it requires a higher power for laser welding. Additionally, it needs to address issues such as bulging during welding, porosity, fire explosion, and internal bubble problems.
In the laser welding processing of power batteries, welding process technicians will select suitable lasers and welding process parameters based on the customer's battery materials, shapes, thicknesses, and tensile requirements, including welding peak, speed, welding head tilt angle, waveform, etc., to set reasonable laser welding process parameters to ensure that the final welding effect meets the requirements of power battery manufacturers.
For the welding of square batteries, the most common problems occur at the corners. However, based on SHINHOP's application experience and related equipment, these issues can be well resolved, provided that the welding speed is slowed down. In contrast, cylindrical batteries do not have this issue, allowing for confident and bold welding. However, the difficulty increases when integrating battery modules later. Therefore, when welding power batteries, users need to consider whether to use cylindrical or square aluminum casing battery modules, which depends on the existing equipment or purchasing SHINHOP welding processing system equipment to solve the aforementioned problems.

Features of SHINHOP Power Battery Welding Machine and Aluminum to Nickel Laser Welding Machine:
1: Compatible integration, all in one.
The key process in the production of power batteries is to integrate the positive and negative electrodes, separators, and electrolyte materials into a whole, turning all raw materials into battery cells through welding, PACK battery modules, and finally becoming the power battery's finished product, which is applied in consumer electronics, electric bicycles, electric vehicles, and all tools in the new energy field. Therefore, its quality and safety are related to the user's personal safety interests.
2: Changing traditional backward welding processing methods.
Before upgrading to the era of laser welding, the welding of power battery packs relied on methods such as ultrasonic and resistance welding. Starting in 2014, laser welding technology began to be applied, experiencing multiple technological eras. The choice of welding method directly relates to the quality and safety of the battery and costs. From a developmental perspective, laser welding technology is undoubtedly the safest and most efficient welding method, ensuring the consistency, safety, and stability of battery quality. Especially for power batteries, which have many critical welding points and complex processes, even a small welding error can lead to safety and quality issues for the entire power pack. Today, the successful application of professional power battery PACK laser welding machines will bring higher standards of battery quality, safety, reliability, and further enhance service life, injecting new hope into the development of new energy vehicles.
3: More efficient.
Power battery welding equipment can be divided into three types:
Pilot equipment: Pilot equipment is basically a single machine semi-automatic operation platform, used for testing and small batch production of initial pilot products.
Fully automatic workstation: Mostly a dual-sword combination mode, with a laser main unit plus semi-closed or fully closed workstations. Each workstation is generally equipped with multi-station fixture tooling, suitable for various processes of power battery laser welding and battery pack welding in a fully automatic system.
Fully automatic production line: An upgraded version of the fully automatic workstation, connecting multiple workstations to form a complete intelligent automated production line for cell welding or battery pack welding.
4: Higher battery quality and safety.
A good battery pack should not crack, leak, smoke, bulge, catch fire, or explode. The most common issue is the heating of the battery cells, which can sometimes lead to electrolyte leakage and fire. This is often seen in incidents like mobile explosions, primarily due to the failure of the battery explosion-proof valve, also known as the explosion-proof hole, which does not function properly. This is especially true for those who like to watch movies and videos on their phones while charging, as it tends to generate more heat.

If users utilize the SHINHOP battery laser welding production line, the welding hazards of its components will be well addressed. Ensuring user safety and eliminating safety hazards in battery usage is the wish of all battery manufacturers.
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