CN207353371U - A kind of flexible connection structure for secondary cell - Google Patents
A kind of flexible connection structure for secondary cell Download PDFInfo
- Publication number
- CN207353371U CN207353371U CN201720830682.8U CN201720830682U CN207353371U CN 207353371 U CN207353371 U CN 207353371U CN 201720830682 U CN201720830682 U CN 201720830682U CN 207353371 U CN207353371 U CN 207353371U
- Authority
- CN
- China
- Prior art keywords
- connecting portion
- connection sheet
- core
- secondary cell
- copper
- 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
Abstract
It the utility model is related to a kind of flexible connection structure for secondary cell.Including the copper connection sheet being connected with core negative electrode lug and the aluminium connection sheet being connected with core anode ear, the copper connection sheet and aluminium connection sheet difference laser welding are on the cover board.As shown from the above technical solution, the utility model is connected welding with core negative electrode lug and core anode ear respectively by copper connection sheet and aluminium connection sheet, core after welding is by the way of bending is separated, in the case of the identical lug number of plies, the bending of lug can be made highly to reduce, so as to reduce the bending space of battery, the capacity density of battery is improved.
Description
Technical field
It the utility model is related to power battery field, and in particular to a kind of flexible connection structure for secondary cell.
Background technology
Under the guiding of national relevant policies, electric automobile has gone on the road of rapid development, is particularly for secondary cell
The development of power battery creates opportunity, but it is also proposed the requirement of higher at the same time；In existing market is continued a journey for electric automobile
The requirement of journey is higher and higher, and possessing the secondary cell of high-energy-density has unlimited wide market.
For the appearance and size of secondary cell, country has all formulated relevant standard.In the feelings that battery form factor is constant
Under condition, the capacity of battery and corresponding energy density are lifted, the design of structural member is particularly important.
Existing copper aluminium connection sheet uses the unilateral form dehisced, and after 2 or multiple core are merged, it is just
Negative lug is ultrasonically welded together with copper aluminium connection sheet again, and after multiple core merge together, lug number of plies increase, thickness increases
Add, bending height higher；In the case of battery form factor does not become, the inner space of battery is substantially reduced so that battery
Capacity can not be lifted.
Utility model content
The purpose of this utility model is to provide a kind of flexible connection structure for secondary cell, which can be outside battery
In the case of shape size constancy, inside battery space is effectively saved, lifts the energy density of battery.
To achieve the above object, the utility model employs following technical scheme：Including the copper being connected with core negative electrode lug
Connection sheet and the aluminium connection sheet being connected with core anode ear, the copper connection sheet and aluminium connection sheet are distinguished laser welding and are being covered
On plate, the copper connection sheet includes the first connecting portion being connected with cover board and the second connecting portion being connected with core negative electrode lug
And the 3rd connecting portion, the second connecting portion and the 3rd connecting portion are symmetricly set on the both ends of first connecting portion, and second connects
The bending line easy to second connecting portion and the 3rd connecting portion bending is equipped between socket part, the 3rd connecting portion and first connecting portion.
The link position of the second connecting portion, the 3rd connecting portion and first connecting portion is additionally provided with easy to the second connection
Portion, the notch of the 3rd connecting portion bending, the notch are arranged on the both ends of bending line.
The copper connection sheet arranges that the first connecting portion of two layers of bronze medal connection sheet is welded by ultrasonic bond two layers in above-below direction
It is connected together.
The first connecting portion of the copper connection sheet is welded on the negative terminal of cover board by Laser Welding.
Formed respectively between the second connecting portion of two layers of the bronze medal connection sheet and the 3rd connecting portion and accommodate core negative electrode lug
Dehisce, and the second connecting portion of two layers of bronze medal connection sheet, the 3rd connecting portion are welded on one with core negative electrode lug by ultrasonic bond respectively
Rise.
As shown from the above technical solution, the utility model by copper connection sheet and aluminium connection sheet respectively with core negative electrode lug and
Core anode ear is connected welding, and the core after welding, in the case where the lug number of plies is identical, makes pole by the way of bending is separated
The bending of ear highly reduces, so as to reduce the bending space of battery, improves the capacity density of battery.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of copper connection sheet；
Fig. 3 is the structure diagram after two layers of bronze medal connection sheet connection；
Fig. 4 is the usage state diagram of the utility model.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
A kind of flexible connection structure for secondary cell as shown in Figure 1, including the copper being connected with core negative electrode lug 20 connect
Contact pin 1 and the aluminium connection sheet 2 being connected with core anode ear 30, copper connection sheet 1 and aluminium connection sheet 2 distinguish laser welding in cover board
On 10.
The shape of copper connection sheet 1 and aluminium connection sheet 2, structure are identical, are only material differences, below with copper connection sheet 1
Exemplified by illustrate：
Further, as shown in Fig. 2, copper connection sheet 1 includes the first connecting portion 11 and and core being connected with cover board 10
12 and the 3rd connecting portion 13 of second connecting portion that negative electrode lug is connected, second connecting portion 12 and the 3rd connecting portion 13 are symmetricly set on
The both ends of one connecting portion 11, and be equipped between second connecting portion 12, the 3rd connecting portion 13 and first connecting portion 11 and connect easy to second
The bending line 14 of 13 bending of socket part 12 and the 3rd connecting portion.Further, second connecting portion 12, the 3rd connecting portion 13 and first
The link position of connecting portion 11 is additionally provided with to be set easy to the notch 15 of second connecting portion 12,13 bending of the 3rd connecting portion, notch 15
At the both ends of bending line 14.
Further, the first connecting portion 11 of copper connection sheet 1 is welded on the negative terminal of cover board by Laser Welding.
Further, as shown in figure 3, copper connection sheet 1 is arranged two layers in above-below direction, the first of two layers of bronze medal connection sheet 1 connects
Socket part 11 is welded together by ultrasonic bond.Between 12 and the 3rd connecting portion 13 of second connecting portion of two layers of bronze medal connection sheet 1 respectively
Formed and accommodate dehiscing for core negative electrode lug 20, and the second connecting portion 12 of two layers of bronze medal connection sheet 1, the 3rd connecting portion 13 respectively with volume
Core negative electrode lug 20 is welded together by ultrasonic bond.
During assembling, as shown in figure 3, first weld together upper and lower two layers of bronze medal connection sheet 1 by ultrasonic bond, as shown in Figure 1,
Two layers of bronze medal connection sheet of postwelding is welded on cover board 10 by Laser Welding again, the welding position of upper and lower two layers of bronze medal connection sheet 1 is
First connecting portion 11, the welding position between copper connection sheet 1 and cover board 10 are also first connecting portion 11.After being welded, such as Fig. 4
It is shown, dehisce to locate by core negative electrode lug 20 is individually positioned in second connecting portion 12, the 3rd connecting portion 13 is formed, and pass through ultrasound
Weldering rolls over core negative electrode lug after welding by core negative pole lug welding to 12 and the 3rd connecting portion 13 of second connecting portion
It is curved.The assembling of aluminium connection sheet 2 is identical with copper connection sheet 1, and details are not described herein.
In conclusion the utility model is by the way of core separates bending, in the case where the lug number of plies is identical so that
The bending of lug highly reduces, so as to reduce the bending space of battery, in the case where battery form factor is constant, can increase
Core height, so as to achieve the purpose that to improve battery capacity.Meanwhile the structure also reduces the dosage of copper, aluminium foil, substantially reduces
The material cost of company, alleviates battery weight, further improves battery energy density.The flexible connection structure, can be still
So using the battery component for having developed maturation, during battery makes, it is only necessary to debug set related to what is be flexible coupling
It is standby, it is not necessary to be purchased again, commissioning device because of exploitation high capacity cell, further greatly reduce enterprise's battery and make production
The cost of industry.
Embodiment described above is only that the preferred embodiment of the utility model is described, not to this practicality
New scope is defined, and on the premise of the spirit of the design of the utility model is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical solution of utility model is made, should all fall into the protection that the utility model claims book determines
In the range of.
Claims (5)
- A kind of 1. flexible connection structure for secondary cell, it is characterised in that：Including the copper connection sheet being connected with core negative electrode lug （1）And the aluminium connection sheet being connected with core anode ear（2）, the copper connection sheet（1）And aluminium connection sheet（2）Laser Welding respectively It is connected on cover board（10）On, the copper connection sheet（1）Including with cover board（10）Connected first connecting portion（11）And and core The second connecting portion that negative electrode lug is connected（12）And the 3rd connecting portion（13）, the second connecting portion（12）And the 3rd connecting portion （13）It is symmetricly set on first connecting portion（11）Both ends, and second connecting portion（12）, the 3rd connecting portion（13）It is connected with first Portion（11）Between be equipped be easy to second connecting portion（12）And the 3rd connecting portion（13）The bending line of bending（14）.
- 2. the flexible connection structure according to claim 1 for secondary cell, it is characterised in that：The second connecting portion （12）, the 3rd connecting portion（13）With first connecting portion（11）Link position be additionally provided with easy to second connecting portion（12）, the 3rd connect Socket part（13）The notch of bending（15）, the notch（15）It is arranged on bending line（14）Both ends.
- 3. the flexible connection structure according to claim 1 for secondary cell, it is characterised in that：The copper connection sheet （1）Arranged two layers in above-below direction, two layers of bronze medal connection sheet（1）First connecting portion（11）Welded together by ultrasonic bond.
- 4. the flexible connection structure according to claim 1 for secondary cell, it is characterised in that：The copper connection sheet（1） First connecting portion（11）It is welded on by Laser Welding on the negative terminal of cover board.
- 5. the flexible connection structure according to claim 3 for secondary cell, it is characterised in that：Two layers of the bronze medal connection sheet （1）Second connecting portion（12）And the 3rd connecting portion（13）Between formed respectively and accommodate core negative electrode lug and dehisce, and two layers bronze medal Connection sheet（1）Second connecting portion（12）, the 3rd connecting portion（13）Welded together respectively with core negative electrode lug by ultrasonic bond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830682.8U CN207353371U (en) | 2017-07-10 | 2017-07-10 | A kind of flexible connection structure for secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830682.8U CN207353371U (en) | 2017-07-10 | 2017-07-10 | A kind of flexible connection structure for secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353371U true CN207353371U (en) | 2018-05-11 |
Family
ID=62360152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720830682.8U Active CN207353371U (en) | 2017-07-10 | 2017-07-10 | A kind of flexible connection structure for secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207353371U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004236A (en) * | 2018-07-17 | 2018-12-14 | 江苏海基新能源股份有限公司 | A kind of full tab wound lithium-ion battery current collector structure and processing method |
| CN109148938A (en) * | 2018-08-17 | 2019-01-04 | 湖北金泉新材料有限责任公司 | A kind of welding method and battery of battery |
| CN109244348A (en) * | 2018-09-14 | 2019-01-18 | 湖北金泉新材料有限责任公司 | A kind of battery assembly technology and assembly device |
| CN109698309A (en) * | 2018-12-28 | 2019-04-30 | 蜂巢能源科技有限公司 | Lithium ion battery, vehicle, lithium ion battery assemble method |
| CN110120488A (en) * | 2019-06-03 | 2019-08-13 | 江西安驰新能源科技有限公司 | A kind of multi-winding-core power battery |
| CN110444723A (en) * | 2019-08-30 | 2019-11-12 | 蜂巢能源科技有限公司 | Battery connecting apparatus and battery |
| CN111463496A (en) * | 2020-04-15 | 2020-07-28 | 江西赣锋电池科技有限公司 | Laminated lithium battery and assembling method thereof |
| CN111668554A (en) * | 2020-06-18 | 2020-09-15 | 苏州凌威新能源科技有限公司 | Battery cell, assembling method thereof and connecting sheet |
| CN113782920A (en) * | 2021-08-02 | 2021-12-10 | 力神动力电池系统有限公司 | Four-pole assembling structure of battery |
| WO2023061783A1 (en) * | 2021-10-15 | 2023-04-20 | Trumpf Laser- Und Systemtechnik Gmbh | Method for laser welding a workpiece, the method switching quickly between welding zones having different materials to be welded |
-
2017
- 2017-07-10 CN CN201720830682.8U patent/CN207353371U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004236A (en) * | 2018-07-17 | 2018-12-14 | 江苏海基新能源股份有限公司 | A kind of full tab wound lithium-ion battery current collector structure and processing method |
| CN109004236B (en) * | 2018-07-17 | 2023-05-30 | 江苏海基新能源股份有限公司 | Processing method of full-lug winding lithium ion battery current collector structure |
| CN109148938B (en) * | 2018-08-17 | 2020-12-22 | 湖北亿纬动力有限公司 | Battery welding method and battery |
| CN109148938A (en) * | 2018-08-17 | 2019-01-04 | 湖北金泉新材料有限责任公司 | A kind of welding method and battery of battery |
| CN109244348A (en) * | 2018-09-14 | 2019-01-18 | 湖北金泉新材料有限责任公司 | A kind of battery assembly technology and assembly device |
| CN109244348B (en) * | 2018-09-14 | 2021-11-23 | 湖北亿纬动力有限公司 | Battery assembly process and assembly device |
| CN109698309A (en) * | 2018-12-28 | 2019-04-30 | 蜂巢能源科技有限公司 | Lithium ion battery, vehicle, lithium ion battery assemble method |
| CN110120488A (en) * | 2019-06-03 | 2019-08-13 | 江西安驰新能源科技有限公司 | A kind of multi-winding-core power battery |
| CN110444723A (en) * | 2019-08-30 | 2019-11-12 | 蜂巢能源科技有限公司 | Battery connecting apparatus and battery |
| CN111463496A (en) * | 2020-04-15 | 2020-07-28 | 江西赣锋电池科技有限公司 | Laminated lithium battery and assembling method thereof |
| CN111463496B (en) * | 2020-04-15 | 2022-07-05 | 江西赣锋电池科技有限公司 | Laminated lithium battery and assembling method thereof |
| CN111668554A (en) * | 2020-06-18 | 2020-09-15 | 苏州凌威新能源科技有限公司 | Battery cell, assembling method thereof and connecting sheet |
| CN113782920A (en) * | 2021-08-02 | 2021-12-10 | 力神动力电池系统有限公司 | Four-pole assembling structure of battery |
| WO2023061783A1 (en) * | 2021-10-15 | 2023-04-20 | Trumpf Laser- Und Systemtechnik Gmbh | Method for laser welding a workpiece, the method switching quickly between welding zones having different materials to be welded |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207353371U (en) | A kind of flexible connection structure for secondary cell | |
| CN106972144B (en) | Secondary battery | |
| CN204834764U (en) | Cylindrical high magnification lithium ion battery of edge weld | |
| CN206076349U (en) | Electric connecting sheet and battery modules | |
| CN209418631U (en) | A kind of power battery and electric car | |
| CN203406360U (en) | Cover plate structure for square aluminium-shell lithium ion battery | |
| CN208923266U (en) | Cell connector, battery and vehicle | |
| CN114824675A (en) | Battery cell switching piece and welding method thereof | |
| CN106207069A (en) | A kind of a kind of method that battery and polymer soft electric core are connected in parallel | |
| CN102945929B (en) | Multi-pole-set battery and manufacture method thereof | |
| CN205303608U (en) | Battery electricity core | |
| CN102683755A (en) | Novel high-voltage lithium-ion power battery | |
| CN103219524B (en) | A kind of laminated lithium ion battery plus plate current-collecting body paillon foil, anode pole piece and battery | |
| CN207818809U (en) | Battery and the battery pack with it, electric vehicle | |
| CN102489857A (en) | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap | |
| CN205882054U (en) | Secondary battery | |
| CN218867347U (en) | Battery cell pole group and battery cell | |
| CN104091912B (en) | Extremely pole ear welding method of a kind of lithium battery with multi pole ears volume core | |
| CN204577672U (en) | For the attachment plug of mobile terminal | |
| CN204204977U (en) | Li-ion batteries piles | |
| CN209016172U (en) | A kind of lithium ion battery and battery pack | |
| CN209071489U (en) | A kind of lithium battery connector | |
| CN208368597U (en) | Gasket is used in a kind of weldering of lithium ion battery butterfly | |
| CN213601983U (en) | Power battery cover plate flexible connection structure | |
| CN201478402U (en) | Lithium series secondary battery roll core and lithium series secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |