CN205723735U - Polar column for secondary battery attachment structure - Google Patents
Polar column for secondary battery attachment structure Download PDFInfo
- Publication number
- CN205723735U CN205723735U CN201620616403.3U CN201620616403U CN205723735U CN 205723735 U CN205723735 U CN 205723735U CN 201620616403 U CN201620616403 U CN 201620616403U CN 205723735 U CN205723735 U CN 205723735U
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- Prior art keywords
- secondary battery
- bus
- bar
- polar column
- sheet
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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
Abstract
This utility model provides a kind of polar column for secondary battery attachment structure, and it includes the connection sheet of polar column for secondary battery, bus-bar and battery core main body；Polar column for secondary battery include the outer end joint face for electrically connecting with bus-bar and for be connected sheet electrical connection inner joint face；At least one in the outer end joint face of described polar column for secondary battery and inner joint face is provided with accepting groove；Bus-bar embeds in corresponding accepting groove with at least one connected in sheet, and is welded to connect with polar column for secondary battery.Compared with prior art, this utility model polar column for secondary battery attachment structure has the advantages such as welding quality is high, space availability ratio is high, the cost of material is low.
Description
Technical field
This utility model belongs to secondary cell and assembles field, particularly relates to a kind of polar column for secondary battery attachment structure.
Background technology
Polar column for secondary battery is the outfan of secondary cell, it is inner load battery packages shell internal and with battery core main body
Connecting sheet to connect, outer end is then stretched out battery packages shell outside and is connected with bus-bar or other exterior electrical components.
Referring to Fig. 1, the interior outer end joint face of existing polar column for secondary battery 10 is plane, the connection sheet of battery core main body
12, the position being used on bus-bar 14 being connected with polar column for secondary battery 10 is the most all plane, and two link positions are all first will be even
Contact pin 12, bus-bar 14 carry out face with the joint face of polar column for secondary battery 10 and contact, and are then welded by laser fuU penetration welding,
Formed and penetrate connection sheet 12, the weld seam 16 of bus-bar 14, could realize connecting.
But, above-mentioned connected mode at least there is problems in that
First, need connection sheet 12 and the bus-bar 14 of through welding battery core main body during welding, could realize and secondary battery pole
The connection of post 10, not only needs to use the high high power laser of investment, and penetrates that to be welded to connect area little, and welding quality is relatively
Difference；
Second, bus-bar 14, polar column for secondary battery 10, connection sheet 12 superposition in a thickness direction of battery core main body, cause
The space availability ratio of secondary cell is low, is unfavorable for the exploitation of high-energy density secondary battery；
3rd, bus-bar 14, polar column for secondary battery 10, battery core main body the weight connecting sheet 12 the biggest, material cost
High.
In view of this, a kind of polar column for secondary battery attachment structure that can solve the problem that above-mentioned technical problem of necessary offer.
Utility model content
The purpose of this utility model is: provide a kind of low cost, take up room the little and secondary battery pole of stable connection
Post attachment structure.
To achieve these goals, this utility model provides a kind of polar column for secondary battery attachment structure, and it includes secondary
The connection sheet of battery electrode column, bus-bar and battery core main body；Polar column for secondary battery includes that the outer end for electrically connecting with bus-bar is even
Junction and for and is connected sheet electrically connect inner joint face；The outer end joint face of described polar column for secondary battery and inner joint face
In at least one be provided with accepting groove；Bus-bar embeds in corresponding accepting groove with at least one connected in sheet, and and secondary
Battery electrode column is welded to connect.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the outer end of described polar column for secondary battery is even
Junction is provided with bus-bar accepting groove, and the width of bus-bar accepting groove and height all correspondingly-sized with bus-bar match.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, described bus-bar accepting groove is provided with remittance
Stream row's contiguous block, bus-bar correspondence bus-bar contiguous block is provided with link slot, the Dimension of connecting channel of bus-bar and bus-bar contiguous block
Correspondingly-sized match.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the upper surface of described bus-bar contiguous block
Concordant with the outer end joint face of polar column for secondary battery, the link slot of bus-bar penetrates bus-bar in short transverse.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the thickness of described bus-bar contiguous block is little
In the degree of depth of bus-bar accepting groove, the link slot of bus-bar does not penetrates through bus-bar in short transverse.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the inner of described polar column for secondary battery connects
Junction is provided with connection sheet accepting groove, and the width and the height that connect sheet accepting groove all match with the correspondingly-sized being connected sheet.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the company of being provided with in described connection sheet accepting groove
Contact pin contiguous block, connects sheet correspondence and connects sheet contiguous block and be provided with link slot, connects the Dimension of connecting channel of sheet and is connected sheet contiguous block
Correspondingly-sized match.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the lower surface of described connection sheet contiguous block
Concordant with the inner joint face of polar column for secondary battery, the link slot connecting sheet penetrates connection sheet in short transverse.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the thickness of described connection sheet contiguous block is little
In the degree of depth of connection sheet accepting groove, the link slot connecting sheet does not penetrates through connection sheet in short transverse.
As a kind of improvement of this utility model polar column for secondary battery attachment structure, the welding edge of described accepting groove is along using
It is beneficial to " V " type chamfering structure of welding.
Compared with prior art, this utility model polar column for secondary battery attachment structure has welding quality height, space utilization
The advantages such as rate is high, the cost of material is low.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and detailed description of the invention, to this utility model polar column for secondary battery attachment structure and useful skill thereof
Art effect is described in detail.
Fig. 1 is the connection diagram of existing polar column for secondary battery attachment structure.
Fig. 2 is the decomposing schematic representation of this utility model polar column for secondary battery attachment structure the first embodiment.
Fig. 3 is the connection diagram of this utility model polar column for secondary battery attachment structure the first embodiment.
Fig. 4 is the perspective view of the top half of polar column for secondary battery attachment structure in Fig. 3.
Fig. 5 is the decomposing schematic representation of this utility model polar column for secondary battery attachment structure the second embodiment.
Fig. 6 is the connection diagram of this utility model polar column for secondary battery attachment structure the second embodiment.
Fig. 7 is the decomposing schematic representation of this utility model polar column for secondary battery attachment structure the 3rd embodiment.
Fig. 8 is the connection diagram of this utility model polar column for secondary battery attachment structure the 3rd embodiment.
Fig. 9 is the decomposing schematic representation of this utility model polar column for secondary battery attachment structure the 4th embodiment.
Figure 10 is the connection diagram of this utility model polar column for secondary battery attachment structure the 4th embodiment.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and Advantageous Effects become apparent from understanding, below in conjunction with attached
Figure and detailed description of the invention, be further elaborated to this utility model.It should be appreciated that described in this specification
Detailed description of the invention is only used to explain this utility model, is not intended to limit this utility model.
Referring to Fig. 2 to Fig. 4, this utility model polar column for secondary battery attachment structure the first embodiment includes secondary cell
The connection sheet 40 of pole 20, bus-bar 30 and battery core main body.
Polar column for secondary battery 20 include the outer end joint face 22 for electrically connecting with bus-bar 30 and for be connected sheet 40
The inner joint face 24 of electrical connection.Outer end joint face 22 is provided with bus-bar accepting groove 220, the width of bus-bar accepting groove 220 and
The most all correspondingly-sized with bus-bar 30 match；Inner joint face 24 is provided with connection sheet accepting groove 240, connects sheet accepting groove
The width of 240 and height all match with the correspondingly-sized being connected sheet 40.
During connection, the connection sheet 40 of battery core main body is embedded in the connection sheet accepting groove 240 of polar column for secondary battery 20, to even
Contact pin 40 carries out butt welding with the seam crossing of inner joint face 24, can complete polar column for secondary battery 20 and be connected sheet 40 be electrically connected
Connect；In like manner, bus-bar 30 is embedded in the bus-bar accepting groove 220 of polar column for secondary battery 20, bus-bar 30 is connected with outer end
The seam crossing in face 22 carries out butt welding, can complete the electrical connection of polar column for secondary battery 20 and bus-bar 30.
Compared with prior art, above-mentioned polar column for secondary battery attachment structure has the advantage that
1) only need to form weld seam 60 at the seam crossing of two elements can realize connecting, bond pattern becomes from penetrating weldering
Butt welding, not only without using high power laser, and the connection area of weld seam 60 is big, and welding quality is high, secondary cell
Reliability is the highest；
2) during the connection sheet 40 of bus-bar 30 and battery core main body all embeds the corresponding accepting groove of polar column for secondary battery 20 so that
The thickness of whole polar column for secondary battery attachment structure is identical with the thickness of polar column for secondary battery 20, than existing superposition welding manner
At least reduce 2mm cell height, be therefore effectively increased the space availability ratio of secondary cell, beneficially high-energy density secondary
The exploitation of battery；
3) the bus-bar accepting groove 220 being originally positioned at polar column for secondary battery 20 and the material connected in sheet accepting groove 240, with
And the material connecting sheet 40 and bus-bar 30 marginal position of battery core main body is all removed, both reduces polar column for secondary battery and connected
The overall weight of structure, has saved again material cost.
Refer to Fig. 5 and Fig. 6, this utility model polar column for secondary battery attachment structure the second embodiment and the first embodiment party
Formula is essentially identical, differs only in: be provided with bus-bar contiguous block 222 in the bus-bar accepting groove 220 of polar column for secondary battery 20, converges
The upper surface of stream row's contiguous block 222 is concordant with outer end joint face 22；Bus-bar 30 is provided with and penetrates bus-bar 30 in short transverse
Link slot 32, the size of link slot 32 matches with the correspondingly-sized of bus-bar contiguous block 222.During connection, the company of bus-bar 30
Access slot 32 entangles the bus-bar contiguous block 222 of polar column for secondary battery 20 in the way of adaptive, and contact therebetween can increase
Conductive area between polar column for secondary battery 20 and bus-bar 30, reduces further and connects resistance.
Refer to Fig. 7 and Fig. 8, this utility model polar column for secondary battery attachment structure the 3rd embodiment and the first embodiment party
Formula is essentially identical, differs only in: be provided with connection sheet contiguous block 242 in the connection sheet accepting groove 240 of polar column for secondary battery 20, even
The lower surface of contact pin contiguous block 242 is concordant with inner joint face 24；The connection sheet 40 of battery core main body is provided with and penetrates in short transverse
Connecting the link slot 42 of sheet 40, the size of link slot 42 matches with the correspondingly-sized being connected sheet contiguous block 242.During connection, even
The link slot 42 of contact pin 40 entangles the connection sheet contiguous block 242 of polar column for secondary battery 20 in the way of adaptive, connecing therebetween
Touch and can increase polar column for secondary battery 20 and the conductive area being connected sheet between 40, reduce further and connect resistance.
Referring to Fig. 9 and Figure 10, this utility model polar column for secondary battery attachment structure the 4th embodiment and first is implemented
Mode is essentially identical, and difference is: be provided with bus-bar contiguous block 222 in the bus-bar accepting groove 220 of polar column for secondary battery 20, and
Connect and sheet accepting groove 240 is provided with connection sheet contiguous block 242；Accordingly, bus-bar 30 and connection sheet 40 are each provided with link slot
32、42.Due to bus-bar contiguous block 222, connect sheet contiguous block 242 and link slot 32,42 all with the second embodiment, the 3rd
The counter structure of embodiment is identical, and here is omitted.
It can be readily appreciated that in the second, the 4th embodiment, the thickness of bus-bar contiguous block 222 might be less that remittance
Stream row's degree of depth of accepting groove 220 and not concordant with outer end joint face 22, if corresponding link slot 32 degree of depth reducing bus-bar 30
It is made not penetrate through bus-bar 30, but corresponding with the thickness of bus-bar contiguous block 222, such structure can be further
Increase the contact area of polar column for secondary battery 20 and bus-bar 30, reduce and connect resistance.In like manner, at the three, the 4th embodiments
In, connect the thickness of sheet contiguous block 242 and might be less that and connect the degree of depth of sheet accepting groove 240 and not flat with inner joint face 24
Together, as long as corresponding reduction connects link slot 42 degree of depth of sheet 40 and makes it not penetrate through connection sheet 40, but be connected sheet contiguous block 242
Thickness correspondence, such structure can further increase polar column for secondary battery 20 be connected sheet 40 contact area,
Reduce and connect resistance.
Being equally easy to be understood by, in any embodiment, bus-bar accepting groove 220 and connection sheet accepting groove 240 exist
Can be processed into annular, rectangle, trapezoidal etc. variously-shaped on in-plane, welding edge beneficially welds along then can using
" V " type chamfering structure.
It should be noted that in other interchangeable embodiments, in the connection sheet 40 of bus-bar 30 and battery core main body
Can only have an embedded connected mode using above-mentioned first to fourth embodiment to provide, another the most still uses existing
Plane contact after penetrate weldering connected mode, although such structure beneficial effect can halve, but not can not implement.
According to above-mentioned principle, this utility model can also carry out suitable change and amendment to above-mentioned embodiment.Therefore,
This utility model is not limited to detailed description of the invention disclosed and described above, to modifications and changes more of the present utility model
Should also be as falling in scope of the claims of the present utility model.Although additionally, it is specific to employ some in this specification
Term, but these terms are merely for convenience of description, this utility model do not constituted any restriction.
Claims (10)
1. a polar column for secondary battery attachment structure, including the connection sheet of polar column for secondary battery, bus-bar and battery core main body；Secondary
Battery electrode column include the outer end joint face for electrically connecting with bus-bar and for be connected sheet electrical connection inner joint face；Its
It is characterised by: at least one in the outer end joint face of described polar column for secondary battery and inner joint face is provided with accepting groove；Conflux
Arrange and embed in corresponding accepting groove with at least one connected in sheet, and be welded to connect with polar column for secondary battery.
Polar column for secondary battery attachment structure the most according to claim 1, it is characterised in that: outside described polar column for secondary battery
End joint face is provided with bus-bar accepting groove, and the width of bus-bar accepting groove and height all correspondingly-sized with bus-bar match.
Polar column for secondary battery attachment structure the most according to claim 2, it is characterised in that: described bus-bar accepting groove sets
Having bus-bar contiguous block, bus-bar correspondence bus-bar contiguous block to be provided with link slot, the Dimension of connecting channel of bus-bar is with bus-bar even
The correspondingly-sized connecing block matches.
Polar column for secondary battery attachment structure the most according to claim 3, it is characterised in that: described bus-bar contiguous block upper
End face is concordant with the outer end joint face of polar column for secondary battery, and the link slot of bus-bar penetrates bus-bar in short transverse.
Polar column for secondary battery attachment structure the most according to claim 3, it is characterised in that: the thickness of described bus-bar contiguous block
Degree is less than the degree of depth of bus-bar accepting groove, and the link slot of bus-bar does not penetrates through bus-bar in short transverse.
Polar column for secondary battery attachment structure the most according to any one of claim 1 to 5, it is characterised in that: described secondary
The inner joint face of battery electrode column is provided with connection sheet accepting groove, and the width and the height that connect sheet accepting groove are all corresponding with connect sheet
Size matches.
Polar column for secondary battery attachment structure the most according to claim 6, it is characterised in that: described connection sheet accepting groove sets
Having connection sheet contiguous block, connect sheet correspondence connection sheet contiguous block and be provided with link slot, the Dimension of connecting channel connecting sheet connects with being connected sheet
The correspondingly-sized connecing block matches.
Polar column for secondary battery attachment structure the most according to claim 7, it is characterised in that: under described connection sheet contiguous block
End face is concordant with the inner joint face of polar column for secondary battery, and the link slot connecting sheet penetrates connection sheet in short transverse.
Polar column for secondary battery attachment structure the most according to claim 7, it is characterised in that: the thickness of described connection sheet contiguous block
Degree does not penetrates through connection sheet less than the degree of depth of connection sheet accepting groove, the link slot connecting sheet in short transverse.
Polar column for secondary battery attachment structure the most according to claim 1, it is characterised in that: the welding edge of described accepting groove
Along using " V " the type chamfering structure being beneficial to welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620616403.3U CN205723735U (en) | 2016-06-21 | 2016-06-21 | Polar column for secondary battery attachment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620616403.3U CN205723735U (en) | 2016-06-21 | 2016-06-21 | Polar column for secondary battery attachment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205723735U true CN205723735U (en) | 2016-11-23 |
Family
ID=57316472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620616403.3U Active CN205723735U (en) | 2016-06-21 | 2016-06-21 | Polar column for secondary battery attachment structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN205723735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048072A (en) * | 2019-05-15 | 2019-07-23 | 广东世力科技有限公司 | A kind of preparation process and compound electric pole of compound electric pole |
| WO2019148615A1 (en) * | 2018-01-31 | 2019-08-08 | 宁德时代新能源科技股份有限公司 | Battery module |
-
2016
- 2016-06-21 CN CN201620616403.3U patent/CN205723735U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148615A1 (en) * | 2018-01-31 | 2019-08-08 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN110048072A (en) * | 2019-05-15 | 2019-07-23 | 广东世力科技有限公司 | A kind of preparation process and compound electric pole of compound electric pole |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |