[0032] Example: In this example, monitoring, prevention, and safety protection of 3 batteries are used as an example. In practical applications, more batteries can be used.
[0033] Such as figure 1 , figure 2 As shown, a battery thermal runaway monitoring, prevention and safety protection system includes a high temperature alarm monitoring part, a thermal runaway prevention and rescue part, a thermal runaway safety protection part, a power supply 2, a controller 1, and the battery 8 is connected to the high temperature The high temperature temperature monitoring chain 6 of the alarm monitoring part, the preventive rescue temperature monitoring chain 9 and the connection circuit 17 of the thermal runaway prevention and rescue section, and the pressure monitoring device 15 of the thermal runaway safety protection section is set on the connection circuit 17 of the thermal runaway prevention and rescue section The sound and light alarm 5 of the high temperature alarm monitoring part, the drive pump 14 on the connection circuit 17 of the thermal runaway prevention and rescue section, and the fire protection system 16 of the thermal runaway safety protection section are respectively connected to the controller 1, and the controller 1 is connected to the power supply 2. , Control the actions of each part through the controller 1; when any battery temperature reaches the set temperature T1, the high temperature alarm monitoring part automatically sends out an audible and visual alarm, and when any battery temperature reaches the set temperature T2, automatically starts thermal runaway prevention and rescue Part, to prevent the further development of thermal runaway, when any battery pressure reaches the set pressure P1, the thermal runaway safety protection part is automatically activated to prevent fire; among them: T1 is the high temperature alarm setting temperature, T2 is thermal runaway prevention and rescue Set temperature, P1 is the set pressure of battery thermal runaway.
[0034] Such as image 3 As shown, the high temperature alarm monitoring part includes a high temperature temperature monitoring chain and an acousto-optic alarm 5. The high temperature temperature monitoring chain 6 is composed of high temperature hot melts 7 arranged in or on the battery 8 in series, and the high temperature temperature monitoring chain 6 has two ends And the sound and light alarm 5 are connected to the controller 1. When the temperature of all the batteries 8 is not higher than the set temperature T1, the high temperature temperature monitoring chain 6 is the channel, and the high temperature temperature monitoring chain 6 outputs a high level signal to the controller 1. , The temperature of battery 8 is normal; when the temperature of any battery 8 is higher than the set temperature T1, the high temperature temperature monitoring chain 6 is disconnected, and a low-level signal is output to the controller 1. If the temperature of battery 8 is too high, the sound and light alarm will be controlled The device 5 gives an audible and visual alarm.
[0035] Each battery 8 is arranged with one or more high-temperature hot-melt parts 7, and when a plurality of them are arranged, they are connected in series.
[0036] Such as Figure 4 As shown, the thermal runaway prevention and rescue part includes a prevention and rescue temperature monitoring chain 9, a connecting pipeline, a drive pump 14, a liquid storage tank 13, and a one-way valve 11; the prevention and rescue temperature monitoring chain 9 is arranged in each battery 8 The internal preventive rescue hot melt 10 is connected in series, and the two ends of the preventive rescue temperature monitoring chain 9 are connected to the controller 1; each battery 8 is connected in parallel to the connecting pipeline through the preventive rescue hot melt 10 to seal the connecting pipeline The two ends of the connecting pipeline are respectively connected to the liquid storage tank 13, one end of the pipeline is provided with a one-way valve 11, and the other end of the pipeline is provided with a driving pump 14, each battery 8 is formed between the connecting pipeline and the liquid storage tank 13. Circulation loop
[0037] When the temperature of any battery 8 is higher than the set temperature T2, the rescue hot-melt 10 on it melts, and the rescue temperature monitoring chain 9 is disconnected. The sealed connection pipeline is opened and a low-level signal is output to the controller 1. It is determined that the temperature of the battery 8 is too high and the heat is out of control, then the drive pump 14 is controlled to drive the electrolyte of the battery 8 into the storage tank 13 through the connecting pipeline; otherwise, the prevention and rescue temperature monitoring chain 9 is the pathway, and the prevention and rescue heat The connection pipeline sealed by the fuse 10 is closed to prevent the rescue temperature monitoring chain from outputting a high level signal to the controller.
[0038] The liquid storage tank 13 is equipped with a cooling liquid, and is provided with a space for receiving the battery electrolyte to prevent the electrolyte from flowing or spraying around, and to cool the electrolyte.
[0039] A pressure relief valve is installed on the top of the liquid storage tank 13 for pressure relief when the pressure of the liquid storage tank exceeds the safety pressure.
[0040] The one-way valve 11 is connected in series on the connecting pipe 17 to ensure the one-way flow of the electrolyte of all batteries 8.
[0041] Such as Figure 5 As shown, the thermal runaway safety protection part includes a pressure monitoring device and a fire fighting system. The pressure monitoring device is connected in series on the connecting pipeline to monitor the pressure of all batteries. The pressure signal terminal of the pressure monitoring device and the fire control system control terminal are connected to control The controller receives the signal from the pressure monitoring device and processes it. When the pressure of any battery reaches the set pressure P1, the battery is thermally out of control and the rescue fails and major hazards will occur. The controller controls the fire-fighting system to start to protect the battery. Safeguard.
[0042] Since the batteries 8 connected by the connecting pipe 17 are connected in parallel, any battery 8 can form a circulation loop with the liquid storage tank 13, the one-way valve 11, the pressure monitoring device 15, and the driving pump 14 through the connecting pipe 17.
[0043] The pressure monitoring device 15 is connected in series on the connecting pipe 17 to monitor the pressure of all batteries 8 and connect the pressure signal to the controller 1. The controller 1 receives the signal from the pressure monitoring device 15 and processes it. When the pressure reaches the set pressure P1, it is considered that the battery 8 is thermally out of control and the rescue has failed and major hazards will occur. The controller controls the fire fighting system 16 to take safety protection measures for the battery 8 .
[0044] Power supply 2 to controller 1, communication module 3, sound and light alarm 5, high temperature temperature monitoring chain 6, high temperature hot melt part 7, preventive rescue temperature monitoring chain 9, preventive rescue hot melt part 10, drive pump 14, pressure monitoring device 15 and 16 fire protection system power supply.
[0045] The controller 1 can also be connected to the control center 4 of the system through the communication module 3. The communication module 3 realizes the communication between the controller 1 and the control center 4, and transmits the signals monitored by the controller 1 and the control commands issued to the control center 4. , And then transfer the command issued by the control center 4 to the controller 1 to control the work of each part.
[0046] The communication module 3, the sound and light alarm 5, the high temperature hot melt part 7, the preventive rescue hot melt part 10, the drive pump 14, the pressure monitoring device 15 and the fire fighting system 16 described in this example are all existing purchased parts.
[0047] The control method of the present invention includes the following steps:
[0048] Step S101: After the system is powered on, it automatically starts to monitor all current batteries, and sends the monitoring signal to the controller, and the controller communicates with the control center through the communication module;
[0049] Step S102: When the temperature of any battery is higher than the set temperature T1, the high-temperature temperature monitoring chain is disconnected, and a low-level signal I is output to the controller, and the controller controls the sound and light alarm to emit sound and light alarms;
[0050] Step S103: When the temperature of any battery is higher than the set temperature T2, the preventive rescue temperature monitoring chain is disconnected, a low-level signal II is output to the controller, and the controller controls the driving pump to drive the electrolyte into the storage tank;
[0051] Step S104: When the pressure reaches the set pressure P1, output a high level signal III to the controller, and the controller automatically starts the fire fighting system.
