WO2024045891A1 - 电池包、车身结构和车辆 - Google Patents

电池包、车身结构和车辆 Download PDF

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Publication number
WO2024045891A1
WO2024045891A1 PCT/CN2023/105933 CN2023105933W WO2024045891A1 WO 2024045891 A1 WO2024045891 A1 WO 2024045891A1 CN 2023105933 W CN2023105933 W CN 2023105933W WO 2024045891 A1 WO2024045891 A1 WO 2024045891A1
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WO
WIPO (PCT)
Prior art keywords
pipeline
battery pack
channel
housing
assembly
Prior art date
Application number
PCT/CN2023/105933
Other languages
English (en)
French (fr)
Inventor
潘福礼
于江
周锦波
毛韵
牛洪海
廖丁衍
秦超
Original Assignee
浙江极氪智能科技有限公司
浙江吉利控股集团有限公司
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 浙江极氪智能科技有限公司, 浙江吉利控股集团有限公司 filed Critical 浙江极氪智能科技有限公司
Publication of WO2024045891A1 publication Critical patent/WO2024045891A1/zh

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • B60L50/66—Arrangements of batteries
    • 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
    • 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
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • 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 present application relates to the field of vehicle technology, and in particular to a battery pack, a body structure and a vehicle.
  • This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a battery pack that helps to reduce the weight of the vehicle body and increase the vehicle's endurance. At the same time, the pipeline layout of the vehicle is optimized, the assembly difficulty is low, the sealing performance is good, and the noise is low.
  • This application also proposes a vehicle body structure with the above-mentioned battery pack.
  • This application also proposes a vehicle with the above-mentioned body structure.
  • the battery pack according to the first aspect of the present application includes: a casing, the top wall of which forms a vehicle body floor; an electric core, which is disposed in the casing, and at least part of the inner wall of the casing faces away from The direction of the battery core is convex to form a pipeline channel; a pipeline assembly, the pipeline assembly is arranged in the pipeline channel, and the pipeline assembly is suitable for communicating with external pipelines.
  • the top wall of the casing is used as the body floor, which saves the need to set up a separate body floor and saves money. Save more space to expand the battery pack, thereby increasing the vehicle's endurance, and bulge at least part of the inner wall of the casing away from the battery core to form a pipeline channel, and arrange the pipeline components of the vehicle in the pipeline channel.
  • the casing includes: a casing main body defining an accommodating cavity with an open top, and the battery core is disposed in the accommodating cavity; and a top cover that covers the The open end of the accommodation cavity, the top cover constitutes the vehicle body floor, and the pipeline channel is formed by at least part of the inner wall of the top cover protruding in a direction away from the battery core.
  • pipeline channel extends in the front-to-back direction and penetrates the top cover.
  • the width of the pipeline channel gradually decreases in the direction from bottom to upward, and the top wall of the pipeline channel is formed into a plane.
  • the battery pack further includes: a partition that forms the bottom wall of the pipeline channel, and the partition is used to separate the pipeline assembly and the battery core.
  • the barrier layer includes: a heat insulation layer and an adhesive layer stacked up and down.
  • the heat insulation layer is suitable for blocking the bottom end of the pipeline channel, and the adhesive layer is used for bonding all the pipes.
  • the heat insulation layer and the top of the battery core are suitable for blocking the bottom end of the pipeline channel, and the adhesive layer is used for bonding all the pipes.
  • the battery pack further includes: a joint assembly.
  • the two joint assemblies include two.
  • the two joint assemblies are respectively connected to the front and rear ends of the pipeline assembly.
  • the two joint assemblies They are respectively provided at the front and rear ends of the shell body, or the two joint assemblies are respectively provided at the front and back ends of the top cover, and the joint assemblies are suitable for blocking the pipeline channel.
  • the joint assembly includes a mounting frame and a plurality of joints.
  • the mounting frame is provided with a plurality of through holes corresponding to the plurality of joints, and each joint is passed through the corresponding through hole.
  • each of the joints is suitable for connecting one of the pipelines in the pipeline assembly with a corresponding external pipeline.
  • the mounting bracket is detachably connected to the side wall of the shell body along the front and rear direction
  • the joint assembly further includes: a first sealing member, the first sealing member is disposed on the shell body along the front and rear direction. between the side wall and the mounting bracket; and/or, the joint assembly further includes: a second sealing member, the second sealing member is provided between the joint and the mounting bracket.
  • a vehicle body structure includes: a floor frame and the battery pack according to the first aspect of the present application, and the top wall of the housing is connected to the floor frame.
  • the vehicle body structure of the present application by arranging the battery pack in the above embodiment, the overall weight can be reduced, the vehicle body structure can be simplified, the space occupied by the body floor and accessories can be used to expand the battery pack capacity, and improve the vehicle's endurance.
  • the floor frame includes a central channel beam extending in the front-to-back direction and arched upward
  • the housing includes a top cover
  • the middle channel beam fits the top cover and is vertically opposite to the pipeline channel.
  • a second sealing member is provided between the floor frame and the housing, and the second sealing member extends along the circumference of the housing.
  • a vehicle according to the third aspect of the present application includes a vehicle body structure according to the second aspect of the present application.
  • the overall weight is lighter and the driving range is increased.
  • Figure 1 is an exploded view of a battery pack according to an embodiment of the present application
  • Figure 2 is a cross-sectional view of one location of the battery pack shown in Figure 1;
  • Figure 3 is a cross-sectional view of the battery pack shown in Figure 1 at another position.
  • the cross-sections in Figures 2 and 3 have different positions in the left and right directions of the battery pack;
  • FIG. 4 is a schematic diagram of the battery pack shown in FIG. 1 from another angle.
  • Shell 1 top cover 11, shell main body 12, accommodation cavity 121,
  • Pipe assembly 4 connector assembly 5
  • mounting bracket 51 connector 52
  • Interlayer 6 heat insulation layer 61, adhesive layer 62, first seal 7.
  • the battery pack 100 according to the first embodiment of the present application is described below with reference to FIGS. 1-4 .
  • a battery pack 100 includes: a casing 1 , a battery core 2 and a pipeline assembly 4 .
  • the top wall of the housing 1 can constitute the vehicle body floor.
  • the vehicle no longer has a separate vehicle body floor independent of the battery pack 100, but uses the top wall of the housing 1 of the battery pack 100 as the vehicle body floor.
  • the space occupied by the vehicle body floor is saved to increase the capacity of the battery pack 100 and thereby increase the vehicle's driving range.
  • the battery core 2 may be disposed in the housing 1, and at least part of the inner wall of the housing 1 protrudes away from the battery core 2 to form a
  • the pipeline channel 3 can be, for example, a portion of the top wall of the housing 1 that is arched upward to form a pipeline channel 3 on the inner wall of the housing 1 that opens toward the battery core 2, or it can be a side wall of the housing 1 facing away from the battery core. 2 is arched in the direction of 2 to form a pipeline channel 3 opening toward the battery core 2 on the inner wall of the housing 1.
  • the application is not limited to this, and the specific location of the pipeline channel 3 can be reasonably selected according to actual needs.
  • the pipeline assembly 4 may include suspension air pipes, brake pipes, coolant pipes, and other pipelines or wiring harnesses. It is understood that the pipeline assembly 4 here may include pipelines related to the battery pack 100 (such as power supply wiring harness or coolant pipes, etc. ), may also include pipelines of other vehicle systems other than the pipelines related to the battery pack 100, and of course, it may be only one of them.
  • the pipeline assembly 4 is arranged in the pipeline channel 3, and the pipeline assembly 4 is suitable for communicating with external pipelines.
  • the top wall of the casing 1 is used as the vehicle body floor, which eliminates the need to set up a separate vehicle body floor and saves more space to expand the battery pack 100, thus increasing the vehicle endurance.
  • At least part of the inner wall of the housing 1 bulges away from the battery core 2 to form a pipeline channel 3.
  • Arranging the pipeline assembly 4 of the vehicle in the pipeline channel 3 can optimize the pipeline layout inside the vehicle and prevent the pipeline assembly 4 from being arranged in the battery.
  • the occupied space for battery cells 2 affects the battery capacity and battery cell safety, which reduces the difficulty of assembly. It can also solve the problem of exposing the pipeline assembly 4 to the outside of the battery pack 100 or the passenger compartment on the upper side of the floor.
  • the pipeline assembly 4 can be better protected to avoid problems such as brake failure due to damage to the pipeline when the vehicle collides.
  • the housing 1 may include: a housing body 12 and a top cover 11 .
  • the main body 12 of the shell can define an accommodating cavity 121 with an open top.
  • the battery core 2 is disposed in the accommodating cavity 121.
  • the top cover 11 covers the open end of the accommodating cavity 121 so that the accommodating cavity 121 forms a closed cavity.
  • the top cover 11 The vehicle body floor can be formed, and the pipeline channel 3 is formed by at least part of the inner wall of the top cover 11 protruding in a direction away from the battery core 2.
  • the inner wall here refers to the side wall of the top cover 11 facing the battery core 2 (shown in Figure 3
  • the bottom wall of the top cover 11 for example, part of the inner wall of the center position of the top cover 11 in the left-right direction protrudes upward to form a pipeline channel 3.
  • the pipeline channel 3 can extend in a straight line along the front and rear direction, or can also be curved or curved in the front and rear direction. By extending the polyline, the shape of the pipeline channel 3 can be reasonably arranged according to the direction of the pipeline, and there are no specific restrictions here.
  • the pipeline channel 3 is located on the upper side of the battery cell 2, which can prevent the pipeline channel 3 from occupying the space used to place the battery cell 2, which is conducive to making full use of the internal space of the battery pack 100. Moreover, since the internal space of the battery pack 1 is Enclosed space, it can significantly reduce the noise generated when gas or liquid flows in pipeline components and improve the NVH performance of the vehicle.
  • the pipeline channel 3 can extend in the front-to-back direction and penetrate the top cover 11.
  • the pipeline assembly 4 can be connected to corresponding external pipelines from the front and rear ends of the pipeline channel 3 respectively.
  • the structure of the top cover 11 is simple and easy to manufacture.
  • the width of the pipeline channel 3 gradually decreases in the direction from bottom to upward.
  • the pipeline channel 3 has a top wall and side walls connected to the left and right sides of the top wall.
  • the two side walls Walls can all be oriented towards each other as a whole
  • the direction of the pipeline extends obliquely, and the arc transition can be made between the top wall and the two side walls.
  • the pipeline channel 3 is formed into an arched structure.
  • the arched structure can increase the structural strength of the middle channel beam and help better protect the equipment.
  • the pipeline assembly 4 in the pipeline channel 3, and the top wall of the pipeline channel 3 is formed into a plane, which can facilitate the connection between the top cover 11 as the vehicle body floor and the floor frame part of the vehicle body structure, such as the center channel beam.
  • multiple reinforcing ribs are formed on the peripheral wall of the pipeline channel 3.
  • the multiple reinforcing ribs can not only increase the structural strength of the pipeline channel 3, but also improve the overall structural strength of the top cover 11, thereby Better protect pipeline components 4 and battery cells 2.
  • multiple fixing plates may be formed in the pipeline channel 3.
  • multiple fixing plates are parallel to each other and arranged at intervals along the length direction (ie, front and rear direction) of the pipeline channel 3, and each The fixing plate can be provided with a plurality of fixing holes corresponding to the multiple pipelines in the pipeline assembly 4, and the multiple fixing holes on each fixing plate can be arranged at intervals along the left and right directions, and the multiple fixing plates are used for
  • the fixing holes passing through the same pipeline are opposite to each other in the front and back direction, and each pipeline passes through the fixing holes on multiple fixing plates in the front and back direction.
  • it is convenient to separate different pipelines for example, to transport gas and The pipelines transporting liquids are separated, or the high-temperature pipelines are separated from the low-temperature pipelines, so as to better fix and protect the pipeline components 4.
  • the battery pack 100 may further include: a separator 6 .
  • the partition 6 can constitute the bottom wall of the pipeline channel 3, and the partition 6 is used to separate the pipeline assembly 4 and the battery core 2.
  • the battery core 2 can be better protected, and the battery core 2 can be better protected.
  • the barrier 6 helps to reduce damage to the pipeline assembly 4 by high-temperature and high-pressure gas.
  • the pipeline assembly 4 leaks air and liquid, it will also The gas and liquid can be separated from the battery core 2 to prevent secondary accidents.
  • the insulation layer 6 may include: a heat insulation layer 61 and an adhesive layer 62.
  • the heat insulation layer 61 and the adhesive layer 62 are stacked in the up and down direction.
  • the heat insulation layer 61 is suitable for blocking pipelines.
  • the adhesive layer 62 is used to bond the heat insulation layer 61 and the top of the battery core 2. In this way, the adhesive layer 62 can be used to fix the heat insulation layer 61, and the heat insulation layer 61 can operate the battery core 2.
  • the generated heat is isolated from the pipeline channel 3 to prevent the pipeline assembly 4 from being affected by continuous heating, which may cause the working life and working reliability to be affected.
  • the battery pack 100 may further include: a joint assembly 5.
  • the two joint assemblies 5 include two, and the two joint assemblies 5 are respectively connected to the front and rear ends of the pipeline assembly 4.
  • Two joint assemblies 5 are respectively provided at the front and rear ends of the shell body 12 , or two joint assemblies 5 are respectively provided at the front and rear ends of the top cover 11 .
  • the joint assemblies 5 are suitable for blocking the pipeline channel 3 . In this way, the pipeline assembly 4 in the pipeline channel 3 can be easily connected to the corresponding external pipeline, and at the same time, the sealing performance in the pipeline channel 3 can be ensured to prevent liquid from leaking out.
  • the pipeline assembly 4 may include a plurality of pipelines arranged at intervals.
  • the pipeline assembly 4 may include a suspension air pipe, a brake pipe, a coolant pipe, and other pipelines.
  • the joint assembly 5 may include a mounting bracket 51 and a plurality of joints 52 .
  • the mounting bracket 51 may form a part of the housing 1 .
  • the mounting bracket 51 may form a part of the housing 1 .
  • a part of the side wall along the front and rear direction, or the mounting bracket 51 can also be detachably connected to the side wall of the housing 1 along the front and rear direction.
  • the mounting bracket 51 is provided with a plurality of through holes corresponding to the plurality of joints 52.
  • each joint 52 is penetrated through the corresponding through hole, and each joint 52 is suitable for connecting one of the pipelines in the pipeline assembly 4 with the corresponding external pipeline. In this way, the pipeline assembly 4 provided in the battery pack 100 can be easily connected. Connected to the corresponding external pipeline.
  • At least one pipeline in the pipeline assembly 4 can be a fire extinguishing pipe, and fire extinguishing agent can be stored in the fire extinguishing pipe.
  • fire extinguishing agent can be stored in the fire extinguishing pipe.
  • the mounting bracket 51 is detachably connected to the side wall of the shell body 12 in the front-rear direction.
  • the mounting bracket 51 can be bolted to the shell body 12
  • the joint assembly 5 can also include: a first seal 7 , the first sealing member 7 is provided between the side wall of the housing body 12 in the front-rear direction and the mounting bracket 51 .
  • the first sealing member 7 can better fill the installation gap between the case body 12 and the mounting bracket 51 , thereby improving the sealing performance of the connection position between the first sealing member 7 and the case body 12 , which is beneficial to improving the battery pack 100 . Sealing performance.
  • the joint assembly 5 may further include: a second sealing member (not shown), the second sealing member is disposed between the joint 52 and the mounting bracket 51, so that the second sealing member can be more easily
  • the installation gap between the joint 52 and the mounting bracket 51 can be well filled.
  • the second sealing member can be provided between the outer peripheral wall of the joint 52 and the perforated inner peripheral wall of the mounting bracket 51, which can improve the bracket of the joint 52 and the mounting bracket 51. Excellent sealing performance to prevent air or liquid from leaking out.
  • the vehicle body structure according to the embodiment of the present application may include: a floor frame and the battery pack 100 in the above embodiment.
  • the top wall of the housing 1 is connected to the floor frame.
  • the floor frame may include an outer frame structure composed of a vehicle body front wall, left and right door sills, etc., and an internal center channel beam and other beam structures.
  • the peripheral edge of the top wall of the casing 1 is connected to the outer frame structure, and the middle part of the top wall of the casing 1 in the left and right direction is connected to beam structures such as the central channel beam.
  • the weight of the vehicle body can be reduced, the space occupied by the vehicle body floor and accessories can be saved, and more space in the height direction can be saved to expand the battery.
  • the 100% capacity of the battery pack helps to increase the energy density of the battery pack and improve the vehicle's battery life.
  • the vehicle body structure of the embodiment of the present application by arranging the battery pack 100 in the above embodiment, the overall weight can be reduced, the vehicle body structure can be simplified, and the space occupied by the vehicle body floor and accessories can be used to expand the capacity of the battery pack 100, which can help improve
  • the battery pack has an energy density of 100% to improve vehicle endurance.
  • the floor frame includes a middle channel beam extending in the front-rear direction and arched upward.
  • the housing 1 includes a top cover 11 , and the middle channel beam is fit with the top cover 11 and is opposite to the pipeline channel 3 up and down. Since The main function of both ends of the middle channel is to transmit external force in the longitudinal direction, that is, the front-rear direction when a vehicle collides. By placing the middle channel beam and the pipeline channel 3 up and down, the pipeline channel 3 and the internal pipeline components 4 can be better protected in the event of a vehicle collision. , improve vehicle safety.
  • a second sealing member is provided between the floor frame and the housing 1, and the second sealing member extends along the circumference of the housing 1.
  • the second sealing member may be provided on the periphery of the top cover 11, The second sealing member is located between the lower surface of the floor frame and the upper surface of the top cover 11.
  • a vehicle according to an embodiment of the third aspect of the present application is described below.
  • a vehicle according to an embodiment of the present application includes the vehicle body structure in the above embodiment.
  • the overall weight is lighter and the driving range is increased.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • plurality means two or more than two, unless otherwise explicitly and specifically limited.
  • connection In this application, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two elements or an interaction between two elements .
  • fixing and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two elements or an interaction between two elements .
  • the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • references to the terms “one embodiment,” “some embodiments,” “an example,” “specific examples,” or “some examples” or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • Sustainable Energy (AREA)
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  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

一种电池包(100)、车身结构和车辆，电池包(100)包括：壳体(1)，壳体(1)的顶壁构成车身地板；电芯(2)，电芯(2)设于壳体(1)内，壳体(1)的至少部分内壁朝向远离电芯(2)的方向凸起以形成管线通道(3)；管线组件(4)，管线组件(4)布置于管线通道(3)，管线组件(4)适于与外部管路连通。

Description

电池包、车身结构和车辆
相关申请的交叉引用
本申请基于申请号为202211059687.7，申请日为2022年08月29日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及车辆技术领域，尤其是涉及一种电池包、车身结构和车辆。
背景技术
目前纯电架构车型均采用大平板动力电池包，将电池包集成到下车体(底盘或车身)。而为了提高整包电量，通常会对车身结构进行一定的改进，其中，对于地板下部的制动管、空气弹簧气管、后电机冷却水管及部分线束的布置方式的改进，现有的技术方案主要有：管线集成布置于门槛梁内部，这种方式会导致车辆侧碰时管线损坏，制动失效，还影响侧碰时门槛梁的馈缩变形，并且维修困难；或者，将管线路布置于电池包或地板上部，乘员舱内部，但这种方式会由于管路内液体的流动声音，影响整车NVH性能，并且，装配工艺差，管线路进出乘员舱的密封难度大、成本高；此外，还将管线路布置于电池包内部的加强梁内，这种方式会占用电芯的布置空间，并且外部管路穿过电池包时装配困难。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请在于提出一种电池包，所述电池包有助于减轻车体重量，增加车辆续航，同时，使得车辆的管线布局得到优化，装配难度低，密封性好，噪音低。
本申请还提出一种具有上述电池包的车身结构。
本申请还提出一种具有上述车身结构的车辆。
根据本申请第一方面的电池包，包括：壳体，所述壳体的顶壁构成车身地板；电芯，所述电芯设于所述壳体内，所述壳体的至少部分内壁朝向远离所述电芯的方向凸起以形成管线通道；管线组件，所述管线组件布置于所述管线通道，所述管线组件适于与外部管路连通。
根据本申请的电池包，将壳体的顶壁作为车身地板，可以省去单独设置车身地板，节 省出更多的空间以对电池包进行扩容，进而增加车辆续航，而将壳体的至少部分内壁朝向远离电芯的方向凸起以形成管线通道，将车辆的管线组件布置于管线通道内，可以优化车辆内部的管线布局，避免管线组件布置于电池包内部的加强梁内时，占用电芯的安置空间影响电池容量以及电芯安全性，降低了装配难度，也可以解决将管线组件暴露在电池包外侧或地板上侧的乘员舱内导致的管线进出乘员舱的密封难度大、噪音高、成本高的问题。
根据本申请的一些实施例，所述壳体包括：壳主体，所述壳主体限定出顶部敞开的容纳腔，所述电芯设于所述容纳腔；顶盖，所述顶盖封盖所述容纳腔的敞开端，所述顶盖构成所述车身地板，所述管线通道由所述顶盖的至少部分内壁朝向远离所述电芯的方向凸起形成。
进一步地，所述管线通道沿前后方向延伸并贯穿所述顶盖。
在一些实施例中，在从下向上的方向上，所述管线通道的宽度逐渐减小，并且所述管线通道的顶壁形成为平面。
在一些实施例中，所述电池包还包括：隔层，所述隔层构成所述管线通道的底壁，所述隔层用于将所述管线组件和所述电芯分隔开。
进一步地，所述隔层包括：沿上下方向叠置的隔热层和胶粘层，所述隔热层适于封堵所述管线通道的底端，所述胶粘层用于粘接所述隔热层和所述电芯的顶部。
根据本申请的一些实施例，所述电池包还包括：接头组件，所述接头组件包括两个，两个所述接头组件分别与所述管线组件的前后两端相连，两个所述接头组件分别设于所述壳主体的前后两端，或者，两个所述接头组件分别设于所述顶盖的前后两端，所述接头组件适于封堵所述管线通道。
进一步地，所述接头组件包括安装架和多个接头，所述安装架上设有与多个所述接头一一对应的多个穿孔，每个所述接头均穿设于对应的所述穿孔，每个所述接头均适于连接所述管线组件中的其中一条管线与外部的对应管线。
再进一步地，所述安装架与所述壳主体沿前后方向的侧壁可拆卸连接，所述接头组件还包括：第一密封件，所述第一密封件设于所述壳主体沿前后方向的侧壁和所述安装架之间；和/或，所述接头组件还包括：第二密封件，所述第二密封件设于所述接头与所述安装架之间。
根据本申请第二方面的车身结构，包括：地板框架和根据本申请第一方面的电池包，所述壳体的顶壁与所述地板框架相连。
根据本申请的车身结构，通过设置上述实施例中的电池包，可以减轻整体重量，简化车身结构，利用被车身地板及附件所占用的空间来扩大电池包容量，提高车辆续航。
根据本申请的一些实施例，所述地板框架包括沿前后方向延伸且向上拱起的中通道梁， 所述壳体包括顶盖，所述中通道梁与所述顶盖贴合且与所述管线通道上下相对。
在一些实施例中，所述地板框架与所述壳体之间设有第二密封件，所述第二密封件沿所述壳体的周向延伸。
根据本申请第三方面的车辆，包括根据本申请第二方面的车身结构。
根据本申请的车辆，通过设置根据本申请第二方面所述的车身结构，使得整体重量更轻，且续航得到增加。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1是根据本申请实施例的电池包的爆炸图；
图2是图1中所示的电池包的一个位置的截面图；
图3是图1中所示的电池包的另一个位置的截面图，图2和图3中的截面在电池包的左右方向上的位置不同；
图4是图1中所示的电池包的另一个角度的示意图。
附图标记：
电池包100，
壳体1，顶盖11，壳主体12，容纳腔121，
电芯2，管线通道3，
管线组件4，接头组件5，安装架51，接头52，
隔层6，隔热层61，胶粘层62，第一密封件7。
具体实施方式
下面详细描述本申请的实施例，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，旨在用于解释本申请，而不能理解为对本申请的限制。
下面参考图1-图4描述根据本申请第一方面实施例的电池包100。
如图1所示，根据本申请实施例的电池包100，包括：壳体1、电芯2和管线组件4。
具体地，壳体1的顶壁可以构成车辆的车身地板，换言之，车辆不再单独设置独立于电池包100的车身地板，而是将电池包100的壳体1的顶壁作为车身地板，以节省出车身地板所占用的空间，用以增大电池包100的容量进而增加车辆续航。
电芯2可以设于壳体1内，壳体1的至少部分内壁朝向远离电芯2的方向凸起以形成 管线通道3，例如，可以是壳体1的顶壁的部分向上拱起以在壳体1的内壁形成朝向电芯2开口的管线通道3，也可以是壳体1的侧壁向背离电芯2的方向拱起以在壳体1的内壁形成朝向电芯2开口的管线通道3，当然本申请不限于此，管线通道3的具体位置可以根据实际需要合理选择。
管线组件4可以包括悬架气管、制动管、冷却液管以及其他管路或线束，可以理解地，此处的管线组件4既可以包括电池包100相关管线(例如供电线束或冷却液管等)，也可以包括除电池包100相关管线以外的车辆其他系统的管线，当然也可以仅是其中的一种。管线组件4布置于管线通道3，管线组件4适于与外部管路连通。
根据本申请实施例的电池包100，将壳体1的顶壁作为车身地板，可以省去单独设置车身地板，节省出更多的空间以对电池包100进行扩容，进而增加车辆续航，而将壳体1的至少部分内壁朝向远离电芯2的方向凸起以形成管线通道3，将车辆的管线组件4布置于管线通道3内，可以优化车辆内部的管线布局，避免管线组件4布置于电池包100内部的加强梁内时，占用电芯2的安置空间影响电池容量以及电芯安全性，降低了装配难度，也可以解决将管线组件4暴露在电池包100外侧或地板上侧的乘员舱内导致的管线进出乘员舱的密封难度大、噪音高、成本高的问题，此外，还可以更好地保护管线组件4，避免车辆发生撞击时因管线损坏而导致的制动失效等问题发生。
根据本申请的一些实施例，参考图1和图2，壳体1可以包括：壳主体12和顶盖11。其中，壳主体12可以限定出顶部敞开的容纳腔121，电芯2设于容纳腔121内，顶盖11封盖容纳腔121的敞开端，以使容纳腔121构成封闭腔体，顶盖11可以构成车身地板，管线通道3由顶盖11的至少部分内壁朝向远离电芯2的方向凸起形成，这里的内壁指的是顶盖11朝向电芯2的侧壁(图3中所示的顶盖11的底壁)，例如，顶盖11在左右方向上的中心位置的部分内壁向上凸起形成管线通道3，管线通道3可以沿前后方向呈直线延伸，也可以沿前后方向呈曲线或折线延伸，管线通道3的形状可以根据管线走向进行合理布置，这里不做具体限制。如此，使得管线通道3处于电芯2的上侧，可以避免管线通道3占用用于放置电芯2的空间，有利于充分利用电池包100的内部空间，并且，由于电池包1的内部空间为封闭空间，因此可以显著减小管线组件中的气体或液体流动时产生的噪音，改善车辆的NVH性能。
进一步地，参考图1和图4，管线通道3可以沿前后方向延伸并贯穿顶盖11，这样，管线组件4可以分别从管线通道3的前端和后端与外部的对应管线连接，同时，也使得顶盖11的结构简单，便于制造。
在一些实施例中，参考图4，在从下向上的方向上，管线通道3的宽度逐渐减小，例如，管线通道3具有顶壁和连接在顶壁左右两侧的侧壁，两个侧壁可以整体上均朝向靠近彼此 的方向倾斜延伸，顶壁与两个侧壁之间可以圆弧过渡，如此，管线通道3形成为拱形结构，拱形结构可以增加中通道梁的结构强度，有助于更好地保护设于管线通道3内的管线组件4，而管线通道3的顶壁形成为平面，可以便于作为车身地板的顶盖11和车身结构的地板框架部分例如中通道梁的连接。
在一些实施例中，管线通道3的周壁形成有多个加强筋(图未示出)，多个加强筋既可以增加管线通道3的结构强度，又可以提高顶盖11整体的结构强度，从而更好地保护管线组件4和电芯2。
在一些实施例中，管线通道3内可以形成有多个固定板(图未示出)，例如，多个固定板相互平行且沿管线通道3的长度方向(即前后方向)间隔布置，每个固定板上可以开设有与管线组件4中的多根管线一一对应的多个固定孔，并且每个固定板上的多个固定孔可以沿左右方向间隔布置，多个固定板上用于穿过同一根管线的固定孔沿前后方向相对，每个管线均沿前后方向依次穿过多个固定板上的固定孔，这样，便于将不同的管线分隔开，例如，将传输气体和传输液体的管线分隔开，或者将高温的管线与低温的管线分隔开，从而更好地固定和保护管线组件4。
在一些实施例中，参考图1-图3，电池包100还可以包括：隔层6。具体而言，隔层6可以构成管线通道3的底壁，隔层6用于将管线组件4和电芯2隔开，如此，既可以更好地保护电芯2，又可以更好地保护管线组件4，例如，当电芯2发生热失控时，隔层6有助于降低高温高压气体对管线组件4的损伤，而当车辆发生撞击，使管线组件4发生漏气漏液时，也可以将气液与电芯2隔开，防止引起次生事故。
进一步地，参考图1-图3，隔层6可以包括：隔热层61和胶粘层62，隔热层61和胶粘层62沿上下方向叠置，隔热层61适于封堵管线通道3的底端，胶粘层62用于粘接隔热层61和电芯2的顶部，如此，胶粘层62可以用于固定隔热层61，隔热层61可以将电芯2工作产生的热量与管线通道3隔开，以防止管线组件4因持续受热而导致工作寿命和工作可靠性受到影响。
根据本申请的一些实施例，参考图1和图2，电池包100还可以包括：接头组件5，接头组件5包括两个，两个接头组件5分别与管线组件4的前后两端相连，两个接头组件5分别设于壳主体12的前后两端，或者，两个接头组件5分别设于顶盖11的前后两端，接头组件5适于封堵管线通道3。这样，可以方便地将管线通道3内的管线组件4与外部的相应管线相连，同时，确保管线通道3内的密封性，防止有液体外渗。
进一步地，参考图1和图4，管线组件4可以包括间隔布置的多根管线，例如，管线组件4可以包括悬架气管、制动管、冷却液管以及其他管线。接头组件5可以包括安装架51和多个接头52，安装架51可以构成壳体1的一部分，例如，安装架51可以构成壳体1的 沿前后方向的侧壁的一部分，或者，安装架51也可以可拆卸地连接在壳体1沿前后方向的侧壁上，安装架51上设有与多个接头52一一对应的多个穿孔，每个接头52均穿设于对应的穿孔，每个接头52均适于连接管线组件4中的其中一条管线与外部的对应管线，如此，可以便于将设于电池包100内的管线组件4和外部的对应管线相连通。
在其他的一些实施例中，管线组件4中的至少一个管路可以为灭火管，灭火管内可以存储有灭火剂，这样，在电芯2发生热失控且高温高压气体蔓延至管线通道3时，灭火管被烧穿并释放灭火剂，从而保护管线组件4中的其他管线，防止车辆的制动等系统失效。
根据本申请的一些实施例，安装架51与壳主体12沿前后方向的侧壁可拆卸连接，例如，安装架51可以与壳主体12螺栓连接，接头组件5还可以包括：第一密封件7，第一密封件7设于壳主体12沿前后方向的侧壁和安装架51之间。如此，通过第一密封件7可以较好地填充壳主体12与安装架51之间的安装间隙，从而可以提升第一密封件7与壳主体12连接位置的密封性，利于提升电池包100的密封性能。
根据本申请的一些实施例，接头组件5还可以包括：第二密封件(图未示出)，第二密封件设于接头52和安装架51之间，如此，通过第二密封件可以较好地填充接头52和安装架51之间的安装间隙，例如，第二密封件可以设于接头52的外周壁与安装架51的穿孔的内周壁之间，可以提高接头52和安装架51支架的密封性，防止有气或液外渗。
下面描述根据本申请第二方面实施例的车身结构。
根据本申请实施例的车身结构，可以包括：地板框架和上述实施例中的电池包100。
具体地，壳体1的顶壁与地板框架相连，例如，地板框架可以包括由车身前围和左右门槛等组成的外侧边框结构以及内部的中通道梁等梁结构。电池包100的壳体1顶壁作为车身地板时，将壳体1顶壁的周沿和外侧边框结构部分相连，将壳体1顶壁左右方向上的中部与中通道梁等梁结构相连。这样，与相关技术中在车身地板下侧设置电池包100的方式相比，可以减轻车身重量，节省出被车身地板及附件所占用的空间，在高度方向上省出更多的空间以扩大电池包100容量，有助于提升电池包100能量密度，提高车辆续航。
根据本申请实施例的车身结构，通过设置上述实施例中的电池包100，可以减轻整体重量，简化车身结构，利用被车身地板及附件所占用的空间来扩大电池包100容量，有助于提升电池包100能量密度，提高车辆续航。
根据本申请的一些实施例，地板框架包括沿前后方向延伸且向上拱起的中通道梁，壳体1包括顶盖11，中通道梁与顶盖11贴合且与管线通道3上下相对，由于中通道两端的主要作用是在车辆发生碰撞时沿纵向即前后方向传递外力，将中通道梁和管线通道3上下相对，在车辆发生碰撞时可以更好地保护管线通道3及内部的管线组件4，提高车辆的安全性。
在一些实施例中，地板框架与壳体1之间设有第二密封件，第二密封件沿壳体1的周向延伸，例如，第二密封件可以设于顶盖11的周沿，第二密封件位于地板框架的下表面和顶盖11的上表面之间，此时，电池包100壳体1的密封面与地板框架的密封面为同一平面，有利于提升电池包100的安装稳定性以及密封性。
下面描述根据本申请第三方面实施例的车辆。
根据本申请实施例的车辆，包括上述实施例中的车身结构。
根据本申请实施例的车辆，通过设置上述实施例中的车身结构，使得整体重量更轻，且续航得到增加。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接，还可以是通信；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (13)

  1. 一种电池包，其特征在于，包括：
    壳体，所述壳体的顶壁构成车身地板；
    电芯，所述电芯设于所述壳体内，所述壳体的至少部分内壁朝向远离所述电芯的方向凸起以形成管线通道；
    管线组件，所述管线组件布置于所述管线通道，所述管线组件适于与外部管路连通。
  2. 根据权利要求1所述的电池包，其特征在于，所述壳体包括：
    壳主体，所述壳主体限定出顶部敞开的容纳腔，所述电芯设于所述容纳腔；
    顶盖，所述顶盖封盖所述容纳腔的敞开端，所述顶盖构成所述车身地板，所述管线通道由所述顶盖的至少部分内壁朝向远离所述电芯的方向凸起形成。
  3. 根据权利要求2所述的电池包，其特征在于，所述管线通道沿前后方向延伸并贯穿所述顶盖。
  4. 根据权利要求2所述的电池包，其特征在于，在从下向上的方向上，所述管线通道的宽度逐渐减小，并且所述管线通道的顶壁形成为平面。
  5. 根据权利要求2所述的电池包，其特征在于，所述电池包还包括：隔层，所述隔层将所述管线组件和所述电芯分隔开，所述隔层构成所述管线通道的底壁。
  6. 根据权利要求5所述的电池包，其特征在于，所述隔层包括：沿上下方向叠置的隔热层和胶粘层，所述隔热层适于封堵所述管线通道的底端，所述胶粘层用于粘接所述隔热层和所述电芯的顶部。
  7. 根据权利要求2-6中任一项所述的电池包，其特征在于，所述电池包还包括：接头组件，所述接头组件包括两个，两个所述接头组件分别与所述管线组件的前后两端相连，两个所述接头组件分别设于所述壳主体的前后两端，或者，两个所述接头组件分别设于所述顶盖的前后两端，所述接头组件适于封堵所述管线通道。
  8. 根据权利要求7所述的电池包，其特征在于，所述接头组件包括安装架和多个接头，所述安装架上设有与多个所述接头一一对应的多个穿孔，每个所述接头均穿设于对应的所述穿孔，每个所述接头均适于连接所述管线组件中的其中一条管线与外部的对应管线。
  9. 根据权利要求8所述的电池包，其特征在于，所述安装架与所述壳主体沿前后方向的侧壁可拆卸连接，所述接头组件还包括：第一密封件，所述第一密封件设于所述壳主体沿前后方向的侧壁和所述安装架之间；和/或，所述接头组件还包括：第二密封件，所述第二密封件设于所述接头与所述安装架之间。
  10. 一种车身结构，其特征在于，包括：
    地板框架；
    电池包，所述电池包为根据权利要求1-9中任一项所述的电池包，所述壳体的顶壁与所述地板框架相连。
  11. 根据权利要求10所述的车身结构，其特征在于，所述地板框架包括沿前后方向延伸且向上拱起的中通道梁，所述壳体包括顶盖，所述中通道梁与所述顶盖贴合且与所述管线通道上下相对。
  12. 根据权利要求10所述的车身结构，其特征在于，所述地板框架与所述壳体之间设有第二密封件，所述第二密封件沿所述壳体的周向延伸。
  13. 一种车辆，其特征在于，包括：根据权利要求10-12中任一项所述的车身结构。
PCT/CN2023/105933 2022-08-29 2023-07-05 电池包、车身结构和车辆 WO2024045891A1 (zh)

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