CN108969934B - Fire extinguishing device and battery module - Google Patents
Fire extinguishing device and battery module Download PDFInfo
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- CN108969934B CN108969934B CN201810982270.5A CN201810982270A CN108969934B CN 108969934 B CN108969934 B CN 108969934B CN 201810982270 A CN201810982270 A CN 201810982270A CN 108969934 B CN108969934 B CN 108969934B
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- 239000007921 spray Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/42—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with mechanical connection between sensor and actuator, e.g. rods, levers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the invention provides a fire extinguishing device and a battery module, and relates to the technical field of battery thermal management. The fire extinguishing device comprises a spray head, a pipeline, a first support piece, a first temperature sensing structure, a spring, a baffle, an air inlet pipe and a first temperature guide piece, wherein the first support piece is provided with a first through hole for the pipeline to pass through and a groove for the baffle to be embedded to extrude or partition the pipeline; the pipeline passes through first through-hole, and the shower nozzle is installed in the one end of pipeline, and the intake pipe is installed in the other end of pipeline, and the one end of first temperature sensing structure and the one end of spring all are connected with the baffle, and the other end is all installed in first support piece, and the baffle is installed in the recess, and first temperature-conducting piece is connected with first temperature sensing structure and contacts with the battery module. According to the invention, the temperature on the battery module is conducted to the temperature sensing structure through the temperature conducting piece, so that the battery module is cooled or extinguished when the temperature on the battery module exceeds the safety threshold value, and the use safety of the battery module is ensured.
Description
Technical Field
The invention relates to the technical field of battery thermal management, in particular to a fire extinguishing device and a battery module.
Background
The electric automobile is used as one of important products of new energy, has the characteristics of good performance, no pollution and the like, is used more and more widely, and is characterized in that the electric automobile is a power battery system, the temperature of the power battery system is the most important parameter affecting the service performance of the power battery system, but in the use process of the battery system, the phenomena of overhigh battery temperature, battery fire and the like easily occur, the performance of the power battery is affected, and even safety accidents can be possibly accompanied.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a fire extinguishing device and a battery module to solve the above problems.
In one aspect, an embodiment of the present invention provides a fire extinguishing device, which is applied to a battery module, where the fire extinguishing device includes a spray head, a pipe, a first support member, a first temperature sensing structure, a spring, a baffle plate, and a first temperature guiding member, and a first through hole for the pipe to pass through and a groove for the baffle plate to be embedded in to squeeze or partition the pipe are formed in the first support member;
the first temperature-sensing structure is characterized in that the pipeline is arranged on the first support piece through the first through hole, one end of the pipeline is externally connected with an air inlet pipe, the other end of the pipeline is connected with the spray head, one end of the first temperature-sensing structure and one end of the spring are connected with the baffle, the other end of the first temperature-sensing structure is arranged on the first support piece and connected with the baffle, the baffle is arranged in the groove, and the first temperature-conducting piece is connected with the first temperature-sensing structure and contacted with the battery module;
when the temperature of the battery module is conducted to the first temperature sensing structure by the first temperature conducting piece and the temperature value reaches a safety threshold, the first temperature sensing structure expands to extrude the baffle and stretch the spring, so that the baffle is far away from the pipeline, and then the air inlet pipe is communicated with the spray head to spray inert gas to the battery module for fire extinguishment or cooling.
In an alternative preferred embodiment of the present invention, the first temperature sensing structure includes an elastic member provided with a receiving cavity, and the receiving cavity of the elastic member is filled with a thermal expansion material capable of thermal expansion.
In an alternative preferred embodiment of the present invention, the first temperature sensing structure includes a first temperature sensing element and a second temperature sensing element, the springs include a first spring and a second spring, one end of the first temperature sensing element and one end of the second temperature sensing element are both connected with the baffle, the other end of the first temperature sensing element is both installed on the first support, one end of the first spring and one end of the second spring are both connected with the baffle, and the other end of the second spring is both installed on the first support, where the first spring and the first temperature sensing element are located on one side of the baffle, and the second spring and the second temperature sensing element are located on the other side of the baffle.
