(I) Basic principles and types of battery swapping technology

1. Basic principles

New energy ship batte ry swapping technology refers to quickly restoring the ship's endurance by replacing the ship's battery modules, rather than through traditional charging methods. The core of this technology lies in the rapid replacement of battery packs to ensure that the ship can continue to sail in a short period of time.

The basic principles of battery swapping technology include:

Battery pack standardization: In order to achieve rapid replacement, the battery pack needs to adopt a standardized design to ensure that the battery packs between different ships are interchangeable.

Quick connection and disconnection: The connection and disconnection between the battery pack and the ship need to be fast and reliable, and special quick connectors and disconnect devices are usually used.

Battery management system: During the battery replacement process, the BMS needs to monitor the status of the battery pack in real time to ensure the safety and performance of the battery pack.

2. Types of battery swapping technology

New energy ship battery swapping technology is mainly divided into the following types:

Overall replacement: The entire battery pack is replaced as a whole, which is suitable for ships with smaller battery packs. For example, some small electric outboard motors on the market currently have their own batteries. When the battery needs to be replaced, the whole battery of the main body can be replaced.

Modular replacement: The battery pack is composed of multiple modules, and a module can be replaced individually, which is suitable for ships with larger battery packs. Battery modules can be large or small. For example, some large electric transport ships currently make battery modules in the form of 20-foot standard containers. When replacement is needed, just replace some module batteries.

(II) Composition and workflow of the battery swap station

1. Composition of the battery swap station The new energy ship battery swap station mainly consists of the following parts:

Box battery storage area: used to store spare box power supplies to ensure that there are enough battery modules available for replacement.

Replacement equipment: including battery replacement platform, lifting equipment, quick connectors, etc., for quick replacement of battery packs.

Charging equipment: used to charge the replaced battery pack to ensure that the battery pack can be quickly restored to a usable state.

Monitoring system: real-time monitoring of the operating status of the battery swap station, including the status of the battery pack, the status of the replacement equipment, etc.

Safety system: including fire prevention, explosion prevention, leakage prevention and other safety measures to ensure the safe operation of the battery swap station.

2. Workflow of the battery swap station

Ship berthing: The ship enters the dock and docks at the designated berth.

Battery pack inspection: staff or automated equipment checks the status of the ship's battery pack and confirms that it needs to be replaced.

Battery pack replacement: use lifting equipment to quickly replace the box-type batteries on the ship.

Battery pack charging: send the replaced box-type batteries to the battery swap station for charging.

Ship leaves the station: After the box battery is replaced, the ship can leave the port and continue sailing.

(III) Development trend of battery swap technology

1. Standardization

Battery pack standardization: In order to achieve the interchangeability of battery packs, it is necessary to formulate unified battery pack standards, including size, interface, performance, etc.

Replacement equipment standardization: Replacement equipment also needs to be standardized to ensure that the equipment between different battery swap stations is interoperable.

2. Intelligence

Automated replacement: Use automated equipment to replace battery packs to improve replacement efficiency and safety.

Intelligent monitoring: Use intelligent monitoring systems to monitor the operating status of battery swap stations in real time, and promptly detect and handle abnormal situations.

Data analysis: Use big data analysis technology to optimize the operation and management of battery swap stations and improve resource utilization.

3. Safety

Safety standards: Formulate strict safety standards to ensure the safe operation of battery swap stations.

Safety technology: Use advanced safety technologies such as fire prevention, explosion prevention, and leakage prevention to prevent safety accidents.

Safety training: Provide safety training for staff to improve safety awareness and emergency response capabilities.

4. Networking

Battery swap station network: Establish a battery swap station network to achieve information sharing and collaborative work between different battery swap stations.

Remote monitoring: Remote management and control of the battery swap station can be achieved through remote monitoring technology.

Data sharing: Data sharing between the battery swap station and the ship and shore-based control center can be achieved through the data sharing platform.

Bosa Energy

Bosa Energy with 150GWH capacity and over 400,000 electric bus/utility vehicle application experience we are listing first 5 in China power battery industry. We cooperate with Yutong/Geely/Damiler etc.

We are also offering Container ESS systems and delivered 6GWh in 2024(=75,000 Model3 with 80kWh battery). In local market, we are offering OEM service for Changan, CALB, National grid, Ping Gao Electric , Xuji electronics, Ruineng electronics, they are our main Container ESS suppliers in China Market.

We are the most professional supplier of marine lithium batteries in China, and our export volume of marine batteries consistently ranks among the top three in China; We are also the top 1 exporter of lithium battery modules in China, specializing in providing various lithium battery module solutions.

For excellent quality and performance our products are popular in more than 30 countries in the world. We also have established warehouse in Germany and Netherlands to provide safety stock timely delivery for our customers.

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