CN220106816U - Battery module with double-layer lugs - Google Patents
Battery module with double-layer lugs Download PDFInfo
- Publication number
- CN220106816U CN220106816U CN202320144508.3U CN202320144508U CN220106816U CN 220106816 U CN220106816 U CN 220106816U CN 202320144508 U CN202320144508 U CN 202320144508U CN 220106816 U CN220106816 U CN 220106816U
- Authority
- CN
- China
- Prior art keywords
- tab
- battery
- battery module
- pole
- negative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003466 welding Methods 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 abstract description 16
- 238000005452 bending Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery module with double-layer lugs, which relates to the technical field of power batteries, and comprises: the plurality of single batteries are sequentially arranged side by side, the positive electrode lug of one single battery of two adjacent single batteries faces the same direction as the negative electrode lug of the other single battery, and the plurality of single batteries are connected in series; two pole-discharging brackets are arranged between two adjacent single batteries, the two pole-discharging brackets are respectively close to two ends of each single battery, the positive pole lug of each single battery is connected with the negative pole lug of the adjacent single battery, and the connected positive pole lug and the connected negative pole lug are bent and laminated on the side wall of one pole-discharging bracket. The positive electrode tab and the negative electrode tab which are connected do not need to be welded and connected by taking the bus bar as a carrier, so that the cost and the weight of the battery module are reduced, the cost of the whole power battery system is reduced, the energy density of the system is improved, and the competitiveness is improved.
Description
Technical Field
The utility model belongs to the technical field of power batteries, and particularly relates to a battery module with double-layer lugs.
Background
The power battery is also called a battery pack, and mainly comprises a plurality of battery modules which are connected through high voltage to achieve system voltage and electric quantity. The battery module is a combination body which combines more than one single battery in a serial, parallel or serial-parallel mode and is used as a power supply. The single battery mainly comprises a square shell battery, a soft package battery and a cylindrical battery. The main stream welding mode of the multi-string soft package battery module in the current market is to weld the single batteries through the positive and negative electrode lugs and the bus bars to finish the target serial number, the positive and negative electrode lugs are bent into upper and lower double layers before welding, the bus bars are arranged below the lug layers, and the bus bars are carriers for welding the single battery lugs.
However, when the bus bar is used as a carrier for welding the electrode lugs of the single batteries, the cost and the weight of the battery module are increased, so that the cost of the whole power battery system is increased, the energy density of the system is reduced, and the competitiveness of the product is reduced.
Disclosure of Invention
The utility model aims to provide a battery module with double-layer lugs aiming at the defects of the prior art, so as to solve the problems that the cost and the weight of the battery module are increased when a bus bar is used as a carrier for welding single battery lugs in the prior art, thereby improving the cost of the whole power battery system, reducing the energy density of the system and reducing the competitiveness of products.
In order to achieve the above object, the present utility model provides a battery module of a double-layered tab, the module comprising:
the plurality of single batteries are sequentially arranged side by side, the positive electrode lug of one single battery and the negative electrode lug of the other single battery of two adjacent single batteries face the same direction, and the plurality of single batteries are connected in series;
two pole-outlet brackets are arranged between two adjacent single batteries, the two pole-outlet brackets are respectively close to two ends of each single battery, the positive pole lug of each single battery is connected with the negative pole lug of the adjacent single battery, and the connected positive pole lug and the negative pole lug are bent and laminated on the side wall of one pole-outlet bracket.
Preferably, the pole outlet bracket comprises a supporting beam and two side beams, one ends of the two side beams are respectively connected with two ends of the supporting beam in an integrated manner, one side wall of the supporting beam is connected with a supporting plate in an integrated manner and positioned between the two side beams, the surface of the single battery is attached to the plate surface of the supporting plate, and the connected positive pole tab and the negative pole tab are bent and welded and laminated on the other side wall of the supporting beam.
Preferably, the other side wall of the supporting beam is provided with a hollow groove corresponding to the position of the laminated positive electrode tab and the laminated negative electrode tab.
Preferably, gaps are formed between the two ends of the supporting plate and the two side beams respectively, flanges are formed on the two edge walls of the single battery, and the two flanges are inserted into the two gaps respectively.
Preferably, the positive electrode tab is a positive electrode aluminum tab.
Preferably, the negative electrode tab is a negative copper tab.
Preferably, the negative electrode tab is laminated between the positive electrode tab and the other side wall of the support beam.
Preferably, the single battery is a soft package battery.
Preferably, the polar outlet bracket is a polar outlet plastic bracket.
Preferably, the width of the hollowed-out groove is greater than or equal to 2mm than the width of a welding seam when the positive electrode tab and the negative electrode tab are welded, and the depth of the hollowed-out groove is greater than 3mm.
The utility model provides a battery module with double-layer tabs, which has the beneficial effects that two tab discharging brackets are arranged between two adjacent single batteries of the module, the two tab discharging brackets are respectively close to two ends of each single battery, the positive tab of each single battery is connected with the negative tab of the adjacent single battery, the connected positive tab and the negative tab are bent and laminated on the side wall of one tab discharging bracket, so that a plurality of single batteries are connected in series, and the connected positive tab and the negative tab are not required to be welded and connected by a bus bar as a carrier, so that the cost and the weight of the battery module are reduced, the cost of the whole power battery system is reduced, the energy density of the system is improved, and the production competitiveness is improved.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
Fig. 1 illustrates an exploded structural view of a battery module of a double-layered tab according to an embodiment of the present utility model;
fig. 2 is a schematic diagram showing the structure of a unit cell of a battery module with a double-layered tab according to an embodiment of the present utility model;
fig. 3 is a schematic view showing the structure of an outlet bracket of a battery module with double-layered tabs according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a single battery; 2. a positive electrode tab; 3. a negative electrode tab; 4. a pole outlet bracket; 5. a support beam; 6. edge beams; 7. a support plate; 8. a hollow groove; 9. a slit; 10. flanging; 11. and (5) mounting holes.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below. While the preferred embodiments of the present utility model are described below, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
As shown in fig. 1 to 3, the present utility model provides a battery module having a double-layered tab, the module including:
the battery pack comprises a plurality of single batteries 1, wherein the single batteries 1 are sequentially arranged side by side, the positive electrode lug 2 of one single battery 1 of two adjacent single batteries 1 faces the same direction as the negative electrode lug 3 of the other single battery 1, and the plurality of single batteries 1 are connected in series;
two pole-discharging brackets 4 are arranged between two adjacent single batteries 1, the two pole-discharging brackets 4 are respectively close to two ends of the single batteries 1, the positive pole lug 2 of each single battery 1 is connected with the negative pole lug 3 of the adjacent single battery 1, and the connected positive pole lug 2 and negative pole lug 3 are bent and laminated on the side wall of one pole-discharging bracket 4.
Specifically, in order to solve the problems that when a bus bar is used as a carrier for welding single battery lugs, the cost and the weight of a battery module are increased, so that the cost of the whole power battery system is increased, the energy density of the system is reduced, and the competitiveness of a product is reduced.
Preferably, the pole-discharging support 4 comprises a support beam 5 and two side beams 6, one ends of the two side beams 6 are respectively connected at two ends of the support beam 5 in an integrated manner, one side wall of the support beam 5 is connected with a support plate 7 in an integrated manner between the two side beams 6, the surface of the single battery 1 is attached to the plate surface of the support plate 7, the connected positive pole tab 2 and the negative pole tab 3 are bent and welded and laminated on the other side wall of one support beam 5, and the pole-discharging support 4 is a pole-discharging plastic support.
Specifically, the supporting beam 5 can be directly used as a carrier for bending and welding lamination of the positive electrode tab 2 and the negative electrode tab 3 which are connected, the electrode outlet bracket 4 is an electrode outlet plastic bracket and is used for insulating the plurality of single batteries 1, and a welding tool can be used for pressing and welding when the positive electrode tab 2 and the negative electrode tab 3 are bent and welded and laminated.
Preferably, the two side beams 6 included by the pole outlet support 4 are provided with mounting holes 11, the peripheral walls of the two mounting holes 11 are respectively provided with round bosses extending in opposite directions, and the round boss of one pole outlet support 4 of the adjacent pole outlet support 4 is inserted into the mounting hole 11 on the opposite other pole outlet support 4, so that a plurality of pole outlet supports 4 arranged side by side are connected together.
Specifically, through the plug connection of the round boss and the mounting hole 11, a plurality of pole outlet brackets 4 which are arranged side by side are stably connected together, and the offset between the pole outlet brackets 4 is avoided.
Preferably, the mounting holes 11 of the plurality of pole brackets 4 arranged side by side are inserted with screws through which nuts for fastening are screwed.
Specifically, through the insertion of screw rod and with nut threaded connection, can be with the inseparable laminating of a plurality of play utmost point supports 4 that set up side by side together, avoid taking place to drop between a plurality of play utmost point 4.
Preferably, the other side wall of the supporting beam 5 is provided with a hollowed-out groove 8 at a position corresponding to the laminated positive electrode tab 2 and negative electrode tab 3.
Specifically, because the melting point of the plastic material of the electrode-discharging plastic support is far lower than that of the positive electrode tab 2 and the negative electrode tab 3, the electrode-discharging support 4 is scalded to avoid that the local temperature of the welding part of the positive electrode tab 2 and the negative electrode tab 3 is higher than that of the plastic material during welding, the welding part of the double-layer laminated positive electrode tab 2 and the negative electrode tab 3 is directly below, and the other side wall of the supporting beam 5 positioned on the electrode-discharging support 4 is hollowed, so that the electrode-discharging support 4 is free from scalding.
Preferably, gaps 9 are respectively arranged between the two ends of the supporting plate 7 and the two side beams 6, flanges 10 are respectively arranged on the two edge walls of the single battery 1, and the two flanges 10 are respectively inserted into the two gaps 9.
Specifically, the plug connection mode is used for connecting the single battery 1 on the pole outlet support 4, so that the phenomenon that the single battery 1 is deviated from the pole outlet support 4 is avoided, and the single battery 1 is supported.
Preferably, the positive electrode tab 2 is a positive electrode aluminum tab, the negative electrode tab 3 is a negative electrode copper tab, and the negative electrode tab 3 is laminated between the positive electrode tab 2 and the other side wall of the support beam 5.
Specifically, when bending and stacking, the negative electrode copper tab can be bent on the other side wall of the supporting beam 5, then the positive electrode aluminum tab is bent above the negative electrode copper tab, the negative electrode copper tab and the positive electrode aluminum tab are pressed and welded through a welding tool, the bending sequence mainly considers that the copper melting point is far higher than that of aluminum, and the welding temperature required by placing the negative electrode copper tab at the uppermost surface is far higher than that born by the positive electrode aluminum tab, so that poor welding quality can be caused.
Preferably, the unit cell 1 is a pouch cell.
Specifically, the flexible battery is suitable for stacking the positive electrode tab 2 and the negative electrode tab 3 on the other side wall of the support beam 5.
Preferably, the width of the hollowed-out groove 8 is more than or equal to 2mm than the width of a welding seam when the positive electrode tab 2 and the negative electrode tab 3 are welded, and the depth of the hollowed-out groove 8 is more than 3mm.
Specifically, experiments prove that the width of the hollowed-out groove 8 is at least 2mm larger than the width of the welding seam, and the depth is more than 3mm, so that the electrode support 4 can be free from scalding.
In summary, the utility model provides a battery module with double-layer tabs, wherein a module supporting beam 5 can be directly used as a carrier for bending and welding lamination of a positive electrode tab 2 and a negative electrode tab 3 which are connected, a pole outlet bracket 4 is a pole outlet plastic bracket for insulating a plurality of single batteries 1, and a welding tool can be used for pressing and welding when bending and welding lamination of the positive electrode tab 2 and the negative electrode tab 3, so that a plurality of single batteries are connected in series; when the anode copper tab is folded and laminated, the anode copper tab can be folded on the other side wall of the supporting beam 5, then the anode aluminum tab is folded above the anode copper tab, the anode copper tab and the anode aluminum tab are pressed and welded through a welding tool, the folding sequence mainly considers that the copper melting point is far higher than aluminum, the welding temperature required by the anode copper tab to be placed at the uppermost is far higher than the temperature born by the anode aluminum tab, poor welding quality can be caused, meanwhile, the plastic melting point of the anode plastic bracket 4 is far lower than that of the anode tab 2 and the anode tab 3, in order to avoid scalding the anode bracket 4 when welding, the local temperature of the welding position of the anode tab 2 and the anode tab 3 is higher than that of the plastic melting point, the anode tab 2 and the anode tab 3 are welded under the welding position of the double-layer lamination, and the other side wall of the supporting beam 5 positioned on the anode bracket 4 is hollowed-out, and no scalding phenomenon of the anode bracket 4 can be realized; furthermore, the battery module is provided with a plurality of single batteries 1 which are electrically connected in a multi-string mode to complete target voltage and electric quantity, and the connected positive electrode lug 2 and negative electrode lug 3 do not need to be welded and connected by taking a bus bar as a carrier, so that the cost and weight of the battery module are reduced, the cost of the whole power battery system is reduced, the energy density of the system is improved, and the generation competitiveness is improved.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. A battery module of a double-layered tab, the module comprising:
the plurality of single batteries are sequentially arranged side by side, the positive electrode lug of one single battery and the negative electrode lug of the other single battery of two adjacent single batteries face the same direction, and the plurality of single batteries are connected in series;
two pole-outlet brackets are arranged between two adjacent single batteries, the two pole-outlet brackets are respectively close to two ends of each single battery, the positive pole lug of each single battery is connected with the negative pole lug of the adjacent single battery, and the connected positive pole lug and the negative pole lug are bent and laminated on the side wall of one pole-outlet bracket.
2. The battery module of claim 1, wherein the electrode outlet bracket comprises a support beam and two side beams, one ends of the two side beams are respectively connected to two ends of the support beam in an integrated manner, one side wall of the support beam is positioned between the two side beams in an integrated manner, the surfaces of the single batteries are attached to the plate surface of the support plate, and the connected positive electrode tab and negative electrode tab are bent and welded and laminated on the other side wall of one support beam.
3. The battery module of claim 2, wherein the other side wall of the support beam is provided with a hollow groove at a position corresponding to the stacked positive electrode tab and negative electrode tab.
4. The battery module of claim 2, wherein gaps are respectively arranged between two ends of the supporting plate and two side beams, flanges are respectively arranged on two edge walls of the single battery, and the two flanges are respectively inserted into the two gaps.
5. The battery module of claim 2, wherein the positive tab is a positive aluminum tab.
6. The battery module of claim 5, wherein the negative tab is a negative copper tab.
7. The battery module of claim 6, wherein the negative tab is laminated between the positive tab and the other side wall of the support beam.
8. The battery module of claim 1, wherein the single cells are pouch cells.
9. The battery module of claim 1, wherein the outgoing electrode support is an outgoing electrode plastic support.
10. The battery module of claim 3, wherein the width of the hollowed-out groove is greater than or equal to 2mm than the width of a welding seam when the positive electrode tab and the negative electrode tab are welded, and the depth of the hollowed-out groove is greater than 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320144508.3U CN220106816U (en) | 2023-02-07 | 2023-02-07 | Battery module with double-layer lugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320144508.3U CN220106816U (en) | 2023-02-07 | 2023-02-07 | Battery module with double-layer lugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106816U true CN220106816U (en) | 2023-11-28 |
Family
ID=88871303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320144508.3U Active CN220106816U (en) | 2023-02-07 | 2023-02-07 | Battery module with double-layer lugs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106816U (en) |
-
2023
- 2023-02-07 CN CN202320144508.3U patent/CN220106816U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2201629B1 (en) | Module pack for secondary battery | |
| EP2615666B1 (en) | Battery pack with high output and large capacity | |
| JP5456254B2 (en) | Secondary battery pack having an alternating orientation configuration | |
| EP2328201B1 (en) | Battery Pack | |
| KR101271567B1 (en) | Battery Module of Structure Having Fixing Member Inserted into Through-Hole of Plates and Battery Pack Employed with the Same | |
| EP2645454B1 (en) | Bus bar assembly having a novel structure | |
| KR102378374B1 (en) | Battery Module Having Bus-bar and Battery Pack | |
| WO2013080136A1 (en) | A battery module | |
| CN212257553U (en) | Battery structure | |
| CN109904378A (en) | Lithium battery energy storage battery module and lithium battery energy storage battery mould group | |
| CN107742692A (en) | A kind of power battery module and electric car | |
| CN109742304A (en) | A kind of power battery module and electric vehicle | |
| CN216597893U (en) | Laminate polymer battery core module and laminate polymer battery | |
| CN220106816U (en) | Battery module with double-layer lugs | |
| CN211150661U (en) | Electricity core unit and electricity core module | |
| CN203812584U (en) | Heavy-current busbar | |
| CN116666914A (en) | Battery module with double-layer lugs | |
| CN207353369U (en) | A kind of battery module | |
| CN211879486U (en) | Utmost point ear fixed knot of soft-packaged electrical core constructs | |
| CN209571474U (en) | A kind of power battery module and electric vehicle | |
| CN209607828U (en) | Lithium battery energy storage battery module and lithium battery energy storage battery mould group | |
| CN219203445U (en) | Battery module with multilayer lugs | |
| CN219658919U (en) | Battery cell charge-discharge balancing structure and battery pack with same | |
| CN220585403U (en) | Novel high-adaptation power supply Chi Mozu | |
| CN220065961U (en) | Soft packet of electric core PACK connects structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |