CN203812584U - Heavy-current busbar - Google Patents
Heavy-current busbar Download PDFInfo
- Publication number
- CN203812584U CN203812584U CN201320895446.6U CN201320895446U CN203812584U CN 203812584 U CN203812584 U CN 203812584U CN 201320895446 U CN201320895446 U CN 201320895446U CN 203812584 U CN203812584 U CN 203812584U
- Authority
- CN
- China
- Prior art keywords
- copper coin
- nickel sheet
- bar
- hole
- electric current
- 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.)
- Expired - Lifetime
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 132
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 66
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910052802 copper Inorganic materials 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 59
- 238000003466 welding Methods 0.000 claims description 27
- 238000005452 bending Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000000007 visual 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
Abstract
The utility model discloses a heavy-current busbar, which comprises a copper plate. The heavy-current busbar further comprises upper nickel sheets and a lower nickel sheet respectively arranged on the upper side and the lower side of the copper plate and fixedly connected with the copper plate. The lower nickel sheet parts corresponding to battery tabs are provided with a plurality of first through holes. The lower nickel sheet is welded with the corresponding tabs through the edges of the first through holes. The copper plate is provided with a plurality of second through holes in a way to correspond to the tabs. Lower bending parts are formed on the two sides of the upper nickel sheet parts corresponding to tab rivets. The lower bending parts pass through the second through holes and the first through holes and then are welded and connected with corresponding tabs. By adopting two layers of nickel sheets, the busbar can improve the current through capacity. The external connection bottleneck of an electrical core adopting the structure is broken. Charging and discharging multiplying power (i.e. the flow capacity) after the electrical core is bunched can be enhanced. Heating can be alleviated while the heat radiation capability can be improved. The stability, safety, electrical performances of a battery pack can be enhanced. The service lifetime of the battery pack can be further prolonged.
Description
Technical field
The utility model relates to lithium ion battery preparing technical field, particularly relates to a kind of large electric current bus-bar.
Background technology
Because lithium ion battery has the advantages such as voltage is high, capacity is large, volume is little, quality is light, and operating temperature range is wide, lithium ion battery group has been widely used in every field, is especially applied to motor vehicle field.Electric vehicle battery string number are more at present, in order to guarantee the safety in battery pack process of assembling and to improve production technology, and the maintainability after sale of battery, battery system is taked modularized design, and the battery strings of different numbers also together, forms a module.
Intercell connection between general module connects by thinner bus-bar, because the charging and discharging currents of small-sized battery core is relatively little, it is enough that single monolayer thick 0.3mm nickel sheet adds the conveyance capacity of individual layer copper coin, and electrokinetic cell, the charging and discharging currents of multiplying power battery core as large in square is larger, traditional approach is difficult to meet the demands, and two-layer nickel row directly stack welding be difficult to realize because of process technology limit, the outer bottleneck that has been connected to form of cell polar ear like this, the performance of battery core can not be represented completely, as discharged and recharged by battery core practical capacity, the outer connection position heating amount of lug is large, as the heat energy that can not shed in time, fail safe is difficult to ensure card.
Utility model content
The purpose of this utility model is for the technological deficiency existing in prior art, and a kind of large electric current bus-bar is provided.
For realizing the technical scheme that the purpose of this utility model adopts, be:
A kind of large electric current bus-bar, the upper nickel sheet and the lower nickel sheet that comprise copper coin and be separately positioned on the upper and lower both sides of copper coin and be fixedly connected with copper coin, described lower nickel sheet is provided with a plurality of the first through holes and passes through the edge of the first through hole and corresponding tab welding with the lug corresponding position of battery, described copper coin and lug are provided with a plurality of the second through holes accordingly, the both sides at the described relative lug rivet of upper nickel bar place form downward bent part, and described downward bent part is connected with the first through hole and with corresponding tab welding through the second through hole.
Described upper nickel bar is formed with lug rivet corresponding position the boss raising up and the wing plate that is connected of boss both sides is bent to form downward bent part downwards.
Described upper nickel bar and lug rivet corresponding position are formed with through hole, and described through hole both sides hollowly form and have downward bent part downwards, are formed with slotted hole to be connected with tab welding on the bottom surface of described downward bent part.
Described lower nickel sheet is provided with two row, first through hole corresponding with the both positive and negative polarity of two Battery packs respectively accordingly, is provided with row or two row downward bent parts on described upper nickel sheet.
Described copper coin is two, and described lower nickel sheet is arranged on the lower surface of lower copper coin, and described upper nickel sheet is arranged on the upper surface of copper coin, on described upper copper coin and lower copper coin, is provided with accordingly the second identical through hole.
On described lower copper coin, be formed with double-screw bolt, be provided with the connecting hole that can allow described double-screw bolt to pass on described upper copper coin, the nut coordinating with described double-screw bolt will obtain lower copper coin and be fixedly connected with upper copper coin.
The first described through hole periphery offers the welding line of rabbet joint.
Described upper nickel sheet and the thickness of lower nickel sheet are at 0.3mm.
Described copper plate thickness is 1-3mm.
Described upper nickel sheet and lower nickel sheet are connected to an integral body with copper coin by laser welding respectively.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts two-layer nickel sheet, thereby can improve electric current handling capacity, break through the outer connection bottleneck of this kind of structure battery core, improving the charge-discharge magnification of this kind of battery core after is in groups conveyance capacity, reduce heating, increase heat-sinking capability simultaneously, can improve stability, fail safe, electrical property and the useful life of battery pack.
Accompanying drawing explanation
Figure 1 shows that the utility model the first embodiment schematic diagram;
Figure 2 shows that the first embodiment composite state structural representation;
Figure 3 shows that the second embodiment bus-bar composite state structural representation;
Fig. 4 is the explosive view shown in Fig. 3;
Figure 5 shows that the upper nickel chip architecture schematic diagram of the second embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Electrokinetic cell conventionally requires in actual applications many battery strings, composes in parallel the battery pack of high pressure, large electric current, for guaranteeing the high efficient and reliable of battery pack, the battery pack of performance consistent (or close as much as possible) need to be fitted together, as shown in Figure 1, each rectangular cell is fixed and needed afterwards in groups to utilize bus-bar to carry out serial or parallel connection.
The first embodiment:
As shown in 1 and 2 figure, the large electric current bus-bar of the utility model the first embodiment comprises that thickness is the copper coin 1 of 2mm and the upper nickel sheet 2 being fixedly connected with by laser welding with copper coin 1 respectively and lower nickel sheet 3, described upper nickel sheet 2 and the thickness of lower nickel sheet 3 are at 0.3mm, described lower nickel sheet and the lug corresponding position of the both positive and negative polarity of two adjacent groups battery be provided with two row the first through holes 31 edge by the first through hole respectively with corresponding tab welding, described copper coin 1 is provided with two row the second through holes 11 accordingly with lug, described upper nickel bar 2 and lug rivet 90 corresponding positions are formed with the boss raising up and downward bent part 22 bending downwards of both sides is connected with the first through hole and with corresponding tab welding through the second through hole.Specifically, when bus-bar is for connecting the both positive and negative polarity of two Battery packs, while being used for connecting two Battery packs, described upper nickel sheet 2 is two and is separately positioned on the left and right sides of copper coin, and described lower nickel sheet is sheet and only has a slice, and the boss both sides of described upper nickel sheet are formed with the downward bent part of downward bending, described downward bent part edge and battery pole ear 80 are welded to connect, meanwhile, for improving welding operation, at the first through hole periphery, offer the welding line of rabbet joint 32.Wherein, in the design of the hole size shape of the first through hole, the second through hole, only need to meet the impact that can flow out operating space and evade rivet, it is the downward bent part of upper nickel sheet simultaneously, connect wing plate and reserve welding space, general hole is that middle little two ends are large, and connect wing plate, can be the trend of dwindling to flow out enough spaces and visual angle at two ends, is formed with inspection hole at described boss center simultaneously.
During certainly for parallel connection, as by positive pole when series connection of both sides, on the lower nickel sheet of described bus-bar and copper coin, offer accordingly a row through hole, do not repeat them here.
; two nickel sheets and respectively copper coin weld together and the bottom surface of two nickel sheets at grade; in two nickel sheet connections, do irregular type and process and stay the welding line of rabbet joint simultaneously; prevent two nickel sheets overlap impact welding and with the conductivity of lug; the setting of gap and the line of rabbet joint simultaneously has also reserved space for cell polar ear carries out resistance welded, improves whole operability.
The second embodiment
As in Figure 3-5, the present embodiment is similar to the above embodiments, its difference is, it comprises two copper coins, upper copper coin 6 and lower copper coin 7, it is thick that described copper coin is 2mm, described lower nickel sheet 8 is arranged on the lower surface of lower copper coin, described upper nickel sheet 9 is arranged on the upper surface of copper coin, described copper coin and lug corresponding position are provided with rectangle the second through hole 71, on described lower nickel sheet, be provided with rectangle the first through hole 81, the first described through hole periphery is also provided with the line of rabbet joint 82 for welding, described upper nickel sheet and rivet corresponding position are formed with through hole, through hole both sides form downward bent part 91 downwards highlightedly, described downward bent part bottom is formed with slotted hole 92 to be connected with tab welding.Wherein, described upper copper coin can be fixedly connected with by screw with lower copper coin, can only depend on the welding of upper and lower nickel sheet and lug to realize it fixes, preferably, on described lower copper coin, be formed with the double-screw bolt 72 extending straight up, on described upper copper coin, be provided with the connecting hole 62 that can allow described double-screw bolt to pass, the nut coordinating with described double-screw bolt will obtain lower copper coin and be fixedly connected with upper copper coin.
Described upper nickel sheet and lower nickel sheet are connected to an integral body with upper copper coin and lower copper coin by laser welding respectively.When welding, first lower nickel sheet and lower copper coin are welded on the lug of battery core, then upper nickel sheet and upper copper coin are welded on the lug of battery core again.
In sum, the utility model adopts sandwich type structural design, has overcome the drawback that double layer nickel sheet can not connect, and has effectively realized the effect of double layer nickel sheet conduction, and meanwhile, upper nickel sheet does not affect the welding with lug at cell polar ear rivet upside; And upper and lower two-layer nickel sheet respectively and tab welding, mutually unaffected during welding; Increase overcurrent ability, reduce caloric value; Also the bonding area that does not reduce bindiny mechanism and lug is pad simultaneously; Strengthen the contact-making surface with air, increased heat-sinking capability.And do not change original technique, produce without new procuring equipment again.And copper coin is when providing connection basic, also has good conductive radiator effect, and by structures such as bendings, realize the structure space of bus-bar, greatly improved its radiating effect.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. a large electric current bus-bar, it is characterized in that, the upper nickel sheet and the lower nickel sheet that comprise copper coin and be separately positioned on the upper and lower both sides of copper coin and be fixedly connected with copper coin, described lower nickel sheet is provided with a plurality of the first through holes and passes through the edge of the first through hole and corresponding tab welding with the lug corresponding position of battery, described copper coin and lug are provided with a plurality of the second through holes accordingly, the both sides at the described relative lug rivet of upper nickel bar place form downward bent part, and described downward bent part is connected with the first through hole and with corresponding tab welding through the second through hole.
2. large electric current bus-bar as claimed in claim 1, is characterized in that, described upper nickel bar is formed with lug rivet corresponding position the boss raising up and the wing plate that is connected of boss both sides is bent to form downward bent part downwards.
3. large electric current bus-bar as claimed in claim 1, it is characterized in that, described upper nickel bar and lug rivet corresponding position are formed with through hole, and described through hole both sides hollowly form and have downward bent part downwards, are formed with slotted hole to be connected with tab welding on the bottom surface of described downward bent part.
4. large electric current bus-bar as claimed in claim 1, is characterized in that, described lower nickel sheet is provided with two row, first through hole corresponding with the both positive and negative polarity of two Battery packs respectively accordingly, is provided with row or two row downward bent parts on described upper nickel sheet.
5. the large electric current bus-bar as described in claim 1-4 any one, it is characterized in that, described copper coin is two, described lower nickel sheet is arranged on the lower surface of lower copper coin, described upper nickel sheet is arranged on the upper surface of copper coin, on described upper copper coin and lower copper coin, is provided with accordingly the second identical through hole.
6. large electric current bus-bar as claimed in claim 5, it is characterized in that, on described lower copper coin, be formed with double-screw bolt, be provided with the connecting hole that can allow described double-screw bolt to pass on described upper copper coin, the nut coordinating with described double-screw bolt will obtain lower copper coin and be fixedly connected with upper copper coin.
7. large electric current bus-bar as claimed in claim 1, is characterized in that, the first described through hole periphery offers the welding line of rabbet joint.
8. large electric current bus-bar as claimed in claim 1, is characterized in that, described upper nickel sheet and the thickness of lower nickel sheet are at 0.3mm.
9. large electric current bus-bar as claimed in claim 1, is characterized in that, described copper plate thickness is 1-3mm.
10. large electric current bus-bar as claimed in claim 1, is characterized in that, described upper nickel sheet and lower nickel sheet are connected to an integral body with copper coin by laser welding respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895446.6U CN203812584U (en) | 2013-12-30 | 2013-12-30 | Heavy-current busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895446.6U CN203812584U (en) | 2013-12-30 | 2013-12-30 | Heavy-current busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812584U true CN203812584U (en) | 2014-09-03 |
Family
ID=51451306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320895446.6U Expired - Lifetime CN203812584U (en) | 2013-12-30 | 2013-12-30 | Heavy-current busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812584U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914334A (en) * | 2015-08-12 | 2016-08-31 | 北京长城华冠汽车科技股份有限公司 | Electrode tab connection device, power battery and automobile |
| CN106450130A (en) * | 2016-11-16 | 2017-02-22 | 上海电巴新能源科技有限公司 | Copper-nickel conducting plate and power battery box with copper-nickel conducting plate |
| CN106469885A (en) * | 2015-08-14 | 2017-03-01 | 奥迪股份公司 | It is used in particular for energy storage equipment, motor vehicles and the method manufacturing energy storage equipment of motor vehicles |
| CN109638214A (en) * | 2019-01-31 | 2019-04-16 | 广州小鹏汽车科技有限公司 | A kind of connection structure and battery modules of battery electrode column and busbar connector |
-
2013
- 2013-12-30 CN CN201320895446.6U patent/CN203812584U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914334A (en) * | 2015-08-12 | 2016-08-31 | 北京长城华冠汽车科技股份有限公司 | Electrode tab connection device, power battery and automobile |
| CN105914334B (en) * | 2015-08-12 | 2018-07-17 | 北京长城华冠汽车科技股份有限公司 | A kind of lug attachment device, power battery and automobile |
| CN106469885A (en) * | 2015-08-14 | 2017-03-01 | 奥迪股份公司 | It is used in particular for energy storage equipment, motor vehicles and the method manufacturing energy storage equipment of motor vehicles |
| CN106469885B (en) * | 2015-08-14 | 2020-05-26 | 奥迪股份公司 | Energy storage device, in particular for a motor vehicle, motor vehicle and method for producing an energy storage device |
| US10673051B2 (en) | 2015-08-14 | 2020-06-02 | Audi Ag | Energy storage arrangement in particular for a motor vehicle, motor vehicle and method for producing an energy storage arrangement |
| CN106450130A (en) * | 2016-11-16 | 2017-02-22 | 上海电巴新能源科技有限公司 | Copper-nickel conducting plate and power battery box with copper-nickel conducting plate |
| CN109638214A (en) * | 2019-01-31 | 2019-04-16 | 广州小鹏汽车科技有限公司 | A kind of connection structure and battery modules of battery electrode column and busbar connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204464348U (en) | Battery pack and battery operating system | |
| KR100889243B1 (en) | Method of Preparing Battery Core Pack | |
| US9466822B2 (en) | Battery module with a flexible bus | |
| JP5456254B2 (en) | Secondary battery pack having an alternating orientation configuration | |
| CN203326006U (en) | Battery module | |
| JP5532278B2 (en) | Battery with multiple individual cells | |
| CN208959324U (en) | Battery module assembly, battery pack and electric car | |
| KR100908569B1 (en) | Manufacturing method of battery module | |
| JP5367731B2 (en) | Electrode terminal connection member for battery module | |
| CN102696131A (en) | Battery module and battery pack | |
| CN107369863A (en) | Sub-component and the battery component with the sub-component | |
| CN106784563B (en) | Lithium battery module busbar connection structure | |
| CN203812584U (en) | Heavy-current busbar | |
| WO2019124107A1 (en) | Busbar and battery laminate | |
| KR101312425B1 (en) | Secondary battery pack and connector utilized therein | |
| EP2874204B1 (en) | Battery assembly | |
| CN104681878A (en) | Manufacturing method of winding type lithium ion battery and winding type lithium ion battery | |
| US20120183831A1 (en) | Energy storage module and method for manufacturing the same | |
| CN105428583B (en) | A kind of power battery welding structure and welding method in groups | |
| CN207353369U (en) | A kind of battery module | |
| CN103022553A (en) | Overlapped type lithium ion battery | |
| CN204156017U (en) | Electrode slice structure and battery modules | |
| CN109994679A (en) | A kind of battery core holding element | |
| CN107342433A (en) | Lithium battery | |
| JP5625119B2 (en) | Conductive connection structure of secondary battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220126 Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong Patentee after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Address before: 300384 Tianjin Xiqing District Binhai hi tech Industrial Development Zone (outer ring) 38 Haitai South Road Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |