CN218602661U - Partition plate assembly and battery module - Google Patents

Partition plate assembly and battery module Download PDF

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Publication number
CN218602661U
CN218602661U CN202222942873.7U CN202222942873U CN218602661U CN 218602661 U CN218602661 U CN 218602661U CN 202222942873 U CN202222942873 U CN 202222942873U CN 218602661 U CN218602661 U CN 218602661U
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China
Prior art keywords
width
piece
plate
mounting
battery
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CN202222942873.7U
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Chinese (zh)
Inventor
戴舒拉
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Xiamen Hithium Energy Storage Technology Co Ltd
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Xiamen Hithium Energy Storage Technology Co Ltd
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Priority to CN202222942873.7U priority Critical patent/CN218602661U/en
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Publication of CN218602661U publication Critical patent/CN218602661U/en
Priority to PCT/CN2023/128204 priority patent/WO2024093973A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289Mountings; 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507Interconnectors 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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

Abstract

The utility model discloses an isolation board subassembly and battery module, the isolation board subassembly includes the division board and converges the piece, the division board is used for setting up at battery monomer top, be equipped with at least one spacing portion on the division board, it is used for electricity connection battery monomer and output pole base to converge the piece, it is equipped with at least one spacing portion to converge the piece correspondence, utilize the clearance connection of spacing portion and cooperation portion, make to converge the piece and can be connected to the division board, the division board has certain range of removal simultaneously again relatively, on the one hand, make to converge the piece and can pass through self activity, thereby absorb the error that produces when battery monomer piles up, be convenient for converge the piece and counterpoint with the battery monomer and be connected, the precision of battery module assembling process has been improved. On the other hand, the requirement on the alignment precision of the manufacture of the single battery is reduced, and the inclusion of the isolation plate component on the size error of the single battery is improved.

Description

Partition plate assembly and battery module
Technical Field
The utility model relates to a battery module technical field especially relates to an isolation board subassembly and battery module.
Background
The insulation board assembly is generally used to separate the battery cells from the wire harness in the battery module, and to insulate the wire harness from the battery cells. The isolation board assembly comprises an isolation board and a conductive piece (comprising a series conductive piece and a confluence piece), wherein the isolation board is used for bearing a wire harness and the conductive piece, and the conductive piece is used for connecting battery monomers or connecting the battery monomers with an output electrode base.
In the correlation technique, because the battery module mainly piles up the equipment through a plurality of battery monomer, the stack tolerance that its produced can produce great error after the accumulation, leads to the piece of converging to be difficult to carry out accurate counterpoint with battery monomer, increases the welding degree of difficulty of the two.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model discloses division board subassembly can make the piece that converges have certain movable allowance for the division board, and the piece that converges and battery monomer accurate counterpoint of being convenient for.
In order to realize the above-mentioned purpose, first aspect, the utility model discloses a division board subassembly, the division board subassembly is applied to the battery module, the division board subassembly includes:
the isolation plate is provided with at least one limiting part; and
at least one piece that converges, converge the piece install in the division board, converge the piece and be equipped with at least one cooperation portion, at least one cooperation portion with the swing joint of at least one spacing portion one-to-one respectively.
The spacing part is connected with the matching part in a clearance manner, so that the confluence piece can be connected to the isolation plate, and meanwhile, the confluence piece can have certain movement amplitude relative to the isolation plate. On the one hand, make to converge the piece and can pass through self activity to absorb the error that produces when battery monomer piles up, be convenient for converge the piece and counterpoint with the battery monomer and be connected, improved battery module assembling process's precision. On the other hand, the requirement on the alignment precision of the manufacture of the single battery is reduced, and the inclusion of the size error of the single battery by the isolation plate component is improved.
As an optional implementation manner, in an embodiment of the present invention, the isolation plate is provided with a plurality of limiting portions, the junction piece is provided with a plurality of matching portions, and the plurality of limiting portions and the plurality of matching portions are movably connected along at least two directions of the length, the width and the thickness direction of the isolation plate respectively.
Through setting up a plurality of spacing portions and corresponding a plurality of cooperation portions that set up, can make the piece that converges realize clearance fit along length, width, the thickness direction of division board respectively and be connected with the division board to can absorb the length, width, the ascending error in thickness direction along the division board that produce when battery monomer piles up, improve battery monomer and converge the precision of being connected of piece.
As an optional implementation manner, in an embodiment of the present invention, the plurality of limiting portions include a first limiting portion, a second limiting portion, and a third limiting portion, and the partition board includes a bottom board and a first mounting portion and a second mounting portion disposed on the bottom board;
the first installation part extends along the length direction of the bottom plate, the second installation part extends along the width direction of the bottom plate and is connected with the first installation part, so that an installation area is formed among the bottom plate, the first installation part and the second installation part, and the installation area is used for installing the confluence piece;
the first spacing portion and the third spacing portion are arranged in the first installation portion, and the second spacing portion is arranged in at least one of the first installation portion and the second installation portion.
Through setting up first installation department, can provide the mounted position for first spacing portion, the spacing portion of second, the spacing portion of third, first installation department and second installation department can provide spacingly to the removal by a wide margin of piece that converges in the length of bottom plate, width direction, and the in-process guide piece that converges and to put into correct mounted position to the division board at the piece that converges. The first installation part and the second installation part form an installation area through the first installation part and the second installation part, the bus piece can be contained in the installation area, meanwhile, the bus piece is separated from the wiring harness, and mutual influence of the bus piece and the wiring harness is avoided. The entire structure of the separator plate assembly is simplified on the premise of ensuring the connection of the separator plate with the bus bar.
As an optional implementation manner, in an embodiment of the present invention, the plurality of engaging portions include a first engaging portion, one of the first limiting portion and the first engaging portion is a protrusion, the other of the first limiting portion and the first engaging portion is a first notch, the first notch is engaged with the protrusion, an opening width of the first notch is greater than a width of the protrusion, and a difference between the opening width of the first notch and the width of the protrusion is greater than 0.3mm and less than 1.5 mm.
Like this, on the one hand can be connected to the division board with the piece that converges, on the other hand, opening width through making first breach is greater than bellied width, can be in at least one orientation of length, width or thickness of division board, make the piece that converges can have certain movable allowance relative the division board, make the piece that converges can absorb the error that battery monomer piles up the production, to the displacement that battery monomer piles up back production, the piece that converges can be through its self position of small adjustment, thereby adapt to the free displacement of battery, and like this, can improve the accuracy that converges and battery monomer counterpoint, improve the holistic equipment precision of battery module. The difference within the range can ensure that the bus piece and the isolating plate are well connected, the bus piece is not loosened too much to cause the bus piece to fall off the isolating plate, and meanwhile, the bus piece has enough movement to adapt to errors of battery cell stacking.
As an optional implementation manner, in an embodiment of the present invention, the junction piece has a first side edge extending along a length direction of the isolation plate and being close to the first limiting portion, the first limiting portion is the protrusion, the first matching portion is the first notch, the protrusion extends along a thickness direction of the isolation plate, and the first notch is disposed on the first side edge.
Through setting up first breach on first side, like this, can utilize first breach and bellied joint cooperation to the restriction converges the activity of piece in the length direction of division board, and absorbs the stack error that produces when battery monomer piles up in the length direction of division board.
As an optional implementation manner, in an embodiment of the present invention, the second limiting portion includes a first protruding portion, the first protruding portion is disposed on the first mounting portion, the first protruding portion is disposed above the first limiting portion and extends along the length direction of the isolation board, a first mounting gap is formed between the second limiting portion and the bottom board, the first side edge is engaged with the first mounting gap, the gap width of the first mounting gap is greater than the thickness of the first side edge, and the difference between the gap width of the first mounting gap and the thickness of the first side edge is greater than 0.3mm and less than 1.5 mm.
Through setting up first bellying, first side can block in first installation clearance, can connect the piece that converges in the division board, and simultaneously, first installation clearance provides certain removal surplus for the block of first side, and the piece that converges of being convenient for adapts to the ascending error of thickness direction that a plurality of battery monomer pile up the equipment back and produce. The first boss is combined with the boss, so that the connection relation between the first limiting portion and the second limiting portion can be simplified, and particularly, an approximately T-shaped structure is formed between the first boss and the boss, so that the limiting portion on the isolation plate is more compact. First installation clearance simple structure that first bellying and division board formed can enough provide sufficient cohesion for converging the connection of piece and division board, also is convenient for set up the surplus to the activity of converging the piece simultaneously.
When the difference between the width of the first mounting gap and the thickness of the first side is in the range of more than 0.3mm and less than 1.5mm, the bus piece and the isolation plate can be well connected, the bus piece and the isolation plate are not too loose to cause the bus piece to fall off from the isolation plate, and meanwhile, the bus piece has enough movement to adapt to errors of battery monomer stacking.
As an optional implementation manner, in the embodiment of the present invention, the second limiting portion includes an edge of a second protruding portion extending in the width direction of the isolation board, the second protruding portion is disposed in the second mounting portion, the confluence piece has an edge extending in the width direction of the isolation board and close to a second side of the second protruding portion, the second protruding portion is disposed at the bottom board interval to form a second mounting gap, the second side is engaged with the second mounting gap, the gap width of the second mounting gap is greater than the thickness of the second side, and the gap width of the second mounting gap and the thickness difference of the second side are greater than 0.5mm and less than 1.5 mm.
Through setting up the second bellying, cooperate first bellying simultaneously, can further strengthen the piece of converging and be connected at the thickness direction of separator plate respectively for the piece of converging is difficult to the pine takes off more.
When the difference between the width of the second mounting gap and the thickness of the second side edge is within the range, good connection between the bus piece and the partition plate can be formed, the bus piece cannot fall off from the partition plate due to too loose of the bus piece and the partition plate, and meanwhile, the bus piece can have enough movement to adapt to errors of battery cell stacking.
As an optional implementation manner, in an embodiment of the present invention, the plurality of engaging portions include a second engaging portion, one of the third limiting portion and the second engaging portion is a hook, and the other of the third limiting portion and the second engaging portion is a first through hole, the hook is engaged with the first through hole, and along the width direction of the partition board, the width of the portion of the hook located in the first through hole is smaller than the width of the first through hole, and the difference between the width of the first through hole and the width of the portion of the hook located in the first through hole is greater than 0.3mm and less than 1.5 mm.
Through the block that utilizes pothook and first through-hole to be connected, on the one hand can be connected the piece that converges in the division board, and on the other hand, the width through setting up first through-hole is greater than the width that the pothook is located the part in first through-hole, can make the relative division board of the piece that converges like this and can remove by a small margin along its width direction to the error that the adaptation battery monomer piled up the production improves the accuracy that converges the piece and counterpoint with the battery monomer, improves the holistic equipment precision of battery module.
When the difference range between the width of the first through hole and the width of the clamping hook is more than 0.3mm and less than 1.5mm, the bus piece and the isolation plate can be well connected, the bus piece cannot fall off from the isolation plate due to too loose of the bus piece and the isolation plate, and meanwhile, the bus piece can have enough activity to adapt to errors of battery monomer stacking.
As an optional implementation manner, in an embodiment of the present invention, when the third limiting portion is the hook, and the second matching portion is the first through hole, the isolation board corresponds to the first through hole and is provided with the second through hole, the hook includes a cantilever and a clamping portion connected to the cantilever, the cantilever is disposed in the first mounting portion and disposed in the second through hole, and the clamping portion is clamped to the first through hole.
Like this, the pothook can be hung and establish in the second through-hole, thereby the block portion of pothook not only passes through clearance fit with first through-hole and provides certain movable allowance for the piece that converges removes, simultaneously, the cantilever of pothook reciprocates along the thickness direction for the pothook provides movable allowance for the piece that converges can utilize the pothook to connect can remove a small margin from top to bottom in the thickness direction when in the division board, thereby adapts to the free thickness error of a plurality of batteries, further improves battery module's equipment precision.
As an optional implementation manner, in an embodiment of the present invention, the bus bar includes a first connecting portion and a second connecting portion connected in sequence, the first connecting portion is disposed on the isolation plate, and the plurality of matching portions are disposed on the first connecting portion;
the second connecting portion extends at least partially outside the partition plate.
Through setting up first connecting portion and second connecting portion, can mark off two regions fast when the piece that converges is installed to make pencil and piece that converges be connected at first connecting portion, make output utmost point base and piece that converges be connected at the second connecting portion.
In a second aspect, the present invention provides a battery module, including:
the battery pack comprises a plurality of battery monomers which are sequentially arranged;
the wire harness is used for acquiring parameters of the battery monomer; and
the partition board assembly according to the first aspect, the partition board assembly being disposed on a top of the battery pack, the partition board assembly including two bus bars, the two bus bars being disposed at two ends of the partition board, respectively, and connected to the battery cells at the two ends of the partition board, respectively, along a length direction of the partition board, wherein a direction in which the battery cells are arranged is parallel to the length direction of the partition board.
Through setting up above-mentioned division board subassembly, can make piece and the battery monomer of converging counterpoint and weld better, avoid appearing the two problem that is difficult to the counterpoint, reduce the error that the battery monomer piled up the production.
As an optional implementation manner, in an embodiment of the present invention, the first mounting portion includes a first vertical plate and a second vertical plate which are arranged at an interval, a second gap is formed between the first vertical plate and the second vertical plate, and the wire harness is inserted into the second gap;
the first limiting portion is arranged on the first vertical plate, the second limiting portion is arranged on at least one of the first vertical plate and the second mounting portion, and the third limiting portion is arranged on the second vertical plate.
Through setting first installation department to first riser and second riser to form the second breach, like this, the second breach can supply the pencil to pass through, is convenient for pencil and the piece that converges be connected, in order to gather the free parameter of battery.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the embodiment of the utility model provides a pair of division board subassembly utilizes the clearance connection of spacing portion and cooperation portion for the piece that converges can be connected to the division board, and the division board has certain range of movement simultaneously again relatively, on the one hand, makes the piece that converges can be through self activity, thereby absorbs the error that produces when battery monomer piles up, is convenient for converge the piece and counterpoint with the battery monomer and be connected, has improved the precision of battery module assembling process. On the other hand, the requirement on the alignment precision of the manufacture of the single battery is reduced, and the inclusion of the isolation plate component on the size error of the single battery is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a partition board assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is an exploded schematic view of a partition board assembly provided by an embodiment of the present invention;
fig. 5 is an enlarged view of a portion B of fig. 4.
Icon: 1. a separator plate assembly; 10. a separator plate; 12. a limiting part; 121. a first limiting part; 1210. a protrusion; 122. a second limiting part; 1220. a first boss portion; 1221. a first mounting gap; 1222. a second boss portion; 1223. a second mounting gap; 123. a third limiting part; 1230. a hook; 1231. a cantilever; 1232. a fastening part; 13. a base plate; 14. a first mounting portion; 141. a first vertical plate; 142. a second vertical plate; 143. a second notch; 15. a second mounting portion; 16. an installation area; 17. a second through hole; 20. a bus bar; 21. a fitting portion; 211. a first mating portion; 2110. a first notch; 212. a second mating portion; 2120. a first through hole; 22. a first side edge; 23. a second side edge; 24. a first connection portion; 25. a second connecting portion; 2. a battery module; 201. a battery cell; 202. a battery pack; 203. a wire harness; 204. an output pole base.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The technical solution of the present invention will be further described with reference to the following examples and drawings.
Referring to fig. 1 to 3, an embodiment of the present invention provides a separator assembly 1, in which the separator assembly 1 is applied to a battery module 2, and the separator assembly 1 includes a separator 10 and a bus bar 20. The isolation plate 10 is provided with at least one limiting part 12. The confluence piece 20 is installed on the isolation plate 10, the confluence piece 20 is provided with at least one matching part 21, and the at least one matching part 21 and the at least one limiting part 12 are respectively movably connected in a one-to-one correspondence manner, so that the displacement of the confluence piece 20 relative to the connection position of the isolation plate 10 in at least one direction of the isolation plate 10 is adjustable.
In this way, the bus bar 20 can be connected to the partition board 10 and can have a certain movement range relative to the partition board 10 by the gap connection between the limiting portion 12 and the matching portion 21. Considering that the battery module 2 includes a plurality of battery cells 201, the plurality of battery cells 201 are stacked and assembled to form the battery module 2. This scheme of adoption, on the one hand for piece 20 that converges can be through self activity, thereby absorbs the error that produces when battery monomer 201 piles up, is convenient for converge piece 20 and battery monomer 201 counterpoint and be connected, has improved the precision of 2 assembling process of battery module. On the other hand, the requirement on the alignment precision of the manufacture of the battery cell 201 is reduced, and the inclusion of the isolation plate assembly 1 on the size error of the battery cell 201 is improved.
Optionally, the position-limiting portion 12 includes at least one, that is, one or more position-limiting portions 12 may be provided, and correspondingly, one or more corresponding fitting portions 21 may be provided. For example, when the spacer plate 10 is provided with one stopper portion 12, the spacer plate 10 may be connected to the fitting portion 21 of the bus bar 20 with a gap in any one direction of the length, width, and thickness of the spacer plate 10. Alternatively, the partition plate 10 may be provided with two or three stopper portions, so that the partition plate can be simultaneously connected to the bus bar 20 with a gap in any two or three directions of length, width, and thickness. The number of the stopper portion 12 and the fitting portion 21 is not limited in this embodiment.
Optionally, the battery module 2 includes a battery output pole base 204, and the bus bar 20 is used to electrically connect the battery cells 201 with the output pole base 204, so the bus bar 20 may be a metal connector such as copper bar or aluminum bar.
Referring to fig. 2 to 5, in some embodiments, the isolation plate 10 has a plurality of position-limiting portions 12, the bus bar 20 has a plurality of engaging portions 21, and the plurality of position-limiting portions 12 and the plurality of engaging portions 21 are movably connected along at least two directions of the length, the width and the thickness of the isolation plate 10.
Through setting up a plurality of spacing portions 12 and corresponding a plurality of cooperation portions 21 that set up, can make piece 20 that converges realize clearance fit with division board 10 along the length, width, the thickness direction of division board 10 respectively and be connected to can absorb the error in the length, width, the thickness direction of producing along division board 10 when battery monomer 201 piles up, improve battery monomer 201 and the precision of being connected of piece 20 that converges.
In some embodiments, the plurality of position-limiting portions 12 include a first position-limiting portion 121, a second position-limiting portion 122, and a third position-limiting portion 123, and the partition board 10 includes a bottom plate 13, and a first mounting portion 14 and a second mounting portion 15 provided on the bottom plate 13. The first mounting portion 14 extends along the length direction of the bottom plate 13, and the second mounting portion 15 extends along the width direction of the bottom plate 13 and is connected with the first mounting portion 14, so that a mounting area 16 is formed among the bottom plate 13, the first mounting portion 14 and the second mounting portion 15, and the mounting area 16 is used for mounting the bus bar 20. The first stopper portion 121 and the third stopper portion 123 are provided on the first mounting portion 14, and the second stopper portion 122 is provided on at least one of the first mounting portion 14 and the second mounting portion 15.
By providing the first mounting portion 14, mounting positions can be provided for the first limiting portion 121, the second limiting portion 122, and the third limiting portion 123, the first mounting portion 14 and the second mounting portion 15 can provide limitation for the large-scale movement of the bus bar 20 in the length and width directions of the bottom plate 13, and the bus bar 20 is guided to be placed in a correct mounting position in the process of mounting the bus bar 20 to the partition plate 10. The mounting region 16 through which the first mounting portion 14 and the second mounting portion 15 are formed enables the bus bar 20 to be accommodated in the mounting region 16 while separating the bus bar 20 from the wire harness 203, avoiding the mutual influence therebetween. The entire structure of the partition plate assembly 1 is simplified while ensuring the connection of the partition plate 10 with the bus bar 20.
In some embodiments, the plurality of engaging portions 21 include a first engaging portion 211, one of the first position-limiting portion 121 and the first engaging portion 211 is a protrusion 1210, the other one of the first position-limiting portion 121 and the first engaging portion 211 is a first notch 2110, the first notch 2110 is engaged with the protrusion 1210, an opening width of the first notch 2110 is greater than a width of the protrusion 1210, and a difference between the opening width of the first notch 2110 and the width of the protrusion 1210 is greater than 0.3mm and less than 1.5 mm.
By providing the protrusion 1210 to engage with the first notch 2110, on one hand, the bus bar 20 can be connected to the isolation plate 10, and on the other hand, by making the opening width of the first notch 2110 greater than the width of the protrusion 1210, the bus bar 20 can have a certain movement margin with respect to the isolation plate 10 in at least one direction of the length, the width or the thickness of the isolation plate 10, so that the bus bar 20 can absorb errors generated by stacking the battery cells 201, and for the displacement generated after stacking the battery cells 201, the bus bar 20 can adapt to the displacement of the battery cells 201 by slightly adjusting the position of the bus bar 20, so that the accuracy of alignment between the bus bar 20 and the battery cells 201 can be improved, and the assembly accuracy of the whole battery module 2 can be improved.
Optionally, the first position-limiting part 121 may be provided with a protrusion 1210, and the first matching part 211 may be provided with a first notch 2110; or conversely, the first position-limiting part 121 is provided with a first notch 2110, and the first matching part 211 is provided with a protrusion 1210.
When the difference between the opening width of the first notch 2110 and the protrusion width is 0.3mm to 1.5mm, for example, 0.3, 0.5, 0.8, 1.0, 1.2, 1.5, the difference within this range can ensure that the bus bar 20 and the isolation plate 10 are well connected, so that the bus bar 20 is not too loose to cause the bus bar 20 to fall off from the isolation plate 10, and at the same time, the bus bar 20 has enough movement to accommodate the stacking error of the battery cells 201.
In some embodiments, the bus bar 20 has a first side 22 extending along the length of the isolation plate 10 and close to the first position-limiting portion 121, the first position-limiting portion 121 is a protrusion 1210, the first matching portion 211 is a first notch 2110, the protrusion 1210 extends along the thickness direction of the isolation plate 10, and the first notch 2110 is located on the first side 22.
By providing the first notch 2110 on the first side 22, the first notch 2110 is engaged with the protrusion 1210, so that the movement of the bus bar 20 in the longitudinal direction of the separator 10 is limited, and the stacking error generated in the longitudinal direction of the separator 10 when the battery cells 201 are stacked can be absorbed.
In some embodiments, the second limiting portion 122 includes a first protruding portion 1220, the first protruding portion 1220 is disposed on the first mounting portion 14, the first protruding portion 1220 is located above the first limiting portion 121 and extends along the length direction of the isolation board 10, a first mounting gap 1221 is formed between the second limiting portion 122 and the isolation board 10, the first side 22 is engaged with the first mounting gap 1221, the gap width of the first mounting gap 1221 is greater than the thickness of the first side 22, and the difference between the gap width of the first mounting gap 1221 and the thickness of the first side 22 is greater than 0.3mm and less than 1.5 mm.
Through setting up first bellying 1220, first side 22 can block in first installation clearance 1221, can connect the piece 20 that converges in division board 10, and simultaneously, first installation clearance 1221 provides certain removal allowance for the block of first side 22, and the piece 20 that converges of being convenient for adapts to the error in the thickness direction that a plurality of battery monomer 201 stacked assembly back produced. By combining the first protruding portion 1220 and the protrusion 1210, the connection relationship between the first limiting portion 121 and the second limiting portion 122 can be simplified, and particularly, a structure similar to a T shape is formed between the first protruding portion 1220 and the protrusion 1210, so that the limiting portion 12 on the partition board 10 is more compact. The first installation gap 1221 formed by the first protruding portion 1220 and the isolation plate 10 has a simple structure, and can provide sufficient binding force for the connection between the bus bar 20 and the isolation plate 10, and meanwhile, it is convenient to set a margin for the movement of the bus bar 20.
When the difference between the width of the first mounting gap and the thickness of the first side is in the range of 0.3mm to 1.5mm, for example, 0.3, 0.5, 0.8, 1.0, 1.2, 1.5, etc., the bus bar 20 and the isolation plate 10 can be well connected, so that the bus bar 20 and the isolation plate 10 are not too loose to cause the bus bar 20 to fall off from the isolation plate 10, and at the same time, the bus bar 20 has enough movement to adapt to the stacking error of the battery cells 201.
In some embodiments, the second limiting portion 122 further includes a second protrusion 1222 extending along the width direction of the partition board 10, the second protrusion 1222 is disposed on the second mounting portion 15, the bus bar has a second side 23 extending along the width direction of the partition board 10 and close to the second protrusion 1222, the second protrusion 1222 is spaced apart from the bottom plate 13 to form a second mounting gap 1223, the second side 23 is engaged with the second mounting gap 1223, the gap width of the second mounting gap 1223 is greater than the thickness of the second side 23, and the difference between the gap width of the second mounting gap 1223 and the thickness of the second side 23 is greater than 0.5mm and less than 1.5 mm.
