CN118564698A - Pressure relief explosion venting device for battery compartment - Google Patents
Pressure relief explosion venting device for battery compartment Download PDFInfo
- Publication number
- CN118564698A CN118564698A CN202410683618.6A CN202410683618A CN118564698A CN 118564698 A CN118564698 A CN 118564698A CN 202410683618 A CN202410683618 A CN 202410683618A CN 118564698 A CN118564698 A CN 118564698A
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- Prior art keywords
- pressure
- ring
- fixed
- battery compartment
- seat
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- 238000004880 explosion Methods 0.000 title claims abstract description 21
- 238000013022 venting Methods 0.000 title claims abstract description 17
- 230000002159 abnormal effect Effects 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims description 74
- 239000007789 gas Substances 0.000 claims description 34
- 239000012528 membrane Substances 0.000 claims description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 6
- 230000006378 damage Effects 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/14—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member
- F16K17/16—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a battery compartment pressure and explosion venting device, which comprises: the fixed flange seat, the passive pressure measuring component, the fixed valve seat and the movable valve ring which is rotationally arranged on the inner side of the fixed valve seat, the surface of the fixed valve seat is provided with a sliding ring groove, the movable valve ring is rotationally arranged on the inner side of the sliding ring groove, the surface of the fixed flange seat is provided with a plurality of pressure relief holes which are uniformly distributed in the circumferential direction, the passive pressure measuring component and the fixed valve seat are concentrically arranged and fixedly arranged on the inner side of the fixed flange seat, the surface of the fixed flange seat is provided with a pressure measuring groove, and the surface of the passive pressure measuring component is exposed through the surface of the pressure measuring groove. According to the invention, by arranging the double protection mechanisms, the two protection mechanisms of electric signal sensing and passive pressure relief are combined by utilizing the fixed valve seat and the movable valve ring, so that the safety of the battery compartment is improved, the electric signal sensing can monitor the internal air pressure and abnormal air of the battery in time, and the accurate control is realized; the passive pressure relief structure is used as a standby mechanism, and can be automatically started when the electric control system fails, so that the safety of the battery compartment is ensured.
Description
Technical Field
The invention relates to the technical field of battery safety, in particular to a battery compartment pressure and explosion venting device.
Background
The pressure relief and explosion venting of the battery compartment means that excessive gas is accumulated in the battery compartment, and the pressure of the gas is increased possibly due to the fault or abnormal condition of the battery, so that explosion or leakage is caused. This may cause serious safety accidents and personal injury, even fire or explosion. When the lithium battery explodes, the generated gas is usually generated by chemical reaction between electrolyte and electrode, the electrolyte is mainly mixture of organic solvent and lithium salt, electrochemical reaction exists between the anode and the cathode, and abnormal reaction can occur in the battery under abnormal conditions such as overcharge, external damage or overhigh temperature
In order to prevent potential safety hazards caused by pressure relief and explosion venting of the battery compartment, some measures can be taken: and a pressure release device is added in the battery compartment design, and when the gas pressure in the battery compartment exceeds a set value, the device can automatically release the pressure, so that the internal pressure is reduced, and the explosion risk is reduced. And (3) installing a gas detection system to monitor the gas concentration in the battery compartment, finding out abnormal gas accumulation conditions in time, and taking measures to eliminate hidden danger. And a temperature monitoring system is arranged to monitor the temperature change in the battery compartment, so that the abnormal temperature condition is found in time, and measures are taken to prevent explosion caused by overheating. The control operation is controlled by an electric control system through electric signals, the electric signals are monitored and formed by a sensor to carry out release instructions, and the battery cannot be powered in an abnormal state, so that quick emergency response cannot be carried out, and potential safety hazards exist.
In view of the above, the present invention provides a battery compartment pressure relief and explosion venting device for solving the existing problems, and aims to solve the problems and improve the practical value by the technology.
Disclosure of Invention
The present invention aims to solve one of the technical problems existing in the prior art or related technologies.
