CN112820978B - Battery box liquid cooling heat dissipation and fire extinguishing system - Google Patents

Battery box liquid cooling heat dissipation and fire extinguishing system Download PDF

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Publication number
CN112820978B
CN112820978B CN202110046410.XA CN202110046410A CN112820978B CN 112820978 B CN112820978 B CN 112820978B CN 202110046410 A CN202110046410 A CN 202110046410A CN 112820978 B CN112820978 B CN 112820978B
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liquid
battery box
battery
liquid cooling
pipe
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CN112820978A (en
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尚德华
刘越
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Shanghai Lianzhisheng Shuneng New Energy Technology Co.,Ltd.
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Aopu Shanghai New Energy Co Ltd
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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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • 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
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Automation & Control Theory (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention provides a liquid cooling heat dissipation and fire fighting system of a battery box, which relates to the field of battery box safety and comprises the battery box, a battery cell module, a liquid cooling part, a fire fighting part, a battery control module and a smoke monitoring module; the liquid cooling board is located the below of electric core module, embeds liquid circulation pipeline in the liquid cooling board, and the both ends of liquid circulation pipeline are connected with liquid cooling board feed liquor pipe and liquid cooling board drain pipe respectively, and the end of liquid cooling board drain pipe sets up the three-way valve, and the three export of three-way valve is connected with liquid cooling board drain pipe, liquid discharge pipe and hydrojet pipe respectively, and the other end and the atomizer of hydrojet pipe are connected and insert inside the battery box. According to the invention, when the battery core works normally, the liquid cooling part is used for cooling the battery core, when the battery monitoring module monitors that the temperature of the battery core is higher, the voltage is abnormal or the smoke monitoring module detects smoke, the battery control module enables the three-way valve to switch the liquid flowing direction, so that liquid flowing out of the liquid cooling plate liquid outlet pipe flows into the liquid spraying pipe, and the liquid is sprayed to cool and extinguish the fire of the battery core.

Description

Battery box liquid cooling heat dissipation and fire extinguishing system
Technical Field
The invention belongs to the field of battery box safety, and particularly relates to a liquid cooling heat dissipation and fire fighting system for a battery box.
Background
Research shows that the internal resistance, voltage, capacity and service life of the lithium ion battery are very sensitive to temperature, the optimal working temperature range of the battery core is 20-40 ℃, and according to statistical results, the cycle life of the battery is reduced by two months when the working temperature is increased by 1 ℃. Furthermore, the maximum temperature difference in the stack should be kept below 5 ℃ to promote balanced charging and discharging of the cells during cycling. Therefore, the battery thermal management system controls the battery temperature within an acceptable range and maintains the necessary temperature uniformity of the battery pack. Common techniques for battery thermal management include: air cooling, liquid cooling, and temperature regulation using solid-liquid phase change materials.
Current lithium ion battery fire extinguishing system includes temperature and humidity sensor, smoke sensor and fire extinguishing systems, and when temperature and humidity sensor and smoke sensor perception fire set up the standard, it can export simultaneously and connect electric signal to monitoring server, and the server sends the instruction to the controller and carries out the fire control and put out a fire.
The current battery cooling system and the fire-fighting system are two sets of systems with mutually independent control and equipment, and the design and the installation of the systems are finished by different companies. In addition, the fire protection system in the market is usually installed on the top of a room, and when the fire protection system gives an alarm, the battery cells in the battery box can be seriously damaged and cannot be remedied.
Therefore, the invention designs a system with battery heat dissipation and fire fighting functions, so that the manufacturing cost is lower, the fire fighting timeliness is higher, in addition, the fire fighting system can more rapidly discover hidden dangers, timely cool and save the battery cell, and eliminate the fire situation before firing.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a battery box liquid cooling heat dissipation and fire extinguishing system, so as to obtain a system with both battery heat dissipation and fire extinguishing, which is low in cost and has a high fire fighting time.
In order to achieve the purpose, the invention provides a liquid cooling heat dissipation and fire fighting system of a battery box, which is characterized by comprising the battery box, a battery cell module, a liquid cooling part, a fire fighting part, a battery control module and a smoke monitoring module;
the battery box is of a hollow cuboid structure and comprises a battery box upper cover and a battery box bottom shell, the battery box bottom shell is of a hollow cuboid structure with an opening at the upper end, the battery box upper cover is positioned at the upper part of the battery box and is in adaptive connection with the opening at the upper end of the battery box bottom shell, and the front part of the battery box bottom shell is a battery box front plate;
the battery cell module is positioned inside the battery box;
the liquid cooling part comprises a liquid cooling plate, a liquid cooling plate liquid inlet pipe, a liquid cooling plate liquid outlet pipe and a liquid discharging pipe;
the fire-fighting part comprises a liquid spraying pipe, a three-way valve and an atomizing nozzle;
the liquid cooling plate is positioned below the battery cell module, a liquid circulation pipeline is arranged in the liquid cooling plate, a liquid inlet pipe and a liquid outlet pipe of the liquid cooling plate are positioned on the same side of the liquid cooling plate, two ends of the liquid circulation pipeline are respectively connected with the liquid inlet pipe and the liquid outlet pipe of the liquid cooling plate, a three-way valve is arranged at the tail end of the liquid outlet pipe of the liquid cooling plate, three outlets of the three-way valve are respectively connected with the liquid outlet pipe of the liquid cooling plate, a liquid discharge pipe and a liquid spraying pipe, and the other end of the liquid spraying pipe is connected with an atomizing nozzle and inserted into the battery box;
the three-way valve can switch the liquid flowing out of the liquid cooling plate liquid outlet pipe to flow into the liquid spraying pipe or directly discharge the liquid from the liquid discharging pipe;
when the temperature of the battery cell is normal, the battery box starts a liquid cooling heat dissipation mode, a liquid cooling plate below the battery cell module dissipates heat and cools the battery cell, liquid flows into the liquid cooling plate from a liquid inlet pipe and flows to a liquid outlet pipe of the cooling liquid through a liquid circulation pipeline, an outlet on the three-way valve, which is connected with a liquid spraying pipe, is closed, an outlet connected with a liquid discharging pipe is opened, finally the liquid flows out of the liquid discharging pipe through the three-way valve, and the liquid flowing in the liquid in the heat discharge pipeline of the battery cell flows out along with the liquid in the process; when the temperature of the battery core is abnormal, the battery box starts a fire-fighting mode, liquid enters the liquid spraying pipe through the three-way valve in a switching mode, is converted into fog-shaped spraying through the atomizing nozzle, and is fully cooled down for the battery core.
Furthermore, the three-way valve is an electromagnetic three-way valve which is controlled by electrifying, and the switching of the passage is realized by controlling the on-off of the current.
Furthermore, the smoke monitoring module is connected with the battery control module through an electric wire, and the battery control module is connected with the three-way valve through a signal wire.
The battery box fire-fighting modes comprise the following two modes;
one of them, battery control module can monitor the temperature and the voltage of electric core, works as when battery monitoring module monitors that electric core temperature is higher or voltage is unusual, when the cooling demand can't be accomplished to the liquid cooling board, battery control module will make the three-way valve switch liquid flow direction for liquid gets into in the spray tube, close the export of being connected with the liquid discharge pipe on the three-way valve promptly, open the export of being connected with spray tube on the three-way valve, final liquid sprays the electric core through atomizer on, liquid contact high temperature electric core after the atomizing is back, takes away the heat that electric core distributed out through the phase transition, reduces the risk that electric core catches fire.
And secondly, the smoke monitoring module is connected into the battery control module, when the smoke monitoring module monitors smoke and feeds back signals to the battery control module, the battery control module also enables the three-way valve to switch the flowing direction of liquid, so that the liquid flowing out of the liquid cooling plate liquid outlet pipe flows into the liquid spraying pipe, and the liquid is sprayed on the electric core in a large area through the atomizing nozzle, so that open fire is rapidly extinguished.
Further, liquid circulation pipeline is the S type, and the circulation pipeline of S type makes the liquid cooling board have higher liquid cooling area, and the heat transfer that electric core gived off flows along with liquid in to the liquid that flows, improves the radiating efficiency of electric core.
Furthermore, the battery box upper cover is connected with the battery box bottom shell in a detachable mode, and the battery box upper cover can be opened when the battery cells are placed or taken or the battery box is overhauled.
Further, the battery box front plate is detachably connected with the battery box bottom shell.
Further, the battery control module is located on the battery box front plate.
Further, the smoke monitoring module is located below the upper cover of the battery box and connected with the upper cover of the battery box.
Further, the liquid flowing through the liquid flowing pipeline is perfluorohexanone.
The liquid cooling liquid and the fire-fighting liquid used in the invention are stored in the pipeline in liquid state at normal temperature, and when the temperature of the electric core is higher, the liquid cooling liquid and the fire-fighting liquid are sprayed out through the atomizing nozzle and contact with the high-temperature electric core to vaporize and absorb heat. The liquid cooling liquid and the fire fighting liquid are insulated and nontoxic, and cannot damage the battery core. The common use is perfluorohexanone, the boiling point of which is 49 ℃, and the method is not limited to perfluorohexanone and meets the requirements.
The invention has at least the following beneficial technical effects:
(1) the invention provides a liquid cooling heat dissipation and fire fighting system of a battery box, which comprises the battery box, a battery cell module, a liquid cooling part, a fire fighting part, a battery control module and a smoke monitoring module, wherein a liquid cooling plate positioned below the battery cell module can dissipate heat and cool heat generated when a battery cell normally works, and in addition, a liquid spraying pipe, an atomizing nozzle, a three-way valve, the battery control module and the smoke monitoring module play a role in fire fighting and extinguishing together, so that fire hidden dangers can be discovered more timely and open flames can be eliminated timely.
(2) According to the invention, the smoke monitoring module is connected to the battery control module, the temperature and voltage monitoring function in the battery control module is shared, the temperature and voltage monitoring in a fire fighting mode is saved, the judgment is more accurate, and the smoke monitoring module is used for monitoring when smoke occurs.
(3) The fire-fighting system can spray fire-fighting liquid for cooling when the temperature of the battery core is abnormal or smoke is detected, the fire-fighting liquid has insulating and non-toxic properties, can be vaporized at normal temperature, and can effectively reduce the temperature of the battery core by utilizing phase change after being sprayed out, so that the battery core is not damaged while the temperature of the battery core is reduced.
(4) The fire fighting system and the liquid cooling heat dissipation system share one fluid pipeline, so that the liquid is multipurpose, the pipeline is multipurpose, the liquid cooling heat dissipation of the battery box and the structure of the fire fighting system can be greatly simplified, and the cost is saved.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic diagram of a battery box liquid heat dissipation and fire protection system;
FIG. 2 is a schematic view of the liquid cooling part and the fire fighting part of the battery box;
FIG. 3 is a schematic view of a liquid circulation pipe built in a liquid cooling plate according to an embodiment of the present invention;
fig. 4 is a diagram of a fire-fighting mode control system of the battery box.
The reference numbers are as follows: 1-a cell module; 2-a battery control module; 3-a smoke monitoring module; 4-upper cover of battery box; 5-bottom shell of battery box; 6-battery box front plate; 7-liquid cooling plate; 8-liquid cooling plate liquid inlet pipe; 9-liquid cooling plate liquid outlet pipe; 10-liquid discharge pipe; 11-a liquid spray pipe; 12-a three-way valve; 13-an atomizer; 14-liquid flow conduit.
Detailed Description
The present invention will be further described with reference to the following embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example (b):
referring to fig. 1 to 4, in a preferred embodiment, a battery box liquid cooling heat dissipation and fire fighting system includes a battery box, a battery module 1, a liquid cooling part, a fire fighting part, a battery control module 2 and a smoke monitoring module 3;
the battery box is of a hollow cuboid structure and comprises a battery box upper cover 4 and a battery box bottom shell 5, the battery box bottom shell 5 is of a hollow cuboid structure with an upper end opening, the battery box upper cover 4 is positioned at the upper part of the battery box and is in adaptive connection with the upper end opening of the battery box bottom shell 5, and the front part of the battery box bottom shell 5 is provided with a battery box front plate 6;
the battery cell module 1 is positioned inside the battery box;
an aluminum bar is arranged above the battery cell module 1 and is used for connecting the positive electrode and the negative electrode of the battery cell in series;
the liquid cooling part comprises a liquid cooling plate 7, a liquid cooling plate liquid inlet pipe 8, a liquid cooling plate liquid outlet pipe 9 and a liquid discharge pipe 10;
the fire fighting part comprises a liquid spraying pipe 11, a three-way valve 12 and an atomizing nozzle 13;
the liquid cooling plate 7 is located below the battery cell module 1, a liquid circulation pipeline 14 is arranged in the liquid cooling plate 7, the liquid cooling plate liquid inlet pipe 8 and the liquid cooling plate liquid outlet pipe 9 are located on the same side of the liquid cooling plate 7, two ends of the liquid circulation pipeline 14 are respectively connected with the liquid cooling plate liquid inlet pipe 8 and the liquid cooling plate liquid outlet pipe 9, a three-way valve 12 is arranged at the tail end of the liquid cooling plate liquid outlet pipe 9, three outlets of the three-way valve 12 are respectively connected with the liquid cooling plate liquid outlet pipe 9, a liquid discharge pipe 10 and a liquid spray pipe 11, and the other end of the liquid spray pipe 11 is connected with an atomizing nozzle 13 and inserted into the battery box;
the three-way valve 12 can switch the liquid flowing out from the liquid cooling plate liquid outlet pipe 9 to flow into the liquid spraying pipe 11 or directly discharge from the liquid discharging pipe 10;
when the temperature of the battery core is normal, the battery box starts a liquid cooling heat dissipation mode, the liquid cooling plate 7 positioned below the battery core module 1 dissipates heat and cools the battery core, liquid flows into the liquid cooling plate from a liquid inlet pipe 8 and flows to a liquid outlet pipe of the cooling liquid through a liquid circulation pipeline 14, an outlet on a three-way valve 12 connected with a liquid spraying pipe 11 is closed, an outlet connected with a liquid discharge pipe 10 is opened, finally the liquid flows out from the liquid discharge pipe 10 through the three-way valve 12, and the heat of the battery core flows out of the liquid flowing in the liquid discharge pipe along with the liquid in the process; when the temperature of the battery core is abnormal, the battery box starts a fire-fighting mode, liquid enters the liquid spraying pipe 11 through the three-way valve 12 in a switching mode and is converted into fog-shaped spraying through the atomizing nozzle 13, and the battery core is fully cooled.
The three-way valve 12 is an electromagnetic three-way valve 12 controlled by electrifying, and the switching of the passage is realized by controlling the on-off of the current.
The smoke monitoring module 3 is connected with the battery control module 2 through an electric wire, and the battery control module 2 is connected with the three-way valve 12 through a signal wire.
The battery box fire-fighting modes comprise the following two modes;
one of them, battery control module 2 can monitor the temperature and the voltage of electric core, works as when battery monitoring module monitors that electric core temperature is higher or voltage is unusual, when the cooling demand can't be accomplished to liquid cooling board 7, battery control module 2 will make three-way valve 12 switch the liquid flow direction, makes liquid get into in spray tube 11, close the export of being connected with liquid discharge pipe 10 on the three-way valve 12 promptly, open the export of being connected with spray tube 11 on the three-way valve 12, final liquid sprays on electric core through atomizer 13, and after liquid contact high temperature electric core after the atomizing, takes away the heat that electric core distributed out through the phase transition, reduces the risk that electric core catches fire.
Secondly, smoke monitoring module 3 inserts in battery control module 2, work as smoke monitoring module 3 monitors smog and also feeds back the signal to battery control module 2, battery control module 2 will make three-way valve 12 switch liquid flow direction also, makes the follow the liquid that liquid cooling board drain pipe 9 flows into in hydrojet 11, the fluid sprays the electric core with atomized liquid on large area through atomizer 13 to extinguish the naked light rapidly.
The liquid circulation pipeline 14 is in an S shape, the liquid cooling plate 7 has a relatively high liquid cooling area due to the S-shaped circulation pipeline, heat emitted by the battery cell is transferred to flowing liquid and flows out along with the liquid, and therefore the heat dissipation efficiency of the battery cell is improved.
The battery box upper cover 4 is detachably connected with the battery box bottom shell 5, and the battery box upper cover 4 can be opened when a battery core is placed or taken or the battery box is overhauled.
The battery box front plate 6 is detachably connected to the battery box bottom shell 5.
The battery control module 2 is located on the battery box front plate 6.
The smoke monitoring module 3 is located below the upper cover 4 of the battery box and connected with the upper cover 4 of the battery box, the upper cover 4 of the battery box is perforated, and the smoke control module is fixed on the upper cover 4 of the battery box through screws.
The liquid flowing through the liquid flowing pipeline 14 is perfluorohexanone.
The liquid cooling liquid and the fire fighting liquid used in the invention are stored in the pipeline in liquid state at normal temperature, and when the temperature of the battery cell is higher, the liquid is sprayed out through the atomizing nozzle 13 and contacts with the high-temperature battery cell to vaporize and absorb heat. The liquid cooling liquid and the fire fighting liquid are insulated and nontoxic, and cannot damage the battery cell. The common use is perfluorohexanone, the boiling point of which is 49 ℃, and the common use is not limited to perfluorohexanone and can meet the requirement.
The embodiment provides a battery box liquid cooling heat dissipation and fire fighting system, which comprises a battery box, a battery cell module, a liquid cooling part, a fire fighting part, a battery control module and a smoke monitoring module, wherein a liquid cooling plate positioned below the battery cell module can dissipate heat and cool heat generated when a battery cell normally works; through in inserting smog monitoring module into battery control module, can share the temperature and the voltage monitoring function among the battery control module, save the temperature and the voltage control in the fire control mode, utilize the smog monitoring module of self to monitor when taking place smog for judge more accurately.

Claims (8)

1. A battery box liquid cooling heat dissipation and fire fighting system is characterized by comprising a battery box, a battery cell module (1), a liquid cooling part, a fire fighting part, a battery control module (2) and a smoke monitoring module (3);
the battery box is of a hollow cuboid structure, the battery box comprises a battery box upper cover (4) and a battery box bottom shell (5), the battery box bottom shell (5) is of a hollow cuboid structure with an upper end opening, the battery box upper cover (4) is located on the upper portion of the battery box and is in adaptive connection with the upper end opening of the battery box bottom shell (5), and the front portion of the battery box bottom shell (5) is provided with a battery box front plate (6);
the battery cell module (1) is positioned inside the battery box;
the liquid cooling part comprises a liquid cooling plate (7), a liquid cooling plate liquid inlet pipe (8), a liquid cooling plate liquid outlet pipe (9) and a liquid discharge pipe (10);
the fire-fighting part comprises a liquid spraying pipe (11), a three-way valve (12) and an atomizing nozzle (13);
liquid cold plate (7) are located the below of electricity core module (1), built-in liquid circulation pipeline (14) in liquid cold plate (7), liquid circulation pipeline (14) are the S type, liquid cold plate feed liquor pipe (8) and liquid cold plate drain pipe (9) are located same one side of liquid cold plate (7), the both ends of liquid circulation pipeline (14) are connected with liquid cold plate feed liquor pipe (8) and liquid cold plate drain pipe (9) respectively, the end of liquid cold plate drain pipe (9) sets up three-way valve (12), and the three export of three-way valve (12) is connected with liquid cold plate drain pipe (9), liquid discharge pipe (10) and hydrojet pipe (11) respectively, the other end and the atomizer (13) of hydrojet pipe (11) are connected and are inserted inside the battery box, atomizer (13) are located the top of electricity core module (1).
2. The liquid-cooled heat dissipation and fire fighting system for battery boxes according to claim 1, wherein the three-way valve (12) is an electromagnetic three-way valve (12) controlled by power-on, and the switching of the passages is realized by controlling the on-off of the current.
3. The battery box liquid-cooled heat dissipation and fire fighting system according to claim 2, wherein the smoke monitoring module (3) is connected to the battery control module (2) through an electric wire, and the battery control module (2) is connected to the three-way valve (12) through a signal line.
4. The battery box liquid-cooled heat dissipation and fire protection system of claim 1, wherein the battery box top cover (4) is removably attached to the battery box bottom housing (5).
5. The battery box liquid-cooled heat dissipation and fire protection system of claim 1, wherein the battery control module (2) is located on the battery box front plate (6).
6. The battery box liquid-cooled heat dissipation and fire fighting system according to claim 1, wherein the smoke monitoring module (3) is located below the battery box upper cover (4) and is connected to the battery box upper cover (4).
7. The battery box liquid-cooled heat dissipation and fire protection system of claim 1, wherein the battery box front plate (6) is removably attached to the battery box bottom housing (5).
8. The battery box liquid-cooled heat dissipation and fire protection system of claim 1, wherein the liquid flowing through the liquid flow conduit (14) is perfluorohexanone.
CN202110046410.XA 2021-01-13 2021-01-13 Battery box liquid cooling heat dissipation and fire extinguishing system Active CN112820978B (en)

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