CN205985214U - Flexibly -packaged lithium battery pack - Google Patents
Flexibly -packaged lithium battery pack Download PDFInfo
- Publication number
- CN205985214U CN205985214U CN201620722130.0U CN201620722130U CN205985214U CN 205985214 U CN205985214 U CN 205985214U CN 201620722130 U CN201620722130 U CN 201620722130U CN 205985214 U CN205985214 U CN 205985214U
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- CN
- China
- Prior art keywords
- lithium battery
- copper
- positive terminal
- lithium cell
- terminal
- 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.)
- Expired - Fee Related
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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
The utility model relates to a flexibly -packaged lithium battery pack. The utility model discloses flexibly -packaged lithium battery pack adopts compound conducting strip as excessive electric adaptor, realize the series connection between the lithium cell, compound conducting strip includes aluminum -based layer and copper base, copper base and aluminum -based layer overlapping link together, the copper base and the positive terminal of lithium cell laminate, the aluminum -based layer and the negtive terminal of another lithium cell laminate, thereby the series connection between the realization lithium cell, because the lithium cell just, negtive terminal's junction is metal material of the same race, metal material's is active the same, consequently, just there is not electrochemical reaction to produce yet, and owing to closely laminate between aluminum -based layer and the copper base, there is not the clearance, consequently, can not produce electrochemical reaction and corrosion between aluminum -based layer on the complex conducting strip and the copper base, thereby the increase because of resistance has been avoided, lead to the lithium cell just, the occurence of failure that negtive terminal seriously generates heat and catches fire, consequently the utility model discloses soft -packing battery group security nature is high, has prolonged lithium cell life.
Description
Technical field
The utility model is related to integrated lithium battery group technical field, particularly to a kind of flexible package lithium cell group.
Background technology
At present, domestic new forms of energy application is constantly promoted, lithium battery batch application in New-energy electric vehicle, communication
The occasions such as base station, yacht, we common to integrated battery group be to be combined by many cells.This patent is related to soft
Packaging cell, voltage has 1.8,2.4,3.2,3.6V specification, according to the needs of producer, by multiple flexible package cell strings
Parallel combination, is fixed in special plastic skeleton, meets the requirement of voltage and power output, is such as used for dolly electric motor car volume
Determining voltage has 80V/200AH, 144V/200AH, and mini-bus 356V/300AH big bus has 554V/600AH.
Due to the needs of battery process technology, the positive and negative electrode material of each flexible package single lithium battery be respectively adopted copper and
Flexible package lithium cell both positive and negative polarity is connected during series connection by aluminum；At present, domestic flexible package lithium cell Integrated manufacture business is using directly
Copper aluminium electrode piece is fitted and connected.
But positive pole copper sheet and negative pole aluminium flake have been directly connected to drawback, because the metal activity series of copper, aluminium element are different,
Link together and can produce electrochemical reaction, especially wet environment is more serious, when copper, the contact surface of two kinds of metals of aluminium and air
In moisture, easily form electrolyte, thus defining with aluminium as negative pole, copper is as positive pole under carbon dioxide and other impurities effect
Galvanic cell, make aluminium surface produce couple corrosion, generate linen alundum (Al2O3), cause copper, the connecing of aluminium pole piece junction
Resistance of getting an electric shock increases.The electrode slice of lithium battery is big due to area, and the positive/negative plate binding face between battery has gap, after long-time use
Can be as above-mentioned, aluminium flake oxidation and rusting, lead to resistance to increase.
Pure electric automobile, in acceleration or quick charge, can produce heavy-current discharge and charging, when these high currents flow through
Copper aluminium pole piece junction, can be brought rapidly up because resistance is big；If battery pack overtemperature can be by supporting BMS cell tube under normal circumstances
Reason system automatically powers off protection, makes battery can not continue discharge and recharge, leads to automobile can not start or charge；If running into BMS pipe
The reason system failure lost efficacy, then cell damage can be led to even fire to occur.