By providing the second projecting portion 1222 while fitting the first projecting portion 1220, the connection of the bus bars 20 in the thickness direction of the partition board 10, respectively, can be further enhanced.
Alternatively, the difference between the width of the second mounting gap 1223 and the thickness of the second side 23 is 0.5mm to 1.5mm, for example, 0.5, 0.8, 1.0, 1.2, 1.5, and the like, and the difference within this range can prevent the bus bar 20 and the spacer plate 10 from being connected well, so that the bus bar 20 is too loose to cause the bus bar 20 to fall off the spacer plate 10, and at the same time, the bus bar 20 has enough movement to accommodate the stacking error of the battery cells 201.
In some embodiments, the plurality of matching portions 21 further include a second matching portion 212, one of the third position-limiting portion 123 and the second matching portion 212 is a hook 1230, the other one of the third position-limiting portion and the second matching portion is a first through hole 2120, the hook 1230 is engaged with the first through hole 2120, and along the width direction of the isolation board 10, the width of the portion of the hook 1230 located in the first through hole 2120 is smaller than the width of the first through hole 2120, and the difference between the width of the first through hole 2120 and the width of the portion of the hook 1230 located in the first through hole 2120 is 0.3mm to 1.5 mm.
By utilizing the engagement connection between the hooks 1230 and the first through holes 2120, the bus bar 20 can be connected to the isolation plate 10, and on the other hand, by setting the width of the first through holes 2120 to be larger than the width of the parts of the hooks 1230 in the first through holes 2120, the bus bar 20 can move slightly in the width direction of the isolation plate 10 relative to the isolation plate 10, so that errors generated by stacking of the battery cells 201 can be adapted, the alignment accuracy of the bus bar 20 and the battery cells 201 is improved, and the assembly accuracy of the whole battery module 2 is improved.
When the difference between the width of the first through hole 2120 and the width of the hook 1230 is in a range from 0.3mm to 1.5mm, for example, 0.3, 0.5, 0.8, 1.0, 1.2, 1.5, etc., the bus bar 20 and the isolation plate 10 can be well connected, so that the bus bar 20 and the isolation plate 10 are not too loose to cause the bus bar 20 to fall off from the isolation plate 10, and at the same time, the bus bar 20 has enough movement to adapt to errors of stacking of the battery cells 201.
Optionally, the third position-limiting portion 123 may be provided with a hook 1230, and the second matching portion 212 may be provided with a first through hole 2120; or conversely, the third position-limiting part 123 can be provided with a first through hole 2120, and the second matching part 212 can be provided with a hook 1230.
In some embodiments, when the third position-limiting portion 123 is a hook 1230 and the second matching portion 212 is a first through hole 2120, the isolation plate 10 has a second through hole 17 corresponding to the first through hole 2120, the hook 1230 includes a cantilever 1231 and a fastening portion 1232 connected to the cantilever, the cantilever 1231 is disposed on the isolation plate 10 and is disposed corresponding to the second through hole 17, and the fastening portion 1232 is fastened to the first through hole 2120.
Like this, pothook 1230 can hang in second through-hole 17, thereby the block portion 1232 of pothook 1230 not only passes through clearance fit with first through-hole 2120 and provides certain movable allowance for the movement of converging piece 20, simultaneously, the cantilever 1231 of pothook 1230 provides movable allowance for pothook 1230 reciprocates along the thickness direction for the hanging of converging piece 20 can utilize pothook 1230 to connect in division board 10 simultaneously can move a little about the thickness direction, thereby adapt to the thickness error of a plurality of battery monomer 201, further improve battery module 2's equipment precision.
In combination with the above, the division board assembly 1 of this application, when spacing portion 12, cooperation portion 21 set up to a plurality of, through the structure of different grade type, for example, the spacing portion 12 of part, cooperation portion 21 adopts the arch, the recess cooperation mode, the spacing portion 12 of part, cooperation portion 21 adopt the pothook, the through-hole cooperation mode, thereby can adopt the structure of different grade type to cooperate according to the different positions of division board 10, reduce the structural design degree of difficulty of this division board 10, and reduce the cooperation degree of difficulty of division board 10 and piece 20 that converges.
In some embodiments, the bus bar 20 includes a first connecting portion 24 and a second connecting portion 25 connected in sequence, the first connecting portion 24 is mounted on the isolation plate 10, and the plurality of matching portions 21 are disposed on the first connecting portion 24. The second connecting portion 25 extends at least partially outside the separator 10 for connecting to the output pole base 204.
By dividing the first connection portion 24 and the second connection portion 25, two areas can be quickly divided when the bus bar 20 is mounted, so that the wire harness 203 is connected to the bus bar 20 at the first connection portion 24, and the output pole base 204 is connected to the bus bar 20 at the second connection portion 25.
Alternatively, a through hole may be provided on the second connecting portion 25, and the bus bar 20 is connected to the output pole base 204 by a connecting member (e.g., a bolt, a screw, etc.), and the output pole base 204 is used for connecting an electrical appliance (not shown) outside the battery module 2 to electrically connect with the electrical appliance and supply power thereto.
In some embodiments, the bus bar 20 is disposed above the bottom plate 13, at least a portion of the first connecting portion 24 overlaps the mounting region 16, and the length of the overlapping portion of the bus bar 20 and the mounting region 16 accounts for 1/2 to 1/3 of the length of the bus bar 20 along the length direction of the partition board 10; and/or the length of the overlapping part of the bus bar 20 and the mounting area 16 in the width direction of the isolation plate 10 accounts for 1/2 to 1/3 of the width of the bus bar 20.
By arranging a part of the bus bar 20 to overlap the mounting area 16, and thus suspending the other part (including at least the second connecting portion 25) of the bus bar 20 from the bottom plate 13 of the partition board 10, on one hand, a sufficient overlapping area of the bus bar 20 and the partition board 10 is ensured, and the connecting strength of the bus bar 20 and the partition board 10 is ensured; on the other hand, the connection structure of the bus bar 20 and the isolation plate 10 can be simplified, the limitation of the isolation plate 10 on the bus bar 20 is reduced, and the bus bar 20 can still have a certain movement margin after being installed on the isolation plate 10, so that the error generated when the battery cells 201 are stacked can be adapted, and the assembly precision of the battery module 2 can be improved.
In a second aspect, please refer to fig. 1, the present invention further discloses a battery module 2, wherein the battery module 2 includes a battery pack 202, a wire harness 203 and the partition board assembly 1 according to the first aspect. The battery pack 202 includes a plurality of battery cells 201 arranged in sequence, and the wire harness is used for acquiring parameters of the battery cells 201. The wiring harness isolation board assembly 1 is arranged at the top of the battery pack 202, the isolation board assembly 1 comprises two bus pieces 20, and along the degree direction of the isolation board 10, the two bus pieces 20 are respectively arranged at two ends of the isolation board 10 and are respectively connected with the battery monomers 201 at two ends of the isolation board 10, wherein the arrangement direction of the battery monomers is parallel to the length direction of the isolation board 10.
Through setting up above-mentioned division board subassembly 1, can make to converge piece 20 and battery monomer 201 counterpoint and welding better, avoid appearing the problem that the two is difficult to counterpoint, reduce the error that battery monomer 201 piled up the production.
In some embodiments, the first mounting portion 14 includes a first upright plate 141 and a second upright plate 142 that are spaced apart from each other, a second notch 143 is formed between the first upright plate 141 and the second upright plate 142, and the wiring harness 203 is inserted through the second notch 143. The first limiting portion 121 is disposed on the first vertical plate 141, the second limiting portion 122 is disposed on at least one of the first vertical plate 141 and the second mounting portion 15, and the third limiting portion 123 is disposed on the second vertical plate 142. By arranging the first mounting portion 14 as the first vertical plate 141 and the second vertical plate 142 and forming the second notch 143, the second notch 143 can allow the wiring harness 203 to pass through, so that the connection between the wiring harness 203 and the bus bar 20 is facilitated, and the parameters of the battery cell 201 can be acquired.
The above detailed descriptions are given to the separator assembly and the battery module disclosed in the embodiments of the present invention, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the separator assembly and the battery module and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims (12)

1. A separator assembly, characterized in that the separator assembly is applied to a battery module, the separator assembly comprising:
the isolation plate is provided with at least one limiting part; and
at least one piece that converges, converge the piece install in the division board, converge the piece and be equipped with at least one cooperation portion, at least one cooperation portion with the swing joint of at least one spacing portion one-to-one respectively.
2. The separator plate assembly of claim 1, wherein said separator plate is provided with a plurality of retaining portions, said bus bar is provided with a plurality of engaging portions, and said retaining portions and said engaging portions are movably connected in at least two directions of the length, width and thickness directions of said separator plate, respectively.
3. The separator plate assembly according to claim 2, wherein the plurality of spacing portions comprise a first spacing portion, a second spacing portion, and a third spacing portion, and the separator plate comprises a base plate and a first mounting portion and a second mounting portion provided to the base plate;
the first installation part extends along the length direction of the bottom plate, the second installation part extends along the width direction of the bottom plate and is connected with the first installation part, so that an installation area is formed among the bottom plate, the first installation part and the second installation part, and the installation area is used for installing the confluence piece;
the first spacing portion and the third spacing portion are arranged in the first installation portion, and the second spacing portion is arranged in at least one of the first installation portion and the second installation portion.
4. The separator plate assembly according to claim 3, wherein said plurality of engaging portions comprise a first engaging portion, one of said first limiting portion and said first engaging portion is a protrusion, the other of said first limiting portion and said first engaging portion is a first notch, said first notch is engaged with said protrusion, an opening width of said first notch is greater than a width of said protrusion, and a difference between said opening width of said first notch and said protrusion width is greater than 0.3mm and less than 1.5 mm.
5. The separator plate assembly according to claim 4, wherein said bus bar has a first side extending along a length direction of said separator plate and adjacent to said first position-limiting portion, said first position-limiting portion is said protrusion, said first engaging portion is said first notch, said protrusion extends along a thickness direction of said separator plate, and said first notch is disposed at said first side.
6. The separator plate assembly according to claim 5, wherein the second limiting portion comprises a first protruding portion, the first protruding portion is disposed on the first mounting portion, the first protruding portion is located above the first limiting portion and extends along the length direction of the separator plate, a first mounting gap is formed between the second limiting portion and the bottom plate, the first side edge is clamped in the first mounting gap, the gap width of the first mounting gap is greater than the thickness of the first side edge, and the difference between the gap width of the first mounting gap and the thickness of the first side edge is greater than 0.3mm and less than 1.5 mm.
7. The partition board assembly of claim 3, wherein the second limiting portion includes a second protruding portion extending in the width direction of the partition board, the second protruding portion is disposed on the second mounting portion, the bus bar has a second side edge extending in the width direction of the partition board and close to the second protruding portion, the second protruding portion is spaced from the bottom board to form a second mounting gap, the second side edge is engaged with the second mounting gap, the gap width of the second mounting gap is greater than the second side edge thickness, and the gap width of the second mounting gap and the thickness difference of the second side edge are greater than 0.5mm and less than 1.5 mm.
8. The partition board assembly according to claim 3, wherein the plurality of engaging portions include a second engaging portion, one of the third limiting portion and the second engaging portion is a hook, the other of the third limiting portion and the second engaging portion is a first through hole, the hook is engaged with the first through hole, and along the width direction of the partition board, the width of the portion of the hook located in the first through hole is smaller than the width of the first through hole, and the difference between the width of the first through hole and the width of the portion of the hook located in the first through hole is greater than 0.3mm and less than 1.5 mm.
9. The partition board assembly according to claim 8, wherein when the third position-limiting portion is the hook, and the second engaging portion is the first through hole, the partition board is provided with a second through hole corresponding to the first through hole, the hook includes a cantilever and a engaging portion connected to the cantilever, the cantilever is disposed in the first mounting portion and disposed in the second through hole, and the engaging portion is engaged with the first through hole.
10. The separator plate assembly according to any one of claims 3-9, wherein said bus bar comprises a first connecting portion and a second connecting portion connected in series, said first connecting portion being mounted to said separator plate, said plurality of mating portions being provided to said first connecting portion;
the second connecting portion extends at least partially outside the partition plate.
11. A battery module, comprising:
the battery pack comprises a plurality of battery monomers which are sequentially arranged;
the wire harness is used for acquiring parameters of the battery monomer; and
the separator plate assembly according to any one of claims 3 to 10, which is disposed on the top of the battery pack, and comprises two bus bars, wherein the two bus bars are disposed at both ends of the separator plate, respectively, and are connected to the battery cells located at both ends of the separator plate, respectively, along the length direction of the separator plate, and wherein the plurality of battery cells are arranged in a direction parallel to the length direction of the separator plate.
12. The battery module according to claim 11, wherein the first mounting portion includes a first vertical plate and a second vertical plate that are spaced apart from each other, a second notch is formed between the first vertical plate and the second vertical plate, and the wire harness is inserted into the second notch;
the first limiting portion is arranged on the first vertical plate, the second limiting portion is arranged on at least one of the first vertical plate and the second mounting portion, and the third limiting portion is arranged on the second vertical plate.
CN202222942873.7U 2022-11-01 2022-11-01 Partition plate assembly and battery module Active CN218602661U (en)

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CN202222942873.7U CN218602661U (en) 2022-11-01 2022-11-01 Partition plate assembly and battery module
PCT/CN2023/128204 WO2024093973A1 (en) 2022-11-01 2023-10-31 Isolation plate assembly and battery module

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116417763A (en) * 2023-05-31 2023-07-11 深圳海辰储能控制技术有限公司 Energy storage device, power utilization system and energy storage system
WO2024093973A1 (en) * 2022-11-01 2024-05-10 厦门海辰储能科技股份有限公司 Isolation plate assembly and battery module

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Publication number Priority date Publication date Assignee Title
CN208028110U (en) * 2018-02-26 2018-10-30 长城汽车股份有限公司 Harness isolation board and power battery pack
CN109728237B (en) * 2018-12-29 2022-03-22 蜂巢能源科技有限公司 Bus bar support of battery module
CN111048713A (en) * 2019-12-18 2020-04-21 福建省汽车工业集团云度新能源汽车股份有限公司 Battery module pencil isolation board subassembly and battery module thereof
CN113889713A (en) * 2020-07-03 2022-01-04 莫仕连接器(成都)有限公司 Battery connection module
CN218602661U (en) * 2022-11-01 2023-03-10 厦门海辰储能科技股份有限公司 Partition plate assembly and battery module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024093973A1 (en) * 2022-11-01 2024-05-10 厦门海辰储能科技股份有限公司 Isolation plate assembly and battery module
CN116417763A (en) * 2023-05-31 2023-07-11 深圳海辰储能控制技术有限公司 Energy storage device, power utilization system and energy storage system
CN116417763B (en) * 2023-05-31 2023-12-22 深圳海辰储能控制技术有限公司 Energy storage device, power utilization system and energy storage system

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