WO2021058028A1 - 电池模组单元、电池模组、储能系统及电动车辆 - Google Patents

电池模组单元、电池模组、储能系统及电动车辆 Download PDF

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Publication number
WO2021058028A1
WO2021058028A1 PCT/CN2020/118847 CN2020118847W WO2021058028A1 WO 2021058028 A1 WO2021058028 A1 WO 2021058028A1 CN 2020118847 W CN2020118847 W CN 2020118847W WO 2021058028 A1 WO2021058028 A1 WO 2021058028A1
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WO
WIPO (PCT)
Prior art keywords
bracket
battery module
module unit
brackets
boss
Prior art date
Application number
PCT/CN2020/118847
Other languages
English (en)
French (fr)
Inventor
吴明杰
王昕�
Original Assignee
东莞新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东莞新能源科技有限公司 filed Critical 东莞新能源科技有限公司
Priority to AU2020353033A priority Critical patent/AU2020353033B2/en
Priority to EP20866938.2A priority patent/EP3846243A4/en
Priority to US17/281,470 priority patent/US20210359369A1/en
Priority to JP2021516891A priority patent/JP7423611B2/ja
Publication of WO2021058028A1 publication Critical patent/WO2021058028A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • 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
    • H01M50/242—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 against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/262—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
    • H01M50/269—Mechanical means for varying the arrangement of batteries or cells for different uses, e.g. for changing the number of batteries or for switching between series and parallel wiring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • This application relates to the field of batteries, in particular to battery module units and battery modules, energy storage systems and electric vehicles containing the battery module units.
  • a battery module unit includes:
  • the plurality of first supports includes at least one first fixed support; the first fixed support is arranged between the other first supports,
  • the cells on one side of the first fixing bracket form a first cell group
  • the cells on the other side of the first fixing bracket form a second cell group
  • the connecting structure is arranged at one end of the plurality of bracket bodies
  • a fixing member is provided on the bracket body of the first fixing bracket, and the fixing member of the first fixing bracket is fixed to the connecting structural member so that the connecting structural member and the first fixing bracket are in a first direction Fixed, wherein the first direction is a stacking direction of a plurality of first supports;
  • the first battery cell group and the second battery cell group are related to the center axis of symmetry of the first fixing bracket, or the first battery cell group and the second battery cell group are related to a plurality of first fixing brackets
  • the symmetry center of the axis is symmetrical.
  • the number of cells in the first battery cell group and the second battery cell group are the same.
  • the fixing member includes a first boss
  • the side wall of the connecting structure is provided with a first positioning groove corresponding to the first boss, and the first positioning groove is matched and fixed with the first boss.
  • the fixing member includes a second boss
  • the second boss and the first boss are respectively located on both sides of the bracket body
  • the side of the connecting structure away from the first positioning groove is provided with a second positioning groove corresponding to the second boss; the second positioning groove is matched and fixed with the second boss.
  • each of the first brackets includes the fixing member, the fixing member includes a first boss and a buckle, and the first boss and the buckle are respectively located at the connection On both sides of the structural member; the first boss is against the connecting structural member, and the buckle is buckled to the connecting structural member.
  • the buckle includes two intersecting abutting surfaces
  • One said resisting surface and said bracket body oppose to resist on opposite sides of said connecting structure
  • the other abutting surface is opposed to the first boss and abuts on two opposite sides of the connecting structure.
  • the battery module unit further includes two second brackets, the two second brackets are provided on both sides of the plurality of first brackets along the first direction, and the second The battery core is accommodated between the bracket and the adjacent first bracket;
  • the second bracket is provided with a protruding part
  • Ear hooks are respectively provided on both sides of the connecting structural member along the first direction, and the two ear hooks are respectively fixed to the protrusions of the second bracket.
  • the bracket body of the first bracket is provided with at least one set of card slots and embedding portions on both sides of the first direction;
  • the card slot of the first bracket can be fitted into the embedding portion of another adjacent first bracket.
  • the side walls of the bracket body located on both sides of the connecting structure are symmetrically provided with the card slot and the embedding portion, and the card slot and the wall located on both sides of the side wall are symmetrical.
  • the embedding parts are symmetrically distributed; among the two adjacent first brackets, one of the first brackets is installed by rotating 180° in a plane perpendicular to the first direction relative to the other of the first brackets.
  • each of the first brackets includes the fixing member, and the fixing member includes a buckle;
  • the buckle includes two intersecting abutting surfaces; one of the abutting surfaces is opposed to the bracket body and abuts on opposite sides of the connecting structure;
  • the other abutting surfaces of the two buckles located on both sides of the connecting structure member oppose each other and resist opposite sides of the connecting structure member.
  • the battery module unit further includes a bus bar for connecting the tabs of the battery cell, and the bus bar is fixed to the connecting structural member.
  • At least one of the first brackets is provided with a positioning pin, and the connecting structural member is correspondingly provided with a positioning hole;
  • the positioning pin can pass through the corresponding positioning hole.
  • the positioning pin can move in the positioning hole along the first direction by a set distance.
  • a collection terminal is further provided on the bus bar, and the collection terminal is located on one side of the bus bar.
  • the bus bar and the fixing bracket adopt a hot melt connection, an adhesive connection or a threaded connection.
  • the present application also proposes a battery module, including at least one of the above-mentioned battery module units and a strap, the strap being arranged outside at least one of the battery module units to fix the battery module unit.
  • This application also proposes an energy storage system, which includes the above-mentioned battery module unit or battery module.
  • the application also proposes an electric vehicle, which includes the above-mentioned battery module unit or battery module.
  • the above-mentioned battery module unit is fixed to the connecting structural member by at least one first fixing bracket among the plurality of first brackets, and the remaining first brackets can move in the first direction under the action of the expansion of the battery core,
  • the first battery cell group and the second battery cell group on both sides of the first fixing bracket are symmetrical about the symmetry center axis of the first fixing bracket or a plurality of the first fixing brackets, so that the first battery The cells of the core group and the second cell group expand uniformly along the first direction.
  • Fig. 1 is a schematic structural diagram of an energy storage system according to a first embodiment of the present application.
  • Fig. 2 is a schematic structural diagram of the energy storage system in Fig. 1 from another perspective.
  • FIG. 3 is a schematic diagram of the structure of the battery module in FIG. 1.
  • FIG. 4 is an exploded schematic diagram of the battery module unit in FIG. 3 with the connecting structure removed.
  • FIG. 5 is an exploded view of the structure of two adjacent first brackets and second brackets of the battery module unit in FIG. 3.
  • FIG. 6 is a schematic diagram of the structure of the battery module unit in FIG. 3 from another perspective.
  • Fig. 7 is a schematic structural diagram of the first bracket in Fig. 3 in another embodiment.
  • FIG. 8 is a schematic structural diagram of a second bracket of the battery module unit in FIG. 3.
  • FIG. 9 is a schematic structural diagram of the energy storage system in FIG. 1 from another perspective.
  • FIG. 10 is a schematic structural diagram of another second bracket of the battery module unit in FIG. 9.
  • FIG. 11 is a schematic diagram of the structure of the battery module in the second embodiment.
  • FIG. 12 is a schematic diagram of the structure of the battery module in the third embodiment.
  • the first battery cell group 105 The first battery cell group 105
  • the first fixing bracket 2a The first fixing bracket 2a
  • the first boss 231, 231a The first boss 231, 231a
  • the second boss 233,233a The second boss 233,233a
  • the first direction X is a first direction X
  • An energy storage system 300 includes a strap 301 and a plurality of battery modules 200.
  • the strap 301 is arranged outside the plurality of battery modules 200 and makes the plurality of battery modules 200 abut and fix, but is not limited thereto.
  • the number of the battery module 200 is four, but it is not limited thereto.
  • the battery module 200 includes at least one battery module unit 100. In the first embodiment, the number of the battery module unit 100 is one, but it is not limited to this. It can be understood that in other embodiments, the battery module 200 may also include two or other numbers of battery module units 100.
  • the battery module unit 100 includes a first end 101 and a second end 103 oppositely arranged, a first battery cell group 105, a second battery cell group 107, and a connecting structure. 1 and a plurality of first brackets 2 stacked in sequence.
  • the first direction X is defined as the stacking direction of the plurality of first brackets 2.
  • the first direction X is the direction of the second end 103 toward the first end 101, but it is not limited to this.
  • the first bracket 2 includes a bracket body 21 and a fixing member 23 provided on the bracket body 21.
