CN209929392U

CN209929392U - Connection structure and battery module of laminate polymer battery module and busbar assembly

Info

Publication number: CN209929392U
Application number: CN201920855723.8U
Authority: CN
Inventors: 丁大圣; 李政道; 马克明; 翁欣迪; 马坤
Original assignee: Ningbo Levi Energy Storage System Co Ltd
Current assignee: Ningbo Levi Energy Storage System Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-01-10
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a connection structure and battery module of laminate polymer battery module and busbar assembly, the structure includes laminate polymer battery module, front and back busbar assembly, and each laminate polymer battery module piles up to connect and forms a laminate polymer battery module wholly, and front and back busbar assembly connects respectively in laminate polymer battery module holistic front and back both ends, and the busbar on the busbar assembly contacts with the utmost point ear of the laminate polymer core that corresponds around and. By adopting the utility model, each battery module can be conveniently combined into a soft package battery module whole body, series and parallel connection with different requirements can be realized, and the applicability is strong; the whole soft-package battery module and the busbar assembly are embedded and molded, so that the strength of the combined part formed by the heat conduction frame and the plastic part is improved, and the product consistency is better.

Description

Connection structure and battery module of laminate polymer battery module and busbar assembly

Technical Field

The embodiment of the utility model provides a relate to electric automobile accessory technical field, especially relate to a connection structure and battery module of laminate polymer battery module and busbar assembly.

Background

The soft package battery cell is a lithium battery with a shell made of a soft package material (usually an aluminum-plastic composite film), and has the advantages of small volume, light weight, high specific energy, high safety, flexible design and the like. The soft package battery core is structurally packaged by an aluminum plastic film, and the positive electrode and the negative electrode of the battery also adopt a battery tab structure, so that the soft package battery core is different from the conventional plastic shell and metal shell battery. Because the laminate polymer core physique is soft, difficult fixed, very easily the condition such as mar, pit, fold moreover appears to because laminate polymer core and traditional column battery structure difference are very big, consequently how to be connected each battery module with the busbar of battery module is a difficult problem of treating promptly and solving.

Disclosure of Invention

An object of the embodiment of the utility model is to provide a connection structure and battery module of laminate polymer battery module and busbar assembly, solved laminate polymer battery module equipment difficult, be difficult to the problem of being connected laminate polymer battery module and busbar.

The embodiment of the utility model provides a connecting structure of a soft-package battery module and a busbar assembly, which comprises a soft-package battery module, a front busbar assembly and a rear busbar assembly, the number of the soft-package battery modules is multiple, the soft-package battery modules comprise soft-package battery cores, all the soft-package battery modules are stacked and connected to form a whole soft-package battery module, the front and the back tabs of the soft-package battery cell in each soft-package battery module are respectively arranged in a grid shape at the front and the back sides of the whole soft-package battery module, the front bus bar assembly and the rear bus bar assembly are respectively connected with the front end and the rear end of the whole soft package battery module, and the front bus bar assembly and the rear bus bar assembly are both provided with bus bars arranged in a grid shape, the busbar is corresponding with the utmost point ear of the interior laminate polymer battery core of each laminate polymer battery module, just the busbar contacts with the utmost point ear of the laminate polymer battery core that corresponds.

Further, the connection structure of above-mentioned laminate polymer battery module and busbar assembly, wherein: the soft-packaged battery module comprises a soft-packaged battery cell carrier and a soft-packaged battery cell, wherein the soft-packaged battery cell carrier comprises a heat conduction frame and two plastic parts, the two plastic parts are connected to the front edge and the rear edge of the heat conduction frame respectively, the soft-packaged battery cell is arranged in the soft-packaged battery cell carrier, an opening is formed in the plastic part, and two tabs of the soft-packaged battery cell are corresponding to the opening position of the plastic part.

Further, the connection structure of above-mentioned laminate polymer battery module and busbar assembly, wherein: the top and the bottom of the plastic part are respectively provided with a pin body and a pin hole, and the pin body is matched with the pin hole in size; each laminate polymer battery module is stood on one side and is stacked up to be connected to form the whole laminate polymer battery module, and adjacent laminate polymer battery modules are connected through a pin body and a pin hole, so that each laminate polymer battery module is positioned and connected.

Furthermore, the connection structure of the above-mentioned laminate polymer battery module and busbar assembly, wherein: laminate polymer core is equipped with the polylith, and each laminate polymer core successive layer is arranged in the laminate polymer core carrier, between two adjacent laminate polymer cores, wherein two utmost point ears of a laminate polymer core correspond with two utmost point ear position homogeneous phases of another laminate polymer core respectively, just laminate polymer core's utmost point ear is the form of buckling, and the part of buckling of the utmost point ear that corresponds between each laminate polymer core forms a cavity, each in the cavity that utmost point ear formed in the laminate polymer battery module that corresponds is crossed to the busbar, just the busbar contacts with the kink phase-splitting of utmost point ear.

Furthermore, the connection structure of the above-mentioned laminate polymer battery module and busbar assembly, wherein: the front bus bar assembly and the rear bus bar assembly respectively comprise a support and bus bars, bus bar supporting pieces are formed on the supports, the bus bar supporting pieces are of strip-shaped structures and are arranged on the supports in a grid shape, bus bar embedded grooves are formed in the upper end and the lower end of each bus bar supporting piece, the bus bars are supported on the two bus bar supporting pieces, and the upper edge and the lower edge of each bus bar are embedded and formed in the bus bar embedded grooves.

Still further, the connection structure of above-mentioned laminate polymer battery module and busbar assembly, wherein: the bus bar on the front bus bar assembly is of a rectangular frame structure, the left vertical edge and the right vertical edge of the bus bar are respectively supported on the two bus bar supporting pieces, and the upper transverse edge, the lower transverse edge and the edge of the vertical edge of the bus bar are partially embedded and molded in the bus bar embedded groove.

The utility model also discloses a laminate polymer battery module, including the connection structure of above-mentioned laminate polymer battery module and busbar assembly.

The utility model discloses a substantive characteristics and the technological progress that is showing reflect: (1) by adopting the utility model, each soft-package battery module can be fixedly connected through the pin body and the pin hole in an inserting way, the operation is simple, the whole soft-package battery module is convenient to form, the series-parallel connection with different requirements can be realized by increasing a plurality of soft-package battery modules, and the applicability is strong; (2) the utility model discloses well preceding busbar assembly also adopts to bury the forming process with back busbar assembly, buries electrically conductive busbar in the plastic part busbar support through burying the forming process, only reserves welded surface, the holistic intensity of improvement; (3) each soft-packaged battery core utmost point ear is the form of buckling and has formed a cavity in the soft-packaged battery module, and the busbar alternates in the cavity and with the partial welding of buckling, has guaranteed that soft-packaged battery module is whole to be connected with the busbar assembly and is difficult for separating.

Drawings

Fig. 1 is a schematic structural diagram of a soft package battery module;

FIG. 2 is a schematic view of a front bus bar assembly;

FIG. 3 is a schematic view of the front bus bar assembly;

fig. 4 is a schematic structural diagram of a pouch battery module;

fig. 5 is a schematic diagram of the overall structure of a soft package battery module;

fig. 6 is a schematic structural diagram of another overall embodiment of a pouch battery module;

fig. 7 is a schematic diagram of a pouch cell module carrier structure;

FIG. 8 is a schematic view of a heat-conducting frame;

fig. 9 is a schematic structural view of a plastic part.

Description of reference numerals: 1-upper cover, 2-front end plate, 3-rear end plate, 4-heat conduction frame, 41-connection face, 42-plastic piece fixing hole, 43-hoisting hole, 5-plastic piece, 51-pin body, 52-pin hole, 53-bending part, 54-plastic piece bottom, 541-buckle, 542-through hole, 55-opening, 6-heat conduction cover, 61-heat conduction cover plastic piece, 7-front busbar assembly, 71-support, 711-PCB fixing groove, 712-busbar support piece, 713-busbar fixing hole, 714-busbar embedding groove, 72-busbar, 721-busbar fixing part, 73-PCB board, 74-plug interface, 75-signal output port, 76-conductive connection piece, 8-rear busbar assembly, 9-front protective cover, 10-rear protective cover, 11-soft package electric core, 111-lug, 12-foam cotton, 13-insulating piece, 14-heat conduction sheet, 15-FFC winding displacement.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the soft-package battery module of the present invention comprises a plurality of soft-package battery modules, a plurality of heat conducting fins 14, a front bus bar assembly 7 and a rear bus bar assembly 8, wherein a soft-package battery cell 11 is disposed in each soft-package battery module, each soft-package battery module is erected on one side and stacked to form a whole soft-package battery module, two front and rear tabs 111 of the soft-package battery cell 11 in each soft-package battery module are respectively arranged in a grid pattern on the front and rear sides of the whole soft-package battery module, the front bus bar assembly 7 and the rear bus bar assembly 8 are respectively connected to the front and rear ends of the whole soft-package battery module, and the front bus bar assembly 7 and the rear bus bar assembly 8 are both formed with bus bars arranged in a grid pattern, the bus bars correspond to the tabs of the soft-package battery cells 11 in each soft-package battery module, and the bus bars 72 are in contact with the corresponding tabs 111 of the soft-package battery cell 11, the whole bottom surface of laminate polymer battery module forms a cooling surface, conducting strip 14 fixed connection is in the holistic bottom of laminate polymer battery module, and conducting strip 14 with the cooling surface contacts.

As shown in fig. 4, fig. 5, fig. 7, fig. 8 and fig. 9, the soft-package battery module includes a soft-package battery cell carrier, a soft-package battery cell 11 and foam 12, the soft-package battery cell carrier includes a heat conduction frame 4 and a plastic part 5, and preferably, the heat conduction frame 1 is made of an aluminum material. Heat conduction frame 4 includes the bottom surface and controls the lateral wall, and the border upwards buckles to form about the bottom surface about the lateral wall, working of plastics 5 is equipped with two, and two working of plastics 5 are connected respectively in the border department around heat conduction frame 4, working of plastics 5 and heat conduction frame 4 are connected and are formed the flexible package electricity core carrier, flexible package electricity core 11 is arranged in the flexible package electricity core carrier, just be formed with opening 57 on the working of plastics 5, two utmost point ear 111 of flexible package electricity core 11 respectively with two the opening 57 position of working of plastics 5 is corresponding. The top and the bottom of the plastic part 5 are respectively provided with a pin body 51 and a pin hole 52, and the pin body 51 is matched with the pin hole 52 in size.

Preferably, as shown in fig. 4 and 5, plastic part 5 and heat conduction frame 4 are connected the soft-packaged electrical core carrier that forms and are built-in have two soft-packaged electrical core 11, two soft-packaged electrical core 11 stack layer by layer and are arranged in soft-packaged electrical core carrier, wherein one side and the heat conduction frame underrun of the soft-packaged electrical core 11 that is closest with heat conduction frame 4 bond mutually through beating the mode of gluing, this soft-packaged electrical core 11's another side and bubble cotton 12 wherein one side bond mutually through beating the mode of gluing, bubble cotton 12's another side and another soft-packaged electrical core 11 wherein one side bond mutually through beating the mode of gluing, between two soft-packaged electrical core 11, two utmost point ear 111 of one of them soft-packaged electrical core 11 correspond with two utmost point ear 111 positions of another soft-packaged electrical core. The foam 12 is mainly used for buffering the thickness accumulated tolerance of the cell and the expansion of the soft package cell 11 in the actual charging and discharging process.

It needs to be explained here, two built-in soft-packaged electrical core 11 of putting of holding are preferred scheme only in the above-mentioned scheme, can place one or more soft-packaged electrical core 11 according to actual need, if only place a soft-packaged electrical core 11, directly with this soft-packaged electrical core 11 direct with heat conduction frame 4 bonding can, if place a plurality of soft-packaged electrical core 11, then each soft-packaged electrical core 11 successive layer is piled up in soft-packaged electrical core carrier, the soft-packaged electrical core 11 that the definition is closest with heat conduction frame 4 is inlayer soft-packaged electrical core 11, the soft-packaged electrical core 11 that keeps away from with heat conduction frame 4 is outermost soft-packaged electrical core 11, inlayer soft-packaged electrical core 11 wherein one side and heat conduction frame underrun mode of beating glue and bond mutually, be equipped with bubble cotton 12 between the adjacent soft-packaged electrical core 11, and bubble cotton 12 bonds with two adjacent soft-packaged electrical core 11 through beating the glue mode mutually.

Because in actual use, different requirements are required for the output voltage and current of the soft-package battery module, different numbers of soft-package battery cells 11 can be arranged in a soft-package battery cell carrier according to actual conditions, the soft-package battery modules with corresponding ground voltage and current output can be formed by series or parallel combination, the adjacent soft-package battery cells 11 are arranged in the same direction according to electrodes, the homopolar lugs 111 of the soft-package battery cells 11 are connected with each other, and then the two soft-package battery cells 11 are connected in parallel; with adjacent soft-packaged electrical core 11 according to the reverse setting of electrode for the utmost point ear 111 interconnect of two soft-packaged electrical core 11 homopolarity, then two soft-packaged electrical core 11 establish ties. The orientation of each laminate polymer battery module is adjusted and the laminate polymer battery modules are connected with the corresponding bus bars, so that series-parallel connection between the laminate polymer battery modules can be realized.

In the laminate polymer battery module is whole, each laminate polymer battery module inclines immediately, between the adjacent laminate polymer battery module, the round pin body 51 of one of them laminate polymer battery module inserts in the pinhole 52 of another laminate polymer battery module, the surface of the outmost laminate polymer core 3 in one of them laminate polymer battery module and the 4 underrun of heat conduction frame of another laminate polymer battery module beat the mode and bond mutually for two laminate polymer battery module fixed connection, and make one of them lateral wall in the left side wall or the right side wall of laminate polymer battery module heat conduction frame 4 be in the bottom, each laminate polymer battery module is in the mutual concatenation of lateral wall of bottom and forms the cooling surface.

As shown in fig. 1, fig. 4 and fig. 6, each pouch battery module is erected on one side and connected to form the whole pouch battery module, and in each connected battery module, the outermost pouch cell of the pouch cell module located on the rightmost side is exposed to the outside, and it is also possible that the outermost pouch cell 3 of the pouch cell module located on the leftmost side is exposed to the outside in the whole pouch battery module according to the difference of the orientation of each pouch battery module in the erected side. In order to guarantee that the whole better thermal diffusivity and the connection steadiness of having of laminate polymer battery module, laminate polymer battery module wholly still includes a closing cap, and the closing cap includes heat conduction lid 6 and two heat conduction lid working of plastics 61, and heat conduction lid working of plastics 61 is connected in the border around heat conduction lid 6, outmost laminate polymer battery cell 3 exposes that a laminate polymer battery module in the external world in closing cap 6 and each laminate polymer battery module and is connected, and this working of plastics 61 round pin hub connections of working of plastics 5 of this laminate polymer battery cell carrier of this laminate polymer battery module and closing cap 6 for heat conduction lid 6 covers in the laminate polymer battery cell 11 outside of the laminate polymer battery module that links to each other with it, and heat conduction lid 6 is bonded mutually with outmost laminate polymer battery cell 11 of this laminate polymer battery module through beating the mode of gluing.

The conducting strip 14 comprises a bottom surface and left and right side walls, the left and right edges of the bottom surface of the conducting strip 14 are bent upwards to form the left and right side walls, the bottom surface of the conducting strip 14 is in contact with a radiating surface, and the left and right side walls of the conducting strip 14 are connected to the left and right sides of the whole soft package battery module in a clamping manner. Soft-packaged electrical core 11 in the above-mentioned structure is with self heat transfer to the bottom surface of the soft-packaged electrical core module heat conduction frame 4 at self place and the bottom surface of the heat conduction frame 4 of adjacent soft-packaged electrical core module, the cooling surface that each heat conduction frame bottom surface heat transfer formed to the lateral wall of heat conduction frame 4, the cooling surface that forms contacts with the 14 bottom surfaces of conducting strip, and the lateral wall contacts with heat conduction frame bottom surface and heat conduction lid 6 respectively about conducting strip 14, thereby make the heat transfer of soft-packaged electrical core 11 to conducting strip 14. The battery module is placed in a new energy automobile battery pack, corresponding radiating fins are arranged at positions, corresponding to the heat conducting fins 14, in the battery pack, and the heat conducting fins 14 are used for filling gaps between the module and the radiating fins, so that air thermal resistance is reduced, and heat is conveniently radiated.

As shown in fig. 7 to 9, the heat conducting frame 1 includes a bottom surface and left and right side walls, the left and right edges of the bottom surface are bent upward to form the left and right side walls, the plastic part 5 includes a plastic part bottom 54 and two bending pieces 53, the two bending pieces 53 are respectively located at the left and right ends of the plastic part bottom 54, the pin body 21 is located at the top of the bending piece 53, and the pin hole 22 is located at the bottom surface of the plastic part bottom 54 and directly below the pin body 21. Left and right bending piece 53 is arranged relatively at the outer edge of plastic part bottom 54 to form opening 57, the front and rear edges of heat conduction frame 4 are embedded and formed in plastic part 5, specifically, the bottom edge of heat conduction frame 4 is embedded and formed in plastic part bottom 54, and the left and right side walls of heat conduction frame 4 are embedded and formed in bending piece 53. In order to ensure that the heat conduction frame 4 and the plastic part 5 are connected more stably, the front and rear edges of the bottom surface of the heat conduction frame 4 are connected with the connection surface 41 in a bent shape, a plastic part fixing hole 42 is formed on the connection surface 41, the edges of the left and right side walls of the heat conduction frame 4 are also provided with plastic part fixing holes 42, and the plastic part bottom 54 and the bent part 53 are internally provided with connecting parts which are inserted in the plastic part fixing holes 42. In addition, the edge of the connecting surface 41 is provided with a positioning hole 43, and the plastic part 5 is provided with a through hole 542 at a position corresponding to the positioning hole 43.

As shown in fig. 2, 3 and 9, each of the front busbar assembly 7 and the rear busbar assembly 8 includes a bracket 71, a busbar 72 and a PCB 73, a buckle 541 is disposed on the bottom surface of the plastic part bottom 54, and left and right side edges of the bracket 71 are in clamping connection with the buckle 541, so that the front busbar assembly 7 and the rear busbar assembly 8 are fixedly connected to front and rear ends of the whole pouch battery module. The utmost point ear 111 of each laminate polymer battery cell 11 is the form of buckling in the laminate polymer battery module, and the utmost point ear 111 of each laminate polymer battery cell 11 in the laminate polymer battery module buckles the form part and contacts, forms a cavity, each busbar 72 alternates in the cavity that 11 utmost point ears 111 of laminate polymer battery cell in each laminate polymer battery module that corresponds formed, and each busbar 72 welds with the kink phase splitting of 11 utmost point ears 111 of laminate polymer battery cell in each laminate polymer battery module that corresponds. The bus bar 72 and the PCB 73 are both fixedly connected to the bracket 71, specifically, a bus bar support 712 is formed on the bracket 71, the bus bar support 712 is in a strip structure, and the plurality of bus bar supports 712 are arranged on the bracket 71 in a grid shape. Bus bar insertion grooves 714 are formed at upper and lower ends of the bus bar support 712. The bus bar 72 has a rectangular frame structure, the left and right vertical edges of the bus bar 72 are supported by the two bus bar supporting members 712, and the upper and lower horizontal edges and the edges of the vertical edges of the bus bar 72 are embedded in the bus bar insertion groove 714. Bus bar fixing holes 713 are formed between the adjacent bus bar supports 712, bus bar fixing portions are formed on the upper lateral sides of the bus bars 72, and the bus bar fixing holes 713 are fixedly connected with the bus bar fixing portions.

The upper edge of the bracket 71 is provided with a PCB fixing groove 711, the PCB 73 is clamped in the PCB fixing groove 711, the busbar 72 is connected with the PCB 73 through a conductive connecting piece 76, the PCB 73 is provided with a flat cable plug-in port 74, and a flat cable 15 is further provided, two ends of the flat cable 15 are respectively connected with the flat cable plug-in port 74 of the front busbar assembly 7 and the flat cable plug-in port on the rear busbar assembly 8, the PCB of the front busbar assembly 7 is further provided with a signal output port 75, and the signal output port 75 is used for outputting a detection signal of the flat cable. Of course, the signal output port may be disposed on the PCB of the rear bus bar assembly 8. Each laminate polymer battery module, winding displacement 15, busbar 72 and signal output port connect in the detection circuitry on the PCB board for detect each busbar 72's output voltage and electric current, be convenient for monitor the operating condition of whole battery module. The used voltage and current detection is a conventional circuit, belongs to the prior art, and is not described in detail herein. By adopting the detection method, the traditional wire harness sampling is reduced, and the sampled signals are uniformly collected to the signal output port 75 by the front bus bar assembly 7 and the rear bus bar assembly 8 through the 8-line 15 to be led out, so that the product safety is further enhanced.

As shown in fig. 1, an insulating member 13 and an upper cover 1 are further provided, and the insulating member 13 and the upper cover 1 each include a top surface and left and right side surfaces. Insulator 13 cup joints in the holistic periphery of laminate polymer battery module, and insulator 13's top surface lid is in the holistic top surface of laminate polymer battery module, and insulator 13 about the side lid in laminate polymer battery module holistic side about, and winding displacement 15 is located insulator 13 top surface, upper cover 1 cup joints in insulator 13 periphery, and upper cover 1's top surface lid is in insulator 13's top surface, and side lid is in insulator 13 about upper cover 1, and winding displacement 15 is located between upper cover 1 top surface and insulator 13 top surface, sets up upper cover 1 and also has certain heat conduction effect. Preferably, the utility model discloses still be equipped with front end plate 2, back end plate 3, preceding protecting cover 9 and back protecting cover 10 respectively fixed connection in the outside of preceding busbar assembly 7 and back busbar assembly 8, front end plate 2 and back end plate 3 are connected respectively in the front protecting cover 9 and the back protecting cover 10 outside.

The utility model discloses a manufacturing method of battery module as follows: (1) manufacturing a soft package battery module mould; (2) placing the heat conducting frame 4 at a corresponding position in a soft package battery module mould; (3) manufacturing a plastic piece 5 in a mould through an injection molding process, and integrally molding the plastic piece 5 and the heat conduction frame 4 to embed the heat conduction frame 4 into the molded plastic piece 5 to form a soft-package battery cell carrier; (4) placing the soft-package battery cell 11 in a soft-package battery cell carrier to form a soft-package battery module; (5) connecting all the soft package battery modules to form a whole soft package battery module; (6) manufacturing a front bus bar assembly mold and a rear bus bar assembly mold, (7) respectively placing the bus bars in corresponding positions in the front bus bar assembly mold and the rear bus bar assembly mold; (8) forming a bus bar support 71 in a mold through an injection molding process, wherein the bus bar support 71 and the bus bar 72 are integrally molded, so that the bus bar 72 is embedded in the molded bus bar support 71 to form a front bus bar assembly 7 and a rear bus bar assembly 8; (9) respectively and fixedly connecting a front busbar assembly 7 and a rear busbar assembly 8 to the front end and the rear end of the whole soft-package battery module, (10) bending the tabs of the soft-package battery cells of the soft-package battery modules, so that the bent parts of the tabs 111 are coated on the periphery of the busbar 72, and welding the bent parts of the tabs 111 of the soft-package battery cells 11 with the corresponding busbars; (11) and a heat conducting sheet 14 is arranged on the whole bottom surface of the soft package battery module. The above step (11) may be performed between the steps (5) and (6).

Through the above description, it can be seen that, by adopting the utility model, each soft-package battery module can be fixedly connected through the pin body 21 and the pin hole 22 in an inserting manner, the operation is simple, the whole soft-package battery module is convenient to form, series and parallel connection with different requirements can be realized by increasing a plurality of soft-package battery modules, and the applicability is strong; moreover, the utility model discloses regard heat conduction frame 4 as the main part of soft-packaged electrical core carrier to be equipped with conducting strip 14 in soft-packaged battery module whole bottom, have fine heat conductivility, adopt between heat conduction frame 4 and the working of plastics 5 to bury the fashioned technology, compare traditional hot riveting technology, improved the sub-assembly intensity that heat conduction frame 4 and working of plastics 5 formed, have better product uniformity; foam cotton is arranged between the adjacent soft-packaged battery cells 11 and used for buffering the thickness accumulated tolerance of the battery cells and the battery cell expansion in the actual charging and discharging process; moreover, the utility model discloses well preceding busbar assembly also adopts to bury the forming technology with back busbar assembly, buries electrically conductive busbar in plastic part busbar support through the technology of burying the forming, only reserves busbar welded surface, the intensity of the whole of improvement, each soft-packaged battery cell utmost point ear is the bending type and has formed a cavity in the soft-packaged battery module, the busbar alternates in the cavity and welds with the bending part, guaranteed that soft-packaged battery module is whole to be connected with the busbar assembly and is difficult for separating; furthermore, the utility model discloses still reduced traditional pencil sampling, preceding busbar assembly 7, back busbar assembly 8 collect the signal output port through winding displacement 15 with the signal of sampling in unison and draw forth for the further reinforcing of product security.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides a connection structure of laminate polymer battery module and busbar assembly which characterized in that: including laminate polymer battery module, preceding busbar assembly and back busbar assembly, laminate polymer battery module is equipped with a plurality ofly, include laminate polymer battery cell in the laminate polymer battery module, each laminate polymer battery module piles up to connect and forms a laminate polymer battery module wholly, two utmost point ears around the laminate polymer battery cell in each laminate polymer battery module are the grid form respectively and arrange in laminate polymer battery module holistic front and back both ends, just preceding busbar assembly is connected in laminate polymer battery module holistic front and back both ends respectively with the back busbar assembly all be formed with the busbar that the grid form was arranged on preceding busbar assembly and the back busbar assembly, the busbar is corresponding with laminate polymer battery cell utmost point ear in each laminate polymer battery module, just the busbar contacts with the utmost point ear of the laminate polymer battery cell that corresponds.

2. The pouch battery module and busbar assembly connection structure of claim 1, wherein: the soft-packaged battery module comprises a soft-packaged battery cell carrier and a soft-packaged battery cell, wherein the soft-packaged battery cell carrier comprises a heat conduction frame and two plastic parts, the two plastic parts are connected to the front edge and the rear edge of the heat conduction frame respectively, the soft-packaged battery cell is arranged in the soft-packaged battery cell carrier, an opening is formed in the plastic part, and two tabs of the soft-packaged battery cell are corresponding to the opening position of the plastic part.

3. The pouch battery module and busbar assembly connection structure of claim 2, wherein: the top and the bottom of the plastic part are respectively provided with a pin body and a pin hole, and the pin body is matched with the pin hole in size; each laminate polymer battery module is stood on one side and is stacked up to be connected to form the whole laminate polymer battery module, and adjacent laminate polymer battery modules are connected through a pin body and a pin hole, so that each laminate polymer battery module is positioned and connected.

4. The pouch battery module and busbar assembly connection structure of claim 2, wherein: laminate polymer core is equipped with the polylith, and each laminate polymer core successive layer is arranged in the laminate polymer core carrier, between two adjacent laminate polymer cores, wherein two utmost point ears of a laminate polymer core correspond with two utmost point ear position homogeneous phases of another laminate polymer core respectively, just laminate polymer core's utmost point ear is the form of buckling, and the part of buckling of the utmost point ear that corresponds between each laminate polymer core forms a cavity, each in the cavity that utmost point ear formed in the laminate polymer battery module that corresponds is crossed to the busbar, just the busbar contacts with the kink phase-splitting of utmost point ear.

5. The pouch battery module and busbar assembly connection structure of claim 1, wherein: the front bus bar assembly and the rear bus bar assembly respectively comprise a support and bus bars, bus bar supporting pieces are formed on the supports, the bus bar supporting pieces are of strip-shaped structures and are arranged on the supports in a grid shape, bus bar embedded grooves are formed in the upper end and the lower end of each bus bar supporting piece, the bus bars are supported on the two bus bar supporting pieces, and the upper edge and the lower edge of each bus bar are embedded and formed in the bus bar embedded grooves.

6. The pouch battery module and busbar assembly connection structure of claim 5, wherein: the bus bar on the front bus bar assembly is of a rectangular frame structure, the left vertical edge and the right vertical edge of the bus bar are respectively supported on the two bus bar supporting pieces, and the upper transverse edge, the lower transverse edge and the edge of the vertical edge of the bus bar are partially embedded and molded in the bus bar embedded groove.

7. The utility model provides a laminate polymer battery module which characterized in that: the connecting structure of the soft package battery module and the busbar assembly, which comprises any one of claims 1 to 6.