The technical scheme adopted by the invention is as follows: a battery compartment pressure relief explosion venting device, comprising: the device comprises a fixed flange seat, a passive pressure measuring component, a fixed valve seat and a movable valve ring rotatably arranged on the inner side of the fixed valve seat, wherein a sliding ring groove is formed in the surface of the fixed valve seat, the movable valve ring is rotatably arranged on the inner side of the sliding ring groove, a plurality of pressure relief holes which are uniformly distributed in the circumferential direction are formed in the surface of the fixed flange seat, the passive pressure measuring component and the fixed valve seat are concentrically arranged and fixedly arranged on the inner side of the fixed flange seat, a pressure measuring groove is formed in the surface of the fixed flange seat, the surface of the passive pressure measuring component is exposed through the surface of the pressure measuring groove, a plurality of first communication holes and second communication holes are formed in the surface of the fixed valve seat, the first communication holes and the second communication holes are alternately arranged in sequence and are in one-to-one correspondence with the pressure relief holes, a sensor group which is positioned on the inner side of a battery compartment is fixedly arranged on the surface of the passive pressure measuring component, and the sensor group is used for monitoring abnormal gas and air pressure intensity in the battery compartment.
The passive pressure measurement subassembly includes pressure stopping disc, pressure sensing membrane and pressure cabin, the top surface of pressure cabin and the bottom surface sealing connection of pressure sensing membrane, pressure sensing membrane and pressure cabin inboard are equipped with the cavity and are the malleation state in the cavity, pressure stopping disc includes a branch ring, resistance ring and a plurality of thick stick layering, a plurality of thick stick layering is circumferencial direction evenly distributed and embedding installs in the interior survey of pressure sensing membrane, pressure stopping disc is integrated into one piece structure, the bottom surface of resistance ring and the sealed butt of surface of deciding the disk seat.
The surface of the movable valve ring is provided with a valve hole and a communication slot hole which are respectively communicated with the first communication hole and the second communication hole, the valve hole is in a non-communicated state with the first communication hole under the non-deflection state of the movable valve ring, the first communication hole and the valve hole are in a communicated state after the movable valve ring is driven by the driving gear shaft to deflect, and the communication slot hole and the second communication hole are always kept in a communicated state.
The present invention may be further configured in a preferred example to: the fixed flange seat periphery is equipped with the constant head tank, drive tooth axle fixed mounting is in the constant head tank surface and output and the tooth's socket transmission engagement of moving valve ring surface, fixed flange seat surface periphery is equipped with the constant head tank, fixed valve seat surface is equipped with the ear seat that is fixed in the constant head tank inboard.
The present invention may be further configured in a preferred example to: the quantity of pressure release hole is twice of air vent quantity, and the quantity of pressure release hole equals the sum of first communication hole and second communication hole quantity, first communication hole and second communication hole quantity are the same, and a plurality of first communication holes and second communication hole are the alternate distribution in proper order, the quantity of valve opening equals the quantity of second communication hole.
The present invention may be further configured in a preferred example to: the periphery of the valve moving ring is fixedly provided with a sliding lug, the periphery of the fixed flange seat is provided with an arc guide groove, and the sliding lug is sleeved on the inner side of the arc guide groove in a sliding manner.
The present invention may be further configured in a preferred example to: the support ring is in an inclined ring shape, the support ring is used as a connecting fulcrum of the bar pressing strip and the blocking ring to be in contact with the surface of the fixed valve seat in an abutting mode, and the lever tilting blocking ring is separated from the surface of the fixed valve seat after the bar pressing strip is pressed.
The present invention may be further configured in a preferred example to: the pressure sensing membrane is of a high-temperature resistant rubber membrane structure, the pressure sensing membrane is formed by injection molding and is wrapped on the surface of each bar pressing strip, and the pressure sensing membrane and the bar pressing strips are combined to form a conical arched disc structure.
The present invention may be further configured in a preferred example to: the driving gear shaft is of a motor structure, the output end of the driving gear shaft is connected with a gear which is rotatably arranged in the fixed lug on the surface of the fixed valve seat, and central angles of the sliding lug and the tooth slot are both larger than central angles of a distance between the first communication hole and the valve hole.
The present invention may be further configured in a preferred example to: the sensor group comprises one of a gas pressure sensor, a gas concentration sensor and a hydrogen sensor or a carbon dioxide sensor.
The beneficial effects obtained by the invention are as follows:
1. According to the invention, by arranging the double protection mechanisms, the two protection mechanisms of electric signal sensing and passive pressure relief are combined by utilizing the fixed valve seat and the movable valve ring, so that the safety of the battery compartment is improved, the electric signal sensing can monitor the internal air pressure and abnormal air of the battery in time, and the accurate control is realized; the passive pressure relief structure is used as a standby mechanism, and can be automatically started when the electric control system fails, so that the safety of the battery compartment is ensured.
2. According to the invention, by utilizing the valve hole cooperation of the special fixed valve seat and the movable valve ring, multiple functions such as electric signal sensing, electric control releasing and passive pressure relief are integrated, the structure is simple and compact, the installation and maintenance are convenient, the space and labor cost are saved, the electric signal sensing system can monitor the air pressure and abnormal gas in the battery in real time, the releasing device can be immediately triggered once the abnormal condition is found, the response speed is high, the emergency can be effectively dealt with in time, and the possibility of accident occurrence is reduced.
3. According to the invention, a novel pressure stopping disc structure is adopted, the limiting of the abnormal pressure state in the battery compartment is carried out by setting the positive pressure in the pressure compartment, once the internal pressure of the battery compartment exceeds the internal pressure of the pressure compartment, the deformation movement of the pressure stopping disc can be pushed, and a plurality of second communication holes can be synchronously opened by adopting the disc type pressure stopping disc structure to release the pressure, so that the response speed and the pressure releasing working speed are further improved, and the safety performance of the battery is protected.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is an exploded view of one embodiment of the present invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of an embodiment of the present invention;
FIG. 4 is a schematic view of a stationary valve seat and a moving valve ring according to an embodiment of the present invention;
FIG. 5 is an exploded view of a passive pressure measurement assembly according to one embodiment of the present invention;
FIG. 6 is a schematic view of a partial cross-sectional configuration of a passive pressure measurement assembly according to one embodiment of the invention;
FIG. 7 is a schematic view of a pressure-stopping disc according to an embodiment of the present invention;
FIG. 8 is a schematic view of a pressure-blocking ring and a bar-pressing strip according to an embodiment of the present invention.
Reference numerals:
100. A fixed flange seat; 110. ear fixing seats; 120. a pressure relief hole; 130. driving a gear shaft; 101. a pressure measuring tank; 102. a positioning groove; 103. an arc guide slot;
200. A passive pressure measurement assembly; 210. a pressure-stopping disc; 220. a pressure sensing film; 230. a pressure chamber; 240. a vent hole; 211. a support ring; 212. a pressure-resistant ring; 213. a bar pressing bar;
300. a fixed valve seat; 310. a first communication hole; 320. a second communication hole; 330. a sliding ring groove;
400. A valve ring; 410. a valve hole; 420. a sliding lug; 430. tooth slots; 440. a communicating slot;
500. a sensor group.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
It is to be understood that this description is merely exemplary in nature and is not intended to limit the scope of the present invention.
The following describes a battery compartment pressure relief and explosion venting device according to some embodiments of the present invention with reference to the accompanying drawings.
1-7, The battery compartment pressure and explosion venting device provided by the invention comprises: the device comprises a fixed flange seat 100, a passive pressure measuring assembly 200, a fixed valve seat 300 and a movable valve ring 400 rotatably mounted on the inner side of the fixed valve seat 300, wherein a sliding ring groove 330 is formed in the surface of the fixed valve seat 300, the movable valve ring 400 is rotatably mounted on the inner side of the sliding ring groove 330, a plurality of pressure relief holes 120 uniformly distributed in the circumferential direction are formed in the surface of the fixed flange seat 100, the passive pressure measuring assembly 200 and the fixed valve seat 300 are concentrically arranged and fixedly mounted on the inner side of the fixed flange seat 100, a pressure measuring groove 101 is formed in the surface of the fixed flange seat 100, the surface of the passive pressure measuring assembly 200 is exposed through the surface of the pressure measuring groove 101, a plurality of first communication holes 310 and second communication holes 320 are formed in the surface of the fixed valve seat 300, the first communication holes 310 and the second communication holes 320 are sequentially and alternately arranged in one-to-one correspondence with the pressure relief holes 120, a sensor group 500 positioned on the inner side of a battery compartment is fixedly mounted on the surface of the passive pressure measuring assembly 200, and the sensor group 500 is used for monitoring abnormal gas and air pressure intensity in the battery compartment;
The passive pressure measuring assembly 200 comprises a pressure stopping disc 210, a pressure sensing membrane 220 and a pressure cabin 230, wherein the top surface of the pressure cabin 230 is in sealing connection with the bottom surface of the pressure sensing membrane 220, a cavity is formed in the inner side of the pressure sensing membrane 220 and the pressure cabin 230, the pressure stopping disc 210 comprises a supporting ring 211, a pressure stopping ring 212 and a plurality of bar pressing strips 213, the bar pressing strips 213 are uniformly distributed in the circumferential direction and are embedded into the pressure sensing membrane 220 for internal measurement, the pressure stopping disc 210 is of an integrated structure, and the bottom surface of the pressure stopping ring 212 is in sealing butt with the surface of the fixed valve seat 300.
The surface of the moving valve ring 400 is provided with a valve hole 410 and a communication slot 440 for communicating with the first communication hole 310 and the second communication hole 320, respectively, the valve hole 410 is in a non-communicating state with the first communication hole 310 in a non-deflecting state of the moving valve ring 400, and the first communication hole 310 is in a communicating state with the valve hole 410 after the driving gear shaft 130 drives the moving valve ring 400 to deflect, and the communication slot 440 and the second communication hole 320 are always in a communicating state.
In this embodiment, the positioning groove 102 is provided on the outer periphery of the fixed flange seat 100, the driving gear shaft 130 is fixedly mounted on the surface of the positioning groove 102, the output end is in driving engagement with the tooth groove 430 on the surface of the moving valve ring 400, the positioning groove 102 is provided on the outer periphery of the surface of the fixed flange seat 100, and the lug seat fixed on the inner side of the positioning groove 102 is provided on the surface of the fixed valve seat 300.
Specifically, the ear seat is fixed on the inner side of the positioning groove 102 through the surface of the positioning seat 300 for limiting and fixing, and positioning connection is performed.
In this embodiment, the number of the pressure relief holes 120 is twice the number of the vent holes 240, and the number of the pressure relief holes 120 is equal to the sum of the numbers of the first communication holes 310 and the second communication holes 320, the numbers of the first communication holes 310 and the second communication holes 320 are the same, and the numbers of the first communication holes 310 and the second communication holes 320 are alternately distributed in sequence, and the number of the valve holes 410 is equal to the number of the second communication holes 320.
Specifically, the first communication hole 310 and the second communication hole 320 are used for performing self-pressure relief and motorized pressure relief respectively, and in the self-pressure relief procedure, when the internal pressure of the battery compartment is abnormally greater than the internal positive pressure of the pressure compartment 230, the surface of the pressure sensing film 220 is pushed and pressed, the bar pressing strip 213 is pressed and bent, the pressure blocking ring 212 is lifted by taking the supporting ring 211 as a supporting point, the pressure blocking ring 212 is separated from the surface of the fixed valve seat 300, the surface of the first communication hole 310 is opened, and the internal pressure of the battery compartment is sequentially discharged through the pressure relief hole 120, the first communication hole 310 and the communication slot 440; in the motor pressure relief, when the sensor group 500 on the surface of the pressure sensing film 220 detects abnormal air pressure and gas in the battery compartment, the driving gear shaft 130 can be controlled to work through an electric signal, the driving gear shaft 130 drives the valve ring 400 to rotate, so that the valve hole 410 is jointed with the second communication hole 320, and the gas in the battery compartment is discharged through the pressure relief hole 120, the vent hole 240, the second communication hole 320 and the valve hole 410 in sequence.
In this embodiment, a sliding lug 420 is fixedly mounted on the outer periphery of the valve moving ring 400, an arc guide groove 103 is formed on the outer periphery of the fixed flange seat 100, and the sliding lug 420 is slidably sleeved on the inner side of the arc guide groove 103.
Specifically, the driving gear shaft 130 is meshed with the tooth groove 430 to drive the tooth groove 430 to rotate inside the slip ring groove 330, the valve hole 410 is in a non-connection state with the first communication hole 310 before the moving valve ring 400 deflects, and the first communication hole 310 is in a connection state with the valve hole 410 after the driving gear shaft 130 drives the moving valve ring 400 to deflect.
In this embodiment, the support ring 211 is in an inclined ring shape, the support ring 211 is used as a connection fulcrum of the lever pressing bar 213 and the blocking ring 212 to be in contact with the surface of the fixed valve seat 300, and the lever tilting blocking ring 212 is separated from the surface of the fixed valve seat 300 after the lever pressing bar 213 is pressed.
