CN103542955A - Temperature inductor for lithium ion batteries - Google Patents
Temperature inductor for lithium ion batteries Download PDFInfo
- Publication number
- CN103542955A CN103542955A CN201210246782.8A CN201210246782A CN103542955A CN 103542955 A CN103542955 A CN 103542955A CN 201210246782 A CN201210246782 A CN 201210246782A CN 103542955 A CN103542955 A CN 103542955A
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- lithium ion
- temperature inductor
- ion battery
- battery temperature
- wiring board
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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 invention discloses a temperature inductor for lithium ion batteries. The temperature inductor comprises a flexible printed circuit board and a thermal resistor, wherein the thermal resistor is fixed and electrically connected to the flexible printed circuit board and is provided with two bridging wires; and the flexible printed circuit board is connected with an external instrument through the two bridging wires. The temperature inductor for the lithium ion batteries can be used for detecting the temperatures of portions among different layers of aluminum foil packs of the lithium ion batteries, so that accurate temperature instruction can be obtained in the whole charging and discharging period, and the reliability of the operation of a system is improved. In addition, the temperature inductor is small in size, low in thermal inertia, low in measurement lag, high in mechanical property, convenient to mount and long in service life, does not have internal air gaps, is vibration-proof, resists impact, and can be bent.
Description
Technical field
The present invention relates to a kind of battery temperature inductor for detection of temperature between each layer of Aluminium Foil Package of lithium ion battery.
Background technology
Lithium ion battery, since 1991 come out, owing to having the advantage of high voltage, high-energy-density, high-specific-power and enjoy people's favor, has been widely used in various portable electric appts at present.Along with the day of world energy sources is becoming tight, the continuous of international oil price risen, and electric motor car and hybrid electric vehicle will become following important vehicles, and lithium ion battery receives much concern as candidate's electrical source of power.Compare with lithium battery, lithium ion battery adopts graphite cathode to substitute lithium metal, and security improves greatly, yet at physical shock, high temperature, the lithium ion battery under condition such as overcharge and still may occur blast, combustion phenomena.On the one hand, lithium ion battery adopts organic solution electrolyte, when battery organic solvent when overcharging state easily produces irreversible oxygenolysis on anodal surface, in the generation of emitting a large amount of inflammable gass of simultaneous of amount of heat, cause internal temperature of battery and pressure sharply to rise, thereby to battery, bring the danger of blast, burning.On the other hand, there are a series of potential themopositive reaction in inside lithium ion cell self, when battery in use causes that because of the short circuit of a variety of causes inside and outside internal temperature rise is larger, is easily initiated.If when the Li-Ion rechargeable battery by chemical reaction stored energy causes uncontrollable internal-response because of external pressure etc., there will be Yin Gaowen to cause the precarious position of thermal runaway.This state further serious words is just likely on fire.And, along with capacity constantly increases, also, along with the energy of storing constantly increases, occur that the danger of this state is also more and more higher.Therefore safety issue has become one of key issue of lithium ion battery maximization.
Overcharging is one of the safety problem that in use may encounter of lithium ion battery, especially in the process of lithium ion battery group work.The over-charge protective method of lithium ion battery mainly contains physical method and chemical method at present.Physical method is mainly that chemical method is mainly to improve from the internal material of battery by introducing PTC resistor (PTC), use external monitoring device, adopting safety valve etc.
Temperature monitoring is the directly the most effective mode of lithium ion battery over-charge protective.Lithium ion battery is when used aloned, and security can effectively be guaranteed, but for the electric battery being used in combination, the situation more complicated that will become, and electric battery will be because of any batteries wherein because overcharging or mistake is put the mismatch causing and ended.At present industry only can detect lithium battery bag appearance temperature, and between each layer of Aluminium Foil Package, temperature cannot Detection & Controling, and internal layer temperature is often higher than appearance temperature.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of lithium ion battery temperature inductor, lithium ion battery temperature inductor of the present invention can be used in and detects temperature between each layer of Aluminium Foil Package of lithium ion battery, thereby in the whole charging and discharging cycle, obtain accurate temperature indication, improve the reliability of system works.
The present invention for the technical scheme that solves its technical matters and adopt is:
A kind of lithium ion battery temperature inductor, comprise flexible print wiring board and thermal resistance, described flexible print wiring board is fixed and be electrically connected on to described thermal resistance, is provided with two bridge formation wires, and described flexible print wiring board is connected conducting by described two bridge formation wires with external meters.
Further technical scheme of the present invention is:
Described flexible print wiring board comprises glue-free one side copper-clad base plate, coverlay and stiffening plate, and described glue-free one side copper-clad base plate is folded between described coverlay and described stiffening plate.
Described glue-free one side copper-clad base plate consists of one deck Copper Foil and one deck polyimide film.
Described Copper Foil be rolled copper foil and thickness below 12 microns, described polyimide film is that liquid polyimide film and thickness are below 8 microns.
Described coverlay is to comprise that any one and thickness in the heat curing-type coverlay of polyamide-imides coverlay and polyphenylene sulfide coverlay is between 5-8 micron.
Described stiffening plate be one deck polyimide film or some layers by the polyimide film of resin bonding, and the thickness of stiffening plate is 3-9 mil.
Be provided with adhesion agent layer, described stiffening plate is adhered to described flexible print wiring board by described adhesion agent layer, and described adhesion agent layer is that thermmohardening adhesion agent layer and thickness are 25-35 micron.
Described thermal resistance is metallic conductor.
Described two bridge formation wires are two parallel wires, and every wire appearance is coated with polythene material layer.
Between described thermal resistance and described flexible print wiring board and between described bridge formation wire and described flexible print wiring board, by Pb-free solder, weld and cover with black ink.
The invention has the beneficial effects as follows: lithium ion battery temperature inductor of the present invention comprises flexible print wiring board and thermal resistance, flexible print wiring board is fixed and be electrically connected on to thermal resistance, be provided with two bridge formation wires, flexible print wiring board is connected conducting by two bridge formation wires with external meters, lithium ion battery temperature inductor of the present invention can be used in and detects temperature between each layer of Aluminium Foil Package of lithium ion battery, thereby obtain accurate temperature indication in the whole charging and discharging cycle, improve the reliability of system works, and volume is little, inner without air-gap, thermal inertia is little, measure hysteresis little, good mechanical property, resistance to shaking, shock resistance, can be crooked, be convenient to install and long service life.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of lithium ion battery temperature inductor of the present invention;
Fig. 2 is the cross section structure schematic diagram of lithium ion battery temperature inductor of the present invention;
Fig. 3 is the cross section structure schematic diagram of the flexible print wiring board of lithium ion battery temperature inductor of the present invention.
Embodiment
By particular specific embodiment, embodiment of the present invention is described below, those skilled in the art can understand advantage of the present invention and effect easily by content disclosed in the present specification.The present invention also can other different mode implement, and, carries out different modifications and change within not deviating from disclosed scope that is.
Embodiment: a kind of lithium ion battery temperature inductor, comprise flexible print wiring board 1 and thermal resistance 2, described flexible print wiring board is fixed and be electrically connected on to described thermal resistance, be provided with two bridge formation wires 3, described flexible print wiring board is connected conducting by described two bridge formation wires with external meters.
Described flexible print wiring board comprises glue-free one side copper-clad base plate, coverlay 13 and stiffening plate 14, and described glue-free one side copper-clad base plate is folded between described coverlay and described stiffening plate.
Glue-free one side copper clad foil substrate (2layer-S) in flexible print wiring board (FPC) structure, it at high temperature has superior dimensional stability, stable peel strength and the splendid Qu Xingneng that disturbs, its structure comprises one deck Copper Foil 11 and the liquid Kapton of one deck (PI) 12, wherein Copper Foil requires to choose calendering copper, thickness is below 12um, and PI thickness is below 8um.The coverlay that covers Copper Foil exposed section is the high temperature resistant thermosetting type films such as polyamide-imides (PAI) or polyphenylene sulfide (PPS), and thickness requirement is between 5 ~ 8um.Stiffening plate is that thickness is the Kapton of 3 ~ 9mil, also can thickness be 1, the Kapton collocation epoxy resin of 2mil is combined into the stiffening plate that thickness is 3 ~ 9mil.The solid of stiffening plate laminating use is thermosetting solid 15, and thickness is at 25 ~ 35um.