In an alternative preferred embodiment of the present invention, the baffle includes a first sub-baffle and a second sub-baffle, one end of the first sub-baffle is disposed in the groove, the other end of the first sub-baffle is connected with the second sub-baffle, one end of the first temperature sensing element and one end of the second temperature sensing element are both connected with the second sub-baffle, one ends of the first spring and the second spring are respectively connected with the second sub-baffle, the first spring and the first temperature sensing element are located at one side of the second sub-baffle, and the second spring and the second temperature sensing element are located at the other side of the second sub-baffle.
In a preferred embodiment of the present invention, the battery module includes a plurality of sub-modules, the fire extinguishing device further includes a second support member, a second temperature sensing structure, and a second temperature guiding member, the second support member is provided with a second through hole for the pipe to pass through, the second temperature guiding member is connected with the second temperature sensing structure and the first temperature sensing structure respectively, the second temperature guiding member is assembled with the sub-modules, one end of the pipe connected with the air inlet pipe is arranged on the second support member through the first through hole, and the second temperature sensing structure is arranged at one end of the pipe connected with the air inlet pipe;
when the temperature value reaches a safety threshold, the first temperature sensing structure expands to extrude the baffle plate and stretch the spring, so that the baffle plate is far away from the pipeline to ensure that the air inlet pipe is communicated with the spray head, and meanwhile, the second temperature sensing structure extrudes one end of the pipeline to enable the pipeline to incline the first supporting piece, so that the spray head inclines and sprays inert gas towards the sub-module to be cooled or extinguished to extinguish or cool.
In a preferred embodiment of the present invention, the second temperature sensing structures and the second temperature guiding members are respectively plural and are in one-to-one correspondence, each second temperature sensing structure is respectively disposed on the pipeline along the circumferential direction of the outer wall of the pipeline, and each second temperature guiding member is respectively disposed on each sub-module and is respectively connected with the first temperature sensing structure and the second temperature sensing structure to be used for cooling or extinguishing a fire of the sub-module at different positions.
In a preferred embodiment of the present invention, the second temperature sensing structure includes a first connecting rod, a second connecting rod and a temperature sensing portion, two opposite sides of the temperature sensing portion are respectively connected with the first connecting rod and the second connecting rod, a free end of the first connecting rod is connected with an outer wall of the pipeline, and the second temperature guiding member is connected with the temperature sensing portion.
In a preferred embodiment of the present invention, the fire extinguishing apparatus further includes a cylindrical member provided with a third through hole, one end surface of the cylindrical member is connected to one end of the pipe, the other end surface of the cylindrical member is connected to the air intake pipe, the air intake pipe is communicated with the pipe through the third through hole, and the second temperature sensing structure is disposed on a circumferential surface of the cylindrical member.
In a preferred embodiment of the present invention, the first temperature-guiding member and the second temperature-guiding member each include a bulb and a capillary tube, and one end of the capillary tube is connected to the bulb, and the other end is connected to the first temperature-sensing structure or/and the second temperature-sensing structure.
On the other hand, the embodiment of the invention also provides a battery module, which comprises the fire extinguishing device, a mounting assembly and a plurality of sub-modules, wherein the fire extinguishing device is mounted on the mounting assembly, and a nozzle in the fire extinguishing device can spray inert gas towards different sub-modules under the extrusion of a second temperature sensing structure.
Compared with the prior art, the embodiment of the invention provides the fire extinguishing device and the battery module, wherein the fire extinguishing device is skillfully designed, and the temperature on the battery module can be conducted to the temperature sensing structure through the temperature guide piece, so that the battery module is cooled or extinguished when the temperature on the battery module exceeds a threshold value, and the use safety of the battery module is ensured. In addition, for the battery module comprising a plurality of sub-modules, the invention can also accurately detect the temperature, cool down or extinguish the fire aiming at each sub-module, thereby ensuring the use safety of the battery module.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a fire extinguishing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the first temperature sensing structure shown in fig. 1.
