CN218975725U - Integrated collection busbar for battery module - Google Patents
Integrated collection busbar for battery module Download PDFInfo
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- CN218975725U CN218975725U CN202223552388.5U CN202223552388U CN218975725U CN 218975725 U CN218975725 U CN 218975725U CN 202223552388 U CN202223552388 U CN 202223552388U CN 218975725 U CN218975725 U CN 218975725U
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- film layer
- ffc
- adhesive film
- busbar
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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
- H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
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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
- H01M50/543—Terminals
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model belongs to the technical field of new energy power battery packs and energy storage, and discloses an integrated acquisition busbar for a battery module. The integrated collection busbar comprises a glue film layer, an FFC assembly and a plurality of conductive bus bars, wherein the FFC assembly and the conductive bus bars are fixed on the glue film layer, and the FFC assembly is independently connected with each conductive bus bar through an FFC bus line. The utility model adopts the FFC component to replace the traditional FPC component, adopts the adhesive film layer to fix the FFC component and the conductive bus bar, and combines all the components into a whole. The whole integrated collection busbar has the advantages of simple and light structure, stable connection, no need of special plastic support and reinforcing plate structure, small occupied space and obvious innovation significance for improving the space utilization rate of the battery and reducing the cost.
Description
Technical Field
The utility model belongs to the technical field of new energy power battery packs and energy storage, and particularly relates to an integrated acquisition busbar for a battery module.
Background
With the rapid development of the electric automobile industry, the electrification trend of the power assembly is more and more obvious. The battery is taken as a power core of the electric vehicle and is a very important part of the whole electric vehicle. The battery system of an electric automobile is often composed of a plurality of single batteries in series-parallel connection, and the service efficiency, the endurance mileage, the long-term reliability under severe conditions and the like of the battery system are related to the service performance and the safety of the whole automobile.
With the standardization development of the industry, the design of the battery pack is developed towards the standardization direction, the design of the components of the battery pack is also developed towards the integration direction, and the automation and integration trend of the industry puts higher demands on the design matching capability of the component suppliers and the quality and performance of the components. In addition, the electric automobile is high in cost at present, and the cost is reduced at the design source, so that the electric automobile is a common target for the person skilled in the art.
The integrated collection busbar (CCS or IBB) is a highly integrated battery signal collection (such as temperature collection, pressure collection and the like) and management system, the existing CCS mainly comprises a plastic support, an FPC component and a conductive bus connection aluminum busbar (aluminum bar), the FPC component comprises an FPC board, a connector, a nickel sheet, an NTC resistor and the like, and all devices on the FPC component are pasted on the FPC board through SMT. The novel solar energy collector has the problems of complex structure, higher cost, large occupied space and overall weight bias.
Patent CN109494336a discloses a battery module composite busbar. The composite busbar comprises a PCB layer, a conductive composite layer and a reinforcing layer which are sequentially laminated; a plurality of bonding pads are arranged on the PCB layer; the conductive composite layer comprises a conductive layer and an insulating layer which are mutually nested; the conductive layer comprises a plurality of conductive plates integrated on a plane, the plurality of conductive plates are respectively arranged corresponding to the battery cores, and the conductive plates are provided with metal columns corresponding to the bonding pads. The reinforcing layer adopts an epoxy resin plate, and can be provided with a plurality of blind holes or grooves, so that the insulation and heat dissipation effects are realized while the structural strength is enhanced.
Patent CN209029462U discloses a battery pack busbar comprising a bottom-up lower insulating film, an epoxy resin plate, a connecting row, a thermosetting adhesive, an FPC assembly and an upper insulating film; the epoxy resin plate is provided with a through groove, and the connecting row is arranged in the through groove; the FPC component comprises an electrically connected copper foil, a nickel sheet, a PTC thermistor and a connector, wherein one end of the nickel sheet is electrically connected with the copper foil, and the other end of the nickel sheet is electrically connected with the connecting row; the PTC thermistor and the connector are both arranged on the copper foil; the FPC component is adhered to the epoxy resin board through the thermosetting adhesive; an upper film through hole is formed in the upper insulating film; the lower insulating film is provided with a lower film through hole.
Patent CN113517620a discloses a replaceable collection flexible harness board integrated busbar for a new energy automobile power battery, which comprises a harness board plastic bracket, a plurality of conductive bus connection bars, an FPC collection harness and an output connector; the FPC collection wiring harness and the plurality of conductive bus bars are arranged on the wiring harness board plastic support in a separated mode, and the output end of the FPC collection wiring harness is in butt joint with the output connector; in particular, the FPC gathers pencil design and is removable form, through setting up detachable connecting device between each conductive busbar and FPC gathers pencil, has realized FPC gathers pencil modular plug and play formula and has changed.
The integrated busbar adopted by the patent also adopts a wire harness FPC assembly or a PCB assembly for signal acquisition, has complex structure and higher cost, and adopts a resin plate or a plastic bracket with specific grooves or holes for fixing the FPC assembly or the PCB assembly, so that the integrated busbar has complex structure, occupies large space and is heavy overall.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the utility model aims to provide an integrated acquisition busbar for a battery module.
The utility model aims at realizing the following technical scheme:
the utility model provides an integrated collection busbar for battery module, includes glued membrane layer and is fixed in FFC subassembly and a plurality of conductive busbar connection on the glued membrane layer, FFC subassembly is connected with every conductive busbar connection alone through FFC winding displacement.
Further, the adhesive film layer is a PET adhesive film layer, and the thickness of the PET adhesive film layer is 0.03-2 mm.
Further, the PET adhesive film layer consists of a PET layer and an adhesive layer; the thickness of the PET layer is 0.03-1 mm, and the thickness of the adhesive layer is 0.01-0.1 mm.
Further, the adhesive film layer is an independent upper adhesive film layer, and the FFC assembly and the conductive bus bar are adhered and fixed into a whole integrated cover plate through the upper adhesive film layer; or the adhesive film layer comprises an upper adhesive film layer and a lower adhesive film layer, and the FFC assembly and the conductive bus bar are adhered and fixed between the upper adhesive film layer and the lower adhesive film layer; the upper adhesive film layer is single-sided adhesive, and the lower adhesive film layer is single-sided adhesive or double-sided adhesive. The adhesive film layer of the utility model has the main functions of adhering and fixing the FFC component and the conductive bus bar, combining all the parts into a whole integrated cover plate, and playing the roles of insulation and water resistance. The connecting device has the advantages of simple structure, stable connection, small occupied space, light weight and low cost.
Further, the upper adhesive film layer and/or the lower adhesive film layer are provided with openings for placing conductive bus bars or welding sites or signal acquisition sites. The conductive bus bar is matched and connected or welded with the battery core pole through the opening.
Further, the FFC component comprises an FFC flat cable, wherein an FFC flat cable acquisition end and a conductive bus bar are fixed through welding or plugging, and the FFC flat cable acquisition end is integrated with signal acquisition devices such as an NTC device; the FFC flat cable output end is connected with the output connector after being gathered. The FFC and the conductive bus bar can be welded directly (such as ultrasonic welding, but not limited to), or welded through nickel sheet transfer. Direct welding is preferred, so that the process is simple and the cost is low. The reliability can be enhanced by adding a dispensing process to the solder joints.
Further, the FFC assemblies are one or more, and the FFC assemblies are arranged in a planar distribution or lamination mode.
Further, the conductive bus bar is aluminum bar, copper bar or copper-aluminum composite material.
Further, the conductive bus bar is also provided with a welding hole. The welding of the conductive bus bar and the battery core electrode post can be realized by slit welding, penetration welding and the like.
Furthermore, positioning holes are further formed in two ends of the integrated acquisition busbar. After being wrapped by the adhesive film layer, the busbar has better integrity, can be tiled on the battery cell only by positioning the positioning holes at two ends, and then is welded on the battery cell to realize integral fixation.
Further, a pressure relief avoiding groove is formed in the adhesive film layer. The pressure relief avoiding groove is used for being matched with a battery pack cell pressure relief valve so as to facilitate pressure relief of the battery pack.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The FFC component is adopted to replace the traditional FPC component, and has the advantages of simple structure, low cost, high flatness and adhesion fixation.
(2) The utility model adopts the adhesive film layer to paste and fix the FFC component and the conductive bus bar, combines all the parts into a whole integrated cover plate, and realizes the fixation of the whole integrated acquisition bus bar structure on the battery pack after the connection of the follow-up conductive bus bar and the battery core pole post. The whole integrated collection busbar has the advantages of simple and light structure, stable connection, no need of special plastic support and reinforcing plate structure, small occupied space and obvious innovation significance for improving the space utilization rate of the battery and reducing the cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an integrated acquisition busbar in an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a structure of an upper adhesive film layer of an integrated acquisition busbar in an embodiment of the present utility model;
FIG. 3 is a schematic view of a lower adhesive film layer structure of an integrated acquisition busbar in an embodiment of the present utility model;
fig. 4 is a layout diagram of a position of a pressure release avoiding groove on an integrated collection busbar adhesive film layer in an embodiment of the utility model.
Detailed Description
The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.
Example 1
An integrated collection busbar for a battery module of the embodiment has a structure schematically shown in fig. 1 to 3. Comprises an upper adhesive film layer 1, a lower adhesive film layer 2, an FFC assembly 3 and a plurality of conductive bus bars 4, wherein the FFC assembly is adhered and fixed between the upper adhesive film layer and the lower adhesive film layer; the FFC components are arranged in two rows in parallel; the typical structure of the upper and lower adhesive film layers is that a single-sided PET adhesive film with the thickness of 0.13mm is adopted, or the upper adhesive film layer adopts a single-sided PET adhesive film with the thickness of 0.13mm, and the lower adhesive film layer adopts a double-sided PET adhesive film with the thickness of 0.5 mm. The FFC component is fixed with each conductive bus bar through welding or plugging through the acquisition end of the FFC flat cable, and the acquisition end of the FFC flat cable is integrated with signal acquisition devices such as NTC devices; the FFC flat cable output ends are collected and connected with the output connector 5. The upper and lower adhesive film layers are provided with openings 6 for accommodating conductive bus bars, the conductive bus bars are provided with welding holes 7, and the conductive bus bars can be welded and fixed with the battery core electrode posts through the welding holes. And positioning holes 8 are further formed in the two ends of the integrated acquisition busbar, and the integrated acquisition busbar can be tiled on the battery cell through the positioning holes in the two ends.
In a specific embodiment, optionally, the upper and lower adhesive film layers are further provided with a pressure relief avoiding groove 9, and a position layout diagram of the pressure relief avoiding groove is shown in fig. 4. The pressure relief avoiding groove is used for being matched with a battery pack cell pressure relief valve so as to facilitate pressure relief of the battery pack.
As a preferred embodiment of the present utility model, the conductive bus bar may be selected from aluminum bars and copper bars excellent in conductivity and soldering property.
Example 2
An integrated collection busbar for a battery module of the embodiment has a structure schematically shown in fig. 1-2. Comprises an upper adhesive film layer 1, an FFC assembly 3 and a plurality of conductive bus bars 4, wherein the FFC assembly 3 is adhered and fixed on the upper adhesive film layer; the FFC components are arranged in two rows in parallel; the upper adhesive film layer is made of PET single-sided adhesive tape with the thickness of 0.5mm, the FFC assembly is fixed with each conductive bus bar through welding or splicing through the acquisition end of an FFC flat cable, and the acquisition end of the FFC flat cable is integrated with signal acquisition devices such as NTC devices; the FFC flat cable output ends are collected and connected with the output connector 5. And the conductive bus bar is provided with a welding hole 7, and the conductive bus bar can be welded and fixed with the battery core electrode post through the welding hole. And positioning holes 8 are further formed in the two ends of the integrated acquisition busbar, and the integrated acquisition busbar can be tiled on the battery cell through the positioning holes in the two ends.
In a specific embodiment, optionally, the upper adhesive film layer is further provided with a pressure relief avoiding groove 9, and a position layout diagram of the pressure relief avoiding groove is shown in fig. 4. The pressure relief avoiding groove is used for being matched with a battery pack cell pressure relief valve so as to facilitate pressure relief of the battery pack.
As a preferred embodiment of the present utility model, the conductive bus bar may be selected from aluminum bars and copper bars excellent in conductivity and soldering property.
The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.
Claims (10)
1. The integrated collection busbar for the battery module is characterized by comprising a glue film layer, an FFC assembly and a plurality of conductive bus bars, wherein the FFC assembly and the conductive bus bars are fixed on the glue film layer, and the FFC assembly is independently connected with each conductive bus bar through an FFC bus bar.
2. The integrated acquisition busbar for a battery module according to claim 1, wherein the adhesive film layer is a PET adhesive film layer, and the thickness of the PET adhesive film layer is 0.03-2 mm; the PET adhesive film layer consists of a PET layer and an adhesive layer, wherein the thickness of the PET layer is 0.03-1 mm, and the thickness of the adhesive layer is 0.01-0.1 mm.
3. The integrated collection busbar for a battery module according to claim 1 or 2, wherein the adhesive film layer is an independent upper adhesive film layer, and the FFC assembly and the conductive bus bar are adhered and fixed into an integrated cover plate through the upper adhesive film layer; or the adhesive film layer comprises an upper adhesive film layer and a lower adhesive film layer, and the FFC assembly and the conductive bus bar are adhered and fixed between the upper adhesive film layer and the lower adhesive film layer; the upper adhesive film layer is single-sided adhesive, and the lower adhesive film layer is single-sided adhesive or double-sided adhesive.
4. An integrated acquisition busbar for a battery module according to claim 3, wherein the upper and/or lower adhesive film layers are provided with openings for accommodating conductive bus bars or soldering sites or signal acquisition sites.
5. The integrated acquisition busbar for a battery module according to claim 1, wherein the FFC assembly includes an FFC wire, an FFC wire acquisition end and a conductive busbar are fixed by welding or plugging, and the FFC wire acquisition end is integrated with an NTC device; the FFC flat cable output end is connected with the output connector after being gathered.
6. The integrated collection busbar for a battery module of claim 5, wherein the FFC assembly is one or more of a planar distribution arrangement or a stacked arrangement.
7. The integrated acquisition busbar for a battery module of claim 1, wherein the conductive buss bar is aluminum bar, copper bar, or copper aluminum composite.
8. The integrated collection busbar for a battery module of claim 1, wherein the conductive buss bar is further provided with a welding hole.
9. The integrated collection busbar for a battery module according to claim 1, wherein positioning holes are further formed at two ends of the integrated collection busbar.
10. The integrated collection busbar for a battery module according to claim 1, wherein the adhesive film layer is further provided with a pressure relief avoiding groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022109953873 | 2022-08-18 | ||
| CN202210995387.3A CN115295967A (en) | 2022-08-18 | 2022-08-18 | Integrated collection busbar for battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218975725U true CN218975725U (en) | 2023-05-05 |
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Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210995387.3A Pending CN115295967A (en) | 2022-08-18 | 2022-08-18 | Integrated collection busbar for battery module |
| CN202211396996.3A Pending CN115579588A (en) | 2022-08-18 | 2022-11-09 | FFC-FPC combined type battery module integrated acquisition busbar |
| CN202211396997.8A Pending CN115566370A (en) | 2022-08-18 | 2022-11-09 | Battery module acquisition integrated busbar based on FFC |
| CN202211679898.0A Pending CN115842220A (en) | 2022-08-18 | 2022-12-26 | Integrated collection busbar for battery module |
| CN202223552388.5U Active CN218975725U (en) | 2022-08-18 | 2022-12-26 | Integrated collection busbar for battery module |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210995387.3A Pending CN115295967A (en) | 2022-08-18 | 2022-08-18 | Integrated collection busbar for battery module |
| CN202211396996.3A Pending CN115579588A (en) | 2022-08-18 | 2022-11-09 | FFC-FPC combined type battery module integrated acquisition busbar |
| CN202211396997.8A Pending CN115566370A (en) | 2022-08-18 | 2022-11-09 | Battery module acquisition integrated busbar based on FFC |
| CN202211679898.0A Pending CN115842220A (en) | 2022-08-18 | 2022-12-26 | Integrated collection busbar for battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN115295967A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505204A (en) * | 2023-06-28 | 2023-07-28 | 深圳市驭能科技有限公司 | High-flame-retardant reliability acquisition integrated busbar and preparation method thereof |
| CN117528956A (en) * | 2023-11-09 | 2024-02-06 | 深圳市驭能科技有限公司 | SMT-free high-reliability low-cost acquisition integrated busbar and preparation method thereof |
-
2022
- 2022-08-18 CN CN202210995387.3A patent/CN115295967A/en active Pending
- 2022-11-09 CN CN202211396996.3A patent/CN115579588A/en active Pending
- 2022-11-09 CN CN202211396997.8A patent/CN115566370A/en active Pending
- 2022-12-26 CN CN202211679898.0A patent/CN115842220A/en active Pending
- 2022-12-26 CN CN202223552388.5U patent/CN218975725U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115579588A (en) | 2023-01-06 |
| CN115566370A (en) | 2023-01-03 |
| CN115842220A (en) | 2023-03-24 |
| CN115295967A (en) | 2022-11-04 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230831 Address after: 213115, 1st to 3rd floors, Building 1, No. 17 Changyang Road, Wujin Economic Development Zone, Changzhou City, Jiangsu Province Patentee after: Changzhou Yuneng Technology Co.,Ltd. Address before: 518122 6th floor, Tonglixing Industrial Park office building, lanzhudong Road, Zhukeng community, Longtian sub district office, Pingshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN YUNENG TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right |