CN113725552A - Battery with let out and explode device and have battery module who lets out and explode device - Google Patents

Battery with let out and explode device and have battery module who lets out and explode device Download PDF

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Publication number
CN113725552A
CN113725552A CN202110961206.0A CN202110961206A CN113725552A CN 113725552 A CN113725552 A CN 113725552A CN 202110961206 A CN202110961206 A CN 202110961206A CN 113725552 A CN113725552 A CN 113725552A
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CN
China
Prior art keywords
explosion venting
pipe
battery
battery module
explosion
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Pending
Application number
CN202110961206.0A
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Chinese (zh)
Inventor
刘毅
雷政军
张三学
蔡潇
郑高峰
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Shaanxi Olympus Power Energy Co Ltd
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Shaanxi Olympus Power Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi Olympus Power Energy Co Ltd filed Critical Shaanxi Olympus Power Energy Co Ltd
Priority to CN202110961206.0A priority Critical patent/CN113725552A/en
Publication of CN113725552A publication Critical patent/CN113725552A/en
Priority to PCT/CN2022/113263 priority patent/WO2023020571A1/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/358—External gas exhaust passages located on the battery cover or case
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/392—Arrangements for facilitating escape of gases with means for neutralising or absorbing electrolyte; with means for preventing leakage of electrolyte through vent holes
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

The invention provides a battery with an explosion venting device and a battery module with the explosion venting device, and belongs to the technical field of batteries. When the battery is out of control due to heat, the battery is a high-temperature heat source, the generated high-temperature combustible gas is released through the explosion release pipe, and the high-temperature combustible mixed gas is not in contact with the high-temperature heat source and the air in the whole process, so that the risk of fire is greatly reduced.

Description

Battery with let out and explode device and have battery module who lets out and explode device
Technical Field
The invention belongs to the technical field of batteries, relates to a battery explosion venting technology, and particularly relates to a battery with an explosion venting device and a battery module with the explosion venting device.
Background
The new energy battery is a power supply for providing a power source for tools, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and the like. However, when the battery is used, the battery is overheated, overcharged and overdischarged, which may cause heat collection inside the battery, and a large amount of heat is accumulated to cause temperature rise inside the battery, and when the temperature rises to the limit that the battery can bear, thermal runaway may occur, and when the battery is in thermal runaway, a large amount of combustible gas mixture may be generated, for example: h2、CO、CH4When the internal pressure of the battery reaches a certain limit, the battery can release the combustible mixed gas to the battery bin by self explosion, and the combustible mixed gas is very easy to cause fire when contacting with oxygen.
In the prior art, a lot of researches are carried out on battery explosion venting, which mainly comprises an internal explosion venting mode and an external explosion venting mode, wherein the internal explosion venting refers to that a gas absorbing material is arranged inside a battery, for example, the invention patent disclosed as CN 102934278A is that a capsule filled with the gas absorbing material is arranged inside a battery shell, and the capsule is broken to release the gas absorbing material after the internal temperature of the battery rises, so that the generated combustible mixed gas is absorbed to prevent the gas from being sprayed out, but the technology has the problems that the stability and the consistency of a gas absorbing material in a high-temperature environment inside the battery are poor, the gas absorption efficiency at high temperature can be reduced greatly, and the battery explosion venting can still exist; external explosion venting is common and discharges combustible gas mixture generated in the battery outwards, for example, in the utility model with the patent number of CN 204991875U, the inside of the battery is communicated with an external air bag through a pipeline, the combustible gas mixture is collected through the air bag, and a thimble is driven to puncture an explosion venting film at the outside to vent pressure when the air bag is enlarged; but when having the polylith battery combination to set up in the battery compartment, because the high temperature combustible gas mixture that a battery takes place the thermal runaway and oozes can influence the battery of other normal work, the battery of other normal work takes place the thermal runaway with higher speed, and this kind of mode has combustible gas mixture to leak to the environment simultaneously, causes environmental pollution.
Disclosure of Invention
Aiming at the problems that combustible mixed gas generated in the battery is firstly discharged into the battery bin and high-temperature combustible mixed gas discharged into the battery bin can influence other batteries which normally work in the prior art, the invention provides a battery with an explosion venting device and a battery module with the explosion venting device.
The invention relates to a battery with an explosion venting device and a battery module with the explosion venting device, wherein an explosion venting pipe is arranged on a battery body and is communicated with an electrolyte cavity of the battery, combustible mixed gas generated by heat collection of the battery is discharged through the explosion venting pipe, and the normal work of other batteries cannot be influenced; the specific technical scheme is as follows:
the battery with the explosion venting device comprises a cover plate and an explosion venting pipe, wherein an explosion venting port is formed in the cover plate, the explosion venting pipe is communicated with the explosion venting port, and an explosion venting film is arranged in the explosion venting port along the radial direction or is arranged in the explosion venting pipe along the radial direction.
Further limiting, a boss is arranged in the explosion venting pipe, and the explosion venting pipe is fixedly connected with the explosion venting film through the boss; or the explosion venting film is provided with a boss and is fixedly connected with the explosion venting port through the boss.
Further limiting, the cover plate is integrally connected with the explosion venting pipe;
or the bottom of the explosion venting pipe is provided with a connecting disc which protrudes outwards, and the explosion venting pipe is connected with the cover plate in a split mode through the connecting disc.
Further, the top of the explosion venting pipe is provided with a connecting disc protruding outwards.
The utility model provides a battery module with let out and explode device, includes the battery module body, the battery module body includes that the collecting pipe and a plurality of the aforesaid have to let out the battery that explodes the device and have to let out and explode the device, and the electrolyte chamber of a plurality of batteries that have to let out and explode the device all communicates with the collecting pipe through letting out the explosion pipe, the collecting pipe passes the outside that the battery module body extends to the battery module body.
Further inject, the collecting pipe includes collecting main and branch pipe that converges, and every explodes the pipe correspondence and converges branch pipe intercommunication, the branch pipe that converges passes battery module body and sets up the collecting main intercommunication in the battery module body outside.
Further defined, the confluence branch pipe is communicated with the explosion venting pipe through a butt joint.
Further, the battery module with the explosion venting device further comprises a gas treatment device communicated with the confluence main pipe.
Further inject, gas processing apparatus includes upper strata absorption chamber and lower floor's cooling chamber, upper strata absorption chamber and lower floor's cooling chamber pass through the baffle and separate, the baffle is ventilative board, the total union pipe and the lower floor cooling chamber intercommunication converge.
Further limiting, a gas adsorption piece is arranged in the upper-layer adsorption cavity, and cooling liquid is arranged in the lower-layer cooling cavity; the top of the upper layer adsorption cavity is communicated with an exhaust pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a battery with an explosion venting device, which comprises a cover plate and an explosion venting pipe, wherein an explosion venting port is arranged on the cover plate, the explosion venting pipe is communicated with the explosion venting port, and an explosion venting film is arranged in the explosion venting port along the radial direction or is arranged in the explosion venting pipe along the radial direction. When the battery is out of control due to heat, the battery is a high-temperature heat source, the generated high-temperature combustible gas is released through the explosion release pipe, and the high-temperature combustible mixed gas is not in contact with the high-temperature heat source and the air in the whole process, so that the risk of fire is greatly reduced.
2. A boss is arranged in the explosion venting pipe, and the explosion venting pipe is fixedly connected with the explosion venting film through the boss; or the explosion venting film is provided with a boss and is fixedly connected with the explosion venting port through the boss. The explosion venting port or the explosion venting pipe can be connected with the explosion venting film more firmly through the lug boss.
3. The cover plate is integrally connected with the explosion venting pipe, the explosion venting pipe can be integrally formed on the cover plate by stamping, and the operation process is simple; or the bottom of the explosion venting pipe is provided with the connecting disc which protrudes outwards, the explosion venting pipe is in split connection with the cover plate through the connecting disc, the explosion venting pipe can be welded more firmly when being welded with the top of the explosion venting port through the connecting disc, and welding operation is convenient.
4. The top of the explosion venting pipe is provided with a connecting disc which protrudes outwards, and the explosion venting pipe can be conveniently connected with other pipelines through the connecting disc at the top of the explosion venting pipe.
5. The invention relates to a battery module with an explosion venting device, which comprises a collecting pipe and a plurality of batteries, wherein electrolyte cavities of the batteries are communicated with the collecting pipe through the explosion venting pipe, and the collecting pipe penetrates through a battery module body and extends to the outer side of the battery module body. When one battery is out of control due to thermal runaway so that electrolyte reacts to generate combustible mixed gas, the combustible mixed gas is discharged to the outer side of the battery module body along the collecting pipe, the high-temperature combustible mixed gas cannot contact with other batteries, and the normal work of other batteries cannot be influenced; meanwhile, the whole process of discharging the high-temperature combustible mixed gas cannot be in contact with other high-temperature heat sources, and oxygen cannot be contacted, so that the fire risk is greatly reduced.
6. The collecting pipe comprises a collecting main pipe and a collecting branch pipe, the collecting branch pipe is communicated with the explosion venting pipe, and the collecting branch pipe penetrates through the battery module body and is communicated with the collecting main pipe. The branch pipe that converges is convenient to be derived combustible mixture from the inner chamber of battery module body, and the house steward that converges is convenient to be concentrated the collection to combustible mixture.
7. The confluence branch pipe is communicated with the explosion venting pipe through a butt joint; the bus branch pipe and the explosion venting pipe can be connected more firmly through the butt joint.
8. The battery module with the explosion venting device also comprises a gas treatment device communicated with the confluence main pipe, and the combustible mixed gas is subjected to centralized treatment through the gas treatment device, so that the combustible mixed gas is prevented from contacting with air to cause fire, and meanwhile, the combustible mixed gas is prevented from being discharged into the air to pollute the environment, and the battery module accords with the concept of green development and environmental protection of new energy batteries.
9. The gas treatment device comprises an upper-layer adsorption cavity and a lower-layer cooling cavity, the upper-layer adsorption cavity and the lower-layer cooling cavity are separated through a partition plate, the partition plate is a breathable plate, and a confluence header pipe is communicated with the lower-layer cooling cavity. The cooling liquid through lower floor's cooling intracavity is cooled down combustible gas mixture earlier, and gaseous follow cooling liquid after the cooling is appeared out and is adsorbed through upper adsorption cavity, adsorbs the adsorption efficiency that can improve combustible gas composition after the cooling again, and the gas mixture that has adsorbed combustible gas composition can the safe emission.
Drawings
Fig. 1 is a schematic structural view of a battery equipped with an explosion venting device according to the present invention;
FIG. 2 is a first structural schematic diagram of the cover plate and the explosion venting pipe integrally connected;
FIG. 3 is a second structural schematic view of the cover plate and the explosion venting pipe being integrally connected;
FIG. 4 is a first structural schematic diagram of a cover plate and a explosion venting pipe in split connection;
FIG. 5 is a second structural schematic diagram of the split connection of the cover plate and the explosion venting pipe;
FIG. 6 is a schematic diagram of a manifold;
FIG. 7 is a schematic view of the connection of the explosion venting device with the battery body;
fig. 8 is a schematic structural view of a battery module mounted with an explosion venting device;
FIG. 9 is a longitudinal sectional view of the gas processing apparatus;
the battery comprises a cover plate 1, a positive pole column 2, an explosion venting tube 3, a boss 31, an external thread 32, a connecting disc 33, a negative pole column 4, a battery body 5, a collecting tube 6, a collecting branch tube 61, a butt joint 62, a sealing piece 63, a gas treatment device 7, an adsorption layer 71, filter cotton 72, a partition plate 73, cooling liquid 74, an exhaust pipe 75, an air pipe 76, an explosion venting port 8, an explosion venting film 9 and a liquid injection hole 10.
Detailed Description
The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The invention relates to a battery with an explosion venting device, which comprises a cover plate 1 and an explosion venting pipe 3, wherein an explosion venting port 8 is formed in the cover plate 1, the explosion venting pipe 3 is communicated with the explosion venting port 8, an explosion venting film 9 is arranged in the explosion venting port 8 along the radial direction, or the explosion venting film 9 is arranged in the explosion venting pipe 3 along the radial direction. A boss is arranged in the explosion venting pipe 3, and the explosion venting pipe 3 is fixedly connected with the explosion venting film 9 through the boss; or a boss is arranged on the explosion venting film 9, and the explosion venting film 9 is fixedly connected with the explosion venting port 8 through the boss. The cover plate 1 is integrally connected with the explosion venting pipe 3; or the bottom of the explosion venting pipe 3 is provided with a connecting disc 33 protruding outwards, and the explosion venting pipe 3 is connected with the cover plate 1 in a split mode through the connecting disc 33. The top of the explosion venting pipe 3 is provided with a connecting disc 33 protruding outwards.
The invention relates to a battery module with an explosion venting device, which comprises a battery module body, wherein the battery module body comprises a collecting pipe 6 and a plurality of batteries with the explosion venting device, electrolyte cavities of the plurality of batteries with the explosion venting device are communicated with the collecting pipe 6 through an explosion venting pipe 3, and the collecting pipe 6 penetrates through the battery module body and extends to the outer side of the battery module body. The collecting pipe 6 comprises a collecting main pipe and collecting branch pipes 61, each explosion venting pipe 3 is correspondingly communicated with one collecting branch pipe 61, and the collecting branch pipes 61 penetrate through the battery module body to be communicated with the collecting main pipe arranged on the outer side of the battery module body. The branch pipe 61 communicates with the explosion venting pipe 3 through a butt joint 62. The battery module with the explosion venting device further comprises a gas treatment device 7 communicated with the confluence main. The gas treatment device 7 comprises an upper layer adsorption cavity and a lower layer cooling cavity, the upper layer adsorption cavity and the lower layer cooling cavity are separated by a partition plate 73, the partition plate 73 is a breathable plate, and a confluence header pipe is communicated with the lower layer cooling cavity. A gas adsorption piece is arranged in the upper-layer adsorption cavity, and cooling liquid 74 is arranged in the lower-layer cooling cavity; the top of the upper layer adsorption cavity is communicated with an exhaust pipe 76.
Example 1
Referring to fig. 1-2, the battery with the explosion venting device of the present embodiment includes an explosion venting pipe 3, a battery body 5, and a cover plate 1 disposed above the battery body 5, wherein the cover plate 1 is provided with an explosion venting port 8, the explosion venting pipe 3 is integrally formed on the cover plate 1 at a position corresponding to the top of the explosion venting port 8 by stamping, the bottom of the explosion venting port 8 is radially provided with an explosion venting film 9, the explosion venting film 9 and the explosion venting pipe 3 are disposed vertically and oppositely along the cover plate 1, and the explosion venting pipe 3 is communicated with an electrolyte chamber of the battery body 5 through the explosion venting film 9; a liquid injection hole 10 is formed in the cover plate 1, and the liquid injection hole 10 and the explosion venting port 8 are arranged in parallel; on the cover plate 1, the two sides of the explosion venting pipe 3 are respectively a positive pole post 2 and a negative pole post 4 of the battery body 5.
Preferably, an external thread 32 is arranged on the outer side of the top of the explosion venting pipe 3, and the explosion venting pipe 3 can be conveniently detachably connected with other pipelines through the external thread 32.
Referring to fig. 3, it is preferable that a connecting disc 33 is provided at the outer side of the top of the explosion venting pipe 3, and the explosion venting pipe 3 can be conveniently welded with other pipelines through the connecting disc 33.
Preferably, the explosion venting film 9 is of a disc-shaped structure, a boss is arranged at the edge of the explosion venting film 9, and the explosion venting film 9 is welded and fixed through the side wall of the boss explosion venting port 8.
Example 2
Referring to fig. 1 and 4, the battery with the explosion venting device of the embodiment includes an explosion venting pipe 3, a battery body 5 and a cover plate 1 disposed above the battery body 5, the cover plate 1 is provided with an explosion venting port 8, the bottom of the explosion venting pipe 3 is provided with a connection disc 33 protruding outwards, the explosion venting pipe 3 is connected with the cover plate 1 in a split manner through the connection disc 33, a boss 31 is disposed in the explosion venting port 8, an explosion venting film 9 is welded with the cover plate 1 through the boss 31, the explosion venting film 9 is disposed along the radial direction of the explosion venting port 8, and the explosion venting pipe 3 is communicated with an electrolyte cavity of the battery body 5 through the explosion venting film 9; a liquid injection hole 10 is formed in the cover plate 1, and the liquid injection hole 10 and the explosion venting port 8 are arranged in parallel; on the cover plate 1, the two sides of the explosion venting pipe 3 are respectively a positive pole post 2 and a negative pole post 4 of the battery body 5.
Preferably, the explosion venting pipe 3 is welded with the cover plate 1 through the connecting disc 33, and the explosion venting pipe 3 is arranged above the corresponding position of the explosion venting port 8.
Or preferably, referring to fig. 5, in the present embodiment, a boss 31 is disposed in the lumen of the explosion venting pipe 3, the explosion venting film 9 is fixedly connected to the explosion venting pipe 3 through the boss 31, and the explosion venting film 9 is disposed at the top, the middle or the bottom of the explosion venting pipe 3.
Further preferably, the explosion venting film 9 is arranged at the top of the explosion venting pipe 3, and the explosion venting film 9 is welded with the boss 31.
Besides welding, the explosion venting membrane 9 and the boss 31 can also be glued or fixedly connected in other manners.
Example 3
Referring to fig. 7, the battery module with the explosion venting device of the present embodiment includes a battery module body, the battery module body includes 5 sets of the batteries with the explosion venting device of embodiment 1 or embodiment 2, the 5 sets of the batteries with the explosion venting device are arranged in parallel, the number of the confluence branch pipes 61 is the same as that of the explosion venting pipes 3, a confluence pipe 6 is arranged on a cover plate 1 of the battery body 5 on each battery with the explosion venting device, one end of the confluence pipe 6 is communicated with an electrolyte chamber of the battery body 5 through the explosion venting pipe 3, and the other end of the confluence pipe 6 passes through the battery module body and extends to the outside of the battery module body.
Example 4
Referring to fig. 6, in the battery module with the explosion venting device of the present embodiment, on the basis of embodiment 3, the collecting pipe 6 includes a collecting main pipe and collecting branch pipes 61, the explosion venting pipe 3 on each battery with the explosion venting device is correspondingly communicated with one collecting branch pipe 61, and the collecting branch pipe 61 passes through the battery module body and is communicated with the collecting main pipe arranged outside the battery module body. The explosion venting pipe 3 can meet the requirement of facilitating the arrangement of the confluence branch pipe 61 when a plurality of groups of battery bodies 5 are arranged in the battery module body; the combustible mixture can be conveniently collected in a unified manner through the confluence main pipe.
Preferably, the external thread 32 or the connecting disc 33 is arranged at the top of the explosion venting pipe 3, and the explosion venting pipe 3 can be in threaded connection with the collecting branch pipe 61 through the external thread 32; or the explosion venting pipe 3 can be welded with the bus branch pipe 61 through the connecting disc 33.
Example 5
In the battery module with the explosion venting device of the present embodiment, on the basis of embodiment 4, the collecting branch pipe 61 is communicated with the explosion venting pipe 3 through the butt joint 62; specifically, the butt joint 62 is connected to the branch pipe 61, an internal thread is provided at the bottom end of the butt joint 62, and the butt joint 62 is screwed to the explosion venting pipe 3.
Preferably, the connection mode of the butt joint 62 and the explosion venting pipe 3 of the present embodiment may be other detachable or non-detachable connection modes.
In a pre-selected mode, the sealing ring is arranged at the joint of the butt joint 62 and the explosion venting pipe 3.
Example 6
Referring to fig. 8, the battery module with explosion venting device of the present embodiment further includes a gas processing device on the basis of embodiment 5, and one end of the collecting main is communicated with the gas processing device 7; the other end of the manifold is sealed by seal 63. The combustible gas mixture can be collected and treated uniformly by the gas treatment device 7.
Preferably, the sealing member 63 may be a blanking cap or a sealing plate, which is welded to the manifold.
Preferably, the gas processing device 7 may be connected to both ends of the confluence main of the present embodiment.
Example 7
Referring to fig. 9, this embodiment is a battery module with let out and explode device, and on the basis of embodiment 6, gas processing apparatus 7 is the box structure, is provided with upper adsorption chamber and lower floor cooling chamber on gas processing apparatus 7, is provided with baffle 73 between upper adsorption chamber and the lower floor cooling chamber, separates upper adsorption chamber and lower floor cooling chamber through baffle 73, and baffle 73 is ventilative board, is provided with gaseous absorption piece in the upper adsorption chamber, is provided with coolant liquid 74 in the lower floor cooling chamber, and the manifold communicates with lower floor cooling chamber and extends to below the liquid level of coolant liquid 74.
Preferably, the cooling liquid 74 of the present embodiment may be cooling water or cooling oil.
Preferably, the vent pipe 76 is arranged on the cavity wall of the lower-layer cooling cavity, the confluence main pipe is communicated with the vent pipe 76, and the vent pipe 76 extends to a position 20 cm below the liquid level of the cooling liquid 74; the combustible gas mixture can be cooled rapidly, and the cooled combustible gas mixture has a better adsorption effect.
Preferably, the partition 73 is a porous plate made of stainless steel or plastic.
Preferably, a waterproof and breathable film is provided above the partition plate 73 in this embodiment.
Example 8
The embodiment provides a battery module with let out and explode device, and on embodiment 7's basis, its gaseous adsorption component includes filter pulp 72 and adsorbed layer 71, and filter pulp 72 and adsorbed layer 71 set gradually in the top of waterproof ventilated membrane from bottom to top.
Preferably, the material of the adsorption layer 71 may be one or more of activated carbon, molecular sieve, adsorption resin, and graphite, and adsorbs the cooled combustible mixture gas.
Preferably, the gas processing device 7 further comprises an exhaust pipe 75, and the exhaust pipe 75 is arranged at the top of the upper layer adsorption cavity and is communicated with the upper layer adsorption cavity; the mixed gas having adsorbed the combustible gas is discharged through the exhaust pipe 75.
The battery module with let out and explode device of this embodiment, its use is: when a certain or several battery bodies 5 in the box structure take place thermal runaway and cause electrolyte to react and produce combustible gas mixture, combustible gas mixture can be through explosion venting pipe 3, branch pipe 61 converges, collecting main pipe and breather pipe 76 concentrate and collect in the lower floor cooling intracavity of gas processing apparatus 7, cool down through the coolant liquid in the lower floor cooling intracavity, combustible gas mixture after the cooling is appeared from the coolant liquid, pass baffle 73 and waterproof ventilated membrane and filter the particle molecule on filter pulp 72, get into the combustible gas composition in the combustible gas mixture of adsorbed by adsorbed layer 71, the gas mixture that has adsorbed combustible gas is discharged from blast pipe 75.
The number of the battery bodies 5 can be specifically set according to the battery capacity requirement of the working substance, and can be 2, 3, 4, 5, 6, 7, 8, 9 or even more, and the arrangement mode of the plurality of battery bodies 5 is the conventional arrangement mode; the distance from the protrusion 31 to the outlet of the explosion vent 3 can be 1 mm, 2 mm, 3 mm, 4 mm and 5 mm, as long as the distance is not greater than 5 mm; the vent pipe 76 can extend to a position which is not less than 20 cm below the liquid level of the cooling liquid 74, and can be 20 cm, 25 cm, 30 cm and the like.
The invention has been described in further detail with reference to specific preferred embodiments thereof, and it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The battery with the explosion venting device is characterized by comprising a cover plate and an explosion venting pipe, wherein an explosion venting port is formed in the cover plate, the explosion venting pipe is communicated with the explosion venting port, and an explosion venting film is arranged in the explosion venting port along the radial direction or is arranged in the explosion venting pipe along the radial direction.
2. The battery with the explosion venting device as claimed in claim 1, wherein a boss is arranged in the explosion venting pipe, and the explosion venting pipe is fixedly connected with the explosion venting film through the boss;
or the explosion venting film is provided with a boss and is fixedly connected with the explosion venting port through the boss.
3. The battery with the explosion venting device of claim 2, wherein the cover plate is integrally connected with the explosion venting pipe;
or the bottom of the explosion venting pipe is provided with a connecting disc which protrudes outwards, and the explosion venting pipe is connected with the cover plate in a split mode through the connecting disc.
4. A battery with an explosion venting device according to claim 3, wherein the top of the explosion venting pipe is provided with a connecting disc protruding outwards.
5. A battery module with an explosion venting device, which is characterized by comprising a battery module body, wherein the battery module body comprises a collecting pipe and a plurality of batteries with the explosion venting device as claimed in any one of claims 1 to 4, electrolyte cavities of the plurality of batteries with the explosion venting device are communicated with the collecting pipe through the explosion venting pipe, and the collecting pipe penetrates through the battery module body and extends to the outer side of the battery module body.
6. The battery module with the explosion venting device as recited in claim 5, wherein the bus tubes comprise a bus main tube and bus branch tubes, each explosion venting tube is correspondingly communicated with one bus branch tube, and the bus branch tubes pass through the battery module body to be communicated with the bus main tube arranged outside the battery module body.
7. The battery module with the explosion venting device of claim 6, wherein the bus branch pipe is communicated with the explosion venting pipe through a butt joint.
8. The battery module with the explosion venting device of claim 7, wherein the battery module with the explosion venting device further comprises a gas treatment device in communication with the manifold.
9. The battery module with the explosion venting device of claim 8, wherein the gas treatment device comprises an upper adsorption cavity and a lower cooling cavity, the upper adsorption cavity and the lower cooling cavity are separated by a partition plate, the partition plate is a gas permeable plate, and the header pipe is communicated with the lower cooling cavity.
10. The battery module with the explosion venting device as claimed in claim 9, wherein a gas adsorption member is disposed in the upper-layer adsorption cavity, and a cooling liquid is disposed in the lower-layer cooling cavity; the upper layer adsorption cavity is communicated with an exhaust pipe.
CN202110961206.0A 2021-08-20 2021-08-20 Battery with let out and explode device and have battery module who lets out and explode device Pending CN113725552A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110961206.0A CN113725552A (en) 2021-08-20 2021-08-20 Battery with let out and explode device and have battery module who lets out and explode device
PCT/CN2022/113263 WO2023020571A1 (en) 2021-08-20 2022-08-18 Battery having explosion venting device, battery module, and battery box having explosion venting channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110961206.0A CN113725552A (en) 2021-08-20 2021-08-20 Battery with let out and explode device and have battery module who lets out and explode device

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Publication Number Publication Date
CN113725552A true CN113725552A (en) 2021-11-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114614142A (en) * 2022-03-03 2022-06-10 北京海博思创科技股份有限公司 Battery module and battery system
WO2023020571A1 (en) * 2021-08-20 2023-02-23 陕西奥林波斯电力能源有限责任公司 Battery having explosion venting device, battery module, and battery box having explosion venting channel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023020571A1 (en) * 2021-08-20 2023-02-23 陕西奥林波斯电力能源有限责任公司 Battery having explosion venting device, battery module, and battery box having explosion venting channel
CN114614142A (en) * 2022-03-03 2022-06-10 北京海博思创科技股份有限公司 Battery module and battery system

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