WO2019196877A1 - 电池包及其电池箱体 - Google Patents

电池包及其电池箱体 Download PDF

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Publication number
WO2019196877A1
WO2019196877A1 PCT/CN2019/082097 CN2019082097W WO2019196877A1 WO 2019196877 A1 WO2019196877 A1 WO 2019196877A1 CN 2019082097 W CN2019082097 W CN 2019082097W WO 2019196877 A1 WO2019196877 A1 WO 2019196877A1
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WO
WIPO (PCT)
Prior art keywords
battery case
cavity
beams
fixed
connecting portion
Prior art date
Application number
PCT/CN2019/082097
Other languages
English (en)
French (fr)
Inventor
邱福生
Original Assignee
爱驰汽车有限公司
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
Priority claimed from CN201820523536.5U external-priority patent/CN207993939U/zh
Priority claimed from CN201810329766.2A external-priority patent/CN108461685A/zh
Application filed by 爱驰汽车有限公司 filed Critical 爱驰汽车有限公司
Publication of WO2019196877A1 publication Critical patent/WO2019196877A1/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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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 invention relates to an electric vehicle, and more particularly to a battery pack and a battery case thereof.
  • a battery case of the prior art adopts a sheet metal and a stamping process, and the cost thereof is low, but the weight thereof is heavy, and the weight of the battery pack and the entire vehicle cannot be achieved.
  • another existing battery case is usually welded by a profile.
  • profile welding of the case of the battery pack For example, welding is prone to generate pores, which are prone to defects and cracks.
  • different welding processes can solve some problems, the welding deformation and residual stress generated by the welding process cannot be completely eliminated, and the welding will cause a decrease in material properties, especially Welding at the corners of the cabinet, the welding strength is poor, and it is easy to fail when it encounters a large load and long-term use.
  • an object of the present invention is to provide a battery pack and a battery case thereof to increase the reliability of the battery case.
  • a battery case comprising:
  • each of the first beams having a first cavity
  • each of the second beams having a second cavity
  • each of the corner connectors having a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion being at a first angle, the first of each of the corner connectors a connecting portion is located in the first cavity of the first beam and is fixedly connected to the first beam, and a second connecting portion of each of the corner connectors is located in the second cavity of the second beam and Fixedly connected to the second beam;
  • each of the fixed beam connectors connecting a fixed beam and a second beam.
  • the shape of the first connecting portion of the corner connector is adapted to the first cavity, and the shape of the second connecting portion of the corner connector is the second The cavity is adapted.
  • the first connecting portion of the corner connector is screwed or riveted to the first beam
  • the second connecting portion of the corner connector is screwed or riveted to the second beam
  • the fixed beam connecting member is screwed or riveted to the fixing beam, and the fixed beam connecting member is screwed or riveted to the second beam.
  • the portion of the fixed beam connecting member that is in contact with the fixed beam and the second beam is coated with a sealing structural adhesive.
  • the bottom plate is riveted to the first beam, the second beam and the fixed beam by a rotary tapping riveting process.
  • the second beam includes a first portion connecting the bottom plate and a second portion remote from the bottom plate, the first portion being provided with a first convex portion facing away from the accommodating cavity, the first The cross section of the convex portion is a triangle having a first portion of the second beam as a base.
  • the first convex portion has a right-angled triangular cross section, and a cross section of the first convex portion facing away from the bottom plate is perpendicular to the bottom edge.
  • the second portion of the second beam is provided with an inlet and outlet, and the second portion of the second beam further has a third cavity communicating with the inlet and outlet to serve as a water channel.
  • the second portion of the second beam is provided with a water pipe joint communicating with the water channel
  • the battery case further includes:
  • a water-cooling plate is disposed on the bottom plate and connected to the fixing beam, and the water-cooling plate is provided with a cold plate joint, and the cold plate joint is connected to the water pipe joint through a pipe.
  • a side of the first beam facing away from the accommodating cavity has a second protrusion, wherein an extension of the second protrusion of the first beam along the first beam The direction has at least one notch to connect the external connector.
  • each of the first beams is a profile having the same cross section
  • each of the second beams is a profile having the same cross section
  • a battery pack comprising:
  • the battery module is located in the accommodating space, and the fixed beam is spaced apart from the adjacent battery module.
  • the corner connector of the battery box is located in the cavity, does not occupy space, and has high connection strength, providing force bearing for the corner of the box body, reducing welding force and effectively avoiding welding failure;
  • the profile structure of the battery box cross member can effectively protect the connector and the water pipe inlet and outlet, and provide high anti-extrusion performance
  • Fig. 1 is a perspective view of a battery case according to an embodiment of the present invention.
  • FIG. 2 is a schematic view of a corner connector of an embodiment of the present invention.
  • FIG 3 is a schematic view showing the connection of a first beam and a second beam in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic view showing the connection of a second beam and a fixed beam according to an embodiment of the present invention.
  • Figure 5 is a schematic illustration of a cross section of a second beam of an embodiment of the present invention.
  • Fig. 6 is a bottom view of a battery case according to an embodiment of the present invention.
  • Fig. 7 is a schematic view showing a first beam of a battery case according to an embodiment of the present invention.
  • Fig. 8 is a perspective view of a battery pack according to an embodiment of the present invention.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments can be embodied in many forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete,
  • the same reference numerals in the drawings denote the same or similar structures, and a repetitive description thereof will be omitted.
  • Fig. 1 is a perspective view of a battery case according to an embodiment of the present invention.
  • 2 is a schematic view of a corner connector of an embodiment of the present invention.
  • 3 is a schematic view showing the connection of a first beam and a second beam in accordance with an embodiment of the present invention.
  • 4 is a schematic view showing the connection of a second beam and a fixed beam according to an embodiment of the present invention.
  • Figure 5 is a schematic illustration of a cross section of a second beam of an embodiment of the present invention.
  • Fig. 6 is a bottom view of a battery case according to an embodiment of the present invention.
  • Fig. 7 is a schematic view showing a first beam of a battery case according to an embodiment of the present invention.
  • the battery case 100 includes a bottom plate 190, a plurality of first beams 110, 120, a plurality of second beams 130, 140, a plurality of corner connectors 180, a plurality of fixed beams 150, and a plurality of fixed beam connectors 160.
  • the bottom plate 190 is preferably rectangular in shape, and the present invention is not limited thereto, and the bottom plate 190 may be disposed in other shapes according to the mounting controls.
  • Embodiments of the invention show two first beams 110, 120 that are opposite and parallel.
  • the first beams 110, 120 are fixed to the bottom plate 190.
  • the first beams 110, 120 may be fixed to the bottom plate 190 by screwing.
  • the first beam 110, 120 can be secured to the base plate 190 using a rotary tapping riveting FDS process.
  • the rotary tapping riveting FDS process does not require a bottom hole, and has high strength and can be directly installed, which can reduce the processing procedure of the battery case 100, reduce the cost, and improve the efficiency.
  • the first beam 110, 120 is further connected to the bottom plate 190 through the sealing structure glue to form a complete box structure with high sealing property and high strength, thereby avoiding damage caused by welding to the material and weakening of the weld strength. And other defects caused by welding.
  • the first beam 110, 120 is a profile structure having a first cavity (similar to the second cavity 145 of the second beam 140 shown in Figure 5). Specifically, in the embodiment, the side of the first beam 110, 120 facing away from the accommodating cavity has a second convex portion 111.
  • the second protrusion 111 of one of the two first beams 110, 120 has at least one notch (shown as 112, 113) along the direction of extension of the first beam 110 to connect the external connectors.
  • the space of the first beam 110 in which the notch is provided in the accommodating cavity of the battery case 100 is used to mount a BMS (BATTERY MANAGEMENT SYSTEM) and a high-voltage management system.
  • Notches 112 and notches 113 are used to mount external high and low voltage connectors 201 and 203 (shown in Figure 7).
  • the second protrusion 111 disposed on the first beam 110 has a certain protection effect on the external connector, and the first beam 110, 120 is provided with the second protrusion 111 to improve the anti-extrusion performance of the box and avoid other extremes such as collision. The situation caused damage to the battery.
  • the second convex portion 111 and the first beam 110, 120 form a hollow cavity to achieve buffering when the battery case 100 is pressed.
  • the two first beams 110 and 120 are profiles having the same cross-sectional structure, which can effectively reduce the number of molds and reduce the design cost.
  • Embodiments of the invention show two second beams 130, 140 that are opposite and parallel.
  • the second beam 130, 140 is fixed on the bottom plate 190 and connected to the first beam 110, 120 to form a rectangular receiving cavity.
  • the second beams 130, 140 may be fixed to the bottom plate 190 by screwing.
  • the second beam 130, 140 is secured to the base plate 190 by a rotary tapping riveting FDS process.
  • the second beam 130, 140 can also be auxiliaryly connected to the bottom plate 190 through the sealing structure glue to form a complete box structure with high sealing and high strength.
  • the second beam 130, 140 is a profile structure having a second cavity (taking the second beam 140 as an example, the second cavity of which is for example 145).
  • the second beam 140 includes a first portion 141 that connects the bottom plate 190 and a second portion 142 that is remote from the bottom plate 190.
  • the first portion 141 is provided with a first convex portion 143 that faces away from the accommodating cavity.
  • the cross section of the first convex portion 143 is a triangle with the first portion 141 of the second beam 140 as a base.
  • the first convex portion 143 has a right-angled cross section, and a cross section of the first convex portion 143 away from the bottom plate 190 is perpendicular to the bottom edge.
  • the structure of the second beam 140 (the second beam 130 has the same cross-sectional structure as the second beam 140) can satisfy the requirement of the upward movement of the battery pack installation position, and can effectively utilize the strength of the overall frame structure of the cabinet.
  • the cross-sectional structure of the second beam 130, 140 can improve the supporting strength and the fixing strength, and at the same time, can improve the anti-extrusion performance and protect the internal structure.
  • the two second beams 130 and 140 are profiles having the same cross-sectional structure, which can effectively reduce the number of molds and reduce the design cost.
  • the two second beams 130, 140 and the two first beams 110, 120 may have the same cross-sectional structure except for the first protrusions 143 and the second protrusions 111 provided.
  • Each of the corner connectors 180 has a first connecting portion 181 and a second connecting portion 182.
  • the first connecting portion 181 and the second connecting portion 182 are at a first angle.
  • the first connecting portion 181 of each of the corner connectors 180 is located in the first cavity of the first beam 110 (or the first beam 120) and with the first beam 110 (or the first beam 120) Fixed connection.
  • a second connecting portion 182 of each of the corner connectors 180 is located in the second cavity of the second beam 130 (or the second beam 140) and is fixed to the second beam 130 (or the second beam 140) connection.
  • the first beam 110 (or the first beam 120) is aligned with the second beam 130 (or the second beam 140)
  • the first beam 110 (or the first beam 120) is A cavity is in positional communication with the second cavity of the second beam 130 (or the second beam 140) such that the first connecting portion 181 of the angle connector 180 is located in the first beam 110 (or the first beam 120) In the first cavity, the second connecting portion 182 of the corner connector 180 is located in the second cavity of the second beam 130 (or the second beam 140).
  • the shape of the first connecting portion 181 of the corner connector 180 is adapted to the first cavity
  • the shape of the second connecting portion 182 of the corner connector 180 is adapted to the second cavity.
  • the first connecting portion 181 of the corner connector 180 is fixedly connected to the first beam 110 (or the first beam 120) by a bolt 101.
  • the first connecting portion 181 of the corner connector 180 and the first beam 110, 120 are provided with bolt fixing holes.
  • the second connecting portion 182 of the corner connector 180 is fixedly connected to the second beam 130 (or the second beam 140) by bolts 101.
  • the second connecting portion 182 and the second beam 130 and 140 of the corner connector 180 are provided with bolt fixing holes.
  • the bolt fixing hole has a fixed connection and positioning function, and the bolt hole is self-threaded for easy installation.
  • the corner connector 180 is riveted to the first beam 110 (or the first beam 120) and the second beam 130 (or the second beam 140).
  • the portions of each of the first beams 110, 120 and the second beams 130, 140 are connected by two corner connectors 180.
  • the corner connector 180 does not occupy the space of the battery case 100, on the other hand, the high strength of the corner connection can be ensured, and the load of the corner of the box under various working conditions can be carried by the angle connector. Effectively reduce the stress on the weld at the corner and avoid the failure of the corner weld.
  • the first angle is 90 degrees. In other embodiments of the parallelogram, there may be two different first angles, and the invention is not limited thereto.
  • a fixing beam 150 is fixed on the bottom plate 190 and located in the accommodating cavity.
  • a plurality of fixing beams 150 may be fixed to the bottom plate 190 by screwing.
  • a plurality of fixed beams 150 are secured to the base plate 190 using a rotary tapping riveting FDS process.
  • the plurality of fixing beams 150 can also be auxiliaryly connected to the bottom plate 190 through the sealing structure glue to form a complete box structure having high sealing property and high strength.
  • Two ends of each of the fixing beams 150 are respectively connected to the second beams 130, 140 through the fixing beam connecting members 160.
  • Each of the fixed beam connectors 160 connects the fixed beam 150 and the second beam 130, 140.
  • the fixed beam connector 160 and the second beam 130, 140 can be connected by high-strength rivets 102 to ensure reliable connection.
  • the fixed beam connecting member 160 and the fixed beam 150 are connected by bolts 103, wherein the fixed beam connecting member 160 is self-threaded for convenient installation and is advantageous for weight reduction.
  • the bolt 103 is made of high-strength bolts, and the bolt holes are tightly matched with the bolts to ensure the connection strength is reliable and the strength of the bolt itself can be used with maximum strength.
  • the fixed beam connector 160 of the present invention can also be screwed to the second beam 130, 140.
  • the fixed beam connector 160 can also be riveted to the fixing beam 150, which is not limited thereto.
  • the above various components are riveted to ensure reliable connection.
  • the fixed beam connecting member 160 is coated with a sealing structural adhesive (for example, the fixed beam connecting member 160 and the second beam 130, 140), and the portion of the fixed beam connecting member 160 connected to the fixing beam 150 is coated with a sealing structural adhesive)
  • a sealing structural adhesive for example, the fixed beam connecting member 160 and the second beam 130, 140
  • the portion of the fixed beam connecting member 160 connected to the fixing beam 150 is coated with a sealing structural adhesive
  • the battery case 100 further includes a water-cooled plate 170.
  • a water cooling plate 170 is located on the bottom plate 190 and connected to the fixing beam 150. Specifically, the water-cooled plate 170 may be mounted on the fixed beam 150 by bolts.
  • a cold plate joint 171 is disposed on the water-cooling plate 170.
  • the second portion 142 of the second beam (which is exemplified by the second beam 140) is provided with an inlet and outlet 149.
  • the second portion 142 of the second beam (exemplified by the second beam 140) also has a third cavity 144 that communicates with the inlet and outlet 149 as a water channel.
  • the second portion of the second beam (taking the second beam 130 as an example) is provided with a water pipe joint 139 that communicates with the water channel.
  • the inlet and outlet ports and the water pipe joint are provided on both sides of the second portion of the second beam 130, 140.
  • the water cooling system is split by the water passages of the second beams 130, 140.
  • the upper ends of the second beams 130 and 140 are subjected to small loads under various working conditions, which can avoid the risk of the waterway transition being loaded.
  • the water-cooled pipe in the water-cooling plate 170 inside the tank is connected by a rubber pipe through a cold plate joint 171 and a water pipe joint 139.
  • the water-cooling plate 170 is affixed with thermal insulation cotton on one side of the bottom plate 190, and the thermal insulation pad is bonded to the side facing the bottom plate 190 to form a complete thermal management system. Further, the water inlet and outlet 149 is installed outside the cabinet, which can save internal space and effectively utilize the space available around the cabinet. The strength of the corner of the battery case 100 is large, and the inlet and outlet 149 is disposed near the corner to effectively protect the inlet and outlet 149.
  • the cooling water flows into the second beam 140 from the inlet and outlet 149 as the water inlet, forms a parallel waterway in the water channel 144 of the second beam 140, and is connected to the water cooling through the water pipe joint and the water-cooling plate 170.
  • the inside of the plate 170 flows out through the internal circuit of the water-cooling plate 170, forms heat exchange with the battery module at the water-cooling plate 170, and is connected to the water pipe joint 139 through the other side of the cold plate joint 171, and flows out into the water channel of the second beam 130.
  • the fixed beam 150 may be similar to the water-cooled plate, and through the parallel water path, the internal cavity of the profile is used as a water channel, flowing from one end to the other end for absorbing heat accumulated in the air inside the battery pack.
  • the various components of the battery case 100 may be extruded aluminum materials to achieve weight reduction of the battery case, and the present invention is not limited thereto.
  • the present invention also provides a battery pack 300.
  • the battery pack 300 includes a battery case 100 and a battery module 310 as shown in FIG.
  • the battery module 310 is located in the accommodating space, and the fixing beam 150 is spaced apart from the adjacent battery module 310.
  • the corner connector of the battery box is located in the cavity, does not occupy space, and has high connection strength, providing force bearing for the corner of the box body, reducing welding force and effectively avoiding welding failure;
  • the sealing structure adhesive structure in the fixed beam connection provides high sealing performance for the box body and effectively improves the joint strength
  • the profile structure of the battery box cross member can effectively protect the connector and the water pipe inlet and outlet, and provide high anti-extrusion performance

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本发明提供了一种电池包及电池箱体。本发明提供的电池箱体，包括：底板；多个第一横梁和多个第二横梁，固定在底板上以形成容置腔，各第一横梁具有第一空腔，各第二横梁具有第二空腔；多个角连接件，每个角连接件具有第一连接部和第二连接部，第一连接部和第二连接部成第一角度，每个角连接件的第一连接部位于一第一横梁的第一空腔内并与第一横梁固定连接，每个角连接件的第二连接部位于第二横梁的第二空腔内并与第二横梁固定连接；多个固定梁，固定在底板上，位于容置腔中，每个固定梁的两端分别连接一第二横梁；以及多个固定梁连接件，每个固定梁连接件连接一固定梁及一第二横梁。本发明提供的电池包及其电池箱体增加电池箱体可靠性。

Description

电池包及其电池箱体 技术领域
本发明涉及电动汽车，具体地说，涉及电池包及其电池箱体。
背景技术
现有的一种电池箱体采用钣金和冲压工艺，其成本较低但其重量偏重，无法实现电池包及整车的轻量化。为了解决轻量化的问题，现有的另一种电池箱体通常采用型材拼焊。然而，电池包的箱体采用型材拼焊会存在许多缺点。例如，焊接容易产生气孔，容易产生缺陷和裂纹等，虽然采用不同的焊接工艺可以解决一些问题，但焊接过程产生的焊接变形和残余应力无法完全消除，同时焊接会造成材料性能的下降，特别是箱体周边角落的焊接，焊接强度差，在遇到较大载荷以及长期使用时很容易失效。此外，对于性能差别跨度较大的不同材料，其焊接难度大。由此可见，现有技术的电池箱体可靠性低。
发明内容
针对现有技术中的问题，本发明的目的在于提供一种电池包及其电池箱体，以增加电池箱体可靠性。
根据本发明的一个方面，提供一种电池箱体，包括：
底板；
多个第一横梁和多个第二横梁，固定在所述底板上以形成容置腔，各所 述第一横梁具有第一空腔，各所述第二横梁具有第二空腔；
多个角连接件，每个所述角连接件具有第一连接部和第二连接部，所述第一连接部和第二连接部成第一角度，每个所述角连接件的第一连接部位于一所述第一横梁的第一空腔内并与所述第一横梁固定连接，每个所述角连接件的第二连接部位于所述第二横梁的第二空腔内并与所述第二横梁固定连接；
多个固定梁，固定在所述底板上，位于所述容置腔中，每个所述固定梁的两端分别连接一所述第二横梁；以及
多个固定梁连接件，每个所述固定梁连接件连接一所述固定梁及一所述第二横梁。
在本发明的一个实施例中，所述角连接件的所述第一连接部的形状与第一空腔相适配，所述角连接件的所述第二连接部的形状与第二空腔相适配。
在本发明的一个实施例中，所述角连接件的第一连接部与所述第一横梁螺接或者铆接，所述角连接件的第二连接部与所述第二横梁螺接或者铆接。
在本发明的一个实施例中，所述固定梁连接件与所述固定梁螺接或者铆接，所述固定梁连接件与所述第二横梁螺接或者铆接。
在本发明的一个实施例中，所述固定梁连接件与所述固定梁、所述第二横梁接触的部分涂布有密封结构胶。
在本发明的一个实施例中，所述底板采用旋转攻丝铆接工艺与所述第一横梁、所述第二横梁及所述固定梁铆接。
在本发明的一个实施例中，所述第二横梁包括连接底板的第一部和远离底板的第二部，所述第一部设置有背离容置腔的第一凸部，所述第一凸部的 截面为以所述第二横梁的第一部为底边的三角形。
在本发明的一个实施例中，所述第一凸部的截面为直角三角形，所述第一凸部的截面背离所述底板的边垂直于所述底边。
在本发明的一个实施例中，所述第二横梁的第二部设置有进出水口，所述第二横梁的第二部还具有连通所述进出水口的第三空腔以作为水道。
在本发明的一个实施例中，所述第二横梁的第二部设置有与所述水道连通的水管接头，
所述电池箱体还包括：
水冷板，位于所述底板上与所述固定梁连接，所述水冷板上设置有冷板接头，所述冷板接头与所述水管接头通过管道连接。
在本发明的一个实施例中，所述第一横梁背离所述容置腔的一侧具有第二凸部，其中，一所述第一横梁的第二凸部沿所述第一横梁的延伸方向具有至少一个缺口以连接外部插接件。
在本发明的一个实施例中，各所述第一横梁为具有相同截面的型材，各所述第二横梁为具有相同截面的型材。
根据本发明的另一个方面，提供一种电池包，包括：
如上所述的电池箱体；以及
电池模组，位于所述容置空间内，所述固定梁间隔相邻电池模组。
本发明的提供的电池包及其电池箱体具有如下优势：
1)电池箱体角部连接件位于空腔中，不占空间，连接强度高，为箱体角部提供受力承载，降低焊接受力，有效避免焊接失效；
2)电池箱体的各个横梁及固定梁螺接底板，可以避免焊接造成箱体变形和对材料本体造成损伤，以及焊接工艺可能产生的其他缺陷；节省成本，提高效率；
3)固定梁连接中的密封结构胶为箱体提供高密封性能，同时有效提高连接强度；
4)电池箱体横梁的型材结构，可以有效保护接插件和水管进出口，提供高的抗挤压性能；
5)水道设置在横梁上端内部非受载区，节省箱体内部空间，避免水道受载造成泄露的风险。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显；
图1是本发明的一实施例的电池箱体的立体图。
图2是本发明的一实施例的角连接件的示意图。
图3是本发明的一实施例的第一横梁和第二横梁连接的示意图。
图4是本发明的一实施例的第二横梁和固定梁连接的示意图。
图5是本发明的一实施例的第二横梁的截面的示意图。
图6是本发明的一实施例的电池箱体的仰视图。
图7是本发明的一实施例的电池箱体的一第一横梁的示意图。
图8是本发明的一实施例的电池包的立体图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式。相反，提供这些实施方式使得本发明将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。在图中相同的附图标记表示相同或类似的结构，因而将省略对它们的重复描述。
首先结合图1至图7说明本发明提供的电池箱体。图1是本发明的一实施例的电池箱体的立体图。图2是本发明的一实施例的角连接件的示意图。图3是本发明的一实施例的第一横梁和第二横梁连接的示意图。图4是本发明的一实施例的第二横梁和固定梁连接的示意图。图5是本发明的一实施例的第二横梁的截面的示意图。图6是本发明的一实施例的电池箱体的仰视图。图7是本发明的一实施例的电池箱体的一第一横梁的示意图。
电池箱体100包括底板190、多个第一横梁110、120、多个第二横梁130、140、多个角连接件180、多个固定梁150及多个固定梁连接件160
底板190优选地为矩形形状，本发明并非以此为限，底板190还可以根据安装控件设置为其他形状。
本发明的实施例示出两个第一横梁110、120，两个第一横梁110、120相对且平行。第一横梁110、120固定在底板190上。可选地，第一横梁110、120可以通过螺接的方式固定在底板190。在另一个具体实施例中，第一横梁110、120可以采用旋转攻丝铆接FDS工艺固定在底板190上。旋转攻丝铆接FDS工艺无需开底孔，强度高，可以直接安装，可以减少电池箱体100加工程序，减低成本，提高效率。进一步地，第一横梁110、120还通过密封结构 胶与底板190辅助连接，形成完整的具有高密封性和高强度的箱体结构，避免焊接对材料造成的损伤，焊缝强度偏弱的缺点和焊接造成的其他缺陷。第一横梁110、120为型材结构，具有第一空腔(与图5所示的第二横梁140的第二空腔145类似)。具体而言，在本实施例中，第一横梁110、120背离容置腔的一侧具有第二凸部111。两个第一横梁110、120中的一个第一横梁110的第二凸部111沿所述第一横梁110的延伸方向具有至少一个缺口(如112、113所示)以连接外部插接件。具体而言，电池箱体100的容置腔中靠近设置缺口的第一横梁110的空间用于安装BMS(电池管理系统，BATTERY MANAGEMENT SYSTEM)和高压管理系统。缺口112和缺口113用于安装外部高低压接插件201及203(如图7所示)。第一横梁110设置的第二凸部111对外部接插件具有一定的保护作用，同时第一横梁110、120都设置第二凸部111可以提高箱体的抗挤压性能，避免碰撞等其他极端情况对电池造成破坏。具体而言，第二凸部111与第一横梁110、120形成中空腔体，以实现电池箱体100被挤压时的缓冲。可选地，两个第一横梁110、120为具有相同截面结构的型材，可以有效的减少模具数量，降低设计成本。
本发明的实施例示出两个第二横梁130、140，两个第二横梁130、140相对且平行。第二横梁130、140固定在底板190上，并与第一横梁110、120连接形成矩形容置腔。可选地，第二横梁130、140可以通过螺接的方式固定在底板190。在另一个具体实施例中，第二横梁130、140采用旋转攻丝铆接FDS工艺固定在底板190上。进一步地，第二横梁130、140还可以通过密封结构胶与底板190辅助连接，形成完整的具有高密封性和高强度的箱体结构。第二横梁130、140为型材结构，具有第二空腔(以第二横梁140为例， 其第二空腔例如为145)。具体而言，在本实施例中，以第二横梁140为例描述第二横梁的结构。第二横梁140包括连接底板190的第一部141和远离底板190的第二部142。所述第一部141设置有背离容置腔的第一凸部143。所述第一凸部143的截面为以所述第二横梁140的第一部141为底边的三角形。在本发明的一个实施例中，所述第一凸部143的截面为直角三角形，所述第一凸部143的截面背离所述底板190的边垂直于所述底边。第二横梁140(第二横梁130具有与第二横梁140相同的截面结构)的截面形式的结构可以满足电池包安装位置上移的要求，同时能有效的利用箱体整体框架结构的强度。具体而言，第二横梁130、140上述截面结构能够提高支撑强度和固定强度，同时还能提高抗挤压性能，对内部结构起到保护作用。可选地，两个第二横梁130、140为具有相同截面结构的型材，可以有效的减少模具数量，降低设计成本。进一步地，两个第二横梁130、140和两个第一横梁110、120除设置的第一凸部143和第二凸部111外可以具有相同的截面结构。
各角连接件180具有第一连接部181和第二连接部182。所述第一连接部181和第二连接部182成第一角度。每个所述角连接件180的第一连接部181位于一所述第一横梁110(或第一横梁120)的第一空腔内并与所述第一横梁110(或第一横梁120)固定连接。每个所述角连接件180的第二连接部182位于所述第二横梁130(或第二横梁140)的第二空腔内并与所述第二横梁130(或第二横梁140)固定连接。具体而言，当所述第一横梁110(或第一横梁120)与所述第二横梁130(或第二横梁140)连接对位时，第一横梁110(或第一横梁120)的第一空腔与第二横梁130(或第二横梁140)的第二空腔对位连通，使得角连接件180的第一连接部181位于一所述第一横梁 110(或第一横梁120)的第一空腔内，角连接件180的第二连接部182位于一所述第二横梁130(或第二横梁140)的第二空腔内。角连接件180的所述第一连接部181的形状与第一空腔相适配，所述角连接件180的所述第二连接部182的形状与第二空腔相适配。角连接件180的所述第一连接部181与所述第一横梁110(或第一横梁120)通过螺栓101连接固定。角连接件180的所述第一连接部181及所述第一横梁110、120上都设置有螺栓固定孔。角连接件180的所述第二连接部182与所述第二横梁130(或第二横梁140)通过螺栓101连接固定。角连接件180的所述第二连接部182及所述第二横梁130、140上都设置有螺栓固定孔。螺栓固定孔具有固定连接和定位作用，螺栓孔自带螺纹，便于安装。在又一些实施例中，角连接件180和第一横梁110(或第一横梁120)，第二横梁130(或第二横梁140)铆接。在本实施例中，每个第一横梁110、120和第二横梁130、140连接的部分利用两个角连接件180进行连接。通过上述连接方式，一方面，角连接件180不占用电池箱体100空间，另一方面，可以保证角落连接高强度，通过角连接件承载箱体在各个工况下角落所受的载荷，可以有效的减小角落处焊接的受力，避免角落焊接处失效。在本实施例中，由于两个第一横梁110、120及两个第二横梁130、140连接为矩形形状，因此，所述的第一角度为90度。在其他平行四边形的实施例中，可以具有两个不同的第一角度，本发明并非以此为限。
固定梁150固定在所述底板190上，位于所述容置腔中。可选地，多个固定梁150可以通过螺接的方式固定在底板190。在另一个具体实施例中，多个固定梁150采用旋转攻丝铆接FDS工艺固定在底板190上。进一步地，多个固定梁150还可以通过密封结构胶与底板190辅助连接，形成完整的具 有高密封性和高强度的箱体结构。每个所述固定梁150的两端分别通过固定梁连接件160连接一所述第二横梁130、140。每个所述固定梁连接件160连接一所述固定梁150及一所述第二横梁130、140。具体而言，固定梁连接件160与第二横梁130、140可通过高强度铆钉102连接，保证连接可靠。固定梁连接件160与固定梁150通过螺栓103连接，其中固定梁连接件160自带螺纹，方便安装，同时有利于轻量化。螺栓103选用高强度螺栓，同时使螺栓孔与螺栓紧密配合，保证连接可靠的同时可以最大强度的使用螺栓本身的强度。可以理解，本发明提供的固定梁连接件160还可以与第二横梁130、140螺接，固定梁连接件160还可以与固定梁150铆接，本发明并非以此为限。此外，优选地，上述各个部件之间采用铆接的方式，以保证连接可靠。进一步地，固定梁连接件160在装配时涂有密封结构胶(例如固定梁连接件160与第二横梁130、140，)固定梁连接件160与固定梁150连接的部分涂布密封结构胶)，由此，加强连接的同时可以保证密封性能。通过铆钉102、螺栓103和密封结构胶的连接有效避免焊接对材料的损伤，其连接强度可远远高于焊缝的强度。
在本实施例中，电池箱体100还包括水冷板170。水冷板170位于所述底板190上与所述固定梁150连接。具体而言，水冷板170可以通过螺栓安装在固定梁150上。所述水冷板170上设置有冷板接头171。在本发明的一个实施例中，所述第二横梁(以第二横梁140为例)的第二部142设置有进出水口149。所述第二横梁(以第二横梁140为例)的第二部142还具有连通所述进出水口149的第三空腔144以作为水道。第二横梁(以第二横梁130为例)的第二部设置有与所述水道连通的水管接头139。换言之，在本实施 例中，第二横梁130、140的第二部的两侧皆设有进出水口和水管接头。水冷系统通过第二横梁130、140的水道进行分流。第二横梁130、140上端在各种工况下受载荷小，可以避免水道过渡受载而出现风险。箱体内部水冷板170中的水冷管通过冷板接头171和水管接头139利用橡胶管连接。水冷板170朝向底板190的一侧贴有保温棉，背向底板190的一侧粘接导热垫，形成完整的热管理系统。进一步地，进出水口149安装在箱体外面，可以节省内部空间，同时能有效的利用箱体周边可以利用的空间。电池箱体100的转角处强度大，进出水口149设置在转角附近可以有效的保护进出水口149。
进一步地，在本实施例中，冷却水从作为进水口的进出水口149流进第二横梁140，在第二横梁140的水道144中形成并联水路，通过水管接头和水冷板170接头连接流入水冷板170内部，途径水冷板170内部回路流出，在水冷板170处与电池模组形成热交换，再通过另外一侧冷板接头171和水管接头139相连接，流出到第二横梁130的水道中，通过为出水口的进出水口将热量带出电池箱体。可选地，固定梁150可以与水冷板类似，通过并联水路，利用型材内部型腔作为水道，从一端流向另一端，用于吸收电池包内部电池散到空气中的热量。
进一步地，在本发明上述的各个实施例中，电池箱体100的各个部件可以是挤压铝材料以实现电池箱体轻量化，本发明并非以此为限。
下面参见图8，本发明还提供一种电池包300。电池包300包括如图1所示的电池箱体100以及电池模组310。电池模组310位于所述容置空间内，所述固定梁150间隔相邻电池模组310。
本发明的提供的电池包及其电池箱体具有如下优势：
1)电池箱体角部连接件位于空腔中，不占空间，连接强度高，为箱体角部提供受力承载，降低焊接受力，有效避免焊接失效；
2)电池箱体的各个横梁及固定梁螺接底板，可以避免焊接造成箱体变形和对材料本体造成损伤，以及焊接工艺可能产生的其他缺陷；节省成本，提高效率；
3)固定梁连接中的密封结构胶结构为箱体提供高密封性能，同时有效提高连接强度；
4)电池箱体横梁的型材结构，可以有效保护接插件和水管进出口，提供高的抗挤压性能；
5)水道设置在横梁上端内部非受载区，节省箱体内部空间，避免水道受载造成泄露的风险。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (13)

  1. 一种电池箱体，其特征在于，包括：
    底板；
    多个第一横梁和多个第二横梁，固定在所述底板上以形成容置腔，各所述第一横梁具有第一空腔，各所述第二横梁具有第二空腔；
    多个角连接件，每个所述角连接件具有第一连接部和第二连接部，所述第一连接部和第二连接部成第一角度，每个所述角连接件的第一连接部位于一所述第一横梁的第一空腔内并与所述第一横梁固定连接，每个所述角连接件的第二连接部位于所述第二横梁的第二空腔内并与所述第二横梁固定连接；
    多个固定梁，固定在所述底板上，位于所述容置腔中，每个所述固定梁的两端分别连接一所述第二横梁；以及
    多个固定梁连接件，每个所述固定梁连接件连接一所述固定梁及一所述第二横梁。
  2. 如权利要求1所述的电池箱体，其特征在于，所述角连接件的所述第一连接部的形状与第一空腔相适配，所述角连接件的所述第二连接部的形状与第二空腔相适配。
  3. 如权利要求1所述的电池箱体，其特征在于，所述角连接件的第一连接部与所述第一横梁螺接或者铆接，所述角连接件的第二连接部与所述第二横梁螺接或者铆接。
  4. 如权利要求1所述的电池箱体，其特征在于，所述固定梁连接件与所 述固定梁螺接或者铆接，所述固定梁连接件与所述第二横梁螺接或者铆接。
  5. 如权利要求4所述的电池箱体，其特征在于，所述固定梁连接件与所述固定梁、所述第二横梁接触的部分涂布有密封结构胶。
  6. 如权利要求1所述的电池箱体，其特征在于，所述底板采用旋转攻丝铆接工艺与所述第一横梁、所述第二横梁及所述固定梁铆接。
  7. 如权利要求1所述的电池箱体，其特征在于，所述第二横梁包括连接底板的第一部和远离底板的第二部，所述第一部设置有背离容置腔的第一凸部，所述第一凸部的截面为以所述第二横梁的第一部为底边的三角形。
  8. 如权利要求7所述的电池箱体，其特征在于，所述第一凸部的截面为直角三角形，所述第一凸部的截面背离所述底板的边垂直于所述底边。
  9. 如权利要求7所述的电池箱体，其特征在于，所述第二横梁的第二部设置有进出水口，所述第二横梁的第二部还具有连通所述进出水口的第三空腔以作为水道。
  10. 如权利要求9所述的电池箱体，其特征在于，所述第二横梁的第二部设置有与所述水道连通的水管接头，
    所述电池箱体还包括：
    水冷板，位于所述底板上与所述固定梁连接，所述水冷板上设置有冷板接头，所述冷板接头与所述水管接头通过管道连接。
  11. 如权利要求1所述的电池箱体，其特征在于，所述第一横梁背离所述容置腔的一侧具有第二凸部，其中，一所述第一横梁的第二凸部沿所述第一横梁的延伸方向具有至少一个缺口以连接外部插接件。
  12. 如权利要求1所述的电池箱体，其特征在于，各所述第一横梁为具 有相同截面的型材，各所述第二横梁为具有相同截面的型材。
  13. 一种电池包，其特征在于，包括：
    如权利要求1至12任一项所述的电池箱体；以及
    电池模组，位于所述容置空间内，所述固定梁间隔相邻电池模组。
PCT/CN2019/082097 2018-04-13 2019-04-10 电池包及其电池箱体 WO2019196877A1 (zh)

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CN113314790A (zh) * 2021-05-26 2021-08-27 荣盛盟固利新能源科技有限公司 方舱式电池包
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CN114247870A (zh) * 2021-12-31 2022-03-29 江苏文灿压铸有限公司 一种新能源汽车电池盒一体成型低压铸造方法及组装方法
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CN114725597A (zh) * 2022-03-25 2022-07-08 江苏天钧精密技术有限公司 一种榫卯结构高强度且轻量化电池箱体及其制造方法
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CN115513583A (zh) * 2019-11-19 2022-12-23 宁德时代新能源科技股份有限公司 电池包和车辆
CN111261819A (zh) * 2020-03-16 2020-06-09 纽维科精密制造江苏有限公司 水冷箱体结构及其生产工艺
CN113314790A (zh) * 2021-05-26 2021-08-27 荣盛盟固利新能源科技有限公司 方舱式电池包
CN113314790B (zh) * 2021-05-26 2023-01-31 荣盛盟固利新能源科技有限公司 方舱式电池包
CN114069141A (zh) * 2021-11-09 2022-02-18 宁波信泰机械有限公司 一种电动汽车及混合动力汽车用压铸铝合金电池箱框架结构
CN114247870A (zh) * 2021-12-31 2022-03-29 江苏文灿压铸有限公司 一种新能源汽车电池盒一体成型低压铸造方法及组装方法
CN114709540B (zh) * 2022-03-14 2024-03-12 江苏天钧精密技术有限公司 可快速安装的电池箱体吊装圆套制造方法及吊装圆套本体
CN114709540A (zh) * 2022-03-14 2022-07-05 江苏天钧精密技术有限公司 可快速安装的电池箱体吊装圆套制造方法及吊装圆套本体
CN114725597A (zh) * 2022-03-25 2022-07-08 江苏天钧精密技术有限公司 一种榫卯结构高强度且轻量化电池箱体及其制造方法
CN114725597B (zh) * 2022-03-25 2024-03-12 江苏天钧精密技术有限公司 一种榫卯结构高强度且轻量化电池箱体及其制造方法
CN114843545A (zh) * 2022-04-26 2022-08-02 大洋电机燃料电池科技(中山)有限公司 一种燃料电池箱体结构及制造方法
CN114843545B (zh) * 2022-04-26 2024-06-07 大洋电机燃料电池科技(中山)有限公司 一种燃料电池箱体结构及制造方法
CN116544590B (zh) * 2023-05-19 2024-01-26 天达科技股份有限公司 超高强度新能源汽车电池托盘及其生产工艺
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