WO2021218775A1 - 铜排保护结构、电池包及电动汽车 - Google Patents
铜排保护结构、电池包及电动汽车 Download PDFInfo
- Publication number
- WO2021218775A1 WO2021218775A1 PCT/CN2021/089022 CN2021089022W WO2021218775A1 WO 2021218775 A1 WO2021218775 A1 WO 2021218775A1 CN 2021089022 W CN2021089022 W CN 2021089022W WO 2021218775 A1 WO2021218775 A1 WO 2021218775A1
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- WO
- WIPO (PCT)
- Prior art keywords
- copper bar
- protection structure
- copper
- bar protection
- fixing
- Prior art date
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 140
- 239000010949 copper Substances 0.000 title claims abstract description 140
- 239000012782 phase change material Substances 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/10—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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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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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- 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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- 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
- H01M10/656—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
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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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
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/591—Covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the invention relates to the field of automobiles, in particular to a copper bar protection structure, a battery pack and an electric automobile.
- the battery pack As a power component of an electric vehicle, the battery pack is mainly operated by charging and discharging multiple battery packs formed by internal connections, and different battery packs are electrically connected through copper bars.
- the traditional process is to add a layer of PI (polyimide) film on the outer surface of the copper bar to play a role of insulation protection.
- PI polyimide
- the purpose of this application is to provide a copper bar protection structure, which forms a copper bar accommodating space through the butt-connected upper and lower shell designs, and at the same time lays a phase change material layer on the inner wall of the copper bar accommodating space, thereby forming copper
- the protection strength of the row protection structure on the copper row is improved, and the risk of leakage caused by vibration and wear is avoided.
- an embodiment of the present application provides a copper bar protection structure, which includes an upper shell and a lower shell that are butted with each other, and a receiving groove is respectively opened on the butting surface of the upper shell and the lower shell ,
- the two accommodating grooves form a copper row accommodating space, and a phase change material layer is laid on the inner wall of the accommodating groove.
- the copper row accommodating space accommodates the copper row
- the copper row is Variable material layer wrapping.
- the accommodating space formed by the upper shell and the lower shell can form a physical protection against the bumps of the copper bars.
- the design of the phase change material layer can buffer the wear between the upper and lower shells and the copper bars, and on the other hand, the phase change material layer It can absorb the heat of the copper bar and reduce the temperature of the copper bar.
- the thickness of the phase change material layer is 1 mm-2 mm.
- the phase change material layer with a thickness of 1mm-2mm can not only meet the needs of buffering wear, but also facilitate the miniaturization of the structure.
- the upper housing includes a plurality of fixing plates, and fixing through holes are opened on the fixing plates.
- the design of the fixing plate and the fixing through holes facilitate the installation and fixation of the copper bar protection structure, and avoid the collision of the copper bar protection structure with other components on the battery pack due to the vibration of the working condition.
- a metal protective sleeve is provided in the fixing through hole.
- the role of the metal protective sleeve is to protect the fixed through holes.
- the material of the upper and lower shells is preferably plastic, such as PPO (polyphenylene ether b), and the copper bar protection structure is installed by screws. Under vibration conditions, the screw will cause serious wear on the hole wall of the fixed through hole, which will cause the hole diameter to become larger. In extreme cases, the risk of screw slippage may occur. Therefore, a metal protective sleeve is designed on the hole wall of the fixed through hole. Ensure that the fixed through hole is not deformed due to wear.
- the fixing plate includes a first fixing plate and a second fixing plate, the plate surface of the first fixing plate is parallel to the butting surface, and the plate surface of the second fixing plate is perpendicular to the The butt surface.
- the board surfaces of the first board surface and the second board surface are perpendicular to each other to ensure that the force of the copper bar protection structure is more three-dimensional, and the fixing of the copper bar protection structure is more stable.
- the number of the first fixing plates is two, and the two first fixing plates are symmetrically arranged on both sides of the copper row accommodating space.
- the two first fixing plates symmetrically distributed on both sides of the copper row accommodating space can make the copper row protective structure more evenly stressed.
- the copper bar is divided into multiple sections in the extending direction, and at least one fixing plate is provided on the upper shell corresponding to each section of the copper bar.
- the copper bar due to the need of space connection, the copper bar needs to be bent, which will cause the copper bar to be divided into multiple sections in its extension direction, and the corresponding upper and lower shells are also divided into multiple sections.
- At least one fixing plate is provided on the upper shell corresponding to the different extension sections, which facilitates the fixed installation at the different extension sections and ensures that the force is evenly received during the installation process.
- the cross section perpendicular to the abutting surface is rectangular. Since the cross-section of the copper bar is usually rectangular, the copper bar protection mechanism with a hollow rectangular cross-section protects the copper bar while also realizing the miniaturization of the structure and avoiding the generation of redundant structures.
- the present application provides a battery pack, which includes a plurality of battery modules, liquid cooling plates, copper bars, and any of the above-mentioned copper bar protection structures.
- the plurality of battery packs are connected by the copper bars, and the copper bars are
- the copper bar protection structure is wrapped, and the copper bar protection structure is attached to the liquid cooling plate.
- the copper bar in the battery pack of the embodiment is wrapped by the copper bar protection structure to avoid direct contact and collision with the liquid cooling plate.
- the phase change material layer in the copper bar protection structure can absorb the heat of the copper bar when it is working and conduct it to the cold liquid plate. So as to achieve the temperature control effect.
- this application provides an electric vehicle, including the above-mentioned battery pack.
- the copper bar of the battery pack is wrapped by the copper bar protective structure, which improves the installation stability of the copper bar, avoids the risk of copper bar leakage, and enhances the safety performance of the electric vehicle.
- a copper bar housing space is formed through the design of the receiving grooves of the upper and lower housings that are connected to each other.
- a phase change material layer is laid on the inner wall of the housing groove to achieve copper protection. The package of the row avoids the risk of leakage of the copper row caused by collision during use.
- Fig. 1 is a schematic structural diagram of a copper bar protection structure in an embodiment of the present invention
- Figure 2 is a cross-sectional view of Figure 1 with A-A as the section line;
- Figure 3 is an exploded view of the cross-sectional view of Figure 2;
- Figure 4 is an exploded view of the copper bar protection structure in an embodiment of the present invention.
- Figure 5 is a partial enlarged view of B in Figure 1;
- Fig. 6 is a schematic diagram of the structure of a battery pack in an embodiment of the present invention.
- the copper bar protection structure in the embodiment of the present application can be used in a battery pack of an electric vehicle, and its function is to connect different battery modules in the battery pack to realize electrical connection between the battery modules.
- FIG. 1 is a schematic structural diagram of a copper bar protection structure according to an embodiment of the present application.
- FIG. 2 is a cross-sectional view of the copper bar protection structure along the AA section line.
- Figure 4 is an exploded view of the protective structure of the copper bar.
- the copper bar protection structure 10 in the embodiment includes an upper shell 11 and a lower shell 12.
- a receiving groove 14 is provided on the mating surface 15 of the upper shell 11 and the lower shell 12 respectively.
- the phase change material layer 30 is laid on the inner wall 13 of the accommodating groove 14 and the copper row 20 is placed in the copper row accommodating space. 20 is wrapped by a layer 30 of phase change material.
- the upper casing 11 and the lower casing 12 are preferably plastic profiles, such as PPO (polyphenylene ether b), which not only has a certain strength, but also has a lower density than general metals. It should be noted that the shapes of the upper casing 11 and the lower casing 12 are designed according to the shape and extension direction of the copper bar 20, as long as the copper bar 20 can be protected, and it is not a shape structure in the figure.
- phase change material layer 30 there are many ways to lay the phase change material layer 30 on the inner wall 13 of the containing groove 14.
- one operation first place the copper bar 20 on either the upper casing 11 or the lower casing 12 In the receiving groove 14, then the upper shell 11 and the lower shell 12 are connected to form a complete shell, and then the phase change material is injected into the shell from the openings at the end and the end, so that the copper bar 20 and the shell
- the inner wall 13 of the body is filled with phase change material, and then the phase change material layer 30 can be formed by drying it.
- the adoption of the method can ensure that the phase change material layer 30 tightly wraps the copper bar 20, avoiding the collision between the copper bar 20 and the inner wall 13 of the shell.
- the phase change material layer 30 has a certain heat absorption and heat storage function. 20
- the phase change material layer 30 will absorb part of the heat, and then transfer the heat to the outer upper shell 11 and the lower shell 12 to dissipate it.
- the copper bar protection structure 10 can be installed on the liquid cooling plate 50 of the battery pack 100, through the liquid cooling plate 50 takes away the phase change material layer 30 to absorb the stored heat, thereby buffering the sharp rise in the temperature of the copper bar 20.
- the thickness D of the phase change material layer 30 is 1 mm-2 mm.
- the phase change material layer 30 with a thickness D of 1 mm-2 mm can not only meet the demand of buffering wear, but also facilitate the miniaturization design of the structure.
- the cross-sectional figure perpendicular to the mating surface 15 is a hollow rectangle. Since the cross section of the copper bar 20 is generally rectangular, the copper bar protection mechanism 10 with a hollow rectangular cross-section can protect the copper bar 20 in a wrap-around manner, and at the same time realize the miniaturization design of the product.
- the copper bar protection structure The upper housing 11 of 10 further includes a first fixing plate 111 and a second fixing plate 112 with fixing through holes 113.
- the fixing plates (the first fixing plate 111 and the second fixing plate 112) are designed to position and install the copper bar protection structure 10 and other components on the battery pack.
- the copper bar protection structure 10 is installed on the liquid cooling plate 50.
- the copper bar 20 and the battery pack 60 are connected, and on the other hand, the screw is inserted through the fixing through hole to connect with the threaded hole, so as to realize the copper bar protection structure 10 on the liquid cooling plate 50 Install.
- the copper bar protection structure 10 that is positioned and installed by screws has better installation stability, and when the entire battery pack 100 is in a vibration condition, it will not cause any influence on the connection between the copper bar 20 and the battery pack 60.
- a metal protective sleeve 114 is provided in the fixing through hole 113.
- the role of the metal protective sleeve 114 is to protect the inner wall of the fixed through hole 113.
- the material of the upper casing 11 and the lower casing 12 is preferably plastic, and the copper bar protection structure 10 is made by screws Installation, under vibration conditions, the screw will cause serious wear on the wall of the fixing through hole 113, which will cause the hole diameter to become larger. In extreme cases, the risk of screw slippage may occur. Therefore, a metal is designed on the hole wall of the fixing through hole 113.
- the protective sleeve 114 can ensure that the fixed through hole 113 is not deformed due to wear.
- the fixing plate includes a first fixing plate 111 and a second fixing plate 112.
- the plate surface of the first fixing plate 111 is parallel to the mating surface 15, and the second fixing plate 111
- the board surface of the board 112 is perpendicular to the butting surface 15.
- the surface of the first fixing plate 111 and the surface of the second fixing plate 112 are perpendicular to each other to ensure that the force of the copper bar protection structure 10 is more three-dimensional, so that the fixing of the copper bar protection structure 10 is more stable.
- the battery pack is subjected to vibrations in different directions, which means that the copper bar protection structure 10 can withstand forces from different directions.
- the embodiment designs two mutually perpendicular fixing plates to ensure that the three-dimensional force is applied. More stable.
- the number of the first fixing plates 111 is two, and the two first fixing plates 111 are symmetrically arranged on both sides of the copper row accommodating space (the copper row 20).
- the two first fixing plates 111 symmetrically distributed on both sides of the copper bar 20 can make the copper bar protection structure 10 receive more uniform force, which can ensure the installation stability of the copper bar protection structure 10.
- the copper bar 20 is divided into multiple sections in the extending direction X, and at least one fixing plate is provided on the upper housing 111 corresponding to each section of the copper bar 20.
- the copper bar 20 needs to be bent, which will cause the copper bar 20 to be divided into multiple sections in its extension direction X, and the corresponding upper shell 11 and lower shell 12 are also divided into sections.
- at least one fixing plate is provided on the upper shell corresponding to different extension sections of the copper bar 20, which facilitates the fixed installation at the different extension sections and ensures that the force is evenly received during the installation process.
- the choice of the fixing plate can be the first fixing plate 111 or the second fixing plate 112. The specific design can be selected according to the wiring needs of the copper bar 20.
- the present application provides a battery pack 100, which includes a plurality of battery modules 60, a liquid cooling plate 50, a copper bar 20, and a copper bar protection structure 10, and the plurality of battery modules 60 pass copper
- the row 20 is connected, the copper row 20 is wrapped by the copper row protection structure 10, and the copper row protection structure 10 is attached to the liquid cooling plate 50.
- the copper bar 20 in the battery pack 100 is wrapped by the copper bar protective structure 10 to avoid direct contact and collision with the liquid-cooled plate 50.
- the phase change material layer 30 in the copper bar protective structure 10 can absorb the heat of the copper bar 10 during operation And it is transmitted to the cold liquid plate 50, so as to realize the temperature control effect.
- this application also provides an electric vehicle, including the above-mentioned battery pack 100.
