WO2023020571A1 - Battery having explosion venting device, battery module, and battery box having explosion venting channel - Google Patents
Battery having explosion venting device, battery module, and battery box having explosion venting channel Download PDFInfo
- Publication number
- WO2023020571A1 WO2023020571A1 PCT/CN2022/113263 CN2022113263W WO2023020571A1 WO 2023020571 A1 WO2023020571 A1 WO 2023020571A1 CN 2022113263 W CN2022113263 W CN 2022113263W WO 2023020571 A1 WO2023020571 A1 WO 2023020571A1
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- WIPO (PCT)
- Prior art keywords
- battery
- explosion
- venting
- explosion venting
- pipe
- Prior art date
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- 238000013022 venting Methods 0.000 title claims abstract description 220
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Images
Classifications
-
- 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
-
- 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
-
- 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
- H01M50/383—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
- H01M50/392—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
Definitions
- the application belongs to the technical field of batteries, and in particular relates to a battery with an explosion venting device, a battery module and a battery box with an explosion venting channel.
- New energy batteries are power sources that provide power sources, and mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, etc.
- overheating, overcharging, and overdischarging of the battery will cause heat accumulation inside the battery, and a large amount of heat accumulation will cause the internal temperature of the battery to rise.
- thermal runaway will occur.
- a large amount of flammable mixed gas will be generated, such as: H 2 , CO, CH 4 , etc.
- These flammable mixed gases will accumulate inside the battery to increase the internal pressure of the battery.
- the internal pressure of the battery reaches a certain limit, the battery will vent itself to release the flammable mixed gas. The gas is released into the battery compartment, and the contact of the flammable mixed gas with oxygen can easily cause a fire.
- Internal explosion venting refers to the installation of gas absorbing materials inside the battery.
- the patent application with the announcement number CN 102934278A is A capsule equipped with a gas-absorbing material is installed inside the battery case. When the internal temperature of the battery rises, the capsule bursts and releases the gas-absorbing material, which absorbs the generated combustible gas mixture and prevents the gas from blowing out.
- the explosion-venting membrane releases the pressure; but when there are multiple batteries in the battery compartment, the high-temperature flammable mixture leaking from one battery will affect other normal working batteries and accelerate the heat generation of other normal working batteries. Out of control, and at the same time, in this way, the flammable mixture leaks to the environment, causing environmental pollution.
- the main consideration is the design of the heat dissipation structure, such as setting exhaust fans, water cooling cycle of the box, setting heat dissipation fins in the box, adding semiconductor cooling fins, etc., while the battery box itself Explosion and pressure relief are less considered.
- the patent No. CN2020219815768 discloses a battery box with an explosion relief function. By setting a pressure relief hole, a spring and a pressure relief plate in the box, when the battery explodes, the pressure generated by the explosion inside the battery box passes through the pressure relief hole. It is discharged into the pressure relief plate, and after being buffered by the spring, the explosion pressure is gradually reduced.
- the patent number is CN2019205621548, which discloses a new energy battery box with explosion-venting function.
- an explosion-venting device including an explosion-venting plate and an explosion-venting bolt, and hinged the explosion-venting plate and the box, on the one hand, it can play an explosion-venting role.
- the explosion venting plate when the explosion venting plate is vented, it will not break away from the box and fly to other equipment.
- the crossbeam and the explosion-venting bolt are set to be threaded, just unscrew the screw, replace with a new metal gasket, then pass the screw through the through hole of the explosion-venting plate, tighten the screw and the crossbeam, and it can be reused.
- This technology only solves the safety of the battery box and the repeated use of the explosion-venting device in the process of explosion-venting from a structural point of view, and the prevention of secondary hazards caused by the diffusion of combustible gas is a further consideration.
- the combustible mixed gas generated inside the battery is first discharged into the battery compartment, and the high-temperature combustible mixed gas discharged into the battery compartment will affect other normally working batteries.
- This application proposes a For batteries with explosion-venting devices, battery modules and battery boxes with explosion-venting channels, this application installs an explosion-venting tube on the battery body, which communicates with the electrolyte chamber of the battery, and collects heat from the battery through the explosion-venting tube.
- the generated combustible mixture is discharged without affecting the normal operation of other batteries.
- the specific technical scheme is as follows:
- a battery with an explosion venting device comprising a cover plate and an explosion venting tube, the cover plate is provided with an explosion venting port, the explosion venting tube communicates with the explosion venting port, and the explosion venting port is radially provided with An explosion venting membrane, or an explosion venting membrane is arranged radially in the explosion venting pipe.
- a boss is arranged inside the explosion venting tube, and the explosion venting tube is fixedly connected to the explosion venting membrane through the boss; or a boss is arranged on the explosion venting membrane, and the explosion venting membrane is connected to the explosion venting membrane through the boss Explosion port fixed connection.
- cover plate is integrally connected with the explosion venting pipe; or the bottom of the explosion venting pipe is provided with an outwardly protruding connection plate, and the explosion venting pipe is connected to the cover plate in a split form through the connection plate.
- the top of the detonation pipe is provided with an outwardly protruding connecting plate.
- the present application also provides a battery module with an explosion venting device, which includes a battery module body, the battery module body includes a manifold and a plurality of the above-mentioned batteries with an explosion venting device, and a plurality of batteries with an explosion venting device.
- the electrolyte chambers of the batteries of the explosion device communicate with the confluence pipe through the explosion vent pipe, and the confluence pipe passes through the battery module body and extends to the outside of the battery module body.
- the confluence pipe includes a confluence main pipe and a confluence branch pipe, and each detonation pipe communicates with a confluence branch pipe, and the confluence branch pipe passes through the battery module body and communicates with the confluence main pipe arranged outside the battery module body.
- the converging branch pipe communicates with the explosion relief pipe through a butt joint.
- the battery module with an explosion relief device further includes a gas treatment device communicated with the manifold.
- the gas processing device includes an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition, the partition is a gas-permeable plate, and the confluence main pipe communicates with the lower cooling chamber.
- the upper adsorption chamber is provided with a gas adsorbent, and the lower cooling chamber is provided with cooling liquid; the top of the upper adsorption chamber is connected to an exhaust pipe.
- this application also proposes a battery box with an explosion venting channel, and its specific technical solution is as follows:
- a battery box with an explosion venting channel comprising a battery cavity, an adsorption cavity and a gas collection pipeline, the battery cavity is provided with a battery module, the battery module communicates with the adsorption cavity through the gas collection pipeline, the battery module
- the pack comprises a plurality of the above-mentioned batteries with explosion venting.
- a plurality of batteries with explosion venting devices are arranged side by side, and the gas collection pipeline communicates with the explosion venting ports on the batteries.
- the gas collection pipeline includes a branch pipe and a standpipe, each battery corresponds to a branch pipe, the standpipe communicates with the explosion vent on the battery through the branch pipe, and the standpipe communicates with the adsorption chamber.
- the battery cavity includes an inner cavity and an outer cavity arranged outside the inner cavity, the battery module is placed in the inner cavity, and the outer cavity is filled with a heat-conducting material, and the heat-conducting material may be heat-conducting oil , rosin, thermally conductive silica gel and graphite, or a combination of two or more.
- a heat dissipation fin is provided in the battery cavity, one end of the heat dissipation fin is placed in the inner cavity, and the other end of the heat dissipation fin is placed in the outer cavity.
- the battery box with an explosion venting channel further includes an electrical cavity arranged between the battery cavity and the adsorption cavity, and the standpipe passes through the electrical cavity and communicates with the adsorption cavity.
- the adsorption cavity is provided with a solid adsorption material
- the solid adsorption material is one or a combination of two or more of activated carbon, graphite, adsorption resin, silicon dioxide, porous glass, magnesium oxide, etc. .
- a lower partition is provided between the battery chamber and the electrical chamber
- an upper partition is provided between the electrical chamber and the adsorption chamber
- via holes are provided on the lower partition and the upper partition, so
- the standpipe passes through the via hole on the lower partition and the via hole on the upper partition to communicate with the adsorption chamber in turn, the connection between the via hole of the lower partition and the standpipe, and the connection between the via hole of the upper partition and the standpipe.
- the joints are provided with sealing gaskets.
- the bottom of the lower partition is provided with a ring extending downwards, the top opening of the inner cavity is opened, and the annular boss is clamped at the top opening of the inner cavity and seals the inner cavity; and the lower partition The edge of the plate extends to the wall of the outer cavity and seals the outer cavity.
- a ventilation tube is provided in the adsorption cavity, the ventilation tube runs through the adsorption cavity, and a ventilation mesh is arranged on the ventilation tube, and the standpipe extends into the lumen of the ventilation tube and passes through the ventilation mesh and The adsorption chamber is connected.
- the top opening of the adsorption chamber is open, and an upper cover of the adsorption chamber is provided at the top opening of the adsorption chamber, and an exhaust pipe communicating with the adsorption chamber is arranged on the upper cover of the adsorption chamber.
- ventilation holes are provided on the cavity wall of the electrical cavity.
- a battery holder is arranged in the inner cavity, and a plurality of battery storage bins are arranged side by side on the battery holder, and one battery is correspondingly placed in each battery storage bin.
- multiple battery boxes with explosion venting passages there are multiple battery boxes with explosion venting passages, and multiple battery boxes with explosion venting passages are arranged side by side, and the adsorption chambers on the battery boxes with explosion venting passages are connected to the collection chamber through the exhaust pipe.
- the tube is connected.
- the collection pipe communicates with the gas collection device.
- the battery with explosion-venting device includes a cover plate and an explosion-venting tube.
- An explosion-venting port is arranged on the cover plate.
- the explosion-venting membrane, or the explosion-venting tube is provided with an explosion-venting membrane along the radial direction.
- a boss is provided in the explosion venting tube, and the explosion venting tube is fixedly connected to the explosion venting membrane through the boss; or the explosion venting membrane is provided with a boss, and the explosion venting membrane is fixed to the explosion venting port through the boss connect.
- the explosion vent or the explosion vent pipe can be connected more firmly with the explosion vent membrane through the boss.
- the cover plate and the explosion vent tube are integrally connected, and the explosion vent tube can be formed by integral stamping on the cover plate, and the operation process is simple;
- the explosion tube is connected to the cover plate through the connection plate in a split type, and the connection plate enables the explosion vent tube to be welded more firmly when it is welded to the top of the explosion vent port, and the welding operation is convenient.
- an outwardly protruding connection plate is provided on the top of the explosion vent tube, through which the explosion vent tube can be conveniently connected to other pipelines.
- the battery module with explosion venting device provided by this application includes a manifold and multiple batteries with explosion venting devices.
- the electrolyte chambers of multiple batteries are connected to the manifold through the explosion venting tube, and the manifold passes through
- the battery module body extends to the outside of the battery module body.
- the flammable mixed gas When the thermal runaway of a certain battery causes the electrolyte to react to generate flammable mixed gas, the flammable mixed gas will be discharged to the outside of the battery module body along the manifold, and the high-temperature flammable mixed gas will not contact other batteries and will not affect other batteries At the same time, the high-temperature combustible mixed gas will not come into contact with other high-temperature heat sources or oxygen during the whole discharge process, which greatly reduces the risk of fire.
- the confluence pipe includes a confluence main pipe and a confluence branch pipe, the confluence branch pipe communicates with the explosion vent pipe, and the confluence branch pipe passes through the battery module body and communicates with the confluence main pipe.
- the confluence branch pipe facilitates the export of the combustible mixture from the cavity of the battery module body, and the confluence main pipe facilitates the centralized collection of the combustible mixture.
- the confluence branch pipe communicates with the explosion vent pipe through the butt joint; the connection between the confluence branch pipe and the explosion vent pipe can be made more firm through the butt joint.
- the battery module with explosion venting device of this application also includes a gas treatment device connected to the confluence main pipe, through which the combustible mixture is processed centrally to avoid fire caused by the contact of the combustible mixture with air, and at the same time avoid The discharge of combustible mixed gas into the air pollutes the environment, which is in line with the concept of green development and environmental protection of new energy batteries.
- the gas treatment device includes an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition, the partition is a breathable plate, and the confluence main pipe communicates with the lower cooling chamber.
- the cooling liquid in the lower cooling chamber first cools the combustible gas mixture. After cooling, the gas precipitates from the cooling liquid and is adsorbed by the upper adsorption chamber. After cooling, the adsorption can improve the adsorption efficiency of combustible gas components, and the mixture of combustible gas components is absorbed. The gas can be safely vented.
- the battery box with an explosion vent channel connects the battery module in the battery cavity with the adsorption cavity through the gas collection pipeline, and can discharge the combustible mixed gas generated by the thermal runaway of the battery due to internal heat collection out of the battery cavity in time , the flammable mixed gas will not form a suppressed pressure in the battery cavity, preventing damage to the structure of the battery box; at the same time, it can also effectively isolate the flammable mixed gas generated by the thermal runaway of the battery from the combustible material (air), preventing the flammable mixed gas from Secondary deflagration occurs when the combustible material (air) is mixed, causing danger; the combustible mixed gas enters the adsorption chamber through the gas collection pipeline and is adsorbed by the solid adsorption material in the adsorption chamber to remove the combustible components and can be discharged safely.
- the gas collection pipeline is connected to the explosion vent on the battery; when a battery cell in the battery module is thermally out of control and the electrolyte decomposes to generate flammable mixed gas, the high-temperature flammable mixed gas is collected along the gas
- the pipeline is discharged to the adsorption chamber of the battery box, and the whole process does not contact with other battery cells in the battery module, and will not affect the normal operation of other battery cells; at the same time, the high-temperature combustible gas mixture will not contact with other cells during the whole discharge process. High-temperature heat source contact, and no contact with oxygen, greatly reducing the risk of fire.
- the battery cavity includes an inner cavity and an outer cavity arranged outside the inner cavity.
- the battery module is placed in the inner cavity, and the outer cavity is filled with heat-conducting materials; the heat-conducting material can keep the battery module working.
- the generated heat is transferred to the outside of the outer cavity to dissipate and protect the battery module.
- a cooling fin is installed in the battery cavity, one end of the cooling fin is placed in the inner cavity, and the other end of the cooling fin is placed in the outer cavity.
- the temperature of the inner cavity can be quickly transferred to the outer cavity through the cooling fins, which increases the heat transfer area and improves the heat dissipation efficiency.
- the battery box with explosion-venting channels in this application also includes an electrical cavity arranged between the battery cavity and the adsorption cavity, in which it is convenient to arrange the connecting circuit wires or control circuit components of the battery; on the cavity wall of the electrical cavity Ventilation holes are provided, through which heat generated by circuit wires or control circuit components in the electrical cavity can be dissipated.
- a solid adsorption material is provided in the adsorption chamber, through which the combustible gas components in the combustible gas mixture can be adsorbed, and the combustible gas can be discharged after the combustible gas is absorbed, which can reduce the occurrence of secondary gas in the combustible gas mixture. risk of secondary combustion.
- annular boss is provided at the bottom of the lower partition, and the annular boss is clamped at the top opening of the inner cavity and seals the inner cavity; the ring boss facilitates the connection between the lower partition and the inner cavity.
- the tight fitting connection facilitates the sealing of the inner cavity; at the same time, the edge of the lower partition extends to the cavity wall of the outer cavity and seals the outer cavity, which facilitates the sealing of the outer cavity.
- a ventilation tube is provided in the adsorption cavity, the ventilation tube runs through the adsorption cavity, and the ventilation tube is provided with a ventilation mesh, and the standpipe extends into the lumen of the ventilation tube and passes through the ventilation mesh and the adsorption cavity. connected.
- the combustible mixed gas is uniformly dispersed in the solid adsorption material through the air-permeable mesh, so that the combustible gas components in the combustible mixed gas are more fully adsorbed by the solid adsorbent.
- the upper cover of the adsorption chamber is provided with an exhaust pipe that communicates with the adsorption chamber, through which the gas that has absorbed combustible components can be easily discharged or further collected.
- multiple battery compartments are arranged side by side on the battery bracket, and a battery is placed in each battery compartment; the position of each battery cell can be fixed by the battery bracket.
- the collecting pipe is connected with the gas collection device, and the gas that has absorbed combustible gas components is collected in a centralized manner to prevent environmental pollution.
- Fig. 1 is the structural representation of the battery with explosion-venting device in embodiment 1 of the present application;
- Fig. 2 is a structural schematic diagram of the integrated connection between the cover plate and the explosion vent pipe in Embodiment 1 of the present application;
- Fig. 3 is a structural schematic diagram of a connecting plate provided on the outside of the top of the detonation pipe in Example 1 of the present application;
- Fig. 4 is a structural schematic diagram 1 of the split connection between the cover plate and the detonation pipe in Example 2 of the present application;
- Fig. 5 is the structural schematic diagram II of the split connection between the cover plate and the detonation pipe in Embodiment 2 of the present application;
- FIG. 6 is a schematic structural view of the manifold in Embodiment 4 of the present application.
- FIG. 7 is a schematic diagram of the connection between the explosion venting device and the battery body in Embodiment 3 of the present application.
- FIG. 8 is a schematic structural view of a battery module equipped with an explosion venting device in Embodiment 6 of the present application.
- Fig. 9 is a longitudinal sectional view of the gas treatment device in Example 7 of the present application.
- Fig. 10 is a schematic structural view of a battery box with an explosion-venting passage in Embodiment 9 of the present application;
- Fig. 11 is an exploded exploded view of a battery box with an explosion venting channel in Embodiment 9 of the present application;
- Figure 12 is a longitudinal sectional view of a battery box with an explosion venting passage in Example 9 of the present application.
- Figure 13 is a schematic structural view of the upper cover of the adsorption chamber in Example 9 of the present application.
- FIG. 14 is a schematic structural view of the battery cavity in Example 9 of the present application.
- Figure 15 is a schematic structural view of the battery holder in Example 9 of the present application.
- Figure 16 is a schematic structural view of the gas collection pipeline in Example 9 of the present application.
- FIG. 17 is a schematic structural diagram of the battery module in Embodiment 9 of the present application.
- Figure 18 is a schematic structural view of the upper partition in Example 9 of the present application.
- FIG. 19 is a schematic structural view of the lower partition in Embodiment 9 of the present application.
- the battery with the explosion venting device provided by the application includes a cover plate 11 and an explosion venting tube 13, the cover plate 11 is provided with an explosion venting port 18, the explosion venting tube 13 communicates with the explosion venting port 18, and the inner diameter of the explosion venting port 18 is An explosion-venting membrane 19 is arranged in the direction, or an explosion-venting membrane 19 is arranged radially in the explosion-venting pipe 13 .
- the cover plate 11 is integrally connected with the explosion venting pipe 13 , or the bottom of the explosion venting pipe 13 is provided with an outwardly protruding connection plate 133 , and the explosion venting pipe 13 is connected separately with the cover plate 11 through the connecting plate 133 .
- the top of the detonation pipe 13 may also be provided with a connecting plate 133 protruding outward.
- the battery module with explosion venting device includes a battery module body, the battery module body includes a manifold 16 and a plurality of the above-mentioned batteries with explosion venting devices, and the electrolysis of a plurality of batteries with explosion venting devices
- the liquid chambers communicate with the confluence pipe 16 through the explosion venting pipe 13, and the confluence pipe 16 extends through the battery module body to the outside of the battery module body.
- the confluence pipe 16 includes a confluence main pipe and a confluence branch pipe 161. Each detonation pipe 13 communicates with a confluence branch pipe 161.
- the confluence branch pipe 161 passes through the battery module body and communicates with the confluence pipe arranged outside the battery module body.
- the confluence branch pipe 161 communicates with the detonation pipe 13 through a butt joint 162 .
- the battery module with explosion relief device also includes a gas treatment device 17 communicated with the manifold.
- the gas treatment device 17 includes an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition 173, the partition 173 is a breathable plate, and the confluence main pipe communicates with the lower cooling chamber.
- a gas adsorption piece is arranged in the upper adsorption chamber, and a cooling liquid 174 is arranged in the lower cooling chamber; an exhaust pipe 76 is connected to the top of the upper adsorption chamber.
- the battery with explosion venting device includes an explosion venting tube 13, a battery body 15, and a cover plate 11 arranged above the battery body 15, and a venting device is arranged on the cover plate 11.
- Explosion opening 18, on the cover plate 11 and the position corresponding to the top of explosion venting opening 18, an explosion venting pipe 13 is integrally stamped and formed, and an explosion venting membrane 19 is arranged radially at the bottom of the explosion venting opening 18, and the explosion venting membrane 19 and Explosion venting pipe 13 is arranged up and down oppositely along cover plate 11, and explosion venting pipe 13 communicates with the electrolyte chamber of battery body 15 through explosion venting film 19;
- Explosion vents 18 are arranged side by side; on the cover plate 11, on both sides of the explosion vent tube 13 are the positive pole 12 and the negative pole 14 of the battery body 15, respectively.
- an external thread 132 is provided on the outside of the top of the detonation pipe 13 , and the detachable connection between the detonation pipe 13 and
- a connection plate 133 is provided on the top outside of the detonation pipe 13 , and the connection plate 133 can facilitate the welding of the detonation pipe 13 and other pipes.
- the explosion-venting membrane 19 has a disc-shaped structure, and a boss is arranged on the edge of the explosion-venting membrane 19 , and the explosion-venting membrane 19 is welded and fixed by the side wall of the explosion-venting opening 18 of the boss.
- the battery with explosion venting device includes an explosion venting tube 13, a battery body 15, and a cover plate 11 arranged above the battery body 15, and a venting device is arranged on the cover plate 11.
- the explosion vent 18 is provided with an outwardly protruding connection plate 133 at the bottom of the explosion vent 13, and the explosion vent 13 is connected to the cover plate 11 in a split form through the connection plate 133, and a boss 131 is arranged in the explosion vent 18 , the explosion venting film 19 is welded with the cover plate 11 through the boss 131, and the explosion venting film 19 is arranged radially along the explosion venting port 18, and the explosion venting tube 13 communicates with the electrolyte chamber of the battery body 15 through the explosion venting film 19;
- the cover plate 11 is provided with a liquid injection hole 110, and the liquid injection hole 110 is arranged side by side with the explosion vent 18; on the cover plate 11, the positive pole 12 and the negative pole 14 of the battery body 15 are located on both sides of the explosion vent 13.
- a boss 131 is provided in the lumen of the explosion venting tube 13, and the explosion venting membrane 19 is fixedly connected with the explosion venting tube 13 through the boss 131, and the explosion venting membrane 19 is arranged on the explosion venting tube 13. top, middle or bottom. Further preferably, the explosion-venting membrane 19 is arranged on the top of the explosion-venting pipe 13 , and the explosion-venting membrane 19 is welded to the boss 131 . In addition to welding, the explosion-venting membrane 19 and the boss 131 can also be glued together, or other fixed connection methods that can be realized.
- the battery module with an explosion venting device provided in this embodiment includes a battery module body, and the battery module body includes five groups of batteries with an explosion venting device in Embodiment 1 or Embodiment 2 , 5 groups of batteries with explosion venting devices are arranged side by side, the number of confluence branch pipes 161 is the same as the number of explosion venting pipes 13, and the cover plate 11 of the battery body 15 on each battery with explosion venting devices is provided with a confluence pipe 16.
- One end of the manifold 16 communicates with the electrolyte cavity of the battery body 15 through the explosion vent 13, and the other end of the manifold 16 extends through the battery module body to the outside of the battery module body.
- the battery module with explosion venting device provided in this embodiment is on the basis of Embodiment 3, the confluence pipe 16 includes a confluence main pipe and a confluence branch pipe 161, each battery with an explosion venting device
- the detonation pipe 13 communicates with a confluence branch pipe 161 correspondingly, and the confluence branch pipe 161 passes through the battery module body and communicates with a confluence main pipe arranged outside the battery module body.
- the explosion venting tube 13 can meet the convenience of arrangement of the confluence branch pipe 161 when there are multiple battery bodies 15 in the battery module body; the confluence main pipe can facilitate the unified collection of combustible gas mixture.
- an external thread or connecting plate 133 is provided on the top of the detonation pipe 13, and the detonation pipe 13 can be threadedly connected with the confluence branch pipe 161 through the external thread; or the detonation pipe 13 can be welded with the confluence branch pipe 161 through the connection plate 133.
- the confluence branch pipe 161 communicates with the explosion relief pipe 13 through a butt joint 162; specifically, the butt joint 162 is connected to the confluence branch pipe 161,
- the bottom end of the joint 162 is provided with an internal thread, and the butt joint 162 is threadedly connected with the detonation pipe 13 .
- the connection mode between the butt joint 162 and the detonation pipe 13 in this embodiment may be other detachable or non-detachable connection modes.
- a sealing ring is provided at the joint between the butt joint 162 and the detonation pipe 13 .
- the battery module with explosion venting device provided in this embodiment also includes a gas processing device, one end of the confluence main pipe communicates with the gas processing device 17; the other end of the confluence main pipe An end seal 163 seals.
- the combustible gas mixture can be centrally collected and treated uniformly by the gas processing device 17 .
- the sealing member 163 may be a blocking cap or a sealing sheet, and the blocking cap or sealing sheet is welded to the manifold.
- both ends of the manifold in this embodiment can be connected to the gas treatment device 17 .
- the gas processing device 17 is a box structure, and the gas processing device 17 is provided with an upper layer of adsorption chamber and the lower cooling chamber, a partition 173 is arranged between the upper adsorption chamber and the lower cooling chamber, and the upper adsorption chamber and the lower cooling chamber are separated by the partition 173.
- the partition 173 is a gas-permeable plate.
- a gas adsorption piece is provided, and a cooling liquid 174 is provided in the lower cooling chamber.
- the cooling liquid 174 in this embodiment may be cooling water or cooling oil.
- a vent pipe 176 is provided on the wall of the lower cooling chamber, the confluence main pipe communicates with the vent pipe 176, and the vent pipe 176 extends to 20 cm below the liquid level of the cooling liquid 174; Fast cooling, the adsorption effect of the cooled combustible mixture is better.
- the separator 173 is a porous plate made of stainless steel or plastic.
- a waterproof and gas-permeable membrane is arranged above the separator 173 in this embodiment.
- the battery module with explosion venting device provided in this embodiment is based on Embodiment 7, and its gas adsorbent includes a filter cotton 172 and an adsorption layer 171, and the filter cotton 172 and the adsorption layer 171 are sequentially arranged on the waterproof above the breathable membrane.
- the material of the adsorption layer 171 may be one or more of activated carbon, molecular sieve, adsorption resin, and graphite, to adsorb the cooled combustible gas mixture.
- the above-mentioned gas treatment device 17 also includes an exhaust pipe 175, which is arranged on the top of the upper adsorption chamber and communicates with the upper adsorption chamber;
- the use process of the battery module with explosion venting device in this embodiment is as follows: when one or several battery bodies 15 in the box structure have thermal runaway and the electrolyte reacts to generate flammable mixed gas, the flammable mixed gas can pass through Explosion venting pipe 13, confluence branch pipe 161, confluence main pipe and ventilation pipe 176 are collectively collected in the lower cooling chamber of the gas treatment device 17, and the temperature is lowered through the cooling liquid in the lower cooling chamber, and the cooled flammable mixed gas is precipitated from the cooling liquid , pass through the partition 173 and the waterproof breathable membrane to filter out particle molecules on the filter cotton 172, enter the adsorption layer 171 to absorb the combustible gas components in the combustible gas mixture, and the combustible gas mixed gas is discharged from the exhaust pipe 175.
- the number of battery bodies 15 in the present application can be specifically set according to the battery capacity requirements of the work object, and can be 2, 3, 4, 5, 6, 7, 8, 9 or even more.
- the arrangement of each battery body 15 is an existing conventional arrangement; the distance between the protrusion 31 and the outlet of the detonation pipe 13 can be 1mm, 2mm, 3mm, 4mm and 5mm, as long as it is not greater than 5mm
- the vent pipe 176 can be extended to not less than 20cm below the liquid level of the cooling liquid 174, which can be 20cm, 25cm, 30cm, etc.
- the battery box with explosion venting channel provided by this embodiment includes a battery cavity 21, an adsorption cavity 23 and a gas collection pipeline 29, and a battery module is arranged in the battery cavity 21, and the battery module It includes a plurality of batteries with explosion relief devices, and the electrolyte chamber of the battery module communicates with the adsorption chamber 23 through the gas collection pipeline 29 .
- the battery box with the explosion venting channel in this embodiment has a rectangular parallelepiped structure.
- the battery module of this embodiment includes 12 groups of batteries 28, which can be the batteries in Embodiment 1 or Embodiment 2, and the 12 groups of batteries 28 are divided into two rows, and each row has 6 groups of batteries 28 , the batteries 28 in each row are stacked side by side, the batteries 28 in two rows are arranged oppositely, each battery 28 is provided with an explosion vent, and the gas collection pipeline 29 communicates with the explosion vent on each battery 28 .
- the explosion vent can be set integrally with the battery 28, or can be set separately from the battery 28.
- the number of batteries 28 in this embodiment can be 1 group, 2 groups, 3 groups, 4 groups, 5 groups, 6 groups, 7 groups, 8 groups, or even more groups, and its specific number is matched according to the battery capacity requirements .
- the gas collection pipeline 29 of this embodiment includes a branch pipe 291 and a standpipe 292, each battery 28 corresponds to a branch pipe 291, and the branch pipe 291 corresponds to the position of the explosion vent on the corresponding battery 28
- One end of the branch pipe 291 communicates with the electrolyte chamber of the battery 28 through the explosion vent
- the other end of the branch pipe 291 communicates with the standpipe 292
- the standpipe 292 communicates with the adsorption chamber 23 .
- the battery cavity 21 of this embodiment includes an inner cavity 211 and an outer cavity 212 arranged outside the inner cavity.
- the outer cavity 212 is arranged outside the side of the inner cavity 211, excluding the bottom outside and the top outside.
- the battery The module is placed in the inner cavity 211 , and the outer cavity 212 is filled with heat-conducting material.
- the heat conduction material in this embodiment may be one or a combination of two or more of heat conduction oil, rosin, heat conduction silica gel and graphite.
- a heat dissipation fin 213 is provided in the battery cavity, one end of the heat dissipation fin 213 is placed in the inner cavity 211, and the other end of the heat dissipation fin 213 is placed in the outer cavity, through which the heat dissipation fin 213
- the heat generated by the battery in the inner cavity is conducted to the outer cavity 212, and then the heat is conducted to the wall of the outer cavity through the heat-conducting material in the outer cavity 212, and the heat is dissipated through the convection between the wall of the outer cavity and the air.
- the battery box with an explosion venting channel is provided with an electrical cavity 22 between the battery cavity 21 and the adsorption cavity 23, and the standpipe 292 runs through the electrical cavity 22 and communicates with the adsorption cavity 23; Ventilation holes 221 are all arranged on each side wall, and the heat generated by the electric wires or electrical control elements in the electrical cavity 22 is dissipated through the ventilation holes 221 .
- the battery cavity 21 , the electrical cavity 22 and the adsorption cavity 23 in this embodiment are arranged in sequence from bottom to top.
- a solid adsorption material is arranged in the adsorption cavity 23 .
- the solid adsorption material is one or a combination of two or more of activated carbon, graphite, adsorption resin, silicon dioxide, porous glass, magnesium oxide, etc.
- a lower partition 26 is provided between the battery chamber 21 and the electrical chamber 22 of this embodiment, an upper partition 25 is provided between the electrical chamber 22 and the adsorption chamber 23, and the lower partition 26 and Two via holes 262 are provided on the upper partition 25, and each via hole 262 corresponds to a standpipe 292.
- the adsorption cavity 23 is connected, and the upper partition 25 extends to the cavity wall of the electrical cavity 22 and is closely connected with the cavity wall of the electrical cavity 22 .
- an elastic gasket is provided at the connection between the through hole of the upper partition 25 and the standpipe 292
- an elastic gasket is provided at the connection between the through hole of the lower partition 26 and the standpipe 292 .
- the elastic sealing gasket is an elastic rubber or plastic gasket or other mechanical components capable of sealing.
- a downwardly extending annular boss 261 is provided at the bottom of the lower partition 26, and the top opening of the inner cavity 211, the annular boss 1 is clamped at the top opening of the inner cavity 1 and extends to the bottom of the top opening to close the inner cavity. 211 is sealed; the edge of the lower partition 26 extends to the cavity wall of the outer cavity 212 and closely fits with the cavity wall of the outer cavity 212 to seal the outer cavity 212 .
- a vent pipe 242 is provided in the adsorption chamber 23, and there are two vent pipes 242, and the two vent pipes 242 are arranged side by side and arranged along the height direction in the adsorption chamber 23.
- the bottom of the bottom is connected with the upper surface of the upper partition 25, the top of the vent pipe 242 extends to the top of the adsorption chamber 23, and the vertical pipe 292 runs through the upper partition 25 and is placed in the lumen of the vent pipe 242.
- Each vertical pipe 292 corresponds to a Root standpipe 292 is provided with ventilating mesh on ventilating pipe 242, and standpipe 292 extends in the lumen of ventilating pipe 242 and is communicated with adsorption chamber 23 by ventilating mesh; 242, and pass through the ventilation mesh on the ventilation pipe 242 to disperse in the solid adsorption material to adsorb the combustible gas components in the combustible gas mixture.
- the top opening of the adsorption chamber 23 in this embodiment is provided with an adsorption chamber upper cover 24 at the top opening of the adsorption chamber 23 , and an exhaust pipe 241 communicating with the adsorption chamber 23 is arranged on the adsorption chamber upper cover 24 .
- a battery holder 27 is provided in the inner cavity 211 of this embodiment, and 12 battery storage compartments are arranged on the battery support 27, and the 12 battery storage compartments are divided into two rows, and the batteries are placed in two rows. The compartments are separated by partitions, and one battery is placed in each battery compartment. It should be noted that the number of battery storage compartments on the battery holder 27 is in one-to-one correspondence with the number of batteries.
- the battery storage compartment in this embodiment can be movable, such as a drawer-type pull-out activity room; it can also be defined as a fixed square grid.
- the battery box with the explosion venting channel of the present embodiment can be 1, 2, 3, 4, 5, 6, or even more, arranged side by side with each other, each battery box with the explosion venting channel
- the adsorption chamber 23 on the box communicates with the collection pipe through the exhaust pipe 241 .
- the collecting pipe in this embodiment communicates with the gas collection device, which may be a collection tank, a collection box or other gas-enclosed containers.
- the gas collection device which may be a collection tank, a collection box or other gas-enclosed containers.
- the battery box with explosion venting passage of the present application when thermal runaway occurs in one of the batteries, the flammable substances and combustion-supporting substances in the gas accumulated in the battery are limited to the gas collection pipe 29, and are collected through the gas collection pipe 29 to
- the adsorption chamber can prevent the flame from directly contacting other batteries, avoiding the rapid diffusion of heat, effectively slowing down the intensity of thermal runaway, and avoiding the chain reaction of other battery units being ignited.
- Adsorption treatment can be safely discharged after removing combustible components, which is in line with the concept of environmental protection.
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Abstract
A battery having an explosion venting device, a battery module, and a battery box having an explosion venting channel, the battery having an explosion venting device comprising a cover plate (11) and an explosion venting pipe (13), an explosion venting port (18) is provided on the cover plate (11), the explosion venting pipe (13) communicates with the explosion venting port (18), and an explosion venting membrane (19) is radially disposed within the explosion venting port (18) or the explosion venting membrane (19) is radially disposed within the explosion venting pipe (13). When thermal runaway occurs in the battery, the battery is a high-temperature heat source, and a generated high-temperature combustible gas is discharged by passing through the explosion venting pipe, during the whole process the high-temperature combustible gas does not make contact with the high-temperature heat source and the air, thereby greatly reducing the risk of fire.
Description
本申请属于电池技术领域,具体涉及一种带有泄爆装置的电池、电池模组及具有泄爆通道的电池箱。The application belongs to the technical field of batteries, and in particular relates to a battery with an explosion venting device, a battery module and a battery box with an explosion venting channel.
新能源电池是提供动力来源的电源,多指为电动汽车、电动列车、电动自行车等提供动力的蓄电池。然而在使用时,电池的过热、过充、过放会导致电池内部集热,大量热量堆积导致电池内部温度上升,当温度上升至电池所能承受的极限时会出现热失控,当电池热失控时会产生大量可燃混合气体,例如:H
2、CO、CH
4等,这些可燃混合气体在电池内部积聚使电池内部压力上升,当电池内部压力达到一定界限后,电池会自身泄爆将可燃混合气体释放到电池仓内,可燃混合气体与氧气接触极易引发火灾。
New energy batteries are power sources that provide power sources, and mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, etc. However, when in use, overheating, overcharging, and overdischarging of the battery will cause heat accumulation inside the battery, and a large amount of heat accumulation will cause the internal temperature of the battery to rise. When the temperature rises to the limit that the battery can withstand, thermal runaway will occur. When the battery thermal runaway A large amount of flammable mixed gas will be generated, such as: H 2 , CO, CH 4 , etc. These flammable mixed gases will accumulate inside the battery to increase the internal pressure of the battery. When the internal pressure of the battery reaches a certain limit, the battery will vent itself to release the flammable mixed gas. The gas is released into the battery compartment, and the contact of the flammable mixed gas with oxygen can easily cause a fire.
现有技术对电池泄爆有很多研究,主要分为内部泄爆和外部泄爆两种方式,内部泄爆是指在电池内部设置气体吸收材料,例如公告号为CN 102934278A的申请专利,其是在电池壳体内部设置装有气体吸收材料的胶囊,当电池内部温度上升后胶囊破裂释放出气体吸收材料,对产生的可燃混合气进行吸收,防止气体喷出,但是该技术存在气体吸附材料在电池内部高温环境下稳定性和一致性较差的问题,其高温下气体的吸附效率会大幅下降,依旧会存在电池泄爆的情况;外部泄爆是比较常用的方式,其是将电池内部产生的可燃混合气向外排放,例如公告号为CN204991875U的实用新型专利,其是用管路将电池内部与外部的气囊连通,通过气囊收集可燃混合气,气囊增大的同时驱动顶针在外部刺破泄爆膜将压力泄放;但是当电池仓内有多块电池组合设置时,由于一块电池发生热失控渗出的高温可燃混合气会影响其他正常工作的电池,加速其他正常工作的电池发生热失控,同时这种方式存在可燃混合气外泄至环境,造成环境污染。There are many studies on battery explosion venting in the prior art, which are mainly divided into internal explosion venting and external explosion venting. Internal explosion venting refers to the installation of gas absorbing materials inside the battery. For example, the patent application with the announcement number CN 102934278A is A capsule equipped with a gas-absorbing material is installed inside the battery case. When the internal temperature of the battery rises, the capsule bursts and releases the gas-absorbing material, which absorbs the generated combustible gas mixture and prevents the gas from blowing out. However, this technology has gas-absorbing materials in the The problem of poor stability and consistency in the high-temperature environment inside the battery, the gas adsorption efficiency will drop significantly at high temperature, and there will still be battery explosion venting; external explosion venting is a more common method, which is to remove the gas generated inside the battery. The combustible mixture is discharged outward, such as the utility model patent with the notification number CN204991875U, which uses a pipeline to connect the inside of the battery with the external air bag, collects the combustible mixture through the air bag, and drives the thimble to pierce the outside while the air bag increases. The explosion-venting membrane releases the pressure; but when there are multiple batteries in the battery compartment, the high-temperature flammable mixture leaking from one battery will affect other normal working batteries and accelerate the heat generation of other normal working batteries. Out of control, and at the same time, in this way, the flammable mixture leaks to the environment, causing environmental pollution.
此外,现有技术中解决电池箱安全的问题主要考虑的是散热结构的设计, 比如设置排风扇、箱体水冷循环、在箱体设置散热翅片、加入半导体制冷片等,而对电池箱自身的泄爆泄压考虑的较少。例如专利号为CN2020219815768公开了一种具有泄爆功能的电池箱,通过在箱体中设置泄压孔、弹簧和泄压板,当电池发生***时,电池箱内部因***产生的压强通过泄压孔排放入泄压板,经过弹簧的缓冲,使***压强逐渐减轻。该专利仅考虑将电池箱内部的压力释放,减少对电池箱结构的破坏,而释放的可燃气体有遇热发生二次火灾的风险。专利号为CN2019205621548公开了一种具有泄爆功能的新能源电池箱,通过设置包括泄爆板和泄爆螺栓的泄爆装置,并将泄爆板与箱体铰接,一方面能够起到泄爆效果,另一方面使泄爆板泄爆时不会脱离箱体而飞弹至其他设备处。同时设置横梁与泄爆螺栓螺纹连接,只需将螺杆旋出,更换新的金属垫片,再将螺杆穿过泄爆板通孔,将螺杆与横梁旋紧,即可重复使用。该技术仅从结构上解决了泄爆过程中电池箱的安全性和泄爆装置的重复使用,而对可燃气体的扩散形成二次危险源的防范为进一步考虑。In addition, to solve the problem of battery box safety in the prior art, the main consideration is the design of the heat dissipation structure, such as setting exhaust fans, water cooling cycle of the box, setting heat dissipation fins in the box, adding semiconductor cooling fins, etc., while the battery box itself Explosion and pressure relief are less considered. For example, the patent No. CN2020219815768 discloses a battery box with an explosion relief function. By setting a pressure relief hole, a spring and a pressure relief plate in the box, when the battery explodes, the pressure generated by the explosion inside the battery box passes through the pressure relief hole. It is discharged into the pressure relief plate, and after being buffered by the spring, the explosion pressure is gradually reduced. This patent only considers releasing the pressure inside the battery box to reduce damage to the structure of the battery box, and the released combustible gas may cause a secondary fire when heated. The patent number is CN2019205621548, which discloses a new energy battery box with explosion-venting function. By setting up an explosion-venting device including an explosion-venting plate and an explosion-venting bolt, and hinged the explosion-venting plate and the box, on the one hand, it can play an explosion-venting role. As a result, on the other hand, when the explosion venting plate is vented, it will not break away from the box and fly to other equipment. At the same time, the crossbeam and the explosion-venting bolt are set to be threaded, just unscrew the screw, replace with a new metal gasket, then pass the screw through the through hole of the explosion-venting plate, tighten the screw and the crossbeam, and it can be reused. This technology only solves the safety of the battery box and the repeated use of the explosion-venting device in the process of explosion-venting from a structural point of view, and the prevention of secondary hazards caused by the diffusion of combustible gas is a further consideration.
由上述描述可知,如何有效的防止电池因热失控导致发生二次危险,同样也是本领域技术人员亟待解决的问题。From the above description, it can be seen that how to effectively prevent the secondary danger of the battery due to thermal runaway is also an urgent problem to be solved by those skilled in the art.
发明内容Contents of the invention
针对上述现有技术是先将电池内部产生的可燃混合气体先排放至电池仓内,排放至电池仓内的高温可燃混合气体会对其他正常工作的电池造成影响的问题,本申请提出了一种带有泄爆装置的电池、电池模组及具有泄爆通道的电池箱,本申请在电池本体上设置泄爆管,泄爆管与电池的电解液腔连通,通过泄爆管将电池集热产生的可燃混合气***掉,且不会影响其他电池的正常工作,其具体技术方案如下:In view of the above-mentioned existing technology, the combustible mixed gas generated inside the battery is first discharged into the battery compartment, and the high-temperature combustible mixed gas discharged into the battery compartment will affect other normally working batteries. This application proposes a For batteries with explosion-venting devices, battery modules and battery boxes with explosion-venting channels, this application installs an explosion-venting tube on the battery body, which communicates with the electrolyte chamber of the battery, and collects heat from the battery through the explosion-venting tube. The generated combustible mixture is discharged without affecting the normal operation of other batteries. The specific technical scheme is as follows:
一种带有泄爆装置的电池,包括盖板和泄爆管,所述盖板上设置有泄爆口,所述泄爆管与泄爆口连通,所述泄爆口内沿径向设置有泄爆膜,或所述泄爆管内沿径向设置有泄爆膜。A battery with an explosion venting device, comprising a cover plate and an explosion venting tube, the cover plate is provided with an explosion venting port, the explosion venting tube communicates with the explosion venting port, and the explosion venting port is radially provided with An explosion venting membrane, or an explosion venting membrane is arranged radially in the explosion venting pipe.
进一步地,所述泄爆管内设置有凸台,所述泄爆管通过凸台与泄爆膜固定 连接;或所述泄爆膜上设置有凸台,所述泄爆膜通过凸台与泄爆口固定连接。Further, a boss is arranged inside the explosion venting tube, and the explosion venting tube is fixedly connected to the explosion venting membrane through the boss; or a boss is arranged on the explosion venting membrane, and the explosion venting membrane is connected to the explosion venting membrane through the boss Explosion port fixed connection.
进一步地,所述盖板与泄爆管一体式连接;或所述泄爆管的底部设置有向外凸起的连接盘,所述泄爆管通过连接盘与盖板呈分体式连接。Further, the cover plate is integrally connected with the explosion venting pipe; or the bottom of the explosion venting pipe is provided with an outwardly protruding connection plate, and the explosion venting pipe is connected to the cover plate in a split form through the connection plate.
进一步地,所述泄爆管的顶部设置有向外凸起的连接盘。Further, the top of the detonation pipe is provided with an outwardly protruding connecting plate.
同时,本申请还提供一种带有泄爆装置的电池模组,包括电池模组本体,所述电池模组本体包括汇流管以及多个上述带有泄爆装置的电池,多个带有泄爆装置的电池的电解液腔均通过泄爆管与汇流管连通,所述汇流管穿过电池模组本体延伸至电池模组本体的外侧。At the same time, the present application also provides a battery module with an explosion venting device, which includes a battery module body, the battery module body includes a manifold and a plurality of the above-mentioned batteries with an explosion venting device, and a plurality of batteries with an explosion venting device. The electrolyte chambers of the batteries of the explosion device communicate with the confluence pipe through the explosion vent pipe, and the confluence pipe passes through the battery module body and extends to the outside of the battery module body.
进一步地,所述汇流管包括汇流总管和汇流支管,每个泄爆管对应与一个汇流支管连通,所述汇流支管穿过电池模组本体与设置在电池模组本体外侧的汇流总管连通。Further, the confluence pipe includes a confluence main pipe and a confluence branch pipe, and each detonation pipe communicates with a confluence branch pipe, and the confluence branch pipe passes through the battery module body and communicates with the confluence main pipe arranged outside the battery module body.
进一步地,所述汇流支管通过对接接头与泄爆管连通。Further, the converging branch pipe communicates with the explosion relief pipe through a butt joint.
进一步地,所述带有泄爆装置的电池模组还包括与汇流总管连通的气体处理装置。Further, the battery module with an explosion relief device further includes a gas treatment device communicated with the manifold.
进一步地,所述气体处理装置包括上层吸附腔和下层降温腔,所述上层吸附腔和下层降温腔通过隔板分隔,所述隔板为透气板,所述汇流总管与下层降温腔连通。Further, the gas processing device includes an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition, the partition is a gas-permeable plate, and the confluence main pipe communicates with the lower cooling chamber.
进一步地,所述上层吸附腔内设置有气体吸附件,所述下层降温腔内设置有冷却液;所述上层吸附腔的顶部连通有排气管。Further, the upper adsorption chamber is provided with a gas adsorbent, and the lower cooling chamber is provided with cooling liquid; the top of the upper adsorption chamber is connected to an exhaust pipe.
此外,针对上述电池因热失控导致发生二次危险的问题,本申请还提出了一种具有泄爆通道的电池箱,其具体技术方案如下:In addition, in view of the above-mentioned problem of secondary danger caused by thermal runaway of the battery, this application also proposes a battery box with an explosion venting channel, and its specific technical solution is as follows:
一种具有泄爆通道的电池箱,包括电池腔、吸附腔和气体收集管路,所述电池腔内设置有电池模组,所述电池模组通过气体收集管路与吸附腔连通,电池模组包括多个上述带有泄爆装置的电池。A battery box with an explosion venting channel, comprising a battery cavity, an adsorption cavity and a gas collection pipeline, the battery cavity is provided with a battery module, the battery module communicates with the adsorption cavity through the gas collection pipeline, the battery module The pack comprises a plurality of the above-mentioned batteries with explosion venting.
进一步地,多个带有泄爆装置的电池并列设置,所述气体收集管路与电池上的泄爆口连通。Further, a plurality of batteries with explosion venting devices are arranged side by side, and the gas collection pipeline communicates with the explosion venting ports on the batteries.
进一步地,所述气体收集管路包括支管和立管,每个电池对应一个支管,所述立管通过支管与电池上的泄爆口连通,所述立管与吸附腔连通。Further, the gas collection pipeline includes a branch pipe and a standpipe, each battery corresponds to a branch pipe, the standpipe communicates with the explosion vent on the battery through the branch pipe, and the standpipe communicates with the adsorption chamber.
进一步地,所述电池腔包括内腔以及设置在内腔外侧的外腔,所述电池模组置于内腔中,所述外腔中填充有导热材料,所述的导热材料可以是导热油、松香、导热硅胶和石墨中的一种或两种及两种以上的组合。Further, the battery cavity includes an inner cavity and an outer cavity arranged outside the inner cavity, the battery module is placed in the inner cavity, and the outer cavity is filled with a heat-conducting material, and the heat-conducting material may be heat-conducting oil , rosin, thermally conductive silica gel and graphite, or a combination of two or more.
进一步地,所述电池腔内设置有散热翘片,所述散热翘片的一端置于内腔中,所述散热翘片的另一端置于外腔中。Further, a heat dissipation fin is provided in the battery cavity, one end of the heat dissipation fin is placed in the inner cavity, and the other end of the heat dissipation fin is placed in the outer cavity.
进一步地,所述具有泄爆通道的电池箱还包括设置在电池腔和吸附腔之间的电气腔,所述立管贯穿电气腔与吸附腔连通。Further, the battery box with an explosion venting channel further includes an electrical cavity arranged between the battery cavity and the adsorption cavity, and the standpipe passes through the electrical cavity and communicates with the adsorption cavity.
进一步地,所述吸附腔内设置有固体吸附材料,所述固体吸附材料是活性炭、石墨、吸附树脂、二氧化硅、多孔玻璃、氧化镁等中的一种或两种及两种以上的组合。Further, the adsorption cavity is provided with a solid adsorption material, and the solid adsorption material is one or a combination of two or more of activated carbon, graphite, adsorption resin, silicon dioxide, porous glass, magnesium oxide, etc. .
进一步地,所述电池腔与电气腔之间设置有下隔板,所述电气腔与吸附腔之间设置有上隔板,所述下隔板和上隔板上均设置有过孔,所述立管依次贯穿下隔板上的过孔和上隔板上的过孔与吸附腔连通,所述下隔板的过孔与立管的连接处以及上隔板的过孔与立管的连接处均设置有密封垫圈。Further, a lower partition is provided between the battery chamber and the electrical chamber, an upper partition is provided between the electrical chamber and the adsorption chamber, and via holes are provided on the lower partition and the upper partition, so The standpipe passes through the via hole on the lower partition and the via hole on the upper partition to communicate with the adsorption chamber in turn, the connection between the via hole of the lower partition and the standpipe, and the connection between the via hole of the upper partition and the standpipe. The joints are provided with sealing gaskets.
进一步地,所述下隔板的底部设置有向下延伸的环形,所述内腔的顶部开口,所述环形凸台卡在内腔的顶部开口处并将内腔密封;且所述下隔板的边缘延伸至外腔的腔壁处并将外腔封。Further, the bottom of the lower partition is provided with a ring extending downwards, the top opening of the inner cavity is opened, and the annular boss is clamped at the top opening of the inner cavity and seals the inner cavity; and the lower partition The edge of the plate extends to the wall of the outer cavity and seals the outer cavity.
进一步地,所述吸附腔内设置有透气管,所述透气管贯通吸附腔,所述透气管上设置有透气网孔,所述立管延伸至透气管的管腔中并通过透气网孔与吸附腔连通。Further, a ventilation tube is provided in the adsorption cavity, the ventilation tube runs through the adsorption cavity, and a ventilation mesh is arranged on the ventilation tube, and the standpipe extends into the lumen of the ventilation tube and passes through the ventilation mesh and The adsorption chamber is connected.
进一步地,所述吸附腔的顶部开口,且所述吸附腔的顶部开口处设置有吸附腔上盖板,所述吸附腔上盖板上设置有与吸附腔连通的排气管。Further, the top opening of the adsorption chamber is open, and an upper cover of the adsorption chamber is provided at the top opening of the adsorption chamber, and an exhaust pipe communicating with the adsorption chamber is arranged on the upper cover of the adsorption chamber.
进一步地,所述电气腔的腔壁上设置有通风孔。Further, ventilation holes are provided on the cavity wall of the electrical cavity.
进一步地,所述内腔中设置有电池支架,所述电池支架上并列设置有多个 电池放置仓,每个电池放置仓内对应放置一个电池。Further, a battery holder is arranged in the inner cavity, and a plurality of battery storage bins are arranged side by side on the battery holder, and one battery is correspondingly placed in each battery storage bin.
进一步地,所述具有泄爆通道的电池箱有多个,多个具有泄爆通道的电池箱并列是设置,且多个具有泄爆通道的电池箱上的吸附腔均通过排气管与汇集管连通。Further, there are multiple battery boxes with explosion venting passages, and multiple battery boxes with explosion venting passages are arranged side by side, and the adsorption chambers on the battery boxes with explosion venting passages are connected to the collection chamber through the exhaust pipe. The tube is connected.
进一步地,所述汇集管与气体收集装置连通。Further, the collection pipe communicates with the gas collection device.
与现有技术相比,本申请的有益效果在于:Compared with the prior art, the beneficial effects of the present application are:
1.本申请提供的带有泄爆装置的电池包括盖板和泄爆管,在盖板上设置有泄爆口,泄爆管与泄爆口连通,泄爆口内沿径向设置有泄爆膜,或泄爆管内沿径向设置有泄爆膜。当电池发生热失控时,电池就是高温热源,产生的高温可燃气体通过泄爆管泄放,高温的可燃混合气全程不与高温热源和空气接触,大幅降低了起火的风险。1. The battery with explosion-venting device provided by this application includes a cover plate and an explosion-venting tube. An explosion-venting port is arranged on the cover plate. The explosion-venting membrane, or the explosion-venting tube is provided with an explosion-venting membrane along the radial direction. When the battery is thermally out of control, the battery is a high-temperature heat source, and the high-temperature combustible gas generated is released through the explosion vent tube. The high-temperature combustible gas mixture does not come into contact with the high-temperature heat source and air throughout the process, which greatly reduces the risk of fire.
2.本申请电池中,在泄爆管内设置有凸台,泄爆管通过凸台与泄爆膜固定连接;或泄爆膜上设置有凸台,泄爆膜通过凸台与泄爆口固定连接。通过凸台可使得泄爆口或泄爆管与泄爆膜连接的更加牢固。2. In the battery of this application, a boss is provided in the explosion venting tube, and the explosion venting tube is fixedly connected to the explosion venting membrane through the boss; or the explosion venting membrane is provided with a boss, and the explosion venting membrane is fixed to the explosion venting port through the boss connect. The explosion vent or the explosion vent pipe can be connected more firmly with the explosion vent membrane through the boss.
3.本申请电池中,盖板与泄爆管一体式连接,可在盖板上一体冲压形成泄爆管,操作工艺简单;或在泄爆管的底部设置向外凸起的连接盘,泄爆管通过连接盘与盖板呈分体式连接,通过连接盘使得泄爆管在与泄爆口的顶部焊接时能够焊接的更加牢固,且方便焊接操作。3. In the battery of this application, the cover plate and the explosion vent tube are integrally connected, and the explosion vent tube can be formed by integral stamping on the cover plate, and the operation process is simple; The explosion tube is connected to the cover plate through the connection plate in a split type, and the connection plate enables the explosion vent tube to be welded more firmly when it is welded to the top of the explosion vent port, and the welding operation is convenient.
4.本申请电池中,在泄爆管的顶部设置有向外凸起的连接盘,通过泄爆管顶部的连接盘可方便泄爆管与其他管路进行连接。4. In the battery of this application, an outwardly protruding connection plate is provided on the top of the explosion vent tube, through which the explosion vent tube can be conveniently connected to other pipelines.
5.本申请提供的带有泄爆装置的电池模组包括汇流管以及多个带有泄爆装置的电池,多个电池的电解液腔均通过泄爆管与汇流管连通,汇流管穿过电池模组本体延伸至电池模组本体的外侧。在某一个电池发生热失控致使电解液发生反应产生可燃混合气时,可燃混合气体沿汇流管排至电池模组本体外侧,高温的可燃混合气体不会与其他的电池接触,不会影响其他电池的正常工作;同时高温的可燃混合气体***的全程不会与其他高温热源接触,也不会接触氧气, 大幅降低了起火的风险。5. The battery module with explosion venting device provided by this application includes a manifold and multiple batteries with explosion venting devices. The electrolyte chambers of multiple batteries are connected to the manifold through the explosion venting tube, and the manifold passes through The battery module body extends to the outside of the battery module body. When the thermal runaway of a certain battery causes the electrolyte to react to generate flammable mixed gas, the flammable mixed gas will be discharged to the outside of the battery module body along the manifold, and the high-temperature flammable mixed gas will not contact other batteries and will not affect other batteries At the same time, the high-temperature combustible mixed gas will not come into contact with other high-temperature heat sources or oxygen during the whole discharge process, which greatly reduces the risk of fire.
6.本申请电池模组中,汇流管包括汇流总管和汇流支管,汇流支管与泄爆管连通,汇流支管穿过电池模组本体与汇流总管连通。汇流支管方便将可燃混合气从电池模组本体的腔体中导出,汇流总管方便对可燃混合气进行集中收集。6. In the battery module of this application, the confluence pipe includes a confluence main pipe and a confluence branch pipe, the confluence branch pipe communicates with the explosion vent pipe, and the confluence branch pipe passes through the battery module body and communicates with the confluence main pipe. The confluence branch pipe facilitates the export of the combustible mixture from the cavity of the battery module body, and the confluence main pipe facilitates the centralized collection of the combustible mixture.
7.本申请电池模组中,汇流支管通过对接接头与泄爆管连通;通过对接接头可使得汇流支管与泄爆管连接的更加牢固。7. In the battery module of this application, the confluence branch pipe communicates with the explosion vent pipe through the butt joint; the connection between the confluence branch pipe and the explosion vent pipe can be made more firm through the butt joint.
8.本申请带有泄爆装置的电池模组还包括与汇流总管连通的气体处理装置,通过气体处理装置对可燃混合气进行集中处理,避免可燃混合气与空气接触发生火灾,同时也避免了可燃混合气排放至空气中污染环境,符合新能源电池绿色发展、环保的理念。8. The battery module with explosion venting device of this application also includes a gas treatment device connected to the confluence main pipe, through which the combustible mixture is processed centrally to avoid fire caused by the contact of the combustible mixture with air, and at the same time avoid The discharge of combustible mixed gas into the air pollutes the environment, which is in line with the concept of green development and environmental protection of new energy batteries.
9.本申请电池模组中,气体处理装置包括上层吸附腔和下层降温腔,上层吸附腔和下层降温腔通过隔板分隔,隔板为透气板,汇流总管与下层降温腔连通。通过下层降温腔内的冷却液先对可燃混合气进行降温,降温后气体从冷却液中析出通过上层吸附腔吸附,冷却后再吸附能够提高可燃气体成分的吸附效率,吸附完可燃气体成分的混合气可以安全排放。9. In the battery module of this application, the gas treatment device includes an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition, the partition is a breathable plate, and the confluence main pipe communicates with the lower cooling chamber. The cooling liquid in the lower cooling chamber first cools the combustible gas mixture. After cooling, the gas precipitates from the cooling liquid and is adsorbed by the upper adsorption chamber. After cooling, the adsorption can improve the adsorption efficiency of combustible gas components, and the mixture of combustible gas components is absorbed. The gas can be safely vented.
10.本申请提供的具有泄爆通道的电池箱通过气体收集管路将电池腔内的电池模组与吸附腔连通,可将因内部集热导致电池热失控产生的可燃混合气体及时排出电池腔,可燃混合气体不会在电池腔内形成憋压,防止对电池箱结构产生破坏;同时也可有效的将电池热失控产生的可燃混合气体与助燃物(空气)进行隔离,防止可燃混合气体与助燃物(空气)混合发生二次爆燃产生危险;可燃混合气体经由气体收集管路进入吸附腔被吸附腔内的固体吸附材料吸附处理后除去可燃成分,可安全排放。10. The battery box with an explosion vent channel provided by this application connects the battery module in the battery cavity with the adsorption cavity through the gas collection pipeline, and can discharge the combustible mixed gas generated by the thermal runaway of the battery due to internal heat collection out of the battery cavity in time , the flammable mixed gas will not form a suppressed pressure in the battery cavity, preventing damage to the structure of the battery box; at the same time, it can also effectively isolate the flammable mixed gas generated by the thermal runaway of the battery from the combustible material (air), preventing the flammable mixed gas from Secondary deflagration occurs when the combustible material (air) is mixed, causing danger; the combustible mixed gas enters the adsorption chamber through the gas collection pipeline and is adsorbed by the solid adsorption material in the adsorption chamber to remove the combustible components and can be discharged safely.
11.本申请电池箱中,气体收集管路与电池上的泄爆口连通;当电池模组中某一个电池单体发生热失控致使电解液分解产生可燃混合气体,高温可燃混合气体沿气体收集管路泄放至电池箱的吸附腔,全过程不与电池模组中的其他电池单体接触,不会影响其他电池单体的正常工作;同时高温的可燃混合气体 ***的全程不会与其他高温热源接触,也不会接触氧气,大大降低了起火的风险。11. In the battery box of this application, the gas collection pipeline is connected to the explosion vent on the battery; when a battery cell in the battery module is thermally out of control and the electrolyte decomposes to generate flammable mixed gas, the high-temperature flammable mixed gas is collected along the gas The pipeline is discharged to the adsorption chamber of the battery box, and the whole process does not contact with other battery cells in the battery module, and will not affect the normal operation of other battery cells; at the same time, the high-temperature combustible gas mixture will not contact with other cells during the whole discharge process. High-temperature heat source contact, and no contact with oxygen, greatly reducing the risk of fire.
12.本申请电池箱中,电池腔包括内腔以及设置在内腔外侧的外腔,电池模组置于内腔中,外腔中填充有导热材料;通过导热材料能够将电池模组工作时产生的热量传递至外腔外侧,对电池模组进行散温、保护。12. In the battery box of this application, the battery cavity includes an inner cavity and an outer cavity arranged outside the inner cavity. The battery module is placed in the inner cavity, and the outer cavity is filled with heat-conducting materials; the heat-conducting material can keep the battery module working. The generated heat is transferred to the outside of the outer cavity to dissipate and protect the battery module.
13.本申请电池箱中,电池腔内设置有散热翘片,散热翘片的一端置于内腔中,散热翘片的另一端置于外腔中。通过散热翅片能够快速地将内腔的温度传递外腔,增大了热量的传递面积,提高了散热效率。13. In the battery box of the present application, a cooling fin is installed in the battery cavity, one end of the cooling fin is placed in the inner cavity, and the other end of the cooling fin is placed in the outer cavity. The temperature of the inner cavity can be quickly transferred to the outer cavity through the cooling fins, which increases the heat transfer area and improves the heat dissipation efficiency.
14.本申请具有泄爆通道的电池箱还包括设置在电池腔和吸附腔之间的电气腔,在电气腔内方便布置电池的接电路线或控制电路元器件;在电气腔的腔壁上设置有通风孔,通过通风孔能够对电气腔内的电路线或控制电路元器件产生的热量进行散发。14. The battery box with explosion-venting channels in this application also includes an electrical cavity arranged between the battery cavity and the adsorption cavity, in which it is convenient to arrange the connecting circuit wires or control circuit components of the battery; on the cavity wall of the electrical cavity Ventilation holes are provided, through which heat generated by circuit wires or control circuit components in the electrical cavity can be dissipated.
15.本申请电池箱中,在吸附腔内设置有固体吸附材料,通过固体吸附材料可对可燃混合气体中的可燃气体成分进行吸附,吸附完可燃气体之后再排出,能够降低可燃混合气体发生二次燃烧的风险。15. In the battery box of this application, a solid adsorption material is provided in the adsorption chamber, through which the combustible gas components in the combustible gas mixture can be adsorbed, and the combustible gas can be discharged after the combustible gas is absorbed, which can reduce the occurrence of secondary gas in the combustible gas mixture. risk of secondary combustion.
16.本申请电池箱中,在下隔板的底部设置有环形凸台,环形凸台卡在内腔的顶部开口处并将内腔密封;通过环形凸台既方便了下隔板与内腔的紧密配合连接,又方便了内腔的密封;同时下隔板的边缘延伸至外腔的腔壁处并将外腔密封,方便了外腔的密封。16. In the battery box of this application, an annular boss is provided at the bottom of the lower partition, and the annular boss is clamped at the top opening of the inner cavity and seals the inner cavity; the ring boss facilitates the connection between the lower partition and the inner cavity. The tight fitting connection facilitates the sealing of the inner cavity; at the same time, the edge of the lower partition extends to the cavity wall of the outer cavity and seals the outer cavity, which facilitates the sealing of the outer cavity.
17.本申请电池箱中,在吸附腔内设置有透气管,透气管贯通吸附腔,透气管上设置有透气网孔,立管延伸至透气管的管腔中并通过透气网孔与吸附腔连通。通过透气网孔将可燃混合气体均匀地弥散在固体吸附材料中,使可燃混合气体中的可燃气体成分被固体吸附材料吸附地更充分。17. In the battery box of this application, a ventilation tube is provided in the adsorption cavity, the ventilation tube runs through the adsorption cavity, and the ventilation tube is provided with a ventilation mesh, and the standpipe extends into the lumen of the ventilation tube and passes through the ventilation mesh and the adsorption cavity. connected. The combustible mixed gas is uniformly dispersed in the solid adsorption material through the air-permeable mesh, so that the combustible gas components in the combustible mixed gas are more fully adsorbed by the solid adsorbent.
18.本申请电池箱中,吸附腔上盖板上设置有与吸附腔连通的排气管,通过排气管能够方便吸附完可燃成分的气体进行排放或进一步收集。18. In the battery box of this application, the upper cover of the adsorption chamber is provided with an exhaust pipe that communicates with the adsorption chamber, through which the gas that has absorbed combustible components can be easily discharged or further collected.
19.本申请电池箱中,电池支架上并列设置有多个电池放置仓,每个电池 放置仓内对应放置一个电池;通过电池支架能够对各个电池单体的位置进行固定。19. In the battery box of this application, multiple battery compartments are arranged side by side on the battery bracket, and a battery is placed in each battery compartment; the position of each battery cell can be fixed by the battery bracket.
20.本申请电池箱中,汇集管与气体收集装置连通,对吸附完可燃气体成分的气体进行集中收集,防止污染环境。20. In the battery box of this application, the collecting pipe is connected with the gas collection device, and the gas that has absorbed combustible gas components is collected in a centralized manner to prevent environmental pollution.
图1为本申请实施例1中带有泄爆装置的电池的结构示意图;Fig. 1 is the structural representation of the battery with explosion-venting device in embodiment 1 of the present application;
图2为本申请实施例1中盖板与泄爆管一体式连接的结构示意图;Fig. 2 is a structural schematic diagram of the integrated connection between the cover plate and the explosion vent pipe in Embodiment 1 of the present application;
图3为本申请实施例1中泄爆管顶部外侧设置有连接盘的结构示意图;Fig. 3 is a structural schematic diagram of a connecting plate provided on the outside of the top of the detonation pipe in Example 1 of the present application;
图4为本申请实施例2中盖板与泄爆管分体式连接的结构示意图一;Fig. 4 is a structural schematic diagram 1 of the split connection between the cover plate and the detonation pipe in Example 2 of the present application;
图5为本申请实施例2中盖板与泄爆管分体式连接的结构示意图二;Fig. 5 is the structural schematic diagram II of the split connection between the cover plate and the detonation pipe in Embodiment 2 of the present application;
图6为本申请实施例4中汇流管的结构示意图;FIG. 6 is a schematic structural view of the manifold in Embodiment 4 of the present application;
图7为本申请实施例3中泄爆装置与电池本体的连接示意图;7 is a schematic diagram of the connection between the explosion venting device and the battery body in Embodiment 3 of the present application;
图8为本申请实施例6中安装有泄爆装置的电池模组的结构示意图;FIG. 8 is a schematic structural view of a battery module equipped with an explosion venting device in Embodiment 6 of the present application;
图9为本申请实施例7中气体处理装置的纵向剖面图;Fig. 9 is a longitudinal sectional view of the gas treatment device in Example 7 of the present application;
图10为本申请实施例9中具有泄爆通道的电池箱的结构示意图;Fig. 10 is a schematic structural view of a battery box with an explosion-venting passage in Embodiment 9 of the present application;
图11为本申请实施例9中具有泄爆通道的电池箱的***分解图;Fig. 11 is an exploded exploded view of a battery box with an explosion venting channel in Embodiment 9 of the present application;
图12为本申请实施例9中具有泄爆通道的电池箱的纵向剖面图;Figure 12 is a longitudinal sectional view of a battery box with an explosion venting passage in Example 9 of the present application;
图13为本申请实施例9中吸附腔上盖的结构示意图;Figure 13 is a schematic structural view of the upper cover of the adsorption chamber in Example 9 of the present application;
图14为本申请实施例9中电池腔的结构示意图;FIG. 14 is a schematic structural view of the battery cavity in Example 9 of the present application;
图15为本申请实施例9中电池支架的结构示意图;Figure 15 is a schematic structural view of the battery holder in Example 9 of the present application;
图16为本申请实施例9中气体收集管路的结构示意图;Figure 16 is a schematic structural view of the gas collection pipeline in Example 9 of the present application;
图17为本申请实施例9中电池模组的结构示意图;FIG. 17 is a schematic structural diagram of the battery module in Embodiment 9 of the present application;
图18为本申请实施例9中上隔板的结构示意图;Figure 18 is a schematic structural view of the upper partition in Example 9 of the present application;
图19为本申请实施例9中下隔板的结构示意图。FIG. 19 is a schematic structural view of the lower partition in Embodiment 9 of the present application.
附图标记:11-盖板,12-正极柱,13-泄爆管,131-凸台,132-外接螺纹,133-连接盘,14-负极柱,15-电池本体,16-汇流管,161-汇流支管,162-对接 接头,163-密封件,17-气体处理装置,171-吸附层,172-过滤棉,173-隔板,174-冷却液,175-排气管,176-通气管,18-泄爆口,19-泄爆膜,110-注液孔,21-电池腔,22-电气腔,23-吸附腔,24-吸附腔上盖板,25-上隔板,26-下隔板,27-电池支架,28-电池,29-气体收集管路,211-内腔,212-外腔,213-散热翘片,221-通风孔,241-排气管,242-透气管,261-环形凸台,262-过孔,291-支管,292-立管。Reference signs: 11-cover plate, 12-positive pole, 13-explosion vent tube, 131-boss, 132-external thread, 133-connecting plate, 14-negative pole, 15-battery body, 16-combustion pipe, 161-Confluence branch pipe, 162-Butt joint, 163-Seal, 17-Gas treatment device, 171-Adsorption layer, 172-Filter cotton, 173-Separator, 174-Coolant, 175-Exhaust pipe, 176-Path Trachea, 18-explosion vent, 19-explosion venting membrane, 110-liquid injection hole, 21-battery chamber, 22-electrical chamber, 23-absorption chamber, 24-adsorption chamber upper cover, 25-upper partition, 26 -Lower partition, 27-battery bracket, 28-battery, 29-gas collection pipeline, 211-inner cavity, 212-outer cavity, 213-radiating fins, 221-ventilation hole, 241-exhaust pipe, 242- Vent pipe, 261-annular boss, 262-through hole, 291-branch pipe, 292-standpipe.
下面结合附图及实施例对本申请的技术方案进行进一步地解释说明,但本申请并不限于以下说明的实施方式。The technical solutions of the present application will be further explained below in conjunction with the accompanying drawings and embodiments, but the present application is not limited to the implementation manners described below.
本申请提供的带有泄爆装置的电池包括盖板11和泄爆管13,盖板11上设置有泄爆口18,泄爆管13与泄爆口18连通,泄爆口18内沿径向设置有泄爆膜19,或泄爆管13内沿径向设置有泄爆膜19。泄爆管13内设置有凸台,泄爆管13通过凸台与泄爆膜19固定连接;或泄爆膜19上设置有凸台,泄爆膜19通过凸台与泄爆口18固定连接。盖板11与泄爆管13一体式连接,或者泄爆管13的底部设置有向外凸起的连接盘133,泄爆管13通过连接盘133与盖板11呈分体式连接。此外,泄爆管13的顶部也可设置有向外凸起的连接盘133。The battery with the explosion venting device provided by the application includes a cover plate 11 and an explosion venting tube 13, the cover plate 11 is provided with an explosion venting port 18, the explosion venting tube 13 communicates with the explosion venting port 18, and the inner diameter of the explosion venting port 18 is An explosion-venting membrane 19 is arranged in the direction, or an explosion-venting membrane 19 is arranged radially in the explosion-venting pipe 13 . There is a boss in the explosion venting pipe 13, and the explosion venting pipe 13 is fixedly connected with the explosion venting membrane 19 through the boss; or the explosion venting membrane 19 is provided with a boss, and the explosion venting membrane 19 is fixedly connected with the explosion venting port 18 through the boss . The cover plate 11 is integrally connected with the explosion venting pipe 13 , or the bottom of the explosion venting pipe 13 is provided with an outwardly protruding connection plate 133 , and the explosion venting pipe 13 is connected separately with the cover plate 11 through the connecting plate 133 . In addition, the top of the detonation pipe 13 may also be provided with a connecting plate 133 protruding outward.
本申请提供的带有泄爆装置的电池模组包括电池模组本体,电池模组本体包括汇流管16以及多个上述带有泄爆装置的电池,多个带有泄爆装置的电池的电解液腔均通过泄爆管13与汇流管16连通,汇流管16穿过电池模组本体延伸至电池模组本体的外侧。汇流管16包括汇流总管和汇流支管161,每个泄爆管13对应与一个汇流支管161连通,汇流支管161穿过电池模组本体与设置在电池模组本体外侧的汇流总管连通。汇流支管161通过对接接头162与泄爆管13连通。带有泄爆装置的电池模组还包括与汇流总管连通的气体处理装置17。气体处理装置17包括上层吸附腔和下层降温腔,上层吸附腔和下层降温腔通过隔板173分隔,隔板173为透气板,汇流总管与下层降温腔连通。上层吸附腔内设置有气体吸附件,下层降温腔内设置有冷却液174;上层吸附腔的顶部连通有排气管76。The battery module with explosion venting device provided by the present application includes a battery module body, the battery module body includes a manifold 16 and a plurality of the above-mentioned batteries with explosion venting devices, and the electrolysis of a plurality of batteries with explosion venting devices The liquid chambers communicate with the confluence pipe 16 through the explosion venting pipe 13, and the confluence pipe 16 extends through the battery module body to the outside of the battery module body. The confluence pipe 16 includes a confluence main pipe and a confluence branch pipe 161. Each detonation pipe 13 communicates with a confluence branch pipe 161. The confluence branch pipe 161 passes through the battery module body and communicates with the confluence pipe arranged outside the battery module body. The confluence branch pipe 161 communicates with the detonation pipe 13 through a butt joint 162 . The battery module with explosion relief device also includes a gas treatment device 17 communicated with the manifold. The gas treatment device 17 includes an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition 173, the partition 173 is a breathable plate, and the confluence main pipe communicates with the lower cooling chamber. A gas adsorption piece is arranged in the upper adsorption chamber, and a cooling liquid 174 is arranged in the lower cooling chamber; an exhaust pipe 76 is connected to the top of the upper adsorption chamber.
实施例1Example 1
如图1至图7所示,本实施例提供的带有泄爆装置的电池包括泄爆管13、电池本体15以及设置在电池本体15上方的盖板11,在盖板11上设置有泄爆口18,在盖板11上与泄爆口18的顶部对应的位置一体冲压成型有泄爆管13,在泄爆口18的底部沿径向设置有泄爆膜19,泄爆膜19与泄爆管13沿着盖板11呈上下相对设置,泄爆管13通过泄爆膜19与电池本体15的电解液腔连通;在盖板11上设置有注液孔110,注液孔110与泄爆口18并列设置;在盖板11上泄爆管13的两侧分别是电池本体15的正极柱12和负极柱14。优选的,在泄爆管13的顶部外侧设置有外接螺纹132,通过外接螺纹132可以方便泄爆管13与其他管道进行可拆卸连接。As shown in Figures 1 to 7, the battery with explosion venting device provided in this embodiment includes an explosion venting tube 13, a battery body 15, and a cover plate 11 arranged above the battery body 15, and a venting device is arranged on the cover plate 11. Explosion opening 18, on the cover plate 11 and the position corresponding to the top of explosion venting opening 18, an explosion venting pipe 13 is integrally stamped and formed, and an explosion venting membrane 19 is arranged radially at the bottom of the explosion venting opening 18, and the explosion venting membrane 19 and Explosion venting pipe 13 is arranged up and down oppositely along cover plate 11, and explosion venting pipe 13 communicates with the electrolyte chamber of battery body 15 through explosion venting film 19; Explosion vents 18 are arranged side by side; on the cover plate 11, on both sides of the explosion vent tube 13 are the positive pole 12 and the negative pole 14 of the battery body 15, respectively. Preferably, an external thread 132 is provided on the outside of the top of the detonation pipe 13 , and the detachable connection between the detonation pipe 13 and other pipes can be facilitated through the external thread 132 .
如图3所示,在泄爆管13的顶部外侧设置有连接盘133,通过连接盘133可以方便泄爆管13与其他管道进行焊接。优选的,泄爆膜19为圆盘状结构,在泄爆膜19的边缘设置有凸台,泄爆膜19通过凸台泄爆口18的侧壁焊接、固定。As shown in FIG. 3 , a connection plate 133 is provided on the top outside of the detonation pipe 13 , and the connection plate 133 can facilitate the welding of the detonation pipe 13 and other pipes. Preferably, the explosion-venting membrane 19 has a disc-shaped structure, and a boss is arranged on the edge of the explosion-venting membrane 19 , and the explosion-venting membrane 19 is welded and fixed by the side wall of the explosion-venting opening 18 of the boss.
实施例2Example 2
如图1至图7所示,本实施例提供的带有泄爆装置的电池包括泄爆管13、电池本体15以及设置在电池本体15上方的盖板11,在盖板11上设置有泄爆口18,在泄爆管13的底部设置有向外凸起的连接盘133,泄爆管13通过连接盘133与盖板11呈分体式连接,在泄爆口18内设置有凸台131,泄爆膜19通过凸台131与盖板11焊接,且泄爆膜19沿泄爆口18的径向设置,泄爆管13通过泄爆膜19与电池本体15的电解液腔连通;在盖板11上设置有注液孔110,注液孔110与泄爆口18并列设置;在盖板11上泄爆管13的两侧分别是电池本体15的正极柱12和负极柱14。优选的,泄爆管13通过连接盘133与盖板11焊接,且泄爆管13设置在泄爆口18对应位置的上方。As shown in Figures 1 to 7, the battery with explosion venting device provided in this embodiment includes an explosion venting tube 13, a battery body 15, and a cover plate 11 arranged above the battery body 15, and a venting device is arranged on the cover plate 11. The explosion vent 18 is provided with an outwardly protruding connection plate 133 at the bottom of the explosion vent 13, and the explosion vent 13 is connected to the cover plate 11 in a split form through the connection plate 133, and a boss 131 is arranged in the explosion vent 18 , the explosion venting film 19 is welded with the cover plate 11 through the boss 131, and the explosion venting film 19 is arranged radially along the explosion venting port 18, and the explosion venting tube 13 communicates with the electrolyte chamber of the battery body 15 through the explosion venting film 19; The cover plate 11 is provided with a liquid injection hole 110, and the liquid injection hole 110 is arranged side by side with the explosion vent 18; on the cover plate 11, the positive pole 12 and the negative pole 14 of the battery body 15 are located on both sides of the explosion vent 13. Preferably, the explosion venting tube 13 is welded to the cover plate 11 through the connection plate 133 , and the explosion venting tube 13 is arranged above the corresponding position of the explosion venting port 18 .
如图5所示,本实施例在泄爆管13的管腔内设置有凸台131,泄爆膜19通过 凸台131与泄爆管13固定连接,泄爆膜19设置在泄爆管13的顶部、中部或底部。进一步优选的,泄爆膜19设置在泄爆管13的顶部,泄爆膜19与凸台131焊接。上述泄爆膜19与凸台131除了焊接之外还可以选择胶黏接,或其他可以实现的固定连接方式。As shown in Figure 5, in this embodiment, a boss 131 is provided in the lumen of the explosion venting tube 13, and the explosion venting membrane 19 is fixedly connected with the explosion venting tube 13 through the boss 131, and the explosion venting membrane 19 is arranged on the explosion venting tube 13. top, middle or bottom. Further preferably, the explosion-venting membrane 19 is arranged on the top of the explosion-venting pipe 13 , and the explosion-venting membrane 19 is welded to the boss 131 . In addition to welding, the explosion-venting membrane 19 and the boss 131 can also be glued together, or other fixed connection methods that can be realized.
实施例3Example 3
如图7所示,本实施例提供的带有泄爆装置的电池模组包括电池模组本体,所述电池模组本体包括5组实施例1或实施例2的带有泄爆装置的电池,5组带有泄爆装置的电池并列设置,汇流支管161的数量与泄爆管13的数量相同,每个带有泄爆装置的电池上的电池本体15的盖板11上设置有汇流管16,汇流管16的一端部通过泄爆管13与电池本体15的电解液腔连通,汇流管16的另一端部穿过电池模组本体延伸至电池模组本体的外侧。As shown in Figure 7, the battery module with an explosion venting device provided in this embodiment includes a battery module body, and the battery module body includes five groups of batteries with an explosion venting device in Embodiment 1 or Embodiment 2 , 5 groups of batteries with explosion venting devices are arranged side by side, the number of confluence branch pipes 161 is the same as the number of explosion venting pipes 13, and the cover plate 11 of the battery body 15 on each battery with explosion venting devices is provided with a confluence pipe 16. One end of the manifold 16 communicates with the electrolyte cavity of the battery body 15 through the explosion vent 13, and the other end of the manifold 16 extends through the battery module body to the outside of the battery module body.
实施例4Example 4
如图6所示,本实施例提供的带有泄爆装置的电池模组在实施例3的基础上,汇流管16包括汇流总管和汇流支管161,每个带有泄爆装置的电池上的泄爆管13对应与一个汇流支管161连通,汇流支管161穿过电池模组本体与设置在电池模组本体外侧的汇流总管连通。通过泄爆管13能够满足在电池模组本体内电池本体15有多组时方便汇流支管161的排布;通过汇流总管能够方便可燃混合气的统一收集。优选的,在泄爆管13的顶部设置有外接螺纹或连接盘133,泄爆管13可通过外接螺纹与汇流支管161螺纹连接;或泄爆管13可通过连接盘133与汇流支管161焊接。As shown in Figure 6, the battery module with explosion venting device provided in this embodiment is on the basis of Embodiment 3, the confluence pipe 16 includes a confluence main pipe and a confluence branch pipe 161, each battery with an explosion venting device The detonation pipe 13 communicates with a confluence branch pipe 161 correspondingly, and the confluence branch pipe 161 passes through the battery module body and communicates with a confluence main pipe arranged outside the battery module body. The explosion venting tube 13 can meet the convenience of arrangement of the confluence branch pipe 161 when there are multiple battery bodies 15 in the battery module body; the confluence main pipe can facilitate the unified collection of combustible gas mixture. Preferably, an external thread or connecting plate 133 is provided on the top of the detonation pipe 13, and the detonation pipe 13 can be threadedly connected with the confluence branch pipe 161 through the external thread; or the detonation pipe 13 can be welded with the confluence branch pipe 161 through the connection plate 133.
实施例5Example 5
本实施例提供的带有泄爆装置的电池模组在实施例4的基础上,汇流支管161通过对接接头162与泄爆管13连通;具体地,对接接头162与汇流支管161连 接,在对接接头162的底端设置有内螺纹,对接接头162与泄爆管13螺纹连接。优选的,本实施例的对接接头162与泄爆管13的连接方式可以是其他的可拆卸的或不可拆卸的连接方式。本实施例在对接接头162与泄爆管13的连接处设置有密封圈。In the battery module with an explosion relief device provided in this embodiment, on the basis of Embodiment 4, the confluence branch pipe 161 communicates with the explosion relief pipe 13 through a butt joint 162; specifically, the butt joint 162 is connected to the confluence branch pipe 161, The bottom end of the joint 162 is provided with an internal thread, and the butt joint 162 is threadedly connected with the detonation pipe 13 . Preferably, the connection mode between the butt joint 162 and the detonation pipe 13 in this embodiment may be other detachable or non-detachable connection modes. In this embodiment, a sealing ring is provided at the joint between the butt joint 162 and the detonation pipe 13 .
实施例6Example 6
如图8所示,本实施例提供的带有泄爆装置的电池模组在实施例5的基础上,还包括气体处理装置,汇流总管的一端部与气体处理装置17连通;汇流总管的另一端部密封件163密封。通过气体处理装置17可以对可燃混合气进行集中收集后统一处理。优选的,密封件163可以是堵帽或密封片,堵帽或密封片与汇流总管焊接。优选的,本实施例的汇流总管的两端部均可以连接气体处理装置17。As shown in Figure 8, on the basis of Embodiment 5, the battery module with explosion venting device provided in this embodiment also includes a gas processing device, one end of the confluence main pipe communicates with the gas processing device 17; the other end of the confluence main pipe An end seal 163 seals. The combustible gas mixture can be centrally collected and treated uniformly by the gas processing device 17 . Preferably, the sealing member 163 may be a blocking cap or a sealing sheet, and the blocking cap or sealing sheet is welded to the manifold. Preferably, both ends of the manifold in this embodiment can be connected to the gas treatment device 17 .
实施例7Example 7
如图9所示,本实施例提供的带有泄爆装置的电池模组在实施例6的基础上进行进一步优化,气体处理装置17为箱体结构,在气体处理装置17上设置有上层吸附腔和下层降温腔,在上层吸附腔和下层降温腔之间设置有隔板173,通过隔板173将上层吸附腔和下层降温腔分隔开,隔板173是透气板,在上层吸附腔内设置有气体吸附件,在下层降温腔内设置有冷却液174,汇流总管与下层降温腔连通并延伸至冷却液174的液面以下。优选的,本实施例的冷却液174可以是冷却水或冷却油。As shown in Figure 9, the battery module with explosion venting device provided in this embodiment is further optimized on the basis of Embodiment 6. The gas processing device 17 is a box structure, and the gas processing device 17 is provided with an upper layer of adsorption chamber and the lower cooling chamber, a partition 173 is arranged between the upper adsorption chamber and the lower cooling chamber, and the upper adsorption chamber and the lower cooling chamber are separated by the partition 173. The partition 173 is a gas-permeable plate. A gas adsorption piece is provided, and a cooling liquid 174 is provided in the lower cooling chamber. Preferably, the cooling liquid 174 in this embodiment may be cooling water or cooling oil.
优选的,本实施例在下层降温腔的腔壁上设置有通气管176,汇流总管与通气管176连通,通气管176延伸至冷却液174的液面以下20㎝处;能够方便可燃混合气的快速冷却,冷却后的可燃混合气吸附效果更好。优选的,隔板173为不锈钢或塑料材质的多孔板。优选的,本实施的隔板173上方设置有防水透气膜。Preferably, in this embodiment, a vent pipe 176 is provided on the wall of the lower cooling chamber, the confluence main pipe communicates with the vent pipe 176, and the vent pipe 176 extends to 20 cm below the liquid level of the cooling liquid 174; Fast cooling, the adsorption effect of the cooled combustible mixture is better. Preferably, the separator 173 is a porous plate made of stainless steel or plastic. Preferably, a waterproof and gas-permeable membrane is arranged above the separator 173 in this embodiment.
实施例8Example 8
本实施例提供的带有泄爆装置的电池模组在实施例7的基础上,其气体吸附件包括过滤棉172和吸附层171,过滤棉172和吸附层171自下而上依次设置在防水透气膜的上方。优选的,吸附层171的材质可以是活性炭、分子筛、吸附树脂、石墨中的一种或多种,对经降温的可燃混合气进行吸附。The battery module with explosion venting device provided in this embodiment is based on Embodiment 7, and its gas adsorbent includes a filter cotton 172 and an adsorption layer 171, and the filter cotton 172 and the adsorption layer 171 are sequentially arranged on the waterproof above the breathable membrane. Preferably, the material of the adsorption layer 171 may be one or more of activated carbon, molecular sieve, adsorption resin, and graphite, to adsorb the cooled combustible gas mixture.
此外,上述气体处理装置17还包括排气管175,排气管175设置在上层吸附腔的顶部并与上层吸附腔连通;吸附完可燃气体的混合气通过排气管175排放。In addition, the above-mentioned gas treatment device 17 also includes an exhaust pipe 175, which is arranged on the top of the upper adsorption chamber and communicates with the upper adsorption chamber;
本实施例带有泄爆装置的电池模组使用过程为:在箱体结构内的某一个或某几个电池本体15发生热失控致使电解液发生反应产生可燃混合气体时,可燃混合气体可经过泄爆管13、汇流支管161、汇流总管以及通气管176集中收集在气体处理装置17的下层降温腔内,通过下层降温腔内的冷却液进行降温,降温后的可燃混合气体从冷却液中析出,穿过隔板173和防水透气膜在过滤棉172上过滤掉颗粒分子,进入吸附层171吸附掉可燃混合气中的可燃气体成分,吸附完可燃气体的混合气从排气管175排出。The use process of the battery module with explosion venting device in this embodiment is as follows: when one or several battery bodies 15 in the box structure have thermal runaway and the electrolyte reacts to generate flammable mixed gas, the flammable mixed gas can pass through Explosion venting pipe 13, confluence branch pipe 161, confluence main pipe and ventilation pipe 176 are collectively collected in the lower cooling chamber of the gas treatment device 17, and the temperature is lowered through the cooling liquid in the lower cooling chamber, and the cooled flammable mixed gas is precipitated from the cooling liquid , pass through the partition 173 and the waterproof breathable membrane to filter out particle molecules on the filter cotton 172, enter the adsorption layer 171 to absorb the combustible gas components in the combustible gas mixture, and the combustible gas mixed gas is discharged from the exhaust pipe 175.
本申请中电池本体15的数量可以根据工作物的电池容量要求具体设定,可以是2个、3个、4个、5个、6个、7个、8个、9个甚至更多,多个电池本体15的排布方式是现有常规的排布方式;凸起31距泄爆管13的出口的距离可以是1㎜、2㎜、3㎜、4㎜以及5㎜,只要不大于5㎜即可;通气管176可以延伸至冷却液174的液面以下不少于20㎝处,其可以是20㎝、25㎝处、30㎝处等。The number of battery bodies 15 in the present application can be specifically set according to the battery capacity requirements of the work object, and can be 2, 3, 4, 5, 6, 7, 8, 9 or even more. The arrangement of each battery body 15 is an existing conventional arrangement; the distance between the protrusion 31 and the outlet of the detonation pipe 13 can be 1mm, 2mm, 3mm, 4mm and 5mm, as long as it is not greater than 5mm The vent pipe 176 can be extended to not less than 20cm below the liquid level of the cooling liquid 174, which can be 20cm, 25cm, 30cm, etc.
实施例9Example 9
如图10和图11所示,本实施例提供的具有泄爆通道的电池箱包括电池腔21、吸附腔23和气体收集管路29,在电池腔21内设置有电池模组,电池模组包括多个带有泄爆装置的电池,电池模组的电解液腔通过气体收集管路29与吸附腔23连通。本实施例的具有泄爆通道的电池箱为长方体结构。As shown in Figure 10 and Figure 11, the battery box with explosion venting channel provided by this embodiment includes a battery cavity 21, an adsorption cavity 23 and a gas collection pipeline 29, and a battery module is arranged in the battery cavity 21, and the battery module It includes a plurality of batteries with explosion relief devices, and the electrolyte chamber of the battery module communicates with the adsorption chamber 23 through the gas collection pipeline 29 . The battery box with the explosion venting channel in this embodiment has a rectangular parallelepiped structure.
如图12所示,本实施例的电池模组包括12组电池28,该电池可为实施1或实施例2中的电池,12组电池28分为两列设置,每列有6组电池28,每列中的电池 28并列堆叠设置,两列电池28相对设置,在每个电池28上设置有泄爆口,气体收集管路29与每个电池28上的泄爆口连通。该泄爆口可与电池28一体设置,也可与电池28分体设置。As shown in Figure 12, the battery module of this embodiment includes 12 groups of batteries 28, which can be the batteries in Embodiment 1 or Embodiment 2, and the 12 groups of batteries 28 are divided into two rows, and each row has 6 groups of batteries 28 , the batteries 28 in each row are stacked side by side, the batteries 28 in two rows are arranged oppositely, each battery 28 is provided with an explosion vent, and the gas collection pipeline 29 communicates with the explosion vent on each battery 28 . The explosion vent can be set integrally with the battery 28, or can be set separately from the battery 28.
本实施例中的电池28中的数量可以是1组、2组、3组、4组、5组、6组、7组、8组,甚至更多组,其具体数量根据电池容量要求进行匹配。The number of batteries 28 in this embodiment can be 1 group, 2 groups, 3 groups, 4 groups, 5 groups, 6 groups, 7 groups, 8 groups, or even more groups, and its specific number is matched according to the battery capacity requirements .
如图16和图17所示,本实施例的气体收集管路29包括支管291和立管292,每个电池28对应一个支管291,且支管291与对应电池28上的泄爆口的位置对应,支管291的一端部通过泄爆口与电池28的电解液腔连通,支管291的另一端部与立管292连通,立管292与吸附腔23连通。本实施例的立管292有两根,每列的6组电池28共用一个立管292。As shown in Figures 16 and 17, the gas collection pipeline 29 of this embodiment includes a branch pipe 291 and a standpipe 292, each battery 28 corresponds to a branch pipe 291, and the branch pipe 291 corresponds to the position of the explosion vent on the corresponding battery 28 One end of the branch pipe 291 communicates with the electrolyte chamber of the battery 28 through the explosion vent, the other end of the branch pipe 291 communicates with the standpipe 292 , and the standpipe 292 communicates with the adsorption chamber 23 . There are two standpipes 292 in this embodiment, and the 6 sets of batteries 28 in each row share one standpipe 292 .
如图14所示,本实施例的电池腔21包括内腔211以及设置在内腔外侧的外腔212,外腔212设置在内腔211的侧部外侧,不包括底部外侧和顶部外侧,电池模组置于内腔211中,外腔212中填充有导热材料。本实施例中的导热材料可以是导热油、松香、导热硅胶和石墨中的一种或两种及两种以上的组合。As shown in FIG. 14, the battery cavity 21 of this embodiment includes an inner cavity 211 and an outer cavity 212 arranged outside the inner cavity. The outer cavity 212 is arranged outside the side of the inner cavity 211, excluding the bottom outside and the top outside. The battery The module is placed in the inner cavity 211 , and the outer cavity 212 is filled with heat-conducting material. The heat conduction material in this embodiment may be one or a combination of two or more of heat conduction oil, rosin, heat conduction silica gel and graphite.
如图14所示,本实施例中电池腔内设置有散热翘片213,散热翘片213的一端置于内腔211中,散热翘片213的另一端置于外腔,通过散热翘片213将内腔中电池产生的热量传导至外腔212内,再通过外腔212内的导热材料将热量传导至外腔的腔壁上,通过外腔的腔壁与空气对流将热量散发掉。As shown in Figure 14, in this embodiment, a heat dissipation fin 213 is provided in the battery cavity, one end of the heat dissipation fin 213 is placed in the inner cavity 211, and the other end of the heat dissipation fin 213 is placed in the outer cavity, through which the heat dissipation fin 213 The heat generated by the battery in the inner cavity is conducted to the outer cavity 212, and then the heat is conducted to the wall of the outer cavity through the heat-conducting material in the outer cavity 212, and the heat is dissipated through the convection between the wall of the outer cavity and the air.
本实施例具有泄爆通道的电池箱在电池腔21和吸附腔23之间设置有电气腔22,立管292贯穿电气腔22与吸附腔23连通;在电气腔22相对的两侧壁或四个侧壁上都设置有通风孔221,通过通风孔221将电气腔22内电线或电气控制元件等产生的热量散发掉。本实施例的电池腔21、电气腔22以及吸附腔23自下而上依次设置。In this embodiment, the battery box with an explosion venting channel is provided with an electrical cavity 22 between the battery cavity 21 and the adsorption cavity 23, and the standpipe 292 runs through the electrical cavity 22 and communicates with the adsorption cavity 23; Ventilation holes 221 are all arranged on each side wall, and the heat generated by the electric wires or electrical control elements in the electrical cavity 22 is dissipated through the ventilation holes 221 . The battery cavity 21 , the electrical cavity 22 and the adsorption cavity 23 in this embodiment are arranged in sequence from bottom to top.
本实施例在吸附腔23内设置有固体吸附材料。固体吸附材料是活性炭、石墨、吸附树脂、二氧化硅、多孔玻璃、氧化镁等中的一种或两种及两种以上的组合。In this embodiment, a solid adsorption material is arranged in the adsorption cavity 23 . The solid adsorption material is one or a combination of two or more of activated carbon, graphite, adsorption resin, silicon dioxide, porous glass, magnesium oxide, etc.
如图18和图19所示,本实施例的电池腔21与电气腔22之间设置有下隔板26,电气腔22与吸附腔23之间设置有上隔板25,在下隔板26和上隔板25上均设置有两个过孔262,每个过孔262对应一根立管292,立管292依次贯穿下隔板26上的过孔262和上隔板6上的过孔262与吸附腔23连通,上隔板25延伸至电气腔22的腔壁并与电气腔22的腔壁紧密贴合连接。As shown in Figures 18 and 19, a lower partition 26 is provided between the battery chamber 21 and the electrical chamber 22 of this embodiment, an upper partition 25 is provided between the electrical chamber 22 and the adsorption chamber 23, and the lower partition 26 and Two via holes 262 are provided on the upper partition 25, and each via hole 262 corresponds to a standpipe 292. The adsorption cavity 23 is connected, and the upper partition 25 extends to the cavity wall of the electrical cavity 22 and is closely connected with the cavity wall of the electrical cavity 22 .
本实施例在上隔板25的过孔与立管292的连接处设置有弹性密封垫,在下隔板26的过孔与立管292的连接处设置有弹性密封垫。该弹性密封垫为弹性橡胶或塑料垫圈或其他能够其密封作用的机构件。In this embodiment, an elastic gasket is provided at the connection between the through hole of the upper partition 25 and the standpipe 292 , and an elastic gasket is provided at the connection between the through hole of the lower partition 26 and the standpipe 292 . The elastic sealing gasket is an elastic rubber or plastic gasket or other mechanical components capable of sealing.
本实施例在下隔板26的底部设置有向下延伸的环形凸台261,内腔211的顶部开口,环形凸台1卡在内腔1的顶部开口处并延伸至顶部开口的下方将内腔211密封;下隔板26的边缘延伸至外腔212的腔壁处并与外腔212的腔壁紧密贴合,将外腔212密封。In this embodiment, a downwardly extending annular boss 261 is provided at the bottom of the lower partition 26, and the top opening of the inner cavity 211, the annular boss 1 is clamped at the top opening of the inner cavity 1 and extends to the bottom of the top opening to close the inner cavity. 211 is sealed; the edge of the lower partition 26 extends to the cavity wall of the outer cavity 212 and closely fits with the cavity wall of the outer cavity 212 to seal the outer cavity 212 .
如图13所示,本实施例的在吸附腔23内设置有透气管242,透气管242有两根,两根透气管242并列设置并沿着吸附腔23内的高度方向设置,透气管242的底部与上隔板25的上端面连接,透气管242的顶部延伸至吸附腔23的顶部,立管292贯穿上隔板25后置于透气管242的管腔中,每根立管292对应一根立管292,在透气管242上设置有透气网孔,立管292延伸至透气管242的管腔中并通过透气网孔与吸附腔23连通;从立管292排出的可燃混合气体在透气管242内聚集,并穿过透气管242上的透气网孔弥散在固体吸附材料内,对可燃混合气体中的可燃气成分进行吸附。As shown in Figure 13, in the present embodiment, a vent pipe 242 is provided in the adsorption chamber 23, and there are two vent pipes 242, and the two vent pipes 242 are arranged side by side and arranged along the height direction in the adsorption chamber 23. The bottom of the bottom is connected with the upper surface of the upper partition 25, the top of the vent pipe 242 extends to the top of the adsorption chamber 23, and the vertical pipe 292 runs through the upper partition 25 and is placed in the lumen of the vent pipe 242. Each vertical pipe 292 corresponds to a Root standpipe 292 is provided with ventilating mesh on ventilating pipe 242, and standpipe 292 extends in the lumen of ventilating pipe 242 and is communicated with adsorption chamber 23 by ventilating mesh; 242, and pass through the ventilation mesh on the ventilation pipe 242 to disperse in the solid adsorption material to adsorb the combustible gas components in the combustible gas mixture.
本实施例的吸附腔23的顶部开口,在吸附腔23的顶部开口处设置有吸附腔上盖板24,在吸附腔上盖板24上设置有与吸附腔23连通的排气管241。The top opening of the adsorption chamber 23 in this embodiment is provided with an adsorption chamber upper cover 24 at the top opening of the adsorption chamber 23 , and an exhaust pipe 241 communicating with the adsorption chamber 23 is arranged on the adsorption chamber upper cover 24 .
如图15和图17所示,在本实施例的内腔211中设置有电池支架27,在电池支架27上设置有12个电池放置仓,12个电池放置仓分成两列,两列电池放置仓之间通过分隔板分割开,每个电池放置仓内对应放置一个电池。需要说明的是,电池支架27上的电池放置仓的数量是与电池的数量一一对应的。As shown in Figures 15 and 17, a battery holder 27 is provided in the inner cavity 211 of this embodiment, and 12 battery storage compartments are arranged on the battery support 27, and the 12 battery storage compartments are divided into two rows, and the batteries are placed in two rows. The compartments are separated by partitions, and one battery is placed in each battery compartment. It should be noted that the number of battery storage compartments on the battery holder 27 is in one-to-one correspondence with the number of batteries.
本实施例的电池放置仓可以是活动式的,例如像抽屉式的抽拉活动室;也可以是规定是,向固定的方格子式。本实施例的具有泄爆通道的电池箱可以是1个、2个、3个、4个、5个、6个,甚至更多个,彼此之间并列设置,每个具有泄爆通道的电池箱上的吸附腔23通过排气管241与汇集管连通。The battery storage compartment in this embodiment can be movable, such as a drawer-type pull-out activity room; it can also be defined as a fixed square grid. The battery box with the explosion venting channel of the present embodiment can be 1, 2, 3, 4, 5, 6, or even more, arranged side by side with each other, each battery box with the explosion venting channel The adsorption chamber 23 on the box communicates with the collection pipe through the exhaust pipe 241 .
本实施例的汇集管与气体收集装置连通,气体收集装置可以是收集罐、收集箱或其他气体封闭的容器。The collecting pipe in this embodiment communicates with the gas collection device, which may be a collection tank, a collection box or other gas-enclosed containers.
本申请的具有泄爆通道的电池箱,在其中某一个电池发生热失控时,将电池内聚集的气体中的易燃物质和助燃物质限制在气体收集管道29,并通过气体收集管道29收集至吸附腔,能避免火焰直接接触其它电池,避免了热量快速扩散,能够有效减缓热失控的剧烈程度,也避免了其它电池单元被引燃产生连锁反应,同时可燃气体通过气体收集管道进入吸附腔进行吸附处理,除去可燃成分后可安全排放,符合环保理念。The battery box with explosion venting passage of the present application, when thermal runaway occurs in one of the batteries, the flammable substances and combustion-supporting substances in the gas accumulated in the battery are limited to the gas collection pipe 29, and are collected through the gas collection pipe 29 to The adsorption chamber can prevent the flame from directly contacting other batteries, avoiding the rapid diffusion of heat, effectively slowing down the intensity of thermal runaway, and avoiding the chain reaction of other battery units being ignited. Adsorption treatment can be safely discharged after removing combustible components, which is in line with the concept of environmental protection.
Claims (25)
- 一种带有泄爆装置的电池,其特征在于,包括盖板和泄爆管,所述盖板上设置有泄爆口,所述泄爆管与泄爆口连通,所述泄爆口内沿径向设置有泄爆膜,或者,所述泄爆管内沿径向设置有泄爆膜。A battery with an explosion venting device, characterized in that it includes a cover plate and an explosion venting tube, the cover plate is provided with an explosion venting port, the explosion venting tube communicates with the explosion venting port, and the inner edge of the explosion venting port An explosion-venting membrane is arranged in the radial direction, or, an explosion-venting membrane is arranged in the radial direction in the explosion-venting pipe.
- 根据权利要求1所述的带有泄爆装置的电池,其特征在于,所述泄爆管内设置有凸台,所述泄爆管通过凸台与泄爆膜固定连接;或者,所述泄爆膜上设置有凸台,所述泄爆膜通过凸台与泄爆口固定连接。The battery with an explosion-venting device according to claim 1, wherein a boss is arranged in the explosion-venting tube, and the explosion-venting tube is fixedly connected to the explosion-venting membrane through the boss; or, the explosion-venting tube A boss is arranged on the membrane, and the explosion venting membrane is fixedly connected with the explosion vent through the boss.
- 根据权利要求2所述的带有泄爆装置的电池,其特征在于,所述盖板与泄爆管一体式连接;或者,所述泄爆管的底部设置有向外凸起的连接盘,所述泄爆管通过连接盘与盖板呈分体式连接。The battery with an explosion venting device according to claim 2, wherein the cover plate is integrally connected with the explosion venting tube; or, the bottom of the explosion venting tube is provided with an outwardly protruding connection plate, The explosion-venting pipe is connected to the cover plate in split form through the connection plate.
- 根据权利要求3所述的带有泄爆装置的电池,其特征在于,所述泄爆管的顶部设置有向外凸起的连接盘。The battery with explosion venting device according to claim 3, characterized in that, the top of the explosion venting tube is provided with an outwardly protruding connecting plate.
- 一种带有泄爆装置的电池模组,其特征在于,包括电池模组本体,所述电池模组本体包括汇流管以及多个权利要求1至4任一项所述的带有泄爆装置的电池,多个带有泄爆装置的电池的电解液腔均通过泄爆管与汇流管连通,所述汇流管穿过电池模组本体延伸至电池模组本体外侧。A battery module with an explosion venting device, characterized in that it includes a battery module body, the battery module body includes a manifold and a plurality of explosion venting devices with an explosion venting device according to any one of claims 1 to 4 The electrolyte chambers of multiple batteries with explosion-venting devices communicate with the confluence pipe through the explosion-venting pipe, and the confluence pipe passes through the battery module body and extends to the outside of the battery module body.
- 根据权利要求5所述的带有泄爆装置的电池模组,其特征在于,所述汇流管包括汇流总管和汇流支管,每个泄爆管对应与一个汇流支管连通,所述汇流支管穿过电池模组本体与设置在电池模组本体外侧的汇流总管连通。The battery module with an explosion relief device according to claim 5, wherein the confluence pipe includes a confluence main pipe and a confluence branch pipe, each explosion venting pipe communicates with a confluence branch pipe, and the confluence branch pipe passes through The battery module body communicates with the bus manifold arranged outside the battery module body.
- 根据权利要求6所述的带有泄爆装置的电池模组,其特征在于,所述汇流支管通过对接接头与泄爆管连通。The battery module with an explosion venting device according to claim 6, wherein the confluence branch communicates with the explosion venting pipe through a butt joint.
- 根据权利要求7所述的带有泄爆装置的电池模组,其特征在于,所述带有泄爆装置的电池模组还包括与汇流总管连通的气体处理装置。The battery module with explosion venting device according to claim 7, characterized in that, the battery module with explosion venting device further comprises a gas treatment device communicated with the confluence main pipe.
- 根据权利要求8所述的带有泄爆装置的电池模组,其特征在于,所述气体处理装置包括上层吸附腔和下层降温腔,所述上层吸附腔和下层降温腔通过 隔板分隔,所述隔板为透气板,所述汇流总管与下层降温腔连通。The battery module with an explosion venting device according to claim 8, wherein the gas treatment device comprises an upper adsorption chamber and a lower cooling chamber, the upper adsorption chamber and the lower cooling chamber are separated by a partition, so The partition is a breathable plate, and the confluence main pipe communicates with the cooling chamber of the lower layer.
- 根据权利要求9所述的带有泄爆装置的电池模组,其特征在于,所述上层吸附腔内设置有气体吸附件,所述下层降温腔内设置有冷却液;所述上层吸附腔与排气管连通。The battery module with an explosion venting device according to claim 9, wherein a gas adsorbent is arranged in the upper layer of the adsorption chamber, and a cooling liquid is arranged in the lower layer of the cooling chamber; the upper layer of the adsorption chamber and the The exhaust pipe is connected.
- 一种具有泄爆通道的电池箱,其特征在于,包括电池腔、吸附腔和气体收集管路,所述电池腔内设置有电池模组,所述电池模组通过气体收集管路与吸附腔连通,所述电池模组包括多个权利要求1至4任一所述的带有泄爆装置的电池。A battery box with an explosion venting channel, characterized in that it includes a battery chamber, an adsorption chamber and a gas collection pipeline, the battery chamber is provided with a battery module, and the battery module is connected to the adsorption chamber through the gas collection pipeline. Connected, the battery module includes a plurality of batteries with an explosion-proof device according to any one of claims 1 to 4.
- 根据权利要求11所述的具有泄爆通道的电池箱,其特征在于,多个带有泄爆装置的电池并列设置,所述气体收集管路与电池上的泄爆口连通。The battery box with explosion venting passages according to claim 11, characterized in that a plurality of batteries with explosion venting devices are arranged side by side, and the gas collection pipeline communicates with the explosion venting ports on the batteries.
- 根据权利要求12所述的具有泄爆通道的电池箱,其特征在于,所述气体收集管路包括支管和立管,每个电池对应一个支管,所述立管通过支管与电池上的泄爆口连通,所述立管与吸附腔连通。The battery box with an explosion venting channel according to claim 12, wherein the gas collection pipeline includes a branch pipe and a standpipe, each battery corresponds to a branch pipe, and the standpipe connects with the explosion vent on the battery through the branch pipe. The mouth is connected, and the standpipe is connected with the adsorption chamber.
- 根据权利要求13所述的具有泄爆通道的电池箱,其特征在于,所述电池腔包括内腔以及设置在内腔外侧的外腔,所述电池模组置于内腔中,所述外腔中填充有导热材料,所述导热材料为导热油、松香、导热硅胶和石墨中的一种或多种。The battery box with an explosion venting passage according to claim 13, wherein the battery chamber includes an inner chamber and an outer chamber arranged outside the inner chamber, the battery module is placed in the inner chamber, and the outer chamber The cavity is filled with heat conduction material, and the heat conduction material is one or more of heat conduction oil, rosin, heat conduction silica gel and graphite.
- 根据权利要求14所述的具有泄爆通道的电池箱,其特征在于,所述电池腔内设置有散热翘片,所述散热翘片的一端置于内腔中,所述散热翘片的另一端置于外腔中。The battery box with an explosion venting channel according to claim 14, wherein a heat dissipation fin is arranged in the battery cavity, one end of the heat dissipation fin is placed in the inner cavity, and the other end of the heat dissipation fin is placed in the inner cavity. One end is placed in the outer cavity.
- 根据权利要求15所述的具有泄爆通道的电池箱,其特征在于,还包括设置在电池腔和吸附腔之间的电气腔,所述立管贯穿电气腔与吸附腔连通。The battery box with an explosion-venting passage according to claim 15, further comprising an electrical cavity arranged between the battery cavity and the adsorption cavity, and the standpipe passes through the electrical cavity and communicates with the adsorption cavity.
- 根据权利要求16所述的具有泄爆通道的电池箱,其特征在于,所述吸附腔内设置有固体吸附材料,所述固体吸附材料为活性炭、石墨、吸附树脂、二氧化硅、多孔玻璃、氧化镁中的一种或多种。The battery box with an explosion venting channel according to claim 16, wherein a solid adsorption material is arranged in the adsorption cavity, and the solid adsorption material is activated carbon, graphite, adsorption resin, silicon dioxide, porous glass, One or more of magnesium oxide.
- 根据权利要求17所述的具有泄爆通道的电池箱,其特征在于,所述电 池腔与电气腔之间设置有下隔板,所述电气腔与吸附腔之间设置有上隔板,所述下隔板和上隔板上均设置有过孔,所述立管依次贯穿下隔板上的过孔和上隔板上的过孔与吸附腔连通,所述下隔板的过孔与立管的连接处以及上隔板的过孔与立管的连接处均设置有密封垫圈。The battery box with an explosion venting channel according to claim 17, wherein a lower partition is provided between the battery chamber and the electrical chamber, and an upper partition is provided between the electrical chamber and the adsorption chamber, so that Both the lower partition and the upper partition are provided with via holes, and the riser runs through the via holes on the lower partition and the via holes on the upper partition in turn to communicate with the adsorption chamber. Sealing gaskets are provided at the junction of the standpipe and the junction of the through hole of the upper partition and the standpipe.
- 根据权利要求18所述的具有泄爆通道的电池箱,其特征在于,所述下隔板的底部设置有向下延伸的环形凸台,所述内腔的顶部开口,所述环形凸台卡在内腔的顶部开口处并将内腔密封,且所述下隔板的边缘延伸至外腔的腔壁处并将外腔密封。The battery box with an explosion-venting passage according to claim 18, wherein the bottom of the lower partition is provided with an annular boss extending downward, the top of the inner cavity is open, and the annular boss engages The top opening of the inner cavity seals the inner cavity, and the edge of the lower partition extends to the cavity wall of the outer cavity and seals the outer cavity.
- 根据权利要求19所述的具有泄爆通道的电池箱,其特征在于,所述吸附腔内设置有透气管,所述透气管贯通吸附腔,所述透气管上设置有透气网孔,所述立管延伸至透气管的管腔中并通过透气网孔与吸附腔连通。The battery box with an explosion venting channel according to claim 19, wherein a ventilation pipe is arranged in the adsorption chamber, the ventilation pipe runs through the adsorption chamber, and a ventilation mesh is arranged on the ventilation pipe, and the The standpipe extends into the lumen of the ventilation pipe and communicates with the adsorption cavity through the ventilation mesh.
- 根据权利要求20所述的具有泄爆通道的电池箱,其特征在于,所述吸附腔的顶部开口,且所述吸附腔的顶部开口处设置有吸附腔上盖板,所述吸附腔上盖板上设置有与吸附腔连通的排气管。The battery box with an explosion venting channel according to claim 20, wherein the top of the adsorption chamber is open, and the top opening of the adsorption chamber is provided with an upper cover of the adsorption chamber, and the upper cover of the adsorption chamber is An exhaust pipe communicating with the adsorption chamber is arranged on the board.
- 根据权利要求21所述的具有泄爆通道的电池箱,其特征在于,所述电气腔的腔壁上设置有通风孔。The battery box with an explosion-venting passage according to claim 21, wherein ventilation holes are provided on the cavity wall of the electrical cavity.
- 根据权利要求22所述的具有泄爆通道的电池箱,其特征在于,所述内腔中设置有电池支架,所述电池支架上并列设置有多个电池放置仓,每个电池放置仓内对应放置一个电池。The battery box with an explosion venting channel according to claim 22, wherein a battery holder is arranged in the inner cavity, and a plurality of battery storage bins are arranged side by side on the battery holder, and each battery storage bin corresponds to Place a battery.
- 根据权利要求23所述的具有泄爆通道的电池箱,其特征在于,多个具有泄爆通道的电池箱并列设置,且多个具有泄爆通道的电池箱上的吸附腔均通过排气管与汇集管连通。The battery box with explosion venting channels according to claim 23, wherein a plurality of battery boxes with explosion venting channels are arranged side by side, and the adsorption chambers on the battery boxes with explosion venting channels all pass through exhaust pipes connected to the collection pipe.
- 根据权利要求24所述的具有泄爆通道的电池箱,其特征在于,所述汇集管与气体收集装置连通。The battery box with an explosion venting passage according to claim 24, wherein the collecting pipe communicates with the gas collecting device.
Applications Claiming Priority (4)
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CN202110962727.8A CN113764813A (en) | 2021-08-20 | 2021-08-20 | Battery box with independent explosion venting channel |
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 |
CN202110961206.0 | 2021-08-20 | ||
CN202110962727.8 | 2021-08-20 |
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WO2023020571A1 true WO2023020571A1 (en) | 2023-02-23 |
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