  • the first battery cell group 105 and the second battery cell group 107 respectively include a plurality of battery cells 1001 arranged in sequence along the first direction X.
  • the connecting structure 1 is arranged at one end of the plurality of bracket bodies 21.
  • the plurality of first brackets 2 includes a first fixed bracket 2a, but it is not limited thereto.
  • the first fixing bracket 2a is fixed to the connecting structural member 1 so that the connecting structural member 1 and the first fixing bracket 2a are fixed in the first direction X.
  • the first fixing bracket 2a is located at the center axis N of symmetry of the plurality of first brackets 2 in the first direction X, and the center axis N of symmetry is perpendicular to the first direction X.
  • the center axis of symmetry of the first fixing bracket 2a in the first direction X is collinear with the center axis N of symmetry, but it is not limited thereto.
  • the multiple cells 1001 on one side of the first fixed bracket 2a form a first cell group 105, and the multiple cells 1001 on the other side of the first fixed bracket 2a form a second cell group 107.
  • the first battery cell group 105 is disposed between the first end 101 and one side end of the first fixing bracket 2a; the second battery cell group 107 is disposed on the second end 103 and Between the other side ends of the first fixing bracket 2a.
  • the first battery cell group 105 and the second battery cell group 107 are symmetrical about the symmetry center axis of the first fixing bracket 2a.
  • two or other numbers of the battery cores 1001 can also be accommodated between two adjacent bracket bodies 21.
  • the stacking direction of the plurality of first brackets 2 is not limited to the second end 103 facing the first end 101. It is understood that, in other embodiments, the first direction X may also be the first end 101 facing The direction of the second end 103.
  • the battery module unit 100 further includes two second brackets 3.
  • the two second brackets 3 are provided on both sides of the plurality of first brackets 2 along the first direction X.
  • the battery cell 1001 is accommodated between the second bracket 3 and the adjacent first bracket 2.
  • the first to third first brackets 2 located on the side of the first fixed bracket 2a facing the first end 101 and those located at the first end 101
  • the four battery cells 1001 fixed by the second bracket 3 form a first battery cell group 105.
  • the fifth to seventh cells on the other side of the first fixed bracket 2a are located on the first bracket 2 and the other
  • the four battery cells 1001 fixed by the second bracket 3 form a second battery cell group 107.
  • the battery module unit 100 may also omit the two second brackets 3, and the seven first brackets 2 are located on the side of the first fixing bracket 2a.
  • the first to the third three battery cells 1001 fixed by the first bracket 2 form a first battery cell group 105, and the fifth to the seventh battery cells are located on the other side of the first fixing bracket 2a.
  • the three battery cells 1001 fixed by the first bracket 2 form a second battery cell group 107.
  • the first fixing bracket 2a is provided with a first boss 231a.
  • the connecting structural member 1 is provided with a first positioning groove 11 corresponding to the first boss 231a.
  • the number of the first positioning grooves 11 and the number of the first bosses 231a are equal.
  • the first boss 231a is inserted into the first positioning groove 11 to be positioned in the first direction X.
  • the six first brackets 2 except the first fixed bracket 2a can respectively move along the connecting structure 1 when the cell 1001 expands and deforms, and are located on both sides of the first fixed bracket 2a.
  • the total movable distances of the three first supports 2 are equal, and the cumulative expansion distances of the plurality of battery cells 1001 on both sides of the first fixed support 2a are equal, so that the first battery cell group 105 and the The second battery cell group 107 expands uniformly.
  • the first fixing bracket 2a is further provided with a second boss 233a.
  • the second boss 233a and the first boss 231a are respectively located on two sides of the bracket body 21.
  • the side of the connecting structure 1 facing away from the first positioning groove 11 is provided with the second positioning groove 11 a corresponding to the second boss 233 a.
  • the second boss 233a is inserted into the second positioning groove 11a to be positioned in the first direction X, and the connection strength between the first fixing bracket 2a and the connecting structure 1 is improved.
  • the fixing member 23 abuts against the side wall of the connecting structural member 1, so that the connecting structural member 1 and the first bracket 2 are in the second direction Y and the third direction Z Positioning.
  • the first direction X, the second direction Y and the third direction Z are respectively perpendicular.
  • the second direction Y is the direction in which the bracket body 21 faces the connecting structure 1, but is not limited thereto.
  • the bracket body 21 of the first bracket 2 is provided with at least one set of clamping slots 24 and embedding portions 25 on both sides along the first direction X, respectively.
  • the slot 24 of the first bracket 2 can be fitted into the embedding portion 25 of another adjacent first bracket 2, and a plurality of the first brackets 2 are arranged in the second direction Y and the Positioning in the third direction Z.
  • the side walls 211 of the bracket body 21 located on both sides of the connecting structure 1 are symmetrically provided with the card slots 24 and the embedding parts 25.
  • Each side of the side wall 211 is provided with two sets of the card slots 24 and the embedding portion 25, and the card slots 24 and the embedding portion 25 on both sides of the side wall 211 are symmetrically distributed, but Not limited to this.
  • one of the first bracket 2 and the first fixed bracket 2a is perpendicular to the other of the first bracket 2 and the first fixed bracket 2a.
  • the installation is rotated by 180° in the plane of the first direction X, so that the plurality of first brackets 2 are against each other and positioned in the second direction Y and the third direction Z respectively.
  • the embedding portion 25 of the first bracket 2 can be inserted into the slot 24 of the adjacent first fixing bracket 2a, and abut the bottom wall 241 of the slot 24; the first fixing The embedding portion 25 of the bracket 2a is inserted into the slot 24 of the first bracket 2 and abuts against the bottom wall 241 of the slot 24.
  • the first bracket 2 and the first fixing bracket 2a are respectively mounted on the bottom wall 241 of the slot 24. Positioning in the second direction Y and the third direction Z.
  • the side wall 211 of the bracket body 21 is provided with at least one set of grooves 24a and embedding portions 25a on both sides of the two ends.
  • the slot 24a of the first bracket 2 can be fitted into the embedding portion 25a of another adjacent first bracket 2, and a plurality of the first brackets 2 and the first fixing brackets 2a can be inserted into each other. Positioning in the second direction Y and the third direction Z. It can be understood that, in other embodiments, the card slot 24 and the embedding portion 25, and/or the card slot 24a and the embedding portion 25a may also be omitted.
  • only one set of the card slots 24 and the embedding portion 25 are provided on one side of the side wall 211, and the card slots 24 and the inserting portion 25 are located on both sides of the side wall 211.
  • the embedded parts 25 are symmetrically distributed, as shown in FIGS. 7 and 8.
  • One side of the side wall 211 may also be provided with three groups or other numbers of the card slots 24 and the embedding portions 25, as long as the card slots 24 of the first bracket 2 are connected to the adjacent other first bracket.
  • the fitting part 25 of the holder 2 may be fitted.
  • the second bracket 3 is corresponding to the slot 24, 24a and the embedding portion 25, 25a of the first bracket 2 respectively provided with the embedding portion 35, 35a and the slot 34, 34a so that the second bracket 3 and the first bracket 2 are respectively positioned in the second direction Y and the third direction Z.
  • the fixing member 23 includes a first boss 231 and a buckle 235.
  • the first boss 231 is provided on a side of the bracket body 21 facing the connecting structure 1.
  • the buckle 235 includes two intersecting abutting surfaces 2351.
  • One of the abutting surfaces 2351 and the bracket body 21 are opposed to the opposite sides of the connecting structural member 1, so that the first bracket 2, the first fixing bracket 2a, and the connecting structural member 1 is positioned along the second direction Y.
  • the other resisting surface 2351 and the first boss 231 oppose each other and resist on opposite sides of the connecting structural member 1, so that a plurality of the first bracket 2, the first fixing bracket 2a, and the The connecting structure 1 is positioned along the third direction Z.
  • the second boss 233a of the first fixing bracket 2a and the second positioning groove 11a of the connecting structure 1 can also be omitted.
  • the second boss 233 of the first bracket 2 and/or the buckle 235 of the first fixing bracket 2a can also be omitted.
  • the second bracket 3 is provided with two opposite protruding portions 31 along the second direction Y.
  • the two protruding portions 31 abut against the two sides of the connecting structure 1 respectively.
  • the connecting structural member 1 is provided with ear hooks 12 on both sides along the first direction X, respectively.
  • the two ear hooks 12 respectively abut the outer sides of the two protruding parts 31 of the second bracket 3, and make a plurality of the first bracket 2, the first fixing bracket 2a, and the two first brackets 2a.
  • the two brackets 3 respectively hold and fix the corresponding battery core 1001.
  • the connecting structure 1 is injection molded, but it is not limited to this.
  • the ear hook 12 can allow the first bracket 2 and the second bracket 3 to move in the first direction X when the battery cell 1001 expands to a certain extent, so that the convexity of the second bracket 3
  • the outlet portion 31 is separated from the ear hook 12 to balance the internal pressure of the plurality of battery cells 1001.
  • each of the first bracket 2 and the first fixing bracket 2a have the same structure, but it is not limited thereto.
  • the fixing member 23 of the first bracket 2 includes a first boss 231, a second boss 233 and a buckle 235.
  • the first boss 231 has the same structure as the first boss 231a
  • the second boss 233 has the same structure as the second boss 233a.
  • the first bracket 2 and the first fixing bracket 2a are symmetrically provided with the first bosses 231/231a, the second bosses 233/233a, and the buckles 235 along both sides of the second direction Y .
  • the first boss 231/231a is located at the middle of the bracket body 21 along the first direction X, and the second boss 233/233a is along the first direction.
  • X is offset on the bracket body 21 relative to the first boss 231/231a.
  • the first positioning groove 11 of the connecting structural member 1 corresponding to the first boss 231 a is located in the middle of the connecting structural member 1.
  • the second positioning groove 11a of the connecting structure 1 corresponding to the second boss 233a is offset relative to the first positioning groove 11 along the first direction X.
  • the second bosses 233/233a and the buckles 235 of the first bracket 2 and the first fixing bracket 2a are sequentially arranged along the second direction Y.
  • the first bracket 2 and the first fixing bracket 2a are injection molded, but not limited thereto.
  • the first bracket 2 and the first boss 231/231a, the second boss 233/233a and the buckle 235 of the first bracket 2a and the first fixing bracket 2a adopt an offset design to facilitate the manufacturing process, and The connection strength between the first bracket 2 and the first fixing bracket 2a and the connecting structure 1 is improved.
  • the first boss 231/231a, the second boss 233/233a, and the buckle 235 may be located on the bracket body 21 along the first direction. Any position of X, as long as the first boss 231/231a and the second boss 233/233a are located on opposite sides of the connecting structure 1. Please refer to FIG. 1 and FIG. 3 at the same time.
  • the connecting structural member 1 is provided with two bus bars 13 and one bus bar 14 to connect the tabs of the battery cell 1001.
  • the two bus bars 13 are located on both sides of the bus bar 14.
  • the bus bar 14 is further provided with a collection terminal 15, and the collection terminal 15 is located on one side of the bus bar 13 and the bus bar 14.
  • the bus bar 13 and the bus bar 14 are respectively connected to the connecting structure 1 by heat fusion, but not less than this.
  • the bus bar 13 and the bus bar 14 respectively and the connecting structure 1 may also be connected by adhesive or threaded connection.
  • bus bar 13 and the bus bar 14 are copper bars, but not limited thereto.
  • At least one of the first brackets 2 is provided with a positioning pin 26 on one side.
  • the connecting structural member 1 is provided with a positioning hole 16 correspondingly.
  • the positioning hole 16 is located on the side of the bus bar 13 and the bus bar 14 facing the collection terminal 15, but is not limited to this.
  • the positioning pin 26 can pass through the corresponding positioning hole 16 to prevent the collection terminal 15 from being reversely installed and causing failure. It can be understood that in other embodiments, the positioning pin 26 and the positioning hole 16 may also be omitted.
  • each of the first brackets 2 is provided with a positioning pin 26 on one side.
  • the positioning pin 26 of the first fixing bracket 2a is located on the side away from the connecting structure 1.
  • the positioning hole 16 of the connecting structure member 1 corresponds to the plurality of positioning pins 26 of the plurality of first brackets 2 facing the connecting structure member 1. Since one of the two adjacent first brackets 2 is rotated by 180 degrees in a plane perpendicular to the first direction X, the number of positioning pins 26 of the plurality of first brackets facing the connecting structure 1 is greater than The sum is four. Correspondingly, the number of the positioning holes 16 of the connecting structure 1 is four.
  • the positioning hole 16 allows the positioning pin 26 of the corresponding first bracket 2 to move within the first direction X toward the first bracket 2 away from the first fixing bracket 2a by a set distance, The expansion uniformity of the battery core 1001 between the two first brackets 2 and the first fixed bracket 2a is further improved.
  • the battery module unit 100 further includes a connecting structure 4.
  • the connecting structural member 4 is arranged on a side of the plurality of first brackets 2 facing away from the connecting structural member 1.
  • the buckle 235 is buckled to the connecting structure 4 so that the plurality of first brackets 2 and the first fixing brackets 2a and the connecting structure 4 are respectively in the second direction Y and the Positioning in the third direction Z.
  • Two ear hooks 42 are respectively provided on both sides of the connecting structural member 4. Each two ear hooks 42 respectively abut against the outer sides of the two protruding parts 31 of the second bracket 3, and make a plurality of the first bracket 2, the first fixing bracket 2a, and two The two second brackets 3 respectively hold and fix the battery core 1001.
  • the connecting structural member 4 and the connecting structural member 1 are located on both sides of the plurality of first brackets 2, the first fixing brackets 2a, and the two second brackets 3, respectively, which improves the battery module unit. It can be understood that in other embodiments, the connecting structure 4 may also be omitted.
  • the energy storage system 300 further includes a plurality of connecting frames 303. Two ends of each connecting frame 303 are respectively connected to two adjacent battery modules 200. Specifically, threaded holes 17 are provided on both sides of the connecting structure 1.
  • the connecting frame 303 is threadedly connected to the threaded hole 17 by a fastener 305, and the connecting frame 303 is attached to the bus bar 14.
  • the connecting frame 303 is roughly a U-shaped sheet structure.
  • the connecting frame 303 can extend and elastically deform in the first direction X to allow two adjacent battery modules 200 to move in the first direction X. It can be understood that, in other embodiments, the connecting frame 303 may also be omitted.
  • the energy storage system 300 may also omit the strap 301, and multiple battery modules 200 are connected and fixed by the connecting frame 303 or in other ways.
  • two adjacent second brackets 3 are provided with at least one set of guide holes 33 and guide posts 36 facing each other.
  • the guide post 36 can be inserted into the guide hole 33 to provide guidance in the first direction X for the installation of the two battery modules 200. It can be understood that in other embodiments, the guide hole 33 and the guide post 36 may also be omitted.
  • the strap 301 is a steel belt, but it is not limited thereto.
  • first fixing bracket 2a and the connecting structural member 1 may also be fixed by screw connection or adhesive connection.
  • the plurality of first brackets 2 other than the first fixed bracket 2a may also omit the first boss 231 and the second boss 233.
  • the first bracket 2 and the fixing member 23 of the first fixing bracket 2a include two buckles 235 disposed on the bracket body 21 opposite to each other. The two buckles 235 are located on both sides of the connecting structural member 1 and resist the connecting structural member 1 so that the first bracket 2 and the first fixing bracket 2a are connected to the connecting structural member 1 respectively. Positioning in the second direction Y and the third direction Z.
  • two adjacent first supports 2 may also adopt different structures, so that the two adjacent first supports 2 do not need to be installed by rotating 180 degrees.
  • first fixing bracket 2a may be provided with a fixing member 23 in the battery module unit 100, and the fixing member 23 only includes the first boss 231, and the second A boss 231 cooperates with the first positioning groove 11 of the connecting structural member 1 to fix the first fixing bracket 2 a to the connecting structural member 1.
  • the battery module 200 further includes another strap (not shown), and a plurality of the first brackets 2 and/or the second brackets 3 are fixed to the connecting structure 1 by using the other straps. .
  • the energy storage system 300 may also omit the strap 301, the connecting frame 303, and the fastener 305, and the energy storage system 300 includes the battery module described above. Group unit 100.
  • the structure of the battery module unit 100' is substantially the same as that of the battery module unit 100, except that the number of the first bracket 2 of the battery module unit 100' is eight;
  • the number of fixing brackets 2a is two.
  • the two first fixing brackets 2a are symmetrical about the symmetry center axis N'of the plurality of first brackets 2 in the first direction X and are adjacent to the symmetry center axis N', and the two first The central axis of symmetry of the fixing bracket 2a coincides with the central axis of symmetry N'; the two first fixing brackets 2a are respectively fixed to the connecting structural member 1; the card slots 24, 24a, 34, 34a and the embedding are omitted Parts 25, 25a, 35, 35a.
  • the two first fixing brackets 2a receive and locate one battery cell 1001.
  • the first battery cell group 105 is located between the first fixing bracket 2a and the first end 101
  • the second battery cell group 107 is located between the other first fixing bracket 2a and the second end. Between 103.
  • the first battery cell group 105 and the second battery cell group 107 are symmetrical about the symmetry center axis of the two first fixing brackets 2a.
  • the order of the two first fixing brackets 2a among the eight first brackets 2 is fourth and fifth, respectively.
  • the first fixing bracket 2a in the fourth order is the first to the third first bracket 2 on the side facing the first end 101, and one of the first fixing brackets 2a.
  • the four battery cells 1001 fixed by the two brackets 3 form a first battery cell group 105.
  • the sixth to eighth first bracket 2 and the other second bracket 3 on the other side of the first fixed bracket 2a ranked fifth are fixed
  • the four battery cells 1001 form the second battery cell group 107.
  • the two first fixing brackets 2a are arranged adjacent to each other.
  • the two first fixing brackets 2a may not be arranged adjacent to each other.
  • other first brackets are arranged between the two first fixing brackets 2a.
  • the first fixing bracket is not limited to this.
  • the first fixing bracket 2a is provided with a first boss 231a, and the connecting structural member 1 is provided with two first positioning grooves 11 corresponding to the two first fixing brackets 2a.
  • the first boss 231a can be inserted into the corresponding first positioning groove 11 to position the first fixing bracket 2a and the connecting structure 1 in the first direction X.
  • Each of the first bracket 2 and the fixing member 23 of the first fixing bracket 2 a includes a first boss 231/231 a and a buckle 235.
  • the first boss 231/231a and one of the abutting surfaces 2351 of the buckle 235 oppose each other against the two sides of the connecting structure 1, and the buckle 235 and the bracket body 21 oppose each other against On both sides of the connecting structural member 1, the first bracket 2 and the first fixing bracket 2a and the connecting structural member 1 are positioned in the second direction Y and the third direction Z, respectively.
  • the first battery cell group 105 and the second battery cell group 107 are symmetrical about the symmetry center axis of the two first fixed brackets 2, so that the three movable ones on both sides of the first fixed bracket 2a
  • the total distance moved by the first bracket 2a is equal, and the cumulative expansion distances of the battery cells 1001 on both sides of the first fixed bracket 2a are the same, so that the first battery cell group 105 and the second battery cell group 107
  • the expansion is uniform.
  • the symmetrical central axes of the two first fixing brackets 2a are the symmetrical central axes N'of the plurality of first brackets 2 in the first direction X. In other embodiments, no Limited to this.
  • each of the first bracket 2 and the first fixing bracket 2a may also be provided with a second boss 233/233a to resist the connecting structure member 1 away from the One side of the first boss 231/231a to improve the connection strength.
  • the structure of the battery module unit 100" is substantially the same as that of the battery module unit 100.
  • the difference is that the number of the first brackets 2 of the battery module unit 100" is fifteen.
  • the number of one fixing bracket 2a is three.
  • the numbers of the first battery cell group 105 and the second battery cell group 107 are two respectively.
  • the three first fixing brackets 2a are respectively located at the center axis of symmetry N" of the fifteen first brackets 2 in the first direction X, and two symmetrical about the center axis of symmetry N". Place.
  • the three first fixing brackets 2a are ranked fourth, eighth, and twelfth in the first direction X among the plurality of first brackets 2, respectively.
  • the three first fixing brackets 2a are respectively fixed to the connecting structure 1.
  • the symmetry center axis of the three first fixing brackets 2a coincides with the symmetry center axis N', which is not limited in other embodiments.
  • the first fixed bracket 2a in the fourth order is the first to the third on the side facing the first end 101 and the first bracket 2 is located at the first end 101
  • the four battery cells 1001 fixed by the second bracket 3 form a first battery cell group 105.
  • the fifth to seventh four batteries 1001 fixed by the first bracket 2 between the fourth and eighth first fixing brackets 2a form the fourth and eighth first brackets 2a.
  • the ninth to the eleventh between the eighth and twelfth two first fixed supports 2a are the four batteries 1001 fixed by the first supports 2
  • Another first battery cell group 105 is formed.
  • the first fixing bracket 2a in the twelfth order is the thirteenth to the fifteenth first bracket 2 on the side facing the second end 103 and the The four battery cells 1001 fixed to the other second bracket 3 at the two ends 103 form another second battery cell group 107.
  • the first fixing bracket 2a is provided with a first boss 231a, and the connecting structural member 1 is provided with three first positioning grooves 11 corresponding to the three first fixing brackets 2a.
  • the first boss 231a can be inserted into the corresponding first positioning groove 11 to position the first fixing bracket 2a and the connecting structure 1 in the first direction X.
  • the three first fixing brackets 2a are fixed to the connecting structural member 1, so that the total distances of the movable three first brackets 2 on both sides of each first fixing bracket 2a are equal.
  • the cumulative expansion distances of the cells 1001 of the first battery cell group 105/the second battery cell group 107 on both sides of the first fixing bracket 2a are equal, so that the first battery cell group 105 and the second battery cell group 107 Expansion uniformly.
  • the number of first supports 2 of the battery module unit 100" may also be nineteen or other numbers.
  • the number of the first supports 2 may also be The first fixing bracket 2a, which is arranged in the fifth, tenth, and fifteenth order along the first direction X, is provided with a first boss 231a to be locked into the three first positioning grooves 11 on the connecting structure 1, and The total distance of the movement of the four first supports 2 on both sides of each first fixed support 2a is equal.
  • the present application also proposes an electric vehicle (not shown) including the above-mentioned battery module unit 100 or the above-mentioned battery module 200.
  • first fixing bracket 2a of the plurality of first brackets 2 being fixed to the connecting structural member 1
  • the remaining first brackets 2 can be
  • the cell 1001 moves along the first direction X under the action of expansion, and each of the first cell group 105 and the second cell group 107 fixed on both sides of the first fixing bracket 2a of the connecting structure 1 is about
  • the plurality of first fixing brackets 2a or the plurality of first fixing brackets 2a are symmetrical in the symmetry center axis of the first direction X, so that the electric power of the first battery cell group 105 and the second battery cell group 107 is symmetrical.
  • the core 1001 expands uniformly in the first direction X.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请公开了一种电池模组单元，包括多个依次堆叠的第一支架和多个电芯，第一支架包括支架本体；第一固定支架一侧的电芯形成第一电芯组，第一固定支架另一侧的电芯形成第二电芯组，连接结构件，设置于多个支架本体的一端；第一固定支架设置有固定件，固定件固定于连接结构件的侧壁，使连接结构件和第一固定支架在第一方向固定，第一方向为多个第一支架的堆叠方向；第一电芯组和第二电芯组关于多个第一固定支架的对称中心轴或关于第一固定支架的对称中心轴对称，使电芯沿第一方向均匀膨胀。本申请还公开了一种包含该电池模组单元的电池模组、储能系统及电动车辆。

Description

电池模组单元、电池模组、储能系统及电动车辆 技术领域
本申请涉及电池领域，具体涉及电池模组单元及包含该电池模组单元的电池模组、储能系统和电动车辆。
背景技术
电池充电过程中存在阳极嵌锂现象，电池模组会产生膨胀现象，长期使用电池系统会发生不可恢复的变形膨胀，电芯膨胀不均匀会导致局部电芯的电解液缺失，轻则导致模组压差增大导致电池系统结构失效，严重则导致电芯过充或者过放，导致电解液分解使得电芯胀气失火爆炸。
发明内容
有鉴于此，有必要提供一种电池模组单元，旨在使电芯膨胀均匀。
一种电池模组单元，包括：
多个依次堆叠的第一支架，所述第一支架包括支架本体，相邻的两个所述支架本体之间收容电芯，
多个第一支架中包括至少一个第一固定支架；所述第一固定支架设置于其他第一支架之间，
所述第一固定支架一侧的电芯形成第一电芯组，
所述第一固定支架另一侧的电芯形成第二电芯组，
连接结构件，设置于多个所述支架本体的一端；
所述第一固定支架的支架本体上设置有固定件，所述第一固定支架的固定件固定于所述连接结构件，使所述连接结构件和所述第一固定支架在第一方向上固定，其中所述第一方向为多个第一支架的堆叠方向；
所述第一电芯组和所述第二电芯组关于所述第一固定支架的对称中心轴，或所述第一电芯组和所述第二电芯组关于多个第一固定支架的对称中心轴对称。
根据本申请的一些实施例，所述第一电芯组和所述第二电芯组的电芯的数量相同。
根据本申请的一些实施例，所述固定件包括第一凸台；
所述连接结构件的侧壁对应所述第一凸台设置第一定位槽，所述第一定位槽与述第一凸台匹配固定。
根据本申请的一些实施例，所述固定件包括第二凸台；
所述第二凸台和所述第一凸台分别位于所述支架本体的两侧；
所述连接结构件背离所述第一定位槽的一侧对应所述第二凸台设置第二定 位槽；所述第二定位槽与述第二凸台匹配固定。
根据本申请的一些实施例，每一所述第一支架包括所述固定件，所述固定件包括第一凸台和卡扣，所述第一凸台和所述卡扣分别位于所述连接结构件的两侧；所述第一凸台抵持于所述连接结构件，所述卡扣扣合于所述连接结构件。
根据本申请的一些实施例，所述卡扣包括相交的两个抵持面；
一个所述抵持面与所述支架本体相向抵持于所述连接结构件相对的两侧；
另一个所述抵持面与所述第一凸台相向抵持于所述连接结构件相对的两侧。
根据本申请的一些实施例，所述电池模组单元还包括两个第二支架，两个所述第二支架设于多个所述第一支架沿第一方向的两侧，所述第二支架和相邻的所述第一支架之间收容所述电芯；
所述第二支架设置凸出部；
所述连接结构件沿所述第一方向的两侧分别设置耳勾，两个所述耳勾分别与所述第二支架的凸出部固定。
根据本申请的一些实施例，所述第一支架的支架本体沿所述第一方向的两侧分别设置至少一组卡槽和嵌入部；
所述第一支架的卡槽能够与相邻的另一所述第一支架的嵌入部嵌合。
根据本申请的一些实施例，所述支架本体位于所述连接结构件两侧的侧壁对称设置所述卡槽和所述嵌入部，且位于所述侧壁两侧的所述卡槽和所述嵌入部对称分布；相邻的两个所述第一支架中，其中一个所述第一支架相对另一个所述第一支架在垂直于所述第一方向的平面内旋转180°安装。
根据本申请的一些实施例，每一所述第一支架包括所述固定件，所述固定件包括卡扣；
所述卡扣包括相交的两个抵持面；一个所述抵持面与所述支架本体相向抵持于所述连接结构件相对的两侧；
位于所述连接结构件两侧的两个所述卡扣的另一抵持面相向抵持于所述连接结构件相对的两侧。
根据本申请的一些实施例，所述电池模组单元还包括用于连接所述电芯的极耳的汇流排，所述汇流排固定于所述连接结构件。
根据本申请的一些实施例，至少一个所述第一支架设置定位销，所述连接结构件对应设置定位孔；
所述定位销能够通过相应的所述定位孔。
根据本申请的一些实施例，所述定位销能够在所述定位孔内沿所述第一方向移动一设定距离。
根据本申请的一些实施例，所述汇流排上还设置采集端子，且所述采集端子位于所述汇流排的一侧。
根据本申请的一些实施例，所述汇流排与所述固定支架采用热熔连接、胶粘连接或螺纹连接。
本申请还提出一种电池模组，包括至少一个上述的电池模组单元和绑带，所 述绑带设置于至少一个所述电池模组单元外以固定所述电池模组单元。
本申请还提出一种储能系统，所述储能系统包括上述的电池模组单元或电池模组。
本申请还提出一种电动车辆，所述电动车辆包括上述的电池模组单元或电池模组。
上述电池模组单元通过多个所述第一支架中至少一个第一固定支架固定于所述连接结构件，其余所述第一支架在电芯膨胀的作用下能够沿所述第一方向移动，所述第一固定支架两侧的所述第一电芯组和所述第二电芯组关于第一固定支架或多个所述第一固定支架的对称中心轴对称，使所述第一电芯组和所述第二电芯组的电芯沿所述第一方向均匀膨胀。
附图说明
图1为根据本申请第一实施例的储能系统的结构示意图。
图2为图1中储能系统的另一视角的结构示意图。
图3为图1中电池模组的结构示意图。
图4为图3中电池模组单元去除连接结构件的结构分解示意图。
图5为图3中电池模组单元的相邻的两个第一支架和第二支架的结构分解示意图。
图6为图3中电池模组单元沿另一视角的结构示意图。
图7为图3中第一支架在另一实施例的结构示意图。
图8为图3中电池模组单元的第二支架的结构示意图。
图9为图1中储能系统的又一视角的结构示意图。
图10为图9中电池模组单元的另一第二支架的结构示意图。
图11为电池模组在第二实施例中的结构示意图。
图12为电池模组在第三实施例中的结构示意图。
主要元件符号说明
储能系统              300
绑带                  301
连接架                303
紧固件                305
电池模组              200
电池模组单元          100，100’，100”
第一端                101
第二端                103
第一电芯组            105
第二电芯组             107
电芯                   1001
连接结构件             1，4
第一定位槽             11
第二定位槽             11a
耳勾                   12，42
汇流排                 13，14
采集端子               15
定位孔                 16
螺纹孔                 17
第一支架               2
第一固定支架           2a
支架本体               21
侧壁                   211
固定件                 23
第一凸台               231，231a
第二凸台               233，233a
卡扣                   235
抵持面                 2351
卡槽                   24，24a，34，34a
底壁                   241
嵌入部                 25，25a，35，35a
定位销                 26
第二支架               3
凸出部                 31
导孔                   33
导柱                   36
第一方向               X
第二方向               Y
第三方向               Z
对称中心轴             N，N’，N”
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
第一实施例
请同时参阅图1和图2，一种储能系统300，包括绑带301和多个电池模组200。所述绑带301设置于多个所述电池模组200外，且使多个所述电池模组200抵接固定，但不限于此。所述电池模组200的数量为四个，但不限于此。所述电池模组200包括至少一个所述电池模组单元100。在第一实施例中，所述电池模组单元100的数量为一个，但不限于此。可以理解，其他实施例中，所述电池模组200也可以包括两个或其他数量的电池模组单元100。
请同时参阅图1、图3和图4，所述电池模组单元100包括相对设置的第一端101和第二端103、第一电芯组105、第二电芯组107、连接结构件1和多个依次堆叠的第一支架2。定义第一方向X为多个第一支架2的堆叠方向。一实施例中，所述第一方向X为所述第二端103朝向所述第一端101的方向，但不限于此。所述第一支架2包括支架本体21和设于所述支架本体21上的固定件23。所述第一电芯组105和所述第二电芯组107分别包括多个沿所述第一方向X依次布置的电芯1001。相邻的两个所述支架本体21之间收容一个所述电芯1001，但不限于此。所述连接结构件1设置于多个所述支架本体21的一端。多个所述第一支架2包括一个第一固定支架2a，但不限于此。所述第一固定支架2a固定于所述连接结构件1以使所述连接结构件1和所述第一固定支架2a在所述第一方向X上固定。第一固定支架2a位于多个所述第一支架2在所述第一方向X的对称中心轴N处，所述对称中心轴N垂直于所述第一方向X。一实施例中，所述第一固定支架2a在所述第一方向X的对称中心轴与对称中心轴N共线，但不限于此。所述第一固定支架2a一侧的多个电芯1001形成第一电芯组105，所述第一固定支架2a另一侧的多个电芯1001形成第二电芯组107。具体地，所述第一电芯组105设置于所述第一端101和所述第一固定支架2a一侧端之间；所述第二电芯组107设置于所述第二端103和所述第一固定支架2a的另一侧端之间。所述第一电芯组105和所述第二电芯组107关于所述第一固定支架2a的对称中心轴对称。
可以理解的是，在其他实施例中，相邻的两个所述支架本体21之间也可以收容两个或其他数量的所述电芯1001。
多个所述第一支架2的堆叠方向不限于第二端103朝向第一端101，可以理解的是，在其他实施例中，所述第一方向X也可以为所述第一端101朝向所述第二端103的方向。
请参阅图3，在第一实施例中，所述第一支架2的数量为七个，但不限于此。其中，所述第一固定支架2a在七个所述第一支架2中排列顺序为第四。所述电池模组单元100还包括两个第二支架3。两个所述第二支架3设于多个所述第一支架2沿所述第一方向X的两侧。所述第二支架3和相邻的所述第一支架2之间收容所述电芯1001。七个所述第一支架2中，位于所述第一固定支架2a朝向所述第一端101一侧的第一个至第三个所述第一支架2及位于所述第一端101的所述第二支架3固定的四个电芯1001形成第一电芯组105，位于所述第一固定支架2a另一侧的第五个至第七个所述第一支架2及另一个所述第二支架3固定的四个电芯1001形成第二电芯组107。
可以理解的是，在其他实施例中，所述电池模组单元100也可以省略两个所述第二支架3，七个所述第一支架2中，位于所述第一固定支架2a一侧的第一个至第三个所述第一支架2固定的三个电芯1001形成第一电芯组105，位于所述第一固定支架2a另一侧的第五个至第七个所述第一支架2固定的三个电芯1001形成第二电芯组107。
请参阅图3，所述第一固定支架2a设置第一凸台231a。所述连接结构件1对应所述第一凸台231a设置第一定位槽11。所述第一定位槽11与所述第一凸台231a的数量相等。所述第一凸台231a卡入所述第一定位槽11以在所述第一方向X定位。除所述第一固定支架2a外的六个所述第一支架2分别能够在所述电芯1001膨胀变形时沿所述连接结构件1移动，且位于所述第一固定支架2a两侧的三个所述第一支架2可移动的总距离相等，所述第一固定支架2a两侧的多个所述电芯1001的累积膨胀距离相等，使所述第一电芯组105和所述第二电芯组107膨胀均匀。
请同时参阅图3和图6，在第一实施例中，所述第一固定支架2a还设置第二凸台233a。所述第二凸台233a和所述第一凸台231a分别位于所述支架本体21的两侧。所述连接结构件1背离所述第一定位槽11的一侧对应所述第二凸台233a设置所述第二定位槽11a。所述第二凸台233a卡入所述第二定位槽11a以在所述第一方向X定位，且提高了所述第一固定支架2a与所述连接结构件1的连接强度。
请参阅图1和图3，所述固定件23抵接于所述连接结构件1的侧壁，使所述连接结构件1和所述第一支架2在第二方向Y和第三方向Z定位。其中，所述第一方向X、所述第二方向Y和所述第三方向Z分别垂直。所述第二方向Y为所述支架本体21朝向所述连接结构件1的方向，但不限于此。
请同时参阅图5和图6，所述第一支架2的支架本体21沿所述第一方向X 的两侧分别设置至少一组卡槽24和嵌入部25。所述第一支架2的卡槽24能够与相邻的另一个所述第一支架2的嵌入部25嵌合，且使多个所述第一支架2于所述第二方向Y和所述第三方向Z定位。具体地，在第一实施例中，所述支架本体21位于所述连接结构件1两侧的侧壁211对称设置所述卡槽24和所述嵌入部25。每个所述侧壁211的每侧设置两组所述卡槽24和所述嵌入部25，且位于所述侧壁211两侧的所述卡槽24和所述嵌入部25对称分布，但不限于此。相邻的两个所述第一支架2中，其中一个所述第一支架2和所述第一固定支架2a相对另一个所述第一支架2和所述第一固定支架2a在垂直于所述第一方向X的平面内旋转180°安装，使多个第一支架2相互抵持并分别于所述第二方向Y和所述第三方向Z定位。例如，所述第一支架2的嵌入部25能够嵌入相邻的所述第一固定支架2a的卡槽24内，且抵持于所述卡槽24的底壁241上；所述第一固定支架2a的嵌入部25嵌入所述第一支架2的卡槽24内并抵持于所述卡槽24的底壁241上，所述第一支架2和所述第一固定支架2a分别于所述第二方向Y和所述第三方向Z定位。
请同时参阅图5和图6，在第一实施例中，所述支架本体21的侧壁211于两端处的两侧分别设置至少一组卡槽24a和嵌入部25a。所述第一支架2的卡槽24a能够与相邻的另一个所述第一支架2的嵌入部25a嵌合，且使多个所述第一支架2和所述第一固定支架2a于所述第二方向Y和所述第三方向Z定位。可以理解的是，其他实施例中，所述卡槽24与所述嵌入部25，和/或所述卡槽24a与所述嵌入部25a也可以省略。
可以理解的是，在其他实施例中，所述侧壁211的一侧仅设置一组所述卡槽24和所述嵌入部25，位于所述侧壁211两侧的所述卡槽24和所述嵌入部25对称分布，如图7和图8所示。所述侧壁211的一侧也可以设置三组或其他数量的所述卡槽24和所述嵌入部25，只要所述第一支架2的卡槽24与相邻的另一所述第一支架2的嵌入部25嵌合即可。
请参阅图6，所述第二支架3对应所述第一支架2的卡槽24、24a和嵌入部25、25a分别设置嵌入部35、35a和卡槽34、34a以使所述第二支架3与所述第一支架2分别于所述第二方向Y和所述第三方向Z定位。
请同时参阅图1至图3，所述固定件23包括第一凸台231和卡扣235。所述第一凸台231设于所述支架本体21朝向所述连接结构件1的一侧。所述卡扣235包括相交的两个抵持面2351。其中一个所述抵持面2351与所述支架本体21相向抵持于所述连接结构件1相对的两侧，使所述第一支架2、所述第一固定支架2a和所述连接结构件1沿所述第二方向Y定位。另一个所述抵持面2351与所述第一凸台231相向抵持于所述连接结构件1相对的两侧，使多个所述第一支架2、所述第一固定支架2a和所述连接结构件1沿所述第三方向Z定位。
可以理解的是，在其他实施例中，所述第一固定支架2a的第二凸台233a和所述连接结构件1的第二定位槽11a也可以省略。所述第一支架2的第二凸台233和/或所述第一固定支架2a的卡扣235也可以省略。
请同时参阅图3和图5，所述第二支架3沿所述第二方向Y设置相对的两个凸出部31。两个所述凸出部31分别抵接于所述连接结构件1的两侧。所述连接结构件1沿所述第一方向X的两侧分别设置耳勾12。两个所述耳勾12分别抵持所述第二支架3的两个凸出部31的外侧，且使多个所述第一支架2、所述第一固定支架2a和两个所述第二支架3分别抵持固定相应的所述电芯1001。在第一实施例中，所述连接结构件1采用注塑成型，但不限于此。所述耳勾12能够允许当所述电芯1001膨胀至一定程度后带动所述第一支架2和所述第二支架3沿所述第一方向X移动，使所述第二支架3的凸出部31脱离所述耳勾12以平衡所述多个电芯1001的内部压力。
请同时参阅图1、图2和图5，在第一实施例中，每一所述第一支架2和所述第一固定支架2a的结构相同，但不限于此。所述第一支架2的固定件23包括第一凸台231、第二凸台233和卡扣235。所述第一凸台231与所述第一凸台231a的结构相同，所述第二凸台233与所述第二凸台233a的结构相同。所述第一支架2所述第一固定支架2a沿所述第二方向Y的两侧对称设置所述第一凸台231/231a、所述第二凸台233/233a和所述卡扣235。
请同时参阅图3和图9，所述第一凸台231/231a位于所述支架本体21沿所述第一方向X的中间处，所述第二凸台233/233a沿所述第一方向X相对所述第一凸台231/231a偏置设于所述支架本体21。相应地，所述连接结构件1对应所述第一凸台231a的第一定位槽11位于所述连接结构件1的中间处。所述连接结构件1对应所述第二凸台233a的第二定位槽11a沿所述第一方向X相对于所述第一定位槽11偏置。所述第一支架2和所述第一固定支架2a的所述第二凸台233/233a和所述卡扣235沿所述第二方向Y依次设置。所述第一支架2和所述第一固定支架2a采用注塑成型，但不限于此。所述第一支架2和所述第一固定支架2a的所述第一凸台231/231a与所述第二凸台233/233a和所述卡扣235采用偏置设计以利工艺制造，且提高所述第一支架2和所述第一固定支架2a与所述连接结构件1的连接强度。
可以理解的是，在其他实施例中，所述第一凸台231/231a、所述第二凸台233/233a和所述卡扣235可以位于所述支架本体21上沿所述第一方向X的任意处，只要所述第一凸台231/231a与所述第二凸台233/233a位于所述连接结构件1相对的两侧即可。请同时参阅图1和图3，所述连接结构件1设置两个汇流排13和一个汇流排14以连接所述电芯1001的极耳。两个所述汇流排13位于所述汇流排14的两侧。所述汇流排14上还设置采集端子15，且所述采集端子15位于所述汇流排13和所述汇流排14的一侧。所述汇流排13和所述汇流排14分别与所述连接结构件1采用热熔连接，但不下于此。例如，在其他实施例中，所述汇流排13和所述汇流排14分别与所述连接结构件1也可以采用胶粘连接或螺纹连接。
一实施例中，所述汇流排13和所述汇流排14为铜排，但不限于此。
请参阅图3，至少一个所述第一支架2于一侧设置定位销26。所述连接结构 件1对应设置定位孔16。具体地，所述定位孔16位于所述汇流排13和所述汇流排14朝向所述采集端子15的一侧，但不限于此。所述定位销26能够通过相应的所述定位孔16，以避免所述采集端子15装反导致失效。可以理解的是，其他实施例中，所述定位销26和所述定位孔16也可以省略。
请参阅图3，每一所述第一支架2均于一侧设有一个定位销26。第一固定支架2a的定位销26位于背离所述连接结构件1的一侧。所述连接结构件1的定位孔16对应于多个所述第一支架2朝向所述连接结构件1的多个所述定位销26。因相邻的两个所述第一支架2中一个在垂直于所述第一方向X的平面内旋转180度安装，多个第一支架朝向所述连接结构件1的定位销26的数量之和为四个，相应地，所述连接结构件1的定位孔16的数量为四个。所述定位孔16允许相应的所述第一支架2的定位销26在其内沿所述第一方向X朝向该第一支架2背离所述第一固定支架2a的方向移动一设定距离，进一步提高两个所述第一支架2和所述第一固定支架2a之间的电芯1001膨胀的均匀性。
请同时参阅图9和图10，所述电池模组单元100还包括连接结构件4。所述连接结构件4设置于所述多个第一支架2背离所述连接结构件1的一侧。所述卡扣235扣合于所述连接结构件4以使多个所述第一支架2和所述第一固定支架2a与所述连接结构件4分别在所述第二方向Y和所述第三方向Z定位。所述连接结构件4的双侧分别设置两个耳勾42。每两个所述耳勾42分别抵持于所述第二支架3的两个所述凸出部31的外侧，且使多个所述第一支架2、所述第一固定支架2a和两个所述第二支架3分别抵持固定所述电芯1001。所述连接结构件4与所述连接结构件1分别于多个所述第一支架2、所述第一固定支架2a和两个所述第二支架3的两侧，提高了电池模组单元100的强度，可以理解的是，在其他实施例中，所述连接结构件4也可以省略。
请参阅图1，所述储能系统300还包括多个连接架303。每个所述连接架303的两端分别与相邻的两个所述电池模组200连接。具体地，所述连接结构件1两侧设有螺纹孔17。所述连接架303通过紧固件305与所述螺纹孔17螺纹连接，且所述连接架303贴合于所述汇流排14上。所述连接架303大致为U形片结构。所述连接架303能够沿所述第一方向X延伸弹性变形，以允许两个相邻的所述电池模组200沿所述第一方向X移动。可以理解的是，在其他实施例中，所述连接架303也可以省略。
可以理解的是，在其他实施例中，所述储能系统300也可以省略绑带301，多个电池模组200通过所述连接架303或其他方式连接固定。
请同时参阅图5和图9，相邻的两个所述电池模组200中，两个相邻的所述第二支架3相向设置至少一组导孔33和导柱36。所述导柱36能够插入所述导孔33以为两个所述电池模组200安装提供所述第一方向X的导向。可以理解的是，在其他实施例中，所述导孔33和所述导柱36也可以省略。
在一些实施例中，所述绑带301为钢带，但不限于此。
可以理解的是，在其他实施例中，所述第一固定支架2a与所述连接结构件 1也可以采用螺纹连接或胶粘等连接固定。除所述第一固定支架2a外的多个所述第一支架2也可以省略第一凸台231和第二凸台233。所述第一支架2和所述第一固定支架2a的固定件23包括两个相向设置于所述支架本体21上的卡扣235。两个所述卡扣235位于所述连接结构件1两侧，且抵持于所述连接结构件1使所述第一支架2和所述第一固定支架2a分别与所述连接结构件1在所述第二方向Y和所述第三方向Z定位。
可以理解的是，在其他实施例中，相邻的两个所述第一支架2也可以采用不同的结构，以使相邻的两个所述第一支架2无需旋转180度安装。
可以理解的是，在其他实施例中，所述电池模组单元100中也可以仅所述第一固定支架2a设置固定件23，所述固定件23仅包含第一凸台231，所述第一凸台231与所述连接结构件1的第一定位槽11配合使所述第一固定支架2a固定于所述连接结构件1。所述电池模组200还包括另一绑带(图未示)，多个所述第一支架2和/或所述第二支架3采用所述另一绑带固定于所述连接结构件1。
可以理解的是，在其他实施例中，所述储能系统300也可以省略所述绑带301、所述连接架303和所述紧固件305，所述储能系统300包括上述的电池模组单元100。
第二实施例
请参阅图11，电池模组单元100’与所述电池模组单元100的结构大致相同，区别在于，所述电池模组单元100’的第一支架2的数量为八个；所述第一固定支架2a的数量为两个。两个所述第一固定支架2a关于多个所述第一支架2在所述第一方向X的对称中心轴N’对称并与所述对称中心轴N’相邻，两个所述第一固定支架2a的对称中心轴与所述对称中心轴N’重合；两个所述第一固定支架2a分别固定于所述连接结构件1；省略所述卡槽24、24a、34、34a和嵌入部25、25a、35、35a。两个所述第一固定支架2a收容定位一个电芯1001。所述第一电芯组105位于所述第一固定支架2a与所述第一端101之间，所述第二电芯组107位于另一所述第一固定支架2a与所述第二端103之间。所述第一电芯组105和所述第二电芯组107关于两个所述第一固定支架2a的对称中心轴对称。两个所述第一固定支架2a在八个所述第一支架2中的排序分别为第四和第五。八个所述第一支架2中，排序为第四的所述第一固定支架2a朝向所述第一端101一侧的第一个至第三个所述第一支架2及一个所述第二支架3固定的四个电芯1001形成第一电芯组105。八个所述第一支架2中，排序为第五的所述第一固定支架2a另一侧的第六个至第八个所述第一支架2及另一个所述第二支架3固定的四个电芯1001形成第二电芯组107。本实施例中，两个第一固定支架2a相邻设置，其他实施例中，两个第一固定支架2a可以不相邻设置，比如两个第一固定支架2a之间设置有其他第一支架或第一固定支架，不局限于此。
所述第一固定支架2a设置第一凸台231a，所述连接结构件1对应两个所述第一固定支架2a设置两个第一定位槽11。所述第一凸台231a能够卡入相应的 所述第一定位槽11以使所述第一固定支架2a与所述连接结构件1在所述第一方向X定位。每一所述第一支架2和所述第一固定支架2a的固定件23包括第一凸台231/231a和卡扣235。所述第一凸台231/231a和所述卡扣235的一个抵持面2351相向抵持于所述连接结构件1的两侧，所述卡扣235和所述支架本体21相向抵持于所述连接结构件1的两侧，使所述第一支架2和所述第一固定支架2a与所述连接结构件1分别于所述第二方向Y和所述第三方向Z定位。
