CN105185946A - Too-high current power-off protection structure of power battery - Google Patents
Too-high current power-off protection structure of power battery Download PDFInfo
- Publication number
- CN105185946A CN105185946A CN201510566067.6A CN201510566067A CN105185946A CN 105185946 A CN105185946 A CN 105185946A CN 201510566067 A CN201510566067 A CN 201510566067A CN 105185946 A CN105185946 A CN 105185946A
- Authority
- CN
- China
- Prior art keywords
- power
- sheet
- protection
- electrode
- top cover
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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 too-high current power-off protection structure of a power battery. The too-high current power-off protection structure comprises a top cover substrate; an electrode hole for an electrode to pass is arranged on the top cover substrate; the bottom of the electrode is inwardly concave to form a turnover space; the turnover space is communicated with outside; the bottom of the electrode is connected to a metal turnover sheet, which is bulged outwardly; the turnover sheet covers the turnover space; a power-off protection sheet is fixed on the inner wall of the top cover substrate; the power-off protection sheet surrounds the electrode; the bottom surface of the power-off protection sheet is converged towards the centre and is welded at the edge of the bulged position of the turnover sheet; and a notch is arranged on the power-off protection sheet near the welded turnover sheet. The too-high current power-off protection structure disclosed by the invention has the advantages of being simple in structure, high in instant power-off speed, free from rebound after power-off and steady in power-off critical load and is capable of enabling high current to pass.
Description
Technical field
The present invention relates to accessory battery, especially relate to that a kind of power-off speed simple for structure, instant is fast, power-off stablizes without bounce-back, power-off critical load and by the electrokinetic cell super-high-current power-off protection structure of big current.
Background technology
Electrokinetic cell is the important component part of new forms of energy battery, and its great advantage is that energy is high, pollution-free; Be the developing direction of new-energy automobile and energy-accumulating power station, thus the safety performance of battery is particularly important, when gas pressure loads exceeds the quata, as electrokinetic cell power-off in time can not can cause larger potential safety hazard.
Summary of the invention
For solving the problem, the object of the present invention is to provide that a kind of power-off speed simple for structure, instant is fast, power-off stablizes without bounce-back, power-off critical load and by the electrokinetic cell super-high-current power-off protection structure of big current.
The present invention is realized by following technical measures, a kind of electrokinetic cell super-high-current power-off protection structure, comprise top cover substrate, described top cover substrate is provided with for the electrode hole through electrode, described electrode bottom caves inward and forms upset space, described upset space is in communication with the outside, described electrode bottom is connected with a metal rotating sheet bulged, described rotating sheet covers upset space, described top cover substrate inwall is fixed with a power-off protection sheet, described power-off protection sheet is looped around surrounding them, described power-off protection sheet bottom surface draw in centre and be welded on rotating sheet bloat an edge, described power-off protection sheet is provided with indentation near welding rotating sheet place.
As a kind of optimal way, described power-off protection sheet bottom surface draw in centre and whole circle overlapping be welded on rotating sheet bloat an edge.
As a kind of optimal way, described rotating sheet is circular, square or oval, and can immediately overturn when ambient pressure load arrives critical value.
As a kind of optimal way, described power-off protection sheet passes through the whole circle full weld of laser beam on rotating sheet.
As a kind of optimal way, described indentation is on power-off protection sheet, and its track full circle bloats position around rotating sheet.
As a kind of optimal way, seal between described electrode and top cover substrate and be provided with seal, described electrode is fixed in electrode hole by securing member.
The present invention is just provided with the metal rotating sheet bulged under the electrodes, and metal rotating sheet and power-off protection sheet are by being welded to connect; Power-off protection sheet realizes air pressure power-off protection by indentation design; Power-off protection sheet draws in downwards and the edge that bloats being welded on rotating sheet realizes rotating sheet and power-off protection sheet contact-making surface by larger electric current; Rotating sheet and being welded to connect of power-off protection sheet possess sufficient intensity, when gas pressure loads exceeds the quata, break power-off protection notching, thus realize overload power-off protection by rotating sheet to upset in upset space.The present invention has that simple for structure, instant power-off speed is fast, power-off is stablized without bounce-back, power-off critical load and by the advantage of big current.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the embodiment of the present invention;
Fig. 2 is the A partial enlarged drawing of Fig. 1.
Embodiment
Contrast accompanying drawing below in conjunction with embodiment the present invention is described in further detail.
A kind of electrokinetic cell super-high-current power-off protection structure of the present embodiment, please refer to Fig. 1 and Fig. 2, comprise top cover substrate 4, described top cover substrate 4 is provided with for the electrode hole through electrode 2, described electrode 2 bottom caves inward and forms upset space 5, described upset space 5 is in communication with the outside, described electrode 2 bottom is connected with a metal rotating sheet 7 bulged, described rotating sheet 7 covers upset space 5, described top cover substrate 4 inwall is fixed with a power-off protection sheet 6, described power-off protection sheet 6 is looped around around electrode 2, described power-off protection sheet 6 bottom surface draw in centre and be welded on rotating sheet 7 bloat an edge 9, described power-off protection sheet 6 is provided with indentation 8 near welding rotating sheet 7 place.
This structure is provided with the metal rotating sheet 7 bulged below electrode 2, and metal rotating sheet 7 and power-off protection sheet 6 are by being welded to connect; Power-off protection sheet 6 realizes air pressure power-off protection by indentation 8 design; Power-off protection sheet 6 bottom surface is drawn in centre and the overlapping edge 9 that bloats being welded on rotating sheet 7 of whole circle realizes rotating sheet 7 with power-off protection sheet 6 contact-making surface by larger electric current; Rotating sheet and being welded to connect of power-off protection sheet 6 possess sufficient intensity, when gas pressure loads exceeds the quata, cross atmospheric pressure and make rotating sheet 7 break power-off protection notching 8 to upset in upset space 5, thus realize overload power-off protection.This structure has that simple for structure, instant power-off speed is fast, power-off is stablized without bounce-back, power-off critical load and can the advantage of super-high-current.
The electrokinetic cell super-high-current power-off protection structure of the present embodiment; please refer to Fig. 1 and Fig. 2; the basis of previous technique scheme can also be specifically; power-off protection sheet 6 bottom surface draw in centre and whole circle overlapping be welded on rotating sheet 7 bloat an edge 9, the power-off protection sheet 6 in the present embodiment by LASER BEAM WELDING on rotating sheet 7.Thus guarantee the stability that big current passes through.
The electrokinetic cell super-high-current power-off protection structure of the present embodiment, the basis of previous technique scheme can also be specifically, and rotating sheet 7 can be circular, square or oval.
The electrokinetic cell super-high-current power-off protection structure of the present embodiment, please refer to Fig. 1 and Fig. 2, and the basis of previous technique scheme can also be specifically, and indentation 8 is on power-off protection sheet 6, and its track full circle bloats an edge 9 around rotating sheet.In other embodiments, also can be the indentation of discontinuous, indentation tangent plane be semicircle in the present embodiment, and indentation tangent plane can also be quadrangle or triangle etc. in other embodiments.
The electrokinetic cell super-high-current power-off protection structure of the present embodiment; please refer to accompanying drawing 1; the basis of previous technique scheme can also be specifically seal between electrode 2 and top cover substrate 4 and be provided with seal 1, described electrode 2 is fixed in electrode hole by securing member 3.
More than that electrokinetic cell super-high-current power-off protection structure of the present invention and assembly method thereof are set forth; the present invention is understood for helping; but embodiments of the present invention are not restricted to the described embodiments; any do not deviate from the principle of the invention under do change, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, be included in protection scope of the present invention.
Claims (6)
1. an electrokinetic cell super-high-current power-off protection structure, it is characterized in that: comprise top cover substrate, described top cover substrate is provided with for the electrode hole through electrode, described electrode bottom caves inward and forms upset space, described upset space is in communication with the outside, described electrode bottom is connected with a metal rotating sheet bulged, described rotating sheet covers upset space, described top cover substrate inwall is fixed with a power-off protection sheet, described power-off protection sheet is looped around surrounding them, described power-off protection sheet bottom surface draw in centre and be welded on rotating sheet bloat an edge, described power-off protection sheet is provided with indentation near welding rotating sheet place.
