CN105304852A - Electrode slice structure and battery module - Google Patents
Electrode slice structure and battery module Download PDFInfo
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- CN105304852A CN105304852A CN201410242749.7A CN201410242749A CN105304852A CN 105304852 A CN105304852 A CN 105304852A CN 201410242749 A CN201410242749 A CN 201410242749A CN 105304852 A CN105304852 A CN 105304852A
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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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Abstract
The invention provides an electrode slice structure and a battery module. The electrode slice structure comprises an aluminum electrode slice and a copper electrode slice, wherein the aluminum electrode slice is a disc form and is used for being electrically connected with a pole column, as a general positive output pole or a general negative output pole, of a battery of a battery module; the copper electrode slice is used for being connected with an external high-voltage connection terminal and comprises a disc base; the diameter of the copper electrode slice is smaller than the outer diameter of the aluminum electrode slice; the center axis of the copper electrode slice and the center axis of the aluminum electrode slice are coaxial lines; one side of the copper electrode slice is welded to the aluminum electrode slice while the other side of the copper electrode slice is screwed with the high-voltage connection terminal employing the center axis of the disc base as the center; and the battery module comprises the electrode slice structure which is respectively connected with the general positive output electrode and the general negative output pole. Therefore, the damage risks to a welding part and an electric connection part are greatly reduced; and the bonding strength and the stability between the electrode slice structure and the battery module and the high-voltage connection terminal are ensured; use of the plug-in high-voltage connection terminal is avoided; and the cost is reduced.
Description
Technical field
The present invention relates to battery technology field, particularly relate to a kind of electrode slice structure and battery modules.
Background technology
Along with the requirement that modern society protects low-carbon (LC), electrokinetic cell obtains applying more and more widely.Electrokinetic cell most distinguishing feature in the application of the field such as electric motor car and energy-accumulating power station is that modularization assembling forms battery modules.Referring to figs. 1 through Fig. 8, battery modules comprises: multiple battery 1, stack gradually and the series connection of the pole 11 of multiple battery 1 correspondence, to form battery pack, wherein the pole 11 end positive terminal end negative terminal that pole 11 is connected as total positive output pole of module of connecting is as total negative output pole of module; Two end plates 2, lay respectively at two of the stacking direction of described battery pack; Two side plates 3; And two electrode slice structures 4, be connected respectively in total positive output pole and total negative output pole.Electrode slice structure 4 comprises the aluminium electrode slice 41 and copper electrode sheet 42 that weld together.
Adopt aluminium electrode slice 41 mainly because the pole 11 of current battery 1 is aluminum alloy materials and same material is easy to welding.
When two electrode slice structures 4 are connected respectively after total positive output pole and total negative output pole, by with the copper electrode sheet 42 of high pressure splicing ear 5 grafting counter electrode chip architecture 4 that repeatedly can plug (i.e. plug-in), the series connection between different battery modules and/or parallel connection can be realized.Copper electrode sheet 42 is adopted to be, considerations such as good conductivity, thermal conductivity good good for the frictional property of resistance to plug.The high pressure splicing ear 5 of plug-in is mainly all foreign brand name reliably in the market, as very expensive in Costco Wholesales such as safe section, Coase reach.
In addition, connection between different battery modules also can adopt another mode, with reference to Fig. 6 and Fig. 7, be i.e. the exit of copper electrode sheet 42 offer circular hole R and by riveting method, bolt or screw rod B is riveted on circular hole R, being connected and fixed by bolt B between each battery modules.Which is not only very high to the required precision of circular hole R and bolt, also have more perforate, the operations such as riveted joint, bolt B in addition, the weld of copper electrode sheet 42 and aluminium electrode slice 41 (wherein indicates with W2 the region (i.e. welding region) that aluminium electrode slice contacts with the soldering tip (not shown) of welding machine, the welding region of the reality between copper electrode sheet 42 with aluminium electrode slice 41 is positioned at and welds with region W2), the weld of aluminium electrode slice 41 and pole 11 (wherein indicates with W3 the region (i.e. welding region) that aluminium electrode slice contacts with the weldering seat (not shown) of welding machine, the welding region of the reality between aluminium electrode slice 41 with pole 11 is positioned at and welds with region W3), above three places are not all at same position, the arm of force in fastener cycle is connected longer at bolt, certain destruction risk is had undoubtedly to the weld seam at other two place.
The end copper electrode sheet 42 that causes of total positive output pole of current battery module, total negative output pole passes through ultrasonic bonding with the aluminium electrode slice 41 of its lower floor.Hyperacoustic principle is the energy utilizing dither to produce, and by of the same race or dissimilar metal, by horizontal reciprocating movement, material surface molecules is oozed conjunction mutually under appropriate pressures and forms joint.Hyperacoustic welding region is limited, for ensureing conductive area and bond strength, needs in different position multiple welding to be added to enough bonding areas.
Known according to supersonic welding principle is can mutually interference apart from adjacent multiple welding, after the dither that once welds can destroy previous strength of joint; Previous joint dither once after hindering again.And multiple welding wastes man-hour and increases the wearing and tearing of machine.
Summary of the invention
In view of Problems existing in background technology, the object of the present invention is to provide a kind of electrode slice structure and battery modules, the welding position of the connecting portion that greatly can reduce high pressure splicing ear and copper electrode sheet relative to copper electrode sheet and aluminium electrode slice and the moment as total positive output pole or the total pole electrical joint of negative output pole of the battery of aluminium electrode slice and battery modules relatively, greatly can reduce the destruction risk to described welding position and electrical joint, the bond strength between electrode slice structure and battery modules and high pressure splicing ear and stability can be ensured.
Another object of the present invention is to provide a kind of electrode slice structure and battery modules, it can reduce costs.
To achieve these goals, in first aspect, the invention provides a kind of electrode slice structure, it comprises: aluminium electrode slice, is disc, and the pole as total positive output pole or total negative output pole for the battery with battery modules is electrically connected; And copper electrode sheet, for being connected with the high pressure splicing ear of outside.Copper electrode sheet comprises: disc base, the central axis that diameter is less than the external diameter of aluminium electrode slice, central axis and aluminium electrode slice is coaxial line, and side is welded in aluminium electrode slice and opposite side is bolted in high pressure splicing ear centered by the central axis of disc base.
To achieve these goals, in second aspect, the invention provides a kind of battery modules, it comprises: multiple battery, stack gradually and the series connection of the pole of multiple battery correspondence, to form battery pack, the end negative terminal of end positive terminal pole series connection as total positive output pole of module of wherein pole series connection is as total negative output pole of module; Two end plates, lay respectively at two of the stacking direction of described battery pack; And two side plates, lay respectively at the both sides of the battery pack with described two end plates.Wherein, described battery modules also comprises the electrode slice structure described be according to a first aspect of the present invention connected with total positive output pole and total negative output pole respectively.
Beneficial effect of the present invention is as follows:
In electrode slice structure according to the present invention, because the central axis of the disc base of copper electrode sheet and the central axis of aluminium electrode slice are coaxial line, disc base is bolted in high pressure splicing ear centered by the central axis of disc base, compare background technology, greatly reduce the be spirally connected welding position of position relative to disc base and aluminium electrode slice and the moment as total positive output pole or the total pole electrical joint of negative output pole of the battery of aluminium electrode slice and battery modules relatively between high pressure splicing ear with disc base, thus the destruction risk significantly reduced described welding position and electrical joint, ensure that the bond strength between electrode slice structure and battery modules and high pressure splicing ear and stability.
In electrode slice structure according to the present invention, high pressure splicing ear is bolted in the disc base of copper electrode sheet, avoids the high pressure splicing ear (especially foreign brand name) of the plug-in used in background technology, reduces cost.
