WO2019184497A1 - 电池箱体以及电池箱 - Google Patents

电池箱体以及电池箱 Download PDF

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Publication number
WO2019184497A1
WO2019184497A1 PCT/CN2018/124620 CN2018124620W WO2019184497A1 WO 2019184497 A1 WO2019184497 A1 WO 2019184497A1 CN 2018124620 W CN2018124620 W CN 2018124620W WO 2019184497 A1 WO2019184497 A1 WO 2019184497A1
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WO
WIPO (PCT)
Prior art keywords
insulating
bottom plate
battery case
battery
buffer sheet
Prior art date
Application number
PCT/CN2018/124620
Other languages
English (en)
French (fr)
Inventor
王磊
王志超
王德荣
王鹏
周灵刚
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
Priority to US16/981,711 priority Critical patent/US20210020892A1/en
Priority to EP18912740.0A priority patent/EP3758085B1/en
Publication of WO2019184497A1 publication Critical patent/WO2019184497A1/zh
Priority to US18/381,653 priority patent/US20240047835A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • H01M50/289—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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 battery technologies, and in particular, to a battery case and a battery case.
  • secondary batteries rechargeable batteries
  • hybrid vehicles or electric vehicles With the continuous development of new energy technologies, secondary batteries (rechargeable batteries) are becoming more and more widely used, such as hybrid vehicles or electric vehicles.
  • the safety of devices using secondary batteries is gradually exposed to the public's field of vision, which also affects the development of secondary batteries.
  • a plurality of unit cells are grouped to form a battery module.
  • a plurality of battery modules are packaged by a case to form a battery case.
  • the battery box is to increase the energy density, and the technical solution basically adopts the bottomless solution of the bottom of the battery module.
  • the use of the non-backplane solution will also bring about the problem of electrical box insulation and the control of the amount of glue applied to the bottom of the battery.
  • the safety distance between the single battery and the cabinet and the thickness of the glue cannot be guaranteed.
  • the battery system often causes an abnormal insulation alarm because the cabinet is in direct contact with the single battery, and the battery box may also be in danger due to insulation abnormality.
  • the embodiment of the present application provides a battery case and a battery case.
  • the battery case can effectively maintain the insulation state with the single battery, avoiding the contact between the single battery and the battery case, resulting in abnormal insulation alarm, and at the same time controlling the amount of glue to ensure uniform thickness of the glue.
  • the embodiment of the present application provides a battery case, comprising: a bottom plate and a side plate connected to the bottom plate, the bottom plate and the side plate enclosing a receiving portion for accommodating the unit battery; the plurality of first insulation The strip is disposed on the surface of the bottom plate facing the receiving portion, and the plurality of first insulating strips are sequentially spaced apart along the length direction or the width direction of the bottom plate, and a glue receiving groove is formed between the adjacent two first insulating strips.
  • the battery case further includes a plurality of second insulating strips, wherein the plurality of first insulating strips and each of the second insulating strips are disposed to intersect, adjacent to the two first insulating strips and adjacent two A plastic tank is formed between the second insulating strips.
  • the battery case further includes a first side insulation strip extending along a length direction of the bottom plate and covering the connection between the long side of the bottom plate and the side plate.
  • the first side insulating strip has an L-shaped cross section.
  • the battery case further includes a second side insulation strip extending along a width direction of the bottom plate and covering a wide side of the bottom plate connected to the side plate.
  • the battery case of the embodiment of the present application has a bottom plate capable of supporting the unit cells and a side plate connected to the bottom plate.
  • a plurality of first insulating strips having good insulating properties are disposed on the bottom plate.
  • the first insulating strip is disposed between the bottom of the unit cell and the bottom plate, and is capable of isolating the single cell and the bottom plate so as to be insulated from each other by a predetermined distance therebetween, so as to avoid contact between the two and cause an insulation abnormality, resulting in Electrical connection and there is a danger of short-circuit fire.
  • a glue groove is formed between two adjacent first insulating strips to facilitate filling a predetermined amount of insulating glue.
  • the first insulating strip can prevent the insulating glue from overflowing.
  • the first insulating strip can control the thickness of the insulating rubber layer by its own thickness, thereby ensuring the smoothness of the insulating rubber surface and avoiding waste of the insulating rubber.
  • an embodiment of the present application provides a battery case, comprising: the battery case body as described above; a plurality of battery assemblies disposed in the receiving portion, the plurality of battery assemblies being arranged side by side along the width direction of the bottom plate, each of each The battery assembly includes a plurality of unit cells arranged side by side along the length direction of the bottom plate; the first insulating strip is disposed between the bottom of the battery assembly and the bottom plate.
  • the battery case further includes a first insulating buffer sheet extending along a length direction of the bottom plate, and the first insulating buffer sheet is disposed on the battery assembly and the battery adjacent to the side plate Between the cabinets.
  • the first insulating buffer sheet includes intersecting first connecting segments and second connecting segments, the first connecting segments are bonded to the surface of the battery assembly facing the side plates, and the second connecting segments are located at the battery Between the bottom of the assembly and the bottom plate.
  • the battery case further includes a second insulating buffer sheet extending in a width direction of the bottom plate, a bottom of the two unit cells located at the outermost side of the battery assembly, and a battery case A second insulating buffer sheet is disposed between the bodies.
  • the second insulating buffer sheet includes a receiving recess, a portion of the bottom of the unit cell is inserted into the receiving recess to be covered by the second insulating buffer sheet, and the second insulating buffer sheet is bonded to the single body. battery.
  • FIG. 1 is a schematic exploded view of a battery case and a unit battery according to an embodiment of the present application
  • FIG. 2 is a schematic view showing the overall structure of a battery case according to an embodiment of the present application.
  • FIG. 3 is a schematic structural view of a first insulating strip, a first side insulating strip, and a second side insulating strip according to an embodiment of the present application;
  • FIG. 4 is a schematic overall structural view of a first insulating buffer sheet according to an embodiment of the present application.
  • FIG. 5 is a schematic overall structural view of a second insulating buffer sheet according to an embodiment of the present application.
  • a second insulating buffer sheet 101, a first covering sheet; 102, a second covering sheet; 103, a third covering sheet; 104, a fourth covering sheet;
  • X length direction
  • Y width direction
  • Fig. 1 schematically shows an exploded structure of a battery case 1 and a unit cell 99 according to an embodiment of the present application.
  • Fig. 2 schematically shows the overall structure of a battery case 1 of an embodiment of the present application.
  • Fig. 3 schematically shows a combined structure of a first insulating strip 4, a first side insulating strip 7, and a second side insulating strip 8 according to an embodiment of the present application.
  • Fig. 4 schematically shows the overall structure of a first insulating buffer sheet 9 of an embodiment of the present application.
  • Fig. 5 schematically shows the overall structure of a second insulating buffer sheet 10 of an embodiment of the present application.
  • the battery case 1 of the present application is used to accommodate a single cell 99 to form a protection for the unit cell 99. It can also be housed in a wire harness or other electronic component associated with the use of the unit cell 99 and protected.
  • the unit cell 99 of the present embodiment may be a square battery.
  • the battery case 1 of the embodiment of the present application includes a bottom plate 2 and a side plate 3 connected to the bottom plate 2.
  • the bottom plate 2 and the side plates 3 are enclosed to form a receiving portion for accommodating the unit cells 99.
  • the unit cell 99 is placed in the battery case 1 through the opening of the housing.
  • the bottom plate 2 of the present embodiment is provided with a plurality of first insulating strips 4 on the surface facing the receiving portion.
  • the plurality of first insulating strips 4 are sequentially spaced apart along the longitudinal direction X or the width direction Y of the bottom plate 2.
  • a glue receiving groove 5 is formed between two adjacent first insulating strips 4.
  • the first insulating strip 4 isolates the unit cell 99 and the bottom plate 2 to maintain a predetermined distance between the unit cell 99 and the bottom plate 2.
  • the effective insulation between the unit cell 99 and the bottom plate 2 can be maintained, and the insulation abnormality alarm occurs when the unit cell 99 directly contacts the bottom plate 2, and the burr existing on the surface of the bottom plate 2 is prevented from puncturing the unit cell 99.
  • the housing effectively protects the use of the single battery 99. Generally, the flatness of the bottom plate 2 is poor, and the single cell 99 is likely to come into contact with the bottom plate 2 to cause insulation abnormality.
  • the height of the first insulating strip 4 can offset the surface difference of the bottom plate 2, ensuring that the tops of the individual cells 99 are flush, and effectively avoiding the surface and the single body of the bottom plate 2.
  • the battery 99 comes into contact.
  • the adhesive tank 5 formed between the adjacent two first insulating strips 4 is filled with an insulating paste. Since the thickness of the first insulating strip 4 itself can be designed to a predetermined value as needed, the thickness of the insulating rubber layer can be accurately controlled by the thickness of the first insulating strip 4. Thus, when the unit cell 99 is seated on the first insulating strip 4 on the bottom plate 2, the insulating glue is flattened by its own gravity. The insulating rubber is blocked by the first insulating strip 4, and does not overflow in a non-directional manner, so as to prevent the insulating rubber from overflowing and contaminating other structural members. At the same time, it also avoids waste of insulating glue and saves costs.
  • the insulating rubber layer can form an insulating protective layer, further avoiding the insulation abnormality alarm when the bottom plate 2 is in contact with the single cell 99, and also avoiding the burrs on the bottom plate 2 from piercing the single cell 99.
  • the adjacent two first insulating strips 4 of this embodiment are disposed in parallel.
  • the plastic tanks 5 formed between the two adjacent first insulating strips 4 have the same width.
  • the plurality of first insulating strips 4 are arranged in parallel with each other at equal intervals.
  • the battery case 1 of the present embodiment further includes a plurality of second insulating strips 6.
  • a plurality of first insulating strips 4 and each of the second insulating strips 6 are disposed to intersect.
  • a glue receiving groove 5 is formed between two adjacent first insulating strips 4 and two adjacent second insulating strips 6.
  • the glue tank 5 is an enclosed space, and the insulating glue can overflow in the horizontal direction.
  • a plurality of second insulating strips 6 are disposed in parallel between the two. Further, a plurality of second insulating strips 6 are disposed at equal intervals between the two.
  • the plurality of first insulating strips 4 and the plurality of second insulating strips 6 form a grid-like structure, which can effectively support the unit cells 99 and prevent the unit cells 99 from coming into contact with the bottom plate 2.
  • the first insulating strip 4 and the second insulating strip 6 are perpendicular to each other.
  • first insulating strip 4 and the second insulating strip 6 are both fixedly bonded to the bottom plate 2 by bonding.
  • a double-sided tape 100 is disposed on the first insulating strip 4 and the second insulating strip 6 to conveniently and quickly affix the first insulating strip 4 and the second insulating strip 6 to the bottom plate 2.
  • the battery case 1 of the present embodiment further includes a first side insulating strip 7.
  • the first side insulating strip 7 extends along the longitudinal direction X of the bottom plate 2 and is disposed on the joint of the long side of the bottom plate 2 and the side plate 3.
  • the bottom plate 2 includes two opposite long sides.
  • a first side insulation strip 7 is disposed between each of the long sides and the side plates 3. The first side insulating strip 7 can effectively isolate the unit cell 99 and the side plate 3, avoiding the insulation abnormality of the contact between the unit cell 99 and the side plate 3, and also avoiding the burr on the side plate 3 to pierce the unit cell 99. .
  • the first side insulation strip 7 comprises a first long side 7a and a second long side 7b.
  • the first long side 7a is connected to the side plate 3, and the second long side 7b is connected to the bottom plate 2.
  • the first long side 7a and the second long side 7b are perpendicular to each other such that the first side insulating strip 7 has an L-shaped cross section as a whole.
  • the first side insulation strip 7 is fixedly connected to the battery case 1 by bonding.
  • the double-sided tape 100 is disposed on the first long side 7a and the second long side 7b, and the first long side 7a is conveniently attached to the side plate 3, and the second long side 7b is pasted on the bottom plate 2.
  • the first insulating strips 4 are sequentially spaced apart along the length direction X of the bottom plate 2, all of the first insulating strips 4 are disposed between the two first side insulating strips 7.
  • One end of each of the first insulating strips 4 is connected to one first side insulating strip 7, and the other end is connected to the other first side insulating strip 7.
  • the battery case 1 of the present embodiment further includes a second side insulating strip 8.
  • the second side insulating strip 8 extends along the width direction Y of the bottom plate 2 and is disposed on the wide side of the bottom plate 2 that is connected to the side plate 3.
  • the bottom plate 2 includes two opposite wide sides.
  • a second side insulation strip 8 is disposed on each of the wide sides.
  • the bottom plate 2 and the side plates 3 are of a steel structure.
  • the first insulating strip 4, the second insulating strip 6, the first side insulating strips 7, and the second side insulating strips 8 are all plastic or insulating resin.
  • the battery case 1 of the embodiment of the present application has a bottom plate 2 capable of supporting the unit cells 99 and a side plate 3 connected to the bottom plate 2.
  • a plurality of first insulating strips 4 having good insulating properties are disposed on the bottom plate 2.
  • the first insulating strip 4 is disposed between the bottom of the unit cell 99 and the bottom plate 2, and is capable of isolating the unit cell 99 and the bottom plate 2 so as to be insulated from each other by a predetermined distance therebetween to prevent insulation from being in contact with each other. This leads to an electrical connection between the two and there is a danger of a short circuit fire.
  • a glue receiving groove 5 is formed between the two adjacent first insulating strips 4 to facilitate filling a predetermined amount of insulating glue.
  • the first insulating strip 4 can prevent the insulating glue from overflowing.
  • the first insulating strip 4 can control the thickness of the insulating rubber layer by its own thickness, thereby ensuring the smoothness of the surface of the insulating rubber and avoiding waste of the insulating rubber.
  • the embodiment of the present application further provides a battery case including a battery case 1 and a plurality of battery assemblies disposed in the battery case 1 .
  • the battery box is capable of providing power to the electrical equipment.
  • a plurality of battery assemblies are arranged side by side along the width direction Y of the bottom plate 2.
  • Each of the battery assemblies includes a plurality of unit cells 99 arranged side by side along the length direction X of the bottom plate 2.
  • the first insulating strip 4 is disposed between the bottom of the battery assembly and the bottom plate 2. Since the first insulating strip 4 insulates the single cell 99 from the bottom plate 2, the single cell 99 does not come into contact with the bottom plate 2, so that the overall safety of the battery case is good and the working process is stable.
  • the battery case of the present embodiment further includes a first insulating buffer sheet 9.
  • the first insulating buffer sheet 9 extends along the longitudinal direction X of the bottom plate 2.
  • a first insulating buffer sheet 9 is disposed between the battery assembly adjacent to the side plate 3 and the battery case 1.
  • the length of the first insulating buffer sheet 9 may be equal to the length of the battery assembly.
  • the first insulating buffer sheet 9 can insulate the single cell 99 from the battery case 1 to prevent the single cell 99 from coming into contact with the battery case 1, or the unit cell 99 is burred by the battery case 1. Pierced.
  • the first insulating buffer sheet 9 can be deformed by the pressing of the unit cell 99 to keep the unit cell 99 and the bottom plate 2 tight, avoiding the occurrence of a gap and causing the position of the unit cell 99 to be unstable.
  • the material of the first insulating buffer sheet 9 is plastic or rubber.
  • the first insulating buffer sheet 9 includes intersecting first connecting segments 9a and second connecting segments 9b.
  • the first connecting portion 9a is bonded to the surface of the battery assembly facing the side panel 3.
  • the first connecting section 9a serves to isolate the side and side panels 3 of the battery assembly.
  • the double-sided tape 100 is disposed on the first connecting portion 9a, and the first connecting portion 9a is conveniently and quickly attached to the side surface of the battery assembly in the width direction Y.
  • the second connecting section 9b is located between the bottom of the battery assembly and the bottom plate 2.
  • the second connecting section 9b serves to isolate the bottom of the battery assembly and the bottom plate 2.
  • the double-sided tape 100 is disposed on the second connecting portion 9b to facilitate the quick attachment of the second connecting portion 9b to the bottom surface of the battery assembly, thereby improving the connection strength of the first insulating buffer sheet 9 and preventing falling off.
  • the first connecting section 9a may be perpendicular to the second connecting section 9b.
  • the battery case 1 of the present embodiment further includes a second insulating buffer sheet 10.
  • the second insulating buffer sheet 10 extends in the width direction Y of the bottom plate 2.
  • a second insulating buffer sheet 10 is disposed between the bottoms of the two outermost cells 99 in the battery assembly and the battery case 1.
  • the second insulating buffer sheet 10 is capable of isolating the two outermost single cells 99 and the battery case 1 in the battery assembly to prevent the single cell 99 from coming into contact with the battery case 1, or the unit cell 99 being replaced by the battery case
  • the burr existing on 1 is punctured.
  • the length of the second insulating buffer sheet 10 may be equal to the width of the battery assembly.
  • the second insulating buffer sheet 10 is deformed by the pressing of the unit cell 99 to keep the unit cell 99 and the battery case 1 tight, avoiding a gap between the two and causing the position of the unit cell 99. Unstable.
  • the material of the second insulating buffer sheet 10 is plastic or rubber.
  • the second insulating buffer sheet 10 includes a receiving recess. A part of the bottom of the unit cell 99 is inserted into the accommodating recess, and the inserted portion is covered by the second insulating buffer sheet 10.
  • the second insulating buffer sheet 10 includes a first cover sheet 101 and a second cover sheet 102 that are perpendicular to each other and extend in the width direction Y of the bottom plate 2, and, together with the first cover sheet 101 and The second cover sheet 102 is simultaneously connected to the third cover sheet 103 and the fourth cover sheet 104.
  • the third cover sheet 103 is simultaneously perpendicular to the first cover sheet 101 and the second cover sheet 102.
  • the fourth wrapping sheet 104 is simultaneously perpendicular to the first covering sheet 101 and the second covering sheet 102.
  • the third wrapping sheet 103 and the fourth wrapping sheet 104 are disposed in parallel.
  • the third wrapping sheet 103 is disposed at one end of the first covering sheet 101 and the second covering sheet 102.
  • the fourth wrapping sheet 104 is disposed at the other end of the first covering sheet 101 and the second covering sheet 102.
  • the first cover sheet 101, the second cover sheet 102, the third cover sheet 103, and the fourth cover sheet 104 form a housing recess.
  • the first wrapping sheet 101 is bonded to the side surface of the battery assembly in the longitudinal direction X
  • the second wrapping sheet 102 is bonded to the bottom of the unit cell 99.
  • the third wrapping sheet 103 is bonded to one of the two side faces of the unit cell 99 which are opposed in the width direction Y of the bottom plate 2.
  • the fourth wrapping sheet 104 is bonded to the other of the two side faces of the unit cell 99 which are opposed in the width direction Y of the bottom plate 2.
  • the double-sided tape 100 is disposed on the third covering sheet 103 to facilitate the quick bonding of the second insulating buffer sheet 10 to the side of the unit cell 99.
  • the battery case of this embodiment further includes an insulating glue layer (not shown).
  • the insulating rubber layer is disposed in the adhesive tank 5.
  • the battery assembly is fixed to the bottom plate 2 by an insulating layer.
  • the insulating rubber layer can form an insulating protective layer, further avoiding the insulation abnormality alarm when the bottom plate 2 is in contact with the single cell 99, and also avoiding the burrs on the bottom plate 2 from piercing the single cell 99.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请涉及一种电池箱体以及电池箱。电池箱体包括：底板以及与底板相连接的侧板，底板和侧板围合形成用于容纳单体电池的容纳部；多个第一绝缘条，设置于底板朝向容纳部的表面，多个第一绝缘条沿底板的长度方向或宽度方向依次间隔设置，相邻两个第一绝缘条之间形成容胶槽。本申请实施例的电池箱体能够与单体电池之间有效保持绝缘状态，避免单体电池与电池箱体发生接触而导致绝缘异常报警，同时能够控制涂胶量，保证涂胶厚度均匀。

Description

电池箱体以及电池箱
相关申请的交叉引用
本申请要求享有于2018年03月30日提交的名称为“电池箱体以及电池箱”的中国专利申请201820465105.8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
本申请涉及电池技术领域，特别是涉及一种电池箱体以及电池箱。
背景技术
随着新能源技术不断发展，二次电池(可充电电池)应用越来越广泛，例如混合动力汽车或电动汽车。但使用二次电池的装置的安全问题也逐渐暴露在大众视野，也影响着二次电池的发展。单体电池通常需要成组使用时，需要使用汇流排将每个单体电池串联或并联。多个单体电池成组形成电池模组。多个电池模组通过箱体封装起来形成电池箱。目前，电池箱为提升能量密度，技术方案基本上都采用电池模组底部涂胶的无底板方案。但是采用无底板方案也会带来电箱绝缘问题及电池底部涂胶量的控制问题，无法保证单体电池与箱体的安全距离及涂胶厚度。电池系统经常因为箱体与单体电池直接接触而造成绝缘异常报警，电池箱也会因为绝缘异常导致出现危险情况。
发明内容
本申请实施例提供一种电池箱体以及电池箱。电池箱体能够与单体电池之间有效保持绝缘状态，避免单体电池与电池箱体发生接触而导致绝缘异常报警，同时能够控制涂胶量，保证涂胶厚度均匀。
一方面，本申请实施例提出了一种电池箱体，其包括：底板以及与底 板相连接的侧板，底板和侧板围合形成用于容纳单体电池的容纳部；多个第一绝缘条，设置于底板朝向容纳部的表面，多个第一绝缘条沿底板的长度方向或宽度方向依次间隔设置，相邻两个第一绝缘条之间形成容胶槽。
根据本申请实施例的一个方面，电池箱体还包括多个第二绝缘条，多个第一绝缘条和每个第二绝缘条相交设置，相邻两个第一绝缘条和相邻两个第二绝缘条之间形成容胶槽。
根据本申请实施例的一个方面，电池箱体还包括第一侧边绝缘条，第一侧边绝缘条沿底板的长度方向延伸、且覆设于底板的长边和侧板的连接处。
根据本申请实施例的一个方面，第一侧边绝缘条的横截面呈L形。
根据本申请实施例的一个方面，电池箱体还包括第二侧边绝缘条，第二侧边绝缘条沿底板的宽度方向延伸、且覆设于底板上与侧板相连接的宽边。
本申请实施例的电池箱体，具有能够承托单体电池的底板以及与底板相连接的侧板。底板上设置有具有良好绝缘性能的多个第一绝缘条。第一绝缘条设置于单体电池底部和底板之间，能够隔离单体电池和底板，使两者之间保持预定距离而彼此绝缘，避免两者发生接触而出现绝缘异常，导致两者之间电连接，并存在短路起火的危险。相邻两个第一绝缘条之间形成容胶槽，方便填充预定量的绝缘胶。第一绝缘条能够阻止绝缘胶溢出。第一绝缘条通过自身厚度能够控制绝缘胶层的厚度，从而保证绝缘胶表面平整，也避免绝缘胶浪费。
另一个方面，本申请实施例提供一种电池箱，其包括：如上述的电池箱体；多个电池组合体，设置于容纳部，多个电池组合体沿底板的宽度方向并排设置，每个电池组合体包括多个沿底板的长度方向并排设置的单体电池；第一绝缘条设置于电池组合体的底部与底板之间。
根据本申请实施例的另一个方面，电池箱还包括第一绝缘缓冲片，第一绝缘缓冲片沿底板的长度方向延伸，第一绝缘缓冲片设置于与侧板相邻的电池组合体和电池箱体之间。
根据本申请实施例的另一个方面，第一绝缘缓冲片包括相交的第一连 接段和第二连接段，第一连接段粘接于电池组合体朝向侧板的表面，第二连接段位于电池组合体的底部与底板之间。
根据本申请实施例的另一个方面，电池箱还包括第二绝缘缓冲片，第二绝缘缓冲片沿底板的宽度方向延伸，电池组合体中位于最外侧的两个单体电池的底部和电池箱体之间均设置有第二绝缘缓冲片。
根据本申请实施例的另一个方面，第二绝缘缓冲片包括容纳凹部，单体电池的底部的一部分插入容纳凹部，以被第二绝缘缓冲片包覆，第二绝缘缓冲片粘接于单体电池。
附图说明
下面将通过参考附图来描述本申请示例性实施例的特征、优点和技术效果。
图1是本申请的一实施例的电池箱体和单体电池的分解结构示意图；
图2是本申请一实施例的电池箱体的整体结构示意图；
图3是本申请一实施例的第一绝缘条、第一侧边绝缘条和第二侧边绝缘条的组合结构示意图；
图4是本申请一实施例的第一绝缘缓冲片的整体结构示意图；
图5是本申请一实施例的第二绝缘缓冲片的整体结构示意图。
在附图中，附图并未按照实际的比例绘制。
1、电池箱体；
2、底板；
3、侧板；
4、第一绝缘条；
5、容胶槽；
6、第二绝缘条；
7、第一侧边绝缘条；7a、第一长边；7b、第二长边；
8、第二侧边绝缘条；
9、第一绝缘缓冲片；9a、第一连接段；9b、第二连接段；
10、第二绝缘缓冲片；101、第一包覆片；102、第二包覆片；103、第三包覆片；104、第四包覆片；
99、单体电池；
100、双面胶；
X、长度方向；Y、宽度方向。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个或两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指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”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
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。
为了更好地理解本申请，下面结合图1至图5对本申请实施例的电池箱体进行详细描述。
图1示意性地显示了本申请一实施例的电池箱体1和单体电池99的分解结构。图2示意性地显示了本申请一实施例的电池箱体1的整体结构。图3示意性地显示了本申请一实施例的第一绝缘条4、第一侧边绝缘条7和第二侧边绝缘条8的组合结构。图4示意性地显示了本申请一实施例的第一绝缘缓冲片9的整体结构。图5示意性地显示了本申请一实施例 的第二绝缘缓冲片10的整体结构。
如图1所示，本申请的电池箱体1用于容纳单体电池99，以对单体电池99形成保护。同时也可以容纳于与单体电池99使用相关的线束或其他电子元器件，并对其进行保护。本实施例的单体电池99可以是方形电池。
本申请实施例的电池箱体1，包括底板2以及与底板2相连接的侧板3。底板2和侧板3围合形成用于容纳单体电池99的容纳部。单体电池99通过容纳部的开口放入电池箱体1。本实施例的底板2朝向容纳部的表面上设置有多个第一绝缘条4。多个第一绝缘条4沿底板2的长度方向X或宽度方向Y依次间隔设置。相邻两个第一绝缘条4之间形成容胶槽5。
一方面，单体电池99安装固定于电池箱体1内时，第一绝缘条4隔离单体电池99和底板2，使单体电池99与底板2之间保持预定距离。这样，单体电池99与底板2之间能够保持有效绝缘，避免出现单体电池99直接接触底板2而发生绝缘异常报警，另外，也避免底板2的表面存在的毛刺刺破单体电池99的壳体，有效保护单体电池99的使用安全。通常底板2的平面度较差，容易导致单体电池99与底板2相接触产生绝缘异常。在底板2上设置第一绝缘条4后，第一绝缘条4的自身高度能够抵消底板2的表面高低差值，保证各个单体电池99顶部齐平，也有效避免底板2的表面与单体电池99发生接触。
另一方面，安装固定单体电池99之前，预先在相邻两个第一绝缘条4之间形成的容胶槽5内填充绝缘胶。由于第一绝缘条4自身厚度可以根据需要设计为预定值，因此可以通过第一绝缘条4的厚度来准确控制绝缘胶层的厚度。这样，当单体电池99座接于底板2上的第一绝缘条4上时，会在自身重力作用下将绝缘胶压平。绝缘胶受到第一绝缘条4的阻挡，不会无方向地溢出，避免绝缘胶溢出污染其它结构件。同时，也避免绝缘胶浪费，节省成本。绝缘胶层能够形成绝缘保护层，进一步避免底板2与单体电池99发生接触而出现绝缘异常报警，也避免底板2上的毛刺刺破单体电池99。
本实施例的相邻两个第一绝缘条4平行设置。单体电池99座接于相 邻两个第一绝缘条4时，能够为单体电池99提供稳定平衡支撑，避免单体电池99发生倾斜。相邻两个第一绝缘条4之间形成的容胶槽5宽度一致。可选地，多个第一绝缘条4彼此之间等间距平行设置。
如图2所示，本实施例的电池箱体1还包括多个第二绝缘条6。多个第一绝缘条4和每个第二绝缘条6相交设置。相邻两个第一绝缘条4和相邻两个第二绝缘条6之间形成容胶槽5。该容胶槽5为封闭空间，在水平方向上能够绝缘胶溢出。可选地，多个第二绝缘条6两两之间平行间隔设置。进一步地，多个第二绝缘条6两两之间等间距平行间隔设置。多个第一绝缘条4和多个第二绝缘条6形成栅格状结构，能够有效支撑单体电池99，并阻止单体电池99和底板2接触。可选地，第一绝缘条4和第二绝缘条6相互垂直。
在一个实施例中，第一绝缘条4和第二绝缘条6均通过粘接的方式连接固定于底板2上。可选地，在第一绝缘条4和第二绝缘条6上设置双面胶100，方便快速地将第一绝缘条4和第二绝缘条6粘贴于底板2上。
结合图2和图3所示，本实施例的电池箱体1还包括第一侧边绝缘条7。第一侧边绝缘条7沿底板2的长度方向X延伸、且覆设于底板2的长边和侧板3的连接处。底板2包括相对的两个长边。每个长边与侧板3之间设置有一个第一侧边绝缘条7。第一侧边绝缘条7能够有效隔离单体电池99和侧板3，避免单体电池99和侧板3发生接触而出现绝缘异常，同时也避免侧板3上的毛刺刺破单体电池99。
可选地，第一侧边绝缘条7包括第一长边7a和第二长边7b。第一长边7a与侧板3相连接，第二长边7b与底板2相连接。第一长边7a和第二长边7b相互垂直，以使第一侧边绝缘条7整体横截面呈L形结构。
可选地，第一侧边绝缘条7通过粘接的方式连接固定于电池箱体1上。在一个示例中，在第一长边7a和第二长边7b上均设置双面胶100，方便快速地将第一长边7a粘贴于侧板3，第二长边7b粘贴于底板2上。当第一绝缘条4沿底板2的长度方向X依次间隔设置时，所有第一绝缘条4设置于两个第一侧边绝缘条7之间。每个第一绝缘条4的一端与一个第一侧边绝缘条7相连接，另一端与另一个第一侧边绝缘条7相连接。
本实施例的电池箱体1还包括第二侧边绝缘条8。第二侧边绝缘条8沿底板2的宽度方向Y延伸、且设置于底板2上与侧板3相连接的宽边。底板2包括相对的两个宽边。每个宽边上设置有一个第二侧边绝缘条8。当第一绝缘条4沿底板2的宽度方向Y依次间隔设置时，所有第一绝缘条4设置于两个第二侧边绝缘条8之间。每个第一绝缘条4的一端与一个第二侧边绝缘条8相连接，另一端与另一个第二侧边绝缘条8相连接。
可选地，底板2和侧板3为钢结构。第一绝缘条4、第二绝缘条6、第一侧边绝缘条7以及第二侧边绝缘条8均为塑料或绝缘树脂。
本申请实施例的电池箱体1，具有能够承托单体电池99的底板2以及与底板2相连接的侧板3。底板2上设置有具有良好绝缘性能的多个第一绝缘条4。第一绝缘条4设置于单体电池99底部和底板2之间，能够隔离单体电池99和底板2，使两者之间保持预定距离而彼此绝缘，避免两者发生接触而出现绝缘异常，导致两者之间电连接，并存在短路起火的危险。相邻两个第一绝缘条4之间形成容胶槽5，方便填充预定量的绝缘胶。第一绝缘条4能够阻止绝缘胶溢出。第一绝缘条4通过自身厚度能够控制绝缘胶层的厚度，从而保证绝缘胶表面平整，也避免绝缘胶浪费。
本申请实施例还提出一种电池箱，包括电池箱体1以及设置于电池箱体1内的多个电池组合体。电池箱能够为用电设备提供电力。多个电池组合体沿底板2的宽度方向Y并排设置。每个电池组合体包括多个沿底板2的长度方向X并排设置的单体电池99。第一绝缘条4设置于电池组合体的底部与底板2之间。由于第一绝缘条4将单体电池99和底板2绝缘隔离开，因此单体电池99不会与底板2发生接触，从而使得电池箱整体安全性好，工作过程稳定。
结合图1和图4所示，本实施例的电池箱还包括第一绝缘缓冲片9。第一绝缘缓冲片9沿底板2的长度方向X延伸。与侧板3相邻的电池组合体和电池箱体1之间设置有第一绝缘缓冲片9。第一绝缘缓冲片9的长度可以与电池组合体的长度相等。第一绝缘缓冲片9能够将单体电池99与电池箱体1之间绝缘隔离，以避免单体电池99与电池箱体1发生接触，或者单体电池99被电池箱体1上存在的毛刺刺破。第一绝缘缓冲片9受 到单体电池99的挤压能够发生一定的变形，以使单体电池99和底板2之间保持紧密，避免出现间隙而导致单体电池99位置不稳定。可选地，第一绝缘缓冲片9的材料为塑料或橡胶。
在一个实施例中，第一绝缘缓冲片9包括相交的第一连接段9a和第二连接段9b。第一连接段9a粘接于电池组合体朝向侧板3的表面。第一连接段9a用于隔离电池组合体的侧面和侧板3。可选地，第一连接段9a上设置双面胶100，方便快速地将第一连接段9a粘贴于电池组合体的在宽度方向Y上的侧面。第二连接段9b位于电池组合体的底部与底板2之间。第二连接段9b用于隔离电池组合体的底部和底板2。可选地，第二连接段9b上设置双面胶100，方便快速地将第二连接段9b粘贴于电池组合体的底面，提高第一绝缘缓冲片9的连接强度，不易发生脱落。可选地，第一连接段9a可以与第二连接段9b相互垂直。
结合图1和图5所示，本实施例的电池箱体1还包括第二绝缘缓冲片10。第二绝缘缓冲片10沿底板2的宽度方向Y延伸。在电池组合体的长度方向X上，电池组合体中位于最外侧的两个单体电池99的底部和电池箱体1之间均设置有第二绝缘缓冲片10。第二绝缘缓冲片10能够隔离电池组合体中两个最外侧的单体电池99和电池箱体1，以避免单体电池99与电池箱体1发生接触，或者单体电池99被电池箱体1上存在的毛刺刺破。第二绝缘缓冲片10的长度可以与电池组合体的宽度相等。第二绝缘缓冲片10受到单体电池99的挤压会发生一定的变形，以使单体电池99和电池箱体1之间保持紧密，避免两者之间出现间隙而导致单体电池99位置不稳定。可选地，第二绝缘缓冲片10的材料为塑料或橡胶。
在一个实施例中，第二绝缘缓冲片10包括容纳凹部。单体电池99的底部的一部分插入容纳凹部，插入的部分被第二绝缘缓冲片10包覆。在一个实施例中，第二绝缘缓冲片10包括相互垂直、且沿底板2的宽度方向Y延伸的第一包覆片101和第二包覆片102，以及，与第一包覆片101和第二包覆片102同时相连接的第三包覆片103和第四包覆片104。第三包覆片103同时与第一包覆片101和第二包覆片102相垂直。第四包覆片104同时与第一包覆片101和第二包覆片102相垂直。第三包覆片103和 第四包覆片104平行设置。第三包覆片103设置于第一包覆片101和第二包覆片102的一端。第四包覆片104设置于第一包覆片101和第二包覆片102的另一端。第一包覆片101、第二包覆片102、第三包覆片103和第四包覆片104形成容纳凹部。第一包覆片101粘接于电池组合体的在长度方向X上的侧面，第二包覆片102与单体电池99底部贴合。第三包覆片103与单体电池99沿底板2的宽度方向Y上相对的两个侧面中的一个侧面贴合。第四包覆片104与单体电池99沿底板2的宽度方向Y上相对的两个侧面中的另一个侧面贴合。可选地，第三包覆片103上设置双面胶100，方便快速地将第二绝缘缓冲片10粘接于单体电池99的侧面。
本实施例的电池箱还包括绝缘胶层(图中未示出)。绝缘胶层设置于容胶槽5。电池组合体通过绝缘胶层连接固定于底板2。绝缘胶层能够形成绝缘保护层，进一步避免底板2与单体电池99发生接触而出现绝缘异常报警，也避免底板2上的毛刺刺破单体电池99。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (10)

  1. 一种电池箱体，其中，包括：
    底板以及与所述底板相连接的侧板，所述底板和所述侧板围合形成用于容纳单体电池的容纳部；
    多个第一绝缘条，设置于所述底板朝向所述容纳部的表面，多个所述第一绝缘条沿所述底板的长度方向或宽度方向依次间隔设置，相邻两个所述第一绝缘条之间形成容胶槽。
  2. 根据权利要求1所述的电池箱体，其中，还包括多个第二绝缘条，多个所述第一绝缘条和每个所述第二绝缘条相交设置，相邻两个所述第一绝缘条和相邻两个所述第二绝缘条之间形成所述容胶槽。
  3. 根据权利要求1所述的电池箱体，其中，所述电池箱体还包括第一侧边绝缘条，所述第一侧边绝缘条沿所述底板的所述长度方向延伸、且覆设于所述底板的长边和所述侧板的连接处。
  4. 根据权利要求3所述的电池箱体，其中，所述第一侧边绝缘条的横截面呈L形。
  5. 根据权利要求1所述的电池箱体，其中，所述电池箱体还包括第二侧边绝缘条，所述第二侧边绝缘条沿所述底板的所述宽度方向延伸、且覆设于所述底板上与所述侧板相连接的宽边。
  6. 一种电池箱，其中，包括：
    如权利要求1至5任一项所述的电池箱体；
    多个电池组合体，设置于所述容纳部，多个所述电池组合体沿所述底板的所述宽度方向并排设置，每个所述电池组合体包括多个沿所述底板的所述长度方向并排设置的单体电池；所述第一绝缘条设置于所述电池组合体的底部与所述底板之间。
  7. 根据权利要求6所述的电池箱，其中，所述电池箱还包括第一绝缘缓冲片，所述第一绝缘缓冲片沿所述底板的所述长度方向延伸，所述第一绝缘缓冲片设置于与所述侧板相邻的所述电池组合体和所述电池箱体之间。
  8. 根据权利要求7所述的电池箱，其中，所述第一绝缘缓冲片包括相交的第一连接段和第二连接段，所述第一连接段粘接于所述电池组合体朝向所述侧板的表面，所述第二连接段位于所述电池组合体的所述底部与所述底板之间。
  9. 根据权利要求6所述的电池箱，其中，所述电池箱还包括第二绝缘缓冲片，所述第二绝缘缓冲片沿所述底板的所述宽度方向延伸，所述电池组合体中位于最外侧的两个所述单体电池的底部和所述电池箱体之间均设置有所述第二绝缘缓冲片。
  10. 根据权利要求9所述的电池箱，其中，所述第二绝缘缓冲片包括容纳凹部，所述单体电池的所述底部的一部分插入所述容纳凹部，以被所述第二绝缘缓冲片包覆，所述第二绝缘缓冲片粘接于所述单体电池。
PCT/CN2018/124620 2018-03-30 2018-12-28 电池箱体以及电池箱 WO2019184497A1 (zh)

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