CN220138658U - Busbar assembly and battery assembly - Google Patents
Busbar assembly and battery assembly Download PDFInfo
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- CN220138658U CN220138658U CN202321701544.1U CN202321701544U CN220138658U CN 220138658 U CN220138658 U CN 220138658U CN 202321701544 U CN202321701544 U CN 202321701544U CN 220138658 U CN220138658 U CN 220138658U
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- assembly
- cells
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- 230000001681 protective effect Effects 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
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- 229920001169 thermoplastic Polymers 0.000 claims description 2
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- 230000005611 electricity Effects 0.000 claims 2
- 239000004033 plastic Substances 0.000 abstract description 16
- 229920003023 plastic Polymers 0.000 abstract description 16
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000000071 blow moulding Methods 0.000 abstract description 2
- 239000011265 semifinished product Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
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- -1 polyethylene terephthalate Polymers 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
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- 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
Abstract
The utility model belongs to the technical field of batteries, and discloses a busbar assembly and a battery assembly. The busbar assembly comprises a conductive assembly and an insulating film, wherein the conductive assembly comprises a plurality of conductive bars which are arranged at intervals along a first direction, the conductive bars comprise a plurality of conductive pieces which are arranged along a second direction and are connected, the conductive pieces comprise connecting parts and conductive units, and the conductive units are used for conducting connection between two adjacent electric cores along the first direction; the insulating film covers on the conductive assembly so that the conductive rows are connected integrally, the insulating film covers each connecting part in the conductive assembly, and the insulating film is provided with a hollow area corresponding to each conductive unit so that each conductive unit is exposed. The insulating film is connected with the plurality of conductive bars and realizes insulation protection, and the conductive bars are installed without arranging plastic parts or blow molding parts, so that the cost is low and the structure is reliable.
Description
The utility model claims priority from patent application No. 202211352824.6 (the date of application of the prior application is 2022, 11, 1, and the name of the utility model is bus bar assembly and battery assembly).
Technical Field
The utility model relates to the technical field of batteries, in particular to a busbar assembly and a battery assembly.
Background
At present, a busbar in a battery module comprises a plurality of conductive pieces, each conductive piece is provided with a positive conductive unit and a negative conductive unit, the conductive pieces are electrically connected with two adjacent electric cores, the positive conductive units in the conductive pieces are connected with the positive electrode of one electric core, and the negative conductive units are connected with the negative electrode of the other electric core so as to connect the two adjacent electric cores in series.
In the related art, an integral support or a plastic suction member is generally used as a carrier of the busbar to improve the stability of a plurality of conductive members, and the following defects exist in the design:
1. in order to avoid the conductive member to connect the positive electrode and the negative electrode of the same battery cell, the support or the plastic sucking member needs to be provided with a groove and a hole structure matched with the busbar so as to insulate other positions of the conductive member from the battery cell, so that the structure of the support or the plastic sucking member is complex, the support and the plastic sucking member need to be processed by using a die, the die opening cost is high, the die is difficult to modify, and the required processing period is long;
2. because there is processing error in support or plastic uptake spare, there is the error after leading to busbar and support or plastic uptake spare to assemble, the busbar exists the positive and negative pole overlap joint with the electric core and leads to the risk of electric core short circuit.
Disclosure of Invention
The utility model aims to provide a busbar assembly and a battery assembly, which are used for solving the problems of high processing cost, long period and short circuit risk of a battery cell caused by using a support or a plastic suction piece as a busbar carrier.
To achieve the purpose, the utility model adopts the following technical scheme:
a busbar assembly comprising:
the conductive assembly comprises a plurality of conductive bars which are arranged at intervals along a first direction, the conductive bars comprise a plurality of conductive pieces which are arranged along a second direction and connected, the conductive pieces comprise a connecting part and conductive units, and the conductive units are used for conductively connecting two adjacent electric cores along the first direction;
the insulating film covers on the conductive assembly so that the conductive bars are integrally connected, the insulating film covers each connecting part in the conductive assembly, and the insulating film is provided with a hollow area corresponding to each conductive unit so that each conductive unit is exposed.
As an alternative of the busbar assembly, the conductive unit includes a positive conductive unit and a negative conductive unit respectively located at two ends of the connection portion, the positive conductive unit is used for connecting with a positive electrode of one of the two adjacent cells along the first direction, and the negative conductive unit is used for connecting with a negative electrode of the other of the two adjacent cells along the first direction; the insulating film is provided with the hollowed-out areas corresponding to each positive electrode conductive unit and each negative electrode conductive unit, so that each positive electrode conductive unit and each negative electrode conductive unit are exposed.
As an alternative to the above busbar assembly, the insulating film covers at least a side surface of the connection portion facing the battery cell.
As an alternative to the above busbar assembly, the connection portion protrudes in a direction away from the battery cell to form a protruding portion.
As an alternative to the above busbar assembly, the protruding portion is located between two adjacent cells connected by the conductive member where the protruding portion is located.
As an alternative to the above busbar assembly, the conductive assemblies are provided in plurality and spaced apart along the second direction, and each of the conductive assemblies is provided with the insulating film correspondingly.
As an alternative to the above busbar assembly, the insulating film and the conductive assembly are fixed by a thermoplastic process.
A battery assembly, comprising:
a cell module comprising a plurality of cell modules arranged along a second direction, each cell module comprising a plurality of cells arranged along a first direction;
in the above busbar assembly, the conductive bars are used for connecting the corresponding electric cores in the plurality of electric core assemblies in parallel, and connecting two adjacent electric cores in the same electric core assembly in series.
As an alternative scheme of the battery assembly, two electric cores positioned at two ends of the electric core assembly are end electric cores, at least part of the end electric cores positioned at one end of the electric core assembly are input electric cores, and at least part of the end electric cores positioned at the other end of the electric core assembly are output electric cores;
the battery assembly further includes:
the bus bar assembly is arranged between the two output bus bars, and one of the two output bus bars is connected with the input end battery cell so as to connect a plurality of input end battery cells in parallel; and the other is connected with the output end cell so as to connect a plurality of the output end cells in parallel.
As an alternative to the above battery assembly, the battery assembly further includes:
the bus bar assembly comprises two supports which are oppositely arranged along a first direction, wherein the supports can be fixed on the end battery cell, avoidance holes which correspond to the anode and the cathode on the end battery cell are formed in the supports, the bus bar assembly is arranged between the two supports, and the output bus bar is arranged on the supports.
As an alternative scheme of the battery assembly, a battery cell profiling groove is formed in the bottom surface of the support, the end battery cell can be inserted into the battery cell profiling groove, and the avoidance hole is formed in the bottom surface of the battery cell profiling groove.
As an alternative to the above battery assembly, the battery assembly further includes:
and each support is provided with a serial bus bar, and the serial bus bars are used for electrically connecting the end battery cells which are not connected with the output bus bars in the battery cell module.
As an alternative of the above battery assembly, the top surface of the support is provided with a positioning groove, and the output bus bar and the serial bus bar are both disposed in the positioning groove.
As an alternative scheme of the above battery assembly, the positioning slot includes a first positioning section and a second positioning section, the shape and size of the first positioning section are adapted to the shape and size of the output bus bar, and the output bus bar is disposed in the first positioning section;
the shape and the size of the second positioning section are matched with those of the serial bus bars, and the serial bus bars are arranged in the second positioning section.
As an alternative scheme of the battery assembly, positioning columns are arranged in the positioning grooves corresponding to the output bus bars and the serial bus bars, and positioning holes capable of being matched with the positioning columns are formed in the output bus bars and the serial bus bars.
As an alternative scheme of the battery assembly, the battery assembly further comprises a flexible circuit board, the flexible circuit board is arranged on the support, one of the flexible circuit board and the support is provided with a fool-proof positioning hole, and the other is provided with a fool-proof positioning column, and the fool-proof positioning column is inserted into the fool-proof positioning hole.
As an alternative to the above battery assembly, the battery assembly further includes a fixing member detachably assembled on the support, and the fixing member is used for installing the collection harness connector.
As an alternative scheme of the battery assembly, the support is provided with a chute, the chute penetrates through the end face of the support along the first direction, the fixing piece is provided with a sliding rail, and the sliding rail can be slidably installed in the chute.
As an alternative of the above battery assembly, the fixing member is fastened and fixed to the support.
As an alternative scheme of the above battery assembly, the fixing member is disposed on a side surface of the support, a through hole penetrating along the first direction is formed in the support, and the flexible circuit board located on the top surface of the support penetrates through the through hole and is fixed in the fixing member.
As an alternative scheme of the battery assembly, the fixing member is provided with a limiting groove with one end open, and at least part of the end portion of the flexible circuit board extending from the through hole is inserted into the limiting groove.
As an alternative to the above battery assembly, the battery assembly further includes:
the protection seat is arranged on the support and is used for fixing the end part of the output busbar;
the protective cover is detachably arranged on the protective seat.
As an alternative scheme of the battery assembly, two opposite sides of the protective cover are provided with downward extending clamping arms, clamping holes are formed in the clamping arms, buckles are arranged on the protective seat, and the buckles are in clamping fit with the corresponding clamping holes in the clamping arms.
As an alternative scheme of the battery assembly, the battery cell module further comprises a tray for supporting the battery cell, and a supporting portion is arranged on the support and is fixed with the tray.
The utility model has the beneficial effects that:
in the busbar assembly provided by the utility model, the plurality of conductive bars are connected through the insulating film, insulation protection is realized, no plastic parts or blow molding parts are required to be arranged for installing the conductive bars, the production cost is reduced, and the insulating film has a good insulation protection effect.
The battery assembly provided by the utility model adopts the busbar assembly, and has low cost and reliable structure.
Drawings
FIG. 1 is a top view of a busbar assembly provided by the present utility model;
FIG. 2 is a top view of a conductive strip provided by the present utility model;
FIG. 3 is a top view of a conductive assembly provided by the present utility model;
fig. 4 is a top view of an insulating film provided by the present utility model;
FIG. 5 is a top view of a semi-finished product provided by the present utility model;
fig. 6 is a plan view of the insulating film provided by the present utility model when attached to a semi-finished product;
FIG. 7 is a schematic view of a bus bar assembly according to the present utility model;
FIG. 8 is an enlarged view of a portion of FIG. 7 at A;
fig. 9 is a schematic view of a battery assembly according to the present utility model;
fig. 10 is a schematic structural view of a battery assembly according to the present utility model without a battery module;
FIG. 11 is a schematic view of a structure of a stand provided by the present utility model;
FIG. 12 is a second schematic view of the structure of the support provided by the present utility model;
FIG. 13 is a partial enlarged view at B in FIG. 11;
fig. 14 is a schematic structural view of the protective cover provided by the utility model when assembled on a support.
In the figure:
10. a busbar assembly; 101. a semi-finished product; 11. a conductive bar; 111. a positive electrode conductive unit; 112. a negative electrode conductive unit; 113. a connection part; 114. a boss; 12. an insulating film; 121. a shielding part; 122. hollow areas; 20. a bracket; 21. a support; 211. a first positioning section; 212. a second positioning section; 213. fool-proof positioning holes; 214. a through hole; 215. a chute; 22. a fixing member; 221. a clamping hook; 222. a limit groove; 223. a slide rail; 23. a support part; 24. a protective cover; 241. a protection seat; 2411. a buckle; 242. a protective cover; 2421. a clamping arm; 30. an output bus; 40. a serial bus; 50. a flexible circuit board; 60. a battery cell module; 61. a tray; 62. and a battery cell.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The present embodiment provides a buss bar assembly 10 for connecting a plurality of electrical cells 62 arranged in a plurality of rows. As shown in fig. 1 to 4, the busbar assembly 10 includes a conductive assembly and an insulating film 12. The conductive assembly includes a plurality of conductive bars 11 disposed at intervals along the first direction X, each conductive bar 11 includes a plurality of conductive members arranged and connected along the second direction Y, each conductive member includes a connection portion 113 and a conductive unit for conductively connecting two adjacent cells 62 along the first direction X. Wherein the second direction Y is perpendicular to the first direction X. The insulating film 12 covers the conductive assembly to connect the plurality of conductive bars 11 arranged at intervals into a whole, and the insulating film 12 is provided with a hollow area 122 corresponding to each conductive unit to expose the conductive unit so as to contact with the positive electrode and the negative electrode of the battery cell 62.
In this embodiment, the plurality of conductor bars 11 that the interval set up are connected through insulating film 12, need not to use support or plastic uptake spare to support and fix, can save or reduce support or plastic uptake spare that uses, are favorable to controlling the processing cost, reduce the processing degree of difficulty, improve machining efficiency. The plurality of conductive bars 11 are connected together through the insulating film 12 to form an integrated structure, so that the assembly of the busbar assembly 10 can be facilitated, and the assembly efficiency can be improved. By covering the portion of the conductive bar 11 that is not in contact with the positive electrode and the negative electrode of the battery cell 62 with the insulating film 12, the conductive bar 11 can be prevented from overlapping the positive electrode and the negative electrode of the same battery cell 62, thereby preventing the battery cell 62 from being short-circuited.
Alternatively, the insulating film 12 may be made of an insulating material such as polyethylene terephthalate (Polyethylene Terephthalate, PET).
Specifically, as shown in fig. 2, the conductive units include a positive conductive unit 111 and a negative conductive unit 112 at both ends of the connection portion 113, the positive conductive unit 111 is used for connecting with the positive electrode of one 62 of the two adjacent cells 62 along the first direction X, and the negative conductive unit 112 is used for connecting with the negative electrode of the other 62 of the two adjacent cells 62 along the first direction X. Here, the broken lines in fig. 2 are only for illustrating the connection portion 113, the positive electrode conductive unit 111, and the negative electrode conductive unit 112 in the conductive member, and are not structural outline lines in the conductive member.
In this embodiment, the busbar assembly 10 is used in a battery assembly composed of cylindrical cells 62, and both the positive electrode and the negative electrode in the cylindrical cells 62 are disposed on the same axial end face of the cells 62. The battery assembly includes a cell module 60, the cell module 60 including a plurality of cell assemblies arranged along the second direction Y, each cell assembly including a plurality of cells 62 arranged along the first direction X.
For convenience in describing the mating relationship between the busbar assembly 10 and the cell module 60, as shown in fig. 3, the conductive bar 11 includes four conductive members connected to each other, and the four conductive members are respectively mated with the cells 62 at corresponding positions in the four cell modules, that is, one conductive bar 11 connects the cells 62 at corresponding positions in the four cell modules in parallel. The positive conductive element 111 in each conductive member is connected to the positive electrode of the previous cell 62 in the same cell assembly, and the negative conductive element 112 is connected to the negative electrode of the next cell 62 in the same cell assembly. I.e., each conductive element connects in series two adjacent cells 62 in the same cell assembly.
In other embodiments, the number of conductive members included in the conductive bars 11 and the number of conductive bars 11 may be set according to the number and arrangement of the battery cells 62 in the battery assembly, so as to be compatible with different types of battery assemblies.
Further, as shown in fig. 4, the insulating film 12 includes a shielding portion 121 and a hollowed portion 122, the shielding portion 121 covers and connects the connection portion 113 of each conductive bar 11, and the hollowed portion 122 is opposite to the positive electrode conductive unit 111 and the negative electrode conductive unit 112 so that the positive electrode conductive unit 111 and the negative electrode conductive unit 112 are exposed.
To avoid shorting of the cells 62, both the front and back sides of the conductive assembly in this embodiment are covered with an insulating film 12. In some embodiments, the insulating film 12 may cover at least a side surface of the connection portion 113 facing the battery cell 62.
The busbar assembly 10 provided in this embodiment has a simple structure, a simple processing technology, and is beneficial to improving production efficiency and reducing cost.
Specifically, in preparing the busbar assembly 10, a rolled sheet of conductive material may be flattened and cut into rectangular plates of a suitable size. Thereafter, the rectangular plate is processed into a semi-finished product 101 as shown in fig. 5 by punching, and the adjacent conductive bars 11 in the semi-finished product 101 are partially in a connected state to facilitate positioning and fixing with the insulating film 12.
Meanwhile, rectangular insulating layers of the same size are taken, and hollowed-out areas 122 are processed on the insulating layers through a die-cutting process, so that the insulating film 12 shown in fig. 4 is obtained. The non-welding area of the conductive assembly is wrapped through the die cutting profiling structure, so that the conductive bars 11 are connected into a whole, the insulation effect between the battery cell 62 and the conductive bars 11 can be ensured, the process difficulty is reduced, the cost is greatly reduced, and the industrialization efficiency is improved.
Finally, as shown in fig. 6, the insulating film 12 is attached to the semi-finished product 101, and the insulating film 12 is fixed to the semi-finished product 101 by a thermoplastic molding process. After the fixing, the connection positions of the two adjacent conductive bars 11 are cut off by a punching and bending process, so as to obtain a busbar assembly 10 as shown in fig. 1.
Further, as shown in fig. 7 and 8, in the press bending process, the protruding portion 114 is pressed on the connection portion 113, and the protruding portion 114 protrudes in a direction away from the battery cell 62. After the busbar assembly 10 is assembled with the cell module 60, the positive electrode conductive unit 111 on the same conductive piece is abutted with the positive electrode of the previous cell 62, the negative electrode conductive unit 112 is abutted with the negative electrode of the next cell 62, the protruding portion 114 is located between the two adjacent cells 62, the functions of buffering expansion force, tolerance and displacement between the two adjacent cells 62 can be achieved, the breakage of the conductive bar 11 is avoided, the toughness of the conductive bar 11 is improved, and the reliability of the busbar assembly 10 is high.
Optionally, a plurality of conductive assemblies are provided and are spaced along the second direction Y, and each conductive assembly is correspondingly provided with an insulating film 12 to be compatible with cell modules 60 of different specifications.
As shown in fig. 9 and 10, the present embodiment further provides a battery assembly including the battery module 60, the bracket 20, the output bus bar 30, the serial bus bar 40, and the bus bar assembly 10.
The support 20 comprises two holders 21 arranged opposite each other in the first direction X, the holders 21 being plastic or blow-molded, the holders 21 being arranged for mounting the output bus bar 30 and the series bus bar 40. In the embodiment, the two supports 21 and the insulating film 12 are matched cooperatively to replace an integrated plastic support in the prior art, the two supports 21 have smaller size than the plastic support, the upper structure of the support is less than the plastic support, and the support is convenient to process and low in cost; meanwhile, the insulating film 12 is connected with the plurality of conductive bars 11, so that the number of the conductive bars 11 can be conveniently adjusted, and the design has high compatibility. The output bus bar 30 and the series bus bar 40 are supported by the support 21, insulation protection of the output bus bar 30 and the series bus bar 40 is realized, insulation protection of the bus bar assembly 10 is realized by the insulating film 12, and electrical safety is ensured.
Two electric cores 62 at two ends of each electric core assembly are defined as end electric cores, the support 21 can be fixed on the end electric cores at the head end and the tail end of the electric core assembly, the avoidance holes are formed in each support 21, the avoidance holes can avoid the positive electrode and the negative electrode on the electric core 62, and therefore the electric cores 62 at the head end and the tail end are conveniently connected with other electric cores 62 in series and parallel.
An output bus bar 30 and a series bus bar 40 are provided on each support 21. The two output buses 30 may be used as input and output terminals, respectively, of a circuit formed by the series-parallel connection of the cells 62 in the battery assembly. Specifically, in the multi-row cell assembly, a portion of the end cells on one side form the input end of the cell module 60 and a portion of the end cells on the other side form the output end of the cell module 60. Of the two output buses 30, one output bus 30 is connected to the positive electrode of the end cell of the input end of the cell module 60, and the output bus 30 serves as a positive electrode output bus; another output bus bar 30 is connected to the negative electrode of the end cell at the output of the cell module 60, the output bus bar 30 acting as a negative output bus bar. The series buss bars 40 are used to connect the remaining end cells of the corresponding sides.
In other embodiments, the end cell of the input may be connected to the output bus bar 30 by a negative electrode, and correspondingly, the end cell of the output may be connected to the output bus bar 30 by a positive electrode.
In order to improve the fixing effect of the support 21, a battery core profiling groove is formed in the bottom surface of the support 21, and the end battery core of each battery core assembly can be inserted into the corresponding battery core profiling groove, so that the support 21 is more stable.
Further, the avoidance holes are provided at the bottom surface of the cell-like groove, so that the positive electrode and the negative electrode of the end cell can be conveniently contacted with the corresponding output bus bar 30 or the serial bus bar 40.
In this embodiment, the output bus bar 30 and the series bus bar 40 are fixed by the support 21, so that insulation protection can be realized, and the short circuit of the battery cell 62 can be avoided.
In order to further avoid the short circuit of the battery cell 62, as shown in fig. 11 and 12, the top surface of the support 21 is provided with a positioning groove, the positioning groove comprises a first positioning section 211 and a second positioning section 212, the first positioning section 211 is matched with the output bus bar 30 in shape and size, and the output bus bar 30 is installed in the first positioning section 211; the second positioning section 212 is adapted to the shape and size of the serial bus bar 40, and the serial bus bar 40 is installed in the second positioning section 212. By providing the positioning groove, positioning accuracy of the output bus bar 30 and the serial bus bar 40 can be ensured, and short circuit of the battery cell 62 due to dislocation of the output bus bar 30 and the serial bus bar 40 can be avoided.
Further, the positioning groove is internally provided with a positioning column, the output bus bar 30 and the serial bus bar 40 are respectively provided with a positioning hole, and the positioning column can be matched with the positioning holes so as to further improve the position accuracy and the fixing effect of the output bus bar 30 and the serial bus bar 40 on the support 21 and avoid dislocation of the output bus bar 30 and the serial bus bar 40.
Further, the battery assembly further comprises a flexible circuit board 50, the flexible circuit board 50 is arranged on the support 21, one of the flexible circuit board 50 and the support 21 is provided with a fool-proof locating hole 213, and the other is provided with a fool-proof locating column which is inserted into the fool-proof locating hole 213. Through setting up prevent slow-witted locating hole 213 and prevent slow-witted reference column, can guarantee the installation accuracy of flexible circuit board 50, can prevent again that the mounted position of flexible circuit board 50 is disordered, can reduce the assembly degree of difficulty.
To increase the modularity of the battery assembly, the cell module 60 includes a tray 61 for holding the cells 62, and the cells 62 are fixed on the tray 61 to be integrated into a module. In order to improve the stability of the fit between the busbar assembly 10 and the cell module 60, the support 21 is provided with a support portion 23, and the support portion 23 can be fixed with the tray 61 by screws, which is beneficial to ensuring the connection reliability of the output busbar 30 and the serial bus bar 40 with the end cell. The support 23 also improves the strength of the support 21, so that the structural strength of the entire battery assembly is improved.
In order to timely acquire the operating state of the battery assembly, the battery assembly further comprises a voltage and temperature acquisition wire harness. The existing plastic part is approximately of a flat plate structure, is thinner, cannot reliably install an acquisition harness connector, and therefore the acquisition harness connector is difficult to fix, and the signal acquisition reliability is poor.
To solve the above problem, the bracket 20 further includes a fixing member 22, and the fixing member 22 is used for mounting the collection harness connector. The mounting 22 is detachably arranged on the support 21 to provide an installation position for the collection wire harness connector, and after the collection wire harness connector and the mounting 22 are installed, the mounting 22 is fixed on the support 21, so that the installation of the collection wire harness connector is not limited, and the assembly is convenient.
In this embodiment, as shown in fig. 13, the fixing member 22 is slidably assembled with the support 21. The fixing member 22 is provided with a slide rail 223, the support 21 is provided with a slide groove 215 extending along the first direction, the slide groove 215 penetrates through one side end surface of the support 21, and the slide rail 223 can be slidably arranged in the slide groove 215 through the side end surface, so that the installation is convenient.
Further, at least a portion of the width of the chute 215 gradually decreases from top to bottom to cause the slot width of the chute 215 to shrink. The slide rail 223 is shaped to fit the slide slot 215. After the sliding rail 223 slides into the sliding groove 215, the side wall of the sliding groove 215 will apply an upward abutment force to the sliding rail 223, so as to prevent the sliding rail 223 from being separated from the sliding groove 215. Optionally, at least a portion of the runner 215 is a dovetail.
In order to further avoid the detachment of the fixing member 22 from the support 21, the fixing member 22 is engaged with the support 21 after being slidably mounted, so as to further improve the fixing effect of the support 21 and the fixing member 22. Illustratively, a clamping portion is disposed in the sliding slot 215, and a clamping groove is disposed on the sliding rail 223, and after the sliding rail 223 slides into the sliding slot 215, the clamping portion is clamped into the clamping groove to further fix the support 21 and the fixing member 22.
In this embodiment, the fixing piece 22 is fixed by adopting a sliding installation and matching clamping connection, so that the fixing piece 22 can be ensured to be firmly installed on the support 21, the collection wire harness connector is convenient to install, and the reliability of signal collection is ensured.
Alternatively, the collection harness connector may be secured to the mount 22 by a snap fit. As shown in fig. 13, the fixing member 22 is provided with a hook 221, and the hook 221 is used for clamping the collection harness connector.
Further, the support 21 is further provided with a through hole 214 penetrating in the first direction, and an end portion of the flexible circuit board 50 located on the top surface of the support 21 can extend into a side portion of the support 21 through the through hole 214 and be fixed in the fixing member 22.
In order to improve the fixing effect of the end of the flexible circuit board 50 on the fixing member 22, the fixing member 22 is provided with a limiting groove 222, the upper end of the limiting groove 222 is open, and at least part of the end of the flexible circuit board 50 extending from the through hole 214 can extend into the limiting groove 222 to fix the flexible circuit board 50.
In order to protect the end of the output bus bar 30, as shown in fig. 14, the battery assembly further includes a protection cover 24, the protection cover 24 includes a protection seat 241 and a protection cover 242, the protection seat 241 is disposed on the support 21, and the protection seat 241 is used for fixing the end of the output bus bar 30; the protective cover 242 is disposed on the protective base 241, and an end portion of the output bus bar 30 is disposed between the protective base 241 and the protective cover 242, so as to protect the output bus bar 30 by the cooperation of the protective base 241 and the protective cover 242.
Further, the protection cover 242 is detachably connected to the protection seat 241, so as to facilitate the disassembly and assembly of the end portion of the output bus bar 30. Specifically, the protecting seat 241 is provided with a buckle 2411, the protecting cover 242 is provided with two downwardly extending clamping arms 2421, and the clamping arms 2421 are provided with clamping holes. When the protection cover 242 is assembled with the protection seat 241, the clamping arms 2421 are forced to deform in the process of covering the protection cover 242 on the protection seat 241 from top to bottom, and the distance between the two clamping arms 2421 is increased until the buckle 2411 stretches into the clamping hole, and the protection cover 242 is assembled with the protection seat 241 in place. The protection cover 242 and the protection seat 241 are fixed in the above manner, so that not only can the disassembly and assembly be facilitated, but also the output end of the output bus bar 30 can be well protected.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (24)
1. The busbar subassembly, its characterized in that includes:
the conductive assembly comprises a plurality of conductive bars (11) which are arranged at intervals along a first direction, the conductive bars (11) comprise a plurality of conductive pieces which are arranged along a second direction and are connected, the conductive pieces comprise connecting parts (113) and conductive units, and the conductive units are used for conducting connection of two adjacent electric cores (62) along the first direction;
the insulating film (12) covers on the conductive assembly so that the conductive rows (11) are integrally connected, the insulating film (12) covers each connecting part (113) in the conductive assembly, and the insulating film (12) is provided with a hollow area (122) corresponding to each conductive unit so that each conductive unit is exposed.
2. The busbar assembly according to claim 1, wherein the conductive units include a positive conductive unit (111) and a negative conductive unit (112) respectively located at both ends of the connection portion (113), the positive conductive unit (111) being for connection with a positive electrode of one of the cells (62) of the two cells (62) adjacent in the first direction, the negative conductive unit (112) being for connection with a negative electrode of the other of the cells (62) adjacent in the first direction; the insulating film (12) is provided with the hollowed-out area (122) corresponding to each positive electrode conductive unit (111) and each negative electrode conductive unit (112), so that each positive electrode conductive unit (111) and each negative electrode conductive unit (112) are exposed.
3. The busbar assembly according to claim 1 or 2, wherein the insulating film (12) covers at least a side surface of the connection portion (113) facing the battery cell (62).
4. The busbar assembly according to claim 1 or 2, characterized in that the connection portion (113) protrudes in a direction away from the cell (62) to form a protruding portion (114).
5. The busbar assembly of claim 4, wherein the boss (114) is located between two adjacent cells (62) to which the conductive member is connected.
6. The busbar assembly according to claim 1 or 2, wherein a plurality of the conductive assemblies are provided and are arranged at intervals along the second direction, each of the conductive assemblies being provided with the insulating film (12) correspondingly.
7. The busbar assembly according to claim 1 or 2, wherein the insulating film (12) and the conductive assembly are fixed by a thermoplastic process.
8. A battery assembly, comprising:
a battery cell module (60) comprising a plurality of battery cell assemblies arranged along a second direction, each of the battery cell assemblies comprising a plurality of battery cells (62) arranged along a first direction;
the busbar assembly of any of claims 1-7, the conductive strip (11) being configured to connect the cells (62) of a plurality of the cell assemblies in parallel at corresponding locations and connect adjacent two of the cells (62) of the same cell assembly in series.
9. The battery assembly according to claim 8, wherein two of the cells (62) at both ends of the cell assembly are end cells, at least part of the end cells at one end of the cell module (60) are input end cells, and at least part of the end cells at the other end of the cell module (60) are output end cells;
the battery assembly further includes:
two output buses (30), wherein the bus bar assembly is arranged between the two output buses (30), and one of the two output buses (30) is connected with the input end battery cell so as to connect a plurality of input end battery cells in parallel; and the other is connected with the output end cell so as to connect a plurality of the output end cells in parallel.
10. The battery assembly of claim 9, wherein the battery assembly further comprises:
two supports (21) that set up relatively along the first direction, support (21) can be fixed on the tip electricity core, be provided with on support (21) and dodge corresponding positive pole and the hole of dodging of negative pole on the tip electricity core, busbar subassembly sets up in two between support (21), output busbar (30) set up on support (21).
11. The battery assembly according to claim 10, wherein the bottom surface of the support (21) is provided with a cell profiling groove, the end cell can be inserted into the cell profiling groove, and the avoidance hole is provided at the bottom surface of the cell profiling groove.
12. The battery assembly of claim 10, wherein the battery assembly further comprises:
and the serial buses (40) are arranged on each support (21), and the serial buses (40) are used for electrically connecting the end battery cells which are not connected with the output buses (30) in the battery cell module (60).
13. The battery assembly according to claim 12, wherein the top surface of the support (21) is provided with a positioning groove, and the output bus bar (30) and the series bus bar (40) are both disposed in the positioning groove.
14. The battery assembly of claim 13, wherein the positioning slot comprises a first positioning section (211) and a second positioning section (212), the first positioning section (211) is shaped and sized to fit the shape and size of the output bus bar (30), and the output bus bar (30) is disposed within the first positioning section (211);
the shape and the size of the second positioning section (212) are matched with those of the serial bus bar (40), and the serial bus bar (40) is arranged in the second positioning section (212).
15. The battery assembly according to claim 13, wherein positioning posts are provided in the positioning slots corresponding to the output bus bar (30) and the serial bus bar (40), and the output bus bar (30) and the serial bus bar (40) are provided with positioning holes capable of being matched with the positioning posts.
16. The battery assembly according to any one of claims 10-15, further comprising a flexible circuit board (50), the flexible circuit board (50) being arranged on the support (21), one of the flexible circuit board (50) and the support (21) being provided with a fool-proof positioning hole (213), the other being provided with a fool-proof positioning post, the fool-proof positioning post being inserted into the fool-proof positioning hole (213).
17. The battery assembly of claim 16, further comprising a fixture (22), the fixture (22) being removably mounted to the support (21), the fixture (22) being configured to mount an acquisition harness connector.
18. The battery assembly according to claim 17, wherein the support (21) is provided with a chute (215), the chute (215) penetrates through the end face of the support (21) along the first direction, the fixing member (22) is provided with a sliding rail (223), and the sliding rail (223) can be slidably mounted in the chute (215).
19. The battery assembly according to claim 17, wherein the fixing member (22) is snap-fastened to the support (21).
20. The battery assembly according to claim 17, wherein the fixing member (22) is disposed on a side surface of the support (21), a through hole (214) penetrating in the first direction is formed in the support (21), and the flexible circuit board (50) disposed on the top surface of the support (21) is disposed through the through hole (214) and fixed in the fixing member (22).
21. The battery assembly according to claim 20, wherein the fixing member (22) is provided with a limit groove (222) having one end opened, and at least a part of the end portion of the flexible circuit board (50) protruding from the through hole (214) is inserted into the limit groove (222).
22. The battery assembly of any one of claims 10-15, wherein the battery assembly further comprises:
a protection seat (241) arranged on the support (21), wherein the protection seat (241) is used for fixing the end part of the output busbar (30);
and the protective cover (242) is detachably arranged on the protective seat (241).
23. The battery assembly according to claim 22, wherein opposite sides of the protective cover (242) are provided with downwardly extending clamping arms (2421), clamping holes are provided on the clamping arms (2421), a buckle (2411) is provided on the protective seat (241), and the buckle (2411) is in clamping fit with the corresponding clamping holes on the clamping arms (2421).
24. The battery assembly according to any one of claims 10-15, wherein the cell module (60) further comprises a tray (61) for holding the cells (62), the support (21) is provided with a support portion (23), and the support portion (23) is fixed to the tray (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2023/122625 WO2024037661A1 (en) | 2022-11-01 | 2023-09-28 | Busbar component and battery assembly |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022113528246 | 2022-11-01 | ||
| CN202211352824.6A CN115411468A (en) | 2022-11-01 | 2022-11-01 | Busbar assembly and battery assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220138658U true CN220138658U (en) | 2023-12-05 |
Family
ID=84168473
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211352824.6A Pending CN115411468A (en) | 2022-11-01 | 2022-11-01 | Busbar assembly and battery assembly |
| CN202321701544.1U Active CN220138658U (en) | 2022-11-01 | 2023-06-30 | Busbar assembly and battery assembly |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211352824.6A Pending CN115411468A (en) | 2022-11-01 | 2022-11-01 | Busbar assembly and battery assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN115411468A (en) |
| WO (1) | WO2024037661A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411468A (en) * | 2022-11-01 | 2022-11-29 | 惠州亿纬锂能股份有限公司 | Busbar assembly and battery assembly |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101093696B1 (en) * | 2009-12-01 | 2011-12-15 | 삼성에스디아이 주식회사 | Rechargeable battery |
| JP5813430B2 (en) * | 2011-09-13 | 2015-11-17 | 矢崎総業株式会社 | Connecting member for power supply body, bus bar module, and power supply device including the bus bar module |
| KR102169631B1 (en) * | 2017-03-21 | 2020-10-23 | 주식회사 엘지화학 | Battery module, battery pack comprising the battery module and vehicle comprising the battery pack |
| CN115051118A (en) * | 2018-12-29 | 2022-09-13 | 东莞莫仕连接器有限公司 | Battery connection module |
| CN211045563U (en) * | 2019-10-22 | 2020-07-17 | 中航光电科技股份有限公司 | Half-wrapped film-pasted wire harness board assembly and battery module |
| CN215342872U (en) * | 2021-03-11 | 2021-12-28 | 厦门市铂联科技股份有限公司 | Integrated FPC assembly of power battery module |
| CN114566764A (en) * | 2022-01-25 | 2022-05-31 | 湖北亿纬动力有限公司 | Busbar subassembly and big cylinder power battery module |
| CN217062401U (en) * | 2022-04-19 | 2022-07-26 | 中创新航科技股份有限公司 | Wire harness board and battery pack |
| CN115411468A (en) * | 2022-11-01 | 2022-11-29 | 惠州亿纬锂能股份有限公司 | Busbar assembly and battery assembly |
-
2022
- 2022-11-01 CN CN202211352824.6A patent/CN115411468A/en active Pending
-
2023
- 2023-06-30 CN CN202321701544.1U patent/CN220138658U/en active Active
- 2023-09-28 WO PCT/CN2023/122625 patent/WO2024037661A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN115411468A (en) | 2022-11-29 |
| WO2024037661A1 (en) | 2024-02-22 |
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