Thermal resistance is to utilize material when temperature variation, and its resistance is also along with the feature changing is measured temperature.When change in resistance, work instrument just demonstrates the corresponding temperature value of resistance.To be resistance value based on metallic conductor increase this characteristic with the increase of temperature to Thermistor Temperature Measurement carries out thermometric.Thermal resistance is mostly made by simple metal material, as the metal material General Requirements of thermal resistance: the replicability in the temperature range that large and stable as far as possible temperature coefficient, resistivity wants large (reduce the size of sensor under same sensitivity), using with stable chemical physics performance, material is good, resistance value varies with temperature will a value function relation (preferably linear).What application was maximum at present is platinum and copper, in addition, has started now to adopt the materials such as nickel, manganese and rhodium to manufacture thermal resistance.Thermal resistance is mainly to utilize resistance value to vary with temperature and change this characteristic and measure temperature and the parameter relevant with temperature, in temperature detecting precision, requires higher occasion more applicable.The thermal resistance material that the present invention selects be platinum, copper or nickel all can, the features such as temperature-coefficient of electrical resistance is large, good linearity, stable performance, serviceability temperature wide ranges, handling ease that they have.Measure temperature range in-200 ℃ to+500 ℃.
Two bridge formation wires are two parallel wires, are that appearance is with the coated bridge formation tygon wire of polythene material.
Thermal resistance collocation flexible print wiring board (FPC), one end is placed in inside battery, by bridge formation wire and external meters, connects, and detects internal temperature of battery, works as over-charging of battery, and temperature rises while reaching dangerous values, disconnects charging current.Each part requirement adopts Pb-free solder 4 to connect, and covers with black liquid state ink resin 5 in junction, shields.
The present invention can be used for detecting temperature between each layer of Aluminium Foil Package of lithium battery bag, thereby obtains accurate temperature indication in the whole charging and discharging cycle, improves the reliability of system works.
Above-described embodiment is only the illustrative principle of the invention and effect thereof, but not for limiting the present invention.The scope of the present invention, should be as listed in claims.
Claims (10)
1. a lithium ion battery temperature inductor, it is characterized in that: comprise flexible print wiring board and thermal resistance, described flexible print wiring board is fixed and be electrically connected on to described thermal resistance, be provided with two bridge formation wires, described flexible print wiring board is connected conducting by described two bridge formation wires with external meters.
2. lithium ion battery temperature inductor as claimed in claim 1, it is characterized in that: described flexible print wiring board comprises glue-free one side copper-clad base plate, coverlay and stiffening plate, described glue-free one side copper-clad base plate is folded between described coverlay and described stiffening plate.
3. lithium ion battery temperature inductor as claimed in claim 2, is characterized in that: described glue-free one side copper-clad base plate consists of one deck Copper Foil and one deck polyimide film.
4. lithium ion battery temperature inductor as claimed in claim 3, is characterized in that: described Copper Foil be rolled copper foil and thickness below 12 microns, described polyimide film is that liquid polyimide film and thickness are below 8 microns.
5. lithium ion battery temperature inductor as claimed in claim 2, is characterized in that: described coverlay is to comprise that any one and thickness in the heat curing-type coverlay of polyamide-imides coverlay and polyphenylene sulfide coverlay is between 5-8 micron.
6. lithium ion battery temperature inductor as claimed in claim 2, is characterized in that: described stiffening plate be one deck polyimide film or some layers by the polyimide film of resin bonding, and the thickness of stiffening plate is 3-9 mil.
7. lithium ion battery temperature inductor as claimed in claim 6, it is characterized in that: be provided with adhesion agent layer, described stiffening plate is adhered to described flexible print wiring board by described adhesion agent layer, and described adhesion agent layer is that thermmohardening adhesion agent layer and thickness are 25-35 micron.
8. lithium ion battery temperature inductor as claimed in claim 1, is characterized in that: described thermal resistance is metallic conductor.
9. lithium ion battery temperature inductor as claimed in claim 1, is characterized in that: described two bridge formation wires are two parallel wires, and every wire appearance is coated with polythene material layer.
10. lithium ion battery temperature inductor as claimed in claim 1, is characterized in that: between described thermal resistance and described flexible print wiring board and between described bridge formation wire and described flexible print wiring board, by Pb-free solder, welded and covered with black ink.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210246782.8A CN103542955B (en) | 2012-07-17 | 2012-07-17 | Lithium ion battery temperature inductor |
| TW102203909U TWM456590U (en) | 2012-07-17 | 2013-03-04 | Lithium ion battery temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210246782.8A CN103542955B (en) | 2012-07-17 | 2012-07-17 | Lithium ion battery temperature inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542955A true CN103542955A (en) | 2014-01-29 |
| CN103542955B CN103542955B (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210246782.8A Active CN103542955B (en) | 2012-07-17 | 2012-07-17 | Lithium ion battery temperature inductor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103542955B (en) |
| TW (1) | TWM456590U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758546A (en) * | 2014-12-19 | 2016-07-13 | 中国电子科技集团公司第十八研究所 | Fully-sealed hydrogen-nickel battery electrolyte internal temperature measurement method |
| CN109632123A (en) * | 2018-12-07 | 2019-04-16 | 苏州长风航空电子有限公司 | A kind of flexible paste chip temperature sensor |
| CN110553751A (en) * | 2018-06-01 | 2019-12-10 | 深圳市科敏敏感元件科技有限公司 | Ultrathin temperature sensor and manufacturing method thereof |
| CN112615073A (en) * | 2020-12-31 | 2021-04-06 | 上海捷新动力电池系统有限公司 | FFC temperature sampling structure in power battery pack and technological process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945803A (en) * | 1998-06-09 | 1999-08-31 | Black & Decker Inc. | Apparatus for determining battery pack temperature and identity |
| CN1897788A (en) * | 2005-07-15 | 2007-01-17 | 日本梅克特隆株式会社 | Reinforced film for flexible printing circuit board |
| CN201303033Y (en) * | 2008-08-06 | 2009-09-02 | 顺达科技股份有限公司 | An integrated flexible composite substrate structure |
| WO2011135702A1 (en) * | 2010-04-28 | 2011-11-03 | トヨタ自動車株式会社 | Cell temperature measurement device, cell temperature measurement method, and cell production method |
| CN102468023A (en) * | 2010-11-12 | 2012-05-23 | 三星Sdi株式会社 | Protection circuit module including thermistor and secondary battery pack having the same |
| CN102472672A (en) * | 2010-04-22 | 2012-05-23 | 矢崎总业株式会社 | Connection structure for a wiring material |
| CN202676321U (en) * | 2012-07-17 | 2013-01-16 | 昆山雅森电子材料科技有限公司 | Lithium ion battery temperature sensor |
-
2012
- 2012-07-17 CN CN201210246782.8A patent/CN103542955B/en active Active
-
2013
- 2013-03-04 TW TW102203909U patent/TWM456590U/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945803A (en) * | 1998-06-09 | 1999-08-31 | Black & Decker Inc. | Apparatus for determining battery pack temperature and identity |
| CN1897788A (en) * | 2005-07-15 | 2007-01-17 | 日本梅克特隆株式会社 | Reinforced film for flexible printing circuit board |
| CN201303033Y (en) * | 2008-08-06 | 2009-09-02 | 顺达科技股份有限公司 | An integrated flexible composite substrate structure |
| CN102472672A (en) * | 2010-04-22 | 2012-05-23 | 矢崎总业株式会社 | Connection structure for a wiring material |
| WO2011135702A1 (en) * | 2010-04-28 | 2011-11-03 | トヨタ自動車株式会社 | Cell temperature measurement device, cell temperature measurement method, and cell production method |
| CN102468023A (en) * | 2010-11-12 | 2012-05-23 | 三星Sdi株式会社 | Protection circuit module including thermistor and secondary battery pack having the same |
| CN202676321U (en) * | 2012-07-17 | 2013-01-16 | 昆山雅森电子材料科技有限公司 | Lithium ion battery temperature sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758546A (en) * | 2014-12-19 | 2016-07-13 | 中国电子科技集团公司第十八研究所 | Fully-sealed hydrogen-nickel battery electrolyte internal temperature measurement method |
| CN110553751A (en) * | 2018-06-01 | 2019-12-10 | 深圳市科敏敏感元件科技有限公司 | Ultrathin temperature sensor and manufacturing method thereof |
| CN109632123A (en) * | 2018-12-07 | 2019-04-16 | 苏州长风航空电子有限公司 | A kind of flexible paste chip temperature sensor |
| CN112615073A (en) * | 2020-12-31 | 2021-04-06 | 上海捷新动力电池系统有限公司 | FFC temperature sampling structure in power battery pack and technological process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM456590U (en) | 2013-07-01 |
| CN103542955B (en) | 2016-08-03 |
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