With the improvement of environmental awareness and the development of new energy technology, more and more passenger ferries begin to use lithium batteries as power sources. However, the safety of lithium batteries has always been one of the focuses of people's attention. Starting from the characteristics and safety requirements of lithium battery passenger ferry, this paper will analyze its battery safety design to ensure the safety during the operation of the ship.

1. Characteristics of lithium battery passenger ferry

lithium battery Ferry is a kind of ship that uses lithium battery as power source and has the following characteristics:

• high energy density: lithium battery has high energy density and can provide sufficient power support;
• environmental protection and energy saving: Compared with traditional fuel power, lithium battery power is more environmentally friendly and energy saving;
• silent and comfortable: lithium battery powered ships operate more silently and comfortably.

2. Safety design requirements for lithium batteries

to ensure the safety of lithium battery passenger ferries, a series of safety design requirements must be followed, including but not limited:

• battery System Protection: protect the battery system to avoid external objects damaging the battery;
• battery Management System: Install an effective battery management system to monitor the battery status in real time to ensure safe operation;
• emergency measures: Design emergency measures, such as fire alarm system, battery quick cut-off device, etc., to ensure timely handling in case of emergency.

3. Safety design scheme of battery system

for lithium battery passenger ferry, the following battery system safety design scheme can be adopted:

• battery pack isolation design: divide lithium batteries into multiple battery pack, and reduce the impact of a single battery pack fault on the overall system through isolation design;
• temperature control system: install temperature sensor and temperature control device to monitor and control battery working temperature in real time;
• battery Monitoring System: configure the battery management system to monitor the battery in real time, including parameters such as voltage, temperature and status;
• protective device: set protective device around the battery system to prevent external collision and damage.

4. Safety design practice cases

A the passenger ferry took full consideration of safety issues in the design stage and adopted a strict safety design scheme. During the operation of the ship, through real-time monitoring of the battery management system and precise adjustment of the temperature control system, fire and safety accidents are effectively prevented and the safe operation of the ship is ensured.