CN200976370Y - Lithium ion secondary battery with external protecting equipment - Google Patents
Lithium ion secondary battery with external protecting equipment Download PDFInfo
- Publication number
- CN200976370Y CN200976370Y CNU2006200219306U CN200620021930U CN200976370Y CN 200976370 Y CN200976370 Y CN 200976370Y CN U2006200219306 U CNU2006200219306 U CN U2006200219306U CN 200620021930 U CN200620021930 U CN 200620021930U CN 200976370 Y CN200976370 Y CN 200976370Y
- Authority
- CN
- China
- Prior art keywords
- thermistor
- welded
- cell
- protective device
- rivet
- 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 - Lifetime
Links
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
-
- 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
Abstract
The utility model relates to a rectangular lithium-ion rechargeable battery, comprising a cell and a protecting device, wherein the rivet on the cell top provides an electrode, while the cell crust and the cell cover provide the other electrode. The protecting device, welded between the rivet and the cell cover, is composed of a thermistor and a couple of nickel tablets, wherein a nickel tablet is welded between the rivet and an end of the thermistor, while the other nickel tablet is welded between the cell cover and the other end of the thermistor, which is wrapped up by an insulation patch attached to the cell top. The utility model has the advantages of high reliability; easy operability and convenience for mass production in particular to a rectangular battery with metal crust preventing the lithium-ion battery from security risks as short circuit, overflow current or over-charging/discharging.
Description
Technical field
The utility model relates to a kind of square shaped lithium ion secondary battery, particularly square metal-back battery.
Background technology
Lithium ion battery because have the specific energy height, have extended cycle life, characteristics such as self discharge is little, memory-less effect, paid close attention to deeply in recent years.Along with the fast development of mobile phone, notebook computer, digital product, the demand of lithium ion battery is increased day by day.It is overheated that the impact that was subjected to big electric current in storage, transportation under but lithium ion battery can take place because of fortuitous events such as external short circuits in the past produces, and causes the blast of battery; Battery is subjected to the impact of big electric current when discharging and recharging, also may cause the blast of battery, simultaneously battery overcharge and the state of overdischarge under also can reduce the fail safe and the reliability of battery greatly.
The utility model content
For solve lithium ion battery in the past because of short circuit, overcharge, defective that fail safe that unusual conditions such as overdischarge and overcurrent cause and reliability reduce, the utility model provides a kind of lithium rechargeable battery that has external protective device.
The lithium rechargeable battery that has external protective device of the present utility model is made up of cell body and protective device; cell body has two electrodes; an electrode of cell body is battery case and cell cover; another electrode is the rivet at cell body top; between rivet and cell cover, be welded with protective device; described protective device is formed by connecting by nickel sheet and thermistor; the two ends of two relative sides of nickel sheet are welded on respectively on the two ends of thermistor; the wherein end with the two ends of the nickel sheet of thermistor welding is not welded on the rivet; the other end is welded on the cell cover, and thermistor is coated by the insulation paster and is pasted on the top of cell body.
The utility model under the circuit normal condition, is low resistive state at battery welded top protective device, guarantees the circuit operate as normal; When circuit is short-circuited or current anomaly when big, it is enough little that the protective device self-heating increases its impedance electric current is restricted to, and plays the overcurrent protection effect, thereby make the electric current of battery be controlled fail safe and the reliability that improves battery.The lithium rechargeable battery that has external protective device that the utility model proposes has fail safe and reliability height, simple to operate, the advantage being convenient to produce in batches.
Description of drawings
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the structural representation of cell body 7, and Fig. 3 is the structural representation of insulation paster 1, and Fig. 4 is the structural representation of protective device 8.
Embodiment
Embodiment one: specify present embodiment below in conjunction with Fig. 1-Fig. 4, present embodiment is made up of cell body 7 and protective device 8, cell body 7 has two electrodes, an electrode of cell body 7 is battery case 5 and cell cover 6, another electrode is the rivet 4 at cell body 7 tops, between rivet 4 and cell cover 6, be welded with protective device 8, described protective device 8 is formed by connecting by nickel sheet 2 and thermistor 3, the two ends of two nickel sheet 2 relative sides are welded on respectively on the two ends of thermistor 3, the wherein end with the two ends of the nickel sheet 2 of thermistor 3 welding is not welded on the rivet 4, the other end is welded on the cell cover 6, and thermistor 3 is coated by insulation paster 1 and is pasted on the top of cell body 7; Nickel sheet 2 is electric resistance welding, Laser Welding or supersonic welding with the welding manner of cell cover 6 or rivet 4; The material of battery case 5 is aluminium, aluminium alloy and steel etc.
Embodiment two: specify present embodiment below in conjunction with Fig. 4, thermistor 3 is a semistor in the present embodiment, and be coated with metallic tin or ashbury metal layer in its surface, other composition and annexation are with embodiment one.
Embodiment three: specify present embodiment below in conjunction with Fig. 1 and Fig. 4, the part that grows that two nickel sheets 2 are not welded on the two poles of the earth of cell body 7 in the present embodiment is turned back to the top of insulation paster 1, can make things convenient for battery and other consuming device to weld, other composition and annexation are with embodiment one or embodiment two.
Claims (4)
1; the lithium rechargeable battery that has external protective device; it is made up of cell body (7) and protective device (8); cell body (7) has two electrodes; an electrode of cell body (7) is battery case (5) and cell cover (6); another electrode is the rivet (4) at cell body (7) top; it is characterized in that between rivet (4) and cell cover (6), being welded with protective device (8); described protective device (8) is formed by connecting by nickel sheet (2) and thermistor (3); the two ends of the relative side of two nickel sheets (2) are welded on respectively on the two ends of thermistor (3); the wherein end with the two ends of the nickel sheet (2) of thermistor (3) welding is not welded on the rivet (4); the other end is welded on the cell cover (6), and thermistor (3) is coated by insulation paster (1) and is pasted on the top of cell body (7).
2, the lithium rechargeable battery that has external protective device according to claim 1 is characterized in that described thermistor (3) is a semistor.
3, the lithium rechargeable battery that has external protective device according to claim 2 is characterized in that being coated with metallic tin or ashbury metal layer on the surface of described thermistor (3).
4,, it is characterized in that the part that grows that described two nickel sheets (2) are not welded on the two poles of the earth of cell body (7) turns back to the top of insulation paster (1) according to claim 1, the 2 or 3 described lithium rechargeable batteries that have external protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200219306U CN200976370Y (en) | 2006-11-02 | 2006-11-02 | Lithium ion secondary battery with external protecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200219306U CN200976370Y (en) | 2006-11-02 | 2006-11-02 | Lithium ion secondary battery with external protecting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200976370Y true CN200976370Y (en) | 2007-11-14 |
Family
ID=38902651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200219306U Expired - Lifetime CN200976370Y (en) | 2006-11-02 | 2006-11-02 | Lithium ion secondary battery with external protecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200976370Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393227A (en) * | 2014-12-10 | 2015-03-04 | 天津力神电池股份有限公司 | Secondary battery |
| CN107681070A (en) * | 2017-08-30 | 2018-02-09 | 江苏春兰清洁能源研究院有限公司 | A kind of safe superstructure of secondary cell |
| CN109728218A (en) * | 2018-12-28 | 2019-05-07 | 银隆新能源股份有限公司 | The installation method and battery modules of temperature acquisition line |
| US10950912B2 (en) | 2017-06-14 | 2021-03-16 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
-
2006
- 2006-11-02 CN CNU2006200219306U patent/CN200976370Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393227A (en) * | 2014-12-10 | 2015-03-04 | 天津力神电池股份有限公司 | Secondary battery |
| US10950912B2 (en) | 2017-06-14 | 2021-03-16 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11031651B2 (en) | 2017-06-14 | 2021-06-08 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11777151B2 (en) | 2017-06-14 | 2023-10-03 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11916203B2 (en) | 2017-06-14 | 2024-02-27 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| US11923514B2 (en) | 2017-06-14 | 2024-03-05 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| CN107681070A (en) * | 2017-08-30 | 2018-02-09 | 江苏春兰清洁能源研究院有限公司 | A kind of safe superstructure of secondary cell |
| CN109728218A (en) * | 2018-12-28 | 2019-05-07 | 银隆新能源股份有限公司 | The installation method and battery modules of temperature acquisition line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1724857B1 (en) | Jelly-roll type electrode assembly and lithium secondary battery with the same | |
| JP3187152U (en) | Power battery safety top cover | |
| CN201994346U (en) | Power battery metal housing | |
| CN105428722A (en) | High safety performance lithium ion battery and battery pack | |
| KR20080068266A (en) | Rechageable battery | |
| JP2006049312A (en) | Can type secondary cell | |
| CN107275557A (en) | Universal rechargeable battery and its assemble method that a kind of use lithium-ion electric core is constituted | |
| CN206947390U (en) | A kind of external battery anti-explosion cover plate assembly for easily changing insurance protection device | |
| ES2931467T3 (en) | Positive electrode plate and electrochemical device | |
| WO2003067700A1 (en) | Lithium secondary battery having internal protection circuit | |
| CN202662683U (en) | Motive power battery top cover | |
| CN101604764A (en) | A kind of lithium battery that protective circuit is built into battery cap inside | |
| US20150104672A1 (en) | Safety device of lithium-ion battery | |
| CN200976370Y (en) | Lithium ion secondary battery with external protecting equipment | |
| WO2003088375A3 (en) | Dual chemistry hybrid battery systems | |
| CN202839773U (en) | Power battery safety top cap | |
| KR20080097771A (en) | Electrode assembly and rechargeable battery with the same | |
| JP4928099B2 (en) | Battery pack, mobile device and battery pack charging method | |
| CN202977584U (en) | Lithium ion battery over-charge safety protection device | |
| JP3188012U (en) | Lithium-ion battery safety device | |
| CN203038986U (en) | Safe top cover of power cell | |
| CN201259904Y (en) | Lithium-ion electric core and positive pole lug for manufacturing the electric core | |
| CN206610880U (en) | A kind of lithium ion battery | |
| EP2779270B1 (en) | Embedded battery cell having novel structure | |
| KR102167425B1 (en) | Protective Circuit For Secondary Battery and Method For Controlling Thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071114 |
|
| EXPY | Termination of patent right or utility model |