CN104409678B - Power battery pack and protective current-conducting plate thereof - Google Patents
Power battery pack and protective current-conducting plate thereof Download PDFInfo
- Publication number
- CN104409678B CN104409678B CN201410730443.6A CN201410730443A CN104409678B CN 104409678 B CN104409678 B CN 104409678B CN 201410730443 A CN201410730443 A CN 201410730443A CN 104409678 B CN104409678 B CN 104409678B
- Authority
- CN
- China
- Prior art keywords
- conductive plate
- electrode connecting
- battery pack
- connecting piece
- elongated
- 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
- 230000001681 protective effect Effects 0.000 title abstract 3
- 238000002955 isolation Methods 0.000 claims abstract description 20
- 238000003491 array Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 208000012868 Overgrowth Diseases 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000011133 lead Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 239000011135 tin Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 11
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention proposes a protective current-conducting plate of a power battery pack. The power battery pack comprises a plurality of single batteries which are arranged in a matrix way and are connected in parallel; the protective current-conducting plate comprises a plate body and a plurality of electrode connecting pieces which are arranged in a matrix way; two isolation grooves are symmetrically formed in the left and right sides of each electrode connecting piece; two slender flat straps are formed between the end parts of the isolation grooves on the left and right sides of the electrode connecting piece; the electrode connecting piece is electrically connected with the plate body through the slender flat straps. When in use, and when short circuit of a certain single battery inside the battery pack occurs, the slender flat straps of the electrode connecting pieces can be fused, so that the single battery in which overcurrent can occur in a single battery matrix is isolated from the battery matrix, diffusion of the faulted single battery is prevented, and the safety of the batteries is protected.
Description
Technical field
The present invention relates to the electrode connecting part of power battery pack, the protection more particularly, to a kind of power battery pack is conductive
Plate.
Background technology
Cell can improve battery pack output current by parallel connection, and battery voltage can be improved by series connection.Newly
Electrokinetic cell used by energy automobile, is exactly to be combined by certain connection in series-parallel by some cells, needed for being finally reached
Voltage and electric current.
In normal equalizing circuit, the streaming current between cell in parallel is very small, but if wherein one section is single
Body battery is short-circuited, then other batteries being in parallel therewith also can short circuit simultaneously, and electric current will increase sharply to normal in joint group
50 times of electric current even 100 times, not only should and joint group in all batteries all damage, also result in burning and blast etc. it is serious after
Really.
Security of the battery pack during the use of discharge and recharge it is critical that, countries in the world are all in electrokinetic cell
Substantial amounts of fund is put into safety research, the safety applications of electrokinetic cell are related to the success or failure of new-energy automobile.
The content of the invention
To be solved by this invention is the above mentioned problem that prior art is present, there is provided a kind of protection of power battery pack is led
Electroplax, the protection conductive plate can prevent battery pack because cell short circuit cause serious consequence.
To solve the above problems, the invention provides a kind of protection conductive plate of power battery pack, the power battery pack
Including several cells arranged in arrays and parallel with one another, the protection conductive plate includes that plate body is in matrix with several
The electrode connecting piece of arrangement, the electrode connecting piece left and right sides is arranged with two isolation channels, and electrode connecting piece is in left and right two
Two elongated bandlets are formed between the isolation channel end of side, electrode connecting piece is electrically connected by elongated bandlet with plate body.
Preferably, the isolation channel includes semi-annular slot and is arranged on the straight-line groove at semi-annular slot two ends, electrode connection
Piece forms two elongated bandlets between the straight-line groove of the left and right sides.
Preferably, in described protection conductive plate, plate body and electrode connecting piece are integral type structure.
Preferably, described protection conductive plate material is using one of following：Copper, aluminium, nickel, lead, tin, stainless steel, iron and
Its alloy.
Elongated bandlet of the invention is both used for beam conduction, and is cut off for fusing after circuital current exceedes limit value
Circuit.The sectional area of elongated bandlet can be determined by the limitation size of electric current and the melting temperature of conductive plate of cell.
Preferably, the sectional area of the elongated bandlet is 0.1-50mm2, the blowout current of elongated bandlet is not less than 20A.
Preferably, the thickness of the elongated bandlet is 0.1mm, width is 3mm, and length is 10mm.
Preferably, the positive conductive plate and negative conductive plate material are using one of following：Copper, aluminium, nickel, lead, tin, no
Rust steel, iron and its alloy；The sectional area of the elongated bandlet is 0.1-50mm2, the blowout current of elongated bandlet is not less than 20A.
Preferably, one end epitaxial lateral overgrowth of the positive conductive plate and negative conductive plate is stretched to form pole piece.
When the present invention is used, when there is short circuit in internal battery pack certain cell, electrode connecting piece it is elongated flat
Band will fuse, and so as to the cell of the possibility excessively stream in cell matrix be isolated from battery matrix, prevent
The diffusion of failure cell, protects the safety of battery.Due to integrated design, the antidetonation of battery pack can be not only ensured
Kinetic force, moreover it is possible to allow balanced mutually between cell, uniformity is good.
Brief description of the drawings
Fig. 1 is the structural representation of power battery pack of the present invention；
Fig. 2 is the structural representation of the protection conductive plate of an embodiment of the present invention；
Fig. 3 is the structural representation of the protection conductive plate of another kind embodiment of the invention；
Fig. 4 is the structural representation of the protection conductive plate of another kind embodiment of the invention.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples, but protection scope of the present invention is not limited to
This.
Embodiment one：
As illustrated in fig. 1 and 2, a kind of power battery pack, the battery includes several lists arranged in arrays and parallel with one another
Body battery 1, is connected to positive conductive plate 2 and negative conductive plate 3, the positive conductive plate on the positive pole and negative pole of the battery
2 is protection conductive plate, and the protection conductive plate includes plate body 5 and several electrode connecting pieces 4 arranged in arrays, and each electrode connects
Contact pin 4 is connected with the electrode of each cell, and the electrode connecting piece left and right sides is arranged with two isolation channels, the isolation
Groove includes semi-annular slot 6 and is arranged on the straight-line groove 8 at semi-annular slot two ends, electrode connecting piece 4 the left and right sides straight-line groove 8 it
Between form two elongated bandlets 7, electrode connecting piece 4 electrically connected by elongated bandlet 7 with plate body 5.In described protection conductive plate,
Plate body 5 and electrode connecting piece 4 are integral type structure.
The protection conductive plate material is stainless steel.The blowout current of the elongated bandlet 7 is 20A, the elongated bandlet 7
Width be 3mm, thickness is 0.1mm, and the sectional area of the elongated bandlet 7 is 0.3mm2。
When wherein one section cell is short-circuited, 20A, the electricity of the cell are more than by the electric current of elongated bandlet
The elongated bandlet that pole connection sheet is connected with protection conductive plate is fused so that the cell is isolated from cell matrix
Come, prevent the diffusion of failure cell, protect the safety of battery.
Embodiment two：
As shown in figs. 1 and 3, a kind of power battery pack, the battery includes several lists arranged in arrays and parallel with one another
Body battery 1, is connected to positive conductive plate 2 and negative conductive plate 3, the negative conductive plate on the positive pole and negative pole of the battery
3 is protection conductive plate, and the protection conductive plate includes plate body 5 and several electrode connecting pieces 4 arranged in arrays, and each electrode connects
Contact pin 4 is connected with the electrode of each cell, and the electrode connecting piece left and right sides is arranged with two isolation channels, the isolation
Groove includes semi-annular slot 6 and is arranged on the straight-line groove 8 at semi-annular slot two ends, electrode connecting piece 4 the left and right sides straight-line groove 8 it
Between form two elongated bandlets 7, electrode connecting piece 4 electrically connected by elongated bandlet 7 with plate body 5.In described protection conductive plate,
Plate body 5 and electrode connecting piece 4 are integral type structure.
One end epitaxial lateral overgrowth of the positive conductive plate 2 and negative conductive plate 3 is stretched to form pole piece 9, for multiple power electrics
Pond is serially connected to form power battery pack, or is used for the wiring of electrokinetic cell.
The blowout current of the elongated bandlet 7 is 50A, and the width of the elongated bandlet 7 is 4mm, and thickness is 0.15mm, institute
The sectional area for stating elongated bandlet 7 is 0.6mm2。
When wherein one section cell is short-circuited, 50A, the electricity of the cell are more than by the electric current of elongated bandlet
The elongated bandlet that pole connection sheet is connected with protection conductive plate is fused so that the cell is isolated from cell matrix
Come, prevent the diffusion of failure cell, protect the safety of battery.
Embodiment three：
As shown in figs. 1 and 3, a kind of power battery pack, the battery includes several lists arranged in arrays and parallel with one another
Body battery 1, is connected to positive conductive plate 2 and negative conductive plate 3, the positive conductive plate on the positive pole and negative pole of the battery
2 negative conductive plates 3 are protection conductive plate, and the protection conductive plate includes that plate body 5 and several electrodes arranged in arrays connect
Contact pin 4, each electrode connecting piece 4 is connected with the electrode of each cell, and the electrode connecting piece left and right sides is arranged with two
Isolation channel, the isolation channel includes semi-annular slot 6 and is arranged on the straight-line groove 8 at semi-annular slot two ends, and electrode connecting piece 4 is in left and right
Two elongated bandlets 7 are formed between the straight-line groove 8 of both sides, electrode connecting piece 4 is electrically connected by elongated bandlet 7 with plate body 5.
One end epitaxial lateral overgrowth of the positive conductive plate 2 and negative conductive plate 3 is stretched to form pole piece 9, for multiple power electrics
Pond is serially connected to form power battery pack, or is used for the wiring of electrokinetic cell.
The blowout current of the elongated bandlet 7 is 40A, and the width of the elongated bandlet 7 is 6mm, and thickness is 0.2mm, institute
The sectional area for stating elongated bandlet 7 is 1.2mm2。
When wherein one section cell is short-circuited, 40A, the electricity of the cell are more than by the electric current of elongated bandlet
The elongated bandlet that pole connection sheet is connected with protection conductive plate is fused so that the cell is isolated from cell matrix
Come, prevent the diffusion of failure cell, protect the safety of battery.
Example IV：
As shown in figure 4, a kind of protect conductive plate, the protection conductive plate is arranged in arrays with several including plate body 5
Electrode connecting piece 4, each electrode connecting piece 4 is connected with the electrode of each cell, and the electrode connecting piece left and right sides symmetrically sets
There are two isolation channels, the isolation channel is semi-annular slot 6, and electrode connecting piece 4 is formed between the isolation channel end of the left and right sides
Two elongated bandlets 7, electrode connecting piece 4 is electrically connected by elongated bandlet 7 with plate body 5.In described protection conductive plate, plate body 5
It is integral type structure with electrode connecting piece 4.
The blowout current of the elongated bandlet 7 is 20A, and the width of the elongated bandlet 7 is 6mm, and thickness is 0.2mm, institute
The sectional area for stating elongated bandlet 7 is 1.2mm2。
When wherein one section cell is short-circuited, 20A, the electricity of the cell are more than by the electric current of elongated bandlet
The elongated bandlet that pole connection sheet is connected with protection conductive plate is fused so that the cell is isolated from cell matrix
Come, prevent the diffusion of failure cell, protect the safety of battery.
Specific embodiment described herein is only to structure of the present invention explanation for example.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (8)
1. a kind of protection conductive plate of power battery pack, the power battery pack includes that several are arranged in arrays and parallel with one another
Cell, it is characterised in that：The protection conductive plate includes plate body and several electrode connecting pieces arranged in arrays, institute
State the electrode connecting piece left and right sides and be arranged with two isolation channels, electrode connecting piece shape between the isolation channel end of the left and right sides
Into two elongated bandlets, electrode connecting piece is electrically connected by elongated bandlet with plate body；In described protection conductive plate, plate body and electricity
Pole connection sheet is integral type structure；The sectional area of the elongated bandlet is 0.1-50mm2, the blowout current of elongated bandlet is not less than
20A。
2. the protection conductive plate of the power battery pack according to claim 1, it is characterised in that：The isolation channel includes half
Annular groove and the straight-line groove for being arranged on semi-annular slot two ends, electrode connecting piece form two carefully between the straight-line groove of the left and right sides
Bandlet long.
3. the protection conductive plate of power battery pack according to claim 1, it is characterised in that：Described protection conductive sheet metal
Matter is using one of following：Copper, aluminium, nickel, lead, tin, stainless steel, iron and its alloy.
4. the protection conductive plate of power battery pack according to claim 1, it is characterised in that：The thickness of the elongated bandlet
It is 0.1mm, width is 3mm, and length is 10mm.
5. a kind of power battery pack, the battery pack includes several cells arranged in arrays and parallel with one another, the battery
Positive pole and negative pole on be connected to positive conductive plate and negative conductive plate, it is characterised in that：The positive conductive plate and negative
At least one piece is protection conductive plate in conductive plate, and the protection conductive plate includes plate body and several electrodes arranged in arrays
Connection sheet, each electrode connecting piece is connected with the electrode of each cell, and the electrode connecting piece left and right sides is arranged with two
Isolation channel, electrode connecting piece forms two elongated bandlets between the isolation channel end of the left and right sides, and electrode connecting piece is by thin
Bandlet long is electrically connected with plate body；In described protection conductive plate, plate body and electrode connecting piece are integral type structure；It is described elongated flat
The sectional area of band is 0.1-50mm2, the blowout current of elongated bandlet is not less than 20A.
6. a kind of power battery pack as claimed in claim 5, it is characterised in that：The isolation channel includes semi-annular slot and setting
In the straight-line groove at semi-annular slot two ends, electrode connecting piece forms two elongated bandlets between the straight-line groove of the left and right sides.
7. a kind of power battery pack as claimed in claim 5, it is characterised in that：The positive conductive plate and negative conductive thin sheet material
Matter is using one of following：Copper, aluminium, nickel, lead, tin, stainless steel, iron and its alloy.
8. a kind of power battery pack as claimed in claim 5, it is characterised in that：The positive conductive plate and negative conductive plate
One end epitaxial lateral overgrowth is stretched to form pole piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730443.6A CN104409678B (en) | 2014-12-05 | 2014-12-05 | Power battery pack and protective current-conducting plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730443.6A CN104409678B (en) | 2014-12-05 | 2014-12-05 | Power battery pack and protective current-conducting plate thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104409678A CN104409678A (en) | 2015-03-11 |
| CN104409678B true CN104409678B (en) | 2017-05-24 |
Family
ID=52647289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410730443.6A Active CN104409678B (en) | 2014-12-05 | 2014-12-05 | Power battery pack and protective current-conducting plate thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104409678B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679988B (en) * | 2016-03-23 | 2019-01-04 | 苏州协鑫集成科技工业应用研究院有限公司 | Battery parallel connection part and its coupling method, battery modules and battery pack |
| CN107331826B (en) * | 2016-04-28 | 2023-07-04 | 周伟 | Connection method of power battery pack and battery pack produced by using same |
| CN113258222B (en) * | 2021-06-30 | 2021-09-17 | 南京卡飞软件技术有限公司 | Lithium ion battery pack capable of being protected autonomously |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204333084U (en) * | 2014-12-05 | 2015-05-13 | 赛恩斯能源科技有限公司 | Power battery pack and protection conductive plate thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61200665A (en) * | 1985-03-01 | 1986-09-05 | Matsushita Electric Ind Co Ltd | Formation of gasket for battery |
| JP2001273920A (en) * | 2000-03-28 | 2001-10-05 | Sanyo Electric Co Ltd | Storage battery and its manufacturing method |
| CN201413838Y (en) * | 2009-05-15 | 2010-02-24 | 东莞新能源科技有限公司 | Combination cover cap for lithium ion battery pack |
| CN102916158B (en) * | 2011-08-05 | 2016-03-02 | 深圳市沃特玛电池有限公司 | A kind of safeguard construction of power battery pack |
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- 2014-12-05 CN CN201410730443.6A patent/CN104409678B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204333084U (en) * | 2014-12-05 | 2015-05-13 | 赛恩斯能源科技有限公司 | Power battery pack and protection conductive plate thereof |
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|---|---|
| CN104409678A (en) | 2015-03-11 |
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