Battery static temperature monitoring

1. Application background

In the production process of lithium-ion batteries, standing at room temperature and at high temperature are important process steps in battery cell manufacturing, which have an important impact on battery performance, safety and consistency.

The traditional static process mainly relies on manual regular inspections or local display records of equipment, which has the following problems:

•Battery storage environment temperature cannot be controlled in real time;

• Abnormal temperature rise is not detected in time;

•Multiple batches of battery temperature data are difficult to trace;

•Manual inspection efficiency is low and risks are easily missed;

•Lack of long-term data analysis and inability to optimize process parameters.

The M2M IoT platform connects temperature acquisition modules, industrial gateways, sensors, and upper-level management systems to achieve real-time temperature collection, centralized monitoring, abnormal alarms, and historical data tracing during the battery's resting process, providing battery manufacturing companies with intelligent temperature control management solutions.

2. System architecture

The system consists of on-site perception layer, data transmission layer and platform management layer:

1. Data collection layer

Deployed via high-precision temperature sensors on:

•Battery storage cabinet

•High temperature aging room

•Constant temperature warehouse

•Battery storage area

•Module/PACK test area

Real-time collection:

•Ambient temperature

•Battery surface temperature

•Internal temperature of the box

•Multi-point temperature distribution data

Support:

•NTC

•PT100/PT1000

•Thermocouple

•Digital temperature sensor

2. Edge communication layer

Field device networking through industrial gateways:

Support:

•RS485 Modbus RTU

•Ethernet Modbus TCP

•MQTT

•OPCUA

•Industrial communication protocols such as EtherCAT

Upload on-site temperature data to the M2M cloud platform to realize data interconnection between equipment and platforms.

3. M2M IoT platform

Platform implementation:

•Real-time temperature monitoring

•Historical data storage

•Temperature curve analysis

•Abnormal alarm

•Data traceability

•Centralized management of multiple devices

Help enterprises establish a digital management system for the battery resting process.

3. Application of static temperature monitoring at room temperature

Application scenarios

After the battery cell completes the liquid injection, formation and other processes, it needs to be left at room temperature under specified environmental conditions to fully stabilize the internal materials of the battery.

The M2M platform monitors the ambient temperature of the static area in real time to ensure that the process environment meets the requirements.

Main functions

1. Real-time collection of multi-point temperatures

Targeted at:

•Station rack in different positions

•Battery from different batches

•Different regional environments

Perform multi-channel temperature acquisition.

Real time display:

Parameter function

Current temperature real-time monitoring

Maximum temperature risk judgment

Minimum temperature environment uniformity analysis

Average temperature process evaluation

2. Temperature trend analysis

The platform automatically generates:

•Real-time temperature curve

•24 hour trend curve

•Batch temperature change recording

Help engineers analyze environmental stability.

3. Temperature abnormality alarm

When the temperature exceeds the process setting range:

For example:

•High temperature alarm

•Low temperature alarm

•Abnormal temperature fluctuations

The platform automatically pushes:

•Alarm on PC

•Mobile APP reminder

•SMS/email notification

Avoid batch production of abnormal batteries.

4. High Temperature Standing Temperature Monitoring Application

Application scenarios

High-temperature standing is mainly used to simulate the performance changes of batteries in high-temperature environments and verify battery stability, safety and reliability.

Temperature changes need to be continuously monitored during the process to prevent abnormal local temperature rise.

Main functions

1. Real-time monitoring of battery temperature

Collected through high-precision temperature sensor:

•Cell surface temperature

•Module temperature

•Box ambient temperature

Real-time upload platform.

Support:

•Multi-cabinet management

•Multi-channel simultaneous acquisition

•Temperature data refreshed in seconds

2. Abnormal temperature rise warning

The platform determines according to the set rules:

For example:

•The temperature exceeds the set value

•Abnormal temperature rise rate

•Single point temperature difference is too large

Automatically trigger alarm.

Applies to:

•Battery thermal runaway risk warning

•Abnormal battery cell screening

•Process parameter optimization

3. Temperature data traceability

The platform automatically saves:

•Battery batch

•Standing time

•Temperature curve

•Alarm recording

•Operation records

Form a complete quality traceability file.

Satisfy:

•Battery quality analysis

•Process Validation

•Customer review

•Production traceability requirements

5. Core functions of the platform

1. Real-time monitoring

Centralized display:

•Number of static cabinets

•Online device status

•Temperature status

•Alarm message

Achieve transparent management of production sites.

2. Historical data analysis

Support:

•Temperature trend query

•Data export

•Batch comparison

•Exception analysis

Assist process optimization.

3. Intelligent alarm management

Support:

•Temperature over-limit alarm

•Sensor failure alarm

•Communication abnormality alarm

•Data loss alarm

Improve production safety.

4. Device remote management

Support:

•View device status remotely

•Parameter configuration

•Gateway management

•Equipment lifecycle management

Reduce maintenance costs.

6. Application value

Improve production safety

Real-time monitoring of temperature changes during battery resting process, timely detection of abnormal temperature rises, and reduction of safety risks.

Improve production efficiency

Reduce manual inspections and achieve centralized management of multiple areas and multiple devices.

Strengthen quality traceability

Completely save battery resting temperature data to provide basis for quality analysis.

Promote smart manufacturing

Through the M2M platform, equipment networking and digital management of production data are realized, helping battery companies build smart factories.

Typical application scenarios

•Leave the lithium battery cells at room temperature

•Leave the battery at high temperature

•Battery aging test

•Battery warehouse management

•Module/PACK environment monitoring

•Battery reliability test