CN203826470U - Welding piece for combining batteries - Google Patents
Welding piece for combining batteries Download PDFInfo
- Publication number
- CN203826470U CN203826470U CN201420239929.5U CN201420239929U CN203826470U CN 203826470 U CN203826470 U CN 203826470U CN 201420239929 U CN201420239929 U CN 201420239929U CN 203826470 U CN203826470 U CN 203826470U
- Authority
- CN
- China
- Prior art keywords
- welded
- main body
- connect
- sheet
- body substrate
- 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
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 welding piece for combining batteries. A main body substrate is a high-conductivity metal chip, and through holes are formed in positions, corresponding to battery electrodes, of the main body substrate; the welding piece further comprises weldingconnection pieces slightly larger than the through holes in shape and inlaid in the through holes, middle parts of the welding connection pieces penetrate through the through holes to be welded together with the batteryelectrodes located on the back surface of the main body substrate, peripheries of the welding connection pieces and the main body substrate are welded together in a sleeved manner, the welding connection pieces are connection pieces provided with composite layers, middle parts are concave inwards, and a layer of thin copper film is laid on one surface, which is connected with each battery electrode and the main body substrate, of each welding connection piece. The welding piece has the good conduction performance, can be spot-welded firmly and easily, can meet requirements in the aspect of welding and is applicable to large-current charging and discharging.
Description
Technical field
The utility model belongs to assembled battery accessory field, is specifically related in a kind of assembled battery for welding the bonding pad of cell substrate and battery electrode.
Background technology
Existing battery, as dry cell or lithium battery, in order to improve its discharge performance, mostly in parallel a plurality of single battery pack are fitted together,, battery case by the identical one-level of each battery by copper substrate and steel is fixed together with the situation of welding, thereby obtains battery pack or assembled battery.Because the material behavior of the battery electrode of copper cell substrate and steel is different, both are also not suitable for direct welding, that is, the poor effect of welding, is nearly all rosin joint.For this reason, in practice, often by one independently bonding pad both are welded together.
The welding battery sheet that assembled battery group adopts requires: one, self internal resistance rate of bonding pad is low, and electric conductivity is good; During two, with battery electrode welding, easily butt-joint, after welding, substrate is connected firm, firm with electrode.But with the actual effect of butt-joint, self internal resistance of bonding pad is lower, and electric conductivity is better, and its welding effect is just poorer, and rosin joint rate is also higher; On the contrary, self internal resistance of bonding pad is higher, and electric conductivity is poorer, and its welding effect is just better, and rosin joint rate is lower.Such as, adopt copper sheet to be used as bonding pad, although electric conductivity is good, the poor effect of welding, is almost rosin joint.If adopt stainless steel substrates to be used as bonding pad, although welding effect is fine, its self-conductive poor performance.If adopt pure nickel as bonding pad, although its welding effect is relatively good, electric conductivity is also poor.How taking into account the fixing of conductivity and welding, is an industry the most nerve-racking difficult problem all the time.
Summary of the invention
The purpose of this utility model is for the above-mentioned defect existing in prior art, the bonding pad that provides a kind of assembled battery that can take into account electric conductivity and welding effect to use.
The purpose of this utility model realizes by the following technical solutions: the bonding pad that assembled battery is used, and the sheet metal that main body substrate is high conductivity, arranges through hole at the correspondence position of main body substrate and battery electrode; Also comprise the sheet that is welded to connect that is slightly larger than described each shape of through holes and is embedded in each through hole, the described sheet central authorities that are welded to connect are through after described through hole, weld together with the battery electrode that is positioned at described main body substrate reverse side, the described surrounding that is welded to connect sheet and the weldering of described main body substrate are nested together, and it is characterized in that: described in be welded to connect sheet and be laid with layer of copper made membrane with the one side that battery electrode, main body substrate join.
Preferably, described in, be welded to connect sheet central authorities indent; The central authorities that are welded to connect sheet are provided with cross or I-shaped welding process hole;
Described copper film is that the mode with high temperature rolling is fitted in and is welded to connect on sheet; Or described in be welded to connect sheet be steel or nickel material as matrix, then at it, simultaneously make layer of copper made membrane in the mode of high temperature rolling.
The described thickness that is welded to connect the copper film on sheet is between 0.03mm--0.2mm.
Adopt after the utility model, owing to being provided with layer of copper made membrane for drawing the sheet that is welded to connect of battery electrode, when being welded to connect sheet and battery electrode butt-joint, the copper film that solder joint goes out will become thinner because being heated and pushing, even get out of the way, than be easier to weld together be welded to connect sheet matrix material be connected with electrode firm, firmly, all the other positions outside solder joint are because of the existence of copper film, conduction is good, therefore the bonding pad that assembled battery described in the utility model is used is during for battery pack, conduction is good, the internal resistance of cell is little, it is firm that bonding pad is connected with battery, firmly, battery pack steady quality, adapt to large current charge and electric discharge.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of the utility model main body substrate.
Fig. 2 is the cross-sectional view of the main body substrate shown in Fig. 1.
Fig. 3 is a kind of cross-sectional view that is welded to connect sheet described in the utility model.
Fig. 4 is a kind of Facad structure schematic diagram that is welded to connect sheet described in the utility model.
Fig. 5 is the cross-sectional view that another kind described in the utility model is welded to connect sheet
Fig. 6 is the bonding pad used of assembled battery described in the utility model and the package assembly schematic diagram of battery electrode.
Embodiment
As depicted in figs. 1 and 2, main body substrate 1 is provided with one or more through holes 11 in central authorities, and the position of through hole combining form general with shape and battery is corresponding, electrode 3 positions that each through hole is battery.Main body substrate 1 is made by the good copper material of electric conductivity, for the respective electrode of a plurality of batteries is connected together.The quantity of through hole can be 1*2,1*3,2*2,3*3 etc., according to the combining form of battery, determines.
Fig. 3 is a kind of profile that is welded to connect sheet 2 described in the utility model, and as shown in Figure 4, central authorities are with cross or I-shaped welding process hole 24 for its front shape.Being welded to connect sheet 2 is slightly larger than aforementioned through-hole 11, is applicable to be embedded in the laminated structure on through hole 11 for surface configuration, this basis material that is welded to connect sheet adopts steel material or the nickel-base material of easily welding, as steel disc or nickel sheet, layer of copper made membrane or Copper Foil 21 are laid, made in its back side generally by the mode of high temperature rolling.That is to say, the sheet that is welded to connect described in the utility model is a kind of composite welding brace with two layers of material.
For the electrode 3 with battery in conjunction with, be connected better, be also convenient to welding, be generally made into the central concave shape shown in Fig. 5, interior recess 22 as shown in the figure.This central authorities' concave shape can specifically form spill platform or step shape by Sheet Metal Forming Technology.
During actual assembled, by be welded to connect sheet 2 with the aspect of copper film 21 towards electrode 3, be welded to connect the central authorities of sheet 2 through after through hole 11, weld together with the battery electrode 3 that is positioned at the reverse side of main body substrate 1, be welded to connect sheet 2 and set up through hole 11 peripheries at main body substrate 1 with the aspect surrounding 23 of copper film 21, and welded together with described main body substrate 1 cover.During concrete welding, two pads can be placed in respectively to cross or I-shaped both sides, carry out electric welding.Near copper film 21 solder joint is because its thickness is original just thinner, and after being squeezed or being heated, this copper film also can move about and become thinner to periphery, thereby, strong degree, stability influence to welding are very micro-, that is to say, now welding quality still depends on the welding performance that is welded to connect the basis material of sheet 2 and the material of battery electrode 3, generally comparatively reliable.Meanwhile, all the other positions outside solder joint, battery electrode 3, are welded to connect the place that sheet 2, main body substrate 1 mutually combine, set up and all rely on the good copper-based materials of electric conductivity such as copper film 21 to link together, as shown in Figure 6.The bonding pad that the assembled battery of making is like this used can guarantee good electric conductivity, the internal resistance of cell after combination is very low, and bonding pad welding quality is firm, reliable simultaneously, almost there is no the appearance of rosin joint phenomenon, battery performance is stable, adapts to large current charge and electric discharge.
In practice, described in be welded to connect the copper film 21 on sheet thickness be between 0.03mm--0.2mm, between 0.1mm--0.15mm, effect is best, can take into account well conductivity and welding quality.Because too thin, can affect conductivity, the too thick welding quality that significantly reduces, easily forms rosin joint.
Claims (6)
1. the bonding pad that assembled battery is used, the sheet metal that main body substrate is high conductivity, arranges through hole at the correspondence position of main body substrate and battery electrode; Also comprise the sheet that is welded to connect that is slightly larger than described each shape of through holes and is embedded in each through hole, the described sheet central authorities that are welded to connect are through after described through hole, weld together with the battery electrode that is positioned at described main body substrate reverse side, the described surrounding that is welded to connect sheet and the weldering of described main body substrate are nested together, and it is characterized in that: described in be welded to connect sheet and be laid with layer of copper made membrane with the one side that battery electrode, main body substrate join.
2. assembled battery bonding pad according to claim 1, is characterized in that: described in be welded to connect sheet central authorities indent.
3. arbitrary assembled battery bonding pad according to claim 1 and 2, is characterized in that: described in be welded to connect sheet central authorities be provided with cross or I-shaped welding process hole.
4. assembled battery bonding pad according to claim 3, is characterized in that: described in be welded to connect sheet be steel or nickel material as matrix, then at it, simultaneously make layer of copper made membrane in the mode of high temperature rolling.
5. assembled battery bonding pad according to claim 4, is characterized in that: described in be welded to connect the copper film on sheet thickness be between 0.03mm--0.2mm.
6. assembled battery bonding pad according to claim 5, is characterized in that: described in be welded to connect the copper film on sheet thickness be between 0.10mm--0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239929.5U CN203826470U (en) | 2014-05-12 | 2014-05-12 | Welding piece for combining batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239929.5U CN203826470U (en) | 2014-05-12 | 2014-05-12 | Welding piece for combining batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826470U true CN203826470U (en) | 2014-09-10 |
Family
ID=51481937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420239929.5U Active CN203826470U (en) | 2014-05-12 | 2014-05-12 | Welding piece for combining batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679987A (en) * | 2016-03-21 | 2016-06-15 | 广东莫莱卡焊接科技有限公司 | Flexible connecting board for power battery and machining method for soft connecting board |
| CN113381128A (en) * | 2021-05-28 | 2021-09-10 | 苏州速安行新能源科技有限公司 | Connecting sheet for battery and welding detection process thereof |
-
2014
- 2014-05-12 CN CN201420239929.5U patent/CN203826470U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679987A (en) * | 2016-03-21 | 2016-06-15 | 广东莫莱卡焊接科技有限公司 | Flexible connecting board for power battery and machining method for soft connecting board |
| CN113381128A (en) * | 2021-05-28 | 2021-09-10 | 苏州速安行新能源科技有限公司 | Connecting sheet for battery and welding detection process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102332611B (en) | Lithium ion battery pack and soldering method for single batteries therein | |
| JP2013539586A5 (en) | ||
| CN103441237B (en) | The chain type Li-ion batteries piles of buckle type lithium ion battery | |
| CN102097511B (en) | Progressively welded packaging module | |
| US20130034772A1 (en) | Battery | |
| CN203826470U (en) | Welding piece for combining batteries | |
| CN102489857A (en) | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap | |
| CN204179170U (en) | A kind of multi pole ears takeup type high-power battery | |
| CN201084777Y (en) | A lithium battery pole piece structure | |
| CN103531741B (en) | A kind of lithium ionic cell cathode ear pole component and preparation method thereof and lithium ion battery | |
| CN203288678U (en) | Welding structure for core connecting sheet and anode lug | |
| CN205177896U (en) | Riveted structure | |
| CN104091912A (en) | Multi-tab lithium battery core and welding method of multi-tab lithium battery tab | |
| CN108448043A (en) | A kind of composition metal lug and its soft pack cell | |
| CN205004378U (en) | Flexible package lithium battery | |
| CN204760469U (en) | Polymer lithium ion battery's anodal ear | |
| CN203721781U (en) | Aluminum shell cover plate for power lithium ion battery | |
| CN207272422U (en) | Lug surpasses welding machine | |
| CN104332587B (en) | The structure of a kind of aluminum alloy anode and manufacture method | |
| CN203721785U (en) | Battery aluminum shell cover plate | |
| CN208284545U (en) | Battery confluence connecting plate | |
| CN206497908U (en) | A kind of structure of flexible-packed battery | |
| CN203574037U (en) | Low-cost lithium battery pack connecting components | |
| CN203690395U (en) | Power battery connector and power battery pack thereof | |
| CN203445186U (en) | Button lithium ion battery and chain lithium ion battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |