CN112652838A - Integrated structure for delaying thermal runaway - Google Patents
Integrated structure for delaying thermal runaway Download PDFInfo
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- CN112652838A CN112652838A CN202011538574.6A CN202011538574A CN112652838A CN 112652838 A CN112652838 A CN 112652838A CN 202011538574 A CN202011538574 A CN 202011538574A CN 112652838 A CN112652838 A CN 112652838A
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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
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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
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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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
- H01M10/615—Heating or keeping warm
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/65—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
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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
- H01M10/65—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
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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
- H01M10/65—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
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention relates to the technical field of thermal runaway of energy delaying monomers, and discloses an integrated structure for delaying thermal runaway, which comprises a liquid cooling plate, a plurality of energy monomers and a protection plate, wherein a liquid cooling cavity is limited in the liquid cooling plate, cooling liquid containing fire extinguishing agents is arranged in the liquid cooling cavity, a placement groove is formed in the middle of the liquid cooling plate, the energy monomers are bonded in the placement groove at intervals side by side, two adjacent energy monomers are arranged face to face, an explosion-proof valve is arranged on each energy monomer and is opposite to the liquid cooling plate, the explosion-proof valve can break the liquid cooling plate to enable cooling liquid to flow out when the energy monomers are in thermal runaway, the protection plate is arranged at the top end of each energy monomer, a plurality of grids are arranged on the protection plate, two adjacent grids form a separation groove, and one end of each energy monomer can extend into one separation groove. The integrated structure for delaying thermal runaway can effectively delay the thermal runaway of other energy monomers, and the safety of the integrated structure for delaying thermal runaway is improved.
Description
Technical Field
The invention relates to the technical field of thermal runaway of energy delaying monomers, in particular to an integrated structure for delaying thermal runaway.
Background
In the prior art, new energy automobiles are widely applied with the advantages of high energy efficiency, zero emission, no pollution, high specific energy, low noise, high reliability and the like. The power battery system is used as a main energy storage component of the new energy battery car and mainly ensures the functions of low-speed running of the whole car, braking energy recovery, energy regulation of a hybrid power engine system and the like. The power battery system comprises a battery assembly containing a plurality of energy monomers, and the existing battery assembly cannot delay thermal runaway of other energy monomers when a certain energy monomer is thermally runaway, so that the safety performance is poor.
Disclosure of Invention
Based on the above, the invention aims to provide an integrated structure for delaying thermal runaway, which can effectively delay the thermal runaway of other energy monomers and improve the safety of the integrated structure for delaying thermal runaway.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated structure for retarding thermal runaway comprising: the liquid cooling plate is internally provided with a liquid cooling cavity, cooling liquid containing fire extinguishing agents is arranged in the liquid cooling cavity, and a placing groove is formed in the middle of the liquid cooling plate; the energy monomers are bonded in the placing groove side by side at intervals, two adjacent energy monomers are arranged face to face, each energy monomer is provided with an explosion-proof valve, the explosion-proof valve is arranged right opposite to the liquid cooling plate, and the explosion-proof valve can break through the liquid cooling plate to enable cooling liquid to flow out when the energy monomers are out of control due to heat; the guard plate sets up energy free top just be equipped with a plurality of grid on the guard plate, adjacent two the grid forms and separates the groove, every energy free one end can stretch into one separate the inslot.
As an optimal scheme of the integrated structure for delaying thermal runaway, the integrated structure for delaying thermal runaway further comprises a box body fixedly arranged on the liquid cooling plate, the liquid cooling plate is located in the box body, a liquid inlet channel and a liquid outlet channel are arranged on the box body, and the liquid inlet channel and the liquid outlet channel are communicated with the liquid cooling cavity.
As a preferable scheme of the integrated structure for delaying thermal runaway, the bottom of the box body is arranged in an open manner, and the lower end of the box body is lower than the bottom surface of the liquid cooling plate.
As a preferred scheme of an integrated structure for delaying thermal runaway, two explosion-proof valves are arranged on each energy unit and are respectively located at two opposite ends of the energy unit.
As a preferred scheme of an integrated structure for delaying thermal runaway, the energy monomer is bonded with the bottom of the placing groove through heat conducting glue, a heat conducting layer is coated on the side face of the energy monomer, and the heat conducting layer is clamped between the energy monomer and the side wall of the placing groove.
As an optimal scheme of an integrated structure for delaying thermal runaway, protrusions are arranged on the bottom surface, away from the energy monomer, of the liquid cooling plate, the inner portion of the liquid cooling plate is right opposite to the protruding area to form a containing groove, and the containing groove is communicated with the liquid cooling cavity.
As a preferable aspect of the integrated structure in which thermal runaway is delayed, the specific heat capacity of the coolant is greater than or equal to 3000J/(kg · K).
As a preferred scheme of an integrated structure for delaying thermal runaway, each energy monomer is bonded in one partition groove, the number of the protection plates is two, and the two protection plates are respectively located at two ends of the energy monomer in the length direction.
As a preferable scheme of the integrated structure for delaying thermal runaway, an insulating protective layer is arranged on one side, away from the energy unit, of the protective plate.
As a preferable scheme of the integrated structure for delaying thermal runaway, the insulation protection layer includes at least one of a mica layer, a melamine layer, a polyurethane layer, and a boron nitride layer.
The invention has the beneficial effects that: the invention discloses an integrated structure for delaying thermal runaway.A cooling liquid in a liquid cooling plate can cool an energy monomer when the temperature of the energy monomer is higher and can also heat the energy monomer when the temperature of the energy monomer is lower, so that the influence of the external temperature on the energy monomer is avoided, when one energy monomer is out of thermal runaway, an explosion-proof valve on the energy monomer can break through the liquid cooling plate, the cooling liquid in the liquid cooling plate flows into a placing groove, the energy monomer and other energy monomers can be cooled due to the relatively lower temperature of the cooling liquid, in addition, the cooling liquid can play a role of extinguishing a fire due to the fact that the cooling liquid contains a fire extinguishing agent, so that other energy monomers are further protected, the cooling liquid in the liquid cooling plate can also play a role of heating or cooling the energy monomer when the energy monomer is not out of thermal runaway, and the adjacent energy monomers can play a role of protecting other energy monomers due to the interval distribution, thereby achieving the purpose of further delaying thermal runaway.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic diagram of an integrated structural abatement enclosure for retarding thermal runaway provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a guard plate and a partial energy cell provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of an integrated structure for retarding thermal runaway provided by an embodiment of the invention in one direction;
FIG. 4 is a cross-sectional view of an integrated structure for retarding thermal runaway provided by an embodiment of the present invention;
FIG. 5 is a schematic view of an integrated structure for retarding thermal runaway in another direction according to an embodiment of the invention.
In the figure:
1. a liquid-cooled plate; 101. a liquid-cooled chamber; 102. a placement groove; 11. a protrusion; 110. accommodating grooves;
21. an energy monomer; 22. an explosion-proof valve;
3. a protection plate; 30. separating the grooves; 31. a grid;
4. a box body; 41. a liquid inlet pipe; 42. a liquid outlet pipe.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present embodiment provides an integrated structure for delaying thermal runaway, as shown in fig. 1 to 4, comprising a liquid-cooled panel 1, a plurality of energy monomer 21 and guard plate 3, inject out liquid cold chamber 101 in the liquid cold plate 1, be equipped with the coolant liquid that contains the fire extinguishing agent in the liquid cold chamber 101, the middle part of liquid cold plate 1 forms standing groove 102, a plurality of energy monomer 21 interval and bond side by side in standing groove 102, two adjacent energy monomers 21 set up face to face, all be equipped with explosion-proof valve 22 on every energy monomer 21, explosion-proof valve 22 is just to liquid cold plate 1 setting, explosion-proof valve 22 can break liquid cold plate 1 so that the coolant liquid flows out when energy monomer 21 takes place the thermal runaway, guard plate 3 sets up and is equipped with a plurality of grid 31 on energy monomer 21's top and guard plate 3, two adjacent grid 31 form separating tank 30, one end of every energy monomer 21 can stretch into in one separating tank 30, grid 31 plays fixed and spacing each energy monomer 21 effect.
The fire extinguishing agent contained in the cooling liquid of the embodiment belongs to the prior art, and the embodiment is not limited, and is specifically selected according to actual needs. It should be noted that, as shown in fig. 2, the length of the grid 31 of this embodiment is longer, and the grid 31 with the longer length can ensure that the adjacent energy cells 21 have better insulating performance, and when one energy cell 21 is thermally runaway, the other energy cells 21 adjacent to the energy cell 21 can delay the occurrence of the thermal runaway, so that the insulating protection capability of the energy cell 21 is greatly improved.
Specifically, the energy cells 21 of the present embodiment are rectangular battery cells, and a plurality of energy cells 21 form a battery module. In other embodiments, the energy cell 21 may also have other structures capable of generating thermal runaway, and the shape of the energy cell 21 is not limited to the rectangular parallelepiped shape of this embodiment, and is specifically selected according to actual needs. Each energy unit 21 of the present embodiment is provided with two explosion-proof valves 22, and the two explosion-proof valves 22 are respectively located at two opposite ends of the energy unit 21. Every explosion-proof valve 22 all sets up to liquid cooling board 1, when an energy monomer 21 takes place the thermal runaway, explosion-proof valve 22 is by rushing out and explosion-proof valve 22 can break through liquid cooling board 1, the coolant liquid in the liquid cooling chamber 101 of liquid cooling board 1 flows, because contain the fire extinguishing agent in the coolant liquid, therefore, the fire that the energy monomer 21 thermal runaway produced can be watered out by the coolant liquid, energy monomer 21's insulating protective capacity has greatly been improved, the large voltage arc phenomenon that draws that causes because insulating failure between the different battery module has been delayed, the thermal runaway's of the battery module that the large voltage caused phenomenon has been avoided.
The integrated form structure that delays thermal runaway that this embodiment provided, the coolant liquid of liquid-cooled plate 1 can cool down energy monomer 21 when its temperature is higher, can also heat it when energy monomer 21 temperature is lower, the influence of ambient temperature to energy monomer 21 has been avoided, when a certain energy monomer 21 takes place thermal runaway, explosion-proof valve 22 on this energy monomer 21 can break through liquid-cooled plate 1, the coolant liquid in the liquid-cooled plate 1 flows into standing groove 102 in, because the temperature of coolant liquid is lower relatively, can play the effect of cooling this energy monomer 21 and other energy monomers 21, in addition because contain the fire extinguishing agent in the coolant liquid, make the coolant liquid can play the effect of putting out a fire, thereby further protect other energy monomers 21. The cooling liquid in the liquid cooling plate 1 can also play a role in heating or cooling the energy monomers 21 when the energy monomers 21 are not in thermal runaway, and the adjacent energy monomers 21 are distributed at intervals to play a role in protecting other energy monomers 21, so that the purpose of delaying the thermal runaway is achieved.
As shown in fig. 3, the integrated structure for delaying thermal runaway of this embodiment further includes a box 4 fixedly disposed on the liquid cooling plate 1, the liquid cooling plate 1 is disposed in the box 4, the box 4 is provided with a liquid inlet channel and a liquid outlet channel, and both the liquid inlet channel and the liquid outlet channel are communicated with the liquid cooling chamber 101. Specifically, box 4 welds on liquid cooling board 1, and this kind of connected mode has effectively strengthened the intensity of delaying thermal runaway's integrated form structure, and in case take place the thermal runaway of energy monomer 21, liquid cooling board 1 is broken through, and box 4 can also effectively resist the impact of thermal runaway, further delays battery thermal runaway. The liquid cooling plate 1 of this embodiment sets up and the liquid cooling plate 1 arranges the middle part at box 4 with the integral type of box 4, can effectively sparingly delay the space availability factor of thermal runaway's integrated form structure.
As shown in fig. 3, the box 4 of this embodiment is further provided with a liquid inlet pipe 41 and a liquid outlet pipe 42, wherein the liquid inlet pipe 41 is communicated with the liquid inlet channel, and the liquid outlet pipe 42 is communicated with the liquid outlet channel. Specifically, when the external environment temperature is low and the energy monomer 21 needs to be heated, the cooling liquid with higher temperature is introduced into the liquid cooling cavity 101 through the liquid inlet pipe 41 and the liquid inlet channel, the temperature of the cooling liquid after the energy monomer 21 is heated is reduced, and the cooling liquid with lower temperature is discharged from the liquid outlet pipe 42 through the liquid outlet channel; when the energy monomer 21 is at a high temperature and needs to be cooled, the cooling liquid with a low temperature is introduced into the liquid cooling cavity 101 through the liquid inlet pipe 41 and the liquid inlet channel, the temperature of the cooling liquid after cooling the energy monomer 21 is increased, and the cooling liquid with a high temperature is discharged from the liquid outlet pipe 42 through the liquid outlet channel.
For better heating or cooling of the energy cell 21, the specific heat capacity of the coolant is required to be greater than or equal to 3000J/(kg · K). Specifically, the greater the specific heat capacity of the coolant, the less mass of the coolant is required to absorb or emit the same amount of heat, that is, the greater the specific heat capacity of the coolant, the less total mass is required to raise or lower the energy cells 21 to a specified temperature, which is more advantageous for lightweight design of the integrated structure that delays thermal runaway. In other embodiments, if the weight of the integrated structure for delaying thermal runaway is not limited, the specific heat capacity of the cooling liquid may be less than 3000J/(kg · K), which is specifically selected according to actual needs.