Specifically, the deformation of the surface of the pressure sensitive film 220 is used as the power for pushing the bar pressing bar 213 to move into the pressure cabin 230, so that the whole deformation of the pressure stopping disc 210 is driven, the pressure stopping disc 212 is separated from the surface of the fixed valve seat 300, and the passage of the second communication hole 320 is opened.
In this embodiment, the pressure sensing film 220 is a high temperature resistant rubber film structure, the pressure sensing film 220 is injection molded and wrapped on the surface of each bar pressing strip 213, and the pressure sensing film 220 and the bar pressing strips 213 are combined to form a conical arch-shaped disc structure.
In this embodiment, the driving gear 130 is of a motor structure, and the output end is connected with a gear rotatably mounted in a fixed lug on the surface of the fixed valve seat 300, and the central angles of the sliding lug 420 and the tooth slot 430 are both larger than the central angle between the first communication hole 310 and the valve hole 410.
In this embodiment, the sensor group 500 includes one of a gas pressure sensor, a gas concentration sensor, and a hydrogen sensor or a carbon dioxide sensor.
Specifically, in abnormal situations such as overcharge, external damage, or excessive temperature, abnormal reactions may occur inside the battery, resulting in decomposition of the electrolyte to generate gases, and some gases such as hydrogen and carbon dioxide may be generated, both of which may cause irreversible damage to the battery and require timely discharge.
The working principle and the using flow of the invention are as follows:
Active gas release procedure: the sensor group 500 in the gas detection system senses the internal pressure of the battery and gas components, in the case of abnormal gas pressure or abnormal gas generation, an electric signal controls the driving gear shaft 130 to work, the driving gear shaft 130 drives the driving valve ring 400 to deflect a certain angle at the inner side of the slip ring groove 330, the valve hole 410 is connected with the first communication hole 310 to form a gas hole passage penetrating through the fixed valve seat 300, under the action of the passage, the internal gas pressure of the battery is led out through the pressure relief hole 120, the vent hole 240, the first communication hole 310 and the valve hole 410 in sequence, the concentration of the abnormal gas in the battery compartment is reduced, the abnormal gas accumulation and abnormal pressure condition are found in time, measures are taken to eliminate hidden dangers in time;
Passive pressure release procedure: when the internal gas pressure of the battery compartment exceeds the set value, the internal gas pressure of the battery acts on the surface of the pressure sensing film 220 to exceed the set gas pressure in the pressure compartment 230, the internal pressure of the battery is expressed as crushing the pressure sensing film 220 and the lever pressing strip 213, the lever prying resistance ring 212 is separated from the surface of the fixed valve seat 300 by taking the supporting ring 211 as a supporting point, and the pressure of the internal gas of the battery is released through the pressure release hole 120, the vent hole 240, the second communication hole 320 and the communication slot 440 in sequence, so that the internal pressure is reduced, and the damage of the battery is avoided.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a battery compartment pressure release lets out explodes device which characterized in that includes: the device comprises a fixed flange seat (100), a passive pressure measuring assembly (200) and a fixed valve seat (300) and a movable valve ring (400) rotatably mounted on the inner side of the fixed valve seat (300), wherein a sliding ring groove (330) is formed in the surface of the fixed valve seat (300), the movable valve ring (400) is rotatably mounted on the inner side of the sliding ring groove (330), a plurality of pressure relief holes (120) uniformly distributed in the circumferential direction are formed in the surface of the fixed flange seat (100), the passive pressure measuring assembly (200) and the fixed valve seat (300) are concentrically arranged and fixedly mounted on the inner side of the fixed flange seat (100), a pressure measuring groove (101) is formed in the surface of the fixed flange seat (100), the surface of the passive pressure measuring assembly (200) is exposed through the surface of the pressure measuring groove (101), a plurality of first communication holes (310) and a plurality of second communication holes (320) are formed in the surface of the fixed valve seat (300), the first communication holes (310) and the second communication holes (320) are alternately arranged and are in one-to-one correspondence with the pressure relief holes (120), the surface of the passive pressure measuring assembly (200) is fixedly mounted on the inner side of a battery compartment, and the sensor assembly (500) is used for monitoring the abnormal strength of a gas sensor assembly (500).
The passive pressure measuring assembly (200) comprises a pressure stopping disc (210), a pressure sensing membrane (220) and a pressure cabin (230), wherein the top surface of the pressure cabin (230) is in sealing connection with the bottom surface of the pressure sensing membrane (220), a cavity is formed in the pressure sensing membrane (220) and the inner side of the pressure cabin (230), the pressure stopping disc (210) comprises a supporting ring (211), a pressure stopping ring (212) and a plurality of bar pressing strips (213), the bar pressing strips (213) are uniformly distributed in the circumferential direction and are embedded and mounted in the inner measurement of the pressure sensing membrane (220), the pressure stopping disc (210) is of an integrated structure, and the bottom surface of the pressure stopping ring (212) is in sealing butt with the surface of a fixed valve seat (300).
The surface of the movable valve ring (400) is provided with a valve hole (410) and a communication slot hole (440) which are respectively communicated with the first communication hole (310) and the second communication hole (320), the valve hole (410) is in a non-communicated state with the first communication hole (310) in a non-deflected state of the movable valve ring (400), the first communication hole (310) and the valve hole (410) are in a communicated state after the movable valve ring (400) is driven by the driving gear shaft (130) to deflect, and the communication slot hole (440) and the second communication hole (320) are always kept in the communicated state.
2. The battery compartment pressure relief explosion venting device according to claim 1, wherein a positioning groove (102) is formed in the periphery of the fixed flange seat (100), the driving gear shaft (130) is fixedly installed on the surface of the positioning groove (102) and the output end is in transmission engagement with a tooth groove (430) on the surface of the movable valve ring (400), the positioning groove (102) is formed in the periphery of the surface of the fixed flange seat (100), and an ear seat fixed on the inner side of the positioning groove (102) is arranged on the surface of the fixed valve seat (300).
3. The battery compartment pressure relief and explosion venting device according to claim 1, wherein the number of the pressure relief holes (120) is twice the number of the vent holes (240), the number of the pressure relief holes (120) is equal to the sum of the numbers of the first communication holes (310) and the second communication holes (320), the numbers of the first communication holes (310) and the second communication holes (320) are the same, the number of the first communication holes (310) and the second communication holes (320) are alternately distributed in sequence, and the number of the valve holes (410) is equal to the number of the second communication holes (320).
4. The battery compartment pressure relief explosion venting device according to claim 1, wherein a sliding lug (420) is fixedly arranged on the periphery of the movable valve ring (400), an arc guide groove (103) is formed in the periphery of the fixed flange seat (100), and the sliding lug (420) is in sliding sleeve connection with the inner side of the arc guide groove (103).
5. The battery compartment pressure relief explosion venting device according to claim 1, wherein the support ring (211) is in an inclined ring shape, the support ring (211) is used as a connecting fulcrum of the lever pressing bar (213) and the blocking ring (212) to be in contact with the surface of the fixed valve seat (300), and the lever tilting blocking ring (212) is separated from the surface of the fixed valve seat (300) after the lever pressing bar (213) is pressed.
6. The battery compartment pressure relief explosion venting device according to claim 1, wherein the pressure sensing film (220) is of a high temperature resistant rubber film structure, the pressure sensing film (220) is injection molded and wrapped on the surface of each bar pressing strip (213), and the pressure sensing film (220) and the bar pressing strips (213) are combined to form a conical arch-shaped disc structure.
7. The battery compartment pressure relief and explosion venting device according to claim 1, wherein the driving gear shaft (130) is of a motor structure, an output end of the driving gear shaft is connected with a gear rotatably installed in a fixed lug on the surface of the fixed valve seat (300), and central angles of the sliding lug (420) and the tooth groove (430) are larger than central angles of a distance between the first communication hole (310) and the valve hole (410).
8. The battery compartment pressure relief and explosion venting device according to claim 1, wherein the sensor group (500) comprises one of a gas pressure sensor, a gas concentration sensor and a hydrogen sensor or a carbon dioxide sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410683618.6A CN118564698A (en) | 2024-05-30 | 2024-05-30 | Pressure relief explosion venting device for battery compartment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410683618.6A CN118564698A (en) | 2024-05-30 | 2024-05-30 | Pressure relief explosion venting device for battery compartment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118564698A true CN118564698A (en) | 2024-08-30 |
Family
ID=92472070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410683618.6A Pending CN118564698A (en) | 2024-05-30 | 2024-05-30 | Pressure relief explosion venting device for battery compartment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118564698A (en) |
-
2024
- 2024-05-30 CN CN202410683618.6A patent/CN118564698A/en active Pending
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