Intelligent charging cabinet for power tools with automatic power-off
This intelligent safety charging cabinet is mainly used for charging, storing and conducting various tests on various lithium batteries and tools containing lithium batteries. The test chamber is equipped with intelligent monitoring devices that collect the infrared temperature of rechargeable batteries, smoke inside the cabinet, socket voltage and current. All kinds of monitoring data are connected to the network and can be observed on-site through the display screen. Abnormal behaviors can be uploaded to the network for work and there will be alarm lights on site to indicate. It is also equipped with heat dissipation and smoke exhaust fans, and optional perfluorohexanone and other interlocking fire extinguishing devices to provide fire protection for operators and instruments during sensitive tests.
Specification list：
| 1、Box size | W700×D500×H1400mm; (Subject to the actual customized size)； |
| 2、Material of the box body | The equipment box body is all made of galvanized steel plate with a thickness of 1.2mm (the partition layer is made of insulating flame-retardant bakelite material and is hollowed out)； |
| 3、Surface treatment | Baking varnish treatment and silk-screen printing of the customer's logo; |
| 4、Box door | The outer box door should avoid hitting the head when opening, be fireproof and equipped with anti-disconnection chains； |
| 5、Hardware fixing hole | Customized； |
| 6、Casters | 3-inch super heavy-duty - lead screw brake universal wheel； |
| 7、Seal | No seal； |
| 8、Bottom | Lockable casters, explosion-proof for movement and fixation； |
| 9、Control Panel | Equipped with a display screen and buttons (Display screen: voltage, current, temperature, etc.) Buttons: Operation buttons (restoring 220V supply, etc.), dual-color alarm light; |
| 10、Alarm indicator light | The sound and light alarm indicator light on the top of the cabinet for indicating the safety status； |
| 11、Internal power supply | AC voltage: 220V, frequency: 50+/-5HZ； |
| 12、Weight | About 80kg； |
| 13、Charging socket | For the first and second layers, install 10 flame-retardant PDU sockets. Install 6 flame-retardant PDU sockets on the third layer. The PDU socket is required to be fire-resistant and flame-retardant, with CCC certification； |
| 14、Delayed power-off | The charging time can be set by the hour on the screen. When the time is up, the 220V power supply will be automatically cut off； |
| 15、Alarm and power failure | When the temperature or smoke alarm inside the box is triggered, the 220V internal power supply will be automatically cut off. The power-off temperature can be set on the screen； |
| 16、Overcurrent power-off | When the total charging power inside the box exceeds the set safety value, the 220V internal power supply will be automatically cut off. The power-off current can be set on the screen； |
| 17、Linked heat dissipation | When the battery temperature of the tool being charged inside the box is relatively high, the ventilation system is activated to help dissipate heat from the battery. The ventilation system shuts down when the temperature drops. The ventilation fan needs to have an anti-blockage alarm function； |
| 18、Smoke exhaust system | An exhaust fan is installed on the side of the box. When the box is charging and generating heat, it dissipates heat. When the smoke concentration reaches the set level, the smoke detector alarm is triggered, and the smoke can be discharged outside the box； |
| 19、Fire extinguishing system | The box is equipped with an optional interlocking fire extinguishing device. When smoke and infrared temperature inside the box alarm simultaneously, the fire extinguishing system will be triggered to start, achieving active fire suppression； |
| 20、Internet of Things System | The temperature, smoke, current, voltage and alarm information of the equipment can be uploaded to the supplier's monitoring platform through the network interface (a paid service that requires an Internet connection)； |
| 21、Usage environment | 0~50℃，10~90%R.H； |
| 22、Appearance color | The color is grey, and the overall appearance is elegant, beautiful and harmonious. |
The response action logic of the charging cabinet：
| Serial number | Trigger condition | Equipment | Perform an action |
| 1 | Normal operating state | Alarm light | Turn on the green light |
| PDU socket | Power on | ||
| Fire extinguisher solenoid valve | no | ||
| Exhaust fan | no | ||
| 2 | Infrared temperature first-level alarm | Alarm light | Turn on the yellow light |
| PDU socket | no | ||
| Fire extinguisher solenoid valve | no | ||
| Exhaust fan | no | ||
| 3 | Smoke detector triggers alarm (smoke detector dials to self-recovery mode) | Three-color lamp | Turn on the red light and honk the horn |
| PDU socket | Power outage | ||
| Fire extinguisher solenoid valve | no | ||
| Exhaust fan | Open | ||
| 4 | When the current exceeds 10A or an infrared secondary alarm is triggered | Three-color lamp | Turn on the red light and honk the horn |
| PDU socket | Power outage | ||
| Fire extinguisher solenoid valve | no | ||
| Exhaust fan | no | ||
| 5 | Infrared level 2 alarm and smoke detector trigger alarm (smoke detector dials to self-recovery mode) | Three-color lamp | Turn on the red light and honk the horn |
| PDU socket | Power outage | ||
| First, open the solenoid valve of the fire extinguisher until the infrared secondary alarm disappears, and then turn on the fan to exhaust smoke | |||
Note: When it is necessary to activate the active fire extinguishing capability of perfluorohexanone during the test, please ensure that the room is well-ventilated, maintain the ability to evacuate personnel, and avoid causing breathing discomfort to people.
Charging cabinet parameter Settings：
Parameters can be set by touching the screen.
1. Charging time (default is continuous. When timing is selected, set 1 to 12 hours); The charging time is uniformly set on the three layers.
2. Heat dissipation temperature: (default 40 degrees Celsius, select temperature adjustment step 5 degrees Celsius, range 30~50) The multi-layer cabinets dissipate heat at a uniform temperature. Take the highest temperature detected by the sensor as the standard;
3. Power-off temperature: (Default 55 degrees Celsius, select temperature adjustment step 5 degrees Celsius, range 50~80); The multi-layer cabinets dissipate heat at a uniform temperature. Take the highest temperature detected by the sensor as the standard;
4. Power-off current (default 10A, select to adjust the current step within the range of 1A from 5 to 20A, and set the total charging current uniformly for three layers;
Usage method：
This device is equipped with multiple functional modules for collection, alarm, linkage and fire extinguishing. Through simple Settings in various scenarios, it can achieve the predetermined protective functions.
This device can withstand the explosion of a single lithium-ion battery cell with a capacity of no more than 10Ah or the explosion of a single battery pack with a capacity of no more than 100wh. It can be applied when the total energy of multiple tool batteries does not exceed 1kwh. For the safe charging of larger lithium-ion batteries, please use equipment with a higher protection level.
1. Use the internal PDU socket for safe charging
The internal PDU socket can be used to charge power tools, electronic products, power banks and other connected adapters. If the current and voltage of the PDU socket are too high, or if the device overheats and reaches the specified temperature limit, and the thermal imaging probe detects a high-temperature object, the safety charging cabinet will cut off the 220V power supply input to the PDU, thereby providing protection for charging devices such as power tools. Prevent overheating behavior from spreading and causing accidents.
2. Safety duty for battery charging using external devices
If an external power strip is used for charging or other matters and there is concern that the device may overheat and continue charging, leading to safety accidents, etc., the external power strip can be connected to the control board of the safety charging cabinet, allowing the safety charging cabinet to supply 220 power to the power strip. If the voltage or current is too high, the power supply of the power strip will be disconnected to prevent accidents.
After training, professional users can remove the PDU wiring inside the equipment and replace it with external wiring to actively cut off the power supply of external devices in case of an emergency.
3. Voltage and current acquisition and control system
【Monitoring target】: The power strip connected to the current acquisition module (PDU inside the safety charging cabinet)
【Trigger condition】: When the current acquisition module detects that the total current of the power strip exceeds the set value, such as 10A (approximately 2.2KW), overcurrent protection is triggered and the 220V power supply is cut off.
【Verification method】: Use high-power electrical appliances or tools, such as water heaters, hot air guns, microwave ovens, etc., and start them simultaneously to trigger overcurrent protection and achieve power-off.
4. Perfluorohexanone active fire extinguishing System (Optional accessory, optional when active fire extinguishing function is required)
An optional set of intelligent perfluorohexanone fire extinguishing device can be installed inside the box. Carry out coordinated fire extinguishing for incidents such as equipment fires during the charging process. Users can also choose to install other economically viable interlocking active fire extinguishing Settings.
Fire extinguishing action test: Generate temperature alarms and smoke alarms in sequence. The methods are as described in Sections 1 and 2 of this section. Check whether the fire linkage is normal. When the solenoid valve lights up the action red light, it indicates that the action is successful.
Note: Both infrared thermal imaging alarm and smoke detector alarm are required. Only when both alarm simultaneously will the fire extinguishing system take action to extinguish the fire.
