CN113750401A - Battery system - Google Patents
Battery system Download PDFInfo
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- CN113750401A CN113750401A CN202110931853.7A CN202110931853A CN113750401A CN 113750401 A CN113750401 A CN 113750401A CN 202110931853 A CN202110931853 A CN 202110931853A CN 113750401 A CN113750401 A CN 113750401A
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- Prior art keywords
- battery pack
- fire extinguishing
- subsystem
- communicated
- detector
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a battery system which comprises a battery pack subsystem, a detection subsystem and a fire extinguishing subsystem. The battery pack subsystem comprises a plurality of battery pack structures and a first confluence conduit, wherein each battery pack structure is provided with a first flow guide interface and a second flow guide interface which are communicated with the inside of the battery pack structure. Wherein one end of the first flow guide interface is communicated with the outside, and the second flow guide interface is respectively connected with the detection subsystem and the fire extinguishing subsystem through the first confluence conduit. When the battery pack subsystem is normally used, the detection subsystem is communicated with the interior of the battery pack structure through the first confluence pipe and the second diversion interface, and the fire extinguishing subsystem is disconnected from the second diversion interface. The detection subsystem is capable of monitoring usage within the battery pack structure. When the detection subsystem monitors that the fire phenomenon appears in the interior of the battery pack structure, the detection subsystem controls the fire extinguishing subsystem to start, and fire extinguishing agents in the fire extinguishing subsystem enter the interior of the battery pack structure through the first confluence pipe and the second diversion interface.
Description
Technical Field
The invention relates to the technical field of battery safety, in particular to a battery system.
Background
The lithium ion battery is widely applied to energy storage power systems such as hydraulic power, firepower, wind power and solar power stations, and the like, and a plurality of fields such as electric tools, electric vehicles, military equipment, aerospace and the like, and can be said to be the largest application group of the lithium ion battery.
At present, a lithium ion battery pack in a lithium ion battery electric vehicle is used as the most core driving part of the vehicle, and with the vigorous popularization of the lithium ion battery electric vehicle, related reports of ignition of the lithium ion battery pack frequently occur, so that the safety problem of the lithium ion battery pack becomes the most important factor for people to select the lithium ion battery electric vehicle.
The car of the vehicle bottom of electric motor car or electric motor car is generally installed to current lithium battery package, and in addition there is the metal box protection in the outside of battery package, if lithium battery package is on fire, the first-hand problem is that people are difficult in time to discover, and secondly, people in case discover that the battery package is on fire because the existence of outside metal box, hardly directly carry out effectual putting out a fire to inside battery package, and then can't reach good fire extinguishing effect.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a battery system, which solves the technical problems that people are difficult to find the ignition of a lithium ion battery pack in time and that once people find the ignition of the battery pack, the internal battery pack is difficult to be effectively extinguished directly due to the existence of an external metal box.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a battery system comprises a battery pack subsystem, a detection subsystem and a fire extinguishing subsystem;
the battery pack subsystem comprises a plurality of battery pack structures and a first confluence conduit, wherein each battery pack structure is provided with a first flow guide interface and a second flow guide interface which are communicated with the inside of the battery pack structure;
one end of the first flow guide interface is communicated with the outside, the second flow guide interface can be respectively and selectively communicated with the detection subsystem and the fire extinguishing subsystem through the first confluence conduit, and the detection subsystem is electrically connected with the fire extinguishing subsystem;
when the battery pack subsystem is normally used, the detection subsystem is communicated with the interior of the battery pack structure through the first confluence conduit and the second diversion interface, the fire extinguishing subsystem is disconnected from the second diversion interface, and the detection subsystem can monitor the use condition of the interior of the battery pack structure;
when the detection subsystem monitors that the phenomenon of firing appears in the inside of battery pack structure, the detection subsystem controls the disconnection of the communication between the detection subsystem and the inside of battery pack structure, the detection subsystem controls the fire extinguishing subsystem to start, and the fire extinguishing subsystem is communicated with the inside of battery pack structure through the first confluence pipe and the second diversion interface, so that the fire extinguishing agent of the fire extinguishing subsystem enters the inside of battery pack structure to extinguish fire.
Optionally, the battery pack structure comprises a housing and at least one layer of battery packs located within the housing;
the battery pack is arranged by a plurality of single batteries in an array mode, and gaps are formed among the single batteries;
the shell comprises cover plates which are respectively arranged at the upper end and the lower end of the battery pack in the longitudinal direction, each cover plate comprises a contact surface which is in contact with the battery pack, an exposed surface which is opposite to the contact surface and a side surface which is arranged between the contact surface and four sides of the exposed surface, and the cover plates with hollow cavities are enclosed among the contact surface, the exposed surface and the side surfaces;
a flow guide hole communicated with the hollow cavity is formed in the contact surface;
the first flow guide interface and the second flow guide interface are respectively arranged on the side surfaces of the two cover plates.
Optionally, the housing includes a plurality of baffles that are located the side direction of group battery, one side of baffle is seted up and is used for pegging graft first water conservancy diversion interface with the mounting hole of second water conservancy diversion interface, just the one end of first water conservancy diversion interface with the one end of second water conservancy diversion interface passes the mounting hole extends to the outside of group battery structure.
Optionally, the outer side wall of the first collecting pipe is provided with a plurality of second connecting branch pipes communicated with the first collecting pipe;
one ends of the second connecting branch pipes are communicated with the second flow guide interfaces of the battery pack structures in a one-to-one correspondence mode.
Optionally, the detection subsystem comprises a detection manifold, a detector control valve, a detector, and a suction assembly;
one end of the detection branch pipe is communicated with the first confluence conduit, and the other end of the detection branch pipe is communicated with the detector;
the detector control valve is arranged on the detection branch pipe and is used for controlling the connection and disconnection of the detector and the first confluence conduit;
the detector is communicated with the air suction assembly, the joint of the detector and the air suction assembly is sealed, the air suction assembly is used for providing air suction power, so that the air enters one cover plate through the first flow guide interface and flows through the gap through the flow guide holes in the cover plate, the air enters another flow guide hole in the other cover plate and is discharged through the second flow guide interface, the discharged air flows into the first confluence pipe through the second connecting branch pipe and finally enters the detector through the detection branch pipe;
the detector is used for detecting air flowing through the interior of the battery pack structure and controlling the fire extinguishing subsystem to extinguish fire by sending a control command.
Optionally, the fire suppression subsystem comprises a fire suppression branch, a fire extinguisher storage container, a fire suppression controller, and a fire suppression control switch;
one end of the fire extinguishing branch pipe is communicated with the first confluence conduit, the other end of the fire extinguishing branch pipe is communicated with the fire extinguishing controller, and the fire extinguisher storage container is hermetically connected with the fire extinguishing controller through the fire extinguishing branch pipe;
the fire extinguishing controller and the fire extinguishing control switch are used for receiving the control instruction sent by the detector, controlling the fire extinguishing controller to start and controlling the fire extinguishing control switch to be turned on;
the fire extinguishing controller is activated to control opening of the fire extinguisher storage container.
Optionally, the detector is electrically connected to the fire extinguishing controller, the fire extinguishing control switch and the detector control valve through wires.
Optionally, the single batteries are supported by a support plate.
Optionally, the air conditioner further comprises a second collecting pipe, a plurality of first connecting branch pipes communicated with the second collecting pipe are arranged on the side wall of the second collecting pipe, one end of each first connecting branch pipe is communicated with the first flow guide interface, one end of the second collecting pipe is communicated with a discharge box, an air inlet is arranged on the discharge box, and the air inlet is used for allowing outside air to enter.
(III) advantageous effects
The invention has the beneficial effects that: according to the battery system, the battery pack subsystem is communicated with the outside, and meanwhile, the battery pack subsystem is selectively communicated with the detection subsystem and the fire extinguishing subsystem, so that accurate detection and effective fire extinguishing can be realized. In addition, the cover plate added in the battery pack has low manufacturing cost, small occupied size and simple structure, is suitable for batch production, and effectively improves the safety of the battery pack.
Drawings
Fig. 1 is a schematic structural view of a battery system according to the present invention;
fig. 2 is an exploded view schematically illustrating the structure of a battery pack according to the present invention;
fig. 3 is a partially cut-away schematic view of a cover plate over the battery pack structure of fig. 2.
[ description of reference ]
1: a battery pack subsystem; 10: a battery pack structure; 11: a first flow guide interface; 12: a second flow guide interface; 100: a single battery;
2: a detection subsystem; 21: connecting branch pipes; 22: a detector control valve; 23: a detector; 24: a getter assembly;
3: a fire suppression subsystem; 31: a fire extinguishing branch pipe; 32: a fire extinguisher storage container; 33: a fire suppression controller; 34: a fire extinguishing control switch;
4: a first manifold conduit; 41: a second connecting branch pipe;
5: a cover plate; 51: a contact surface; 52: exposing the surface; 53: a side surface; 54: a flow guide hole;
6: a baffle plate; 61: mounting holes;
7: a support plate;
8: a second manifold conduit; 81: a first connecting branch pipe;
9: and (4) a discharge tank.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. Where directional terms such as "upper", "lower", "inner" and "outer" are used herein, reference is made to the orientation of FIG. 1. The side where the first current guiding interface 11 is located is defined as the lower side, and the side where the battery pack subsystem 1 is located is defined as the left side. The direction in which the three battery pack structures 10 are stacked one on top of the other is defined as a longitudinal direction.
Referring to fig. 1, a battery system according to an embodiment of the present invention includes a battery pack subsystem 1, a detection subsystem 2, and a fire extinguishing subsystem 3.
The battery subsystem 1 includes three battery structures 10. The battery system 1 further comprises a first bus duct 4. And the three battery structures 10 are horizontally placed and stacked one above the other. I.e. longitudinally arranged, which has the advantage of avoiding shadowing of the first bus duct 4.
Referring to fig. 2-3, each battery pack structure 10 includes a housing and at least one layer of battery packs stacked one on top of the other within the housing.
The battery pack is arranged by a plurality of unit cells 100 in an array with gaps between the unit cells 100.
The housing includes cover plates 5 respectively disposed at upper and lower ends in a longitudinal direction of the battery pack, the cover plates 5 include a contact surface 51 contacting the battery pack, an exposed surface 52 opposite to the contact surface 51, and a side surface 53 disposed between four sides of the contact surface 51 and the exposed surface 52, and the cover plates 5 having hollow chambers are enclosed among the contact surface 51, the exposed surface 52, and the side surface 53.
The contact surface 51 is provided with flow guiding holes 54 communicated with the hollow cavity at equal intervals, and the flow guiding holes 54 correspond to the gaps one by one.
The side surfaces 53 of the two cover plates 5 are respectively provided with a first diversion port 11 and a second diversion port 12, the first diversion port 11 is communicated with the hollow chamber and the outside, one end of the second diversion port 12 is communicated with the hollow chamber, and the other end of the second diversion port is selectively communicated with the detection subsystem 2 and the fire extinguishing subsystem 3. A communication path is formed through the gap of the first/second diversion ports 11/12, the hollow chamber, the diversion hole 54, and the air/fire extinguishing agent is supplied to the interior of the battery pack structure 10.
The aperture size of the first diversion port 11 and the aperture size of the second diversion port 12 are convenient for the production and manufacture of the process.
The bottom of the first confluence pipe 4 is respectively provided with the detection subsystem 2 and the fire extinguishing subsystem 3, so that the use of the confluence pipe 4 can be saved, and the cost is reduced.
The battery subsystem 1 further includes a second bus duct 8. The right end of each first diversion port 11 is communicated with the discharge tank 9 through a second confluence conduit 8.
Specifically, three first connecting branch pipes 81 communicated with the second collecting pipe 8 are arranged on the side wall of the second collecting pipe, and the left end of the first connecting branch pipe 81 is communicated with the first flow guide connector 11; the right end of the first connecting branch pipe 81 communicates with the second confluence duct 8. The lower end of the second confluence conduit 8 is communicated with a discharge tank 9. The exhaust box 9 is provided with an air inlet for the entrance of outside air. Preferably, a mesh enclosure is arranged at the air inlet and used for insect prevention, dust prevention and the like.
The right end of each second diversion interface 12 is connected with the detection subsystem 2 and the fire extinguishing subsystem 3 through the first confluence conduit 4 respectively, and the detection subsystem 2 is electrically connected with the fire extinguishing subsystem 3.
Specifically, the outer side wall of the first collecting pipe 4 is provided with three second connecting branch pipes 41 communicated with the first collecting pipe, and the left ends of the three second connecting branch pipes 41 are communicated with the second diversion port 12; the right ends of the three second connecting branch pipes 41 communicate with the first confluence duct 4. The lower end of the first confluence conduit 4 is respectively communicated with the detection subsystem 2 and the fire extinguishing subsystem 3 in a selectable mode. In the present invention, the selectable communication specifically means that when the interior of the battery pack structure 10 is detected, the fire extinguishing subsystem 3 is communicated with the interior of the battery pack structure 10 through the first collecting duct 4 and the second diversion port 12, and at this time, the communication of the first collecting duct 4 between the fire extinguishing subsystem 3 and the battery pack structure 10 is in a disconnected state. When the detection subsystem 2 detects the internal fire of the battery pack structure 10, the detection subsystem 2 controls the fire extinguishing subsystem 3 to be opened, accordingly, the communication of the first confluence conduit 4 between the detection subsystem 2 and the battery pack structure 10 is in a disconnection state, and the communication of the first confluence conduit 4 between the fire extinguishing subsystem 3 and the battery pack structure 10 is in a connection state, so that the fire extinguishing agent in the fire extinguishing subsystem 3 can smoothly enter the internal of the battery pack structure 10 to extinguish the fire.
It should be noted that the three second connecting branch pipes 41 are shorter than the three first connecting branch pipes 81. The installation space is rationalized, and the space utilization rate is increased.
When the battery pack subsystem 1 is in normal use, the detection subsystem 2 is communicated with the inside of the battery pack structure 10 through the first confluence conduit 4 and the second diversion interface 12, and at the moment, the detection subsystem 2 can monitor the use condition of the inside of the battery pack structure 10.
It should be noted that the normal use of the battery pack subsystem 1 specifically means that the battery pack subsystem 1 is in a normal operating state, supplies power to the device, and the fire does not occur inside the battery pack subsystem.
When the detection subsystem 2 monitors that the phenomenon of catching a fire appears in the inside of battery pack structure 10, detect the intercommunication disconnection of subsystem 2 control it and battery pack structure 10 inside, avoid the fire extinguishing agent of the subsystem 3 of putting out a fire to run off from the detection subsystem 2 and the connector department of first converging pipe 4 when using. The detection subsystem 2 controls the fire extinguishing subsystem 3 to start, and fire extinguishing agent in the fire extinguishing subsystem 3 enters the interior of the battery pack structure 10 through the first confluence pipe 4 and the second diversion port 12, so that the fire extinguishing agent extinguishes the interior of the battery pack.
The invention provides a battery system.A battery pack subsystem 1 is provided with a first flow guide interface 11 communicated with the outside and a second flow guide interface 12 communicated with a detection subsystem 2 and a fire extinguishing subsystem 3, so that accurate detection and effective fire extinguishing can be realized, and meanwhile, the battery system has the functions of temperature control in normal time and temperature reduction in fire extinguishing. Meanwhile, the cover plate 5 added in the battery pack 10 has the advantages of low manufacturing cost, small occupied volume and simple structure, is suitable for batch production, and effectively improves the safety of the battery pack.
Further, the detection subsystem 2 includes a detection branch 21, a detector control valve 22, a detector 23, and an aspiration assembly 24.
The right end of the detection branch pipe 21 is communicated with the first confluence duct 4, and the left end of the detection branch pipe 21 is communicated with the detector 23.
The detector control valve 22 is disposed on the detection branch pipe 21, and the detector control valve 22 is used for controlling the on-off of the detector 23 and the first confluence conduit 4.
The detector 23 is communicated with the air suction assembly 24, and the joint of the detector 23 and the air suction assembly 24 is sealed. It should be noted that the detector 23 is hermetically connected to the getter module 24, so as to ensure the gettering effect of the getter module 24. The air suction assembly 24 is used for providing air suction power, so that air enters the cover plate 5 through the first flow guide port 11, flows through the gap through the flow guide holes 54 on the cover plate 5, enters the flow guide holes 54 on the other cover plate 5, is discharged through the second flow guide port 12, flows into the first confluence pipe 4 through the second connecting branch pipe 41, and finally enters the detector 23 through the detection branch pipe 21;
the detector 23 is used to detect the air flowing through the interior of the battery pack structure 10 and to control the fire suppression subsystem 3 to extinguish a fire by issuing control commands.
Specifically, the detector 23 is embodied as a photoelectric smoke detector, which can accurately detect whether there is a fire risk of the air in the gap of the battery pack structure 10 by detecting smoke and/or a specific gas, temperature, etc. from the air in the gap of the battery pack structure 10.
Further, the fire suppression subsystem 3 includes a fire suppression branch 31, a fire extinguisher storage container 32, a fire suppression controller 33, and a fire suppression control switch 34.
The right end of the fire extinguishing branch pipe 31 is communicated with the first confluence pipe 4, the left end of the fire extinguishing branch pipe 31 is communicated with the fire extinguishing controller 33, and the fire extinguisher storage container 32 is hermetically connected with the fire extinguishing controller 33 through the fire extinguishing branch pipe 31. It should be noted that the fire extinguisher storage vessel 32 is sealingly connected to the fire suppression controller 33 to prevent the fire suppressant from leaking.
The fire extinguishing controller 33 and the fire extinguishing control switch 34 are used for receiving the control instruction sent by the detector 23, controlling the fire extinguishing controller 33 to start and controlling the fire extinguishing control switch 34 to be opened.
The fire suppression controller 33 is activated to control the opening of the fire extinguisher storage vessel 32 to allow fire suppressant within the fire extinguisher storage vessel 32 to enter the interior of the battery subsystem 1 through the first manifold conduit 4.
Further, the detector 23 is electrically connected to the fire extinguishing controller 33, the fire extinguishing control switch 34, and the detector control valve 22 through wires.
Specifically, the invention provides a battery system which can realize two functions, wherein the main function is a fire detection function, gas flows through gaps of single batteries 100 in a closed space and then brings the gas around each single battery 100 into a detector 23, smoke and/or specific gas, temperature and the like are detected in the detector 23, and the fire hazard in a battery pack can be accurately detected; meanwhile, since the gas flows through the gaps of the unit cells 100, a secondary function that is easily implemented is a battery pack temperature control function.
Further, the housing includes a plurality of baffles 6 located laterally of the battery pack. Wherein the lateral direction is opposite to the longitudinal direction when describing the cover plate 5. That is, the upper side, the lower side, the left side and the right side of the battery pack structure 10 are respectively provided with the baffle 6, the upper and lower ends of the baffle 6 on the left and right sides are higher than or equal to the exposed surface 52 of the cover plate 5, the side wall of the baffle 6 on the right side is provided with the mounting hole 61 for inserting the first diversion interface 11 and the second diversion interface 12, and one end of the first diversion interface 11 and one end of the second diversion interface 12 penetrate through the mounting hole 61 and extend to the outside of the battery pack structure 10.
Specifically, the other baffles 6 to be installed are installed outside the cap plate 5 to avoid obstructing the flow of fluid between the baffle holes 54 and the gaps of the unit batteries 100. The baffle 6 is provided with mounting holes 61, and the first diversion port 11 and the second diversion port 12 of each layer of battery pack respectively penetrate through the two mounting holes 61 and are exposed out of the outer surface of the layer of battery pack during assembly. The first diversion port 11 and the second diversion port 12 on the battery pack are convenient to communicate with the outside.
Further, the unit batteries 100 are supported by the support plate 7 therebetween. The formation of the gap between the unit batteries 100 is facilitated.
The support plate 7 may be disposed between two laterally adjacent unit batteries 100, may be disposed between two longitudinally adjacent unit batteries 100, or may be disposed between every two adjacent unit batteries 100. The present invention is not particularly limited.
The specific working process is as follows: when the battery pack subsystem 1 is in normal use, at this time, the detector control valve 22 is in an open state, suction is performed by means of the suction force of the suction component 24, under the action of the suction force, clean air entering from the air inlet of the discharge box 9 flows into the second confluence conduit 8 from the air inlet and the discharge space 13, and then flows through the three first connecting branch pipes 81 on the second confluence conduit 8 to enter the battery pack subsystem 1 through the first diversion interfaces 11, namely, the air flows through one cover plate 5 below from the first diversion interfaces 11, and flows through the diversion holes 54 through the hollow chamber on the cover plate 5 below to enter gaps formed among the plurality of single batteries 100 of the battery pack structure; then enters the hollow chamber of the other cover plate 5 above through the diversion hole 54 on the other cover plate 5 above, and finally is discharged from the battery pack structure 10 through the second diversion port 12 communicated with the hollow chamber, and then the air is converged to the first converging duct 4 through the three second connecting branch pipes 41 communicated with the second diversion port 12; at this time, the detector control valve 22 is in an open state, and the fire extinguishing control switch 34 is in a closed state, so that air then enters the detector 23 from the first confluence duct 4 through the detector control valve 22, and the detector 23 detects the air in the gap of the battery pack structure 10 to obtain a detection result. There are two detection results. The first detection result is detection of air in the gap from the battery pack structure 10 as a fire state, and the other is detection of air in the gap from the battery pack structure 10 as a safety state.
When the detection subsystem 2 monitors that the inside of the battery pack structure 10 is in a fire state, the detection subsystem 2 controls the detector control valve 22 to be closed through the detector 23, and controls the fire extinguishing controller 33 in the fire extinguishing subsystem 3 to be started and the fire extinguishing control switch 34 to be opened, and fire extinguishing agents in the fire extinguisher storage container 32 in the fire extinguishing subsystem 3 enter the first converging pipe 4 through the fire extinguishing branch pipe 31, then flow to the second flow guide interface 12 through the first converging pipe 4 and the three second connecting branch pipes 41, then enter the hollow cavity of the cover plate 5 above, and then enter the gap inside the battery pack structure 10 through the flow guide hole 54, so that the battery pack structure 10 can be better extinguished from the gap, and the fire extinguishing effect is better. So that the fire extinguishing agent extinguishes the interior of the battery pack.
It should be noted that, when putting out a fire to the inside of battery pack structure 10, in order to make the fire extinguishing complete, with the inside that fire extinguishing agent is full of battery pack structure 10 completely, simultaneously in order to avoid the indiscriminate phenomenon of spouting of fire extinguishing agent, with the first water conservancy diversion interface 11 of water conservancy diversion hole 54 flow through on the apron 5 of fire extinguishing agent through the below, converge to the second through three first connecting branch pipes 81 and converge pipe 8, fire extinguishing agent can directly discharge to discharging in the case 9 at last, accomplish the inside timely effectual fire extinguishing of battery pack structure 10.
It should be noted that, in the present invention, any one of the first diversion port 11 and the second diversion port 12 is communicated with the outside, and the other is connected to the detection subsystem and the fire extinguishing subsystem, so as to implement the fire extinguishing system, which is not limited specifically.
It should be noted that the battery system in the present invention may be provided with a plurality of battery subsystems 1 corresponding to one detection subsystem 2 and one fire extinguishing subsystem 3, and the connection relationship between each battery subsystem 1 and its corresponding detection subsystem 2 and its corresponding fire extinguishing subsystem 3 is switched through a plurality of valves, so as to implement the functions of monitoring the use condition and extinguishing fire in the plurality of battery subsystems 1. The present invention is not particularly limited.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (9)
1. A battery system, characterized in that: comprises a battery pack subsystem (1), a detection subsystem (2) and a fire extinguishing subsystem (3);
the battery pack subsystem (1) comprises a plurality of battery pack structures (10) and a first confluence conduit (4), wherein the battery pack structures (10) are provided with a first diversion interface (11) and a second diversion interface (12) communicated with the interior of the battery pack structures;
one end of the first flow guide interface (11) is communicated with the outside, the second flow guide interface (12) can be respectively and selectively communicated with the detection subsystem (2) and the fire extinguishing subsystem (3) through the first confluence conduit (4), and the detection subsystem (2) is electrically connected with the fire extinguishing subsystem (3);
when the battery pack subsystem (1) is in normal use, the detection subsystem (2) is communicated with the inside of the battery pack structure (10) through the first confluence conduit (4) and the second diversion interface (12), the fire extinguishing subsystem (3) is disconnected from the second diversion interface (12), and the detection subsystem (2) can monitor the use condition of the inside of the battery pack structure (10);
when the detection subsystem (2) monitors that the phenomenon of catching fire appears in the inside of battery pack structure (10), detect subsystem (2) control its with the inside intercommunication disconnection of battery pack structure (10), detect subsystem (2) control fire extinguishing subsystem (3) start, and fire extinguishing subsystem (3) are through first pipe (4) that converges, second water conservancy diversion interface (12) with the inside intercommunication of battery pack structure (10) so that the fire extinguishing agent of fire extinguishing subsystem (3) gets into put out a fire in inside of battery pack structure (10).
2. The battery system of claim 1, wherein: the battery pack structure (10) comprises a housing and at least one layer of battery packs positioned in the housing;
the battery pack is arranged by a plurality of single batteries (100) in an array mode, and gaps are reserved among the single batteries (100);
the battery pack comprises a battery pack and a shell, wherein the shell comprises cover plates (5) which are respectively arranged at the upper end and the lower end of the battery pack in the longitudinal direction, each cover plate (5) comprises a contact surface (51) which is in contact with the battery pack, an exposed surface (52) which is opposite to the contact surface (51) and a side surface (53) which is arranged between the contact surface (51) and the four sides of the exposed surface (52), and the cover plates (5) with hollow chambers are enclosed among the contact surface (51), the exposed surface (52) and the side surface (53);
a flow guide hole (54) communicated with the hollow cavity is formed in the contact surface (51);
the first flow guide interface (11) and the second flow guide interface (12) are respectively arranged on the side faces (53) of the two cover plates (5).
3. The battery system of claim 2, wherein: the shell is including being located a plurality of baffles (6) of the side direction of group battery, the mounting hole (61) that are used for pegging graft first water conservancy diversion interface (11) with second water conservancy diversion interface (12) are seted up to one side of baffle (6), just the one end of first water conservancy diversion interface (11) with the one end of second water conservancy diversion interface (12) is passed mounting hole (61) extend to the outside of group battery structure (10).
4. The battery system of claim 2, wherein: the outer side wall of the first confluence conduit (4) is provided with a plurality of second connecting branch pipes (41) communicated with the first confluence conduit;
one ends of the second connecting branch pipes (41) are communicated with the second diversion interfaces (12) of the battery pack structures (10) in a one-to-one correspondence manner.
5. The battery system of claim 4, wherein: the detection subsystem (2) comprises a detection branch pipe (21), a detector control valve (22), a detector (23) and an air suction assembly (24);
one end of the detection branch pipe (21) is communicated with the first confluence conduit (4), and the other end of the detection branch pipe (21) is communicated with the detector (23);
the detector control valve (22) is arranged on the detection branch pipe (21), and the detector control valve (22) is used for controlling the connection and disconnection of the detector (23) and the first confluence conduit (4);
the detector (23) is communicated with the air suction assembly (24), the joint of the detector (23) and the air suction assembly (24) is sealed, the air suction assembly (24) is used for providing air suction power, so that the air enters one cover plate (5) through the first flow guide port (11) and flows through the gap through the flow guide holes (54) on the cover plate (5), the air enters the other cover plate (5) again and is discharged through the second flow guide port (12), the discharged air flows into the first confluence conduit (4) through the second connecting branch pipe (41) and finally enters the detector (23) through the detection branch pipe (21);
the detector (23) is used for detecting air flowing through the interior of the battery pack structure (10) and controlling the fire extinguishing subsystem (3) to extinguish fire by sending out a control command.
6. The battery system of claim 5, wherein: the fire extinguishing subsystem (3) comprises a fire extinguishing branch pipe (31), a fire extinguisher storage container (32), a fire extinguishing controller (33) and a fire extinguishing control switch (34);
one end of the fire extinguishing branch pipe (31) is communicated with the first confluence conduit (4), the other end of the fire extinguishing branch pipe (31) is communicated with the fire extinguishing controller (33), and the fire extinguisher storage container (32) is hermetically connected with the fire extinguishing controller (33) through the fire extinguishing branch pipe (31);
the fire extinguishing controller (33) and the fire extinguishing control switch (34) are used for receiving the control instruction sent by the detector (23), controlling the fire extinguishing controller (33) to be started, and controlling the fire extinguishing control switch (34) to be opened;
the fire extinguisher controller (33) is activated for controlling the opening of the fire extinguisher storage container (32).
7. The battery system of claim 6, wherein: the detector (23) is electrically connected with the fire extinguishing controller (33), the fire extinguishing control switch (34) and the detector control valve (22) through leads.
8. The battery system of claim 2, wherein: the single batteries (100) are supported by a support plate (7).
9. The battery system of claim 1, wherein: still include second manifold pipe (8), set up a plurality of first connecting branch pipes (81) that are linked together with it on the lateral wall of second manifold pipe (8), the one end of first connecting branch pipe (81) with first water conservancy diversion interface (11) are linked together, the one end intercommunication of second manifold pipe (8) has discharge box (9), discharge box (9) are last to have seted up the air inlet, the air inlet is used for the entering of outside air.
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| CN202110931853.7A CN113750401B (en) | 2021-08-13 | 2021-08-13 | Battery system |
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| CN202110931853.7A CN113750401B (en) | 2021-08-13 | 2021-08-13 | Battery system |
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| CN113750401B CN113750401B (en) | 2022-10-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115869565A (en) * | 2022-12-20 | 2023-03-31 | 珠海科创储能科技有限公司 | PACK-level fire fighting method and structure |
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| CN113750401B (en) | 2022-10-14 |
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