CN204231743U - A kind of lithium battery pcb board fuse structure - Google Patents
A kind of lithium battery pcb board fuse structure Download PDFInfo
- Publication number
- CN204231743U CN204231743U CN201420752139.7U CN201420752139U CN204231743U CN 204231743 U CN204231743 U CN 204231743U CN 201420752139 U CN201420752139 U CN 201420752139U CN 204231743 U CN204231743 U CN 204231743U
- Authority
- CN
- China
- Prior art keywords
- copper foil
- pcb board
- equalizing circuit
- little
- fuse
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011889 copper foil Substances 0.000 claims abstract description 20
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000000155 melt Substances 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- -1 tilt Chemical compound 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a kind of lithium battery pcb board fuse structure, it comprises PCB substrate, described PCB substrate has battery tie point, equalizing circuit enters point, equalizing circuit goes out a little, described equalizing circuit enters a little and equalizing circuit go out a little between fuse is installed.Compared with prior art, a kind of lithium battery pcb board of the utility model fuse structure is owing to employing the attached tin of Copper Foil as fuse structure, when cell because internal fault causes short circuit, short circuit current can make tin melt, after tin melts and Copper Foil merge completely Copper Foil fusing point declined, add that the tension force that tin melts makes Copper Foil rupture smoothly, thus open circuit, the effective guarantee fail safe of whole Battery pack.
Description
[technical field]
The utility model relates to field of lithium, particularly relates to a kind of lithium battery pcb board fuse structure.
[background technology]
The package assembly aspect of current column lithium ion battery group, what major part adopted is that pcb board is as support structure plate, and utilize on pcb board the equalizing circuit with " horizontal balance, longitudinal overcurrent " function to carry out short-circuit protection to monomer battery core, it is the good a kind of technology of current practicality, but first generation pcb board protective circuit uses finished product fuse as fuse melting device, not only cost is high, and after fuse replacing several times, pcb board cannot reuse impaired; Second generation fuse melting device is the Copper Foil material of narrow two head breadths in the middle of adopting; electric current is controlled by the width controlling Copper Foil material; once the excessive Copper Foil material that will cause of electric current fuses; thus open circuit; but due to the fusing point of copper higher 1083 DEG C, short circuit be often everlasting do not blow before Copper Foil namely tilt, depart from pcb board base material; the machining accuracy of Copper Foil width is poor simultaneously, is difficult to accomplish 100% protective effect to setting protective current.
In view of above drawback, be necessary to provide a kind of lithium battery pcb board fuse structure to overcome above-mentioned defect in fact.
[utility model content]
The purpose of this utility model is to provide a kind of lithium battery pcb board fuse structure, and it not only increases the circuit protection performance of pcb board, also reduces cost simultaneously.
To achieve these goals, the utility model adopts following technical scheme: a kind of lithium battery pcb board fuse structure, it comprises PCB substrate, described PCB substrate has battery tie point, equalizing circuit enters point, equalizing circuit goes out a little, described equalizing circuit enters a little and equalizing circuit go out a little between fuse is installed.
One as a kind of lithium battery pcb board of the utility model fuse structure is improved, and described fuse is Copper Foil material.
One as a kind of lithium battery pcb board of the utility model fuse structure is improved, and the attached tin of Copper Foil material surface of described fuse, thickness is 8um-12um.
When battery pack is installed, each cell positive pole is all installed on the battery access point of pcb board, when whole battery pack work, connect battery access point and equalizing circuit enter circuit a little because pcb board inside is provided with, euqalizing current can be circulated to equalizing circuit from battery access point and enter a little, flow to equalizing circuit through fuse again to go out to put and the equalizing circuit connecting another batteries in parallel connection, to form the equilibrium of electric current between batteries in parallel connection.If but certain cell causes short circuit because of internal fault, when short circuit current flows through fuse, once exceed set point, tin above fuse can melt, after tin melts and Copper Foil merge completely Copper Foil fusing point declined, add that the tension force that tin melts makes Copper Foil rupture smoothly, thus open circuit, the effective guarantee fail safe of whole Battery pack.
The beneficial effects of the utility model are: when cell because internal fault causes short circuit, short circuit current can make tin melt, after tin melts and Copper Foil merge completely Copper Foil fusing point declined, add that the tension force that tin melts makes Copper Foil rupture smoothly, thus open circuit, the effective guarantee fail safe of whole Battery pack.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of a kind of lithium battery pcb board of the utility model fuse structure.
[embodiment]
Please refer to shown in Fig. 1, below in conjunction with case study on implementation, the utility model is described in further detail.
A kind of lithium battery pcb board of the utility model fuse structure, it comprises PCB substrate 10, described PCB substrate 10 has battery tie point 1, equalizing circuit enter a little 2, equalizing circuit goes out a little 4, described equalizing circuit enters a little and equalizing circuit go out a little between fuse 3 is installed.
Its operation principle is: when whole battery pack work, the circuit that battery access point 1 and equalizing circuit enter a little 2 is connected because PCB substrate 10 inside is provided with, euqalizing current can be circulated to equalizing circuit from battery access point 1 and enter a little 2, flow to equalizing circuit through fuse 3 again and go out a little 4 and connect the equalizing circuit of another batteries in parallel connection, to form the equilibrium of electric current between batteries in parallel connection.If but certain cell causes short circuit because of internal fault, when short circuit current flows through fuse, once exceed set point, the tin fusing above fuse is shunk and breaks Copper Foil, circuit disconnection, the effective guarantee fail safe of whole Battery pack.
A kind of lithium battery pcb board of the utility model fuse structure, be not restricted to described in specification and execution mode, therefore additional advantage and amendment can easily be realized for the personnel of familiar field, therefore when not deviating from the spirit and scope of the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown described.
Claims (3)
1. a lithium battery pcb board fuse structure, it comprises PCB substrate, described PCB substrate has battery tie point, equalizing circuit enters point, equalizing circuit goes out a little, it is characterized in that: described equalizing circuit enters a little and equalizing circuit go out a little between fuse is installed.
2. a kind of lithium battery pcb board fuse structure according to claim 1, is characterized in that: described fuse is Copper Foil material.
3. a kind of lithium battery pcb board fuse structure according to claim 1, is characterized in that: the attached tin of Copper Foil material surface of described fuse, thickness is 8um-12um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752139.7U CN204231743U (en) | 2014-11-24 | 2014-11-24 | A kind of lithium battery pcb board fuse structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420752139.7U CN204231743U (en) | 2014-11-24 | 2014-11-24 | A kind of lithium battery pcb board fuse structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204231743U true CN204231743U (en) | 2015-03-25 |
Family
ID=52929783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420752139.7U Active CN204231743U (en) | 2014-11-24 | 2014-11-24 | A kind of lithium battery pcb board fuse structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204231743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328875A (en) * | 2015-06-29 | 2017-01-11 | 深圳市沃特玛电池有限公司 | Safety structure of battery pack connection board |
| CN107484337A (en) * | 2017-08-22 | 2017-12-15 | 刘蓉 | A kind of overcurrent protection wiring board |
-
2014
- 2014-11-24 CN CN201420752139.7U patent/CN204231743U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328875A (en) * | 2015-06-29 | 2017-01-11 | 深圳市沃特玛电池有限公司 | Safety structure of battery pack connection board |
| CN107484337A (en) * | 2017-08-22 | 2017-12-15 | 刘蓉 | A kind of overcurrent protection wiring board |
| CN107484337B (en) * | 2017-08-22 | 2023-09-08 | 胜蓝科技股份有限公司 | Overcurrent protection circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20150325 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20150325 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210428 Granted publication date: 20150325 |
|
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240428 Granted publication date: 20150325 |