CN105914334B - A kind of lug attachment device, power battery and automobile - Google Patents
A kind of lug attachment device, power battery and automobile Download PDFInfo
- Publication number
- CN105914334B CN105914334B CN201510492775.XA CN201510492775A CN105914334B CN 105914334 B CN105914334 B CN 105914334B CN 201510492775 A CN201510492775 A CN 201510492775A CN 105914334 B CN105914334 B CN 105914334B
- Authority
- CN
- China
- Prior art keywords
- lug
- busbar
- rivet
- spring bearer
- bearer plate
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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 invention discloses a kind of lug attachment device, use the automobile of the power battery and use of the lug attachment device power battery.The present invention provides enough lasting pressing forces by the elastic deformation of spring bearer plate between lug and busbar, and can realize fast and reliable connection.
Description
Technical field
The present invention relates to power battery technology field, more particularly to a kind of lug attachment device, a kind of power battery and make
With the automobile of the power battery.
Background technology
In electric vehicle field, mainly there are two major classes in power battery lug connection method：
The first is welding method：Including laser welding, ultrasonic bonding, a variety of welding methods such as electric resistance welding.
Second is mechanical joining methods：Including the connection side of structures non-solder form such as be bolted, crimp and rivet
Method.
In the concrete application in current electric vehicle engineering field, power battery lug connects based on welding form, main
Want the reason is that：Welding structure form is relatively easy, Automation of Welding production can be achieved after dispensing device, and weld inflow-rate of water turbine
Greatly, relative resistance is smaller.
But there is also many problems for tab welding.First, tab welding needs equipment investment, and needs to make a large amount of
Tooling fixture；It is not very economical in product exemplar stage and small lot production phase.Second, belong to irreversible after welding
Welding, it is not removable after welding, therefore after lithium battery group comes into operation, even if finding some lithium cell therein, there are performances
Difference or it is unable to normal use, problem lithium cell can not also be replaced, can only be allowed to influence other lithiums electricity in battery pack
The normal use of core, until entire battery pack is caused to be scrapped, this can undoubtedly cause the waste of resource, at the same also increase use at
This.
Another kind of power battery electrode ear mechanical joining methods are mainly bolted, and pole is connected by using bolt and nut
The method of ear and busbar is widely adopted in exemplar stage and welding procedure jejune stage.But it is more to be bolted needs
Operation working hour, and it is larger in the case that assembling undesirable internal resistance.
This mechanical connection form is riveted, because without equipment investment requirement, and riveting process is quick, simply；After riveting
Connection is reliable, therefore is widely used in mechanical industry field, but in power battery lug connection but seldom application.It is main
Want the reason is that：Although riveting has good static mechanical switching performance, but in onboard system, Long-term Vibration can draw
Rivet stress relaxation is played, rivet is thereby reduced and acts on busbar and the normal pressure on lug, and then between rivet and busbar
It contacts internal resistance to increase, finally affects the safety of electrical connection.Therefore, riveting structure can not be provided to lug and busbar foot
Enough lasting pressing forces are to limit the main reason for it is applied in power battery lug connection area.
Invention content
In view of this, the object of the present invention is to provide a kind of lug attachment device using riveting mode, pass through
The elastic deformation of spring bearer plate provides enough lasting pressing forces between lug and busbar, and can realize fast and reliable company
It connects.
The embodiment provides a kind of lug attachment devices, including：
Busbar, the busbar are bonded with the lug of electrical core of power battery unit；
Rivet, the rivet is for connecting the busbar and the lug；With
Spring bearer plate, the spring bearer plate are bonded with the busbar；
Wherein, the lug, busbar and spring bearer plate are riveted together by the rivet successively, and make bullet in riveting
Property pressing plate generate the flexible deformation for squeezing the busbar and the lug, it is lasting between the busbar and the lug to generate
Pressing force.
In a kind of schematical embodiment of the embodiment of the present invention, the lug attachment device further comprises：
Support bracket, the Support bracket are bonded with the lug, and the busbar is located at the elasticity with the lug and presses
Between plate and the Support bracket,
The Support bracket, lug, busbar and spring bearer plate are riveted together by the rivet successively.
In a kind of schematical embodiment of the embodiment of the present invention, the both ends of the Support bracket have elastic card
The both ends of button, the Elastic buckle and the spring bearer plate fasten, and the busbar and the lug, which are limited to the elasticity, presses
Between plate and the Support bracket.
In a kind of schematical embodiment of the embodiment of the present invention, the spring bearer plate has elastic boss, described
Elastic boss has the rivet hole passed through for the rivet.
In a kind of schematical embodiment of the embodiment of the present invention, the elasticity boss faces away from the busbar
The root of direction protrusion, the elasticity boss is bonded the busbar.
In a kind of schematical embodiment of the embodiment of the present invention, the busbar and/or the lug surface have
Conductive coating.
An alternative embodiment of the invention additionally provides a kind of power battery, including：
Battery core unit, the battery core unit include battery core cell body and the lug that is stretched out from the battery core cell body；
And
Lug attachment device as described above.
Another embodiment of the present invention additionally provides a kind of automobile, and the automobile includes above-described power battery.
Description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the schematic diagram of the assembled state of the lug attachment device 10 of the present invention.
Fig. 2 is the exploded perspective view of the lug attachment device 10 of the present invention.
Fig. 3 is the structural schematic diagram of the Support bracket in the present invention.
Fig. 4 is the structural schematic diagram of the spring bearer plate in the present invention.
Fig. 5 is the structural schematic diagram of one embodiment of the power battery of the present invention.
Fig. 6 is the structural schematic diagram of another embodiment of the power battery of the present invention.
Label declaration：
10 lug attachment devices
11 rivets
12 busbars
121 first rivet holes
13 spring bearer plates
131 elastic boss
132 third rivet holes
14 Support brackets
141 Elastic buckles
142 the 4th rivet holes
20 power batteries
21 battery core units
211 battery core cell bodies
212 lugs
2121 second rivet holes
Specific implementation mode
In order to which the technical features, objects and effects to invention are more clearly understood, now control description of the drawings is of the invention
Specific implementation mode, in the various figures identical label indicate identical part.
Herein, " schematic " expression " serving as example, example or explanation " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical solution.
To make simplified form, part related to the present invention is only schematically shown in each figure, and does not represent it
Practical structures as product.In addition, so that simplified form is easy to understand, there is the portion of identical structure or function in some figures
Part only symbolically depicts one of those, or has only marked one of those.
In order to solve the technical issues of riveted structure can not provide enough lasting pressing forces in the prior art, the present invention carries
A kind of lug attachment device has been supplied, enough lasting pressures are provided by the elastic deformation of spring bearer plate between lug and busbar
Clamp force, and can realize fast and reliable connection.
Fig. 1 is the schematic diagram of the assembled state of the lug attachment device 10 of the present invention, and Fig. 2 is the lug connection dress of the present invention
Set 10 exploded perspective view.As depicted in figs. 1 and 2, in one embodiment, lug attachment device 10 includes：
Rivet 11 is used to connect the lug 212 of busbar 12 and electrical core of power battery unit；
Busbar 12 is bonded with lug 212, and to realize being electrically connected between lug 212 and busbar 12, busbar 12, which has, to be supplied
The first rivet hole 121 that rivet 11 passes through, lug 212 have the second rivet hole 2121 passed through for rivet 11；With
Spring bearer plate 13 is bonded with busbar 12, spring bearer plate 13 have for rivet 11 by third rivet hole 132.
Wherein, rivet 11 sequentially passes through the first riveting of the second rivet hole 2121, busbar 12 of lug 212 in riveting process
Lug 212, busbar 12 and spring bearer plate 13 are riveted on by the third rivet hole 132 of nail hole 121 and spring bearer plate 13 successively
Together, and riveting when by extrudings of spring bearer plate 13 make spring bearer plate 13 generate extruding busbar 12 and lug 212 bullet
Property deformation, the flexible deformation of spring bearer plate 13 generates pressing force lasting between busbar 12 and lug 212.
In this embodiment, rivet 11 is the spike part that there is cap in one end, in riveting process using self-deformation or
Interference connection links together the part being riveted, to limit shifting of the part being riveted on the axial direction along rivet 11
It is dynamic.In order to avoid rivet stress relaxation caused by due to vibrations etc., the present embodiment increases elastic pressure in riveted structure
Lug 212, busbar 12 and spring bearer plate 13 are not only riveted together by plate 13, rivet 11 in riveting process, also make elastic pressure
Plate 13 generates the elastic deformation for squeezing lug 212 and busbar 12, which can not only ensure lug 212 and busbar 12
It is in close contact, and by supplementing due to rivet stress relaxation issuable axial direction within the scope of its elastic deformation
Gap, to provide lasting pressing force as between lug 212 and busbar 12 during long-term use, to reduce conductive boundary
Surface resistance improves the ability by electric current.
The surface of lug 212 and/or busbar 12 can have conductive coating (not shown), which can be nickel
Layer, or conductive adhesive, effect makes the contact resistance between reduction busbar 12 and lug 212, in the axial direction of rivet 11
Compress the ability promoted under force effect through electric current.
The material of lug 212 can be sheet metal, sheet copper, can also be thin aluminum sheet, thickness is in 0.2mm-1mm ranges
It is interior.The material of busbar 12 can be sheet metal, sheet copper, can also be thin aluminum sheet, thickness is within the scope of 0.3mm-3mm.Elasticity
The material of pressing plate 13 generally selects highly elastic material, may include spring steel plate, can also include elastic hard plastics.
It is understood that in Fig. 1 and lug attachment device shown in Fig. 2, although the embodiment is to include a mother
The structure of 12, seven spring bearer plates 13 of row and 21 rivets 11 is shown, the lug 212 being connect with the busbar 12
Share 14.Wherein, each spring bearer plate 13 and corresponding three rivets 11 by two lugs 212 for one group and busbar
12 are fixedly connected.But the selection in the embodiment for quantity should not constitute the constraint to the embodiment, that is, spring bearer plate 13
Quantity can be selected as one or more, the corresponding number of each spring bearer plate 13 and lug 212 can be one or more,
With each spring bearer plate 13 rivet rivet 11 quantity can according to lug 212, busbar 12 and spring bearer plate 13 width,
Fixed position etc. is selected, and can be one or more, and the first rivet of the second rivet hole 2121 of lug 212, busbar 12
The quantity of the third rivet hole 132 of hole 121 and spring bearer plate 13 and position are corresponding with the quantity of rivet 11 and fixed position.
Since the effect of busbar 12 is that one or more lugs 212 link together, to realize the battery core of power battery
Unit in parallel or series, therefore under normal conditions, for a power battery or a battery modules, it is only necessary to be arranged
One to two busbar 12, but the case where be not excluded for multiple busbars 12.For example, for by multiple battery core lists of power battery
Member carries out situation in parallel, needs to link together the lug with identical polar of battery core unit, then for a power
For battery or a battery modules, needs a busbar for connecting all positive pole ears and connect the another of all negative lugs
A busbar.
Further, in order to support lug 212, busbar 12 and spring bearer plate 13, and protect lug 212, such as Fig. 1 and
Shown in Fig. 2, which further comprises：
Support bracket 14, Support bracket 14 are bonded with lug 212, and busbar 12 is located at spring bearer plate 13 and branch with lug 212
Between bracketing frame 14, there is Support bracket 14 the 4th rivet hole 142 passed through for rivet 11, rivet 11 to sequentially pass through Support bracket
14 the 4th rivet hole 142, the second rivet hole 2121 of lug 212, the first rivet hole 121 of busbar 12 and spring bearer plate 13
Third rivet hole 132, Support bracket 13, lug 212, busbar 12 and spring bearer plate 13 are riveted together successively.
Since Support bracket 14 is arranged between the cap and lug 212 of 11 one end of rivet, can be avoided in riveting process
Rivet cap is in direct contact with lug 212, to protect lug 212 not to be damaged in riveting.
It is understood that in Fig. 1 and lug attachment device shown in Fig. 2, although the embodiment is to include seven branch
The structure of bracketing frame 14 is shown, but the selection in the embodiment for quantity should not constitute the pact to the embodiment
Beam, that is, the quantity of Support bracket 14 can be corresponded with the quantity of spring bearer plate 13 and position, fewer than spring bearer plate 13
Quantity, the quantity for being fixed on the lug 212 between one group of Support bracket 14 and spring bearer plate 13 can be one or more.
14 surface of Support bracket has insulating coating, and insulating coating can be insulated paint, can also be insulating powder.
Preferably, in the schematical embodiment of lug attachment device, as shown in figure 3, the two of Support bracket 14
End has Elastic buckle 141, and in conjunction with shown in Fig. 1, the both ends of the Elastic buckle 141 and spring bearer plate 13 fasten, by busbar 12
It is limited between spring bearer plate 13 and Support bracket 14 with lug 212.
In this embodiment, Elastic buckle 141 has elasticity, and Support bracket 14 can be made to be pressed with elasticity in assembling process
Plate 13 fastens and clamping, thus in the outside of busbar 12 and lug 212 by busbar 12 and lug 212 in the form of similar to bandage
It is limited between spring bearer plate 13 and Support bracket 14, not only assembly method is simple and practicable, the riveting for rivet 11 of being also more convenient for.
The installation process of the lug attachment device of the present embodiment is as follows：
Lug 212 and the fitting of busbar 12 are placed first, spring bearer plate 13 and Support bracket 14 are being individually positioned in pole
The outside of ear 212 and busbar 12, wherein spring bearer plate 13 is bonded busbar 12, and Support bracket 14 is bonded lug 212.It then will branch
The Elastic buckle 141 at 14 both ends of bracketing frame is fastened with spring bearer plate 13, to which lug 212 and busbar 12 are bundled in Support bracket
Between 14 and spring bearer plate 13.Finally, make rivet 11 sequentially pass through the 4th rivet hole 142 of Support bracket 14, lug 212
Two rivet holes 2121, the first rivet hole 121 of busbar 12 and the third rivet hole 132 of spring bearer plate 13, by Support bracket
13, lug 212, busbar 12 and spring bearer plate 13 are riveted together successively.
Specifically, in order to realize the elastic deformation of spring bearer plate 13 in riveting process, as shown in figure 4, spring bearer plate 13
With one or more elastic boss 131, elastic boss 131 has the third rivet hole 132 passed through for rivet 11.
Rivet 11 passes through third rivet hole 132 in riveting process, and squeezes elastic boss 131 so that elastic boss 131
The elastic deformation that extruding lug 212 and busbar 12 occurs, to generate pressing force lasting between busbar 12 and lug 212.Elasticity
The elastic deformation of boss 131 can not only ensure the close contact of lug 212 and busbar 12, and by its elastic deformation model
Enclose it is interior supplement due to rivet stress relaxation the gap of issuable axial direction, using during long-term use as lug
Lasting pressing force is provided between 212 and busbar 12, to reduce thermal interface resistance, improves the ability by electric current.
Specifically, in order to enable elastic boss 131 occurs to squeeze the elastic deformation of lug 212 and busbar 12, such as Fig. 2 and 4
Shown, elastic boss 131 faces away from the direction protrusion of busbar 12, and the root of elastic boss 131 is bonded busbar 12.Then riveting
In the process, elastic boss 131 generates under the pressure effect of rivet 11 towards the elastic deformation on 12 direction of busbar, to pass through
The root of elastic boss 131 squeezes lug 212 and busbar 12.
It is understood that in Fig. 1, Fig. 2 and embodiment shown in Fig. 4, it is although elastic boss 131 is shown as side
The boss structure of trapezoidal shape, but it should not constitute the constraint to the embodiment, that is, elastic boss 131 can realize to be half
Circle, arc, rectangle etc. are a variety of can to generate elastically-deformable structure, squeezed as long as can be generated under the effect of the pressure of rivet 11
Press the elastic deformation of lug 212 and busbar 12.In addition, the quantity of elastic boss 131 and the quantity of position and rivet 11 and
Position corresponds to.
The height of elastic boss 131 is determined according to the requirement of the direct stress of rivet, can be set in 0.2mm-2mm ranges
It is interior.
As shown in figure 5, an alternative embodiment of the invention additionally provides a kind of power battery 20, including：
Battery core unit 21, battery core unit 21 include battery core cell body 211 and from battery core cell body 211 stretch out pole
Ear 212；And
Lug attachment device 10 described in embodiment as above.
It is understood that can have multiple battery core units 21 arranged side by side (in figure as shown in Figure 5 in power battery 20
It show seven), also can only have as shown in Figure 6 there are one battery core unit 21.Electricity there are one can only having in each battery core unit 21
Core, either there are two (or multiple) battery cores, then each battery core to stretch out a positive pole ear and one for tool as shown in Figure 5 and Figure 6
Negative lug.
In Fig. 5 and the present embodiment shown in fig. 6, the homopolarity for stretching out the side of ultromotivity battery 20 is illustrated only
Property the lug attachment device 10 that links together of lug, although the other side stretching for ultromotivity battery 20 is not shown in figure
Same polarity lug attachment device, it is not intended that the lug need not connect.In practical applications, power battery both sides
The lug of opposed polarity can be used identical attachment device and connection type, or use different attachment devices and connection side
Formula.
It in another embodiment, can be by the application of the power battery 20 in above-described embodiment in the car.Certainly, this is dynamic
How power battery 20 realizes that installation in the car is not the emphasis of the present invention, and those skilled in the art can be in any way
Implement the installation of power battery 20 in the car, repeats no more herein.
Herein, "one" is not offered as the quantity of relevant portion of the present invention being limited to " only this ", and " one
It is a " do not indicate that the situation of the quantity " more than one " for excluding relevant portion of the present invention.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate significance level and sequence and
Existing premise etc. each other.
Unless otherwise indicated, numberical range herein includes not only the entire scope in two endpoint, also includes containing
In several subranges therein.
The series of detailed descriptions listed above only for the present invention feasible embodiment specifically
It is bright, and not to limit the scope of the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of lug attachment device (10), which is characterized in that including：
Busbar (12), the busbar (12) are bonded with the lug (212) of power battery (20) battery core unit (21)；
Rivet (11), the rivet (11) is for connecting the busbar (12) and the lug (212)；With
Spring bearer plate (13), the spring bearer plate (13) are bonded with the busbar (12)；
Wherein, the lug (212), busbar (12) and spring bearer plate (13) are riveted together by the rivet (11) successively, and
Spring bearer plate (13) is set to generate the flexible deformation for squeezing the busbar (12) and the lug (212) in riveting, to generate
State pressing force lasting between busbar (12) and the lug (212).
2. lug attachment device (10) as described in claim 1, which is characterized in that the lug attachment device (10) is further
Including：
Support bracket (14), the Support bracket (14) are bonded with the lug (212), the busbar (12) and the lug
(212) between the spring bearer plate (13) and the Support bracket (14),
The rivet (11) rivets the Support bracket (14), lug (212), busbar (12) and spring bearer plate (13) successively
Together.
3. lug attachment device (10) as claimed in claim 2, which is characterized in that the both ends of the Support bracket (14) have
The both ends of Elastic buckle (141), the Elastic buckle (141) and the spring bearer plate (13) fasten, by the busbar (12) with
The lug (212) is limited between the spring bearer plate (13) and the Support bracket (14).
4. lug attachment device (10) as claimed in claim 2 or claim 3, which is characterized in that the spring bearer plate (13) has bullet
Property boss (131), the elasticity boss (131) has for the rivet (11) rivet hole (132) that passes through.
5. lug attachment device (10) as claimed in claim 4, which is characterized in that the elasticity boss (131) faces away from
The direction protrusion of the busbar (12), the root of the elasticity boss (131) are bonded the busbar (12).
6. lug attachment device (10) as claimed in claim 5, which is characterized in that the busbar (12) and/or the lug
(212) surface has conductive coating.
7. a kind of power battery (20), which is characterized in that including：
Battery core unit (21), the battery core unit (21) include battery core cell body (211) and from the battery core cell body
(211) lug (212) stretched out；And
Such as lug attachment device (10) according to any one of claims 1 to 6.
8. a kind of automobile, which is characterized in that the automobile includes power battery as claimed in claim 7 (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510492775.XA CN105914334B (en) | 2015-08-12 | 2015-08-12 | A kind of lug attachment device, power battery and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510492775.XA CN105914334B (en) | 2015-08-12 | 2015-08-12 | A kind of lug attachment device, power battery and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105914334A CN105914334A (en) | 2016-08-31 |
| CN105914334B true CN105914334B (en) | 2018-07-17 |
Family
ID=56743947
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510492775.XA Active CN105914334B (en) | 2015-08-12 | 2015-08-12 | A kind of lug attachment device, power battery and automobile |
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| Country | Link |
|---|---|
| CN (1) | CN105914334B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192916B (en) * | 2018-09-14 | 2024-02-02 | 骆驼集团武汉光谷研发中心有限公司 | Universal soft package battery module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887958A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Double-ended leading-out low internal resistance power storage device |
| CN202434616U (en) * | 2012-02-06 | 2012-09-12 | 福建师范大学 | Plated aluminum tab with rivet hole |
| CN203277543U (en) * | 2013-05-02 | 2013-11-06 | 东莞新能源科技有限公司 | Soft package lithium ion battery and pole lug thereof |
| CN203631652U (en) * | 2013-12-02 | 2014-06-04 | 深圳市慧通天下科技股份有限公司 | Lithium ion battery tab connecting structure and lithium ion battery |
| CN203812584U (en) * | 2013-12-30 | 2014-09-03 | 天津力神电池股份有限公司 | Heavy-current busbar |
-
2015
- 2015-08-12 CN CN201510492775.XA patent/CN105914334B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887958A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Double-ended leading-out low internal resistance power storage device |
| CN202434616U (en) * | 2012-02-06 | 2012-09-12 | 福建师范大学 | Plated aluminum tab with rivet hole |
| CN203277543U (en) * | 2013-05-02 | 2013-11-06 | 东莞新能源科技有限公司 | Soft package lithium ion battery and pole lug thereof |
| CN203631652U (en) * | 2013-12-02 | 2014-06-04 | 深圳市慧通天下科技股份有限公司 | Lithium ion battery tab connecting structure and lithium ion battery |
| CN203812584U (en) * | 2013-12-30 | 2014-09-03 | 天津力神电池股份有限公司 | Heavy-current busbar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105914334A (en) | 2016-08-31 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Electrode tab connection device, power battery and automobile Effective date of registration: 20190513 Granted publication date: 20180717 Pledgee: Suzhou Trust Co., Ltd. Pledgor: BEIJING CHANGCHENG HUAGUAN AUTOMOBILE TECHNOLOGY CO., LTD. Registration number: 2019990000418 |
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