CN105990555A - Connecting device for tab of soft-packing lithium battery - Google Patents
Connecting device for tab of soft-packing lithium battery Download PDFInfo
- Publication number
- CN105990555A CN105990555A CN201510058891.0A CN201510058891A CN105990555A CN 105990555 A CN105990555 A CN 105990555A CN 201510058891 A CN201510058891 A CN 201510058891A CN 105990555 A CN105990555 A CN 105990555A
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- CN
- China
- Prior art keywords
- block
- lug
- circuit board
- lithium battery
- attachment means
- 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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- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a connecting device for a tab of a soft-packing lithium battery. The device comprises a tensioning block, a tab connecting plate and an integrated plate, wherein a through groove is formed in the integrated plate; a stopping block is arranged on the integrated plate at one side of the through groove; the tab connecting plate is clamped into the through groove; the tensioning block is mounted on the integrated plate; a flexible touch finger provided with a contact is arranged on the tensioning block; the contact is in contact with the tab connecting plate; the contact of the flexible touch finger is deformed to be in close contact with the tab connecting plate under the contact pressure; the tabs of a plurality of batteries, passing through the through groove to be integrally overlapped are clamped between the stopping block and the tab connecting plate. The device is convenient to dismount the batteries, simple in structure, reliable to connect and small in internal resistance; the tabs of the batteries under various serial and parallel connection forms can be connected.
Description
Technical field
The present invention relates to a kind of battery pole ear attachment means, particularly relating to one need not weld, and ratio
Securing member, simple in construction are saved in bolt connection, connect reliable soft package lithium battery cathode tab attachment means.
Background technology
Soft package lithium battery battery case used by new-energy automobile now, the connection in series-parallel of its battery is by by electricity
After pond lug is overlapped mutually, the mode such as laser welding, ultrasonic bonding of employing is attached.Although weldering
Connect to have and connect reliable, Stability Analysis of Structures, automaticity advantages of higher, but, it is used in battery pole ear
Connection on but there is a lot of problem, such as: 1) laser welding and ultrasonic bonding broadly fall into irreversible
Connect, not removable after welding, when finding that certain lithium battery therein exists performance difference or can not
When normally using, also problematic lithium battery cannot be replaced, can only be allowed to affect in set of cells it
The normal use of its lithium battery, or cause whole set of cells to be scrapped, this can cause the waste of resource undoubtedly,
Too increase use cost simultaneously；2) when crossing stream in set of cells, can only be disconnected by FCL relay,
Can not accurately disconnect single battery in case, though cause there may exist FCL disconnect after, have in case therefore
The single battery of barrier is it is possible to short-circuit condition can be in；3) thickness of soft package lithium battery is less, lug
The least with the spacing of lug, it is difficult to meet the space required for laser welding and ultrasonic bonding, this
Not only make troubles to welding operation, and battery pole ear also easily sustains damage when welding.Use
Although the lug that bolt connects battery can avoid welding the problem that can not be split brought, but fastens
Number of packages amount is many, and internal resistance is big, can reduce the energy density of battery.
Summary of the invention
Because the defect existing for above-mentioned prior art, it is an object of the invention to, it is provided that a kind of soft
Bag lithium battery pole ear attachment means so that it is the dismounting being easy between battery, and simple in construction, connection can
Leaning on, internal resistance is little, can be universally used in the connection of the lug of the battery of multiple connection in series-parallel form.
To achieve these goals, a kind of soft package lithium battery cathode tab attachment means proposed according to the present invention,
Comprising: step up block, lug connection sheet and circuit board；Wherein, described circuit board offers wear
Groove, is provided with block on the described described circuit board wearing groove side；Described lug connects sheet and is placed in institute
State and wear in groove；The described block that steps up is installed on described circuit board, is provided with flexible touching described stepping up on block
Referring to, described flexible fingertip has contact, and described contact connects sheet with described lug and contacts；In contact pressure
Under power, the described contact deflection of described flexible fingertip, it is connected sheet with described lug and is in close contact, will wear
The lug of the multiple batteries being superimposed wearing groove described in crossing is clamped in described block with described lug even
Between contact pin.
The present invention also can be applied to the following technical measures to achieve further.
Aforesaid soft package lithium battery cathode tab attachment means, is wherein provided with snap fit on described circuit board,
The framework of described battery is provided with buckle, and described circuit board buckles peace by described snap fit with described buckle
It is loaded on described battery.
Aforesaid soft package lithium battery cathode tab attachment means, the wherein said block that steps up is electric insulation and fire-retardant
Plastic, described flexible fingertip is spring leaf.
Aforesaid soft package lithium battery cathode tab attachment means, wherein said lug connects sheet and includes positive and negative copper bar
Lug connect sheet.
Aforesaid soft package lithium battery cathode tab attachment means, wherein said flexible fingertip is metallic spring,
The overcurrent capability of each described contact is more than 25A.
Aforesaid soft package lithium battery cathode tab attachment means, wherein steps up to be provided with on block snap fit described,
Described circuit board 3 is provided with buckle, described in step up block and buckled by described grab and described buckle and install
On described circuit board.
Aforesaid soft package lithium battery cathode tab attachment means, wherein offers two institutes on shown circuit board
State and wear groove, the described circuit board wearing outside groove described in two is respectively equipped with block；Described in two
In wearing groove, difference one described lug of holding connects sheet；The described block that steps up is installed on described circuit board,
Two described lugs connect between sheet；Described step up block be respectively provided on two sides with described flexible fingertip,
The described contact of described flexible fingertip connects sheet with two described lugs respectively and contacts；And described in two
Distance between block steps up the block length in described flexible fingertip direction and two described lugs described in being less than
Connecting the thickness sum of sheet, the size of its difference is the 2 of the deflection of the described contact of described flexible fingertip
Times.
Aforesaid soft package lithium battery cathode tab attachment means, wherein steps up described flexible fingertip on block described
Between connect and have fuse, when external loading is excessive or during internal short-circuit of battery, described battery big electric current mistake
Stream, described fuse disconnects, battery case power-off.
Aforesaid soft package lithium battery cathode tab attachment means, wherein steps up to be provided with on block hydroecium described, logical
Cross described hydroecium be described lug connect sheet heat radiation or heating, the most described hydroecium return described in step up block
There is provided pressure, make described in step up block more difficult loosen.
Aforesaid soft package lithium battery cathode tab attachment means, is wherein provided with relay group described stepping up on block
Part, to realize the cut-out of electricity between described battery.
The present invention compared with prior art has clear advantage and beneficial effect.By above-mentioned technical side
Case, a kind of soft package lithium battery cathode tab attachment means of the present invention, at least have the advantage that
One, a kind of soft package lithium battery cathode tab attachment means of the present invention, the battery connected splits convenient,
Can will not bring disaster to other battery in set of cells scrap together with instantaneously changing when there being cell damage,
And owing to battery pole ear is not connected with, so internal resistance is little.
Two, a kind of soft package lithium battery cathode tab attachment means of the present invention, simple in construction, connect reliable,
Easy for installation, save packaging technology.
Accompanying drawing explanation
Fig. 1 is the bolted schematic diagram of prior art soft package lithium battery cathode tab.
Fig. 2 is the schematic diagram of prior art soft package lithium battery cathode tab ultrasonic bonding.
Fig. 3 is the schematic diagram that soft package lithium battery cathode tab of the present invention connects.
Fig. 4 is the schematic perspective view that soft package lithium battery cathode tab of the present invention connects.
Fig. 5 is the exploded perspective schematic diagram of the present invention a kind of soft package lithium battery cathode tab attachment means.
Fig. 6 is showing of the flexible fingertip stepping up block of the present invention a kind of soft package lithium battery cathode tab attachment means
It is intended to.
Fig. 7 is the flexible fingertip stepping up block and the pole of the present invention a kind of soft package lithium battery cathode tab attachment means
Ear connects the schematic diagram of sheet contact.
Fig. 8 is that the block that steps up of the present invention a kind of soft package lithium battery cathode tab attachment means connects between flexible fingertip
It is connected to the schematic diagram of fuse.
Fig. 9, Figure 10 and Figure 11 are to use soft package lithium battery cathode tab attachment means of the present invention to connect battery pole
The flow chart of ear.
Figure 12 is the schematic diagram of the circuit board of the present invention a kind of soft package lithium battery cathode tab attachment means.
1: step up block 1-1: grab
2: lug connection sheet 3: circuit board
3-1: snap fit 3-2: block
3-3: buckle 3-4: wear groove
4: battery 5: lug
6: flexible fingertip 6-1: contact
7: fuse 8: the lug of positive and negative copper bar connects sheet
Detailed description of the invention
By further illustrating the technological means and merit that the present invention taked by reaching predetermined goal of the invention
Effect, below in conjunction with accompanying drawing and preferred embodiment, to a kind of soft package lithium battery cathode tab proposed according to the present invention
Its detailed description of the invention of attachment means, step, structure, feature and effect thereof describe in detail.
The soft package lithium battery cathode tab attachment means of the present invention is mainly by stepping up block 1, lug connection sheet 2 and collection
Plate 3 is become to form.Wherein, circuit board 3 offers and wears groove 3-4, wearing the integrated of groove 3-4 side
Plate 3 is provided with block 3-2, and lug connection sheet 2 is placed in be worn in groove 3-4, steps up block 1 and is installed on collection
Becoming on plate 3, be provided with flexible fingertip 6 stepping up on block 1, flexible fingertip 6 has contact 6-1, contact
6-1 connects sheet 2 with lug and contacts.After multiple batteries 4 are assembled together, their lug 5 passes through
Shaping is superimposed, and the lug that is superimposed 5 wears groove 3-4 through circuit board 3, is sandwiched in gear
Block 3-2 is connected with lug between sheet 2, is connecing by stepping up the contact 6-1 of the flexible fingertip 6 of block 1
Deform under touch pressure, be connected sheet 2 with lug and be in close contact, as it is shown in fig. 7, make to be superimposed upon one
The lug 5 risen is clamped in block 3-2 and is connected between sheet 2 with lug.
Circuit board 3 is a connector, as shown in Fig. 5 and Figure 12, is provided with snap fit on circuit board 3
3-1, is provided with buckle on the framework of battery 4, and circuit board 3 is by snap fit 3-1 and battery 4 framework
On buckle buckle be installed on battery 4.As it is shown in figure 5, lug connects sheet 2 includes positive and negative copper bar
Lug connect sheet 8.Stepping up block 1 is a movable part, is electric insulation and fire-retardant plastic, as
Shown in Fig. 8 and Figure 12, stepping up to be provided with on block 1 snap fit 1-1, circuit board 3 be provided with buckle 3-3,
Stepping up block 1 is to be buckled by grab 1-1 and buckle 3-3 to be installed on circuit board 3.As shown in Figure 6,
Flexible fingertip 6 is spring leaf, is as inserts, is embedded in and steps up in block 1, and flexible fingertip 6 is permissible
For metallic spring, it can include multiple contact 6-1, and the overcurrent capability of the most each contact 6-1 can
With more than 25A.
As it is shown in figure 5, offer two on circuit board 3 to wear groove 3-4, wear outside groove 3-4 at two
Circuit board 3 on be respectively equipped with block 3-2.In two are worn groove 3-4, one lug of holding connects respectively
Sheet 2.Stepping up block 1 to be installed on circuit board 3, two lugs connect between sheet 2.Stepping up block 1
Being respectively provided on two sides with flexible fingertip 6, the contact 6-1 of flexible fingertip 6 is connected sheet 2 with two lugs respectively
Contact.Wherein, the distance between two block 3-2 is less than stepping up the block 1 length in flexible fingertip 6 direction
Degree is connected the thickness sum of sheet 2 with two lugs, and the size of its difference is the contact 6-1 of flexible fingertip 6
2 times of deflection.
The step that the soft package lithium battery cathode tab attachment means using the present invention connects battery pole ear is as follows: first
First, as it is shown in figure 9, moved down by circuit board 3, make the lug 5 being superimposed through integrated
Groove 3-4 is worn on plate 3；Then, by the snap fit 3-1 on circuit board 3 and the card on battery 4 framework
Button buckles, and makes circuit board 3 buckle with battery 4 and is connected, and wherein the block 3-2 on circuit board 3 is to folded
The lug 5 being added together is the most spacing；Afterwards, as shown in Figure 10, lug is connected sheet 2
Position and be placed on circuit board 3 wears in groove 3-4, makes lug connect sheet 2 and fits with lug 5；
Finally, as shown in figure 11, block 1 will be stepped up and move down, make grab 1-1 and the collection stepping up on block 1
Become the buckle 3-3 on plate 3 to buckle, block 1 will be stepped up and buckle on circuit board 3, and make to step up on block 1
Flexible fingertip 6 be connected sheet 2 with lug and fit tightly, thus the lug 5 being superimposed is clamped
It is connected between sheet 2 with lug at block 3-2.
As shown in Figure 8, the present invention has fuse 7 stepping up on block 1 can to connect between flexible fingertip 6, when
External loading is excessive or during internal short-circuit of battery, the big overcurrent of battery 4, fuse 7 disconnects, electricity
Pond case power-off, makes battery 4 that thermal runaway will not occur, will not burn, and then protection battery case, improves
The safety that battery case uses.In addition to making to step up the block 1 function with fuse, the present invention also may be used
To arrange relay assembly on block 1 stepping up, to realize the cut-out of electricity between battery 4.
Equally, the present invention steps up block 1 and can also expand a lot of function, such as, stepping up block 1
It is provided with hydroecium, on the one hand connects sheet 2 for lug by hydroecium and dispel the heat or heat, on the other hand hydroecium
Pressure can also be provided to stepping up block 1, make to step up block 1 more difficult loosening.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to what the present invention implemented
Scope, the simple equivalence made according to claims of the present invention and description changes and modifies,
Still fall within the range of technical solution of the present invention.
Claims (10)
1. a soft package lithium battery cathode tab attachment means, it is characterised in that comprising: step up block (1),
Lug connects sheet (2) and circuit board (3)；Wherein, described circuit board (3) offers wear groove
(3-4), the described described circuit board (3) wearing groove (3-4) side is provided with block (3-2)；
Described lug connection sheet (2) is worn in groove (3-4) described in being placed in；The described block (1) that steps up is installed on
On described circuit board (3), it is provided with flexible fingertip (6), described flexibility on block (1) described stepping up
Fingertip (6) has contact (6-1), and described contact (6-1) is connected sheet (2) and connects with described lug
Touch；Under contact pressure, described contact (6-1) deformation of described flexible fingertip (6), with described
Lug connect sheet (2) be in close contact, will pass described in wear groove (3-4) be superimposed multiple
The lug (5) of battery (4) be clamped in described block (3-2) be connected with described lug sheet (2) it
Between.
2. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that Qi Zhong
Described circuit board (3) is provided with snap fit (3-1), is provided with buckle on the framework of described battery (4),
Described circuit board (3) is installed on described battery (4) by described snap fit (3-1) with the fastening of described buckle
On.
3. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that Qi Zhongsuo
Stating that to step up block (1) be electric insulation and fire-retardant plastic, described flexible fingertip (6) is spring leaf.
4. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that Qi Zhongsuo
State lug connection sheet (2) and include that the lug of positive and negative copper bar connects sheet (8).
5. soft package lithium battery cathode tab attachment means as claimed in claim 4, it is characterised in that Qi Zhongsuo
Stating flexible fingertip (6) is metallic spring, and the overcurrent capability of each described contact (6-1) is more than
25A。
6. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that Qi Zhong
The described block (1) that steps up is provided with snap fit (1-1), is provided with buckle (3-3) on described circuit board 3,
The described block (1) that steps up is installed on described by described grab (1-1) with described buckle (3-3) fastening
On circuit board (3).
7. the soft package lithium battery cathode tab attachment means as described in any claim in claim 1 to 6,
It is characterized in that wherein offering on shown circuit board (3) wearing groove (3-4) described in two, two
Wear described in individual and be respectively equipped with block (3-2) on the described circuit board (3) in groove (3-4) outside；Two
In wearing groove (3-4) described in individual, difference one described lug of holding connects sheet (2)；Described step up block (1)
Being installed on described circuit board (3), two described lugs connect between sheet (2)；Step up described
Block (1) be respectively provided on two sides with described flexible fingertip (6), described the described of flexible fingertip (6) touches
Point (6-1) connects sheet (2) with two described lugs respectively and contacts；And two described blocks (3-2)
Between distance be less than described in step up the block (1) length in described flexible fingertip (6) direction and two institutes
Stating lug and connect the thickness sum of sheet (2), the size of its difference is the institute of described flexible fingertip (6)
State 2 times of deflection of contact (6-1).
8. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that Qi Zhong
Described step up to connect between block (1) the most described upper flexible fingertip (6) have fuse (7), work as external loading
During excessive or internal short-circuit of battery, the big overcurrent of described battery (4), described fuse (7) breaks
Open, battery case power-off.
9. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that Qi Zhong
The described block (1) that steps up is provided with hydroecium, is that described lug connects sheet (2) heat radiation by described hydroecium
Or heating, the most described hydroecium return described in step up block (1) provide pressure, make described in step up block (1)
More difficult loosening.
10. soft package lithium battery cathode tab attachment means as claimed in claim 1, it is characterised in that wherein
It is provided with relay assembly on block (1), to realize the cut-out of electricity between described battery (4) described stepping up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058891.0A CN105990555B (en) | 2015-02-04 | 2015-02-04 | Soft package lithium battery cathode tab attachment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058891.0A CN105990555B (en) | 2015-02-04 | 2015-02-04 | Soft package lithium battery cathode tab attachment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105990555A true CN105990555A (en) | 2016-10-05 |
| CN105990555B CN105990555B (en) | 2018-09-04 |
Family
ID=57037418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510058891.0A Active CN105990555B (en) | 2015-02-04 | 2015-02-04 | Soft package lithium battery cathode tab attachment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105990555B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218207A (en) * | 2014-07-16 | 2014-12-17 | 浙江超威创元实业有限公司 | Lithium ion battery module structure |
| CN204102979U (en) * | 2014-10-09 | 2015-01-14 | 北京长城华冠汽车科技有限公司 | Battery modules circuit board |
| CN204407399U (en) * | 2015-02-04 | 2015-06-17 | 北京长城华冠汽车科技有限公司 | Soft package lithium battery cathode tab jockey |
-
2015
- 2015-02-04 CN CN201510058891.0A patent/CN105990555B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218207A (en) * | 2014-07-16 | 2014-12-17 | 浙江超威创元实业有限公司 | Lithium ion battery module structure |
| CN204102979U (en) * | 2014-10-09 | 2015-01-14 | 北京长城华冠汽车科技有限公司 | Battery modules circuit board |
| CN204407399U (en) * | 2015-02-04 | 2015-06-17 | 北京长城华冠汽车科技有限公司 | Soft package lithium battery cathode tab jockey |
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| Publication number | Publication date |
|---|---|
| CN105990555B (en) | 2018-09-04 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 101300 Renhe Town, Beijing, Shunyi District, the north of the town of Victoria Hospital, the 4 (Science and technology innovation function area), 1 Applicant after: BEIJING CHANGCHENG HUAGUAN AUTOMOBILE TECHNOLOGY CO., LTD. Address before: 101300 Beijing City, Yuhua Tianzhu Airport Industrial Zone B Shunyi District Road No. 29 Applicant before: CH AUTO TECHNOLOGY CORPORATION LTD. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Connecting device for tab of soft-packing lithium battery Effective date of registration: 20190513 Granted publication date: 20180904 Pledgee: Suzhou Trust Co., Ltd. Pledgor: BEIJING CHANGCHENG HUAGUAN AUTOMOBILE TECHNOLOGY CO., LTD. Registration number: 2019990000418 |