Accompanying drawing explanation
Fig. 1 is the front view of existing electrode slice structure;
Fig. 2 is the upward view of Fig. 1, wherein with grid wire frame district, welding region is shown, this welding region is the region that aluminium electrode slice contacts with the soldering tip of welding machine;
Fig. 3 is the vertical view of Fig. 1, and wherein with the frame district of the particle of filling dispersion, welding region is shown, this welding region is the region that aluminium electrode slice contacts with the soldering tip of welding machine;
Fig. 4 is the view of the battery modules of the electrode slice structure adopting Fig. 1;
Fig. 5 is the electrode slice structure of Fig. 1 and the pole as total positive output pole of the battery of battery modules and the view that welds as the pole of total negative output pole, wherein fill with oblique line and welding region is shown, this region is the region that the weldering seated connection of aluminium electrode slice and welding machine touches;
Fig. 6 is the front view that the electrode slice structure of Fig. 1 is assembled with bolt;
Fig. 7 is the view that the electrode slice structure of Fig. 6 is welded with the pole of the battery of battery modules;
Fig. 8 is the view of the plug-in high pressure splicing ear of multiple battery modules connection in series-parallel, and wherein left side is fragmentary elevational view, and right side is end view;
Fig. 9 is the view of the aluminium electrode slice according to the electrode slice structure of inventing, and wherein (a) is vertical view, and (b) is front view;
Figure 10 is the view of an embodiment of the copper electrode sheet of electrode slice structure according to invention, and wherein (a) is vertical view, and (b) is front view;
Figure 11 is the view of an embodiment of the copper electrode sheet of electrode slice structure according to invention, and wherein (a) is vertical view, and (b) is front view;
Figure 12 is the view of an embodiment of the copper electrode sheet of electrode slice structure according to invention, and wherein (a) is vertical view, and (b) is front view;
Figure 13 is the view that the aluminium electrode slice of Fig. 9 and the copper electrode sheet of Figure 10 fit together, and wherein (a) is vertical view, and (b) is front view; C () is face upwarding view, wherein with the particle of dispersion, welding region is shown, this welding region is the region that aluminium electrode slice contacts with the soldering tip of welding machine; D () is birds-eye perspective, wherein with grid line, welding region is shown, this welding region is the region that the weldering seated connection of copper electrode sheet and welding machine touches;
Figure 14 is the view that the aluminium electrode slice of Fig. 9 and the copper electrode sheet of Figure 11 fit together, and wherein (a) is vertical view, and (b) is front view; C () is face upwarding view, wherein illustrate that this welding region is the region that aluminium electrode slice contacts with the soldering tip of welding machine with welding region with the particle of dispersion; D () is birds-eye perspective, wherein with grid line, welding region is shown, this welding region is the region that the weldering seated connection of copper electrode sheet and welding machine touches;
Figure 15 is the view that the aluminium electrode slice of Fig. 9 and the copper electrode sheet of Figure 12 fit together, and wherein (a) is vertical view, and (b) is front view; C () is face upwarding view, wherein with the particle of dispersion, welding region is shown, this welding region is the region that aluminium electrode slice contacts with the soldering tip of welding machine; D () is birds-eye perspective, wherein with grid line, welding region is shown, this welding region is the region that the weldering seated connection of copper electrode sheet and welding machine touches;
Figure 16 is the view of the battery modules of the electrode slice structure adopting Figure 13, wherein with grid line, welding region is shown, this welding region is the region that the weldering seated connection of copper electrode sheet and welding machine touches;
Figure 17 is the view that the electrode slice structure of Figure 16 is welded with the pole of the battery of battery modules, wherein in a perspective fashion and with oblique line filling mode, welding region is shown, with grid line, welding region is shown, this welding region is the region that the weldering seated connection of copper electrode sheet and welding machine touches;
Figure 18 is the front view of the high pressure splicing ear of electrode slice structure for being bolted in Figure 17.
Wherein, description of reference numerals is as follows:
1 battery 421 disc base
11 pole 4211 internal thread holes
2 end plate 422 cylindrical bosses
3 side plate 4221 external screw threads
4 electrode slice structure 4222 internal thread holes
41 aluminium electrode slice W4 welding regions
411 circular hollow-out parts 5 high pressure splicing ears
412 circumference 51 screwed holes
W1 welding region B bolt
W2 welding region R circular hole
W3 welding region
42 copper electrode sheets
Embodiment
Describe in detail with reference to the accompanying drawings according to electrode slice structure of the present invention and battery modules.
First electrode slice structure is according to a first aspect of the present invention described.
Before detailed description, it should be noted, in Figure 13-17, W1 indicates the welding region that aluminium electrode slice 41 welds with pole 11, W2 indicates the region that aluminium electrode slice 41 contacts with the soldering tip (not shown) of welding machine, and W4 indicates the region that copper electrode sheet 42 contacts with the weldering seat (not shown) of welding machine.With reference to Fig. 9 to Figure 18, electrode slice structure 4 according to the present invention comprises: aluminium electrode slice 41, is disc, and the pole 11 as total positive output pole or total negative output pole for the battery 1 with battery modules is electrically connected; And copper electrode sheet 42, for being connected with the high pressure splicing ear 5 of outside.Wherein, copper electrode sheet 42 comprises: disc base 421, the central axis that diameter is less than the external diameter of aluminium electrode slice 41, central axis and aluminium electrode slice 41 is coaxial line, and side (being bottom side in (b) of Figure 10-12) is welded in aluminium electrode slice 41 and opposite side (being upside in (b) of Figure 10-12) is bolted in high pressure splicing ear 5 centered by the central axis of disc base 421.
In electrode slice structure 4 according to the present invention, because the central axis of the disc base 421 of copper electrode sheet 42 and the central axis of aluminium electrode slice 41 are coaxial line, disc base 421 is bolted in high pressure splicing ear 5 centered by the central axis of disc base 421, so compare background technology, greatly reduce between high pressure splicing ear 5 with disc base 421 be spirally connected position relative to disc base 421 and aluminium electrode slice 41 welding position and relatively the battery 1 of aluminium electrode slice 41 and battery modules pole 11 electrical joint as total positive output pole or total negative output pole (such as, in fig. 17, the welding region W1 that aluminium electrode slice 41 welds with pole 11) moment, thus the destruction risk significantly reduced described welding position and electrical joint, ensure that the bond strength between electrode slice structure 4 and battery modules and high pressure splicing ear 5 and stability.
In electrode slice structure 4 according to the present invention, because high pressure splicing ear is bolted in the disc base 421 of copper electrode sheet 42, avoid the high pressure splicing ear (especially foreign brand name) of the plug-in used in background technology, reduce cost.
In an embodiment of electrode slice structure 4 according to the present invention, the central axis of aluminium electrode slice 41 and the battery 1 of battery modules be coaxial line as total positive output pole or as the central axis of the pole 11 of total negative output pole.This concentric structure can improve electrical connection intensity between this pole 11 making aluminium electrode slice 41 and battery 1 (when adopting welding, improving weld strength), make welding region W1 therebetween stressed evenly, ensure conductive capability therebetween.
In an embodiment of aluminium electrode slice 41, aluminium electrode slice 41 can be made up of aluminium sheet or aluminum alloy plate materials punching press and/or machine work.
In an embodiment of aluminium electrode slice 41, the thickness of aluminium electrode slice 41 can be 0.5mm ~ 5mm.
In an embodiment of aluminium electrode slice 41, the external diameter of aluminium electrode slice 41 can be 9mm ~ 40mm.
In an embodiment of electrode slice structure 4 according to the present invention, with reference to Fig. 9 to Figure 15, the center of aluminium electrode slice 41 can be provided with the circular hollow-out parts 411 worn as the pole 11 of total positive output pole or total negative output pole of the battery 1 for battery modules, and the diameter of the circular hollow-out parts 411 of aluminium electrode slice 41 is less than the diameter of the disc base 421 of copper electrode sheet 42.
In one embodiment, the circular hollow-out parts 411 of aluminium electrode slice 41 by punching press or can be cut into.Be preferably punching press, because impact style has high-efficiency and economic.In one embodiment, the diameter of the circular hollow-out parts 411 of aluminium electrode slice 41 can be 2mm ~ 30mm.
In an embodiment of electrode slice structure 4 according to the present invention, with reference to Figure 17, aluminium electrode slice 41 welds (in fig. 17, marking welding region with W1) with the pole 11 as total positive output pole or total negative output pole of the battery 1 of battery modules and is electrically connected with this pole 11 of battery 1 inside circumference 412 place or circumference 412.Weld its girth of a circle at aluminium electrode slice 41 at circumference 412 maximum, maximum bonding area can be obtained, to ensure bond strength and conductive area.When the central axis of the pole 11 as total positive output pole or total negative output pole of the central axis of aluminium electrode slice 41 and battery 1 is coaxial line, this concentric structure can improve the weld strength between this pole 11 making aluminium electrode slice 41 and battery 1, make welding region W1 therebetween stressed evenly, ensure conductive capability therebetween.In one embodiment, aluminium electrode slice 41 is in circumference 412 this pole 11 laser welding with battery 1.The energy density of laser welding is high, caloric value is little, production efficiency is high, be conducive to realizing automation.
In an embodiment of copper electrode sheet 42, copper electrode sheet 42 can be made into integration by copper coin or copper alloy plate punching press and/or machine work.
In an embodiment of electrode slice structure 4 according to the present invention, the disc base 421 of copper electrode sheet 42 and the welding of aluminium electrode slice 41 can be moment of torsion supersonic welding welding.When aluminium electrode slice 41 is provided with circular hollow-out parts 411, the circular hollow-out parts 411 of aluminium electrode slice 41 can be used as the center positioning hole of aluminium electrode slice 41 in moment of torsion supersonic welding welding process, to ensure copper electrode sheet 42 and aluminium electrode slice 41 concentric (i.e. coaxial line).
In an embodiment of electrode slice structure 4 according to the present invention, with reference to Figure 13 to Figure 15, the disc base 421 of copper electrode sheet 42 and the welding region (namely welding region is positioned at welding region W2) of aluminium electrode slice 41 can be a closed annulus.The weld strength that the annular welding region closed both ensure that therebetween in turn ensure that conductive capability therebetween.
In an embodiment of electrode slice structure 4 according to the present invention, the thickness of the disc base 421 of copper electrode sheet 42 can be 1mm ~ 20mm.
In an embodiment of electrode slice structure 4 according to the present invention, the diameter of the disc base 421 of copper electrode sheet 42 can be 6 ~ 35mm, is preferably 11mm.
In an embodiment of electrode slice structure 4 according to the present invention, with reference to Figure 12, Figure 15 and Figure 18, disc base 421 can be provided with internal thread hole 4211, high pressure splicing ear 5 is provided with screwed hole 51, disc base 421 and high pressure splicing ear 5 are spirally connected by outside bolt (not shown), and the central axis of the internal thread hole 4211 of disc base 421 and the central axis of disc base 421 are coaxial line (in other words, disc base 421 is bolted in high pressure splicing ear 5 centered by the central axis of disc base 421).
In an embodiment of electrode slice structure 4 according to the present invention, with reference to Figure 10, Figure 11, Figure 13 and Figure 14, copper electrode sheet 42 also can comprise: cylindrical boss 422, be arranged at above disc base 421, external diameter that diameter is less than disc base 421 and outer ring is provided with external screw thread 4221, high pressure splicing ear 5 is provided with screwed hole 51 and is bolted in external screw thread 4221; Wherein, the central axis of the disc base 421 of copper electrode sheet 42, the central axis of the cylindrical boss 422 of copper electrode sheet 42 and the central axis of aluminium electrode slice 41 are coaxial line (in other words, disc base 421 is bolted in high pressure splicing ear 5 centered by the central axis of disc base 421).The concentric structure of this coaxial line can to make when adopting annular welding region W1 (with reference to Figure 17) to the border of annular welding region W1 stressed evenly, the arm of force is minimum, ensure that maximum bond strength.
In an embodiment of electrode slice structure 4 according to the present invention, the height of the cylindrical boss 422 of copper electrode sheet 42 can be and is less than or equal to 20mm.
In an embodiment of electrode slice structure 4 according to the present invention, the diameter of the cylindrical boss 422 of copper electrode sheet 42 can be 3mm ~ 11mm, is preferably 5mm.
In an embodiment of electrode slice structure 4 according to the present invention, the outer ring of the cylindrical boss 422 of copper electrode sheet 42 can be inlayed with externally threaded steel facing, to provide external screw thread 4221.
In an embodiment of electrode slice structure 4 according to the present invention, with reference to Figure 11 and Figure 14, the inner ring of the cylindrical boss 422 of copper electrode sheet 42 can be provided with internal thread hole 4222, the center line of internal thread hole 4222 and the central axis of cylindrical boss 422 are coaxial line, for the terminal (not shown) of fixed voltage or temperature signal line.The concentric structure of this coaxial line the border of annular welding region W1 (with reference to Figure 17) can be made stressed evenly, the arm of force is minimum, ensure that maximum bond strength.
In an embodiment of electrode slice structure 4 according to the present invention, the whole outer surface of copper electrode sheet 42 or partial outer face can be coated with silver.Silver-platedly (see Figure 13-15) can to carry out after copper electrode sheet 42 is assembled.Silver-platedly can increase conductivity, improve corrosion resistance.
Following explanation battery modules according to a second aspect of the present invention.
With reference to Figure 16 and Figure 17, battery modules according to a second aspect of the present invention comprises: multiple battery 1, stack gradually and the series connection of the pole 11 of multiple battery 1 correspondence, to form battery pack, wherein the pole 11 end positive terminal end negative terminal that pole 11 is connected as total positive output pole of battery modules of connecting is as total negative output pole of battery modules; Two end plates 2, lay respectively at two of the stacking direction of described battery pack; And two side plates 3, lay respectively at the both sides of the battery pack with described two end plates 2.Wherein, described battery modules also comprise be connected with total positive output pole and total negative output pole respectively according to a first aspect of the present invention described in electrode slice structure 4.
In battery modules described according to a second aspect of the present invention, by being bolted in the high pressure splicing ear 5 on the pole 11 of total positive output pole or total negative output pole, series connection required between multiple battery modules and/or parallel connection can be realized.
In an embodiment of battery modules according to a second aspect of the present invention, battery 1 can be lithium ion battery, Ni-MH battery or cadmium cell.
Battery modules of the present invention is applicable in the project such as electric motor car, hybrid electric vehicle, energy storage needing battery.
Claims (10)
1. an electrode slice structure (4), comprising:
Aluminium electrode slice (41) is disc, and the pole (11) as total positive output pole or total negative output pole for the battery (1) with battery modules is electrically connected; And
Copper electrode sheet (42), for being connected with the high pressure splicing ear (5) of outside;
It is characterized in that, copper electrode sheet (42) comprising:
Disc base (421), the central axis that diameter is less than the external diameter of aluminium electrode slice (41), central axis and aluminium electrode slice (41) is coaxial line, and side is welded in aluminium electrode slice (41) and opposite side is bolted in high pressure splicing ear (5) centered by the central axis of disc base (421).
2. electrode slice structure (4) according to claim 1, it is characterized in that, the central axis of aluminium electrode slice (41) and the battery (1) of battery modules be coaxial line as total positive output pole or the central axis as the pole (11) of total negative output pole.
3. electrode slice structure (4) according to claim 1, it is characterized in that, the center of aluminium electrode slice (41) is provided with the circular hollow-out parts (411) worn as the pole (11) of total positive output pole or total negative output pole of the battery (1) for battery modules, and the diameter of the circular hollow-out parts (411) of aluminium electrode slice (41) is less than the diameter of the disc base (421) of copper electrode sheet (42).
4. electrode slice structure (4) according to claim 1, it is characterized in that, aluminium electrode slice (41) welds at circumference (412) place or circumference (412) inner side with the pole (11) as total positive output pole or total negative output pole of the battery (1) of battery modules and is electrically connected with this pole (11) of battery (1).
5. electrode slice structure (4) according to claim 1, is characterized in that, the disc base (421) of copper electrode sheet (42) and the welding region of aluminium electrode slice (41) are a closed annulus.
6. electrode slice structure (4) according to claim 1, it is characterized in that, disc base (421) is provided with internal thread hole (4211), high pressure splicing ear (5) is provided with screwed hole (51), disc base (421) and high pressure splicing ear (5) are spirally connected by outside bolt, and the central axis of the internal thread hole (4211) of disc base (421) and the central axis of disc base (421) are coaxial line.
7. electrode slice structure (4) according to claim 1, is characterized in that, copper electrode sheet (42) also comprises:
Cylindrical boss (422), be arranged at disc base (421) top, diameter is less than the external diameter of disc base (421) and outer ring is provided with external screw thread (4221), high pressure splicing ear (5) is provided with screwed hole (51) and is bolted in external screw thread (4221);
Wherein, the central axis of the disc base (421) of copper electrode sheet (42), the central axis of the cylindrical boss (422) of copper electrode sheet (42) and the central axis of aluminium electrode slice (41) are coaxial line.
8. electrode slice structure (4) according to claim 7, it is characterized in that, the inner ring of the cylindrical boss (422) of copper electrode sheet (42) is provided with internal thread hole (4222), the center line of internal thread hole (4222) and the central axis of cylindrical boss (422) are coaxial line, for the terminal of fixed voltage or temperature signal line.
9. the electrode slice structure (4) according to claim 6 or 7, is characterized in that, whole outer surface or the partial outer face of copper electrode sheet (42) are coated with silver.
10. a battery modules, comprising:
Multiple battery (1), stack gradually and the series connection of the pole (11) of multiple battery (1) correspondence, to form battery pack, wherein pole (11) the end positive terminal of connecting as total positive output pole of module and the end negative terminal that pole (11) is connected as total negative output pole of module;
Two end plates (2), lay respectively at two of the stacking direction of described battery pack; And
Two side plates (3), lay respectively at the both sides of the battery pack with described two end plates (2);
It is characterized in that, described battery modules also comprises the electrode slice structure (4) according to any one of claim 1-9 be connected with total positive output pole and total negative output pole respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410242749.7A CN105304852A (en) | 2014-06-03 | 2014-06-03 | Electrode slice structure and battery module |
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| CN201410242749.7A CN105304852A (en) | 2014-06-03 | 2014-06-03 | Electrode slice structure and battery module |
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| CN105304852A true CN105304852A (en) | 2016-02-03 |
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| US10971784B2 (en) | 2017-07-18 | 2021-04-06 | Contemporary Amperex Technology Co., Limited | Battery module |
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Address after: 352100 Jiaocheng District of Ningde City, Fujian Province Zhang Wan Zhen Xingang Road No. 1 Applicant after: Contemporary Amperex Technology Co.,Ltd. Address before: 352100 Jiaocheng District of Ningde City, Fujian Province Zhang Wan Zhen Xingang Road No. 1 West Building 1F- research Applicant before: CONTEMPORARY AMPEREX TECHNOLOGY Ltd. |
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Application publication date: 20160203 |