As shown in fig. 4, the bottom of the case 4 of the present embodiment is open, and the lower end of the case 4 is lower than the bottom surface of the liquid cooling plate 1. Specifically, the upper end face of the bottom frame of the box 4 of the present embodiment is flush with the bottom face of the liquid cooling plate 1, and the bottom of the box 4 is open. That is to say, the case 4 of the present embodiment has no bottom plate, which is compared with the case 4 with a bottom plate, the energy density of the integrated structure for delaying thermal runaway per unit mass of the present embodiment is larger, which is beneficial to the lightweight setting of the integrated structure for delaying thermal runaway, and in addition, the case 4 without a bottom plate can also improve the heat dissipation performance of the liquid cooling plate 1, so that the liquid cooling plate 1 is in full contact with the external environment. The lower extreme of box 4 is less than the bottom surface of liquid cold plate 1 and can plays the effect of protection liquid cold plate 1, if the lower extreme of box 4 is higher than the bottom surface of liquid cold plate 1 with the bottom surface parallel and level of liquid cold plate 1 or the lower extreme of box 4, other spare parts have can collide liquid cold plate 1 to lead to liquid cold plate 1 to take place to damage, increased the probability that liquid cold plate 1 damaged.
The energy cells 21 of the present embodiment are bonded to the bottom of the placement groove 102 by a heat conductive adhesive, and a heat conductive layer (not shown) is coated on the side surfaces of the energy cells 21 and sandwiched between the energy cells 21 and the side walls of the placement groove 102. Energy monomer 21 bonds through heat-conducting glue and can guarantee to have better heat conductivility between energy monomer 21 and the liquid cooling board 1 on the liquid cooling board 1, the heat-conducting layer on the side of energy monomer 21 can further improve the heat conductivility between energy monomer 21 and the liquid cooling board 1, guarantee the heat transfer around the liquid cooling board 1 and between the energy monomer 21, promote the temperature management ability of energy monomer 21, the response speed of the integrated form structure that delays thermal runaway is improved, realize the evenly distributed of the temperature of energy monomer 21, promote the work efficiency who delays the integrated form structure of thermal runaway.
The middle part of the liquid cooling plate 1 of this embodiment directly forms the standing groove 102 of placing the energy monomer 21, and the heat conduction layer on the side of the energy monomer 21 presss from both sides and locates between the lateral wall of energy monomer 21 and standing groove 102, has increased the heat transfer area between liquid cooling plate 1 and the energy monomer 21, has accelerated the programming rate and the cooling rate of energy monomer 21 for the structure that delays the integrated form structure of thermal runaway is comparatively compact, has increased overall structure's space utilization, does benefit to overall structure's miniaturization setting.
As shown in fig. 4 and fig. 5, the protrusion 11 is disposed on the bottom surface of the liquid cooling plate 1 away from the energy unit 21, the accommodating groove 110 is formed in the area of the liquid cooling plate 1 facing the protrusion 11, and the accommodating groove 110 is communicated with the liquid cooling chamber 101. The surface area of the liquid cooling plate 1 can be increased by the additionally arranged protrusions 11, the volume of the liquid cooling cavity 101 can be increased by the accommodating grooves 110 formed by the protrusions 11, so that the heat exchange capacity of the liquid cooling plate 1 is improved, meanwhile, the strength of the liquid cooling plate 1 can be enhanced by the protrusions 11, the probability of bottom surface damage of the liquid cooling plate 1 is reduced, and the service life of the liquid cooling plate 1 is prolonged.
Each energy unit 21 of the embodiment is bonded in one partition groove 30, as shown in fig. 3, the number of the protection plates 3 is two, the two protection plates 3 are respectively located at two ends of the energy unit 21 in the length direction, and each protection plate 3 is bonded at the upper end of the energy unit 21. Wherein, an insulating protective layer (not shown in the figure) is arranged on one side of the protective plate 3 departing from the energy unit 21. Specifically, the insulation protection layer includes at least one of a mica layer, a melamine layer, a polyurethane layer, and a boron nitride layer. In other embodiments, the insulating protection layer is not limited to this limitation of the present embodiment, and may also be made of other insulating materials, which are specifically set according to actual needs. In other embodiments, the protection plate 3 is not limited to the embodiment of this embodiment, and the protection plate 3 can also be clamped on the upper end of the energy unit 21, and is specifically arranged according to actual needs.
Specifically, when a certain energy unit 21 is thermally out of control, the protection plate 3 has the following three protection effects on other energy units 21: 1. the protection plate 3 isolates open fire generated by thermal runaway of the energy monomer 21 and protects other energy monomers 21; 2. after the energy monomer 21 is out of control thermally, because the two anti-explosion valves 22 at the two ends of the energy monomer 21 are flushed, the two ends of the energy monomer 21 spray high-temperature and high-pressure solid-liquid mixed objects, the surface temperature of the energy monomer 21 is high, and the protection plate 3 can effectively isolate the temperature conduction; 3. through the guard plate 3 that has insulating function of the both ends parcel at energy monomer 21, can greatly promote energy monomer 21's insulating protective capability, delay the high voltage arc discharge phenomenon that produces the insulation failure and bring between the different battery module, avoid the extreme thermal runaway phenomenon that the super large voltage caused.
The integrated structure for delaying thermal runaway of the embodiment has the advantages of obvious thermal runaway effect, high space utilization rate, compact structure, high safety performance and good cooling effect.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An integrated structure for retarding thermal runaway, comprising:
the liquid cooling plate (1) is internally provided with a liquid cooling cavity (101), cooling liquid containing fire extinguishing agents is arranged in the liquid cooling cavity (101), and a placing groove (102) is formed in the middle of the liquid cooling plate (1);
the energy monomers (21) are bonded in the placing groove (102) at intervals side by side, two adjacent energy monomers (21) are arranged face to face, each energy monomer (21) is provided with an explosion-proof valve (22), the explosion-proof valve (22) is arranged right opposite to the liquid cooling plate (1), and the explosion-proof valve (22) can burst the liquid cooling plate (1) to enable cooling liquid to flow out when the energy monomers (21) are thermally out of control;
protection plate (3), set up and be in the top of energy monomer (21) just be equipped with a plurality of grid (31), adjacent two on protection plate (3) grid (31) form and separate groove (30), every the one end of energy monomer (21) can stretch into one separate in groove (30).
2. The integrated structure for delaying thermal runaway according to claim 1, further comprising a box body (4) fixedly arranged on the liquid cooling plate (1), wherein the liquid cooling plate (1) is located in the box body (4), the box body (4) is provided with a liquid inlet channel and a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are both communicated with the liquid cooling cavity (101).
3. The integrated structure for delaying thermal runaway according to claim 2, wherein the bottom of the tank (4) is open and the lower end of the tank (4) is lower than the bottom surface of the liquid-cooled plate (1).
4. The integrated structure for delaying thermal runaway according to claim 1, wherein two explosion-proof valves (22) are arranged on each energy cell (21), and the two explosion-proof valves (22) are respectively arranged at two opposite ends of the energy cell (21).
5. The integrated structure for delaying thermal runaway according to claim 1, wherein the energy cells (21) are bonded to the bottom of the placing groove (102) through a heat conducting glue, and the side surfaces of the energy cells (21) are coated with heat conducting layers which are sandwiched between the energy cells (21) and the side walls of the placing groove (102).
6. The integrated structure for delaying thermal runaway according to claim 1, wherein the bottom surface of the liquid-cooled plate (1) facing away from the energy unit (21) is provided with a protrusion (11), an area of the liquid-cooled plate (1) facing the protrusion (11) forms a receiving groove (110), and the receiving groove (110) is communicated with the liquid-cooled cavity (101).
7. The integrated structure for delaying thermal runaway of claim 1, wherein the specific heat capacity of the coolant is greater than or equal to 3000J/(kg-K).
8. The integrated structure for delaying thermal runaway according to claim 1, wherein each energy cell (21) is bonded in one of the slots (30), the number of the protection plates (3) is two, and the two protection plates (3) are respectively located at two ends of the energy cell (21) in the length direction.
9. Integrated structure for slowing thermal runaway as claimed in claim 1, characterised in that the side of the protection plate (3) facing away from the energy cell (21) is provided with an insulating protection.
10. The integrated structure for delaying thermal runaway of claim 9, wherein the insulation protection layer comprises at least one of a mica layer, a melamine layer, a polyurethane layer, and a boron nitride layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011538574.6A CN112652838A (en) | 2020-12-23 | 2020-12-23 | Integrated structure for delaying thermal runaway |
| PCT/CN2021/134960 WO2022135098A1 (en) | 2020-12-23 | 2021-12-02 | Integrated structure for delaying thermal runaway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011538574.6A CN112652838A (en) | 2020-12-23 | 2020-12-23 | Integrated structure for delaying thermal runaway |
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| Publication Number | Publication Date |
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| CN112652838A true CN112652838A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011538574.6A Pending CN112652838A (en) | 2020-12-23 | 2020-12-23 | Integrated structure for delaying thermal runaway |
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| Country | Link |
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| CN (1) | CN112652838A (en) |
| WO (1) | WO2022135098A1 (en) |
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| WO2022135098A1 (en) | 2022-06-30 |
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Application publication date: 20210413 |