CN103542955B - Lithium ion battery temperature inductor - Google Patents
Lithium ion battery temperature inductor Download PDFInfo
- Publication number
- CN103542955B CN103542955B CN201210246782.8A CN201210246782A CN103542955B CN 103542955 B CN103542955 B CN 103542955B CN 201210246782 A CN201210246782 A CN 201210246782A CN 103542955 B CN103542955 B CN 103542955B
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- China
- Prior art keywords
- wiring board
- flexible print
- print wiring
- lithium ion
- ion battery
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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
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Battery Mounting, Suspending (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of lithium ion battery temperature inductor, including flexible print wiring board and thermal resistance, thermal resistance is fixed and is electrically connected to flexible print wiring board, it is provided with two bridge formation wires, flexible print wiring board is connected conducting by two bridge formation wires with external meters, the lithium ion battery temperature inductor of the present invention can be used in detecting lithium ion battery each layer aluminium foil parlor temperature, thus obtain the instruction of accurate temperature in the whole charging and discharging cycle, the reliability of raising system work, and volume is little, internal without air-gap, thermal inertia is little, measurement delay is little, good mechanical property, resistance to shake, shock resistance, can bend, it is easily installed and service life is long.
Description
Technical field
The present invention relates to a kind of battery temperature induction apparatus for detecting lithium ion battery each layer aluminium foil parlor temperature.
Background technology
Lithium ion battery from 1991 come out since, due to have high voltage, high-energy-density, the advantage of high-specific-power and enjoy the favor of people, have been widely used for various portable electric appts at present.Along with the day of world energy sources is becoming tight, the continuous of international oil price is 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.Compared with lithium battery, lithium ion battery uses graphite cathode to instead of lithium metal, and safety is greatly improved, however mechanical shock, high temperature, overcharge etc. under the conditions of lithium ion battery be still likely to occur blast, combustion phenomena.On the one hand, lithium ion battery uses organic solution electrolyte, when battery is in and overcharges state, organic solvent easily produces irreversible oxidation Decomposition at positive electrode surface, along with the generation of a large amount of imflammable gas while releasing amount of heat, cause internal temperature of battery and pressure to steeply rise, thus bring blast, the danger of burning to battery.On the other hand, there is a series of potential exothermic reaction in inside lithium ion cell self, when battery in use causes internal temperature rise bigger because of the short circuit of a variety of causes inside and outside, is easily initiated.If by chemical reaction storage energy Li-Ion rechargeable battery because of external pressure etc. cause uncontrollable internal-response time, it may appear that because high temperature causes the precarious position of thermal runaway.This state is seriously possible on fire further.And, along with capacity constantly increases, namely along with the energy of storage is continuously increased, occur that the danger of this state is more and more higher.Therefore safety issue has become as one of key issue of lithium ion battery maximization.
Overcharging is one of safety problem of being in use likely to be encountered of lithium ion battery, especially during Li-ion batteries piles works.The guard method that overcharges of lithium ion battery at present mainly has physical method and chemical method.Physical method is mainly by introducing PTC resistor (PTC), using external monitoring devices, employing relief valve etc., and chemical method mainly improves from the internal material of battery.
Temperature monitoring is that lithium ion battery overcharges the most direct effective manner of protection.Lithium ion battery is when used aloned, and safety can be effectively ensured, but for the set of cells being applied in combination, situation will become more complicated, and set of cells will be ended because overcharging or excessively put the mismatch caused because of any of which one batteries.At present industry is only capable of detecting lithium battery bag external skin temperatures, each layer aluminium foil parlor temperature cannot Detection & Controling, and internal layer temperature is often higher than external skin temperatures.
Summary of the invention
In order to overcome drawbacks described above, the invention provides a kind of lithium ion battery temperature inductor, the lithium ion battery temperature inductor of the present invention can be used in detecting lithium ion battery each layer aluminium foil parlor temperature, thus obtain the instruction of accurate temperature in the whole charging and discharging cycle, improve the reliability of system work.
The present invention is to solve that its technical problem be the technical scheme is that
A kind of lithium ion battery temperature inductor, including flexible print wiring board and thermal resistance, described thermal resistance is fixed and is electrically connected to described flexible print wiring board, 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 includes that glue-free one side copper-clad base plate, coverlay and stiffening plate, described glue-free one side copper-clad base plate are folded between described coverlay and described stiffening plate.
Described glue-free one side copper-clad base plate is made up of one layer of Copper Foil and one layer of 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 that any one and the thickness in the heat curing-type coverlay including polyamide-imides coverlay and polyphenylene sulfide coverlay is between 5-8 micron.
If described stiffening plate is one layer of polyimide film or the dried layer polyimide film by resin bonding, and the thickness of stiffening plate is 3-9 mil.
Being 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 thermmohardening adhesion agent layer and thickness is 25-35 micron.
Described thermal resistance is metallic conductor.
Described two bridge formation wires are two parallel wires, and each wire appearance is coated with polythene material layer.
Weld between described thermal resistance with described flexible print wiring board and between described bridge formation wire and described flexible print wiring board by Pb-free solder and cover with black ink.
The invention has the beneficial effects as follows: the lithium ion battery temperature inductor of the present invention includes flexible print wiring board and thermal resistance, thermal resistance is fixed and is electrically connected to flexible print wiring board, it is provided with two bridge formation wires, flexible print wiring board is connected conducting by two bridge formation wires with external meters, the lithium ion battery temperature inductor of the present invention can be used in detecting lithium ion battery each layer aluminium foil parlor temperature, thus obtain the instruction of accurate temperature in the whole charging and discharging cycle, the reliability of raising system work, and volume is little, internal without air-gap, thermal inertia is little, measurement delay is little, good mechanical property, resistance to shake, shock resistance, can bend, it is easily installed and service life is long.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of the lithium ion battery temperature inductor of the present invention；
Fig. 2 is the cross section structure schematic diagram of the 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 the lithium ion battery temperature inductor of the present invention.
Detailed description of the invention
Below by way of particular specific embodiment illustrate the present invention embodiment, those skilled in the art can be understood advantages of the present invention and effect easily by content disclosed in the present specification.The present invention can also other different mode implement, i.e. carries out different amendments and change in without departing substantially from disclosed scope.
Embodiment: a kind of lithium ion battery temperature inductor, including flexible print wiring board 1 and thermal resistance 2, described thermal resistance is fixed and is electrically connected to described flexible print wiring board, is provided with two bridge formation wires 3, and described flexible print wiring board is connected conducting by described two bridge formation wires with external meters.
Described flexible print wiring board includes that glue-free one side copper-clad base plate, coverlay 13 and stiffening plate 14, described glue-free one side copper-clad base plate are folded between described coverlay and described stiffening plate.
Glue-free single sided copper clad substrate (2layer-S) in flexible print wiring board (FPC) structure, it at high temperature has superior dimensional stability, stable peel strength and splendid disturb Qu Xingneng, its structure includes one layer of Copper Foil 11 and one layer of liquid Kapton (PI) 12, wherein Copper Foil requires to choose calendering copper, thickness at below 12um, PI thickness at below 8um.The coverlay covering Copper Foil exposed section is the high temperature heat-resistant curable type thin film such as polyamide-imides (PAI) or polyphenylene sulfide (PPS), and thickness requirement is between 5 ~ 8um.Stiffening plate be thickness be the Kapton of 3 ~ 9mil, it is also possible to thickness is 1, the Kapton of 2mil collocation epoxy resin be combined into the stiffening plate that thickness is 3 ~ 9mil.The solid of stiffening plate laminating is thermosetting solid 15, and thickness is at 25 ~ 35um.
Thermal resistance be utilize material when variations in temperature, its resistance also with the feature changed to measure temperature.When change in resistance, work instrument just demonstrates the temperature value corresponding to resistance.Thermistor Temperature Measurement is that resistance value based on metallic conductor increases this characteristic and carries out thermometric with the increase of temperature.Thermal resistance is mostly made up of simple metal material, and the metal material as thermal resistance typically requires: the biggest and stable temperature coefficient, resistivity want big (under same sensitivity, reducing the size of sensor), have within the temperature range of using stable Chemical Physics performance, material replicability good, resistance value varies with temperature a value function relation (the most linear).What application was most at present is platinum and copper, additionally, have started to now use the materials such as nickel, manganese and rhodium to manufacture thermal resistance.Thermal resistance varies with temperature mainly by resistance value and changes this characteristic to measure temperature and the parameter relevant with temperature, requires that higher occasion is more applicable in temperature detecting precision.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 big, good linearity, stable performance, use temperature range width, handling ease that they have.Measure temperature range in-200 DEG C to+500 DEG C.
Two bridge formation wires are two parallel wires, are the bridge formation polyethylene wires that are coated with polythene material of appearance.
Thermal resistance collocation flexible print wiring board (FPC), one end is placed in inside battery, is connected with external meters by bridge formation wire, detects internal temperature of battery, works as over-charging of battery, when temperature rising reaches dangerous values, disconnects charging current.Each part requirement uses 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 lithium battery bag each layer aluminium foil parlor temperature, thus obtains the instruction of accurate temperature in the whole charging and discharging cycle, improves the reliability of system work.
Above-described embodiment is only the illustrative principle of the invention and effect thereof, not for limiting the present invention.The scope of the present invention, should be as listed by claims.
Claims (1)
1. a lithium ion battery temperature inductor, it is characterized in that: include flexible print wiring board and thermal resistance, described thermal resistance is fixed and is electrically connected to described flexible print wiring board, being provided with two bridge formation wires, described flexible print wiring board is connected conducting by described two bridge formation wires with external meters；
Described flexible print wiring board includes that glue-free one side copper-clad base plate, coverlay and stiffening plate, described glue-free one side copper-clad base plate are folded between described coverlay and described stiffening plate；
Described glue-free one side copper-clad base plate is made up of one layer of Copper Foil and one layer of 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 that any one and the thickness in the heat curing-type coverlay including polyamide-imides coverlay and polyphenylene sulfide coverlay is between 5-8 micron；
If described stiffening plate is one layer of polyimide film or the dried layer polyimide film by resin bonding, and the thickness of stiffening plate is 3-9 mil；
Being 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 thermmohardening adhesion agent layer and thickness is 25-35 micron；
Described thermal resistance is metallic conductor；
Described two bridge formation wires are two parallel wires, and each wire appearance is coated with polythene material layer；
Weld between described thermal resistance with described flexible print wiring board and between described bridge formation wire and described flexible print wiring board by Pb-free solder and cover 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 CN103542955A (en) | 2014-01-29 |
| CN103542955B true CN103542955B (en) | 2016-08-03 |
Family
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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) |
Families Citing this family (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 |
| CN112615073B (en) * | 2020-12-31 | 2023-05-26 | 上海捷新动力电池系统有限公司 | FFC temperature sampling structure in power battery pack and process flow thereof |
Citations (6)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5035428B2 (en) * | 2010-04-28 | 2012-09-26 | トヨタ自動車株式会社 | Battery temperature measuring device, battery temperature measuring method, battery manufacturing method |
-
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 (6)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103542955A (en) | 2014-01-29 |
| TWM456590U (en) | 2013-07-01 |
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