WO2018090857A1 - 动力电池底托以及动力电池模组 - Google Patents

动力电池底托以及动力电池模组 Download PDF

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Publication number
WO2018090857A1
WO2018090857A1 PCT/CN2017/109800 CN2017109800W WO2018090857A1 WO 2018090857 A1 WO2018090857 A1 WO 2018090857A1 CN 2017109800 W CN2017109800 W CN 2017109800W WO 2018090857 A1 WO2018090857 A1 WO 2018090857A1
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WO
WIPO (PCT)
Prior art keywords
pipe
power battery
tube
liquid
connecting pipe
Prior art date
Application number
PCT/CN2017/109800
Other languages
English (en)
French (fr)
Inventor
曾毅
郑卫鑫
朱建华
朱燕
Original Assignee
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to JP2019526233A priority Critical patent/JP6802376B2/ja
Priority to EP17870830.1A priority patent/EP3544079B1/en
Priority to ES17870830T priority patent/ES2967438T3/es
Priority to US16/348,419 priority patent/US11545710B2/en
Priority to KR1020197013426A priority patent/KR102252860B1/ko
Publication of WO2018090857A1 publication Critical patent/WO2018090857A1/zh

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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
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • 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
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • 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 belongs to the field of electric vehicles, and in particular relates to a power battery base and a power battery module.
  • a power battery base is used to support a power battery pack, including a tray and a liquid cooling tube mounted on the tray.
  • a beam is arranged in the tray, and the liquid cooling tube is also laid in the tray, and the beam needs to be provided with a perforation through which the liquid cooling tube passes, so that in the assembly process of the power battery bottom tray, After the liquid cooling pipe needs to be assembled to the tray, the beam can be installed to the disk body, which results in the assembly of the liquid cooling pipe is time consuming, that is, the liquid cooling pipe assembly efficiency is low, and when the liquid cooling pipe is assembled, often It is already in the assembly stage of the finished product, which is not conducive to the assembly efficiency of the finished product, and the cost per unit time is high in the assembly stage of the finished product, which is not conducive to reducing the production cost.
  • the liquid cooling pipe when the liquid cooling pipe needs to be replaced, based on the above structure, the liquid cooling pipe can be taken out after the disk body and the beam are removed, which causes the liquid cooling pipe to be disassembled more time-consuming, that is, the liquid cooling pipe is also disassembled. Inefficient problem.
  • An object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a power battery base which aims to solve the problem of low efficiency in assembly and disassembly of a liquid-cooled pipe.
  • the present invention is implemented as follows:
  • a power battery base for supporting a power battery pack comprising a tray and a liquid cooling tube mounted on the tray, the tray comprising a bottom plate and side plates disposed around the bottom plate, the bottom plate and the bottom plate
  • the side plates collectively form a receiving cavity for accommodating the power battery pack
  • the bottom plate is provided with at least one cross beam
  • the cross beams collectively divide the bottom plate into at least two sub-floors
  • the liquid cooling pipe is laid at least one The sub-floor is disposed, and the liquid-cooled tube spans a cross beam passing therethrough.
  • the liquid cooling tube comprises an inlet pipe, an outlet pipe, a bonding pipe, and a connecting pipe group for connecting the liquid inlet pipe, the liquid outlet pipe and the bonding pipe, the connection
  • the tube group is spanned over the beam passing therethrough, and at least two of the sub-floors are laid with the bonding tube.
  • the connecting pipe group includes a first connecting pipe connecting the liquid inlet pipe and the bonding pipe, a second connecting pipe connecting the two bonding pipes, and connecting the liquid discharging pipe and the
  • the third connecting pipe of the fitting pipe, the first connecting pipe, the second connecting pipe and the third connecting pipe are both spanned by a cross beam passing therethrough, and the second connecting pipe is provided with at least one.
  • first connecting tube, the second connecting tube and the third connecting tube are disposed on the inner side wall of the side panel.
  • the heights of the first connecting tube, the second connecting tube and the third connecting tube are both lower than the height of the side panel.
  • liquid inlet pipe, the liquid outlet pipe, the bonding pipe, the first connecting pipe, the second connecting pipe and the third connecting pipe are integrally provided.
  • the connecting tube group includes two collecting tubes, one of the connecting tubes is in communication with the liquid inlet tube, and the other of the connecting tubes is connected to the liquid discharging tube, and the two connecting tubes are straddle The two ends of the at least two of the bonding tubes are respectively connected to the two of the collecting tubes.
  • the connecting tube group further includes a fourth connecting tube for connecting the two connecting tubes, the fourth connecting tube spanning a cross beam passing therethrough, and the fourth connecting tube is at least provided One.
  • one of the two opposite side panels, the inner wall surface of one of the side panels is in close contact with one of the confluence tubes, and the inner wall surface of the other of the side panels is in close contact with the other of the confluence tubes .
  • the arrangement path of the bonding tube is arranged in a meandering manner.
  • the inlet pipe is disposed on the inner side wall of the side plate or extends out of the inner side wall of the side plate;
  • the liquid outlet tube is disposed to be disposed on the inner side wall of the side plate or extends along the inner side wall of the side plate to extend out of the receiving cavity.
  • the bonding tube is disposed in a flat tube.
  • the beam is integrally provided with the bottom plate.
  • the invention also provides a power battery module comprising the above power battery base.
  • the liquid cooling pipe is spanned over the beam passing therethrough, and when the power battery bottom is assembled, the beam is first fixed to the tray, and then the liquid cooling pipe is directly placed on the tray, so that it is not necessary to first After the liquid-cooled pipe is assembled to the pallet, the beam is mounted to the pallet, thereby improving the assembly efficiency of the liquid-cooled pipe assembly to the pallet, and particularly facilitating assembly efficiency in the assembly phase of the finished product.
  • the liquid cooling pipe When the liquid cooling pipe is disassembled, the liquid cooling pipe also straddles the beam passing through the beam, and the beam does not interfere with the removal of the liquid cooling pipe from the tray, and the liquid cooling pipe can be directly removed from the tray without
  • the liquid cooling pipe can be removed after the beam is detached from the tray, which is beneficial to improve the disassembly efficiency of the liquid cooling pipe. If the maintenance occurs later, the liquid cooling pipe can be directly removed from the tray, which is beneficial to improve the maintenance efficiency.
  • the beam does not need to open a perforation through which the liquid cooling pipe passes, so that the mechanical strength of the beam due to the opening of the perforation can be avoided, which is advantageous for increasing the supporting load of the power battery bottom support.
  • the liquid cooling pipe is spanned over the beam passing through it, the liquid cooling pipe is arranged in a three-dimensional manner as a whole, so that the contact points of the liquid cooling pipe and the power battery pack are also arranged in three dimensions, instead of only in one plane, It can reduce the heat conduction distance of part of the heat energy and improve the heat dissipation efficiency of the liquid cooling tube.
  • FIG. 1 is a schematic view showing the overall structure of a power battery base according to Embodiment 1 of the present invention.
  • FIG. 2 is an overall exploded view of a power battery bottom bracket according to Embodiment 1 of the present invention.
  • Embodiment 3 is a schematic view showing the overall structure of a power battery base provided by Embodiment 2 of the present invention.
  • Embodiments of the present invention provide a power battery base for supporting a power battery pack.
  • the power battery bed includes a tray 100 and a liquid cooling tube 200 mounted to the tray 100.
  • the liquid cooling tube 200 may be made of a material having a high thermal conductivity, such as metallic copper, metallic silver, or the like.
  • the tray 100 includes a bottom plate 110 and a side plate 120 disposed around the bottom plate 110.
  • the bottom plate 110 and the side plate 120 together form a receiving cavity (not shown) for accommodating the power battery pack, and the bottom plate 110 is provided with at least one beam 300. It is preferable to provide a beam 300 in the cross direction.
  • Each of the beams 300 collectively divides the bottom plate 110 into at least two sub-base plates 111, and the liquid-cooled tubes 200 are at least laid.
  • the liquid-cooling pipe 200 is disposed across the beam 300 through which the liquid-cooled pipe 200 passes, that is, the liquid-cooled pipe 200 is disposed on the outer surface of the beam 300. More specifically, the liquid-cooled tube 200 is laid in one of the sub-bases 111 and extends from the sub-base 111 to the side plates 120 or into the other sub-base 111. During the extension, the liquid-cooled tube 200 spans.
  • the cross member 300 between the two sub-base plates 111 extends into the other sub-base 111 or across the cross member 300 between the sub-floor 111 and the side plates 120 and along the side plates 120 to the outlet or inlet tube.
  • the beam 300 is provided with four strips, and the four beams 300 divide the bottom plate 110 into three sub-bases 111, wherein the two beams 300 are respectively disposed adjacent to the inner side walls of the side plates 120.
  • “span across” includes a liquid-cooled tube that spans the beam 300, spans from the middle (and may even be fixed to the beam 300) or spans from the end of the beam 300 near the side plate 120 (at this time, liquid)
  • the portion of the cold tube that spans the beam 300 may be fixed to the beam 300 or may be fixed to the side plate 120; of course, the liquid cooling tube also extends directly from the sub-floor to the side plate 120 and continues along the side plate 120.
  • the liquid-cooled tube extends to a position higher than the portion of the beam 300, and is regarded as "span across" the beam 300.
  • the liquid cooling tube 200 is placed across the beam 300 passing therethrough.
  • the beam 300 is first fixed to the tray 100, and then the liquid cooling tube 200 is directly placed on the tray 100. In this way, it is not necessary to first assemble the liquid cooling tube 200 to the tray 100, and then the beam 300 is mounted to the tray 100, thereby improving the assembly efficiency of the liquid cooling tube 200 to the tray 100, and particularly facilitating assembly efficiency in the assembly phase of the finished product.
  • the liquid cooling pipe 200 is disassembled, since the liquid cooling pipe 200 straddles the beam 300 passing therethrough, the beam 300 does not interfere with the removal of the liquid cooling pipe 200 from the tray 100, and the liquid cooling pipe 200 can be directly used.
  • the liquid cooling tube 200 can be disassembled after the detaching of the beam 300 from the tray 100, so that the liquid cooling tube 200 can be disassembled efficiently. If the maintenance occurs later, the liquid cooling tube can be directly used. The 200 is directly detached from the tray 100, which is advantageous for improving maintenance efficiency.
  • the beam 300 does not need to open the perforation through which the liquid cooling pipe 200 passes, so that the mechanical strength of the beam 300 is reduced due to the opening of the perforation, which is advantageous for increasing the supporting load of the power battery bottom support;
  • the overall toughness which in turn improves the overall toughness of the tray 100, ensures the safe use of the tray 100.
  • the liquid cooling tube 200 spans the beam 300 passing through the liquid cooling tube 200, the liquid cooling tube 200 is arranged in a three-dimensional manner as a whole, so that the contact point between the liquid cooling tube 200 and the power battery pack is also three-dimensionally arranged, instead of only one. In this way, the heat conduction distance of part of the thermal energy can be reduced, and the heat dissipation efficiency of the liquid-cooled tube 200 can be improved.
  • the liquid cooling tube 200 includes a liquid inlet tube 211, a liquid outlet tube 212, a bonding tube 213, and a connecting tube group for connecting the liquid inlet tube 211, the liquid outlet tube 212, and the bonding tube 213.
  • the connecting pipe group 214 spans the beam 300 passing therethrough, and at least two sub-base plates 111 are laid with the bonding pipe 213.
  • the connecting tube group 214 is raised on the plane formed by the bonding tube 213, so that the liquid cooling tube 200 is arranged in a three-dimensional manner, and the heat adjacent to the connecting tube group 214 is absorbed by the connecting tube group 214, which is beneficial to improving the heat dissipation of the liquid cooling tube 200. effectiveness.
  • the bonding tube 213 in one sub-base 111 extends across the beam 300 into the other sub-substrate 111 to communicate with the bonding tube 213 in the other sub-substrate 111; or
  • the bonding tube 213 in the sub bottom plate 111 extends across the beam 300 to the side plate 120 and extends along the side plate 120 to the liquid outlet tube 212 or the liquid inlet tube 211.
  • the connection tube set 214 includes a first connection tube 2141 connecting the inlet tube 211 and the attachment tube 213, and a second connection connecting the two attachment tubes 213.
  • the tube 2142 and the third connecting tube 2143 connecting the liquid outlet tube 212 and the bonding tube 213, the first connecting tube 2141, the second connecting tube 2142 and the third connecting tube 2143 are both spanned by the beam 300 passing therethrough.
  • each of the bonding tubes 213 is arranged in series, and the medium enters the one-way flow, which is beneficial to increasing the flow speed of the medium, thereby improving the heat dissipation efficiency.
  • the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143 are protruded from the plane formed by the bonding pipe 213, so that the liquid cooling pipe 200 is arranged in a three-dimensional manner, adjacent to the first connecting pipe 2141, and the second.
  • the heat of the connecting pipe 2142 and the third connecting pipe 2143 will be absorbed by the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143, respectively, thereby improving the heat dissipation efficiency of the liquid cooling pipe 200.
  • the first connecting tube 2141 and the third connecting tube 2143 are the connecting portions of the bonding tube 213 in the sub-base 111 extending across the beam 300 to the side plate 120, that is, the portion crossing the beam 300;
  • the second connecting pipe 2142 is a connecting portion of the bonding pipe 213 in one sub-floor 111 extending across the beam 300 to the bonding pipe 213 in the other sub-substrate 111, that is, a portion spanning the beam 300, for The bonding tube 213 in the adjacent two sub-bases 111 is connected.
  • the inlet pipe 211 is disposed on the inner side wall of the side plate 120
  • the liquid outlet pipe 212 is disposed on the inner side wall of the side plate 120.
  • the first connecting pipe 2141, the second connecting pipe 2142 and the third connecting pipe 2143 are fitted. It is disposed on the inner side wall of the side plate 120.
  • the inlet pipe 211, the outlet pipe 212, the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143 are both disposed in the accommodating cavity, the inlet pipe 211, the outlet pipe 212, and the first connection
  • the arrangement of the tube 2141, the second connecting tube 2142 and the third connecting tube 2143 will affect the installation position of the power battery pack by passing the inlet tube 211, the outlet tube 212, the first connecting tube 2141, and the second connecting tube 2142 and the third connecting pipe 2143 are disposed on the inner side wall of the side plate 120, that is, the liquid inlet pipe 211, the liquid outlet pipe 212, the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143 are disposed on
  • the cavity wall is accommodated, and the power battery pack can be disposed in the bottom of the accommodating cavity compared with the liquid inlet pipe 211, the liquid outlet pipe 212, the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143.
  • the second connecting tube 2142 may be disposed on the same side plate 120 as the first connecting tube 2141 or the third connecting tube 2143, and the second connecting tube 2142 may be disposed on the first connecting tube 2141 or The third connecting tube 2143 faces the outer wall surface of the accommodating chamber.
  • the liquid inlet tube 211 can extend along the inner side wall of the side plate 120 to extend out of the receiving cavity, and the liquid outlet tube 212 can also extend out of the inner side wall of the side plate 120 to the receiving cavity to connect the liquid cooling tube 200 to the outside. It is placed outside the accommodating cavity to simplify the connection structure of the power battery pedestal in the accommodating cavity.
  • the heights of the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143 are lower than the height of the side plate 120, so that the first connecting pipe 2141, the second connecting pipe 2142, and the The three connecting tubes 2143 abut against the bottom of the vehicle to prevent the power battery bottom bracket from being assembled to the bottom of the electric vehicle.
  • the arrangement path of the bonding tube 213 is set in a meandering manner. Based on this, by the twisting and bending arrangement of the bonding tube 213, the contact surface of the liquid cooling tube 200 and the bottom surface of the power battery pack can be increased, the heat exchange area between the liquid cooling tube 200 and the bottom surface of the power battery unit can be increased, and the liquid cooling tube 200 and the power can be improved. The heat exchange efficiency of the battery pack further increases the heat dissipation efficiency of the liquid-cooled tube 200.
  • the arrangement path of the bonding tube 213 is how to bend back and set, according to the shape of the actual product, and the main heat dissipation point of the power battery pack, such as M type, U type or S type.
  • the inlet pipe 211, the outlet pipe 212, the bonding pipe 213, the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143 are integrally provided.
  • the solder joints or joints drawn from the liquid-cooled tube 200 can be reduced, which is advantageous for improving the stability, safety and durability of the structure of the liquid-cooled tube 200.
  • the inlet pipe 211, the outlet pipe 212, the bonding pipe 213, the first connecting pipe 2141, the second connecting pipe 2142, and the third connecting pipe 2143 are all provided in a flat tube. Based on this, the liquid inlet tube 211, the liquid outlet tube 212, the bonding tube 213, the first connecting tube 2141, the second connecting tube 2142, and the third connecting tube 2143 can be attached to the bottom plate 110 and the side plate 120 through a flat surface. In this way, on the one hand, in the case of ensuring the same flow rate of the liquid cooling pipe 200, it is advantageous to save space. On the other hand, the liquid inlet pipe 211, the liquid outlet pipe 212, the bonding pipe 213, the first connecting pipe 2141, and the second connection are provided.
  • Both the tube 2142 and the third connecting tube 2143 can be in contact with the power battery pack through another flat surface, which is beneficial to increase the contact area between the liquid cooling tube 200 and the power battery pack, thereby improving the heat exchange efficiency between the liquid cooling tube 200 and the power battery pack. Further, the heat dissipation efficiency of the liquid-cooled tube 200 is improved.
  • the beam 300 is integrally provided with the bottom plate 110. Based on this, the beam 300 and the bottom plate 110 are integrally formed in the production process, so that the assembly steps of the beam 300 and the bottom plate 110 are removed, which is advantageous for improving assembly efficiency. In addition, the beam 300 is integrally provided with the bottom plate 110, which is also advantageous for increasing the load carrying capacity of the tray 100.
  • connection tube group 214 includes two junction tubes 2144, wherein one of the junction tubes 2144 is in communication with the inlet tube 211, and A manifold 2144 is in communication with the outlet tube 212.
  • the two manifolds 2144 are spanned over the respective beams 300.
  • the two ends of the at least two bonding tubes 213 are respectively in communication with the two manifolds 2144. Specifically, one end of the bonding tube 213 is in communication with one of the collecting tubes 2144, and the other end is in communication with the other collecting tube 2144.
  • the above-mentioned bonding tube 213 includes at least two, so that at least two bonding tubes 213 are arranged in parallel.
  • the medium enters the parallel connection tube 213 through a manifold 2144, the medium has substantially the same temperature, which is advantageous for balancing the heat absorption capability of the parallelly disposed bonding tube 213.
  • the two manifolds 2144 are protruded from the plane formed by the bonding tube 213, so that the liquid cooling tube 200 is arranged in a three-dimensional manner, and the heat of the portion adjacent to the collecting tube 2144 is absorbed by the collecting tube 2144, which is beneficial to improving the heat dissipation of the liquid cooling tube 200. effectiveness.
  • each of the bonding tubes 213 is respectively disposed on a sub-base 111, and each of the bonding tubes 213 is in communication with a manifold 2144, and the other port is in communication with another manifold 2144.
  • the inner wall surface of the one side plate 120 is in close contact with the bus bar 2144, and the inner wall surface of the other side plate 120 is in close contact with the other bus bar 2144.
  • the inlet pipe 211, the outlet pipe 212 and the two manifolds 2144 is disposed on the inner side wall of the side plate 120, that is, the liquid inlet pipe 211, the liquid outlet pipe 212 and the two bus bars 2144 are disposed on the wall of the accommodating cavity, compared to the inlet pipe 211, the outlet pipe 212 and The two manifolds 2144 are disposed at the bottom of the accommodating cavity, and the power battery pack as a whole can be closer to the bonding tube 213, and the bonding tube 213 is used as the main heat-dissipating tube member, and the closer to the bonding tube 213, the better the heat dissipation efficiency is improved.
  • the bonding tube 213 is provided in a flat tube. Based on this, the bonding tube 213 passes through the flat surface substrate 110. On the one hand, in the case of ensuring the same flow rate of the liquid cooling tube 200, it is advantageous to save space. On the other hand, another flat surface of the bonding tube is in contact with the power battery pack. It is beneficial to increase the contact area between the liquid cooling tube 200 and the power battery pack, thereby improving the heat exchange efficiency between the liquid cooling tube 200 and the power battery pack, thereby improving the heat dissipation efficiency of the liquid cooling tube 200.
  • the third embodiment differs from the second embodiment in that the connecting tube group further includes a fourth connecting tube for connecting the two connecting tubes, the fourth connecting tube spanning the cross beam passing through the fourth connecting tube, and the fourth connecting tube is at least There is one, that is, at least two bonding tubes are connected in series to be connected to the manifold, instead of being directly connected to the two manifolds.
  • the liquid cooling tube has a connecting tube arranged in series, and also has a parallel connection.
  • the set of the matching tube in this way, is advantageous for comprehensively utilizing the advantages of the series connection and the parallel arrangement of the bonding tube, and can be arranged according to specific heat dissipation requirements.
  • the present invention also provides a power battery module including a power battery base.
  • the specific structure of the power battery base refers to the first, second, and third embodiments, because the power battery module adopts all of the above. All the technical solutions of the first, second and third embodiments are also provided with all the beneficial effects brought about by the technical solutions of the first, second and third embodiments, and will not be further described herein.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

一种动力电池底托以及动力电池模组，其中，动力电池底托包括托盘(100)以及安装于所述托盘(100)的液冷管(200)，所述托盘(100)包括底板(110)和围绕所述底板(110)四周设置的侧板(120)，所述底板(110)和所述侧板(120)共同形成用于容纳动力电池组的容纳腔，所述底板(110)上至少设置有一条横梁(300)，所述横梁(300)将所述底板(110)至少分割成两块子底板(111)，所述液冷管(200)至少铺设于一个所述子底板(111)上，且所述液冷管(200)跨设于其经过的横梁(300)。通过液冷管(200)跨设于其经过的横梁(300)，无需先将液冷管(200)装配到托盘(100)后，再将横梁(300)安装到托盘(100)，提高液冷管(200)装配到托盘(100)的装配效率，特别是有利于成品组装阶段的组装效率，而在拆卸液冷管(200)时，也无需待横梁(300)从托盘(100)拆离后才能将液冷管(200)拆卸下来，从而提高液冷管(200)的拆卸效率。

Description

动力电池底托以及动力电池模组 技术领域
本发明属于电动汽车领域，尤其涉及一种动力电池底托以及动力电池模组。
背景技术
在电动汽车中，动力电池底托，用于承托动力电池组，包括托盘以及安装于托盘的液冷管。其中，为了加强托盘的支撑载荷，托盘中设有横梁，而液冷管也在托盘中铺设，横梁需开设有供液冷管穿过的穿孔，这样，在动力电池底托的装配工艺中，需要将液冷管装配到托盘后，才能将横梁安装到盘体，这导致液冷管的装配较为费时，也即是存在液冷管装配效率低的问题，而进行装配液冷管时，往往已经是成品组装阶段，不利于成品组装效率，且在成品组装阶段，单位时间成本较高，不利于降低生产成本。此外，当液冷管需要更换时，基于上述结构，需要将盘体与横梁拆卸之后，才能够将液冷管取出，这导致液冷管的拆卸较为费时，也即是液冷管还存在拆卸效率低的问题。
发明内容
本发明的目的在于克服上述现有技术的不足，提供一种动力电池底托，其旨在解决液冷管的装配和拆卸存在效率低的问题。
本发明是这样实现的：
一种动力电池底托，用于承托动力电池组，包括托盘以及安装于所述托盘的液冷管，所述托盘包括底板和围绕所述底板四周设置的侧板，所述底板和所述侧板共同形成用于容纳动力电池组的容纳腔，所述底板上至少设置有一条横梁，各所述横梁共同将所述底板至少分割成两块子底板，所述液冷管至少铺设于一个所述子底板上，且所述液冷管跨设于其经过的横梁。
可选地，所述液冷管包括进液管、出液管、贴合管以及用于连接所述进液管、所述出液管和所述贴合管的连接管组，所述连接管组跨设于其经过的横梁，至少两所述子底板铺设有所述贴合管。
可选地，所述连接管组包括连接所述进液管和所述贴合管的第一连接管、连接两所述贴合管的第二连接管以及连接所述出液管和所述贴合管的第三连接管，所述第一连接管、所述第二连接管和所述第三连接管均跨设于其经过的横梁，所述第二连接管至少设有一条。
可选地，所述第一连接管、所述第二连接管和所述第三连接管贴合布置于所述侧板内侧壁。
可选地，所述第一连接管、所述第二连接管和所述第三连接管的高度均低于所述侧板的高度。
可选地，所述进液管、所述出液管、所述贴合管、所述第一连接管、所述第二连接管和所述第三连接管一体设置。
可选地，所述连接管组包括两条汇流管，一条所述汇流管与所述进液管连通，另一条所述汇流管与所述出液管连通，两条所述汇流管跨设于各自所经过的横梁，至少两条所述贴合管的两端均分别与两条所述汇流管连通。
可选地，所述连接管组还包括用于连接两条所述贴合管的第四连接管，所述第四连接管跨设于其经过的横梁，所述第四连接管至少设有一条。
可选地，两个相对设置的所述侧板中，一个所述侧板的内壁面紧贴有一条所述汇流管，另一个所述侧板的内壁面紧贴有另一条所述汇流管。
可选地，所述贴合管的布置路径迂回弯曲设置。
可选地，所述进液管贴合布置于所述侧板内侧壁或沿所述侧板内侧壁延伸出所述容纳腔；
和/或，所述出液管贴合布置于所述侧板内侧壁或沿所述侧板内侧壁延伸出所述容纳腔。
可选地，所述贴合管呈扁状管设置。
可选地，所述横梁与所述底板一体设置。
本发明还提供一种动力电池模组，包括上述的动力电池底托。
基于本发明的结构，通过液冷管跨设于其经过的横梁，在装配动力电池底托时，先将横梁固定到托盘后，再将液冷管直接安置到托盘上，这样，无需先将液冷管装配到托盘后，再将横梁安装到托盘，从而提高液冷管装配到托盘的装配效率，特别是有利于成品组装阶段的组装效率。而在拆卸液冷管时，也由于液冷管跨设于其经过的横梁，横梁对液冷管从托盘的拆除不起到干扰的作用，可直接将液冷管从托盘中拆卸下来，无需将横梁从托盘拆离后才能将液冷管拆卸下来，这样，有利于提高液冷管的拆卸效率，如后续出现维修，可直接将液冷管从托盘中拆卸下来，有利于提高维修效率。
此外，基于本发明的结构，横梁不需要开设供液冷管穿过的穿孔，这样，可以避免横梁因开设穿孔而导致机械强度下降，有利于增加动力电池底托支撑载荷。
另，也由于液冷管跨设于其经过的横梁，液冷管整体呈三维立体布置，使得液冷管与动力电池组的接触点也呈三维立体布置，而不是仅在一个平面上，这样，能够减少部分热能的热传导距离，提高液冷管的散热效率。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例一提供的动力电池底托的整体结构示意图；
图2是本发明实施例一提供的动力电池底托的整体分解图；
图3是本发明实施例二提供的动力电池底托的整体结构示意图。
附图标号说明：
标号 名称 标号 名称
100 托盘    
110 底板 111 子底板
120 侧板    
200 液冷管    
211 进液管 212 出液管
213 贴合管    
214 连接管组    
2141 第一连接管 2142 第二连接管
2143 第三连接管 2144 汇流管
300 横梁    
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
实施例一
本发明实施例提供一种动力电池底托，用于承托动力电池组。
如图1和图2所示，该动力电池底托包括托盘100以及安装于托盘100的液冷管200。其中，液冷管200可由具有高导热系数的材料制成，如金属铜、金属银等。托盘100包括底板110和围绕底板110四周设置的侧板120，底板110和侧板120共同形成用于容纳动力电池组的容纳腔(图中未标注)，底板110上至少设置有一条横梁300，可以优选横亘设置有一条横梁300。各横梁300共同将底板110分割成至少两块子底板111，液冷管200至少铺 设于其中一个子底板111，液冷管200跨设于其经过的横梁300，即液冷管200布置于横梁300外表面。更具体的，液冷管200铺设在其中一个子底板111内，并且由该子底板111向侧板120延伸或者延伸至另外一个子底板111内，在延伸的过程中，液冷管200跨过两个子底板111之间的横梁300延伸到另外一个子底板111内，或者跨过子底板111与侧板120之间的横梁300并沿着侧板120延伸至出液管或进液管。在本实施中，横梁300设有四条，该四条横梁300将底板110分割成三块子底板111，其中，两横梁300分别与侧板120内侧壁临近设置。
在本发明中，“跨设于”包括液冷管跨过横梁300，从中间跨过(甚至可以固定在横梁300上)或者从横梁300靠近侧板120的端部跨过(此时，液冷管跨过横梁300的部分，可以固定在横梁300上，也可以固定在侧板120上)；当然，还包括液冷管从子底板直接延伸至侧板120，并沿侧板120继续延伸至其他子底板或者延伸至进液管或出液管，此时，液冷管高于横梁300的部分延伸至其他位置，视为“跨设于”横梁300。
基于本发明的结构，通过液冷管200跨设于其经过的横梁300，在装配动力电池底托时，先将横梁300固定到托盘100后，再将液冷管200直接安置到托盘100上，这样，无需先将液冷管200装配到托盘100后，再将横梁300安装到托盘100，从而提高液冷管200装配到托盘100的装配效率，特别是有利于成品组装阶段的组装效率。而在拆卸液冷管200时，也由于液冷管200跨设于其经过的横梁300，横梁300对液冷管200从托盘100的拆除不起到干扰的作用，可直接将液冷管200从托盘100中拆卸下来，无需将横梁300从托盘100拆离后才能将液冷管200拆卸下来，这样，有利于提高液冷管200的拆卸效率，如后续出现维修，可直接将液冷管200直接从托盘100中拆卸下来，有利于提高维修效率。
此外，基于本发明的结构，横梁300不需要开设供液冷管200穿过的穿孔，避免横梁300因开设穿孔而导致机械强度下降，有利于增加动力电池底托支撑载荷；提高了横梁300的整体韧性，进而提高了托盘100的整体韧性，保证了托盘100的使用安全性能。
另，也由于液冷管200跨设于其经过的横梁300，液冷管200整体呈三维立体布置，使得液冷管200与动力电池组的接触点也呈三维立体布置，而不是仅在一个平面，这样，能够减少部分热能的热传导距离，提高液冷管200的散热效率。
如图1和图2所示，液冷管200包括进液管211、出液管212、贴合管213以及用于连接进液管211、出液管212和贴合管213的连接管组214，连接管组214跨设于其经过的横梁300，至少两子底板111铺设有贴合管213。其中，连接管组214凸起于贴合管213形成的平面，从而使液冷管200呈三维立体布置，临近连接管组214的热量将由连接管组214吸收，有利于提高液冷管200散热效率。一些实施例中，一个子底板111内的贴合管213跨过横梁300延伸到另外一个子底板111内，与另一个子底板111内的贴合管213连通；或者， 子底板111内的贴合管213跨过横梁300延伸到侧板120，并沿着侧板120延伸至出液管212或进液管211。
具体地，在本实施例中，如图1和图2所示，连接管组214包括连接进液管211和贴合管213的第一连接管2141、连接两贴合管213的第二连接管2142以及连接出液管212和贴合管213的第三连接管2143，第一连接管2141、第二连接管2142和第三连接管2143均跨设于其经过的横梁300。这样，实现各贴合管213串联设置，媒介进入单向流动，有利于提高媒介的流动速度，进而提高散热效率。其中，第一连接管2141、第二连接管2142和第三连接管2143凸起于贴合管213形成的平面，从而使液冷管200呈三维立体布置，临近第一连接管2141、第二连接管2142和第三连接管2143的热量将分别由第一连接管2141、第二连接管2142和第三连接管2143吸收，从而提高液冷管200散热效率。
上述具体实施例中，第一连接管2141和第三连接管2143即为子底板111内的贴合管213跨过横梁300延伸到侧板120的连接部分，也就是跨过横梁300的部分；而第二连接管2142即为一个子底板111内的贴合管213跨过横梁300延伸到另外一个子底板111内的贴合管213的连接部分，也就是跨过横梁300的部分，用于连接相邻两个子底板111内的贴合管213。
进一步地，进液管211贴合布置于侧板120内侧壁，出液管212贴合布置于侧板120内侧壁，第一连接管2141、第二连接管2142和第三连接管2143贴合布置于侧板120内侧壁。如果进液管211、出液管212、第一连接管2141、第二连接管2142和第三连接管2143均布置于容置腔内，则进液管211、出液管212、第一连接管2141、第二连接管2142和第三连接管2143的布置状况将对动力电池组安装位置产生影响，而通过将进液管211、出液管212、第一连接管2141、第二连接管2142和第三连接管2143贴合布置于侧板120内侧壁，也即是进液管211、出液管212、第一连接管2141、第二连接管2142和第三连接管2143均设置于容置腔腔壁，相比于将进液管211、出液管212、第一连接管2141、第二连接管2142和第三连接管2143设置于容置腔腔底，使动力电池组能够更靠近贴合管213，而贴合管213作为主要散热管件，越靠近贴合管213，越有利于提高散热效率。此外，在其他实施例中，如第二连接管2142出现在与第一连接管2141或第三连接管2143相同的侧板120，第二连接管2142可贴合设置在第一连接管2141或第三连接管2143的朝向容纳腔的外壁面。
在其他实施例中，进液管211可沿侧板120内侧壁延伸出容纳腔，而出液管212也可沿侧板120内侧壁延伸出容纳腔，使液冷管200与外部的连接结构置于容纳腔外，简化动力电池底托在容纳腔内的连接结构。
进一步地，第一连接管2141、第二连接管2142和第三连接管2143的高度均低于所述侧板120的高度，这样，可避免第一连接管2141、第二连接管2142和第三连接管2143对汽车底部的抵顶而妨碍动力电池底托装配至电动汽车底部。
进一步地，贴合管213的布置路径迂回弯曲设置。基于此，通过贴合管213的迂回弯曲设置，可以增加液冷管200与动力电池组底面的接触面，增加液冷管200与动力电池组底面的热交换面积，提高液冷管200与动力电池组的热交换效率，进而提高液冷管200的散热效率。其中，对于贴合管213的布置路径是如何迂回弯曲设置，根据实际产品的形状，以及动力电池组的主要散热点进行布置即可，如M型、U型或S型等。
进一步地，进液管211、出液管212、贴合管213、第一连接管2141、第二连接管2142和第三连接管2143一体设置。这样，通过一体设置，可减少液冷管200引出的焊接点或连接点，有利于提高液冷管200结构的稳定性、安全性和耐久性。
进一步地，进液管211、出液管212、贴合管213、第一连接管2141、第二连接管2142和第三连接管2143均呈扁状管设置。基于此，进液管211、出液管212、贴合管213、第一连接管2141、第二连接管2142和第三连接管2143均可通过平直面与底板110、侧板120贴合，这样，一方面，在保证液冷管200相同流量的情况下，有利于节省空间，另一方面，进液管211、出液管212、贴合管213、第一连接管2141、第二连接管2142和第三连接管2143均可通过另一平直面与动力电池组接触，有利于提高液冷管200与动力电池组的接触面积，从而提高液冷管200与动力电池组的热交换效率，进而提高液冷管200的散热效率。
如图2所示，横梁300与底板110一体设置。基于此，横梁300和底板110在生产过程中一并成型，这样，去除了横梁300与底板110的装配步骤，有利于提高装配效率。此外，横梁300与底板110一体设置，也有利于增加托盘100的承载负荷。
实施例二
如图3所示，本实施例二与实施例一的区别在于连接管组214，具体地，连接管组214包括两条汇流管2144，其中，一汇流管2144与进液管211连通，另一汇流管2144与出液管212连通，两汇流管2144跨设于各自所经过的横梁300，至少两贴合管213的两端均分别与两汇流管2144连通。具体的，贴合管213的一端与一个汇流管2144连通，另一端与另一个汇流管2144连通；同时，上述贴合管213包括至少两个，这样，至少两贴合管213实现并联设置，媒介在经一汇流管2144进入到并联设置的贴合管213时，都具有大致相同的温度，有利于平衡并联设置的贴合管213的吸热能力。其中，两汇流管2144凸起于贴合管213形成的平面，从而使液冷管200呈三维立体布置，部分临近汇流管2144的热量将由汇流管2144吸收，有利于提高液冷管200的散热效率。具体地，在本实施例中，各贴合管213分别铺设于一子底板111，且各贴合管213一管口与一汇流管2144连通，另一管口与另一汇流管2144连通。
进一步地，两相对设置的侧板120中，一侧板120的内壁面紧贴有一汇流管2144，另一侧板120的内壁面紧贴有另一汇流管2144。其中，通过进液管211、出液管212和两汇流管 2144贴合布置于侧板120内侧壁，也即是进液管211、出液管212和两汇流管2144均设置于容置腔腔壁，相比于进液管211、出液管212和两汇流管2144设置于容置腔腔底，动力电池组整体能够更靠近贴合管213，而贴合管213作为主要散热管件，越靠近贴合管213，越有利于提高散热效率。
进一步地，贴合管213呈扁状管设置。基于此，贴合管213均通过平直面底板110，一方面，在保证液冷管200相同流量的情况下，有利于节省空间，另一方面，贴合管的另一平直面与动力电池组接触，有利于提高液冷管200与动力电池组的接触面积，从而提高液冷管200与动力电池组的热交换效率，进而提高液冷管200的散热效率。
实施例三
本实施例三与实施例二的区别在于连接管组，连接管组还包括用于连接两贴合管的第四连接管，第四连接管跨设于其经过的横梁，第四连接管至少设有一条，也即是，至少两贴合管串联后，才连接至汇流管，而不是直接连接至两汇流管，基于此结构，使得液冷管具有串联设置的贴合管，也具有并联设置的贴合管，这样，有利于综合利用贴合管串联设置和并联设置的优点，可根据具体的散热需求进行布置。
实施例四
本发明还提出一种动力电池模组，该动力电池模组包括动力电池底托，该动力电池底托的具体结构参照上述实施例一、二、三，由于本动力电池模组采用了上述所有实施例一、二、三的全部技术方案，因此同样具有上述实施例一、二、三的技术方案所带来的所有有益效果，在此不再一一赘述。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换或改进等，均应包含在本发明的保护范围之内。

Claims (14)

  1. 一种动力电池底托，用于承托动力电池组，包括托盘以及安装于所述托盘的液冷管，其特征在于，所述托盘包括底板和围绕所述底板四周设置的侧板，所述底板和所述侧板共同形成用于容纳动力电池组的容纳腔，所述底板上至少设置有一条横梁，所述横梁将所述底板至少分割成两块子底板，所述液冷管至少铺设于一个所述子底板上，且所述液冷管跨设于其经过的横梁。
  2. 如权利要求1所述的动力电池底托，其特征在于，所述液冷管包括进液管、出液管、贴合管以及用于连接所述进液管、所述出液管和所述贴合管的连接管组，所述连接管组跨设于其经过的横梁，至少两个所述子底板铺设有所述贴合管。
  3. 如权利要求2所述的动力电池底托，其特征在于，所述连接管组包括连接所述进液管和所述贴合管的第一连接管、连接两个所述贴合管的第二连接管以及连接所述出液管和所述贴合管的第三连接管，所述第一连接管、所述第二连接管和所述第三连接管均跨设于其经过的横梁，所述第二连接管至少设有一条。
  4. 如权利要求3所述的动力电池底托，其特征在于，所述第一连接管、所述第二连接管和所述第三连接管贴合布置于所述侧板内侧壁。
  5. 如权利要求3所述的动力电池底托，其特征在于，所述第一连接管、所述第二连接管和所述第三连接管的高度均低于所述侧板的高度。
  6. 如权利要求3所述的动力电池底托，其特征在于，所述进液管、所述出液管、所述贴合管、所述第一连接管、所述第二连接管和所述第三连接管一体设置。
  7. 如权利要求2所述的动力电池底托，其特征在于，所述连接管组包括两条汇流管，一条所述汇流管与所述进液管连通，另一条所述汇流管与所述出液管连通，两条所述汇流管跨设于各自所经过的横梁，至少两个所述贴合管的两端均分别与两条所述汇流管连通。
  8. 如权利要求7所述的动力电池底托，其特征在于，所述连接管组还包括用于连接两个所述贴合管的第四连接管，所述第四连接管跨设于其经过的横梁，所述第四连接管至少设有一条。
  9. 如权利要求7所述的动力电池底托，其特征在于，两个相对设置的所述侧板中，一个所述侧板的内壁面紧贴有一条所述汇流管，另一个所述侧板的内壁面紧贴有另一条所述汇流管。
  10. 如权利要求2至8中任一项所述的动力电池底托，其特征在于，所述贴合管的布置路径迂回弯曲设置。
  11. 如权利要求2至8中任一项所述的动力电池底托，其特征在于，所述进液管贴合布置于所述侧板内侧壁或沿所述侧板内侧壁延伸出所述容纳腔；
    和/或，所述出液管贴合布置于所述侧板内侧壁或沿所述侧板内侧壁延伸出所述容纳腔。
  12. 如权利要求2至8中任一项所述的动力电池底托，其特征在于，所述贴合管呈扁状管设置。
  13. 如权利要求1至8中任一项所述的动力电池底托，其特征在于，所述横梁与所述底板一体设置。
  14. 一种动力电池模组，其特征在于，包括如权利要求1至13中任一项所述的动力电池底托。
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