- the copper bar 20 of the battery pack 100 is wrapped by the copper bar protective structure 10, which improves the installation stability of the copper bar 20, avoids the risk of leakage of the copper bar 20, and enhances the safety performance of the electric vehicle.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Inorganic Chemistry (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (10)
- 一种铜排保护结构,其特征在于,包括相互对接的上壳体和下壳体,所述上壳体和所述下壳体的对接面上各设有一个收容沟槽,两个所述收容沟槽合成一个铜排容置空间,所述收容沟槽的内壁铺设有相变材料层,所述铜排容置空间收容铜排时,所述铜排被所述相变材料层包裹。
- 如权利要求1所述的铜排保护结构,其特征在于,所述相变材料层的厚度为1mm-2mm。
- 如权利要求1或2所述的铜排保护结构,其特征在于,所述上壳体包括多个固定板,所述固定板上设有固定通孔,所述固定通孔用于所述铜排保护结构的安装定位。
- 如权利要求3所述的铜排保护结构,其特征在于,所述固定通孔内设有金属保护套,所述金属保护套用于对所述固定通孔的保护。
- 如权利要求3或4所述的铜排保护结构,其特征在于,所述固定板包括第一固定板和第二固定板,所述第一固定板的板面平行于所述对接面,所述第二固定板的板面垂直于所述对接面。
- 如权利要求5所述的铜排保护结构,其特征在于,所述第一固定板的数量为两个,两个所述第一固定板对称设在所述铜排容置空间的两侧。
- 如权利要求3-5中任一项所述的铜排保护结构,其特征在于,所述铜排在其延伸方向上分为多段,每段所述铜排对应的所述上壳体上至少设有一个固定板。
- 如权利要求1-7中任一项所述的铜排保护结构,其特征在于,所述第一壳体和所述第二壳体对接连为一体时,垂直于所述对接面的截面为矩形。
- 一种电池包,其特征在于,包括多个电池模组、液冷板、铜排和如权利要求1-8中任一所述铜排保护结构,多个电池包通过所述铜排连接,所述铜排被所述铜排保护结构包裹,所述铜排保护结构贴附在所述液冷板上。
- 一种电动汽车,其特征在于,包括如权利要求9中所述的电池包。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020227039599A KR20230004608A (ko) | 2020-04-27 | 2021-04-22 | 구리 바아 보호 구조체, 배터리 팩, 및 전기 차량 |
EP21796799.1A EP4131630A4 (en) | 2020-04-27 | 2021-04-22 | PROTECTIVE STRUCTURE OF COPPER BAR, BATTERY PACK, AND ELECTRIC VEHICLE |
JP2022565609A JP2023524674A (ja) | 2020-04-27 | 2021-04-22 | 銅バスバー保護構造、電池パック及び電気自動車 |
US17/921,072 US20230170589A1 (en) | 2020-04-27 | 2021-04-22 | Copper bar protection structure, battery pack, and electric vehicle |
Applications Claiming Priority (2)
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CN202010345267.XA CN113644384A (zh) | 2020-04-27 | 2020-04-27 | 铜排保护结构、电池包及电动汽车 |
CN202010345267.X | 2020-04-27 |
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WO2021218775A1 true WO2021218775A1 (zh) | 2021-11-04 |
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PCT/CN2021/089022 WO2021218775A1 (zh) | 2020-04-27 | 2021-04-22 | 铜排保护结构、电池包及电动汽车 |
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US (1) | US20230170589A1 (zh) |
EP (1) | EP4131630A4 (zh) |
JP (1) | JP2023524674A (zh) |
KR (1) | KR20230004608A (zh) |
CN (1) | CN113644384A (zh) |
WO (1) | WO2021218775A1 (zh) |
Cited By (1)
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WO2024024976A1 (ja) * | 2022-07-29 | 2024-02-01 | イビデン株式会社 | バスバー及びその製造方法、並びに蓄電装置 |
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2020
- 2020-04-27 CN CN202010345267.XA patent/CN113644384A/zh active Pending
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2021
- 2021-04-22 JP JP2022565609A patent/JP2023524674A/ja active Pending
- 2021-04-22 KR KR1020227039599A patent/KR20230004608A/ko unknown
- 2021-04-22 US US17/921,072 patent/US20230170589A1/en active Pending
- 2021-04-22 EP EP21796799.1A patent/EP4131630A4/en active Pending
- 2021-04-22 WO PCT/CN2021/089022 patent/WO2021218775A1/zh unknown
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Also Published As
Publication number | Publication date |
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US20230170589A1 (en) | 2023-06-01 |
EP4131630A1 (en) | 2023-02-08 |
KR20230004608A (ko) | 2023-01-06 |
CN113644384A (zh) | 2021-11-12 |
JP2023524674A (ja) | 2023-06-13 |
EP4131630A4 (en) | 2024-02-21 |
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