CN116565388A - Battery liquid cooling device and battery pack - Google Patents
Battery liquid cooling device and battery pack Download PDFInfo
- Publication number
- CN116565388A CN116565388A CN202310645714.7A CN202310645714A CN116565388A CN 116565388 A CN116565388 A CN 116565388A CN 202310645714 A CN202310645714 A CN 202310645714A CN 116565388 A CN116565388 A CN 116565388A
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- Prior art keywords
- battery
- cavity
- cooling
- liquid
- cooling liquid
- Prior art date
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- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 80
- 239000007788 liquid Substances 0.000 title claims abstract description 54
- 239000000110 cooling liquid Substances 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 9
- 239000002826 coolant Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- -1 etc.) Inorganic materials 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M10/04—Construction or manufacture in general
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a battery liquid cooling device and a battery pack, wherein a battery core is directly contacted with cooling liquid through a battery core fixing bracket, so that the cooling efficiency is improved, the cost is reduced, and through holes communicated with two shunt cavities are formed in two preset side surfaces of any battery core mounting part, so that both sides of each battery core mounted on the battery core mounting part can be uniformly cooled, and the cooling uniformity of the battery core is improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery liquid cooling device and a battery pack.
Background
Along with the improvement of the requirements of users on electric automobiles, the requirements of the whole automobile on the power characteristics and the quick charge performance of a power battery system are higher and higher, and the requirements on the thermal management design of the battery system are increased, so that the temperature equalization and the temperature control of the battery are finer and finer.
At present, most of vehicle-mounted heat management of new energy adopts air cooling and liquid cooling systems, and the air cooling is difficult to solve the problems of heat dissipation requirements, temperature uniformity and the like under the high-rate charging and discharging working condition, so that a liquid cooling mode becomes a focus of attention of engineers more and more liquid cooling systems are designed and developed. The common liquid cooling system is mainly used for traditional indirect cooling, and performs heat exchange between the internal cooling plate of the battery system and a liquid cooling medium of a cooling loop outside the system, so that heat generated by the battery cell is taken away. However, the indirect liquid cooling system has limited cooling capacity and cannot meet the high-rate high-temperature quick-charging working condition. Charging under high temperature conditions seriously affects the service life of the battery, and causes inconsistent attenuation of the battery of the system, inconsistent internal resistance of the battery and vicious circle.
Disclosure of Invention
The embodiment of the invention provides a battery liquid cooling device and a battery pack, which are used for improving cooling efficiency and reducing cost.
In a first aspect, embodiments of the present invention provide a battery liquid cooling apparatus, including:
the battery cell fixing bracket comprises a plurality of battery cell mounting parts and a cooling liquid cavity, wherein the battery cell mounting parts and the cooling liquid cavity are arranged at preset regular intervals;
the cooling liquid cavity comprises a cooling liquid input cavity, a cooling liquid output cavity and a plurality of diversion cavities, wherein the cooling liquid input cavity and the cooling liquid output cavity are oppositely arranged at two ends close to two side walls of the battery core fixing support, two ends of each diversion cavity are respectively communicated with the cooling liquid input cavity and the cooling liquid output cavity, at least part of each diversion cavity is mutually independent, a through hole communicated with the diversion cavity is formed in a preset side face of any battery core mounting part, the cooling liquid input cavity is used for inputting cooling liquid and diverting the cooling liquid to the plurality of diversion cavities, the plurality of diversion cavities are used for diverting the cooling liquid from one end of the cooling liquid input cavity to the cooling liquid output cavity, and the cooling liquid output cavity is used for collecting the cooling liquid in the plurality of cooling liquid diversion cavities and outputting the cooling liquid;
the battery cell mounting part is used for mounting at least part of areas of preset battery cells;
and the upper cover is fixedly connected with the battery cell fixing bracket.
In an embodiment, the cell fixing support comprises an upper support and a lower support which are matched, and the upper support and the lower support can be mutually covered to form a sealing structure.
In an embodiment, the upper cover is disposed on a side of the upper bracket away from the lower bracket, and the upper cover is used for fixing the upper bracket and the lower bracket.
In an embodiment, the upper cover and the upper bracket are integrally formed.
In an embodiment, the battery liquid cooling device further comprises a sealing ring, the upper bracket and the lower bracket are oppositely provided with sealing grooves, the sealing grooves are located on the periphery of the cooling liquid cavity, and the sealing ring is arranged in the sealing grooves.
In an embodiment, the upper bracket and/or the lower bracket is made of plastic.
In an embodiment, a pressure relief cavity is arranged at the bottom of the lower bracket, and the orthographic projection area of the pressure relief cavity at least covers all the battery cell mounting parts.
In an embodiment, a pressure release hole is formed in the bottom of each cell installation portion, the pressure release hole is communicated with the pressure release structure of the preset cell, and each pressure release hole is connected with the pressure release cavity.
In an embodiment, a pressure relief valve connected with the pressure relief cavity is arranged on the outer side of the bottom of the lower bracket.
In a second aspect, an embodiment of the present invention provides a battery pack, where the battery pack includes the battery liquid cooling device according to the first aspect and a battery cell embedded in the battery liquid cooling device, and the battery cell is in direct contact with the cooling liquid.
According to the battery liquid cooling device and the battery pack, the battery cells are directly contacted with the cooling liquid through the battery cell fixing support, so that the cooling efficiency is improved, the cost is reduced, and meanwhile, through holes communicated with the two shunt cavities are formed in two preset side surfaces of any battery cell mounting part, so that both sides of each battery cell mounted on the battery cell mounting part can be uniformly cooled, and the cooling uniformity of the battery cells is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional perspective view of a battery liquid cooling apparatus provided in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional top view of a battery liquid cooling apparatus provided in an embodiment of the present application;
FIG. 3 is a schematic enlarged partial cross-sectional view of a battery liquid cooling device according to an embodiment of the present application;
fig. 4 is a schematic longitudinal section view of a battery liquid cooling device provided in an embodiment of the present application.
Reference numerals:
10-a battery liquid cooling device; 101-a cell mounting portion; 1021-coolant input chamber; 1022-coolant outlet chamber; 1023-shunt chamber; 103-upper cover; 104-upper support; 105-lower rack; 106-a pressure release cavity; 107-a pressure relief hole; 20-cell.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the invention. In the present invention, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
At present, "new energy vehicle-mounted heat management mostly adopts air cooling and liquid cooling systems, and the air cooling is difficult to solve the problems of heat dissipation requirements, temperature uniformity and the like under the high-rate charging and discharging working condition, so that a liquid cooling mode becomes a focus of attention of engineers more and more liquid cooling systems are designed and developed. The common liquid cooling system is mainly used for traditional indirect cooling, and performs heat exchange between the internal cooling plate of the battery system and a liquid cooling medium of a cooling loop outside the system, so that heat generated by the battery cell is taken away. However, the indirect liquid cooling system has limited cooling capacity, cannot meet the high-rate high-temperature fast-charging working condition, and has larger battery temperature difference in order to reduce the highest temperature of the battery in the fast-charging process. Charging seriously influences the life-span of battery under high temperature condition, leads to system battery decay inconsistent, leads to battery internal resistance inconsistent, vicious circle ", and for this reason, this application embodiment provides a battery liquid cooling device and battery package to adopt no cooling plate technique, through electric core fixed bolster with electric core and coolant liquid direct contact, improve cooling efficiency, reduce cost, all be provided with simultaneously at two default sides of arbitrary electric core installation department with two the through-hole that the reposition of redundant personnel chamber is linked together for install in both sides of each electric core of electric core installation department can both even cooling, improved the cooling homogeneity of electric core, specific scheme please see the following detailed description.
It should be noted that, hereinafter, the terms "battery module," "battery element," "cell," and "battery pack" are used interchangeably and may refer to any of a variety of different rechargeable battery chemistries and configurations, including, but not limited to, lithium ion (e.g., lithium ion phosphate, lithium cobalt oxide, lithium iron phosphate, other lithium metal oxides, etc.), lithium ion polymer, nickel metal hydride, nickel cadmium, nickel hydrogen, nickel zinc, silver zinc, or other battery types/configurations. The term "electric vehicle" is used herein to refer to an all-electric vehicle, also known as an EV, a plug-in hybrid vehicle, also known as a PHEV, or a hybrid vehicle (HEV), wherein the hybrid vehicle employs multiple propulsion sources, one of which is an electric drive system. It should be understood that the same reference numerals are used throughout the several drawings to designate the same components or components of equivalent function, and various modifications to the preferred embodiments, general principles and features described herein will be apparent to those skilled in the art. Furthermore, the drawings are intended to be illustrative of the scope of the invention and are not to be taken as being drawn to scale.
Embodiments of the present invention are generally applicable to systems employing electric motors, and more particularly, but not exclusively, to electric vehicles employing multi-phase electric motors (e.g., induction motors). Electric vehicles use one or more stored energy sources, such as a battery pack, to provide electrical energy to the vehicle. The energy is at least partially used to propel the vehicle. The stored energy may also be used to provide energy needed by other vehicle systems, such as vehicle lighting, vehicle zonable heating, ventilation, and air conditioning (HVAC) systems, auxiliary control systems (e.g., sensors, displays, navigation systems, etc.), vehicle entertainment systems (e.g., radio, DVD, MP3, etc.), and the like. Conventional electric vehicles include passenger vehicles and vehicles designed to transport cargo, examples of which include passenger cars, trucks, electric bicycles, and recreational boats. Electric vehicles also include specialized work vehicles and carts, some of which may incorporate aerial work platforms such as forklifts, scissor lifts, lifting and/or crank arms, access cleaning systems, conveyor belts, and platform carriers.
Specifically, referring to fig. 1 to 4, fig. 1 is a schematic cross-sectional perspective view of a battery liquid cooling device provided in an embodiment of the present application, fig. 2 is a schematic cross-sectional top view of the battery liquid cooling device provided in an embodiment of the present application, fig. 3 is a schematic cross-sectional perspective and partial enlarged view of the battery liquid cooling device provided in an embodiment of the present application, and fig. 4 is a schematic longitudinal cross-sectional view of the battery liquid cooling device provided in an embodiment of the present application, where the battery pack includes a battery liquid cooling device 10 and a battery core 20 built in the battery liquid cooling device 10, and also includes a cooling liquid (not shown), where the battery core 20 is in direct contact with the cooling liquid, and the cooling liquid is recyclable.
In this embodiment, the cell 20 and the cooling liquid are semi-immersed, and it is understood that other trunk parts except the upper and lower ends of the cell 20 are immersed in the cooling liquid.
In the embodiment, considering insulation and heat exchange, the cooling liquid can be, for example, fluorinated liquid which is used as a cooling working medium with good insulation and good cooling effect, so that thermal runaway can be effectively reduced, and the overall safety of the battery pack is improved; it will be appreciated that in other embodiments, other insulating coolants may be used.
According to the battery pack provided by the invention, the battery cells 20 are directly contacted with the cooling liquid through the battery cell fixing support, so that the cooling efficiency is improved, the cost is reduced, and meanwhile, through holes communicated with the two shunt cavities 1023 are formed in two preset side surfaces of any battery cell mounting part 101, so that both sides of each battery cell 20 mounted on the battery cell mounting part 101 can be uniformly cooled, and the cooling uniformity of the battery cell 20 is improved.
In some embodiments of the present application, the battery liquid cooling device 10 may specifically include a battery cell fixing bracket, where the battery cell fixing bracket includes a plurality of battery cell mounting portions 101 and a cooling liquid cavity disposed at preset regular intervals; the cooling liquid cavity comprises a cooling liquid input cavity 1021, a cooling liquid output cavity 1022 and a plurality of diversion cavities 1023, the cooling liquid input cavity 1021 and the cooling liquid output cavity 1022 are oppositely arranged at two ends close to two side walls of the battery cell fixing support, two ends of each diversion cavity 1023 are respectively communicated with the cooling liquid input cavity 1021 and the cooling liquid output cavity 1022, at least part of each diversion cavity 1023 is mutually independent, a through hole communicated with the diversion cavity 1023 is arranged on a preset side surface of any battery cell mounting part 101, the depth of the through hole is smaller than the depth of the battery cell mounting part 101, the cooling liquid input cavity 1021 is used for inputting cooling liquid and diverting the cooling liquid to the plurality of diversion cavities 1023, the plurality of diversion cavities 1023 are used for diverting the cooling liquid from one end of the cooling liquid input cavity 1021 to the cooling liquid output cavity 1022, and the cooling liquid output cavity 1022 is used for collecting the cooling liquid in the plurality of cooling liquid diversion cavities 1023 and outputting the cooling liquid; the cell mounting part 101 is used for mounting at least part of the area of the preset cell 20; and the upper cover 103 is fixedly connected with the battery cell fixing bracket and used for fixing the battery cell fixing bracket.
Among the above-mentioned "the preset side surfaces of the arbitrary battery cell mounting portion 101 are provided with the through holes that are communicated with the shunt cavity 1023", the preset side surfaces may specifically be one, two, and more than two, such as three and four, and the application prefers two, as shown in fig. 2, the two side surfaces are symmetrically arranged, and it should be noted that when the preset side surfaces are two, then the two preset side surfaces of the arbitrary battery cell mounting portion 101 are all provided with the through holes that are communicated with the two shunt cavities 1023.
The preset rule may be set by adopting a layout rule as shown in fig. 2, specifically, the layout rule is that all adjacent cell mounting portions 101 are arranged in a staggered manner, and two cell mounting portions 101 spaced by one cell mounting portion 101 are symmetrical to each other, so that the contact area between the shunt cavity 1023 and the cell 20 is larger, and the cooling efficiency is improved.
In the foregoing "the cell mounting portion 101 is used for mounting at least a partial area of the preset cell 20", the partial area is a trunk area of the cell, and it can be understood that both the top and the bottom of the cell are sealed, so that the cooling liquid cannot permeate out, that is, the application adopts a semi-submerged cooling scheme.
As shown in fig. 3, each cell installation part comprises a cavity for installing a cell, wherein the shape and the size of the cavity are matched with those of the cell, and the cavity is cylindrical; the through hole is formed on the side surface adjacent to the shunt cavity; specifically, the arrangement modes of the cell installation parts in each row are the same, the arrangement modes of the cell installation parts in each row are staggered, and specifically, the battery liquid cooling device can comprise a plurality of cell installation parts in each row, the specific number is not limited, and the number and the density of the cells can be referred to.
According to the battery liquid cooling device 10 provided by the invention, the battery cells 20 are directly contacted with the cooling liquid through the battery cell fixing support, so that the cooling efficiency is improved, the cost is reduced, and meanwhile, through holes communicated with the two shunt cavities 1023 are formed in two preset side surfaces of any battery cell mounting part 101, so that both sides of each battery cell 20 mounted on the battery cell mounting part 101 can be uniformly cooled, and the cooling uniformity of the battery cell 20 is improved.
In order to ensure the cooling uniformity of the battery liquid cooling device 10, in some embodiments of the present application, the dimensions of the respective flow splitting cavities 1023 are the same, specifically, the curve shape, length and width of each flow splitting cavity 1023 are the same, so that the flow rate and flow velocity of the cooling liquid in each flow splitting cavity 1023 in unit time are the same, the carried heat is the same, and the thermal uniformity is good.
To facilitate assembly of the battery cell 20, in some embodiments of the present application, the battery cell fixing support includes an upper support 104 and a lower support 105 that are adapted, and the upper support 104 and the lower support 105 may be mutually covered to form a sealing structure.
In order to improve the structural stability of the cell fixing support, in some embodiments of the present application, the upper cover 103 is disposed on a side of the upper support 104 away from the lower support 105, and the upper cover 103 is used for fixing the upper support 104 and the lower support 105, where a material of the upper cover 103 may be a steel plate with higher strength.
In order to reduce the structural complexity and cost of the battery liquid cooling device 10, in some embodiments of the present application, the upper cover 103 and the upper bracket 104 may be made of plastic with the same material, and the upper cover 103 and the upper bracket 104 are integrally formed.
In order to improve the tightness of the battery liquid cooling device 10, in some embodiments of the present application, the battery liquid cooling device 10 further includes a sealing ring (not shown), and the upper bracket 104 and the lower bracket 105 are provided with sealing grooves (not shown) opposite to each other, where the sealing grooves are located at the periphery of the cooling liquid cavity, and the sealing ring is disposed in the sealing grooves.
In some embodiments of the present application, the upper bracket 104 and/or the lower bracket 105 are made of plastic, so that the plastic is selected as the upper bracket 104 and the lower bracket 105 of the battery cell fixing bracket, which is convenient for molding, and the complexity of the preparation process and the preparation cost can be effectively reduced on the premise of ensuring the structural stability of the battery cell fixing bracket.
In some embodiments of the present application, the bottom of the lower support 105 is provided with a pressure release cavity 106, and the orthographic projection area of the pressure release cavity 106 at least covers all the cell installation parts 101, so, by designing the pressure release cavity 106 at the bottom of the cell 20, the smooth pressure release of the high-temperature combustible gas sprayed by the cell 20 is ensured, and explosion is prevented.
In some embodiments of the present application, the bottom of each cell mounting portion 101 is provided with a pressure relief hole 107, where the pressure relief hole 107 is communicated with a pressure relief structure of the preset cell 20, each pressure relief hole 107 is connected with the pressure relief cavity 106, and the bottom of the pressure relief hole 107 may be circular, where the bottom shapes of the pressure relief hole 107 and the cell 20 may be concentric circles, and the radius of the pressure relief hole 107 is smaller than the radius of the bottom of the cell 20. In this way, the pressure relief hole 107 ensures connectivity between the cell 20 and the pressure relief cavity 106.
In some embodiments of the present application, a pressure release valve (not shown) connected to the pressure release chamber 106 is disposed on the outer side of the bottom of the lower support 105, so that when the pressure release chamber 106 reaches a certain pressure, the high-temperature combustible gas sprayed from the battery cell 20 is smoothly released through the pressure release valve, and explosion is prevented.
The foregoing has outlined rather broadly the more detailed description of embodiments of the invention, wherein the principles and embodiments of the invention are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.
Claims (10)
1. A battery liquid cooling apparatus, comprising:
the battery cell fixing bracket comprises a plurality of battery cell mounting parts and a cooling liquid cavity, wherein the battery cell mounting parts and the cooling liquid cavity are arranged at preset regular intervals;
the cooling liquid cavity comprises a cooling liquid input cavity, a cooling liquid output cavity and a plurality of diversion cavities, wherein the cooling liquid input cavity and the cooling liquid output cavity are oppositely arranged at two ends close to two side walls of the battery core fixing support, two ends of each diversion cavity are respectively communicated with the cooling liquid input cavity and the cooling liquid output cavity, at least part of each diversion cavity is mutually independent, a through hole communicated with the diversion cavity is formed in a preset side face of the battery core installation part, the cooling liquid input cavity is used for inputting cooling liquid and diverting the cooling liquid to the plurality of diversion cavities, the plurality of diversion cavities are used for diverting the cooling liquid from one end of the cooling liquid input cavity to the cooling liquid output cavity, and the cooling liquid output cavity is used for collecting the cooling liquid in the plurality of cooling liquid diversion cavities and outputting the cooling liquid;
the battery cell mounting part is used for mounting at least part of areas of preset battery cells;
and the upper cover is fixedly connected with the battery cell fixing bracket.
2. The battery liquid cooling device of claim 1, wherein the cell fixing support comprises an upper support and a lower support which are matched, and the upper support and the lower support can be mutually covered to form a sealing structure.
3. The battery liquid cooling device according to claim 2, wherein the upper cover is provided on a side of the upper bracket away from the lower bracket, and the upper cover is used for fixing the upper bracket and the lower bracket.
4. The battery liquid cooling apparatus of claim 3, wherein the upper cover and the upper bracket are of an integrally formed structure.
5. The battery liquid cooling device according to any one of claims 2-4, further comprising a sealing ring, wherein the upper bracket and the lower bracket are provided with sealing grooves opposite to each other, the sealing grooves are located at the periphery of the cooling liquid cavity, and the sealing ring is disposed in the sealing grooves.
6. The battery liquid cooling apparatus according to any one of claims 2 to 4, wherein the upper bracket and/or the lower bracket is made of plastic.
7. The battery liquid cooling device according to any one of claims 2 to 4, wherein a pressure relief cavity is provided at the bottom of the lower bracket, and the orthographic projection area of the pressure relief cavity covers at least all of the cell mounting portions.
8. The battery liquid cooling device according to claim 7, wherein a pressure relief hole is formed in the bottom of each cell mounting portion, the pressure relief hole is communicated with the pressure relief structure of the preset cell, and each pressure relief hole is connected with the pressure relief cavity.
9. The battery liquid cooling device according to any one of claims 8, wherein a pressure relief valve connected to the pressure relief chamber is provided on the bottom outside of the lower bracket.
10. A battery pack comprising the battery liquid cooling device according to any one of claims 1 to 9 and a battery cell built into the battery liquid cooling device, the battery cell being in direct contact with the cooling liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310645714.7A CN116565388A (en) | 2023-05-31 | 2023-05-31 | Battery liquid cooling device and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310645714.7A CN116565388A (en) | 2023-05-31 | 2023-05-31 | Battery liquid cooling device and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116565388A true CN116565388A (en) | 2023-08-08 |
Family
ID=87491611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310645714.7A Pending CN116565388A (en) | 2023-05-31 | 2023-05-31 | Battery liquid cooling device and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116565388A (en) |
-
2023
- 2023-05-31 CN CN202310645714.7A patent/CN116565388A/en active Pending
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