WO2020133807A1 - 一种电池箱 - Google Patents

一种电池箱 Download PDF

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Publication number
WO2020133807A1
WO2020133807A1 PCT/CN2019/082662 CN2019082662W WO2020133807A1 WO 2020133807 A1 WO2020133807 A1 WO 2020133807A1 CN 2019082662 W CN2019082662 W CN 2019082662W WO 2020133807 A1 WO2020133807 A1 WO 2020133807A1
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WO
WIPO (PCT)
Prior art keywords
battery
reinforcing beam
reinforcing
lower box
box
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Application number
PCT/CN2019/082662
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English (en)
French (fr)
Inventor
黄海华
石卫刚
Original Assignee
宁德时代新能源科技股份有限公司
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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
Priority to US17/418,779 priority Critical patent/US20220059897A1/en
Priority to EP22215184.7A priority patent/EP4191767A1/en
Priority to EP19901900.1A priority patent/EP3886198B1/en
Publication of WO2020133807A1 publication Critical patent/WO2020133807A1/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
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to the technical field of energy storage devices, in particular to a battery box.
  • each module is installed in the battery box.
  • the module usually includes two module end plates.
  • the function of the module end plate is to resist the expansion force of the battery core.
  • the battery box The lower box is mainly stamped from sheet metal or welded from aluminum profiles.
  • the battery box itself is heavier, and the weight of each module installed in the battery box makes the overall battery box heavier.
  • lightweight materials such as carbon fiber are often used to make the lower box body. These lightweight box bodies have higher costs and lower production efficiency.
  • a battery box including:
  • a battery cell the battery cell includes a top cover and a case, the top cover is sealingly connected above the case, the case includes a first surface oppositely arranged and a second surface oppositely arranged, the first The area of the surface is larger than the area of the second surface;
  • the lower box includes a bottom plate provided on the bottom surface and side plates on the side, and the upper portion has an opening, and a pair of side plates opposite to the lower box are provided with reinforcing beams;
  • At least one first surface of the battery cell is in contact with the side plate or the reinforcing beam of the lower case.
  • the reinforcing beam includes a first reinforcing beam, the first reinforcing beam is disposed inside the lower case, and at least one first surface of the battery cell is in contact with the first reinforcing beam.
  • the height of the first reinforcing beam is lower than the height of the side plate of the lower box, and the first reinforcing beam and the side plate of the lower box are stepped.
  • first reinforcing beam is integrally formed with the side plate of the lower box.
  • the reinforcing beam includes a second reinforcing beam, the second reinforcing beam is disposed outside the lower case, and at least one first surface of the battery cell is in contact with a side plate of the lower case.
  • the second reinforcing beam is integrally formed with the side plate of the lower box.
  • the reinforcing beam includes a second reinforcing beam, and the second reinforcing beam is disposed outside the lower box.
  • the height of the first reinforcing beam is lower than the height of the side plate of the lower box, the first reinforcing beam and the side plate of the lower box are stepped, and the second reinforcing beam faces One side of the lower box is a structure adapted to the stepped structure.
  • an adhesive layer is provided on the upper surface of the stepped structure of the second box toward the lower box.
  • the upper surface of the second reinforcing beam facing the stepped structure of the lower box is provided with a rubber overflow groove.
  • first reinforcing beam is integrally formed with the side plate of the lower box.
  • the second reinforcing beam is integrally formed with the side plate of the lower box.
  • transverse beam the installation direction of the transverse beam is perpendicular to the reinforcing beam, and both ends of the transverse beam are connected and fixed with the side plate or the reinforcing beam of the lower box, and the transverse beam separates the internal space of the lower box Into more than two battery placement areas.
  • both ends of the cross beam are connected to the side plate or the reinforcement beam of the lower box through a connecting piece.
  • the installation direction of the longitudinal beam is perpendicular to the transverse beam, and a slot structure is formed on the longitudinal beam or the transverse beam, and the longitudinal beam and the transverse beam are connected by a clamping groove structure ,
  • the lateral beam and the longitudinal beam jointly divide the internal space of the lower box into two or more battery placement areas.
  • the reinforcing beam further includes a third reinforcing beam
  • the third reinforcing beam is disposed inside the lower box and is located on the upper side of the horizontal beam, and the installation direction of the third reinforcing beam and the The beams are perpendicular to each other, and the two ends of the beam are provided with bosses, and the third reinforcing beam is provided with grooves at positions corresponding to the bosses of the beam, and the bosses at both ends of the beam are locked to the first Three reinforce the beam in the groove.
  • the above technical solution has the following advantages: the reinforcing beams provided on the pair of side plates opposite to the lower box can effectively enhance the strength of the side plates of the lower box, and directly place the battery cells in a row in the lower box In the body, the heavy module end plate structure is eliminated, which reduces the overall production cost of the battery box and effectively reduces the weight of the battery box.
  • FIG. 1 is a schematic structural view of a first reinforcement beam, a second reinforcement beam, a transverse beam, and a longitudinal beam provided in a lower case of a battery box according to an embodiment of the present application;
  • Figure 2 is a schematic diagram of the explosion structure of Figure 1;
  • FIG. 3 is a schematic structural view of a battery cell provided in a battery box of this embodiment
  • FIG. 4 is a cross-sectional view of FIG. 3 along the direction of the beam
  • FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;
  • FIG. 6 is a schematic diagram of the structure of a battery cell
  • FIG. 7 is a schematic view of the cross-sectional structure of the second reinforcing beam.
  • connection refers to two or more; the terms “connection”, “fixation”, etc. should be understood in a broad sense, for example, “connection” may be a fixed connection, a detachable connection, or a whole Ground connection, or electrical connection; either directly connected or indirectly connected through an intermediary.
  • connection may be a fixed connection, a detachable connection, or a whole Ground connection, or electrical connection; either directly connected or indirectly connected through an intermediary.
  • this embodiment provides a battery box, including: a battery cell 1 and a lower box body, and the battery cell 1 is arranged and placed in the lower box body.
  • the battery cell 1 includes a top cover 11 and a case.
  • the top cover 11 is hermetically connected above the case.
  • the top cover 11 and the case are tightly connected by a connecting member.
  • the case includes a first The surface 12 and the opposite second surface 13 have a larger area than the second surface 13.
  • the lower case includes a bottom plate 21 provided on the bottom surface and a side plate 22 on the side, and the upper portion has an opening.
  • a pair of side plates 22 opposite to the lower box body is provided with a reinforcing beam, and at least one first surface 12 of the battery cell 1 is in contact with the side plate 22 or the reinforcing beam of the lower box body.
  • the function of the reinforcing beam is to strengthen the pair of side plates 22 opposite to the lower box.
  • the reinforcing beam is attached to the pair of side plates 22 opposite to the lower box, the length of the reinforcing beam is the same as the pair of side plates 22 opposite to the lower box to which it is attached, and one side of the reinforcing beam is directly attached to the side of the lower box
  • the board 22 is connected to it.
  • the battery cells 1 are arranged in a row in the lower case, the first surfaces 12 of the battery cells 1 are attached to form a row, and the two battery cells 1 near the outside have at least one first surface 12 and the lower case
  • the side plates 22 or the reinforcing beams of the lower case are in contact with each other, and the side plates 22 or the reinforcing beams of the lower case abut against the first surface 12 of the battery cell 1, thereby preventing the first surface of the battery cell 1 when thermal runaway occurs in the battery 12 Arched outward by the expansion force in the battery.
  • the number of battery cells 1 in the lower box may be more than two, and the two battery cells 1 outside each battery cell 1 will have at least one first surface 12 and side plate 22 of the lower box or reinforced The beams are in contact.
  • the cross-sectional shape of the reinforcing beam is rectangular. In other embodiments, the cross-sectional shape of the reinforcing beam may be triangular, circular, or other geometric shapes.
  • the reinforcing beam includes a first reinforcing beam 31, the first reinforcing beam 31 is disposed inside the lower case, at least one first surface 12 of the battery cell 1 and the first The reinforcement beams 31 are in contact.
  • the first reinforcing beam 31 can be directly placed on the bottom of the lower box, and one of the adjacent end faces of the first reinforcing beam 31 forming a right angle is attached to the bottom of the lower box The other end face is in contact with the side plate 22 of the lower case.
  • the height of the first reinforcement beam 31 is lower than the height of the side plate 22 of the lower box, and the first reinforcement beam 31 is stepped between the side plate 22 of the lower box.
  • the first reinforcing beam 31 is placed at the bottom of the lower box, one of the adjacent end faces of the first reinforcing beam 31 forming a right angle is attached to the bottom of the lower box, and the other end is connected to the bottom
  • the side plates 22 of the box body fit together, the two end surfaces of the first reinforcing beam 31 facing outward and the lower box side plate 22 exposed above the first reinforcing beam 31 form a stepped structure 34, which is opposite to the battery cell 1
  • the stepped structure 34 can effectively resist the inside of the battery cell 1 The expansion force, and can achieve the weight reduction of the battery box.
  • the first reinforcing beam 31 is integrally formed with the side plate 22 of the lower box.
  • the lower case of the battery case is often directly cast, and the first reinforcing beam 31 provided in the lower case is directly cast together with the lower case.
  • the outer side of the side plate 22 of the lower box may be straight, and the first reinforcing beam is integrated with the inside of the lower box 31 forms a stepped structure; the cross-sectional structure of the side plate 22 of the lower box may also be directly stepped, that is, the lower end of the side plate 22 of the lower box is hollowed out.
  • the reinforcing beam includes a second reinforcing beam 32, the second reinforcing beam 32 is disposed outside the lower case, at least one first surface 12 of the battery cell 1 and the lower case
  • the side plates 22 of the body are in contact.
  • One end surface of the second reinforcing beam 32 is attached to the outside of the side plate 22 of the lower box, and the extending direction of the second reinforcing beam 32 is the same as the extending direction of the side plate 22 of the lower box.
  • the second reinforcement beam 32 is integrally formed with the side plate 22 of the lower box.
  • the lower box body of the battery box is often directly cast, and the first reinforcing beam 31 provided outside the lower box body is directly cast together with the lower box body.
  • the reinforcing beam includes a first reinforcing beam 31 and a second reinforcing beam 32, the first reinforcing beam 31 is disposed inside the lower case, and the battery cell 1 has at least one first surface 12 is in contact with the first reinforcing beam 31, and the second reinforcing beam 32 is disposed outside the lower box.
  • the first reinforcing beam 31 can be directly placed on the bottom of the lower box, and one of the adjacent end faces of the first reinforcing beam 31 forming a right angle is attached to the bottom of the lower box The other end face is in contact with the side plate 22 of the lower case.
  • first reinforcing beam 31 is also possible to directly suspend the first reinforcing beam 31 on a pair of side plates 22 opposite to the lower box. Only one end face of the first reinforcing beam 31 fits the side plate 22 of the lower box. The lower end surface of the beam 31 is spaced from the bottom plate 21 of the lower case. One end surface of the second reinforcing beam 32 is attached to the outside of the side plate 22 of the lower box, and the extending direction of the second reinforcing beam 32 is the same as the extending direction of the side plate 22 of the lower box.
  • the first reinforcing beam 31 is integrally formed with the side plate 22 of the lower box; the second reinforcing beam 32 is integrally formed with the side plate 22 of the lower box.
  • the height of the first reinforcing beam 31 is lower than the height of the side plate 22 of the lower box.
  • the first reinforcing beam 31 and the side plate 22 of the lower box are stepped.
  • the side of the second reinforcing beam 32 facing the lower box is a structure adapted to the stepped structure 34.
  • the first reinforcing beam 31 is placed at the bottom of the lower box, one of the adjacent end faces of the first reinforcing beam 31 forming a right angle is attached to the bottom of the lower box, and the other end is connected to the bottom
  • the side plates 22 of the box body fit together, the two end surfaces of the first reinforcing beam 31 facing outward and the lower box side plate 22 exposed above the first reinforcing beam 31 form a stepped structure 34, which is opposite to the battery cell 1
  • the stepped structure 34 can effectively resist the inside of the battery cell 1 Expansion force.
  • the cross-sectional structure of the side plate 22 of the lower box body is directly stepped, that is, the lower end of the side plate 22 of the lower box body is hollowed out, and the second reinforcing beam 32 fits the stepped structure 34 of the lower box body, ensuring both The straightness of the outer side plate 22 of the lower case body is effectively enhanced, and the strength of the lower side plate 22 of the lower case body is effectively strengthened to effectively resist the expansion force of the battery cell 1 after thermal runaway, and the weight of the battery box can be reduced.
  • the second reinforcement beam 32 is provided with an adhesive layer on the upper surface of the lower box stepped structure 34; the upper surface of the adhesive layer is attached to the lower box stepped structure 34 In the lower surface, the lower surface of the adhesive layer is attached to the upper surface of the second reinforcing beam 32 facing the stepped structure 34 of the lower box.
  • the adhesive layer effectively adheres the second reinforcing beam 32 to the outside of the lower box. In order to prevent the glue layer from being applied during the coating process, the glue flows on the upper surface of the second reinforcing beam 32 toward the upper surface of the lower box-shaped structure 34.
  • the rubber overflow groove 321 is a groove structure opened along the length direction of the second reinforcing beam 32.
  • the number of the rubber overflow groove 321 may be more than two.
  • each of the rubber overflow grooves 321 Set in parallel.
  • the battery box further includes a crossbeam 41, and the installation direction of the crossbeam 41 is perpendicular to the reinforcement beam, and both ends of the crossbeam 41 are connected and fixed to the side plate 22 or the reinforcement beam of the lower case.
  • the beam 41 divides the internal space of the lower box into two or more battery placement areas. Each row of battery cells 1 is separated by a beam 41, and the beam 41 connected to the side plate 22 of the lower box or the reinforcing beam also has the effect of strengthening the strength of the lower box, which is more conducive to resisting the occurrence of the battery cells 1 The expansion force of the first surface 12 after thermal runaway.
  • both ends of the beam 41 are connected to the side plate 22 of the lower box or the reinforcing beam through a connector.
  • the two ends of the beam 41 can also be connected to the side plate 22 of the lower box or the reinforcing beam through an adhesive or a clamping structure. The beneficial effect is that the connection strength between the cross member 41 and the side plate 22 of the lower box or the reinforcing beam can be strengthened.
  • a longitudinal beam 42 is further included.
  • the installation direction of the longitudinal beam 42 is perpendicular to the transverse beam 41.
  • a slot structure is formed on the longitudinal beam 42 or the transverse beam 41.
  • the longitudinal beam 42 is The beams 41 are connected by a slot structure, and the beam 41 and the beam 42 jointly divide the internal space of the lower box into two or more battery placement areas. Under the effect of the longitudinal beam 42, the battery placement area divided by two adjacent lateral beams 41 can be further divided into two or more, so it can be divided into more battery placement areas.
  • the number of longitudinal beams 42 may be one less than the number of transverse beams 41. After each transverse beam 41 is arranged in parallel, the longitudinal beam 42 spans between adjacent transverse beams 41 and is connected to the transverse beam 41 by a connecting structure.
  • the reinforcing beam further includes a third reinforcing beam 33, the third reinforcing beam 33 is disposed inside the lower box and is located on the upper side of the beam 41, the third reinforcing beam 33
  • the installation direction is perpendicular to the beam 41, and the boss 41 1 is provided at both ends of the beam 41, and the third reinforcing beam 33 is provided with a groove 331 at a position corresponding to the boss 411 of the beam 41.
  • the bosses 411 at both ends of the beam 41 are locked in the grooves 331 of the third reinforcing beam 33.
  • the third reinforcing beam 33, the transverse beam 41, and the first reinforcing beam 31 or the second reinforcing beam 32 are connected by a connecting member, and the connecting member is connected to a position corresponding to the boss 411 and the groove 331.
  • the function of the third reinforcing beam 33 is to increase the contact area between the reinforcing beam and the battery cell 1 so that its resistance to the expansion of the battery cell 1 is better;
  • the third reinforcing beam 33 directly acts on the first surface 12 of the battery cell 1 to make it more resistant to the expansion of the battery cell 1.
  • the first reinforcement beam 31 is provided with a groove 331, and the bosses 411 at both ends of the cross beam 41 are locked in the groove 331 of the first reinforcement beam 31, so that the cross beam 41 and the first reinforcement beam 31
  • the connection structure is stronger, making it better against battery cell 1 expansion.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本发明涉及了一种电池箱，包括：电池单体(1)，所述电池单体 (1)包括顶盖 (11)与壳体，所述顶盖 (11)密封连接于壳体上方，所述壳体包括相对设置的第一表面 (12)以及相对设置的第二表面 (13)，所述第一表面 (12)的面积较第二表面 (13)的面积大；下箱体，包括设置于底面的底板 (21)以及侧面的侧板 (22)，且上部具有开口，且所述下箱体相对的一对侧板 (22)，上设置有加强梁；所述电池单体 (1)至少一个第一表面 (12)与所述下箱体的侧板 (22)或者加强梁相接触。设置于下箱体相对的一对侧板 (22)上的加强梁能够有效增强下箱体的侧板 (22)强度，直接将电池单体(1)成列放置于下箱体内，免去了繁重的模组端板结构，即降低了电池箱的整体生产成本，也有效地使电池箱轻量化。

Description

一种电池箱
交叉引用
本申请引用于2018年12月27日递交的名称为“一种电池箱”的第201811613811.3号中国专利申请，其通过引用被全部并入本申请。
技术领域
本发明涉及储能器件技术领域，尤其涉及一种电池箱。
背景技术
电池经串并联方式组合形成模组后，将各模组安装于电池箱内，模组通常包含两块模组端板，模组端板的作用是用于抵抗电芯的膨胀力，电池箱下箱体主要是由钣金冲压而成或者由铝型材拼焊而成，电池箱其本身重量较重，加上安装于电池箱内的各模组重量，使得电池箱整体偏重。为了减轻电池箱整体重量，往往采用碳纤维等轻量化的材料来制成下箱体，单这些轻量化箱体的成本较高，且生产效率较低。
发明内容
为此，需要提供一种电池箱，来解决原有电池箱结构繁重的问题。
为实现上述目的，发明人提供了一种电池箱，包括：
电池单体，所述电池单体包括顶盖与壳体，所述顶盖密封连接于壳体上方，所述壳体包括相对设置的第一表面以及相对设置的第二表面，所述第一表面的面积较第二表面的面积大；
下箱体，包括设置于底面的底板以及侧面的侧板，且上部具有开口，且所述下箱体相对的一对侧板上设置有加强梁；
所述电池单体至少一个第一表面与所述下箱体的侧板或者加强梁相接触。
进一步地，所述加强梁包括第一加强梁，所述第一加强梁设置于下箱体的内部，所述电池单体至少一个第一表面与所述第一加强梁相接触。
进一步地，所述第一加强梁的高度低于下箱体的侧板的高度，所述第一加强梁与所述下箱体的侧板之间呈台阶状。
进一步地，所述第一加强梁与所述下箱体的侧板一体成型。
进一步地，所述加强梁包括第二加强梁，所述第二加强梁设置于下箱体的外部，所述电池单体至少一个第一表面与所述下箱体的侧板相接触。
进一步地，所述第二加强梁与所述下箱体的侧板一体成型。
进一步地，所述加强梁包括第二加强梁，所述第二加强梁设置于下箱体的外部。
进一步地，所述第一加强梁的高度低于下箱体的侧板的高度，所述第一加强梁与所述下箱体的侧板之间呈台阶状，所述第二加强梁朝向下箱体的一侧为与所述台阶状结构相适配的结构。
进一步地，所述第二加强梁朝向下箱体台阶状结构的上表面设有胶层。
进一步地，所述第二加强梁朝向下箱体台阶状结构的上表面设有溢胶槽。
进一步地，所述第一加强梁与所述下箱体的侧板一体成型。
进一步地，所述第二加强梁与所述下箱体的侧板一体成型。
进一步地，还包括横梁，所述横梁的设置方向与加强梁相垂直，所述横梁的两端与下箱体的侧板或者加强梁相连接固定，所述横梁将下箱体的内部空间分隔成两个以上的电池放置区。
进一步地，所述横梁的两端通过连接件与所述下箱体的侧板或者加强梁相连接。
进一步地，包括纵梁，所述纵梁的设置方向与横梁相垂直，所述纵梁 或所述横梁上开设有卡槽结构，所述纵梁与所述横梁之间通过卡槽结构相连接，所述横梁和所述纵梁共同将所述下箱体的内部空间分隔成两个以上的电池放置区。
进一步地，所述加强梁还包括第三加强梁，所述第三加强梁设置于所述下箱体的内部且位于所述横梁上侧，所述第三加强梁的的设置方向与所述横梁相垂直，所述横梁的两端设有凸台，所述第三加强梁在与所述横梁的凸台的对应位置开设有凹槽，所述横梁两端的凸台卡设于所述第三加强梁的凹槽内。
区别于现有技术，上述技术方案具有如下优点：设置于下箱体相对的一对侧板上的加强梁能够有效增强下箱体的侧板强度，直接将电池单体成列放置于下箱体内，免去了繁重的模组端板结构，即降低了电池箱的整体生产成本，也有效地使电池箱轻量化。
附图说明
图1为本申请实施例一种电池箱的下箱体内设置有第一加强梁、第二加强梁、横梁以及纵梁的结构示意图；
图2为图1的爆炸结构示意图；
图3为本实施例一种电池箱内设置电池单体的结构示意图；
图4为图3中沿横梁方向的剖视图；
图5为图4中A处的放大结构示意图；
图6为电池单体的结构示意图；
图7为第二加强梁的截面结构示意图。
附图标记说明：
1、电池单体；
11、顶盖；
12、第一表面；
13、第二表面；
2、底板；
22、侧板；
31、第一加强梁；
32、第二加强梁；
321、溢胶槽；
33、第三加强梁；
331、凹槽；
34、台阶状结构；
41、横梁；
411、凸台；
42、纵梁。
具体实施例
为详细说明技术方案的技术内容、构造特征、所实现目的及效果，以下结合具体实施例并配合附图详予说明。
在本申请的描述中，除非另有明确的规定和限定，术语“第一”、“第二”、仅用于描述的目的，而不能理解为指示或暗示相对重要性；除非另有规定或说明，术语“多个”是指两个或两个以上；术语“连接”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接，或电连接；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，可以根据具体情况理解上述术语在本发明中的具体含义。
本说明书的描述中，需要理解的是，本申请实施例所描述的“上”、“下”、“左”、“右”等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者 “下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。
请参阅图1至图6所示，本实施例提供一种电池箱，包括：电池单体1与下箱体，电池单体1排列放置于下箱体内。所述电池单体1包括顶盖11与壳体，所述顶盖11密封连接于壳体上方，顶盖11与壳体之间通过连接件紧密连接，所述壳体包括相对设置的第一表面12以及相对设置的第二表面13，所述第一表面12的面积较第二表面13的面积大。
下箱体包括设置于底面的底板21以及侧面的侧板22，且上部具有开口。所述下箱体相对的一对侧板22上设置有加强梁，所述电池单体1至少一个第一表面12与所述下箱体的侧板22或者加强梁相接触。所述加强梁的作用是加强下箱体相对的一对侧板22的强度。加强梁贴附在下箱体相对的一对侧板22上，加强梁的长度与其所贴附的下箱体相对的一对侧板22长度相同，加强梁的一面直接贴附于下箱体侧板22上并与之相连接。电池单体1成列排设于下箱体内，各个电池单体1的第一表面12相贴合成列，靠近外侧的两个电池单体1至少有一个第一表面12与所述下箱体的侧板22或者加强梁相接触，下箱体的侧板22或者加强梁抵住电池单体1的第一表面12，从而防止当电池内发生热失控时，电池单体1的第一表面12受电池内的膨胀力而向外拱起。下箱体内的电池单体1列数可以是两列以上，每列电池单体1靠外的两个电池单体1均会有至少一个第一表面12与下箱体的侧板22或者加强梁相接触。
在本实施例中，所述加强梁的截面形状为矩形。而在其他实施例中，所述加强梁的截面形状可以是三角形、圆形或者其他几何形状。
在某些实施例中，所述加强梁包括第一加强梁31，所述第一加强梁31设置于下箱体的内部，所述电池单体1至少一个第一表面12与所述第一加强梁31相接触。为了更好地安装第一加强梁31，可以直接将第一加强梁31放置于下箱体的底部，第一加强梁31的组成直角的相邻端面的其中一端面与下箱体底部相贴合，另一端面与下箱体的侧板22相贴合。当然也可以直接将第一加强梁31悬空设置于下箱体相对的一对侧板22上，第一加强梁31仅一有 一个端面与下箱体的侧板22相贴合，第一加强梁31的下侧端面与下箱体底板21之间间隔设置。
本实施例中，所述第一加强梁31的高度低于下箱体的侧板22的高度，所述第一加强梁31与所述下箱体的侧板22之间呈台阶状。在这种实施例中，第一加强梁31放置于下箱体的底部，第一加强梁31的组成直角的相邻端面的其中一端面与下箱体底部相贴合，另一端面与下箱体的侧板22相贴合，第一加强梁31朝外的两个端面以及裸露于第一加强梁31上方的下箱体侧板22组成台阶状结构34，相对于电池单体1的第一表面12完全贴合于第一加强梁31或者电池单体1的第一表面12完全贴合于下箱体侧板22的情况，该台阶状结构34更能够有效抵抗电池单体1内的膨胀力，且能够实现电池箱的轻量化。
本实施例中，所述第一加强梁31与所述下箱体的侧板22一体成型。电池箱的下箱体往往是直接浇筑而成的，将设置于下箱体内的第一加强梁31直接与下箱体一同浇筑而成。所述第一加强梁31与下箱体的侧板22之间呈台阶状时，下箱体的侧板22外侧可以是平直的，在下箱体的内部与之浇筑一体的第一加强梁31形成台阶结构；下箱体的侧板22的截面结构也可以是直接为台阶状的，即下箱体的侧板22下端为掏空的。
在某些实施例中，所述加强梁包括第二加强梁32，所述第二加强梁32设置于下箱体的外部，所述电池单体1至少一个第一表面12与所述下箱体的侧板22相接触。第二加强梁32的一端面贴合于下箱体的侧板22外部，第二加强梁32的延伸方向与下箱体的侧板22延伸方向相同。
本实施例中，所述第二加强梁32与所述下箱体的侧板22一体成型。电池箱的下箱体往往是直接浇筑而成的，将设置于下箱体外的第一加强梁31直接与下箱体一同浇筑而成。
在某些实施例中，所述加强梁包括第一加强梁31以及第二加强梁32，所述第一加强梁31设置于下箱体的内部，所述电池单体1至少一个第一表面 12与所述第一加强梁31相接触，所述第二加强梁32设置于下箱体的外部。为了更好地安装第一加强梁31，可以直接将第一加强梁31放置于下箱体的底部，第一加强梁31的组成直角的相邻端面的其中一端面与下箱体底部相贴合，另一端面与下箱体的侧板22相贴合。当然也可以直接将第一加强梁31悬空设置于下箱体相对的一对侧板22上，第一加强梁31仅一有一个端面与下箱体的侧板22相贴合，第一加强梁31的下侧端面与下箱体底板21之间间隔设置。第二加强梁32的一端面贴合于下箱体的侧板22外部，第二加强梁32的延伸方向与下箱体的侧板22延伸方向相同。本实施例中，所述第一加强梁31与所述下箱体的侧板22一体成型；所述第二加强梁32与所述下箱体的侧板22一体成型。
本实施例中，所述第一加强梁31的高度低于下箱体的侧板22的高度，所述第一加强梁31与所述下箱体的侧板22之间呈台阶状，所述第二加强梁32朝向下箱体的一侧为与所述台阶状结构34相适配的结构。在这种实施例中，第一加强梁31放置于下箱体的底部，第一加强梁31的组成直角的相邻端面的其中一端面与下箱体底部相贴合，另一端面与下箱体的侧板22相贴合，第一加强梁31朝外的两个端面以及裸露于第一加强梁31上方的下箱体侧板22组成台阶状结构34，相对于电池单体1的第一表面12完全贴合于第一加强梁31或者电池单体1的第一表面12完全贴合于下箱体侧板22的情况，该台阶状结构34更能够有效抵抗电池单体1内的膨胀力。下箱体的侧板22的截面结构直接为台阶状的，即下箱体的侧板22下端为掏空的，第二加强梁32与下箱体的台阶状结构34相贴合，既保证了下箱体侧板22外部的平直度，且有效加强了下箱体侧板22的强度，有效抵抗电池单体1热失控后的膨胀力，且能够实现电池箱的轻量化。
如图7所示，本实施例中，所述第二加强梁32朝向下箱体台阶状结构34的上表面设有胶层；胶层的上表面贴附于下箱体台阶状结构34的下表面，胶层的下表面贴附于第二加强梁32朝向下箱体台阶状结构34的上表面，胶 层有效地将第二加强梁32黏贴于下箱体外。为了防止胶层在涂覆的过程中，胶水在第二加强梁32朝向下箱体台阶状结构34的上表面流动，所述第二加强梁32朝向下箱体台阶状结构34的上表面设有溢胶槽321，所述溢胶槽321为沿第二加强梁32长度方向上所开设的槽体结构，溢胶槽321的条数可以是两条以上，另外，各溢胶槽321之间平行设置。
在某些实施例中，该电池箱还包括横梁41，所述横梁41的设置方向与加强梁相垂直，所述横梁41的两端与下箱体的侧板22或者加强梁相连接固定，所述横梁41将下箱体的内部空间分隔成两个以上的电池放置区。各列电池单体1之间通过横梁41加以区隔，与下箱体的侧板22或者加强梁相连接的横梁41还具有加强下箱体强度的作用，更有利于抵抗电池单体1发生热失控之后第一表面12的膨胀力。
本实施例中，所述横梁41的两端通过连接件与所述下箱体的侧板22或者加强梁相连接。在其他实施例中，横梁41的两端也可以通过粘合剂或者卡接结构实现与下箱体的侧板22或者加强梁之间的连接。其有益效果在于，能够加强横梁41与下箱体的侧板22或者加强梁之间的连接强度。
本实施例中，还包括纵梁42，所述纵梁42的设置方向与横梁41相垂直，所述纵梁42或所述横梁41上开设有卡槽结构，所述纵梁42与所述横梁41之间通过卡槽结构相连接，所述横梁41和所述纵梁42共同将所述下箱体的内部空间分隔成两个以上的电池放置区。在纵梁42的作用下，能够将两根相邻横梁41所划分的电池放置区继续划分成两个以上，因此，能够划分成更多的电池放置区。当然，纵梁42的根数可以较横梁41的根数少一根，各横梁41并列设置后，纵梁42跨设于相邻的横梁41之间并通过连接结构与横梁41相连接。
本实施例中，所述加强梁还包括第三加强梁33，所述第三加强梁33设置于所述下箱体的内部且位于所述横梁41上侧，所述第三加强梁33的的设置方向与所述横梁41相垂直，所述横梁41的两端设有凸台411，所述第三加 强梁33在与所述横梁41的凸台411的对应位置开设有凹槽331，所述横梁41两端的凸台411卡设于所述第三加强梁33的凹槽331内。所述第三加强梁33、横梁41以及第一加强梁31或第二加强梁32之间通过连接件连接，连接件连接于凸台411与所述凹槽331所对应的位置。当该电池箱内设置有第一加强梁31时，第三加强梁33的作用是用于增大加强梁与电池单体1的接触面积，使得其抵抗电池单体1膨胀的效果更好；当电池箱内设置有第二加强梁32时，第三加强梁33的作用是直接抵设于电池单体1的第一表面12，使得其抵抗电池单体1膨胀的效果更好。
本实施例中，所述第一加强梁31上设置有凹槽331，横梁41的两端凸台411卡设于第一加强梁31的凹槽331内，使得横梁41与第一加强梁31的连接结构更为牢固，使得其抵抗电池单体1膨胀的效果更好。
需要说明的是，尽管在本文中已经对上述各实施例进行了描述，但并非因此限制本发明的专利保护范围。因此，基于本发明的创新理念，对本文所述实施例进行的变更和修改，或利用本发明说明书及附图内容所作的等效结构或等效流程变换，直接或间接地将以上技术方案运用在其他相关的技术领域，均包括在本发明的专利保护范围之内。

Claims (16)

  1. 一种电池箱，包括：
    电池单体，所述电池单体包括顶盖与壳体，所述顶盖密封连接于壳体上方，所述壳体包括相对设置的第一表面以及相对设置的第二表面，所述第一表面的面积较第二表面的面积大；
    下箱体，包括设置于底面的底板以及侧面的侧板，且上部具有开口，且所述下箱体相对的一对侧板上设置有加强梁；
    所述电池单体至少一个第一表面与所述下箱体的侧板或者加强梁相接触。
  2. 根据权利要求1所述的电池箱，其中，所述加强梁包括第一加强梁，所述第一加强梁设置于下箱体的内部，所述电池单体至少一个第一表面与所述第一加强梁相接触。
  3. 根据权利要求1或2所述的电池箱，其中，所述第一加强梁的高度低于下箱体的侧板的高度，所述第一加强梁与所述下箱体的侧板之间呈台阶状。
  4. 根据权利要求1至3任意一项所述的电池箱，其中，所述第一加强梁与所述下箱体的侧板一体成型。
  5. 根据权利要求1至4任意一项所述的电池箱，其中，所述加强梁包括第二加强梁，所述第二加强梁设置于下箱体的外部，所述电池单体至少一个第一表面与所述下箱体的侧板相接触。
  6. 根据权利要求1至5任意一项所述的电池箱，其中，所述第二加强梁与所述下箱体的侧板一体成型。
  7. 根据权利要求1至6任意一项所述的电池箱，其中，所述加强梁包括第二加强梁，所述第二加强梁设置于下箱体的外部。
  8. 根据权利要求1至7任意一项所述的电池箱，其中，所述第一加强梁的高度低于下箱体的侧板的高度，所述第一加强梁与所述下箱体的侧板之间呈台阶状，所述第二加强梁朝向下箱体的一侧为与所述台阶状结构相适配的 结构。
  9. 根据权利要求1至8任意一项所述的电池箱，其中，所述第二加强梁朝向下箱体台阶状结构的上表面设有胶层。
  10. 根据权利要求1至9任意一项所述的电池箱，其中，所述第二加强梁朝向下箱体台阶状结构的上表面设有溢胶槽。
  11. 根据权利要求1至10任意一项所述的电池箱，其中，所述第一加强梁与所述下箱体的侧板一体成型。
  12. 根据权利要求1至11任意一项所述的电池箱，其中，所述第二加强梁与所述下箱体的侧板一体成型。
  13. 根据权利要求1至12任意一项所述的电池箱，其中，还包括横梁，所述横梁的设置方向与加强梁相垂直，所述横梁的两端与下箱体的侧板或者加强梁相连接固定，所述横梁将下箱体的内部空间分隔成两个以上的电池放置区。
  14. 根据权利要求1至13任意一项所述的电池箱，其中，所述横梁的两端通过连接件与所述下箱体的侧板或者加强梁相连接。
  15. 根据权利要求1至14任意一项所述的电池箱，其中，还包括纵梁，所述纵梁的设置方向与横梁相垂直，所述纵梁或所述横梁上开设有卡槽结构，所述纵梁与所述横梁之间通过卡槽结构相连接，所述横梁和所述纵梁共同将所述下箱体的内部空间分隔成两个以上的电池放置区。
  16. 根据权利要求1至15任意一项所述的电池箱，其中，所述加强梁还包括第三加强梁，所述第三加强梁设置于所述下箱体的内部且位于所述横梁上侧，所述第三加强梁的的设置方向与所述横梁相垂直，所述横梁的两端设有凸台，所述第三加强梁在与所述横梁的凸台的对应位置开设有凹槽，所述横梁两端的凸台卡设于所述第三加强梁的凹槽内。
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