WO2023284518A1 - 电池模组、电池包和电动车 - Google Patents

电池模组、电池包和电动车 Download PDF

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Publication number
WO2023284518A1
WO2023284518A1 PCT/CN2022/100922 CN2022100922W WO2023284518A1 WO 2023284518 A1 WO2023284518 A1 WO 2023284518A1 CN 2022100922 W CN2022100922 W CN 2022100922W WO 2023284518 A1 WO2023284518 A1 WO 2023284518A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery module
module according
plate
battery pack
Prior art date
Application number
PCT/CN2022/100922
Other languages
English (en)
French (fr)
Inventor
曹辉
曹楷
陈英旗
刘微
陈丹丹
杨晓枫
侯敏
喻先锋
刘婵
宇招宇
Original Assignee
瑞浦兰钧能源股份有限公司
上海瑞浦青创新能源有限公司
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 CN202121612263.XU external-priority patent/CN215731960U/zh
Priority claimed from CN202121690653.9U external-priority patent/CN215731970U/zh
Priority claimed from CN202111480849.XA external-priority patent/CN114069153A/zh
Application filed by 瑞浦兰钧能源股份有限公司, 上海瑞浦青创新能源有限公司 filed Critical 瑞浦兰钧能源股份有限公司
Priority to KR1020247004871A priority Critical patent/KR20240033034A/ko
Priority to EP22822253.5A priority patent/EP4156395A4/en
Priority to JP2023503222A priority patent/JP2023539992A/ja
Publication of WO2023284518A1 publication Critical patent/WO2023284518A1/zh
Priority to US18/105,703 priority patent/US20230187760A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/249—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
    • H01M50/289—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
    • H01M50/20—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
    • H01M50/291—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 characterised by their shape
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • 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 battery field, and in particular, relates to a battery module, a battery pack including the battery module, and an electric vehicle including the battery pack.
  • Some battery packs include a hollow box and battery modules disposed inside the box.
  • battery packs spliced with aluminum alloy profiles are usually used, which increases the manufacturing cost of the battery pack.
  • the battery pack In order to increase the energy density, the battery pack usually uses as much size as possible for the cell arrangement, leaving less space for structural parts.
  • it In order to fix the battery module, it is usually pasted, for example, the battery module is pasted on the inner wall of the box by double-sided adhesive tape.
  • the viscosity of the tape will decrease with the increase of use time, causing the battery module to loosen, which will have a great impact on the use of the battery pack; moreover, the performance of the glue itself is not highly monitorable during the production process, and it is prone to Batch products are defective; in addition, the battery module cannot be disassembled by pasting, which is inconvenient to use.
  • the technical problem to be solved in this application is to provide a battery module, a battery pack and an electric vehicle including multiple detachable reinforcement points.
  • the present application proposes a battery module, which includes a plurality of battery cells, and is characterized in that it includes a fixing assembly, and the fixing assembly includes a plurality of posts, and the posts are sandwiched between a plurality of said posts. between batteries.
  • the edge of the battery core is provided with a rounded structure, and the post abuts against the rounded structure.
  • the post includes an inner cavity and an outer abutment layer, the inner cavity is disposed in the outer abutment layer; the outer abutment layer is abutted against the electric core catch.
  • the outer contact layer is an insulating layer.
  • the post includes a body, the body includes an inner cavity and an outer abutting layer, the inner cavity passes through the body, and the battery module further includes fasteners, The fastener is inserted in the inner cavity, and the fastener is used to fix the post.
  • a support platform for accommodating the head of the fastener is provided on the top of the body, and the width of the support platform is greater than the diameter of the body.
  • a plurality of posts are connected to form a fixed group.
  • multiple fixed-group connections are set.
  • the fixing group is provided with a plurality of connecting pieces, and the fixing groups are connected through the connecting pieces.
  • each of the cell groups includes a plurality of cells, each of the cells has a width extending along the first direction, and the plurality of cells
  • the battery cells are arranged along the first direction to form the battery core group, the spacer plate is arranged between the adjacent battery core groups, the spacer plate extends along the first direction, and the plurality of posts are uniform
  • the spacers are disposed on the spacer plate, the distance between the adjacent posts corresponds to the width of the electric core, and the electric core is fixedly arranged between the adjacent posts.
  • the partition plate is provided with a flanged plate and a deformation area, the flanged plate and the post are arranged perpendicular to each other, and the flanged plate protrudes from the partition plate.
  • the flange plate is provided with a mounting hole, the mounting hole is set corresponding to the inner cavity; the deformation zone is set at the end of the partition plate.
  • an end plate is further included, the end plate is arranged at both ends of the cell pack, and the end plate is unidirectionally locked with the partition plate through an interlocking mechanism.
  • the partition plate is perpendicular or parallel to the end plate.
  • a limit slot is provided on the end plate, and a relief hole is provided on one side of the limit groove, and the deformation zone is fixed to the limit groove through the relief hole.
  • a limiting block and a limiting groove are arranged inside the limiting groove, and the limiting block and the limiting groove are arranged on both sides of the limiting groove corresponding to each other , the limiting block and the limiting groove are arranged at intervals along a second direction, and the second direction is the vertical direction of the end plate.
  • the deformation zone includes slots and elastic pieces, the slots are evenly spaced at the end of the partition plate along the second direction, and the slots are close to the end of the end plate.
  • the inner side of one end is provided with a first groove wall, one end of the elastic piece is fixedly arranged on the first groove wall, and the other end of the elastic piece protrudes from the body of the partition plate.
  • the deformation zone compresses the elastic piece through the relief hole and moves into the limiting groove, and the deformation zone self-locks in the limiting groove through the springback of the elastic piece.
  • the slot is fixed with the end plate.
  • the electric core includes a casing and an inner winding core, the inner winding core is arranged in the casing, the inner winding core is arranged in a winding structure, and the casing includes a circular Angle structure.
  • the shells of the adjacent battery cells are in contact with each other through the rounded corner structure, and the inserting post is arranged in contact with the rounded corner structure of the adjacent said shells. in the gap formed.
  • the partition board is in close contact with the outer wall of the housing, and the height of the partition board along its vertical direction is not less than the height of the housing.
  • a binding band is provided on the periphery of the battery core group, the binding band surrounds the battery core group and the end plate, and the binding band is used to align the battery cells along the first direction.
  • the battery pack is reshaped.
  • the battery cell includes a square shell battery cell.
  • the battery core set is detachably fixed on the surface of the fixed bottom plate; the outer edge of the fixed bottom plate is bent toward the direction close to the battery core set to form An accommodating cavity, the cell set is located in the accommodating cavity; fixing holes are formed on the surface of the fixing bottom plate, and the fasteners also pass through the fixing holes to fix the battery module.
  • connection assembly further includes a connection assembly, the connection assembly is arranged on the side of the battery core group away from the fixed bottom plate, and the connection assembly is used to realize the connection between a plurality of the battery cores. Series and parallel.
  • the present application also proposes a battery pack, which includes the above-mentioned battery module, and is characterized in that it includes a battery pack body, and the plurality of battery cells are arranged in the battery pack body.
  • a limiting post is provided on the inner side wall of the battery pack body, and the limiting post is in contact with the battery cell and the inner side wall of the battery pack body.
  • the present application also proposes an electric vehicle, which is characterized in that it includes the above-mentioned battery pack.
  • the separators, battery packs and electric vehicles used in the battery module provided by this application, under the premise of not affecting the current volume utilization rate, the setting of the post increases the number of fixed points inside the battery module and increases the battery module capacity.
  • Excellent mechanical connection strength which is conducive to improving the grouping rate of the battery module, while increasing the volume, the battery module is fixed without relying on the connection of glue, which solves the maintenance problem in the current highly integrated battery pack and improves the battery module.
  • the safety performance of the group has the characteristics of high structural strength, integrity and stability.
  • a spacer plate is provided between the battery packs, a positioning column and a flange plate are arranged on the spacer plate, and mounting holes are opened on the flange plate and the positioning column, so that the fixing part passes through the mounting hole and the battery
  • the box body of the bag is fixedly connected to realize the Z-direction positioning between the partition plate and the box body, that is, positioning along the vertical direction; Z-axis movement: by setting end plates at both ends of the battery pack, the end plates and the spacer plates are locked by an interlocking mechanism, and the relief hole first compresses and deforms the shrapnel in the deformation zone, and after the deformation zone passes through the relief hole, The shrapnel in the slot rebounds and cooperates with the X-direction limiting groove to complete the X-direction self-locking between the end plate and the middle partition plate; the inner winding core designed by the winding structure is set inside a single cell, and Set a shell rounded corner with a large
  • FIG. 1 is a schematic structural view of a battery cell in a battery module according to an embodiment of the present application
  • FIG. 2 is a partial structural schematic diagram of a battery module according to an embodiment of the present application.
  • FIG. 3 is a partial structural schematic diagram of a battery module according to an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a post in a battery module according to an embodiment of the present application.
  • Fig. 5 is a partial structural diagram of a battery module according to an embodiment of the present application.
  • Fig. 6 is a partial structural schematic diagram of a battery module according to an embodiment of the present application.
  • Fig. 7 is a schematic structural view of the battery cell in the battery module according to an embodiment of the present application
  • FIG. 8 is a schematic diagram of an exploded structure of a battery module according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an exploded structure of a battery module according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a spacer in a battery module according to an embodiment of the present invention.
  • Fig. 11 is a schematic structural diagram of a post in a battery module according to an embodiment of the present invention.
  • Fig. 12 is a partial structural schematic diagram of a battery module according to an embodiment of the present application.
  • FIG. 13 is a partial structural schematic diagram of a battery module according to an embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a battery module and its battery pack according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a battery module according to an embodiment of the present application.
  • Fig. 16 is an exploded schematic diagram of the battery module of the embodiment shown in Fig. 15;
  • Fig. 17 is a schematic structural view of a partition plate of the battery module of the embodiment shown in Fig. 15;
  • Fig. 18 is a schematic structural view of the end plate of the battery module of the embodiment shown in Fig. 15;
  • Fig. 19 is a schematic structural view of the deformation region of the spacer plate of the battery module in the embodiment shown in Fig. 17,
  • Fig. 20 is a schematic top view of the deformation zone of the embodiment shown in Fig. 19;
  • Fig. 21 is a partially enlarged view of the end plate of the embodiment shown in Fig. 18 .
  • spatial relation terms such as “below”, “below”, “below”, “below”, “above”, “on” and so on may be used herein to describe an element shown in the drawings. Or the relationship of a feature to other components or features. It will be understood that these spatially relative terms are intended to encompass other orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary terms “below” and “under” can encompass both an orientation of up and down.
  • structures described as having a first feature "on top of” a second feature may include embodiments where the first and second features are formed in direct contact, as well as additional features formed on top of the first and second features. Embodiments between the second feature such that the first and second features may not be in direct contact. It will be understood that when an element is referred to as being “on,” “connected to,” “coupled to” or “contacting” another element, it can be directly on the other element. On, connected or coupled to, or in contact with, the other component, or there may be an intervening component. In contrast, when an element is referred to as being “directly on,” “directly connected to,” “directly coupled to” or “directly contacting” another element, there are no intervening elements present.
  • first component when referred to as being “electrically contacting” or “electrically coupled to” a second component, there exists an electrical path between the first component and the second component that allows electrical current to flow.
  • This electrical path may include capacitors, coupled inductors, and/or other components that allow current to flow, even without direct contact between conductive components.
  • a battery module provided by the present application includes a plurality of electric cells and a fixing assembly, the fixing assembly includes a plurality of posts, and each post is sandwiched between the plurality of electric cells.
  • the battery module of the present application and the battery pack including the battery module can be used in any electrical equipment that needs to be equipped with a battery pack, such as an electric vehicle.
  • FIG. 1 is a schematic structural diagram of a battery cell in a battery module according to an embodiment of the present application.
  • the cell 110 is a square cell.
  • Figure 1 shows the actual direction of the battery cell 110 when it is installed in the battery module, that is, the battery cell 110 is set along its vertical direction, and this direction is also called the Z direction or the Z-axis direction, as shown in Figure 1 pointed by the arrow.
  • the square cell 110 has a plurality of edges extending along its vertical direction, and each edge is provided with a rounded corner structure 120 .
  • the cell 110 has four rounded corner structures 120 respectively located at four edges of the square cell.
  • FIG. 2 is a partial structural diagram of a battery module according to an embodiment of the present application. Referring to FIG. 2 , it includes four cells 110 closely arranged, and the four cells 110 are arranged in 2 rows*2 columns. FIG. 2 also shows a battery pack body 210 , and four battery cells 110 are disposed inside the battery pack body 210 . A first cavity 220 is formed in the center of the four battery cells 110. Figure 2 does not include the fixed components in the battery module.
  • Common square cells do not have rounded corners.
  • a rounded corner structure with a relatively large radian is provided on the edge of the shell of the battery cell, thereby forming a first cavity 220 , and inserting posts are arranged in the first cavity 220 .
  • FIG. 2 is not intended to limit the quantity and specific arrangement of the battery cells 110 in the battery module.
  • FIG. 3 is a partial structural diagram of a battery module according to an embodiment of the present application.
  • a fixing component 310 is provided in the first cavity 220 formed by the four cells 110 , and one cell 110 is removed to expose the fixing component 310 .
  • the fixing assembly 310 includes a plurality of posts 320 , one post 320 located between four adjacent cells 110 is shown in FIG. to touch, to touch each other.
  • FIG. 4 is a schematic structural diagram of a post in a battery module according to an embodiment of the present application.
  • a stake 320 includes an inner cavity body 321 and an outer abutment layer 322 , and the inner cavity body 321 is disposed in the outer abutment layer 322 .
  • the outer contact layer 322 is in contact with the battery cell 110 .
  • the outer abutting layer 322 of the post 320 in this embodiment includes four concave surfaces 323, and the radian and size of each concave surface 323 match the rounded corner structure of the electric core 110, so that it is compatible with the post
  • the four rounded corner structures of the four adjacent battery cells 110 at 320 are respectively abutted against the four concave surfaces 323 of one post 320 , thereby forming a stable abutting relationship.
  • the outer abutting layer 322 is a plastic layer, and the material of the inner cavity 321 is metal.
  • outer abutment layer 322 is an insulating layer.
  • a fixing member 324 is disposed in the inner cavity 321 , and the post 320 is connected and arranged on the battery pack body 210 through the fixing member 324 , and the fixing member 324 is a bolt.
  • FIG. 5 is a partial structural diagram of a battery module according to an embodiment of the present application.
  • a plurality of posts 320 are connected to form a plurality of fixed groups 510, and a plurality of posts 320 are integrally formed, and a plurality of fixed groups 510 are connected and arranged, and the fixed group 510 is provided with multiple A connecting piece 520, a plurality of fixed groups 510 are connected through the connecting piece 520.
  • two posts 320 are connected to each other to form a fixed group 510 .
  • the fixing group 510 may be disposed in two adjacent first cavities 220 .
  • a plurality of connection structures 511, 512, 513 are also provided between the two stakes 320, wherein the connection structure 511 is used to connect the tops of the two stakes 320, and the connection structures 512, 513 are respectively used to connect at different heights.
  • the outer abutment layer 322 of the 2 stakes 320 By setting the fixing group 510, the stability of the post 320 can be further enhanced to provide better support and fixation for the battery module.
  • the connecting piece 520 is a strip-shaped sheet structure.
  • two connecting pieces 520 are used to connect at the top of the posts 320 .
  • the connecting piece 520 has some connecting holes 521 corresponding to the inner cavity 321 at the top of the post 320 .
  • the connecting piece 520 abuts against the tops of all the corresponding fixing groups 510, each connecting hole 521 is aligned with the inner cavity 321 at the top of the corresponding post 320, and the fixing member 324 is used to pass through the connecting holes 521 and
  • the inner cavity 321 can fix the connecting piece 520 and the fixing group 510 on the battery pack body 210 as a whole.
  • FIG. 6 is a partial structural diagram of a battery module according to an embodiment of the present application.
  • a limiting column 610 is provided on the inner wall of the battery pack body 210 , and the limiting column 610 abuts against the battery cell 110 and the inner wall of the battery pack body 210 .
  • a second cavity 230 is formed between the battery cell 110 and the inner side wall of the battery pack body 210 , and the limiting post 610 shown in FIG. 6 is fit and plugged into the second cavity 230 . It is also possible to increase the avoidance space on the battery pack body, or leave enough space between the battery pack body and the battery cells for additional fixing points.
  • the battery cells of this application provide gaps through large rounded corners, and components are placed between the cell gaps for fixing the height direction of the cells. Multiple fixing components can be connected and combined with each other, thereby improving the volume utilization of the battery pack. Rate.
  • FIG. 7 is a schematic structural diagram of a battery cell in a battery module according to an embodiment of the present application. Referring to FIG. 7 , the inner winding structure of the battery core 110 is highlighted.
  • the battery cell 110 includes a casing 710 , and a winding inner core 720 is disposed inside the casing 710 .
  • the battery cell 110 may also be called a square shell battery cell, and the rounded corner structure is also called a rounded corner.
  • FIG. 8 is a schematic diagram of an exploded structure of a battery module according to an embodiment of the present invention.
  • the battery module 800 includes a battery pack 810 , a fixed bottom plate 820 and a connection assembly 830 .
  • the cell group 810 includes two cell groups 811, 812, and each cell group includes a plurality of closely arranged cells 813.
  • the cell 813 in FIG. 8 may be the same as or different from the cell 110 in FIGS. 1-7 .
  • FIG. 9 is a schematic diagram of an exploded structure of a battery module according to an embodiment of the present invention.
  • the cell pack 810 includes a spacer plate 910 .
  • FIG. 10 is a schematic structural diagram of a spacer plate in a battery module according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural view of a post in a battery module according to an embodiment of the present invention.
  • the spacer plate 910 includes at least two barrier pieces 911 , and posts are arranged between two adjacent barrier pieces 911 .
  • the post includes a body 921 and an outer abutting layer 922 disposed on the outer wall of the body 921 . Further, the body 921 defines a through inner cavity 923 , and a fastener is inserted into the inner cavity 923 , and the fastener is used to fix the post and the partition plate 910 .
  • the diameter of the body 921 is not smaller than the thickness of the barrier sheet 911 .
  • the thickness of the barrier sheet 911 may be referred to as the thickness of the spacer plate 910 .
  • the body 921 includes a hollow cuboid, cylinder or prism structure.
  • the body 921 is made of metal material.
  • the metal material includes any one or a combination of at least two of copper, zinc, aluminum or iron and alloys thereof.
  • the barrier sheet 911 is made of metal material and/or plastic material.
  • the outer abutting layer 922 includes any one or a combination of at least two of airgel felt, insulating foam board, or PP material.
  • metal materials and/or plastic materials can be selected for the barrier sheet of the separator provided by the present invention.
  • the barrier sheet and the body are made of the same metal material, those skilled in the art can combine the metal material together according to the actual situation. Pressing and molding to obtain an integrally formed partition requires an insulating layer to be provided on both the body and the outer wall of the barrier sheet.
  • the top of the body 921 is provided with a supporting platform 924 for accommodating the head of the fastener.
  • the diameter of the supporting platform 924 is not smaller than the diameter of the body 921 .
  • the width of the support platform 924 is greater than the diameter of the body 921 .
  • the supporting platform 924 is in the shape of a ring and has a circular hole in which the inner cavity 923 can be exposed.
  • the support platform has a thickness greater than 0.5 mm.
  • an inner cavity 923 is provided in the body 921 to allow connectors or fixing parts to extend into the inner cavity 923 so as to connect or fix the partition plate 910, and adopt a hollow structure to reduce the overall weight of the partition plate 910 , the support platform 924 provided at one end of the body 921 can accommodate the head of the fastener and enhance the strength of the partition.
  • the present application provides a battery module 800, the battery pack 810 includes at least two battery packs 811, 812 arranged side by side, and the two adjacent battery packs 811, 812 are arranged between There is a spacer plate 910 provided in a specific embodiment.
  • Each cell pack includes a plurality of closely arranged single cells 813 .
  • the battery module provided by the present application has compact structure, small volume, and light weight, and the battery module therein has a relatively high grouping rate and a high degree of integration, which improves installation efficiency.
  • end plates 930 are respectively provided on both sides of the cell pack 810 .
  • two end plates 930 are included, which are respectively arranged at two ends of the cell pack 810 .
  • the spacer plate 910 is vertically or parallel to the end plate 930 . In the embodiment shown in FIG. 9 , spacer plates 910 are perpendicular to end plates 930 .
  • the battery cell 813 of the battery pack 810 includes a casing 814 , and a winding inner core (not shown) is disposed inside the casing 814 .
  • the height of the barrier sheet 11 of the partition plate 910 is not less than the height of the housing 814 .
  • the battery module 800 also includes a fixed bottom plate 820 , and the battery pack 810 is detachably fixed on the surface of the fixed bottom plate 820 .
  • the fixed bottom plate 820 includes a bottom plate 821 , and the surface of the fixed bottom plate 820 refers to the bottom plate 821 .
  • the outer edge of the fixed bottom plate 820 is bent toward the direction close to the battery pack 810 to form a receiving chamber, and the battery pack 810 is located in the receiving chamber.
  • a fixing hole 823 is defined on the surface of the fixing bottom plate 820 , and the fixing hole 823 is used for fixing the cell pack 810 .
  • two vertical plates 822 are formed after the outer edge of the fixed bottom plate 820 is bent toward the direction close to the battery pack 810 , and the two vertical plates 822 and the bottom plate 821 together form an accommodation cavity.
  • the fixed bottom plate may include a bottom plate for supporting the battery module, and vertical plates are respectively provided on both sides of the bottom plate, and the battery cell
  • the end plate of the module is arranged adjacent to the vertical plate, and a limit column 824 for fixing the end plate can be arranged on the bottom plate, as shown in FIG. 8 .
  • the fasteners are inserted into the hollow chamber and the fixing hole sequentially to realize the fixing of the fixed bottom plate and the cell module.
  • the number of fixed points inside the battery module is increased, and the battery module is enhanced.
  • the mechanical strength of the battery module allows the battery module to retain its replacement function in the battery module while having a high grouping rate.
  • the battery module 800 further includes a connection assembly 830 , which is placed on the side of the cell pack 810 away from the fixed bottom plate 820 , and the connection assembly 830 is used to realize the series-parallel connection of the cells 813 .
  • the fixed bottom plate 820 is located on the lower side of the battery pack 810
  • the connection assembly 830 is located on the upper side of the battery pack 810 .
  • the lower side of the battery pack 810 is in contact with the bottom plate 821
  • the upper side of the battery pack 810 is in contact with the lower surface of the connection assembly 830 .
  • the connecting component 830 includes a connecting plate 831 and a sampling unit 832. As shown in FIG. 8, the connecting plate 831 and The cell modules are connected by bolts, welded or buckled, and the sampling unit 832 is electrically connected to the cells.
  • the connection components can select the connection components according to the actual situation or the structure of the required battery module. Therefore, the prior art Other forms of connecting components disclosed in or not disclosed in the new technology can also be used in the present invention.
  • the connecting plate 831 shown in FIG. 8 is similar in function to the connecting piece 520 shown in FIG. 5 , but the structure is different.
  • the present application provides a battery pack, which includes the battery module provided in a specific embodiment, and the battery pack further includes a box disposed on the outer wall of the battery module. Further, the fasteners of the battery module 800 pass through the fixing holes of the fixing bottom plate 820 and are connected with the box body, so as to realize the detachable fixing of the battery module 800 and the box body.
  • the box body of the battery pack is equivalent to the battery pack body 210 in the embodiment shown in FIGS. 1-7 , with the same function but different structures.
  • the present invention does not specifically limit or require the structure of the box, and those skilled in the art can choose according to specific working conditions.
  • a rectangular parallelepiped structure can be used.
  • the battery module in the battery pack of the present invention The fixing does not rely on bonding, so there is no need to make specific limitations on the size of the contact surface between the box and the battery module.
  • the features on the box can be improved accordingly according to the actual situation of those skilled in the art, so that it is convenient to use sheet metal stamping. Shaped to reduce the manufacturing cost of the box.
  • the present invention provides an electric vehicle, which uses the battery pack provided in a specific embodiment.
  • the fastener provided by the present invention is used for the assembly of the battery module.
  • the assembly of the existing battery module usually adopts the method of bonding, resulting in a relatively weak strength of the battery module. low, and in the hollow chamber of the separator in the present invention, by inserting fasteners without relying on the connection of glue, the assembly of the battery module can be realized, which is conducive to improving the structural strength of the battery module and the grouping of the battery module Rate.
  • Embodiment 2 specifically includes Embodiments 1-3, and the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.
  • FIG. 12 is a partial structural diagram of a battery module according to an embodiment of the present application.
  • This embodiment provides a battery pack, including a battery module and a box sheathed on the outer wall of the battery module. Inside the fixed bottom plate 820 , a connecting component 830 is provided on a side of the battery pack 810 away from the fixed bottom plate 820 .
  • end plates 930 are respectively provided on both sides of the battery pack 810 , and the battery pack 810 includes two sets of battery packs 811 and 812 arranged side by side, and each set of battery packs 811 Seventeen cells 813 are arranged in , 812, a spacer 910 is arranged between the two cell groups 811, 812, the spacer 910 is perpendicular to the end plate 930, and the spacer 910 includes seventeen barrier sheets 911, which are relatively
  • a post is disposed between two adjacent barrier pieces 911 , and the post includes a body 921 and an outer abutting layer 922 disposed on the outer wall of the body 921 .
  • the post is made of aluminum alloy
  • the barrier sheet 11 is made of plastic material
  • the outer contact layer 922 is made of insulating foam.
  • the body 921 is provided with a through inner cavity 923 , and one end of the body 921 is provided with a supporting platform 924 .
  • the main body 921 is a hollow cylindrical structure, the diameter of the main body 921 is greater than the thickness of the barrier sheet 11, the support platform 924 is a disc structure with through holes on the surface, and the radius of the support platform 924 is greater than the radius of the cross section of the main body 921.
  • the battery core 813 includes an aluminum shell and a winding inner core arranged in the aluminum shell.
  • the side of the aluminum shell close to the body 921 is an arc-shaped surface.
  • the barrier sheet 11 of the partition plate 910 is close to the outer wall of the shell.
  • the support platform 924 is located on the aluminum shell. above.
  • the fixed bottom plate 820 includes a bottom plate 821 , vertical plates 822 are erected on both sides of the bottom plate 821 , and the body 921 of the spacer plate 910 is set close to the bottom plate 821 at an end away from the support platform 924 .
  • a row of fixing holes 823 is provided on the surface of the bottom plate 821.
  • the spacer plate 910 also includes sixteen fasteners. The fasteners are respectively inserted into the inner cavity 923 of the spacer plate 910 and passed through the fixing holes 823, so that the battery pack 810 and The connection of the base plate 820 is fixed.
  • the bottom plate 823 supports the cell set 810 , and the vertical plates 822 are respectively attached to both sides of the cell set 810 .
  • FIG. 13 is a partial structural diagram of a battery module according to an embodiment of the present application.
  • This embodiment provides a battery pack, including a battery module and a box sheathed on the outer wall of the battery module.
  • a battery pack including a battery module and a box sheathed on the outer wall of the battery module.
  • a connecting component 830 In the fixed bottom plate 820 , and the side of the battery pack 840 away from the fixed bottom plate 820 is provided with a connecting component 830 .
  • the battery module includes a battery pack 840, and the two sides of the battery pack 840 are respectively provided with end plates 930, and the battery pack 840 includes eleven battery packs 841 arranged side by side.
  • each cell group 841 includes three cells 813 connected in sequence
  • a spacer plate 910 is arranged between two adjacent cell groups 841
  • a total of ten spacer plates 910 and each spacer plate 910 is connected to the end plate 930 are parallel to each other
  • each partition plate 910 includes three barrier pieces 911 , between two adjacent barrier pieces 911 there is a post
  • the post includes a body 921 and an outer abutting layer 922 arranged on the outer wall of the body 921 .
  • the post is made of iron alloy
  • the barrier sheet 911 is made of plastic material
  • the outer contact layer 922 is made of airgel felt.
  • the body 921 is provided with a through inner cavity 923 , and one end of the body 921 is provided with a supporting platform 924 .
  • the body 921 is a hollow cylindrical structure, the diameter of the body 921 is greater than the thickness of the barrier sheet 911, the support platform 924 is a disc structure with through holes on the surface, and the radius of the support platform 924 is greater than the radius of the body 921.
  • the electric core 813 includes a casing and a winding inner core arranged in a steel shell. The side of the steel shell close to the body 921 of the partition plate 910 is an arc-shaped surface. above the steel shell.
  • the fixed bottom plate 820 includes a bottom plate 821 , vertical plates 822 are erected on both sides of the bottom plate 821 , and an end of the body 921 of the spacer plate 910 away from the supporting platform 924 is set close to the bottom plate 821 .
  • the bottom plate 821 supports the cell set 840 , and the vertical plates 822 are respectively attached to both sides of the cell set 840 .
  • Embodiment 3 The difference between embodiment 3 and embodiment 2 is that the post is made of stainless steel, the barrier sheet 911 is made of plastic material, and the outer contact layer 922 is made of PP material.
  • Other parts of Embodiment 3 are the same as Embodiment 2, and reference may be made to the description of Embodiment 2.
  • the battery module provided by this application has a high grouping rate and a high degree of integration.
  • the setting of the spacer plate 910 increases the number of fixed points inside the battery module and increases the number of battery modules.
  • the battery pack provided by this application increases the number of fixed points inside the battery module without affecting the current volume utilization rate, and increases the mechanical connection strength between the battery module and the box through the form of multi-point connection to the box. At the same time, the size of the battery module does not rely on glue to connect with the box, which solves the maintenance problem in the current highly integrated battery pack.
  • the spacer plate 910 is also called a spacer
  • the inner cavity 923 is also called a hollow chamber
  • the outer abutment layer 922 is also called an insulating layer
  • the post is also called an insulating layer.
  • each cell pack 811, 812 is also called a cell module.
  • Figure 14 is a schematic structural diagram of the battery module and its battery pack
  • Figure 15 is a structural schematic diagram of the battery module
  • Figure 16 is a schematic diagram of the explosion of the battery module, including the battery pack 1410, terminal
  • the plate 1420 and the spacer plate 1430 , the battery pack 1410 includes a plurality of battery cells 1411 with charging and discharging functions, and the multiple battery cells 1411 are arranged in a row to form the battery pack 1410 .
  • FIG. 1 is also a structural schematic diagram of the battery cell 1411
  • FIG. 7 is also a structural schematic diagram of the battery cell 1411
  • the battery cell 1411 includes a casing 710 and an inner winding core 720
  • the inner winding core 720 is arranged in the casing 710
  • the inner winding core 720 is arranged in a winding structure
  • the casing 710 is arranged in a rounded corner structure.
  • the cells 1411 are arranged in contact with each other through the casing 710 with rounded corners.
  • FIG. 17 is a schematic structural diagram of a spacer plate in a battery module according to an embodiment of the present application.
  • the post 1710 is disposed in the gap formed by the contact of the fillet structure of the adjacent shells 710 , so that a certain internal space can be reserved for the arrangement of the fixing components.
  • the battery cell 1411 is a square shell battery cell.
  • the battery pack 1410 is provided with a strap 1510 for shaping in the length direction, and the strap 1510 is arranged around the battery pack 1410 and the end plate 1420 .
  • the battery cell 1411 has a width extending along the first direction D1, and a plurality of battery cells 1411 are arranged along the first direction D1 to form a battery cell In group 1410, the spacer plate 1430 extends along the first direction D1.
  • FIG. 17 is a schematic structural diagram of the spacer plate 1430, a spacer plate 1430 is provided between the cell group 1410 and the adjacent cell group 1410, and a plurality of posts 1710 are evenly spaced on the spacer plate 1430, and the adjacent post 1710 The distance between them is set corresponding to the width of the electric core 1411 , and the electric core 1411 is fixedly arranged between the posts 1710 .
  • the spacer plate 1430 is provided with a flanging plate 1720 and a deformation zone 1730, the flanging plate 1720 and the post 1710 are vertically arranged, the flanging plate 1720 protrudes from the spacer plate 1430, and
  • the side plate 1720 is set in contact with the upper end surface of the cell pack 1410, the deformation zone 1730 is set at the end of the spacer plate 1430, the flange plate 1720 is provided with a mounting hole 1721, and the insertion post 1710 is provided with a through hole, and the mounting hole 1721 corresponds to Through-hole settings.
  • FIG. 18 is a schematic structural view of the end plate 1420 .
  • FIG. 21 is a partially enlarged view of FIG. 18 .
  • the end plates 1420 are respectively arranged at both ends of the cell pack 1410 , and the end plates 1420 are unidirectionally locked with the spacer plate 1430 through an interlocking mechanism.
  • the end plate 1420 is provided with a limiting groove 1421, and one side of the limiting groove 1421 is provided with a relief hole 1422 corresponding to the spacer plate 1430, and the deformation zone 1730 on the spacer plate 1430 is fixed to the An interlock mechanism is formed in the limiting groove 1421 .
  • a limit block 1423 and a limit groove 1424 are arranged in the limit groove 1421, and the limit block 1423 and the limit groove 1424 are arranged on both sides of the limit groove 1421 in correspondence with each other.
  • the positioning grooves 1424 are longitudinally spaced in the limiting groove 1421 .
  • FIG. 19 is a schematic structural view of the deformation zone 1730
  • FIG. 20 is a schematic top view of the deformation zone 1730
  • the deformation zone 1730 includes a slot 1731 and an elastic piece 1732.
  • the slot 1731 is longitudinally and evenly spaced at the end of the end plate 1420.
  • the inner side of the slot 1731 close to the end of the end plate 1420 is provided with a first groove wall.
  • One end of the elastic piece 1732 is fixedly arranged on the wall of the first groove, and the other end of the elastic piece 1732 protrudes from the body of the partition plate 1430 .
  • the deformed area 1730 moves into the limiting groove 1421 by compressing the elastic piece 1732 through the relief hole 1422 , and the deformed area 1730 is fixedly arranged with the end plate 1420 by being self-locked in the limiting groove 1424 by the resilient piece 1732 .
  • the present application also provides a battery pack.
  • the battery module used includes a box body 1440, and a support beam 1442 is arranged inside the box body 1440, and the support beam 1442 is arranged between adjacent battery modules.
  • the battery module is fixedly arranged in the box body 1440 through the fixing member 1441 , and the fixing member 1441 is arranged through the post 1710 through the installation hole 1721 .
  • bolts are used as the fixing member 1441 .
  • the box body 1440 is equivalent to the battery pack body 210 .
  • the post 1710 is also called a positioning post
  • the limit block 1423 is also called a Y-direction limit block
  • the limit groove 1424 is also called an X-direction limit groove.
  • the process of setting up the battery module and the battery pack of the third embodiment includes: arranging each battery cell 1411 in a set of battery cells 1410 between the posts 1710 on one side of the partition plate 1430, and placing the battery cells 1411 Bonding with the spacer plate 1430 may be done by glue bonding or adhesive tape bonding, or bonding in other ways. After completing the setting of the battery cell group 1410 on one side of the spacer plate 1430 , the battery cell group 1410 on the other side of the spacer plate 1430 is fixed in the same way. End plates 1420 are provided at both ends of the cell pack 1410, as shown in the arrow direction in FIG.
  • the elastic piece 1732 in the slot 1731 rebounds and cooperates with the limiting groove 1424 to complete the X-direction self-locking between the end plate 1420 and the middle partition plate 1430 .
  • the strap 1510 is used for shaping in the length direction.
  • the bolts are fixed in the box body 1440 through the mounting holes 1721 and the post 1710.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请提供一种电池模组、电池包和电动车。该电池模组包括固定组件，所述固定组件包括多个插柱，所述插柱夹设在多个所述电芯之间。进一步地，所述电芯的棱边设置有圆角结构，所述插柱与所述圆角结构相抵接。根据该电池模组，通过多个插柱提供多个可拆卸的加固点，不影响电芯在电池包内的堆叠密度，增加了电池模组的机械连接强度，电池模组和插柱的可拆卸设计解决了集成电池包的维护问题，提高了电池模组的安全性，具有结构强度高，整体性和稳定性强的特点。

Description

电池模组、电池包和电动车 技术领域
本申请涉及电池领域，具体地，涉及一种电池模组、包括该电池模组的电池包和包括该电池包的电动车。
背景技术
一些电池包包括中空的箱体以及设置在箱体内部的电池模组。为了提高电池模组的成组率，通常采用铝合金型材拼接的电池包，提升了电池包的制造成本。
为了提升能量密度，电池包中通常是将尽可能多的尺寸用于电芯排布，留给结构件的空间较少。为了固定电池模组，通常是采用粘贴的方式，例如采用双面胶带将电池模组粘贴在箱体的内壁上。然而，胶带的粘性会随着使用时间的增加而降低，造成电池模组的松动，对电池包的使用造成较大影响；并且，胶水本身的性能在生产过程中可监控性不高，容易出现批量性的产品不良；另外，通过粘贴的方式使得电池模组不可拆卸，使用不便。
此外，对于动力电池的电池包来说，为了提升电池性能，会使用较为密集的电芯堆叠形式，无法在电池包内设置固定点。如果设置固定点的话，则会浪费电池包内部横向或纵向较多的空间。
发明内容
本申请要解决的技术问题是提出一种包括多个可拆卸的加固点的电池模组、电池包和电动车。
本申请本为解决上述技术问题提出一种电池模组，包括多个电芯，其特征在于，包括固定组件，所述固定组件包括多个插柱，所述插柱夹设在多个所述电芯之间。
在本申请的一实施例中，所述电芯的棱边设置有圆角结构，所述插柱与所述圆角结构相抵接。
在本申请的一实施例中，所述插柱包括内腔体和外抵接层，所述内腔体设置在所述外抵接层内；所述外抵接层与所述电芯相抵接。
在本申请的一实施例中，所述外抵接层为绝缘层。
在本申请的一实施例中，所述插柱包括本体，所述本体包括内腔体和外抵接层，所述内腔体贯通所述本体，所述电池模组还包括紧固件，所述紧固件插设在所述内腔体中，所述紧固件用于固定所述插柱。
在本申请的一实施例中，所述本体的顶部设置有用于容纳所述紧固件头部的支撑平台，所述支撑平台的宽度大于所述本体的直径。
在本申请的一实施例中，多个所述插柱相连接形成固定组。
在本申请的一实施例中，多个所述固定组连接设置。
在本申请的一实施例中，所述固定组上设置有多个连接片，多个所述固定组通过所述连接片相连接。
在本申请的一实施例中，还包括电芯组和间隔板，每个所述电芯组包括多个电芯，每个所述电芯具有沿第一方向延伸的宽度，所述多个电芯沿第一方向排列形成所述电芯组，所述间隔板设置在相邻的所述电芯组之间，所述间隔板沿所述第一方向延伸，多个所述插柱均匀间隔地设置在所述间隔板上，相邻的所述插柱之间的距离对应于所述电芯的宽度，所述电芯固定设置在相邻的所述插柱之间。
在本申请的一实施例中，所述间隔板上设置有翻边板和变形区，所述翻边板与所述插柱相互垂直设置，所述翻边板凸出于所述间隔板设置，所述翻边板上开设有安装孔，所述安装孔对应所述内腔体设置；所述变形区设置在所述间隔板的端部。
在本申请的一实施例中，还包括端板，所述端板设置在所述电芯组的两端，所述端板通过互锁机构与所述间隔板单向锁止。
在本申请的一实施例中，所述间隔板垂直或平行于所述端板。
在本申请的一实施例中，所述端板上设置有限位槽，所述限位槽的一侧设置有让位孔，所述变形区通过所述让位孔固定至所述限位槽中以构成所述互锁机构。
在本申请的一实施例中，所述限位槽内部设置有限位块和限位凹槽，所述限位块和所述限位凹槽相互对应地设置在所述限位槽的两侧，所述限位块和所述限位凹槽沿第二方向间隔设置，所述第二方向是所述端板的竖立方向。
在本申请的一实施例中，所述变形区包括开槽和弹片，所述开槽沿所述第二方向均匀间隔地设置在所述间隔板的端部，所述开槽靠近端板的一端内侧设有第一 槽壁，所述弹片的一端固定设置在所述第一槽壁上，所述弹片的另一端凸出所述间隔板的板身设置。
在本申请的一实施例中，所述变形区通过所述让位孔压缩所述弹片移动至所述限位槽内，所述变形区通过所述弹片回弹自锁在所述限位凹槽中而与所述端板固定设置。
在本申请的一实施例中，所述电芯包括壳体和内卷心，所述内卷心设置在所述壳体内，所述内卷心采用卷绕结构设置，所述壳体包括圆角结构。
在本申请的一实施例中，相邻的所述电芯的所述壳体通过所述圆角结构相接触，所述插柱设置在相邻的所述壳体的所述圆角结构接触形成的空隙内。
在本申请的一实施例中，所述间隔板紧贴所述壳体的外壁，所述间隔板沿其竖立方向的高度不小于所述壳体的高度。
在本申请的一实施例中，所述电芯组外围设有绑带，所述绑带环绕所述电芯组和所述端板，所述绑带用于沿所述第一方向对所述电芯组进行整形。
在本申请的一实施例中，所述电芯包括方壳电芯。
在本申请的一实施例中，还包括固定底板，所述电芯组可拆卸地固定于所述固定底板的表面；所述固定底板的外缘向靠近所述电芯组的方向弯折形成容纳腔，所述电芯组位于所述容纳腔内；所述固定底板的表面开设有固定孔，所述紧固件还穿过所述固定孔以固定所述电池模组。
在本申请的一实施例中，还包括连接组件，所述连接组件设置于所述电芯组远离所述固定底板的一侧，所述连接组件用于实现多个所述电芯之间的串并联。
本申请为解决上述技术问题还提出一种电池包，包括如上所述的电池模组，其特征在于，包括电池包本体，所述多个电芯设置在所述电池包本体内。
在本申请的一实施例中，所述电池包本体的内侧壁上设置有限位柱，所述限位柱与所述电芯、所述电池包本体的内侧壁相抵接。
本申请为解决上述技术问题还提出一种电动车，其特征在于，包括如上所述的电池包。
本申请通过将电芯壳体的圆角扩大，使多颗电芯的交汇位置保留一个可用于固定的空间，同时不会影响电芯在电池包内的堆叠密度；本申请的多个固定组之间通过连接片互相连接，可以提升整体强度；本申请的固定组以及连接片 上还可增加其他特征，可作为安装平台，用于固定电池包内的其他零部件，提高了应用性。
本申请提供的用于电池模组的隔板、电池包及电动车，在不影响当前体积利用率的前提下，插柱的设置增加了电池模组内部的固定点数量，增加了电池模组的机械连接强度，有利于提高了电池模组的成组率，增加体积的同时，使得电池模组的固定不依靠胶水的连接，解决了当前高集成电池包内的维护问题，提高了电池模组的安全性能，具有结构强度高，整体性和稳定性强的特点。
本申请的一些实施例通过在电芯组之间设置间隔板，在间隔板上设置定位柱、翻边板，并在翻边板与定位柱上开设安装孔，使得固定件通过安装孔与电池包的箱体固定连接，实现间隔板与箱体之间的Z向定位，也即沿竖直方向定位；并且通过翻边板与两侧电芯组的上端面接触，用于限制电芯在Z轴的运动；通过在电芯组两端分别设置端板，端板与间隔板通过互锁机构进行锁定，让位孔先使变形区的弹片压缩变形，在变形区通过让位孔之后，开槽内的弹片回弹，与X向限位凹槽相配合，完成端板与中部间隔板之间的X向自锁；通过在单个电芯内部设置卷绕结构设计的内卷心，并在电芯的外部设置具有较大圆弧角度的壳体圆角，保证多颗电芯在堆叠时，能够保留一定的内部空间，用于固定组件的布置；在每个电芯组周围设置支撑梁，支撑梁与电池包的箱体相连，保证电池包与整车连接的刚性。
附图概述
本申请的特征、性能由以下的实施例及其附图进一步描述。
图1是本申请一实施例的电池模组中的一个电芯的结构示意图；
图2是本申请一实施例的电池模组的部分结构示意图；
图3是本申请一实施例的电池模组的部分结构示意图；
图4是本申请一实施例的电池模组中的插柱的结构示意图；
图5是本申请一实施例的电池模组中的部分结构示意图；
图6是本申请一实施例的电池模组中的部分结构示意图；
图7是本申请一实施例的电池模组中的电芯的结构示意图
图8是本发明一实施例的电池模组的爆炸结构示意图。
图9是本发明一实施例的电池模组的分解结构示意图。
图10是本发明一实施例的电池模组中的间隔板的结构示意图；
图11是本发明一实施例的电池模组中的插柱的结构示意图；
图12是本申请一实施例的电池模组的部分结构示意图；
图13是本申请一实施例的电池模组的部分结构示意图；
图14是本申请一实施例的电池模组及其电池包的结构示意图；
图15是本申请一实施例的电池模组的结构示意图；
图16是图15所示实施例的电池模组的爆炸示意图；
图17是图15所示实施例的电池模组的间隔板的结构示意图；
图18是图15所示实施例的电池模组的端板的结构示意图；
图19是图17所示实施例的电池模组的间隔板的变形区的结构示意图，
图20是图19所示实施例的变形区的俯视示意图；
图21是图18所示实施例的端板的局部放大图。
本发明的较佳实施方式
为让本发明的上述目的、特征和优点能更明显易懂，以下结合附图对本发明的具体实施方式作详细说明。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是本发明还可以采用其它不同于在此描述的其它方式来实施，因此本发明不受下面公开的具体实施例的限制。
如本申请和权利要求书中所示，除非上下文明确提示例外情形，“一”、“一个”、“一种”和/或“该”等词并非特指单数，也可包括复数。一般说来，术语“包括”与“包含”仅提示包括已明确标识的步骤和元素，而这些步骤和元素不构成一个排它性的罗列，方法或者设备也可能包含其他的步骤或元素。
在详述本发明实施例时，为便于说明，表示器件结构的剖面图会不依一般比例作局部放大，而且所述示意图只是示例，其在此不应限制本发明保护的范围。此外，在实际制作中应包含长度、宽度及深度的三维空间尺寸。
为了方便描述，此处可能使用诸如“之下”、“下方”、“低于”、“下面”、“上方”、“上”等等的空间关系词语来描述附图中所示的一个元件或特征与其他元件或特征的关系。将理解到，这些空间关系词语意图包含使用中或操作中的器件的、除了附图中描绘的方向之外的其他方向。例如，如果 翻转附图中的器件，则被描述为在其他元件或特征“下方”或“之下”或“下面”的元件的方向将改为在所述其他元件或特征的“上方”。因而，示例性的词语“下方”和“下面”能够包含上和下两个方向。器件也可能具有其他朝向(旋转90度或处于其他方向)，因此应相应地解释此处使用的空间关系描述词。此外，还将理解，当一层被称为在两层“之间”时，它可以是所述两层之间仅有的层，或者也可以存在一个或多个介于其间的层。
在本申请的上下文中，所描述的第一特征在第二特征之“上”的结构可以包括第一和第二特征形成为直接接触的实施例，也可以包括另外的特征形成在第一和第二特征之间的实施例，这样第一和第二特征可能不是直接接触。应当理解，当一个部件被称为“在另一个部件上”、“连接到另一个部件”、“耦合于另一个部件”或“接触另一个部件”时，它可以直接在该另一个部件之上、连接于或耦合于、或接触该另一个部件，或者可以存在插入部件。相比之下，当一个部件被称为“直接在另一个部件上”、“直接连接于”、“直接耦合于”或“直接接触”另一个部件时，不存在插入部件。同样的，当第一个部件被称为“电接触”或“电耦合于”第二个部件，在该第一部件和该第二部件之间存在允许电流流动的电路径。该电路径可以包括电容器、耦合的电感器和/或允许电流流动的其它部件，甚至在导电部件之间没有直接接触。
本申请提供的一种电池模组，包括多个电芯和固定组件，该固定组件包括多个插柱，每个该插柱夹设多个电芯之间。本申请的电池模组和包括该电池模组的电池包可以用于电动车等任意需要配置电池包的电气设备。
实施例一
图1是本申请一实施例的电池模组中的一个电芯的结构示意图。参考图1所示，该电芯110是一种方形电芯。图1所示为该电芯110被设置在电池模组中时的实际方向，即该电芯110沿其竖立方向所设置，将该方向也称为Z方向或Z轴方向，如图1中的箭头所指。该方形的电芯110具有多个沿其竖直方向延伸的棱边，每个棱边设置有圆角结构120。在图1所示的实施例中，该电芯110具有4个圆角结构120，分别位于方形电芯的四个棱边处。
图2是本申请一实施例的电池模组的部分结构示意图。参考图2所示，其中包括了紧密排列的四个电芯110，该四个电芯110排列成2行*2列。图2中还示出了电池包本体210，四个电芯110设置在电池包本体210的内部。在该 四个电芯110的中央形成有第一空腔220。图2中尚未包括电池模组中的固定组件。
通常的方形电芯不具备圆角结构。本申请对电芯的外壳的棱边设置具有较大弧度的圆角结构，从而形成第一空腔220，以在该第一空腔220中设置插柱。
需要说明，图2所示不用于限制电池模组中的电芯110的数量和具体排列方式。
图3是本申请一实施例的电池模组的部分结构示意图。与图2相比，图3在该四个电芯110所形成的第一空腔220中设置了固定组件310，并且去掉一个电芯110使该固定组件310暴露出来。固定组件310包括多个插柱320，图3中示出了一个位于四个相邻的电芯110之间的插柱320，该插柱320与每个相邻的电芯110的圆角结构相抵接，也就是相互接触。
图4是本申请一实施例的电池模组中的插柱的结构示意图。参考图4所示，一个插柱320包括内腔体321和外抵接层322，内腔体321设置在外抵接层322内。结合图3所示，外抵接层322与电芯110相抵接。
结合图3和图4，该实施例的插柱320的外抵接层322包括四个凹面323，每个凹面323的弧度、尺寸和电芯110的圆角结构相匹配，使得与该插柱320相邻接的4个电芯110的四个圆角结构都分别与一个插柱320的四个凹面323相抵接，从而形成稳定的抵接关系。
在一些实施例中，外抵接层322为塑料层，内腔体321的材料为金属。
在一些实施例中，外抵接层322为绝缘层。
在一些实施例中，内腔体321内设置有固定件324，插柱320通过固定件324连接设置在电池包本体210上，固定件324为螺栓。
图5是本申请一实施例的电池模组中的部分结构示意图。参考图5所示，在一些实施例中，多个插柱320连接设置构成多个固定组510，多个插柱320一体成型设置，多个固定组510连接设置，固定组510上设置有多个连接片520，多个固定组510通过连接片520连接。
参考图5所示，在该实施例中，2个插柱320相互连接构成一个固定组510。该固定组510可以被设置在相邻的两个第一空腔220中。在2个插柱320之间还设置了多个连接结构511、512、513，其中，连接结构511用于连接2个插柱320的顶部，连接结构512、513分别用于在不同的高度连接2个插柱320的外抵接层322。通过设置固定组510，可以进一步加强插柱320的稳固性，给电 池模组提供更好的支撑和固定。
参考图5所示，连接片520是一种长条形的片状结构，对于具有2个插柱320的固定组510来说，采用2个连接片520在插柱320的顶端进行连接。如图5所示，连接片520上具有一些连接孔521，该连接孔521与插柱320顶部的内腔体321相对应。在安装好时，连接片520和对应的全部固定组510的顶部相抵接，每个连接孔521和对应的插柱320顶部的内腔体321相对准，采用固定件324穿过连接孔521和内腔体321，可以使连接片520、固定组510整体上一起固定在电池包本体210上。
图6是本申请一实施例的电池模组中的部分结构示意图。参考图6所示，电池包本体210的内侧壁上设置有限位柱610，限位柱610与电芯110、电池包本体210内侧壁相抵接。结合图2所示，在电芯110和电池包本体210的内侧壁之间形成有第二空腔230，图6所示的限位柱610与第二空腔230适配插接。还可以在电池包本体增加避让空间，或者电池包本体和电芯留足够的空间，用于增加固定点。
根据图1-图6所示的实施例，在对方壳电芯固定时，方壳电芯放置在电池包本体内，插柱位于多个方壳电芯之间并抵接在方壳电芯上，将插柱的外部涂上结构胶，插柱通过固定件固定在电池包底部内侧壁上，通过结构胶与周围方壳电芯连接，通过连接片将插柱进行连接。如此设置，在实现固定的同时进而提高了电池包的体积利用率。
本申请的电芯之间通过大圆角提供空隙，在电芯空隙之间安放零部件，用于电芯高度方向的固定，多个固定组件可互相连接与组合，进而提高了电池包的体积利用率。
图7是本申请一实施例的电池模组中的电芯的结构示意图。参考图7所示，其中突出显示了电芯110内部卷绕的结构。电芯110包括壳体710，壳体710内设有卷绕内芯720。
在图1-图7所示的实施例中，电芯110也可以被称为方壳电芯，圆角结构也被称为圆角。
实施例二
图8是本发明一实施例的电池模组的爆炸结构示意图。参考图8所示，电池模组800包括电芯组810、固定底板820和连接组件830。在该实施例中，电芯组810包括两个电芯组811、812，每个电芯组中都包括多个紧密排列的电 芯813。图8中的电芯813可以和图1-图7中的电芯110相同或不同。
图9是本发明一实施例的电池模组的分解结构示意图。参考图9所示，该电芯组810中包括间隔板910。
图10是本发明一实施例的电池模组中的间隔板的结构示意图。图11是本发明一实施例的电池模组中的插柱的结构示意图。参考图10所示，间隔板910包括至少两个阻隔片911，相邻的两个所述阻隔片911之间设置有插柱。参考图11所示，该插柱包括本体921以及设置于本体921外壁的外抵接层922。进一步的，所述的本体921内部开设贯通的内腔体923，内腔体923内插入紧固件，紧固件用于固定插柱和间隔板910。
在一些实施例中，本体921的直径不小于阻隔片911的厚度。阻隔片911的厚度可以被称为是间隔板910的厚度。
在一些实施例中，本体921包括空心的长方体、圆柱体或棱形柱体结构。
在一些实施例中，本体921采用金属材料制得。
在一些实施例中，该金属材料包括铜、锌、铝或铁及其合金中的任一种或至少两种的组合。
在一些实施例中，阻隔片911采用金属材料和/或塑料材料制得。
在一些实施例中，外抵接层922包括气凝胶毡、绝缘泡棉板或PP材料中的任一种或至少两种的组合。
需要说明的是，本发明提供的隔板的阻隔片可选择金属材料和/或塑料材料，当阻隔片与本体采用相同的金属材料时，本领域技术人员可根据实际情况，可将金属材料一同压制成型，得到一体成型的隔板，则需在本体与阻隔片外壁均设置绝缘层。
进一步的，本体921的顶部设置有用于容纳紧固件头部的支撑平台924。支撑平台924的直径不小于本体921的直径。支撑平台924的宽度大于本体921的直径。如图10所示，支撑平台924为圆环状，其中具有可以暴露内腔体923的圆孔。
优选地，支撑平台的厚度大于0.5mm。
本申请中的本体921内设置内腔体923，允许连接件或固定件伸入内腔体923内，以便进行间隔板910的连接或固定，并且采用中空结构，减轻了间隔板910的整体重量，本体921一端设置的支撑平台924，能够容纳紧固件的头部，增强了隔板的强度。
在一个具体实施方式中，本申请提供了一种电池模组800，电芯组810包括并排设置的至少两个电芯组811、812，相邻的两个电芯组811、812之间设置有一个具体实施方式提供的间隔板910。每个电芯组中包括多个紧密排列的单个的电芯813。
本申请提供的电池模组结构紧凑，体积小，重量轻，且其中的电池模组具有较高成组率，集成度高，提高了安装效率。
进一步的，如图9所示，电芯组810的两侧分别设置有端板930。在该实施例中，共包括2个端板930，分别设置在电芯组810的两端。
在一些实施例中，间隔板910垂直或平行设置于端板930。在图9所示的实施例中，间隔板910垂直于端板930。
参考图9所示，在一些实施例中，电芯组810的电芯813包括壳体814，壳体814内设有卷绕内芯(图未示)。
在一些实施例中，间隔板910的阻隔片11的高度不小于壳体814的高度。
进一步的，电池模组800还包括固定底板820，电芯组810可拆卸地固定于固定底板820的表面。如图8所示，固定底板820包括底板821，该固定底板820的表面指底板821。
在一些实施例中，固定底板820的外缘向靠近电芯组810的方向弯折形成容纳腔，电芯组810位于容纳腔内。固定底板820的表面开设有固定孔823，固定孔823用于固定电芯组810。如图8所示，固定底板820的外缘向靠近电芯组810的方向弯折之后形成了2个立板822，两个立板822和底板821一起形成容纳腔。
需要说明的是，本发明对于固定底板的具体结构不作具体限定或特殊要求，示例性地，固定底板可包括用于支撑电芯模块的底板，底板的两侧分别设置有立板，则电芯模块端板与立板相邻设置，底板上可设置用于固定端板的限位柱824，如图8所示。本发明中采用紧固件依次插入中空腔室和固定孔，实现固定底板与电芯模块的固定，在不影响当前体积利用率的前提下，增加了电池模组内部的固定点数量，增强了电池模组的机械强度，且使电芯模块在具有较高成组率的同时，保留其在电池模组中的替换功能。
参考图8所示，进一步的，电池模组800还包括连接组件830，连接组件830置于电芯组810远离固定底板820的一侧，连接组件830用于实现电芯813的串并联。如图8所示，固定底板820位于电芯组810的下侧，连接组件830 位于电芯组810的上侧。在安装好之后的紧凑结构中，电芯组810的下侧与底板821相抵接，电芯组810的上侧与连接组件830的下表面相抵接。
需要说明的是，本发明对于连接组件的结构特征和连接方式等不作具体限定或特殊要求，示例性地，连接组件830包括连接板831与采样单元832，如图8所示，连接板831与电芯模块进行螺栓连接、焊接或扣合连接，采样单元832则电性连接电芯，本领域技术人员可根据实际情况或所需电池模组的结构，对连接组件进行选择，因此现有技术中已公开或新技术中未公开的其他形式的连接组件同样可以用于本发明中。
图8中所示的连接板831与图5中所示的连接片520的作用类似，结构不同。
在另一个具体实施方式中，本申请提供了一种电池包，包括一个具体实施方式提供的电池模组，电池包还包括设置于电池模组外壁的箱体。进一步的，电池模组800的紧固件穿过固定底板820的固定孔并与箱体连接，实现电池模组800与箱体的可拆卸固定。
在图8-图13所示的实施例中，电池包的箱体相当于图1-图7所示实施例中的电池包本体210，作用相同，结构可以不同。
需要说明的是，本发明对于箱体的结构不作具体限定或特殊要求，本领域技术人员可根据具体工况进行选择，示例性地，可采用长方体结构，本发明的电池包中的电池模组的固定不依赖粘接，因此对于箱体与电池模组的接触面的尺寸，无需作具体限定，箱体上的特征可根据本领域技术人员实际情况进行相应地改进，便于使用钣金冲压的形式来成型，降低了箱体的制造成本。
在另一个具体实施方式中，本发明提供了一种电动车，该电动车采用一个具体实施方式提供的电池包。
需要说明的是，本发明提供的紧固件用于电池模组的组装，本领域技术人员应该理解的是，现有电池模组的组装通常采用粘接的方式，导致电池模组的强度较低，而本发明中的隔板的中空腔室内通过插入紧固件，无需依靠胶水的连接，就能够实现电池模组的组装，有利于提高电池模组的结构强度和电池模组的成组率。
实施例二中具体包括实施例1-3，下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
实施例1
图12是本申请一实施例的电池模组的部分结构示意图。
本实施例中提供了一种电池包，包括电池模组与套设于电池模组外壁的箱体，其中电池模组包括固定底板820、电芯组810和连接组件830，电芯组810位于固定底板820内，且电芯组810远离固定底板820一侧设置连接组件830。
结合图9、图10、图12所示，电芯组810的两侧分别设有端板930，电芯组810包括并排设置的两组电芯组811、812，每一组电芯组811、812中排列有十七个电芯813，其两个电芯组811、812之间设置有间隔板910，间隔板910垂直于端板930，间隔板910包括十七个阻隔片911，相邻的两个阻隔片911之间设置有插柱，插柱包括本体921以及设置于本体921外壁的外抵接层922。其中，插柱为铝合金制成，阻隔片11为塑料材质，外抵接层922为绝缘泡棉。
本体921内部开设贯通的内腔体923，本体921的一端设置有支撑平台924。本体921为空心圆柱体结构，本体921的直径大于阻隔片11的厚度，支撑平台924为表面开设通孔圆盘结构，支撑平台924的半径大于本体921横截面的半径。电芯813包括铝壳与设置于铝壳内的卷绕内芯，铝壳靠近本体921的一面为弧形面，间隔板910的阻隔片11紧贴壳体的外壁，支撑平台924位于铝壳上方。
固定底板820包括底板821，底板821的两侧分别竖立设置有立板822，间隔板910的本体921远离支撑平台924的一端靠近底板821设置。底板821表面设有一排固定孔823，间隔板910还包括十六个紧固件，将紧固件分别插入间隔板910的内腔体923内并穿过固定孔823，实现电芯组810与固定底板820的连接。底板823支撑电芯组810，立板822分别紧贴于电芯组810的两侧。
实施例2
图13是本申请一实施例的电池模组的部分结构示意图。
本实施例中提供了一种电池包，包括电池模组与套设于电池模组外壁的箱体，其中电池模组包括固定底板820、电芯组840和连接组件830，电芯组840位于固定底板820内，且电芯组840远离固定底板820一侧设置连接组件830。
结合图9、图10、图13所示，电池模组包括电芯组840，电芯组840的两侧分别设有端板930，电芯组840包括并排设置的十一个电芯组841，每个电芯组841包括依次连接的三个电芯813，相邻的两个电芯组841之间设置有间隔板910，总共十个间隔板910，每个间隔板910均与端板930平行，每一个 间隔板910包括三个阻隔片911，相邻的两个阻隔片911之间设置有插柱，插柱包括本体921以及设置于本体921外壁的外抵接层922。其中，插柱为铁合金制成，阻隔片911为塑料材质，外抵接层922为气凝胶毡。
本体921内部开设贯通的内腔体923，本体921的一端设置有支撑平台924。本体921为空心圆柱体结构，本体921的直径大于阻隔片911的厚度，支撑平台924为表面开设通孔圆盘结构，支撑平台924的半径大于本体921的半径。电芯813包括壳体与设置于钢壳内的卷绕内芯，钢壳靠近间隔板910的本体921的一面为弧形面间隔板910的阻隔片911紧贴钢壳的外壁，支撑平台924位于钢壳上方。
固定底板820包括底板821，底板821的两侧分别竖立设置有立板822，间隔板910的本体921远离支撑平台924的一端靠近底板821设置。底板821表面设有十排固定孔823，间隔板910还包括二十个紧固件，将紧固件分别插入间隔板910内腔体923内并穿过固定孔，实现电芯组840与固定底板820的连接。底板821支撑电芯组840，立板822分别紧贴于电芯组840的两侧。
实施例3
实施例3与实施例2的区别在于，插柱为不锈钢制成，阻隔片911为塑料材质，外抵接层922为PP材料制得。实施例3的其他部分和实施例2相同，可以参考关于实施例2的说明内容。
本申请提供的电池模组具有较高成组率，集成度高，在不影响当前体积利用率的前提下，间隔板910的设置增加了电池模组内部的固定点数量，增加了电池模组的机械连接强度，提高电池模组的体积的同时，使得电池模组的固定不依靠胶水的连接，解决了当前高集成电池包内的维护问题，提高了电池模组的安全性能，具有结构强度高，整体性和稳定性强的特点。
本申请提供的电池包在不影响当前体积利用率的前提下，增加电池模组内部的固定点数量，通过多点与箱体连接的形式，增加电池模组与箱体的机械连接强度，提高电池模组体积的同时，不依靠胶水与箱体连接，解决了当前高集成电池包内的维护问题。
在图8-图13所示的实施例中，间隔板910也被称为隔板，内腔体923也被称为中空腔室，外抵接层922也被称为绝缘层，插柱也被称为承压件，每个电芯组811、812也被称为电芯模块。
实施例三
如图14所示为电池模组及其电池包的结构示意图，如图15所示为电池模组的结构示意图，如图16所示为电池模组的爆炸示意图，包括电芯组1410、端板1420以及间隔板1430，电芯组1410包括多个具有充放电功能的电芯1411，多个电芯1411排列设置为电芯组1410。
如图1所示也是电芯1411的结构示意图，如图7所示也为电芯1411的结构示意图。参考图7，电芯1411包括壳体710和内卷心720，内卷心720设置在壳体710内，内卷心720采用卷绕结构设置，壳体710采用圆角结构设置。电芯1411通过圆角结构的壳体710相互接触设置。
图17是本申请一实施例的电池模组中的间隔板的结构示意图。参考图17所示，插柱1710设置在相邻的壳体710圆角结构接触形成的间隙内，从而能够保留一定的内部空间，用于固定组件的布置。在本实施例中，电芯1411为方壳电芯。电芯组1410外设有进行长度方向整形的绑带1510，绑带1510环绕电芯组1410、端板1420设置。
参考图15所示，其中标示出了相互垂直的第一方向D1和第二方向D2，电芯1411具有沿第一方向D1延伸的宽度，多个电芯1411沿第一方向D1排列形成电芯组1410，间隔板1430沿第一方向D1延伸。
如图17所示为间隔板1430的结构示意图，电芯组1410与相邻电芯组1410之间设有间隔板1430，间隔板1430上均匀间隔设置多个插柱1710，相邻插柱1710之间的距离对应电芯1411的宽度设置，电芯1411固定设置在插柱1710之间。
如图17和图18所示，间隔板1430上设有翻边板1720和变形区1730，翻边板1720与插柱1710相互垂直设置，翻边板1720凸出于间隔板1430设置，且翻边板1720与电芯组1410的上端面接触设置，变形区1730设置在间隔板1430的端部，翻边板1720上开设有安装孔1721，插柱1710内开设有通孔，安装孔1721对应通孔设置。
图18所示为端板1420的结构示意图。图21所示为图18的局部放大图。
如图16所示，端板1420分别设置在电芯组1410的两端，端板1420通过互锁机构与间隔板1430单向锁止设置。如图18所示，端板1420上设有限位槽1421，限位槽1421一侧开设有对应间隔板1430设置的让位孔1422，间隔板1430上的变形区1730通过让位孔1422固定至限位槽1421中构成互锁机构。
如图21所示，限位槽1421内设有限位块1423和限位凹槽1424，限位块 1423与限位凹槽1424相互对应设置在限位槽1421两侧，限位块1423与限位凹槽1424纵向间隔设置在限位槽1421内。
图19所示为变形区1730的结构示意图，如图20所示为变形区1730的俯视示意图。参考图19所示，变形区1730包括开槽1731和弹片1732，开槽1731纵向且均匀间隔开设在端板1420的端部，开槽1731靠近端板1420的一端内侧设有第一槽壁，弹片1732的一端固定设置在第一槽壁上，弹片1732的另一端凸出间隔板1430的板身设置。变形区1730通过让位孔1422压缩弹片1732移动至限位槽1421内，变形区1730通过弹片1732回弹自锁在限位凹槽1424中而与端板1420固定设置。
参考图14所示，本申请还提供了一种电池包，采用的电池模组包括箱体1440，箱体1440内设有支撑梁1442，支撑梁1442设置在相邻的电池模组之间，电池模组通过固定件1441固定设置在箱体1440内，固定件1441通过安装孔1721贯穿插柱1710设置。在本实施例中，采用螺栓作为固定件1441。
比较图14所示的实施例和图2所示的实施例，箱体1440相当于电池包本体210。
在图14-图21所示的实施例中，插柱1710也被称为定位柱，限位块1423也被称为Y向限位块，限位凹槽1424也被称为X向限位凹槽。
设置实施例三的电池模组和电池包的过程包括：将一组电芯组1410中的每一个电芯1411，对应设置在间隔板1430一侧的插柱1710之间，并将电芯1411与间隔板1430之间进行粘接，粘接的方式可以是通过胶水粘接或者胶带粘接，或者其他方式粘接。在完成间隔板1430一侧电芯组1410的设置后，将间隔板1430另一侧的电芯组1410以同样的方法进行固定。在电芯组1410的两端设置端板1420，如图18中箭头方向所示，将端板1420与间隔板1430相互固定，让位孔1422先使变形区1730的弹片1732压缩变形，在变形区1730通过让位孔1422之后，开槽1731内的弹片1732回弹，与限位凹槽1424相配合，完成端板1420与中部间隔板1430之间的X向自锁。在整个电池模组组成后，通过绑带1510进行长度方向整形。在整形完成后，将螺栓通过安装孔1721、插柱1710固定在箱体1440内，在每个电池模组周围有支撑梁1442，支撑梁1442与箱体1440外框相连，保证电池包与整车连接的刚性。
上文已对基本概念做了描述，显然，对于本领域技术人员来说，上述发明披露仅仅作为示例，而并不构成对本申请的限定。虽然此处并没有明确说明， 本领域技术人员可能会对本申请进行各种修改、改进和修正。该类修改、改进和修正在本申请中被建议，所以该类修改、改进、修正仍属于本申请示范实施例的精神和范围。

Claims (27)

  1. 一种电池模组，包括多个电芯，其特征在于，包括固定组件，所述固定组件包括多个插柱，所述插柱夹设在多个所述电芯之间。
  2. 如权利要求1所述的电池模组，其特征在于，所述电芯的棱边设置有圆角结构，所述插柱与所述圆角结构相抵接。
  3. 如权利要求2所述的电池模组，其特征在于，所述插柱包括内腔体和外抵接层，所述内腔体设置在所述外抵接层内；所述外抵接层与所述电芯相抵接。
  4. 如权利要求3所述的电池模组，其特征在于，所述外抵接层为绝缘层。
  5. 如权利要求1或2所述的电池模组，其特征在于，所述插柱包括本体，所述本体包括内腔体和外抵接层，所述内腔体贯通所述本体，所述电池模组还包括紧固件，所述紧固件插设在所述内腔体中，所述紧固件用于固定所述插柱。
  6. 如权利要求5所述的电池模组，其特征在于，所述本体的顶部设置有用于容纳所述紧固件头部的支撑平台，所述支撑平台的宽度大于所述本体的直径。
  7. 如权利要求2所述的电池模组，其特征在于，多个所述插柱相连接形成固定组。
  8. 如权利要求7所述的电池模组，其特征在于，多个所述固定组连接设置。
  9. 如权利要求8所述的电池模组，其特征在于，所述固定组上设置有多个连接片，多个所述固定组通过所述连接片相连接。
  10. 如权利要求5所述的电池模组，其特征在于，还包括电芯组和间隔板，每个所述电芯组包括多个电芯，每个所述电芯具有沿第一方向延伸的宽度，所述多个电芯沿第一方向排列形成所述电芯组，所述间隔板设置在相邻的所述电芯组之间，所述间隔板沿所述第一方向延伸，多个所述插柱均匀间隔地设置在所述间隔板上，相邻的所述插柱之间的距离对应于所述电芯的宽度，所述电芯固定设置在相邻的所述插柱之间。
  11. 如权利要求10所述的电池模组，其特征在于，所述间隔板上设置有翻边板和变形区，所述翻边板与所述插柱相互垂直设置，所述翻边板凸出于所述间隔板设置，所述翻边板上开设有安装孔，所述安装孔对应所述内腔体设置；所述变形区设置在所述间隔板的端部。
  12. 如权利要求11所述的电池模组，其特征在于，还包括端板，所述端板设置在所述电芯组的两端，所述端板通过互锁机构与所述间隔板单向锁止。
  13. 如权利要求12所述的电池模组，其特征在于，所述间隔板垂直或平行于所述端板。
  14. 如权利要求12所述的电池模组，其特征在于，所述端板上设置有限位槽，所述限位槽的一侧设置有让位孔，所述变形区通过所述让位孔固定至所述限位槽中以构成所述互锁机构。
  15. 如权利要求14所述的电池模组，其特征在于，所述限位槽内部设置有限位块和限位凹槽，所述限位块和所述限位凹槽相互对应地设置在所述限位槽的两侧，所述限位块和所述限位凹槽沿第二方向间隔设置，所述第二方向是所述端板的竖立方向。
  16. 如权利要求15所述的电池模组，其特征在于，所述变形区包括开槽和弹片，所述开槽沿所述第二方向均匀间隔地设置在所述间隔板的端部，所述开槽靠近端板的一端内侧设有第一槽壁，所述弹片的一端固定设置在所述第一槽壁上，所述弹片的另一端凸出所述间隔板的板身设置。
  17. 如权利要求16所述的电池模组，其特征在于，所述变形区通过所述让位孔压缩所述弹片移动至所述限位槽内，所述变形区通过所述弹片回弹自锁在所述限位凹槽中而与所述端板固定设置。
  18. 如权利要求10所述的电池模组，其特征在于，所述电芯包括壳体和内卷心，所述内卷心设置在所述壳体内，所述内卷心采用卷绕结构设置，所述壳体包括圆角结构。
  19. 如权利要求18所述的电池模组，其特征在于，相邻的所述电芯的所述壳体通过所述圆角结构相接触，所述插柱设置在相邻的所述壳体的所述圆角结构接触形成的空隙内。
  20. 如权利要求18所述的电池模组，其特征在于，所述间隔板紧贴所述壳体的外壁，所述间隔板沿其竖立方向的高度不小于所述壳体的高度。
  21. 如权利要求12所述的电池模组，其特征在于，所述电芯组外围设有绑带，所述绑带环绕所述电芯组和所述端板，所述绑带用于沿所述第一方向对所述电芯组进行整形。
  22. 如权利要求1所述的电池模组，其特征在于，所述电芯包括方壳电芯。
  23. 如权利要求10所述的电池模组，其特征在于，还包括固定底板，所述电 芯组可拆卸地固定于所述固定底板的表面；所述固定底板的外缘向靠近所述电芯组的方向弯折形成容纳腔，所述电芯组位于所述容纳腔内；所述固定底板的表面开设有固定孔，所述紧固件还穿过所述固定孔以固定所述电池模组。
  24. 如权利要求23所述的电池模组，其特征在于，还包括连接组件，所述连接组件设置于所述电芯组远离所述固定底板的一侧，所述连接组件用于实现多个所述电芯之间的串并联。
  25. 一种电池包，包括如权利要求1-24任一项所述的电池模组，其特征在于，包括电池包本体，所述多个电芯设置在所述电池包本体内。
  26. 如权利要求25所述的电池包，其特征在于，所述电池包本体的内侧壁上设置有限位柱，所述限位柱与所述电芯、所述电池包本体的内侧壁相抵接。
  27. 一种电动车，其特征在于，包括如权利要求25-26任一项所述的电池包。
PCT/CN2022/100922 2021-07-15 2022-06-23 电池模组、电池包和电动车 WO2023284518A1 (zh)

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