1. Description

The lithium battery safety monitoring module is a product used for early warning of lithium battery thermal runaway fire and emergency alarm during the fire. During operation and charging, lithium batteries are prone to battery heating, short circuit, leakage, wire overload, damage and fire of electrical components. Therefore, real-time monitoring and alarm of lithium battery fires are important means to ensure personal and property safety.

Lithium-ion battery fire prevention and control products have 485/CAN bus output or switch signal output functions. Through the built-in fire detection sensor, the gas, smoke, particulate matter, ambient temperature and other signals in the protection area are monitored in real time and reported to the display terminal or instrument, so as to promptly notify the operation and maintenance personnel of the fire detection situation of the battery during storage and use.

Lithium-ion battery fire prevention and control products can analyze and monitor the gas composition of the air in the protection area, so as to provide early warning of fire signals in the protection area in advance. By monitoring toxic and flammable gases, smoke and particulate matter, early warning of thermal runaway of lithium batteries can be carried out; by monitoring the ambient temperature signal, emergency alarm can be issued during the development of fire; and by using the gas, smoke and temperature composite fire detection device, the fire location can be informed in a timely and accurate manner. In this way, real-time monitoring and alarm of lithium battery fires can be carried out in an all-round manner through multiple means.

2. Technical Parameters

3. System Solution

This product monitors early fire hazards and fires in lithium battery boxes in real time, sends alarm information to the outside world in a timely manner, and triggers fire extinguishing automatically/manually to suppress fires in battery boxes, integrating hidden danger reporting, fire identification, and emergency fire extinguishing.

The product is small in size, easy to install, supports multiple protocol outputs, and has flexible installation methods. It can add adapters according to customer needs and flexibly change the installation size; the product's operating voltage range is DC9~36V, and it can adopt a power supply mode of nearby power supply to reduce restrictions on installation locations.

Solution 1: Single detection device solution

The detection device is installed in the lithium battery box and has gas, temperature, and smoke detection alarm functions. It is connected to the BMS system through the CAN/RS485 bus and uploads detection data regularly. The detector can also be used as a control device to control the start and stop of the fire extinguishing equipment. It supports up to 24V5A active output and dry contact input.

Solution 2: Detection device + controller (can be used with our controller) solution

The controller receives the detection device signal through the 485/CAN bus. When the detection device alarms, the controller sends an audible and visual alarm signal. The controller is connected to the fire extinguishing control device, and the fire extinguishing device can be manually and electrically (in advance). In an emergency, the release of the fire extinguishing agent can be directly controlled.

4. Dimension

The battery safety monitoring module has gas, temperature, and smoke detection alarm functions. It can monitor the changes of electrolyte gas, combustion characteristic gas, smoke, temperature, and other parameters in the lithium battery box in real time. It uses multi-sensor data fusion algorithms to determine whether there is a fire hazard or a fire has occurred, and issue graded alarm information. It is usually installed in the battery box.

Figure 2, Dimensions of the detection device, the terminal is a 3.81mm plug-in terminal

(unit: mm)