所述第一电芯组105和所述第二电芯组107关于所述两个第第一固定支架2的对称中心轴对称，使所述第一固定支架2a两侧的可移动的三个所述第一支架2a移动的总距离相等，所述第一固定支架2a两侧的所述电芯1001的累积膨胀距离相等，使所述第一电芯组105和所述第二电芯组107膨胀均匀，本实施例中，两个所述第一固定支架2a的对称中心轴即为多个第一支架2在所述第一方向X的对称中心轴N’，其他实施例中，不限于此。
可以理解的是，在其他实施例中，每一所述第一支架2和所述第一固定支架2a也可以设置第二凸台233/233a以抵持于所述连接结构件1背离所述第一凸台231/231a的一侧以提高连接强度。
第三实施例
请参阅图12，电池模组单元100”与电池模组单元100的结构大致相同，区别在于，所述电池模组单元100”的所述第一支架2的数量为十五个，所述第一固定支架2a的数量为三个。所述第一电芯组105和所述第二电芯组107的数量分别为两个。具体地，三个所述第一固定支架2a分别位于十五个所述第一支架2在所述第一方向X的对称中心轴N”处、及关于所述对称中心轴N”对称的两处。具体地，三个所述第一固定支架2a在多个第一支架2中沿所述第一方向X排序分别为第四、第八和第十二。三个所述第一固定支架2a分别固定于所述连接结构件1。三个所述第一固定支架2a的对称中心轴与所述对称中心轴N’重合，其他实施例中不限于此。
十五个所述第一支架2中，排序为第四的所述第一固定支架2a朝向第一端101一侧的第一个至第三个所述第一支架2及位于第一端101的所述第二支架3固定的四个电芯1001形成第一电芯组105。十五个所述第一支架2中，排序为第四和第八的两个所述第一固定支架2a之间的第五至第七个第一支架2固定的四个电芯1001形成第二电芯组107。十五个所述第一支架2中，排序为第八和第十二的两个所述第一固定支架2a之间的第九至第十一个第一支架2固定的四个电芯1001形成另一个第一电芯组105。十五个所述第一支架2中，排序为第十二的所述第一固定支架2a朝向第二端103一侧的第十三个至第十五个所述第一支架2及位于第二端103的另一个所述第二支架3固定的四个电芯1001形成另一个第二电芯组107。所述第一固定支架2a设置第一凸台231a，所述连接结构件1对应三个所述第一固定支架2a设置三个第一定位槽11。所述第一凸台231a能够卡入相应的所述第一定位槽11以使所述第一固定支架2a与所述连接 结构件1在所述第一方向X定位。三个所述第一固定支架2a固定于所述连接结构件1，使每个所述第一固定支架2a两侧的可移动的三个所述第一支架2移动的总距离相等，所述第一固定支架2a两侧的所述第一电芯组105/第二电芯组107的电芯1001的累积膨胀距离相等，使所述第一电芯组105和所述第二电芯组107膨胀均匀。
可以理解的是，在其他实施例中，电池模组单元100”的第一支架2也可以为十九个或其他数量。当所述第一支架2的数量为十九个时，也可以在沿所述第一方向X排序为第五、第十、第十五的第一固定支架2a设置第一凸台231a，以卡入所述连接结构件1上的三个第一定位槽11，使每个所述第一固定支架2a两侧的四个所述第一支架2移动的总距离相等。
本申请还提出一种包括上述电池模组单元100或上述电池模组200的电动车辆(图未示)。
结合上述第一至第三实施例可以看出，通过多个所述第一支架2中至少一个第一固定支架2a固定于所述连接结构件1，其余所述第一支架2能够在所述电芯1001膨胀的作用下沿所述第一方向X移动，且每一固定于所述连接结构件1的第一固定支架2a两侧的第一电芯组105和第二电芯组107关于多个所述第一固定支架2a或多个第一固定支架2a在所述第一方向X的对称中心轴对称，使所述第一电芯组105和所述第二电芯组107的电芯1001沿所述第一方向X均匀膨胀。
以上实施例仅用以说明本申请的技术方案而非限制，尽管参照较佳实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解，可以对本申请的技术方案进行修改或等同替换，而不脱离本申请技术方案的精神和实质。

Claims (18)

  1. 一种电池模组单元，用于形成电池模组，其特征在于，包括：
    多个依次堆叠的第一支架和多个电芯，其中所述第一支架包括支架本体，相邻的两个所述支架本体之间收容电芯，
    多个第一支架中包括至少一个第一固定支架，所述第一固定支架设置于其他第一支架之间，
    所述第一固定支架一侧的电芯形成第一电芯组，
    所述第一固定支架另一侧的电芯形成第二电芯组，
    连接结构件，设置于多个所述支架本体的一端，
    所述第一固定支架的支架本体上设置有固定件，所述第一固定支架的固定件固定于所述连接结构件，使所述连接结构件和所述第一固定支架在第一方向上固定，其中所述第一方向为多个第一支架的堆叠方向，
    所述第一电芯组和所述第二电芯组关于所述第一固定支架的对称中心轴对称，或所述第一电芯组和所述第二电芯组关于多个第一固定支架的对称中心轴对称。
  2. 如权利要求1所述的电池模组单元，其特征在于：所述第一电芯组和所述第二电芯组的电芯的数量相同。
  3. 如权利要求2所述的电池模组单元，其特征在于：所述固定件包括第一凸台；
    所述连接结构件的侧壁对应所述第一凸台设置第一定位槽，所述第一定位槽与述第一凸台匹配固定。
  4. 如权利要求3所述的电池模组单元，其特征在于：所述固定件包括第二凸台；
    所述第二凸台和所述第一凸台分别位于所述支架本体的两侧；
    所述连接结构件背离所述第一定位槽的一侧对应所述第二凸台设置第二定位槽；所述第二定位槽与所述第二凸台匹配固定。
  5. 如权利要求1所述的电池模组单元，其特征在于：每一所述第一支架包括所述固定件，所述固定件包括第一凸台和卡扣，所述第一凸台和所述卡扣分别位于所述连接结构件的两侧；所述第一凸台抵持于所述连接结构件，所述卡扣扣合于所述连接结构件。
  6. 如权利要求5所述的电池模组单元，其特征在于：所述卡扣包括相交的两个抵持面；
    一个所述抵持面与所述支架本体相向抵持于所述连接结构件相对的两侧；
    另一个所述抵持面与所述第一凸台相向抵持于所述连接结构件相对的两侧。
  7. 如权利要求1所述的电池模组单元，其特征在于：所述电池模组单元还包括两个第二支架，两个所述第二支架设于多个所述第一支架沿第一方向的两侧，所述第二支架和相邻的所述第一支架之间收容所述电芯；
    所述第二支架设置凸出部；
    所述连接结构件沿所述第一方向的两侧分别设置耳勾，两个所述耳勾分别与所述第二支架的凸出部固定。
  8. 如权利要求1所述的电池模组单元，其特征在于：所述第一支架的支架本体沿所述第一方向的两侧分别设置至少一组卡槽和嵌入部；
    所述第一支架的卡槽能够与相邻的另一所述第一支架的嵌入部嵌合。
  9. 如权利要求8所述的电池模组单元，其特征在于：所述支架本体位于所述连接结构件两侧的侧壁对称设置所述卡槽和所述嵌入部，且位于所述侧壁两侧的所述卡槽和所述嵌入部对称分布；相邻的两个所述第一支架中，其中一个所述第一支架相对另一个所述第一支架在垂直于所述第一方向的平面内旋转180°安装。
  10. 如权利要求8所述的电池模组单元，其特征在于：每一所述第一支架包括所述固定件，所述固定件包括卡扣；
    所述卡扣包括相交的两个抵持面；一个所述抵持面与所述支架本体相向抵持于所述连接结构件相对的两侧；
    位于所述连接结构件两侧的两个所述卡扣的另一抵持面相向抵持于所述连接结构件相对的两侧。
  11. 如权利要求1所述的电池模组单元，其特征在于：所述电池模组单元还包括用于连接所述电芯的极耳的汇流排，所述汇流排固定于所述连接结构件。
  12. 如权利要求11所述的电池模组单元，其特征在于：至少一个所述第一支架设置定位销，所述连接结构件对应设置定位孔；
    所述定位销能够通过相应的所述定位孔。
  13. 如权利要求12所述的电池模组单元，其特征在于：所述定位销能够在所述定位孔内沿所述第一方向移动一设定距离。
  14. 如权利要求11所述的电池模组单元，其特征在于：所述汇流排上还设置采集端子，且所述采集端子位于所述汇流排的一侧。
  15. 如权利要求11所述的电池模组单元，其特征在于：所述汇流排与所述固定支架采用热熔连接、胶粘连接或螺纹连接。
  16. 一种电池模组，包括至少一个电池模组单元和绑带，所述绑带设置于至少一个所述电池模组单元外以固定所述电池模组单元，其特征在于：所述电池模组单元为权利要求1-15任一项所述的电池模组单元。
  17. 一种储能系统，所述储能系统包括如权利要求1至15任一项所述的电池模组单元或如权利要求16所述的电池模组。
  18. 一种电动车辆，所述电动车辆包括如权利要求1至15任一项所述的电池模组单元或如权利要求16所述的电池模组。
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