2. electrokinetic cell super-high-current power-off protection structure according to claim 1, is characterized in that: described power-off protection sheet bottom surface draw in centre and be welded on rotating sheet bloat an edge.
3. electrokinetic cell super-high-current power-off protection structure according to claim 1, is characterized in that: described rotating sheet for circular, square or oval, and can overturn immediately when ambient pressure load arrives critical value.
4. electrokinetic cell super-high-current power-off protection structure according to claim 1 and 2, is characterized in that: described power-off protection sheet is welded on rotating sheet by the whole circle overlap of laser beam.
5. electrokinetic cell super-high-current power-off protection structure according to claim 1, is characterized in that: described indentation is on power-off protection sheet, and its track full circle bloats position around rotating sheet.
6. electrokinetic cell super-high-current power-off protection structure according to claim 1, it is characterized in that: seal between described electrode and top cover substrate and be provided with seal, described electrode is fixed in top cover electrode of substrate hole by securing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510566067.6A CN105185946A (en) | 2015-09-08 | 2015-09-08 | Too-high current power-off protection structure of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510566067.6A CN105185946A (en) | 2015-09-08 | 2015-09-08 | Too-high current power-off protection structure of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105185946A true CN105185946A (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510566067.6A Pending CN105185946A (en) | 2015-09-08 | 2015-09-08 | Too-high current power-off protection structure of power battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN105185946A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123784A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Cell, battery modules, electrokinetic cell and electric automobile |
| CN107123781A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Battery modules, electrokinetic cell and electric automobile |
| CN108075053A (en) * | 2016-11-08 | 2018-05-25 | 三星Sdi株式会社 | Rechargeable battery bag |
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| JP2013101890A (en) * | 2011-11-09 | 2013-05-23 | Toyota Motor Corp | Sealed battery |
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| JP2015162302A (en) * | 2014-02-26 | 2015-09-07 | 株式会社豊田自動織機 | Current cutoff device and power storage device using the same |
| CN205092287U (en) * | 2015-09-08 | 2016-03-16 | 深圳市科达利实业股份有限公司 | Power battery crosses heavy current outage protection architecture |
-
2015
- 2015-09-08 CN CN201510566067.6A patent/CN105185946A/en active Pending
Patent Citations (11)
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| JP2013101890A (en) * | 2011-11-09 | 2013-05-23 | Toyota Motor Corp | Sealed battery |
| WO2015056515A1 (en) * | 2013-10-16 | 2015-04-23 | 株式会社豊田自動織機 | Current breaker and storage device using same |
| JP2015079631A (en) * | 2013-10-16 | 2015-04-23 | 株式会社豊田自動織機 | Current cut-off device, and power storage device using the same |
| JP2015099766A (en) * | 2013-10-16 | 2015-05-28 | 株式会社豊田自動織機 | Current cutoff device and manufacturing method thereof |
| JP2015095370A (en) * | 2013-11-12 | 2015-05-18 | 株式会社豊田自動織機 | Power storage device |
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| WO2015076138A1 (en) * | 2013-11-20 | 2015-05-28 | 株式会社豊田自動織機 | Current interrupting device and power supply device using same |
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| JP2015162302A (en) * | 2014-02-26 | 2015-09-07 | 株式会社豊田自動織機 | Current cutoff device and power storage device using the same |
| CN104577029A (en) * | 2014-12-25 | 2015-04-29 | 宁德新能源科技有限公司 | Safety device for lithium ion battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123784A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Cell, battery modules, electrokinetic cell and electric automobile |
| CN107123781A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Battery modules, electrokinetic cell and electric automobile |
| CN107123781B (en) * | 2016-02-25 | 2020-10-20 | 比亚迪股份有限公司 | Battery module, power battery and electric automobile |
| CN108075053A (en) * | 2016-11-08 | 2018-05-25 | 三星Sdi株式会社 | Rechargeable battery bag |
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