WO2020098621A1 - 用于容纳电池模组的箱体及电池箱 - Google Patents

用于容纳电池模组的箱体及电池箱 Download PDF

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Publication number
WO2020098621A1
WO2020098621A1 PCT/CN2019/117361 CN2019117361W WO2020098621A1 WO 2020098621 A1 WO2020098621 A1 WO 2020098621A1 CN 2019117361 W CN2019117361 W CN 2019117361W WO 2020098621 A1 WO2020098621 A1 WO 2020098621A1
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WO
WIPO (PCT)
Prior art keywords
bottom plate
box
battery module
battery
grooves
Prior art date
Application number
PCT/CN2019/117361
Other languages
English (en)
French (fr)
Inventor
陈智明
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2020098621A1 publication Critical patent/WO2020098621A1/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • 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
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present application belongs to the technical field of energy storage equipment, and particularly relates to a box body and a battery box for accommodating battery modules.
  • Secondary batteries are more and more widely used in vehicles, processing and production machines, and communication equipment.
  • secondary batteries are usually used in groups, that is, battery modules are formed from single cells, and a plurality of battery modules are further combined and packaged through a box.
  • the bottom plate of the box body receives impact force from impact, etc., it will reduce the fixing stability of the battery module in the box body, and even destroy the safety distance between the battery module and the bottom plate of the box body, thereby bringing hidden safety risks.
  • this application provides a box for accommodating a battery module.
  • the box includes:
  • the casing includes a bottom plate and a side plate connected to the bottom plate, the bottom plate and the side plates surround to form an accommodation space, and the bottom plate is provided with a plurality of grooves opening toward the accommodation space;
  • the buffer assembly includes at least a first buffer member, and the first buffer member is disposed corresponding to the groove.
  • a buffer assembly is provided on the bottom plate of the box for accommodating the battery module, so that when the battery module is accommodated in the box, the buffer assembly is located between the battery module and the bottom plate.
  • the buffer assembly can absorb the impact force received by the bottom plate, thereby ensuring that the battery module has a high fixing stability and maintaining proper safety between the battery module and the chassis bottom plate The distance can improve the safety performance of the battery box adopting the box body.
  • the bottom plate may include opposite inner and outer surfaces, the groove is located on the inner surface, the first buffer member is filled in the groove, and the top surface of the first buffer member is flush with the inner surface ⁇ ⁇ ⁇ On the inner surface.
  • the grooves may be strip-shaped grooves, a plurality of grooves are spaced on the bottom plate and all extend in the same direction, and the first buffer member includes a plurality of elastic strips, respectively corresponding to each groove Groove settings.
  • the grooves may be block-shaped grooves, which are distributed at intervals on the bottom plate, and the first buffer member includes a plurality of elastic blocks, which are respectively provided for each groove.
  • a plurality of grooves may be distributed in a grid on the bottom plate, and the first buffer member is a mesh-shaped elastic body, corresponding to the grooves distributed in a grid.
  • the buffer assembly may further include a second buffer member disposed on a side of the first buffer member away from the bottom plate.
  • the second buffer member may include one or a plurality of elastic sheets distributed at intervals.
  • the elastic sheet may be provided with multiple through holes.
  • the second buffer member may further include a plurality of limit bars, and the plurality of limit bars are spaced on the outer peripheral side of the elastic sheet to define the distance between the battery module and the bottom plate.
  • a battery box including:
  • More than one battery module More than one battery module
  • the box body is used to accommodate more than one battery module, wherein the box body is a box body provided in one aspect of the present application, wherein the buffer component is located between the bottom plate and the battery module.
  • the battery box may further include an adhesive for fixing more than one battery module to the bottom plate.
  • the adhesive also acts as an insulation between the battery module and the bottom plate of the box body.
  • the buffer assembly between the battery module and the bottom plate can also protect the adhesive and prevent the adhesive from being broken or damaged due to the impact force.
  • the battery box can ensure that the battery module has high fixing stability, and that an appropriate safety distance and good insulation can be maintained between the battery module and the bottom plate of the box body, thereby improving the safety performance of the battery box.
  • FIG. 1 is a schematic diagram of an exploded structure of a battery box provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a casing provided by an embodiment of the present application.
  • FIG. 3 is a cross-sectional view of FIG. 2 along A-A.
  • FIG. 4 is a schematic diagram of an exploded structure of a cabinet provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another casing provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an exploded structure of another box provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of yet another casing provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a second buffer provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of another second buffer member provided by an embodiment of the present application.
  • FIG. 10 is a cross-sectional view of FIG. 2 along B-B.
  • FIG. 11 is a partially enlarged view of FIG. 10.
  • 211 bottom plate; 211a, inner surface; 211b, outer surface; 212, side plate; 213, accommodating space; 214, groove;
  • first buffer member 221, first buffer member; 222, second buffer member; 223, elastic piece; 224, limit bar; 225, through hole;
  • X length direction
  • Y width direction
  • any lower limit can be combined with any upper limit to form an unspecified range; and any lower limit can be combined with other lower limits to form an unspecified range, and likewise any upper limit can be combined with any other upper limit to form an unspecified range.
  • each point or single value between the end points of the range is included in the range.
  • each point or single numerical value may be combined with any other point or single numerical value as its own lower limit or upper limit or with other lower or upper limits to form an unspecified range.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a Disconnected, or integrally connected; either directly connected or indirectly connected through an intermediary.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a Disconnected, or integrally connected; either directly connected or indirectly connected through an intermediary.
  • FIG. 1 schematically shows an exploded structure of a battery box provided by an embodiment of the present application.
  • a battery box 100 provided by an embodiment of the present application includes a battery module 300 and a box 200 for accommodating the battery module 300.
  • a case 200 for accommodating a battery module 300 provided by an embodiment of the present application includes a housing 210 and a buffer assembly 220.
  • the housing 210 includes a bottom plate 211 and a side plate 212 connected to the bottom plate 211.
  • the bottom plate 211 and the side plate 212 surround to form an accommodation space 213.
  • the bottom plate 211 is provided with a plurality of grooves 214 opening toward the accommodation space 213.
  • the buffer assembly 220 includes at least a first buffer 221, and the first buffer 221 is disposed corresponding to the groove 114.
  • the housing 210 can be made of metal.
  • the metal casing 210 has high strength to protect the battery module 300.
  • the metal casing 210 also has a shielding function, which can ensure that the power transmission of the battery box 100 is not interfered by the outside world, and at the same time ensure the safety of the outside environment.
  • the housing 210 can also be made of plastic material.
  • the plastic casing 210 has higher mechanical properties and lower weight, which is beneficial to increase the energy density of the battery box 100.
  • a shielding layer may be provided in the housing 210.
  • the first cushioning member 221 uses an elastic material, such as thermosetting foam, thermoplastic foam, or other elastomeric polymer.
  • the battery module 300 is accommodated in the accommodating space 213 of the box 200 and is fixed by a fixing member.
  • the number of the battery modules 300 is one or more. When the number of the battery modules 300 is more than one, the plurality of battery modules 300 may be connected in series, in parallel, or mixed in series and parallel.
  • the battery module 300 includes a plurality of single cells, and the multiple single cells may be connected in series, in parallel, or in a series-parallel connection.
  • the unit battery is, for example, a prismatic battery, and of course, it may also have a cylindrical shape or the like, which is not limited herein.
  • the box 200 provided by the present application is provided with a buffer component 220 on the bottom plate 211, when the battery module 300 is accommodated in the box 200, the buffer component 220 is located between the battery module 300 and the bottom plate 211.
  • the buffer assembly 220 can absorb the impact force received by the bottom plate 211, thereby ensuring a high fixing stability of the battery module 300 and between the battery module 300 and the bottom plate 211 Maintaining an appropriate safety distance can improve the safety performance of the battery box 100.
  • the arrangement of the groove 214 can also enhance the overall strength of the bottom plate 211 without reducing the energy density of the battery case 100 (even increasing the energy density of the battery case 100).
  • the bottom plate 211 is less likely to be warped due to its own internal stress, thereby ensuring the flatness of the surface of the bottom plate 211 toward the accommodation space 213.
  • an adhesive (not shown) may be used to bond and fix the battery module 300 to the bottom plate 211 of the case 200. This can also reduce the use of metal parts in the box body 200, thereby helping to increase the energy density of the battery box 100.
  • the bottom plate 211 includes opposed inner and outer surfaces 211a and 211b, wherein the inner surface 211a is disposed toward the receiving space 213 and the outer surface 211b is disposed away from the receiving space 213.
  • An adhesive is applied to the inner surface 211a of the bottom plate 211 to bond and fix the battery module 300 to the bottom plate 211.
  • the above adhesive may be structural adhesives, such as epoxy structural adhesives, polyurethane structural adhesives, acrylic structural adhesives, silicone structural adhesives, modified silica gel, and the like.
  • the adhesive is an insulating material, insulation between the battery module 300 and the case 200 can be achieved. In this way, the insulating plate can be omitted, and the structure of the box 200 can be simplified.
  • the buffer assembly 220 is provided on the bottom plate 211 of the box 200, when the bottom plate 211 receives an impact from an impact, etc., the buffer assembly 220 absorbs the impact force received by the bottom plate 211, which can protect the adhesive and prevent adhesion The agent breaks due to brittleness. This can improve the stability of the battery module 300 bonding and fixing, and can maintain good insulation between the battery module 300 and the box body 200, thereby ensuring that the battery box 100 has a high safety performance.
  • the groove 214 is located on the inner surface 211a, and the first buffer 221 is filled in the groove 214.
  • the groove 214 can also accommodate excess adhesive squeezed out by the battery module 300, to prevent the adhesive from overflowing and contaminating the wiring harness or other electrical components, Or cause wiring harnesses or other electrical components to stick to each other.
  • the adhesive located in the groove 214 first receives the impact.
  • the adhesive in the groove 214 can be prevented from being brittle and the integrity of the bonding can be ensured.
  • the top surface of the first buffer 221 may be lower than the inner surface 211a of the bottom plate 211.
  • the top surface of the first buffer member 221 may also be flush with the inner surface 211a. This can better protect the adhesive.
  • the top surface of the first buffer 221 may be higher than the inner surface 211a and exposed on the inner surface 211a. In this way, while better protecting the adhesive, it also helps to form a limit to the battery module 300 and better ensure the insulation between the battery module 300 and the bottom plate 211.
  • the grooves 214 are strip-shaped grooves.
  • the plurality of strip-shaped grooves are spaced apart on the bottom plate 211 and all extend in the same direction.
  • the first buffer 221 includes a plurality of elastic strips. The grooves are adapted, and the plurality of elastic strips are respectively disposed in each groove 214.
  • the above-mentioned same direction may be along the longitudinal direction X of the bottom plate 211, or may be along the width direction Y of the bottom plate 211, and of course, may be in other directions intersecting both the longitudinal direction X and the width direction Y.
  • the grooves 214 are block-shaped grooves.
  • the plurality of block-shaped grooves are spaced apart on the bottom plate 211.
  • the first buffer 221 includes a plurality of elastic blocks.
  • the block is adapted to the block-shaped groove, and a plurality of elastic blocks are correspondingly disposed in each groove 214 respectively.
  • the block-shaped grooves may be square, rhombic, circular, elliptical, irregular, etc.
  • the plurality of block-shaped grooves are arranged on the bottom plate 211 in an array, a radial arrangement, or an irregular arrangement.
  • a plurality of grooves 214 are distributed in a grid on the bottom plate 211, wherein, there may be a plurality of grooves 214 extending along the longitudinal direction X of the bottom plate 211 and A plurality of grooves 214 extending in the width direction Y of the bottom plate 211 intersect to form a grid-like distribution, but it is not limited thereto.
  • a plurality of grooves 214 in a first direction that intersects the longitudinal direction X and the width direction Y and a plurality of grooves 214 in a second direction that intersects the longitudinal direction X and the width direction Y may be formed by crossing Grid-like distribution.
  • the first buffer member 221 is a mesh-shaped elastic body, and is correspondingly disposed in the grooves 214 distributed in a grid.
  • the buffer assembly 220 may further include a second buffer member 222 disposed on a side of the first buffer member 221 away from the bottom plate 211.
  • the buffer assembly 220 in the box 200 further includes a second buffer member 222, when the large surface of the bottom plate 211 is subjected to an impact such as an external impact, the second buffer member 222 can absorb the impact force received by the large surface of the bottom plate 211. This can further improve the fixing stability of the battery module 300 and maintain an appropriate safety distance between the battery module 300 and the bottom plate 211, so that the safety performance of the battery box 100 can be further improved.
  • the second buffer 222 absorbs the impact force on the large surface of the bottom plate 211, thereby protecting the adhesive and preventing the adhesive from being brittle. Fracture damage. Therefore, the stability of bonding and fixing the battery module 300 can be further improved, and the insulation between the battery module 300 and the box body 200 can be ensured, so that the battery box 100 has higher safety performance.
  • the second buffer 222 includes an elastic sheet 223.
  • the number of the elastic sheets 223 may be one or more than two. When the number of the elastic sheets 223 is two or more, they are distributed at intervals.
  • a plurality of through holes 225 are provided on the elastic sheet 223.
  • the through hole 225 allows the adhesive to pass through, thereby conveniently adhering and fixing the battery module 300.
  • the provision of the through hole 225 can also protect the adhesive.
  • the elastic piece 223 can buffer the force and prevent the adhesive force from brittlely breaking due to the force, thereby further improving the fixing stability of the battery module 300.
  • the adhesive is bonded through the through hole 225, which can relieve the adhesive from overflowing in other directions, thereby protecting the wiring harness and other electrical components in the box 200 from being contaminated or bonded by the adhesive. As a result, the safety and reliability of the battery box are further improved.
  • the elastic sheet 223 may be made of a material with elasticity, preferably an insulating material with elasticity, such as thermosetting foam plastic, thermoplastic foam plastic, or other elastomeric polymer.
  • the elastic sheet 223 can effectively absorb the impact force received by the large surface of the bottom plate 211, and can also ensure the insulation between the battery module 300 and the case 200.
  • the thickness of the elastic sheet 223 is preferably 0.2 mm to 5 mm. This thickness ensures that the elastic piece 223 exerts the above-mentioned effects, and also ensures that the box 200 has a light weight.
  • the number of the elastic sheet 223 is one, which is covered on the inner surface 211 a of the bottom plate 211.
  • the elastic piece 223 is provided with a plurality of through holes 225.
  • the area of the elastic sheet 223 accounts for more than 40% of the area of the bottom plate 211.
  • the elastic sheet 223 can better absorb the impact force on the large surface of the bottom plate 211, so that the battery box 100 has higher safety performance.
  • the number of the elastic pieces 223 is two or more, and are spaced on the inner surface 211 a of the bottom plate 211.
  • Each elastic piece 223 is provided with a plurality of through holes 225.
  • the total area of the two or more elastic pieces 223 accounts for more than 40% of the area of the bottom plate 211.
  • the two or more elastic sheets 223 can better absorb the impact force on the large surface of the bottom plate 211, so that the battery box 100 has higher safety performance.
  • the second buffer member 222 may further include a plurality of limit bars 224.
  • the second buffer member 222 includes an elastic piece 223 and a plurality of limiting bars 224.
  • the plurality of limiting bars 224 cover the inner surface 211 a of the bottom plate 211 and are distributed on the outer circumferential side of the elastic sheet 223 at intervals.
  • the limiting bar 224 can play a limiting role on the battery module 300, ensure that the battery module 300 and the bottom plate 211 have an appropriate safety distance, and make the battery box 100 have higher safety performance. At the same time, the layer thickness of the adhesive can be controlled by the limit bar 224, which is beneficial to increase the adhesive strength.
  • the limit bar 224 may use a rigid insulator.
  • the rigid limit bar 224 has rigidity, which can more effectively maintain an appropriate safety distance between the battery module 300 and the bottom plate 211 and an appropriate thickness of the adhesive layer.
  • the thickness of the limit bar 224 is preferably 0.2 mm to 5 mm.
  • the limit bar 224 with an appropriate thickness is more advantageous for an appropriate safety distance between the battery module 300 and the bottom plate 211.
  • the limit bar 224 may also have a certain elasticity, as long as it can ensure a safe distance between the battery module 300 and the bottom plate 211.
  • the limit bar 224 with a certain elasticity has the function of absorbing the impact force received by the bottom plate 211 while being limited.
  • one or more than two limit bars 224 are provided on the two long sides of the elastic sheet 223 at intervals. This can better ensure that the battery module 300 and the bottom plate 211 have an appropriate safety distance.
  • the number of the elastic sheets 223 is two or more, one or more than two elastic sheets 223 are spaced between the edges of the bottom plate 211 and two adjacent elastic sheets 223 Limit bar 224. This can better ensure that the battery module 300 and the bottom plate 211 have an appropriate safety distance.
  • a connection member 230 may be provided at the connection between the bottom plate 211 and the side plate 212.
  • the arrangement of the connection part 230 can further improve the overall rigidity and strength of the box 200, and can also improve the impact resistance of the box 200, so that the bottom plate 211 is not easily deformed under external impact, thereby helping to improve the stability of the battery module 300. And maintain an appropriate safety distance between the battery module 300 and the bottom plate 211, so the safety performance of the battery box 100 can be improved.
  • the connection member 230 is provided at the connection between the long side of the bottom plate 211 and the side plate 212.
  • the connecting member 230 includes a first strip-shaped plate and a second strip-shaped plate connected in an L shape, the first strip-shaped plate and the side plate 212 are welded or connected by fasteners, and the second strip-shaped plate and the bottom plate 211 Welding connection or connection through fasteners.
  • a fixing member 240 may be provided on the inner surface 211 a of the bottom plate 211 to fix the battery module 300.
  • the bottom plate 211 includes two opposite broad sides, and a fixing member 240 is respectively provided on the two broad sides.
  • the fixing member 240 extends in the width direction Y of the bottom plate 211, and its top surface is higher than the inner surface 211a of the bottom plate 211.
  • the battery pack composed of one or more battery modules 300 is disposed between the two fixing members 240, and the connection member is fixed to the fixing member 240 to implement the installation and fixing of the battery pack.
  • a threaded hole is provided on the fixing part 240, and the connecting part includes a bolt adapted to the threaded hole, and the battery pack is installed and fixed by cooperation of the bolt and the threaded hole.
  • a reinforcing member 250 may be provided on the outer surface 211b of the bottom plate 211.
  • the reinforcement member 250 can further improve the overall rigidity and strength of the case 200, and can also improve the impact resistance of the case 200, so that the bottom plate 211 is less likely to deform under external impact, thereby helping to improve the fixing stability of the battery module 300 , And to maintain an appropriate safety distance between the battery module 300 and the bottom plate 211. Therefore, it is advantageous to improve the safety performance of the battery box 100.
  • the reinforcing member 250 includes a plurality of reinforcing beams spaced apart from each other along the longitudinal direction X or the width direction Y of the bottom plate 211.
  • the reinforcing beam is welded or connected to the bottom plate 211 by fasteners.

Abstract

本申请公开了一种用于容纳电池模组的箱体及电池箱。箱体包括壳体和缓冲组件，壳体包括底板以及连接于底板的侧板，底板与侧板围合形成容纳空间，底板上设有开口朝向容纳空间的多个凹槽；缓冲组件至少包括第一缓冲件，第一缓冲件对应所述凹槽设置。本申请公开的用于容纳电池模组的箱体，当电池模组容纳于箱体中时，缓冲组件位于电池模组和底板之间，当底板受到外部撞击等冲击时，缓冲组件能够吸收底板所承受的冲击力，使电池箱具有较高的安全性能。

Description

用于容纳电池模组的箱体及电池箱
相关申请的交叉引用
本申请要求享有于2018年11月16日提交的名称为“用于容纳电池模组的箱体及电池箱”的中国专利申请201821893737.0的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请属于储能设备技术领域，具体涉及一种用于容纳电池模组的箱体及电池箱。
背景技术
二次电池被越来越广泛地应用于交通工具、加工生产机器及通讯设备等设备。为了获得高电压和/或高电流，二次电池通常是成组使用，即由单体电池形成电池模组，多个电池模组进一步组合并通过箱体封装起来。但是，当箱体的底板受到来自撞击等的冲击力时，会降低电池模组在箱体中的固定稳定性，甚至破坏电池模组与箱体底板之间的安全距离，带来安全隐患。
发明内容
本申请一方面提供一种用于容纳电池模组的箱体，箱体包括：
壳体，包括底板以及连接于底板的侧板，底板与侧板围合形成容纳空间，底板上设有开口朝向容纳空间的多个凹槽；
缓冲组件，至少包括第一缓冲件，第一缓冲件对应凹槽设置。
本申请在用于容纳电池模组的箱体的底板上设有缓冲组件，以使电池模组容纳于箱体中时，缓冲组件位于电池模组和底板之间。当底板受到外部撞击等冲击时，缓冲组件能够吸收底板所承受的冲击力，由此能保证电 池模组具有较高的固定稳定性、以及使电池模组与箱体底板之间保持适当的安全距离，从而能提高采用该箱体的电池箱的安全性能。
在本申请一个方面的实施例中，底板可包括相对的内表面和外表面，凹槽位于内表面，第一缓冲件填充于凹槽，第一缓冲件的顶面与内表面齐平或露出于内表面。
在本申请一个方面的实施例中，凹槽可为条形凹槽，多个凹槽在底板上间隔分布且均沿同一方向延伸，第一缓冲件包括多个弹性条，分别对应每个凹槽设置。
在本申请一个方面的实施例中，凹槽可为块状凹槽，在底板上间隔分布，第一缓冲件包括多个弹性块，分别对应每个凹槽设置。
在本申请一个方面的实施例中，多个凹槽可在底板上呈网格状分布，第一缓冲件为网状弹性体，对应设置于呈网格状分布的凹槽。
在本申请一个方面的实施例中，缓冲组件可进一步包括第二缓冲件，第二缓冲件设置于第一缓冲件远离底板的一侧。
在本申请一个方面的实施例中，第二缓冲件可包括一个或相互间隔分布的多个弹性片。
在本申请一个方面的实施例中，弹性片可设有多个通孔。
在本申请一个方面的实施例中，第二缓冲件还可包括多个限位条，多个限位条间隔分布于弹性片外周侧，用于限定电池模组与底板之间的距离。
本申请另一方面提供一种电池箱，电池箱包括：
一个以上的电池模组；
箱体，用于容纳一个以上的电池模组，其中，箱体为本申请一方面提供的箱体，其中缓冲组件位于底板与电池模组之间。
在本申请另一方面的实施例中，电池箱可进一步包括粘结剂，用于将一个以上的电池模组固定于底板。
当电池模组通过粘结剂将电池模组粘结固定于箱体的底板上时，粘结剂同时起到电池模组与箱体底板之间绝缘的作用。并且，位于电池模组和底板之间的缓冲组件还能够起到保护粘结剂的作用，防止粘结剂因承受冲 击力而导致的断裂或损害。该电池箱能保证电池模组具有较高的固定稳定性、以及确保电池模组与箱体底板之间能保持适当的安全距离和良好的绝缘性，从而提高电池箱的安全性能。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，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，还可以根据附图获得其他的附图。
图1为本申请实施例提供的一种电池箱的分解结构示意图。
图2为本申请实施例提供的一种壳体的结构示意图。
图3为图2沿A-A的剖视图。
图4为本申请实施例提供的一种箱体的分解结构示意图。
图5为本申请实施例提供的另一种壳体的结构示意图。
图6为本申请实施例提供的另一种箱体的分解结构示意图。
图7为本申请实施例提供的又一种壳体的结构示意图。
图8为本申请实施例提供的一种第二缓冲件的结构示意图。
图9为本申请实施例提供的另一种第二缓冲件的结构示意图。
图10为图2沿B-B的剖视图。
图11为图10的局部放大图。
附图标号说明：
100、电池箱；
200、箱体；
210、壳体；
211、底板；211a、内表面；211b、外表面；212、侧板；213、容纳空间；214、凹槽；
220、缓冲组件；
221、第一缓冲件；222、第二缓冲件；223、弹性片；224、限位条；225、通孔；
230、连接部件；
240、固定部件；
250、加强部件；
300、电池模组；
X、长度方向；Y、宽度方向。
具体实施方式
为了使本申请的发明目的、技术方案和有益技术效果更加清晰，以下结合实施例对本申请进行进一步详细说明。应当理解的是，本说明书中描述的实施例仅仅是为了解释本申请，并非为了限定本申请。
为了简便，本文仅明确地公开了一些数值范围。然而，任意下限可以与任何上限组合形成未明确记载的范围；以及任意下限可以与其它下限组合形成未明确记载的范围，同样任意上限可以与任意其它上限组合形成未明确记载的范围。此外，尽管未明确记载，但是范围端点间的每个点或单个数值都包含在该范围内。因而，每个点或单个数值可以作为自身的下限或上限与任意其它点或单个数值组合或与其它下限或上限组合形成未明确记载的范围。
在本文的描述中，需要说明的是，除非另有说明，“若干”的含义是一个或者一个以上；“多个”的含义是两个以上；“以上”、“以下”为包括本数；术语“上”、“下”、“内”、“外”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文的限制。
在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
本申请的上述发明内容并不意欲描述本申请中的每个公开的实施方式 或每种实现方式。如下描述更具体地举例说明示例性实施方式。在整篇申请中的多处，通过一系列实施例提供了指导，这些实施例可以以各种组合形式使用。在各个实例中，列举仅作为代表性组，不应解释为穷举。
为了更好地理解本申请，下面结合图1至图11对本申请实施例所提供的用于容纳电池模组的箱体及电池箱进行详细介绍。
图1示意性地显示了本申请一个实施例提供的电池箱的分解结构。请参照图1，本申请一个实施例提供的电池箱100包括电池模组300和用于容纳电池模组300的箱体200。
本申请实施例提供的一种用于容纳电池模组300的箱体200包括壳体210和缓冲组件220。其中，壳体210包括底板211以及连接于底板211的侧板212，底板211与侧板212围合形成容纳空间213，底板211上设有开口朝向容纳空间213的多个凹槽214。缓冲组件220至少包括第一缓冲件221，第一缓冲件221对应凹槽114设置。
壳体210可以采用金属材质。金属材质的壳体210具有较高的强度，以保护电池模组300。金属材质的壳体210还具有屏蔽功能，能够保证电池箱100的电力传输不被外界干扰，并同时保证外界环境的安全。当然，壳体210还可以采用塑料材质。塑料材质的壳体210具有较高的力学性能的同时，还具有较低的重量，因此有利于提高电池箱100的能量密度。当需要塑料材质的箱体200具有较高的屏蔽效果时，可以在壳体210中设有屏蔽层。
第一缓冲件221采用具有弹性的材料，例如热固性泡沫塑料、热塑性泡沫塑料、或其他弹性体聚合物。
电池模组300容纳于箱体200的容纳空间213内，并通过固定件进行固定。电池模组300的数量为一个或多个，当电池模组300的数量为多个时，多个电池模组300之间可以是串联连接、或并联连接、或串并联混合连接。电池模组300中包括多个单体电池，该多个单体电池之间可以是串联连接、或并联连接、或串并联混合连接。在本实施例中，单体电池例如是方形电池，当然也可以是圆柱形等形状，在此不做限制。
由于本申请提供的箱体200在其底板211上设有缓冲组件220，当电池模组300容纳于箱体200中时，缓冲组件220位于电池模组300和底板211之间。当底板211受到外部撞击等冲击时，缓冲组件220能够吸收底板211所承受的冲击力，由此能保证电池模组300具有较高的固定稳定性，以及使电池模组300与底板211之间保持适当的安全距离，从而能提高电池箱100的安全性能。
凹槽214的设置还能在不降低电池箱100的能量密度(甚至是提高电池箱100的能量密度)的前提下，增强底板211的整体强度。底板211不易因自身内部应力而发生翘曲变形，从而保证底板211朝向容纳空间213的表面的平面度。当电池模组300安装于箱体200内时，其中所含多个单体电池的顶部高度保持齐平，有利于在后续工序中稳定焊接汇流排，并保证使用过程中汇流排与各单体电池的连接稳定性。
用于固定电池模组300的固定件可以有多种。在一些实施例中，可以采用粘结剂(图中未示出)将电池模组300粘结固定于箱体200的底板211上。这样还可以减少箱体200中金属件的使用，从而有利于提高电池箱100的能量密度。
在一些实施例中，底板211包括相对的内表面211a和外表面211b，其中内表面211a朝向容纳空间213设置，外表面211b背向容纳空间213设置。在底板211的内表面211a涂覆粘结剂，从而将电池模组300粘结固定于底板211上。上述粘结剂可以是结构胶，例如环氧结构胶、聚氨酯结构胶、丙烯酸结构胶、有机硅结构胶、改性硅胶等。
由于粘结剂为绝缘材料，因此能够实现电池模组300与箱体200之间的绝缘。这样还可以省去绝缘板，简化箱体200的结构。
另外，由于在箱体200的底板211上设有缓冲组件220，当底板211受到来自撞击等的冲击时，缓冲组件220吸收了底板211所承受的冲击力，能够保护粘结剂，防止粘结剂因脆性而发生断裂破坏。这样能提高电池模组300粘结固定的稳定性，并使电池模组300与箱体200之间能保持良好的绝缘性，从而保证电池箱100具有较高的安全性能。
在一些实施例中，请一并参照图2和图3，凹槽214位于内表面 211a，第一缓冲件221填充于凹槽214中。
当采用粘结剂将电池模组300固定于底板211上时，凹槽214还能够容纳被电池模组300挤压出的多余粘结剂，避免粘结剂溢出而污染线束或其他电气元件，或导致线束或其他电气元件相互粘接。
另外，由于凹槽214的内底面低于底板211的内表面211a，当箱体200的底板211受到来自撞击等冲击时，位于凹槽214中的粘结剂首先承受了撞击。但是，因为凹槽214中的第一缓冲件221吸收了冲击力，从而能够防止凹槽214中的粘结剂发生脆裂，保证粘结的一体性。
第一缓冲件221的顶面可以低于底板211的内表面211a。当然第一缓冲件221的顶面也可以与内表面211a齐平。这样能能够更好地保护粘结剂。第一缓冲件221的顶面还可以高于内表面211a而露出于内表面211a。这样在更好地保护粘结剂的同时，还有利于形成对电池模组300的限位，更好地保证电池模组300与底板211之间的绝缘性。
在一些实施例中，凹槽214为条形凹槽，多个条形凹槽在底板211上间隔分布且均沿同一方向延伸，第一缓冲件221包括多个弹性条，弹性条与条形凹槽相适配，该多个弹性条分别对应设置于每个凹槽214中。
上述同一方向可以是沿底板211的长度方向X，也可以是沿底板211的宽度方向Y，当然也可以是沿与长度方向X和宽度方向Y均相交的其他方向。
在一些实施例中，请一并参照图4和图5，凹槽214为块状凹槽，多个块状凹槽在底板211上间隔分布，第一缓冲件221包括多个弹性块，弹性块与块状凹槽相适配，多个弹性块分别对应设置于每个凹槽214中。
上述块状凹槽可以是方形、菱形、圆形、椭圆形、不规则形等形状。多个块状凹槽在底板211上呈阵列排布、或放射状排布、或不规则排布等排布方式。
在一些实施例中，请一并参照图6和图7，多个凹槽214在底板211上呈网格状分布，其中，可以是多个沿底板211的长度方向X延伸的凹槽214与多个沿底板211的宽度方向Y延伸的凹槽214相交叉形成网格状分布，但并不限于此。例如还可以是多个沿与长度方向X和宽度方向Y均相 交的第一方向的凹槽214和多个沿与长度方向X和宽度方向Y均相交的第二方向的凹槽214相交叉形成网格状分布。
第一缓冲件221为网状弹性体，对应设置于呈网格状分布的凹槽214中。
在一些实施例中，缓冲组件220还可以包括第二缓冲件222，第二缓冲件222设置于第一缓冲件221远离底板211的一侧。
由于箱体200中的缓冲组件220还包括第二缓冲件222，当底板211的大面承受外部撞击等冲击时，第二缓冲件222能够吸收底板211大面所承受的冲击力。这样能进一步提高电池模组300的固定稳定性，以及使电池模组300与底板211之间保持适当的安全距离，因此能进一步提高电池箱100的安全性能。
当采用粘结剂将电池模组300固定于底板211上时，由于第二缓冲件222吸收了底板211大面所承受的冲击力，从而能够保护粘结剂，防止粘结剂因脆性而发生断裂破坏。因此能够进一步提高电池模组300粘结固定的稳定性，并保证电池模组300与箱体200之间的绝缘性，从而使电池箱100具有较高的安全性能。
在一些实施例中，第二缓冲件222包括弹性片223。弹性片223的个数可以为一个或两个以上，弹性片223的个数为两个以上时相互间隔分布。
在一些实施例中，在弹性片223上设有多个通孔225。通孔225使粘结剂能够通过，从而方便地实现电池模组300的粘结固定。尤其是，通孔225的设置还能保护粘结剂。当底板211受到冲击等作用力时，弹性片223能缓冲该作用力，防止粘结力因受力发生脆性破裂，从而进一步提高电池模组300的固定稳定性。另外，粘结剂通过通孔225进行粘接，能够缓解粘结剂向其他方向溢出，从而保护箱体200中的线束和其他电气元件不被粘结剂污染或粘接。由此电池箱的安全性和可靠性得到进一步提高。
弹性片223可以采用具有弹性的材料，优选具有弹性的绝缘材料，例如热固性泡沫塑料、热塑性泡沫塑料、或其他弹性体聚合物。该弹性片223既能有效地吸收底板211大面所承受的冲击力，又能够保证电池模组 300与箱体200之间的绝缘性。
在一些实施例中，弹性片223的厚度优选为0.2mm～5mm。该厚度在保证弹性片223上述效果发挥的同时，还能够保证箱体200具有较轻的重量。
作为一个示例，请参照图6和图8，弹性片223的个数为一个，覆设于底板211的内表面211a上。该弹性片223上设有多个通孔225。优选地，弹性片223的面积占底板211面积的40％以上。该弹性片223能更好地吸收底板211大面所承受的冲击力，使电池箱100具有较高的安全性能。
作为另一个示例，请参照图9，弹性片223的个数为两个以上，彼此间隔覆设于底板211的内表面211a上。每个弹性片223上设有多个通孔225。优选地，该两个以上弹性片223的总面积占底板211面积的40％以上。该两个以上的弹性片223能更好地吸收底板211大面所承受的冲击力，使电池箱100具有较高的安全性能。
在一些实施例中，为了更好地发挥弹性片223的效果以及保证电池模组300与底板211之间具有适当的安全距离，第二缓冲件222还可以包括多个限位条224。在这些实施例中，第二缓冲件222包括弹性片223和多个限位条224，多个限位条224覆设于底板211的内表面211a、并间隔分布于弹性片223的外周侧。
限位条224可以起到对电池模组300的限位作用，保证电池模组300与底板211之间具有适当的安全距离，使电池箱100具有较高的安全性能。同时，通过限位条224可以控制粘结剂的层厚，有利于增加粘结强度。
在一些实施例中，限位条224可以采用硬质绝缘体。硬质限位条224具有刚性，其能够更有效地使电池模组300与底板211之间保持适当的安全距离，以及使粘结剂层具有适当的厚度。
在一些实施例中，限位条224的厚度优选为0.2mm～5mm。具有适当厚度的限位条224更有利于使电池模组300与底板211之间具有适当的安全距离。
可以理解的是，限位条224也可以具有一定的弹性，只要能够保证电池模组300与底板211之间的安全距离。具有一定弹性的限位条224在限位的同时，还具有吸收底板211所承受的冲击力的功能。
例如弹性片223的个数为一个时，在弹性片223的两个长边侧分别间隔设置有一个或两个以上的限位条224。这样能更好地保证电池模组300与底板211之间具有适当的安全距离。
再例如弹性片223的个数为两个以上时，在两个以上弹性片223与底板211的边沿之间、以及在相邻两个弹性片223之间分别间隔设置有一个或两个以上的限位条224。这样能更好地保证电池模组300与底板211之间具有适当的安全距离。
在一些实施例中，可以在底板211与侧板212的连接处设置有连接部件230。连接部230的设置能够进一步提高箱体200的整体刚度和强度，还能提高箱体200的抗冲击能力，使得底板211在外力冲击下不易发生变形，从而有利于提高电池模组300的固定稳定性，以及使电池模组300与底板211之间保持适当的安全距离，因此能提高电池箱100的安全性能。可选地，在底板211的长边与侧板212的连接处设置有上述连接部件230。可选地，连接部件230包括呈L形连接的第一条形板和第二条形板，第一条形板与侧板212焊接连接或通过紧固件连接，第二条形板与底板211焊接连接或通过紧固件连接。
在一些实施例中，请一并参照图10和图11，可以在底板211的内表面211a设有固定部件240，以固定电池模组300。可选地，底板211包括相对的两个宽边，在该两个宽边上分别设置有一个固定部件240。固定部件240沿底板211的宽度方向Y延伸，且其顶面高于底板211的内表面211a。一个或多个电池模组300组成的电池组设置于两个固定部件240之间，并通过连接部件固定于固定部件240而实现电池组的安装固定。可选地，在固定部件240上设有螺纹孔，连接部件包括与螺纹孔相适配的螺栓，通过螺栓与螺纹孔的配合实现电池组的安装固定。
进一步地，还可以在底板211的外表面211b设有加强部件250。通过加强部件250能够进一步提高箱体200的整体刚度和强度，还能提高箱体 200的抗冲击能力，使得底板211在外力冲击下不易发生变形，从而有利于提高电池模组300的固定稳定性，以及使电池模组300与底板211之间保持适当的安全距离。因此有利于提高电池箱100的安全性能。作为一个示例，加强部件250包括多个沿底板211的长度方向X或宽度方向Y彼此间隔设置的加强梁。可选地，加强梁焊接连接或通过紧固件连接于底板211上。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (11)

  1. 一种用于容纳电池模组的箱体，包括：
    壳体，包括底板以及连接于所述底板的侧板，所述底板与所述侧板围合形成容纳空间，所述底板上设有开口朝向所述容纳空间的多个凹槽；
    缓冲组件，至少包括第一缓冲件，所述第一缓冲件对应所述凹槽设置。
  2. 根据权利要求1所述的箱体，其中，所述底板包括相对的内表面和外表面，所述凹槽位于所述内表面，所述第一缓冲件填充于所述凹槽，所述第一缓冲件的顶面与所述内表面齐平或露出于所述内表面。
  3. 根据权利要求1所述的箱体，其中，所述凹槽为条形凹槽，多个所述凹槽在所述底板上间隔分布且均沿同一方向延伸，所述第一缓冲件包括多个弹性条，分别对应每个所述凹槽设置。
  4. 根据权利要求1所述的箱体，其中，所述凹槽为块状凹槽，在所述底板上间隔分布，所述第一缓冲件包括多个弹性块，分别对应每个所述凹槽设置。
  5. 根据权利要求1所述的箱体，其中，多个所述凹槽在所述底板上呈网格状分布，所述第一缓冲件为网状弹性体，对应设置于呈网格状分布的所述凹槽。
  6. 根据权利要求1至5任一项所述的箱体，其中，所述缓冲组件进一步包括第二缓冲件，所述第二缓冲件设置于所述第一缓冲件远离所述底板的一侧。
  7. 根据权利要求6所述的箱体，其中，所述第二缓冲件包括一个或相互间隔分布的多个弹性片。
  8. 根据权利要求7所述的箱体，其中，所述弹性片设有多个通孔。
  9. 根据权利要求7或8所述的箱体，其中，所述第二缓冲件还包括多个限位条，多个所述限位条间隔分布于所述弹性片外周侧，用于限定所述电池模组与所述底板之间的距离。
  10. 一种电池箱，包括：
    一个以上的电池模组；
    箱体，用于容纳所述一个以上的电池模组，所述箱体为权利要求1至9任意一项所述的箱体，其中所述缓冲组件位于所述底板与所述电池模组之间。
  11. 根据权利要求10所述的电池箱，其中，进一步包括粘结剂，用于将所述一个以上的电池模组固定于所述底板。
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