Fig. 3 is a schematic structural diagram of a battery module to which the fire extinguishing apparatus according to the present embodiment is applied.
Fig. 4 is a schematic diagram of another structure of a fire extinguishing apparatus according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of another view of the fire extinguishing apparatus shown in fig. 4.
Fig. 6 is a schematic structural diagram of the second temperature sensing structure shown in fig. 4.
Fig. 7 is a schematic view illustrating a structure of another view of the battery module shown in fig. 3.
Fig. 8 is a schematic view of the mating structure between the pipe and the second support shown in fig. 4.
Icon: 10-a fire extinguishing device; 11-a spray head; 12-piping; 13-a first support; 14-a first temperature sensing structure; 140-a first temperature sensing element; 141-a second temperature sensing element; 142-elastic member; 15-a spring; 150-a first spring; 151-a second spring; 16-baffle; 160-a first sub-baffle; 161-a second sub-baffle; 18-a second support; 19-a second temperature sensing structure; 190-a first link; 191-a second link; 192-a temperature sensing part; 21-a cylindrical member; 22-rolling elements; 24-battery module; 25-sub-module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The embodiment of the invention provides a fire extinguishing device 10 applicable to a battery module 24, wherein the fire extinguishing device 10 comprises a spray head 11, a pipeline 12, a first support member 13, a first temperature sensing structure 14, a spring 15, a baffle 16 and a first temperature guide member, wherein the first support member 13 is provided with a first through hole for the pipeline 12 to pass through and a groove for the baffle 16 to be embedded in so as to squeeze or block the pipeline 12. The pipeline 12 is installed in the first support piece 13 through the first through hole, the external intake pipe of one end of pipeline 12, the other end with shower nozzle 11 is connected, the one end of first temperature sensing structure 14 with the one end of spring 15 all with baffle 16 is connected, the other end all install in the first support piece 13 is connected, just baffle 16 install in the recess, first temperature-conducting piece with first temperature sensing structure 14 is connected and with battery module 24 contacts.
When the first temperature-guiding member conducts the temperature of the battery module 24 to the first temperature-sensing structure 14 and the temperature value reaches the safety threshold, the first temperature-sensing structure 14 expands to squeeze the baffle 16 and lengthen the spring 15, so that the baffle 16 is away from the pipe 12, and the air inlet pipe is communicated with the nozzle 11 to spray inert gas to the battery module 24 for fire extinguishing or cooling. In this embodiment, through smart design of the fire extinguishing apparatus 10, safety of the battery module 24 in use can be ensured. It can be appreciated that the safety threshold can be flexibly set according to actual requirements, for example, 100 degrees, 150 degrees, etc.
Specifically, the air inlet pipe is used for introducing gas, liquid, etc. for extinguishing or cooling into the pipe 12. Alternatively, the battery module 24 having an excessively high temperature or a fire may be subjected to a temperature lowering or fire extinguishing process using an inert gas such as carbon dioxide. In addition, the air inlet pipe may be a soft pipe, a hard pipe, or the like, and the present embodiment is not limited herein.
Further, the pipe 12 is used for introducing the gas, the liquid, etc. for fire extinguishing or cooling into the nozzle 11 for spraying, in this embodiment, according to different actual requirements, there are various practical embodiments of the pipe 12, for example, the pipe 12 may be a soft pipe, and when cooling or fire extinguishing is not required, the baffle 16 presses the pipe 12 to deform the pipe 12, so as to avoid the gas, etc. in the air inlet pipe flowing into the nozzle 11; otherwise, the first temperature sensing structure 14 presses the baffle 16 to make the baffle 16 separate from the pipeline 12, so as to recover deformation of the pipeline 12, and ensure that gas and the like can circulate.
For another example, the pipe 12 may further include a first sub-pipe and a second sub-pipe, where the baffle 16 is located between the first sub-pipe 12 and the second sub-pipe 12 to block the pipe 12 and prevent the gas in the gas inlet pipe from flowing into the nozzle 11 when the temperature is not required to be reduced or the fire is extinguished; otherwise, the first temperature sensing structure 14 presses the baffle 16 to make the baffle 16 separate from the first sub-pipe 12 and the second sub-pipe 12, so that the first sub-pipe 12 and the second sub-pipe 12 are communicated, and gas and the like can flow to the nozzle 11.
Further, the structure of the first supporting member 13 may be flexibly set according to the actual requirement, for example, in this embodiment, the first supporting member 13 may be designed according to the actual structure of the pipe 12, for example, the first supporting member 13 may be a hollow cube, or may be a solid other structure, etc., which is not limited herein. In addition, the shape of the first through hole matches the cross-sectional shape of the pipe 12.
Further, in one embodiment, the first temperature-guiding member is configured to sense the temperature of the battery module 24 and conduct the sensed temperature to the first temperature sensing structure 14, and in this embodiment, the first temperature-guiding member may include a temperature sensing bulb and a capillary tube, where one end of the capillary tube is connected to the temperature sensing bulb, and the other end of the capillary tube is connected to the first temperature sensing structure 14.
The first temperature sensing structure 14 adopts the principle of thermal expansion and cold contraction to realize extrusion of the baffle 16, so that the baffle 16 is far away from the pipeline 12 or extrudes/cuts off the pipeline 12. As an embodiment, referring to fig. 2 in combination, the first temperature sensing structure 14 includes an elastic member 142 provided with a receiving cavity, and a connecting rod connected to the baffle 16 and the first support 13, and the receiving cavity of the elastic member 142 is filled with a thermal expansion material capable of expanding with heat and contracting with cold, and the thermal expansion material may be a gas or the like.
The spring 15 is used for preventing the first temperature sensing structure 14 from pressing the baffle 16 and separating from the first supporting member 13 when the first temperature sensing structure 14 is expanded by heating, and for pulling the baffle 16 down and pressing or isolating the pipe 12 by recovering elastic deformation when the temperature in the first temperature sensing structure 14 is reduced.
Further, according to practical requirements, in order to make the pulling force or the pressing force of the first temperature sensing structure 14 acting on the baffle 16 more balanced, and simultaneously ensure the reliability and stability of the fire extinguishing apparatus 10 in use, please refer to fig. 1 again, in this embodiment, the first temperature sensing structure 14 includes a first temperature sensing member 140 and a second temperature sensing member 141, the spring 15 may include a first spring 150 and a second spring 151, one end of the first temperature sensing member 140 and one end of the second temperature sensing member 141 are both connected with the baffle 16, the other end of the first temperature sensing member 140 is both installed on the first support 13, one end of the first spring 150 and one end of the second spring 151 are both connected with the baffle 16, and the other end of the second spring 151 is both installed on the first support 13, where the first spring 150 and the first temperature sensing member 140 are located on one side of the baffle 16, and the second spring 151 and the other side of the baffle 16 are located on the second temperature sensing member 141.
In addition, as an embodiment, the baffle 16 may include a first sub-baffle 160 and a second sub-baffle 161, one end of the first sub-baffle 160 is disposed in the groove, the other end is connected to the second sub-baffle 161, one end of the first temperature sensing element 140 and one end of the second temperature sensing element 141 are both connected to the second sub-baffle 161, one ends of the first spring 150 and the second spring 151 are respectively connected to the second sub-baffle 161, the first spring 150 and the first temperature sensing element 140 are disposed on one side of the second sub-baffle 161, and the second spring 151 and the second temperature sensing element 141 are disposed on the other side of the second sub-baffle 161. The shape and size of the groove are matched with those of the second sub-baffle 161, which is not limited herein.
Further, when the battery module 24 includes a plurality of sub-modules 25, in order to implement cooling or fire extinguishing treatment on the sub-modules 25 located at different positions by the fire extinguishing device 10, please refer to fig. 3, 4 and 5, in this embodiment, the battery module 24 includes a plurality of sub-modules 25, the fire extinguishing device 10 further includes a second support member 18, a second temperature sensing structure 19 and a second heat conducting member, the second support member 18 is provided with a second through hole through which the pipe 12 passes, the second heat conducting member is connected with the second temperature sensing structure 19 and the first temperature sensing structure 14 respectively, the second heat conducting member contacts with the sub-modules 25, an end of the pipe 12 connected with the air inlet pipe is disposed on the second support member 18 through the first through hole, and the second temperature sensing structure 19 is disposed on an end of the pipe 12 connected with the air inlet pipe.
Wherein, when the second temperature-guiding member transmits the temperature of the sub-module 25 to the first temperature-sensing structure 14 and the second temperature-sensing structure 19, and the temperature value reaches the safety threshold, the first temperature-sensing structure 14 expands to press the baffle 16 (such as the first sub-baffle 160) and lengthen the spring 15, so that the baffle 16 is far away from the pipe 12 to ensure that the air inlet pipe is communicated with the nozzle 11, and at the same time, the second temperature-sensing structure 19 presses one end of the pipe 12 to tilt the pipe 12 and the first support member 13, so that the nozzle 11 is tilted and inert gas is injected toward the sub-module 25 to be cooled or extinguished to extinguish fire or cool. It should be noted that the second temperature guiding member and the first temperature guiding member have the same structure, and this embodiment is not described herein again.
Optionally, the design principle of the second temperature sensing structure 19 is the same as that of the first temperature sensing structure 14, specifically, as shown in fig. 6, the second temperature sensing structure 19 includes a first link 190, a second link 191, and a temperature sensing portion 192, two opposite sides of the temperature sensing portion 192 are respectively connected with the first link 190 and the second link 191, a free end of the first link 190 is connected with an outer wall of the pipe 12, and the second temperature guiding member is connected with the temperature sensing portion 192. The temperature sensing portion 192 is an elastic member 142 having a receiving cavity, and the receiving cavity is forcibly filled with a thermal expansion material capable of expanding with heat and contracting with cold. Wherein, the first link 190 and the second link 191 are both made of rigid materials, and the free end of the second link 191 is fixed to the mounting assembly in the battery module 24, so that the first link 190 can further press the pipe 12 to incline under the pressing of the temperature sensing part 192. It should be noted that, when the second temperature sensing structures 19 are 8 as shown in fig. 4, in order to ensure that the second temperature sensing structures 19 can press the pipe 12 after expansion so that the pipe 12 and the first support member 13 are inclined, in this embodiment, the actual connection manner between the second temperature sensing structures 19 and the pipe 12 is as follows: when the temperature sensing part 192 in the second temperature sensing structure 19 is not expanded, a gap exists between the first link 190 in the second temperature sensing structure 19 and the pipe 12, and when the temperature sensing part 192 is expanded, the first link 190 is pressed to move toward the pipe 12 and press the pipe 12, so that the pipe 12 and the first support member 13 are inclined, wherein the size of the gap can be determined according to the inclination angle of the spray head 11, and the embodiment is not limited herein.
In practical implementation, for the battery module 24 including a plurality of sub-modules 25, the second temperature sensing structures 19 and the second temperature guiding members are respectively plural and in one-to-one correspondence, each second temperature sensing structure 19 is respectively disposed in the pipeline 12 along the circumferential direction of the outer wall of the pipeline 12, and each second temperature guiding member is respectively disposed in each sub-module 25 and is respectively connected with the first temperature sensing structure 14 and the second temperature sensing structure 19 to be used for cooling or extinguishing a fire of the sub-module 25 at different positions.
For example, referring to fig. 3 and 7 in combination, assuming that the battery module 24 includes 9 sub-modules 25, the second heat conducting members and the second temperature sensing structures 19 may be 8, and each of the second heat conducting members is configured to detect the temperatures of the 8 sub-modules 25 located at the periphery of the battery module 24 and conduct the temperatures to the first temperature sensing structures 14 and the second temperature sensing structures 19, respectively, and if the temperatures of the sub-modules 25 located in the first row and the first column are abnormal, the temperatures transferred to the first temperature sensing structures 14 and the second temperature sensing structures 19 by the second heat conducting members will cause the expansion of the thermal expansion materials located in the first temperature sensing structures 14 and the second temperature sensing structures 19, wherein the thermal expansion materials in the second temperature sensing structures 19 will press the pipe 12 and the first supporting members 13 to tilt in a direction opposite to the abnormal sub-modules 25, so that the spray head 11 faces the abnormal sub-modules 25; at the same time, the first temperature sensing structure 14 presses the second sub-baffle 161 to drive the second sub-baffle 161 to move away from the first supporting member 13, so that the gas or liquid in the conduit passes through and is sprayed from the spray head 11 to the abnormal sub-module 25, so as to cool or extinguish the fire of the sub-module 25.
It will be appreciated that, for the sub-module 25 located at the center of the battery module 24, the spray head 11 may be opposite to the center sub-module 25 in a normal state, and when an abnormality occurs in the center sub-module, the first temperature sensing mechanism directly presses the second sub-baffle 161 to drive the second sub-baffle 161 to move in a direction away from the first supporting member 13, so that gas or liquid in the conduit passes through and is sprayed from the spray head 11 to the abnormal sub-module 25, so as to cool or extinguish the sub-module 25.
Further, referring to fig. 8, the second supporting member 18 is configured to fix the fire extinguishing device 10, and limit the pipe 12 when the second temperature sensing structure 19 presses the pipe 12 to incline the pipe 12 and the first supporting member 13. Optionally, in order to ensure that the pipe 12 can tilt relative to the second support 18, in this embodiment, the fire extinguishing device 10 may further comprise a rolling member 22, and the pipe 12 is connected to the second support 18 by the rolling member 22, wherein the rolling member 22 may be, but is not limited to, a universal bearing.
In addition, as shown in fig. 8, in one embodiment, the fire extinguishing apparatus 10 may further include a cylindrical member 21 provided with a third through hole, one end surface of the cylindrical member 21 is connected to one end of the pipe 12, the other end surface is connected to the air inlet pipe, the air inlet pipe is communicated with the pipe 12 through the third through hole, and the second temperature sensing structure 19 is disposed on a circumferential surface of the cylindrical member 21. It should be noted that the cylindrical member 21 may be replaced by other shaped members, such as rectangular posts, prisms, etc.
In this embodiment, when the number of the second temperature sensing structures 19 is plural, each of the second temperature sensing structures 19 may be disposed on the circumferential surface of the cylindrical member 21, where the distribution manner of each of the second temperature sensing structures 19 on the cylindrical member 21 may be flexibly designed according to the actual positional relationship of each of the sub-modules 25, such as uniform distribution, etc., which is not limited herein.
Further, based on the design and description of the fire extinguishing apparatus 10, as shown in the drawings, the embodiment of the present invention further provides a battery module 24, which includes the fire extinguishing apparatus 10, a mounting assembly and a plurality of sub-modules 25, wherein the fire extinguishing apparatus 10 is mounted on the mounting assembly, and the nozzle 11 in the fire extinguishing apparatus 10 can spray inert gas toward the different sub-modules 25 under the extrusion of the second temperature sensing structure 19.
It is to be understood that, since the battery module 24 has the same technical features as the fire extinguishing device 10, the detailed description of the battery module 24 will refer to the description of the fire extinguishing device 10, and the present embodiment will not be repeated here.
In summary, the embodiment of the invention provides the fire extinguishing device 10 and the battery module 24, wherein the temperature on the battery module 24 can be conducted to the temperature sensing structure through the temperature conducting member by ingenious design of the fire extinguishing device 10, so that the battery module 24 is cooled or extinguished when the temperature on the battery module 24 exceeds the threshold value, and the use safety of the battery module 24 is ensured. In addition, for the battery module 24 including a plurality of sub-modules 25, the present invention can also perform accurate temperature detection, temperature reduction or fire extinguishing for each sub-module 25, ensuring the safety of the battery module 24.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should also be noted that the azimuth or positional relationship indicated by the terms "inner" and "outer" and the like are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The fire extinguishing device is applied to a battery module and is characterized by comprising a plurality of sub-modules, wherein the fire extinguishing device comprises a spray head, a pipeline, a first supporting piece, a first temperature sensing structure, a spring, a baffle, a first temperature guiding piece, a second supporting piece, a second temperature sensing structure and a second temperature guiding piece, the first temperature sensing structure comprises the first temperature sensing piece and the second temperature sensing piece, the spring comprises the first spring and the second spring, and a first through hole for the pipeline to pass through and a groove for the baffle to be embedded in order to extrude or cut off the pipeline are formed in the first supporting piece;
the first temperature-sensing structure is characterized in that the pipeline is arranged on the first support piece through the first through hole, one end of the pipeline is externally connected with an air inlet pipe, the other end of the pipeline is connected with the spray head, one end of the first temperature-sensing structure and one end of the spring are connected with the baffle, the other end of the first temperature-sensing structure is arranged on the first support piece, the baffle is arranged in the groove, and the first temperature-conducting piece is connected with the first temperature-sensing structure and is in contact with the battery module; one end of the first temperature sensing piece and one end of the second temperature sensing piece are connected with the baffle, the other end of the first temperature sensing piece is mounted on the first supporting piece, one end of the first spring and one end of the second spring are connected with the baffle, and the other end of the first spring is mounted on the first supporting piece, wherein the first spring and the first temperature sensing piece are located on one side of the baffle, and the second spring and the second temperature sensing piece are located on the other side of the baffle;
when the first temperature guide piece conducts the temperature of the battery module to the first temperature sensing structure and the temperature value reaches a safety threshold, the first temperature sensing structure expands to extrude the baffle plate and lengthen the spring, so that the baffle plate is far away from the pipeline, and the air inlet pipe is communicated with the spray head to spray inert gas to the battery module for fire extinguishment or cooling;
the spring is used for preventing the first temperature sensing structure from extruding the baffle plate and separating from the first supporting piece when the first temperature sensing structure is heated and expanded, and pulling the baffle plate down and extruding or isolating the pipeline by recovering elastic deformation when the temperature in the first temperature sensing structure is reduced;
the second support piece is provided with a second through hole for the pipeline to pass through, the second temperature guide piece is respectively connected with the second temperature sensing structure and the first temperature sensing structure, the second temperature guide piece is in contact with the sub-die set, one end of the pipeline connected with the air inlet pipe is arranged on the second support piece through the second through hole, and the second temperature sensing structure is arranged at one end of the pipeline connected with the air inlet pipe;
when the temperature value reaches a safety threshold, the first temperature sensing structure expands to extrude the baffle plate and stretch the spring, so that the baffle plate is far away from the pipeline to ensure that the air inlet pipe is communicated with the spray head, and meanwhile, the second temperature sensing structure extrudes one end of the pipeline to enable the pipeline to incline the first supporting piece, so that the spray head inclines and sprays inert gas towards the sub-module to be cooled or extinguished to extinguish fire or cool.
2. The fire extinguishing apparatus according to claim 1, wherein the first temperature sensing structure comprises an elastic member provided with a receiving chamber, and the receiving chamber of the elastic member is filled with a heat expansion material capable of being expanded by heat.
3. The fire extinguishing apparatus according to claim 1, wherein the baffle includes a first sub-baffle and a second sub-baffle, one end of the first sub-baffle is disposed in the groove, the other end of the first sub-baffle is connected to the second sub-baffle, one end of the first temperature sensing member and one end of the second temperature sensing member are both connected to the second sub-baffle, one ends of the first spring and the second spring are respectively connected to the second sub-baffle, the first spring and the first temperature sensing member are disposed on one side of the second sub-baffle, and the second spring and the second temperature sensing member are disposed on the other side of the second sub-baffle.
4. The fire extinguishing apparatus according to claim 1, wherein the second temperature sensing structure and the second temperature guiding members are respectively plural and are in one-to-one correspondence, and each second temperature guiding member is respectively disposed in each sub-module, and is respectively connected with the first temperature sensing structure and the second temperature sensing structure for cooling or extinguishing a fire of the sub-module at different positions.
5. The fire extinguishing apparatus according to claim 4, wherein the second temperature sensing structure includes a first link, a second link, and a temperature sensing portion, opposite sides of the temperature sensing portion are connected to the first link and the second link, respectively, a free end of the first link is connected to an outer wall of the pipe, and the second temperature guide is connected to the temperature sensing portion.
6. The fire extinguishing apparatus according to claim 1, further comprising a cylindrical member provided with a third through hole, one end face of the cylindrical member being connected to one end of the pipe, the other end face being connected to the air intake pipe, the air intake pipe being communicated with the pipe through the third through hole, the second temperature sensing structure being provided on a circumferential surface of the cylindrical member.
7. The fire extinguishing apparatus according to claim 1, wherein the first temperature guide member and the second temperature guide member each include a bulb and a capillary tube, one end of the capillary tube is connected to the bulb, and the other end is connected to the first temperature sensing structure or/and the second temperature sensing structure.
8. A battery module, characterized by comprising the fire extinguishing device, a mounting assembly and a plurality of sub-modules according to any one of claims 1-7, wherein the fire extinguishing device is mounted on the mounting assembly, and a nozzle in the fire extinguishing device sprays inert gas towards different sub-modules under the extrusion of a second temperature sensing structure.
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| CN201810982270.5A CN108969934B (en) | 2018-08-27 | 2018-08-27 | Fire extinguishing device and battery module |
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| CN201810982270.5A CN108969934B (en) | 2018-08-27 | 2018-08-27 | Fire extinguishing device and battery module |
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| CN108969934A CN108969934A (en) | 2018-12-11 |
| CN108969934B true CN108969934B (en) | 2023-11-21 |
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| CN110420418B (en) * | 2019-09-06 | 2024-02-20 | 华霆（合肥）动力技术有限公司 | Fire extinguishing device and power supply equipment |
| CN110690530B (en) * | 2019-10-14 | 2021-12-31 | 东软睿驰汽车技术（沈阳）有限公司 | Safety device and power battery |
| CN113437389B (en) * | 2021-06-23 | 2022-06-10 | 西安电子科技大学芜湖研究院 | Battery liquid cooling system with deformation detection and fire extinguishing functions |
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| CN105727480A (en) * | 2016-03-28 | 2016-07-06 | 王振科 | Automatic nozzle |
| CN107968209A (en) * | 2016-10-18 | 2018-04-27 | 南京金邦动力科技有限公司 | A kind of automobile lithium battery group protective device for continuing radiating and cooling |
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| US7498953B2 (en) * | 2004-11-16 | 2009-03-03 | Salser Jr Floyd Stanley | Smart transmitter for utility meters |
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| CN105727480A (en) * | 2016-03-28 | 2016-07-06 | 王振科 | Automatic nozzle |
| CN107968209A (en) * | 2016-10-18 | 2018-04-27 | 南京金邦动力科技有限公司 | A kind of automobile lithium battery group protective device for continuing radiating and cooling |
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