Utility model content
What the purpose of this utility model was overcome the shortcomings of, and above-mentioned prior art exists, and provide a kind of structure simple,
Rationally, using composite conductive plate as excessive electricity adaptor it is ensured that the positive and negative electrode junction of lithium battery be identical activity metal
Material and between very close to each other, be avoided that because occur electrochemical rust and produce resistance, and lead to positive and negative electrode terminal heat up too high
Occur fire incident, have a safety feature, the flexible package lithium cell group of long service life.
The purpose of this utility model is realized in：
A kind of flexible package lithium cell group, including at least two lithium batteries, composite conducting piece, train wheel bridge, lower plate, copper facing spiral shell
Bolt and copper facing packing ring, described lithium battery is provided with positive terminal and negative terminal, and described positive terminal is made up of copper product,
Described negative terminal is made up of aluminum, is sequentially connected in series between described lithium battery, passes through compound between described lithium battery
Conducting strip is connected in series, and described composite conducting piece includes base copper and aluminum base layer, and base copper and aluminum base layer overlap link together,
Described base copper is connected with the positive terminal of a lithium battery, and described aluminum base layer is connected with the negative terminal of another lithium battery.
Described copper-based layer surface is fitted with the surface of the positive terminal of a lithium battery, the surface of described aluminum base layer and another lithium
The surface laminating of the negative terminal of battery.
Described base copper and aluminum base layer bond together up and down.
Described positive terminal and negative terminal are in L tabular, and the first side plate of described positive terminal is connected on lithium battery, institute
The second side plate stating positive terminal extends to the side of lithium battery, and the 3rd side plate of described negative terminal is connected on lithium battery,
4th side plate of negative terminal extends to the opposite side of lithium battery.
Second side plate of described positive terminal is fitted with copper-based layer surface, the 4th side plate of negative terminal and the table of aluminum base layer
Fit in face.
Described train wheel bridge is made up of copper product, and described lower plate is made up of aluminium clad iron or aluminum, described train wheel bridge,
Lower plate clamps negative terminal and positive terminal up and down, and composite conducting piece is located between negative terminal and positive terminal, train wheel bridge
All make using with both positive and negative polarity cross-talk identical material with lower plate, thus being further ensured that the company of negative terminal and positive terminal
The place of connecing will not produce electrochemical reaction, it is to avoid chemical attack.
It is equipped with through hole, described lower folder on described copper facing packing ring, train wheel bridge, positive terminal, composite conducting piece, negative terminal
Plate is provided with screw, described copper facing screw bolt passes copper facing packing ring, train wheel bridge, positive terminal, composite conducting piece, negative terminal
Through hole and threaded with lower plate, therefore the anode and cathode terminals of lithium battery and composite conductive plate are connected firmly, and are all
Being fitted with face in face, and fits tightly between the aluminum base layer due to composite conductive plate and base copper, very close to each other, therefore compound
Electrochemical reaction and corrosion will not be produced between aluminum base layer on conducting strip and base copper, thus avoiding the increase because of resistance,
Described positive terminal and negative terminal are located at same one end of lithium battery.
The beneficial effects of the utility model are as follows：
The utility model flexible package lithium cell group realizes the series connection between lithium battery, composite conducting piece using composite conducting piece
Including aluminum base layer and base copper, base copper is fitted and connected with the positive terminal of lithium battery, the negative pole of aluminum base layer and another lithium battery
Terminal is fitted and connected, thus realizing the series connection between lithium battery, due to the junction of the positive and negative electrode terminal of lithium battery be same
Kind of metal material, the activity of metal material is identical, does not therefore also just have electrochemical reaction to produce, and due to aluminum base layer with copper-based
Fit tightly between layer, very close to each other, electrochemistry will not be produced between aluminum base layer therefore on composite conducting piece and base copper anti-
Should and corrosion, thus avoiding the increase because of resistance, lithium battery heavy-current discharge and when charging, lead to lithium battery positive and negative extreme
The sub accident caught fire of seriously generating heat occurs, and therefore the utility model flexible-packed battery group is safe, extends lithium battery and uses
Life-span.
Brief description
Fig. 1 is the structural representation of the utility model flexible package lithium cell group.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the cross section structure diagram at A-A in Fig. 2.
Fig. 4 is the mplifying structure schematic diagram at A in Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model.
As shown in Fig. 1 to Fig. 4, a kind of flexible package lithium cell group, including multiple lithium batteries 1, composite conducting piece 4, train wheel bridge
44th, lower plate 45, copper facing bolt 43 and copper facing packing ring 46, in the form of sheets, the side of described lithium battery 1 is provided with described lithium battery 1
Positive terminal 2 and negative terminal 3, described positive terminal 2 is made up of copper product, and described negative terminal 3 is made up of aluminum,
Between described lithium battery 1, both positive and negative polarity is connected in series successively, is connected in series by composite conducting piece 4 between described lithium battery 1, described
Composite conducting piece 4 includes base copper 41 and aluminum base layer 42, and base copper 41 and aluminum base layer 42 overlap link together, described base copper
41 are connected with the positive terminal 2 of a lithium battery 1, and described aluminum base layer 42 is connected with the negative terminal 3 of another lithium battery 1.
Fitted with the surface of the positive terminal 2 of a lithium battery 1 in described base copper 41 surface, the surface of described aluminum base layer 42 with
The surface laminating of the negative terminal 3 of another lithium battery 1.
Described base copper 41 and aluminum base layer bond together about 42.
Described positive terminal 2 and negative terminal 3 are in L tabular, and the first side plate 21 of described positive terminal 2 is connected to lithium battery
On 1, the second side plate 22 of described positive terminal 2 extends to the side of lithium battery 1, and the 3rd side plate 31 of described negative terminal 3 is even
It is connected on lithium battery 1, the 4th side plate 32 of negative terminal 3 extends to the opposite side of lithium battery 1.
Second side plate 22 of described positive terminal 2 is fitted with base copper 41 surface, the 4th side plate 32 of negative terminal 3 and aluminium
The surface laminating of basic unit 42.
Described train wheel bridge 44 is made up of copper product, and described lower plate 45 is made up of aluminium clad iron or aluminum, described on
Clamping plate 44, lower plate clamp negative terminal 3 and positive terminal 2 about 45, composite conducting piece 4 is located at negative terminal 3 and positive terminal
Between son 2.
It is equipped with through hole on described copper facing packing ring 46, train wheel bridge 44, positive terminal 2, composite conducting piece 4, negative terminal 3,
Described lower plate 45 is provided with screw, and described copper facing bolt 43 sequentially passes through copper facing packing ring 46, train wheel bridge 44, positive terminal 2, answers
Close conducting strip 4, the through hole of negative terminal 3 and threaded with lower plate 45.The utility model passes through said structure by positive terminal
Son 2, composite conducting piece 4, negative terminal 3 three are fixed together.
Described positive terminal 2 and negative terminal 3 are located at same one end of lithium battery 1.
Operation principle of the present utility model is：
The series connection realizing between lithium battery using composite conducting piece due to the utility model flexible package lithium cell group, lithium battery
The junction of positive and negative electrode terminal be same metal material, the activity of metal material is identical, does not therefore also just have electrochemistry
Reaction produces, and due to very close to each other between aluminum base layer and base copper, the therefore aluminum base layer on composite conducting piece and base copper
Between will not produce electrochemical reaction and corrosion, the resistance of the junction of positive and negative electrode terminal will not increase, even if lithium battery is entering
When row heavy-current discharge and charging, positive and negative electrode terminal also will not seriously generate heat and high temperature burning is red, thus avoid lithium battery catching fire
Accident occur, therefore the utility model flexible-packed battery group is safe, extends lithium battery service life.
Claims (8)
1. a kind of flexible package lithium cell group, is characterized in that, including at least two lithium batteries (1), described lithium battery (1) is just provided with
Extremely son (2) and negative terminal (3), described positive terminal (2) is made up of copper product, and described negative terminal (3) is by aluminium
Material is made, and is sequentially connected in series, it is characterized in that, also include composite conducting piece (4), described lithium battery between described lithium battery (1)
(1) it is connected in series by composite conducting piece (4) between, described composite conducting piece (4) includes base copper（41）And aluminum base layer（42）,
Base copper（41）And aluminum base layer（42）Overlap links together, described base copper（41）Positive terminal (2) with a lithium battery (1)
Connect, described aluminum base layer（42）It is connected with the negative terminal (3) of another lithium battery (1).
2. flexible package lithium cell group according to claim 1, is characterized in that, described base copper（41）Surface and a lithium battery
(1) the surface laminating of positive terminal (2), described aluminum base layer（42）The negative terminal (3) of surface and another lithium battery (1)
Fit in surface.
3. flexible package lithium cell group according to claim 2, is characterized in that, described base copper（41）And aluminum base layer（42）Up and down
Bond together.
4. flexible package lithium cell group according to claim 3, is characterized in that, described positive terminal (2) and negative terminal (3) are in
L tabular, the first side plate of described positive terminal (2)（21）It is connected on lithium battery (1), the second side of described positive terminal (2)
Plate（22）Extend to the side of lithium battery (1), the 3rd side plate of described negative terminal (3)（31）It is connected on lithium battery (1), bear
The 4th extremely sub (3) side plate（32）Extend to the opposite side of lithium battery (1).
5. flexible package lithium cell group according to claim 4, is characterized in that, the second side plate of described positive terminal (2)（22）
With base copper（41）Fit in surface, the 4th side plate of negative terminal (3)（32）With aluminum base layer（42）Surface laminating.
6. flexible package lithium cell group according to claim 4, is characterized in that, also include train wheel bridge（44）And lower plate（45）,
Described train wheel bridge（44）It is made up of copper product, described lower plate（45）It is made up of aluminium clad iron or aluminum, described train wheel bridge
（44）, lower plate（45）Clamp negative terminal (3) and positive terminal (2) up and down, composite conducting piece (4) is located at negative terminal (3)
And positive terminal (2) between.
7. flexible package lithium cell group according to claim 6, is characterized in that, also include copper facing bolt（43）And copper facing packing ring
（46）, described copper facing packing ring（46）, train wheel bridge（44）, positive terminal (2), composite conducting piece (4), negative terminal be all provided with (3)
There is through hole, described lower plate（45）It is provided with screw, described copper facing bolt（43）Sequentially pass through copper facing packing ring（46）, train wheel bridge
（44）, positive terminal (2), composite conducting piece (4), negative terminal (3) through hole and and lower plate（45）Threaded.
8. flexible package lithium cell group according to claim 1, is characterized in that, described positive terminal (2) and negative terminal (3) set
Same one end in lithium battery (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722130.0U CN205985214U (en) | 2016-07-11 | 2016-07-11 | Flexibly -packaged lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722130.0U CN205985214U (en) | 2016-07-11 | 2016-07-11 | Flexibly -packaged lithium battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985214U true CN205985214U (en) | 2017-02-22 |
Family
ID=58023332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620722130.0U Expired - Fee Related CN205985214U (en) | 2016-07-11 | 2016-07-11 | Flexibly -packaged lithium battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205985214U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935782A (en) * | 2017-02-27 | 2017-07-07 | 多氟多（焦作）新能源科技有限公司 | A kind of battery unit and the battery module including the battery unit |
| CN107369788A (en) * | 2017-06-20 | 2017-11-21 | 宁德时代新能源科技股份有限公司 | Power battery top cover assembly, power battery and battery module |
-
2016
- 2016-07-11 CN CN201620722130.0U patent/CN205985214U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935782A (en) * | 2017-02-27 | 2017-07-07 | 多氟多（焦作）新能源科技有限公司 | A kind of battery unit and the battery module including the battery unit |
| CN107369788A (en) * | 2017-06-20 | 2017-11-21 | 宁德时代新能源科技股份有限公司 | Power battery top cover assembly, power battery and battery module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20180711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |