CN211935267U - Battery box cooling fire extinguishing control system - Google Patents
Battery box cooling fire extinguishing control system Download PDFInfo
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- CN211935267U CN211935267U CN201921933099.5U CN201921933099U CN211935267U CN 211935267 U CN211935267 U CN 211935267U CN 201921933099 U CN201921933099 U CN 201921933099U CN 211935267 U CN211935267 U CN 211935267U
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- fire extinguishing
- extinguishing agent
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- cooling fire
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Abstract
The utility model discloses a battery box cooling and fire extinguishing control system, which comprises a cooling and fire extinguishing agent storage box, a power device, a detection module, an injection device, a control module and a power module; the cooling fire extinguishing agent storage box is used for storing a cooling fire extinguishing agent; the power device is used for providing injection pressure for the cooling fire extinguishing agent; the detection module comprises a pressure sensor and a fire detector; the spraying device comprises a cooling fire extinguishing agent conveying pipe, a cooling fire extinguishing agent spray head arranged at the tail end of the cooling fire extinguishing agent conveying pipe and an electromagnetic valve arranged on the cooling fire extinguishing agent conveying pipe; the cooling fire extinguishing agent nozzle is arranged in the battery box; the control module receives the data measured by the detection module, analyzes and processes the data to judge whether thermal runaway or fire disaster occurs at present, and is used for sending start-stop commands to the power device and the injection device; the power module is used for supplying power to the whole system. Therefore, the utility model discloses a battery box cooling fire extinguishing control system can intervene the cooling in advance, and multiple injection avoids the conflagration to take place.
Description
Technical Field
The utility model relates to a field of putting out a fire especially relates to a battery box control system that puts out a fire that cools down.
Background
The electric driving of the vehicle is a great trend of environmental protection, the weight of the vehicle greatly influences the load carrying capacity and the endurance capacity of the vehicle, and in order to improve the load carrying capacity and the endurance capacity of the vehicle, the higher the energy density of the battery is, the better the energy density is, and therefore most electric vehicles select the lithium ion battery with high energy density.
The high energy density of lithium ion batteries also leads to potential fire hazard, and thermal diffusion is very easy to cause once thermal runaway occurs, and the diffusion speed is very high. In order to put out a fire caused by a lithium ion battery in time in the prior art, one scheme is that a large amount of cooling fire extinguishing agent is sprayed at one time to suppress and extinguish the fire, however, once a large amount of cooling fire extinguishing agent is sprayed into a battery box quickly, the pressure in the battery box is increased rapidly, an explosion-proof valve of the battery box is triggered to be opened automatically to release the pressure, the battery box which is originally in a closed state is changed into an open state, external oxygen enters the box body, the oxygen content in the battery box is increased, the fire in the box is possibly spread out of the box, and greater loss is caused. The other scheme is that a plurality of fire extinguishing devices are arranged in the system to realize multiple spraying of the agent, the spraying times of the agent and the number of the fire extinguishing devices are closely related, the manufacturing cost is high, and the popularization and the application are not facilitated. The extinguishing device medicament in two kinds of schemes is the single and spouts and puts the back that finishes, and extinguishing device can't continue to use again.
In addition, after the lithium ion battery fire is extinguished, the reignition of the lithium ion battery is very easy to occur in a short time, and the reignition of the lithium ion battery fire cannot be suppressed again by the fire prevention and control device at the moment because the cooling fire extinguishing agent is completely sprayed during the reignition of the lithium ion battery fire.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: how to more effectively prevent and control the conflagration of lithium cell battery case.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a battery box cooling fire extinguishing control system, includes cooling fire extinguishing agent storage tank, power device, detection module, injection apparatus, control module, power module, control module with power device, detection module, injection apparatus, power module electricity are connected.
The cooling fire extinguishing agent storage tank is used for storing a cooling fire extinguishing agent; the cooling fire extinguishing agent storage tank comprises a storage tank body, a piston arranged in the storage tank body and a piston connecting rod hinged with the piston;
the power device is used for providing injection pressure for the cooling fire extinguishing agent, and ensuring that the cooling fire extinguishing agent can be injected in sufficient quantity and under sufficient pressure;
the detection module comprises a pressure sensor and a fire detector;
the spraying device comprises a cooling fire extinguishing agent conveying pipe, a cooling fire extinguishing agent spray head arranged at the tail end of the cooling fire extinguishing agent conveying pipe and an electromagnetic valve arranged on the cooling fire extinguishing agent conveying pipe; the electromagnetic valve is a pressure-resistant electromagnetic valve, and can be started and stopped for multiple times; the cooling fire extinguishing agent conveying pipe is connected with the cooling fire extinguishing agent storage box and the battery box; the cooling fire extinguishing agent nozzle is arranged in the battery box.
The control module receives the data measured by the detection module, analyzes and processes the data to judge whether thermal runaway or fire disaster occurs at present, and is used for sending start-stop commands to the power device and the injection device;
the power module is used for supplying power to the whole system.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Preferably, the power device comprises a driving motor and a gear set, wherein the output end of the driving motor is fixedly connected with the input gear of the gear set, a screw hole is formed in the middle of the output gear of the gear set, a thread is formed in the piston connecting rod, the piston connecting rod is arranged in the screw hole in the middle of the output gear in a penetrating mode, and the screw hole is matched with the thread on the piston connecting rod.
After the control panel received the start demand of detecting signal, start driving motor, driving motor drives gear train and rotates, and output gear's rotation drives piston rod and removes to realize promoting the piston and impel fire extinguishing agent forward and form the malleation, pressure sensor detects the pipeline internal pressure and reaches the setting value, and repayment signal to control panel, control send opening signal to solenoid valve, and the solenoid valve is opened and is spouted fire extinguishing agent, guarantees that the fire extinguishing agent of cooling can the sufficient pressure jet away. After the cooling fire extinguishing agent is sprayed once, the control module sends a stop command to the power device and the spraying device to stop spraying the agent. And when the system judges that the medicament needs to be sprayed again, the steps are repeated, so that the requirement of spraying the medicament for multiple times is met.
Further, the power device comprises a stepping motor and an eccentric wheel; the output end of the stepping motor is connected with the eccentric wheel, a convex edge is arranged on the rim of the eccentric wheel, a pulley block matched with the convex edge is arranged at the end part of the piston connecting rod, and the pulley block is clamped on the convex edge. Utilize eccentric wheel centrifugal distance to form linear displacement linkage connecting rod, utilize step motor accurate rotation function to drive the eccentric wheel single rotation 30 degrees, utilize eccentric wheel and piston connecting rod to produce linear displacement and promote the medicament in the fire extinguishing agent case and form the normal pressure, pressure sensor surveys the pipeline internal pressure and reaches the setting value, and the feedback signal is to the control panel, and control sends opening signal to the solenoid valve, and the solenoid valve is opened and is spouted fire extinguishing agent.
Preferably, the power supply comprises a main power supply and a standby battery pack, the main power supply is used for supplying power during normal operation, and the standby battery pack is used for supplying power to the system when the main power supply fails and the power is cut off.
Preferably, the temperature-reducing fire-extinguishing agent can be perfluorohexanone, and also can be other temperature-reducing inhibitors or clean gas temperature-reducing fire-extinguishing agents, such as hexafluoropropane and heptafluoropropane.
Compared with the prior art, the utility model discloses following technological effect has:
can spout into the temperature reduction inhibitor in time to the battery box when detecting temperature rising in the battery box, for the battery box cooling, intervene in advance before taking place the thermal runaway, can more effectually prevent that the condition of battery box thermal runaway from taking place, eliminate the conflagration hidden danger.
Through power device pressurization for cooling fire extinguishing agent in real time, cooperation detection device measuring data under the prerequisite of being equipped with single fire extinguishing agent storage device, can realize spraying many times, when the conflagration breaing out, especially under the easy condition of after combustion of lithium cell, can realize putting out a fire many times, avoid once only spouting all cooling fire extinguishing agents into the battery box, and the available condition of no fire extinguishing agent when the lithium cell after combustion. The spread of fire can be more effectively controlled, and the fire risk is reduced.
The temperature-reducing fire extinguishing agent can be stored at normal pressure or lower pressure during daily storage, so that the risk caused by long-time high-pressure storage is avoided.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of the battery box cooling and fire extinguishing control system of the present invention;
fig. 2 is a schematic structural view of embodiment 2 of the temperature-reducing fire-extinguishing control system for a battery box of the utility model;
FIG. 3 is a schematic view showing the engagement of the projections of the eccentric wheel rim with the pulley block in embodiment 2;
in the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a cooling fire extinguishing agent storage tank;
1-1, a tank body;
1-2, a piston;
2-1, driving a motor;
2-2-1, an input gear;
2-2-2, an output gear;
2-2-2-1, screw holes;
2-3, a piston connecting rod;
2-3-1, pulley block;
2-6, an eccentric wheel;
2-6-1, convex edge;
3-1, a pressure sensor;
3-2, fire detector;
4-1, a cooling fire extinguishing agent conveying pipe;
4-2, a cooling fire extinguishing agent nozzle;
4-3, an electromagnetic valve;
5. a control module;
6-1, a main power supply;
6-2, and a spare battery pack.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1:
fig. 1 is a schematic structural diagram of embodiment 1. The battery box cooling and fire extinguishing control system comprises a cooling and fire extinguishing agent storage box 1, a power device, a detection module, an injection device, a control module 5 and a power module, wherein the control module 5 is electrically connected with the power device, the detection module, the injection device and the power module.
The cooling fire extinguishing agent storage box 1 is used for storing a cooling fire extinguishing agent; the temperature-reducing fire-extinguishing agent 1 can be perfluorohexanone, and also can be other temperature-reducing inhibitors or clean gas temperature-reducing fire-extinguishing agents, such as hexafluoropropane and heptafluoropropane. The cooling fire extinguishing agent storage tank comprises a storage tank body 1-1 and a piston 1-2 arranged in the storage tank body.
The power device is used for providing injection pressure for the cooling fire extinguishing agent, and ensuring that the cooling fire extinguishing agent can be injected in sufficient quantity and under sufficient pressure;
the spraying device comprises a cooling fire extinguishing agent conveying pipe 4-1, a cooling fire extinguishing agent nozzle 4-2 arranged at the tail end of the cooling fire extinguishing agent conveying pipe and an electromagnetic valve 4-3 arranged on the cooling fire extinguishing agent conveying pipe; the electromagnetic valve 4-3 selects an electromagnetic valve with working pressure meeting the jet pressure, and the cooling fire extinguishing agent conveying pipe is connected with a cooling fire extinguishing agent storage box and a battery box; the cooling fire extinguishing agent nozzle is arranged in the battery box.
The detection module comprises a pressure sensor 3-1 and a fire detector 3-2; the pressure sensor 3-1 is arranged at the front end of the cooling fire extinguishing agent nozzle 4-2, and the fire detector 3-2 is arranged in the battery box.
The control module 5 receives the data measured by the detection module, analyzes and processes the data to judge whether thermal runaway or fire disaster occurs at present, and is used for sending start-stop commands to the power device and the injection device;
the power module is used for supplying power to the whole system. The power supply comprises a main power supply 6-1 and a standby battery pack 6-2, the main power supply 6-1 is connected with the vehicle-mounted generator set, the main power supply 6-1 supplies power during normal work, and the standby battery pack 6-2 supplies power to the system when the main power supply 6-1 fails and is powered off.
In the embodiment, the power device comprises a driving motor 2-1, a gear set and a piston connecting rod 2-3 connected with the piston 1-2, wherein the output end of the driving motor is fixedly connected with an input gear 2-2-1 of the gear set, a screw hole 2-2-2-1 is formed in the middle of an output gear 2-2-2 of the gear set, a thread is formed in the piston connecting rod 2-3, the piston connecting rod 2-3 is arranged in the screw hole 2-2-2-1 in the middle of the output gear 2-2-2 in a penetrating manner, and the screw hole 2-2-2-1 is matched with the thread on the piston connecting rod 2-3;
after the control panel received the start demand of detecting signal, the starter motor, the motor drives the input gear and rotates, input gear and output gear meshing, accelerate output gear rotational speed, output gear's rotation makes the piston connecting rod that wears to establish wherein remove, the realization impels the fire extinguishing agent forward and forms the malleation, pressure sensor surveys the pipeline internal pressure and reaches the setting value, repayment signal to control panel, control sends opening signal to solenoid valve, the solenoid valve is opened and is spouted the fire extinguishing agent, guarantee that the fire extinguishing agent of cooling can the sufficient pressure jet away. After the cooling fire extinguishing agent is sprayed once, the control module sends a stop command to the power device and the spraying device to stop spraying the agent. And when the system judges that the medicament needs to be sprayed again, the steps are repeated, so that the requirement of spraying the medicament for multiple times is met.
Example 2:
fig. 2 is a schematic structural diagram of embodiment 2. The power device comprises a driving motor 2-1, the driving motor is a stepping motor, an eccentric wheel 2-6 and a piston connecting rod 2-3 connected with the piston 1-2, the output end of the stepping motor is connected with the eccentric wheel 2-6, a convex edge 2-6-1 is arranged on the rim of the eccentric wheel 2-6, a pulley block 2-3-1 matched with the convex edge is arranged at the end part of the piston connecting rod 2-3, and the pulley block 2-3-1 is clamped on the convex edge 2-6-1. The accurate rotation function of the stepping motor is utilized to drive the eccentric wheel to rotate for 30 degrees at a single time, the eccentric wheel 2-6 and the piston connecting rod 2-3 are utilized to generate linear displacement to push the medicament in the fire extinguishing agent box to form positive pressure, the pressure sensor detects that the pressure in the pipeline reaches a set value, a feedback signal is sent to the control panel, the control panel sends an opening signal to the electromagnetic valve, the electromagnetic valve is opened to spray the fire extinguishing agent, and the cooling fire extinguishing agent can be sprayed out under sufficient pressure. After the cooling fire extinguishing agent is sprayed once, the control module sends a stop command to the power device and the spraying device to stop spraying the agent. And when the system judges that the medicament needs to be sprayed again, the steps are repeated, so that the requirement of spraying the medicament for multiple times is met.
Fig. 3 is a schematic diagram of the matching of the protrusion 2-6-1 of the eccentric wheel rim and the pulley block 2-3-1 at the end of the piston connecting rod 2-3 in the embodiment 2.
The utility model discloses a battery box cooling fire extinguishing control system can in time spout into the cooling inhibitor to the battery box when detecting the temperature rising in the battery box, for the battery box cooling, intervene in advance before taking place the thermal runaway, can more effectually prevent that the condition of battery box thermal runaway from taking place, eliminates the conflagration hidden danger.
The cooling fire extinguishing agent is pressurized in real time through the power device, the data measured by the detection device are matched, multiple injection can be realized, multiple fire extinguishment can be realized when a fire disaster occurs, particularly under the condition that the lithium battery is easy to reburn, all the cooling fire extinguishing agents are prevented from being sprayed into the battery box at one time, and the situation that the fire extinguishing agents are not available when the lithium battery reburns is avoided. The spread of fire can be more effectively controlled, and the fire risk is reduced.
The temperature-reducing fire extinguishing agent can be stored at normal pressure or lower pressure during daily storage, so that the risk caused by long-time high-pressure storage is avoided.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. A battery box cooling and fire extinguishing control system is characterized by comprising a cooling and fire extinguishing agent storage box, a power device, a detection module, an injection device, a control module and a power module, wherein the control module is electrically connected with the power device, the detection module, the injection device and the power module;
the cooling fire extinguishing agent storage tank is used for storing a cooling fire extinguishing agent; the cooling fire extinguishing agent storage tank comprises a storage tank body and a piston arranged in the storage tank body;
the power device is used for providing injection pressure for the cooling fire extinguishing agent, and ensuring that the cooling fire extinguishing agent can be injected in sufficient quantity and under sufficient pressure;
the detection module comprises a pressure sensor and a fire detector;
the spraying device comprises a cooling fire extinguishing agent conveying pipe, a cooling fire extinguishing agent spray head arranged at the tail end of the cooling fire extinguishing agent conveying pipe and an electromagnetic valve arranged on the cooling fire extinguishing agent conveying pipe; the cooling fire extinguishing agent conveying pipe is connected with the cooling fire extinguishing agent storage box and the battery box; the cooling fire extinguishing agent nozzle is arranged in the battery box;
the control module receives the data measured by the detection module, analyzes and processes the data to judge whether thermal runaway or fire disaster occurs at present, and is used for sending start-stop commands to the power device and the injection device;
the power module is used for supplying power to the whole system.
2. The battery box cooling and fire extinguishing control system according to claim 1, wherein the power device comprises a driving motor, a gear set and a piston connecting rod connected with the piston, the output end of the driving motor is fixedly connected with the input gear of the gear set, a screw hole is formed in the middle of the output gear of the gear set, threads are formed on the piston connecting rod, the piston connecting rod is arranged in the screw hole in the middle of the output gear in a penetrating manner, and the screw hole is matched with the threads on the piston connecting rod.
3. The battery box cooling and fire extinguishing control system according to claim 1, wherein the power device comprises a stepping motor, an eccentric wheel and a piston connecting rod connected with the piston; the output end of the stepping motor is connected with the eccentric wheel, a convex edge is arranged on the rim of the eccentric wheel, a pulley block matched with the convex edge is arranged at the end part of the piston connecting rod, and the pulley block is clamped on the convex edge.
4. The battery box temperature-reducing and fire-extinguishing control system according to any one of claims 1-3, wherein the power supply comprises a main power supply and a backup battery pack.
5. The battery box temperature-reducing and fire-extinguishing control system according to any one of claims 1 to 3, wherein the temperature-reducing and fire-extinguishing agent is one of perfluorohexanone, hexafluoropropane and heptafluoropropane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933099.5U CN211935267U (en) | 2019-11-11 | 2019-11-11 | Battery box cooling fire extinguishing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933099.5U CN211935267U (en) | 2019-11-11 | 2019-11-11 | Battery box cooling fire extinguishing control system |
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| CN211935267U true CN211935267U (en) | 2020-11-17 |
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| CN201921933099.5U Active CN211935267U (en) | 2019-11-11 | 2019-11-11 | Battery box cooling fire extinguishing control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769294A (en) * | 2021-08-06 | 2021-12-10 | 合肥工业大学 | Novel new energy automobile battery package fire extinguishing systems |
| CN114849104A (en) * | 2022-04-22 | 2022-08-05 | 山东雷纳新材料工程有限公司 | Fire extinguishing device capable of continuously cooling through multiple-time spraying and control method |
-
2019
- 2019-11-11 CN CN201921933099.5U patent/CN211935267U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769294A (en) * | 2021-08-06 | 2021-12-10 | 合肥工业大学 | Novel new energy automobile battery package fire extinguishing systems |
| CN114849104A (en) * | 2022-04-22 | 2022-08-05 | 山东雷纳新材料工程有限公司 | Fire extinguishing device capable of continuously cooling through multiple-time spraying and control method |
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