CN202869693U - Battery temperature multi-point measuring apparatus - Google Patents
Battery temperature multi-point measuring apparatus Download PDFInfo
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- CN202869693U CN202869693U CN201220561977.7U CN201220561977U CN202869693U CN 202869693 U CN202869693 U CN 202869693U CN 201220561977 U CN201220561977 U CN 201220561977U CN 202869693 U CN202869693 U CN 202869693U
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Abstract
The utility model relates to a battery temperature multi-point measuring apparatus, which can detect the temperature of a battery formed by a plurality of single cells, and is characterized by comprising a plurality of fluorescent probes, a plurality of front end transmission fibers, an optical diverter switch, a light splitting structure, a photoelectric detector, rear end transmission fibers and a light source, wherein the end portion of each fluorescent probe is prepared by a fluorescent material and contacted with one single cell, each fluorescent probe is connected with one front end transmission fiber, the plurality of front end transmission fibers are connected with the optical diverter switch, each front end transmission fiber corresponds to one branch of the optical diverter switch, the optical diverter switch is connected with the light splitting structure through one rear end transmission fiber, the light splitting structure is connected with the photoelectric detector through a further one rear end transmission fiber, and the light splitting structure is connected with the light source through a third rear end transmission fiber.
Description
Technical field
The utility model utility model relates to the battery management field tests, particularly a kind of can the Real Time Monitoring electric battery in the Multi point measuring apparatus of each cell temperature.
Background technology
Along with the rapid lifting of economy and technical merit, various powerful consumer electronics products emerge in large numbers day by day, such as smart mobile phone, panel computer, video camera and amusement player etc.The several functions such as these electronic products often require to possess mobile communication, internet access, Entertainment and the shooting of taking pictures must guarantee that simultaneously volume is little, lightweight, and shape is various attractive in appearance.Under the trend of the lightening design of product, the energy supply of electronic product often becomes a technology neck bottle.In order to satisfy consumer electronics product to the requirement of compact power, various novel storage batteries arise at the historic moment, for example Novel nickel-hydrogen battery and lithium ion battery.Novel battery is high with operating voltage, power density and energy density are high, discharge and recharge life-span length, memory-less effect, the good characteristic such as pollution-free are subject to extensive welcome.When providing high-capacity dynamical for all kinds of mobile products, novel battery has also brought many potential safety hazards, such as the battery of mobile phone explosion accident of the end that appears in the newspapers repeatly.
Temperature is all influential to the various aspects of performance of lithium ion battery, comprise working condition, cycle efficieny, capacity, power, security, reliability and the life-span etc. of electro-chemical systems, and then may have influence on performance, reliability and the security etc. of whole electronic system.Battery temperature affects the efficiency for charge-discharge of battery, is the available power of system evaluation battery and judges the key parameter whether battery is used safely.If the temperature of battery surpasses certain value, might cause the irrecoverability of battery to destroy.Temperature contrast between the electric battery causes unbalanced between the batteries monomer, thereby causes the reduction of battery life.Therefore, be necessary to detect in real time the temperature variation of each cell in the battery pack.
Traditional battery temperature is measured mainly based on thermistor, thermopair and infrared imaging.The thermocouple temperature measurement technology maturation is used historical length, and type of merchandize is many, is some temperature survey means the most frequently used in the battery research field, such as patent 201110041121.7.Thermistor temperature detecting also simply is used widely because of with low cost, support circuit, such as patent 200410088663.X and 200980134049.3.Along with the development of integrated circuit and the reduction of cost, it is more and more universal that infrared imagery technique also becomes, and especially occupied leading position in the face thermometric.But said method has it significantly not enough in Study on Li-ion batteries using and application.Thermopair need to use metal wire, produces easily short circuit risk, and the metal material that uses is often stone, has brought a lot of inconvenience for installation and use.The thermistor method is more suitable for measuring the temperature of battery management system control section circuit board.When being applied to battery surface or lug temperature survey, and thermopair is similar, need to go between as the two poles of the earth than long lead.Infrared imagery technique uses the infrared signal of object emission to measure, be subject to easily air and disturb, precision is inadequate, temperature that can only coarse measurement body surface, and also need to do correction for different testee emissivity when using, the follow-up data work for the treatment of is numerous and diverse.In order to overcome above-mentioned deficiency, the utility model is used the fluorescence fiber temperature measurement technology, realize temperature accurately and fast with security measurement.
The utility model content
For technological deficiency of the prior art, the utility model provides a kind of battery pack temperature Multi point measuring apparatus, the temperature of the electric battery that detection is comprised of a plurality of cells, it is characterized in that, described battery pack temperature Multi point measuring apparatus comprises: the multichannel fluorescent probe, multichannel front end Transmission Fibers, optical switch, beam-splitting structure, photoelectric detector, rear end Transmission Fibers and light source, the end on each road in the multichannel fluorescent probe has fluorescent material and contacts with a cell, each road fluorescent probe connects one road front end Transmission Fibers, multichannel front end Transmission Fibers is connected with optical switch, a branch road in the corresponding optical switch of each road front end Transmission Fibers, optical switch and beam-splitting structure, beam-splitting structure and photoelectric detector, be connected by the rear end Transmission Fibers between beam-splitting structure and the light source; Light source produces light pulse, enter optical switch via rear end Transmission Fibers and beam-splitting structure, optical switch is opened a branch road, light pulse is via this branch road, one road front end Transmission Fibers arrives the fluorescent material of the end of a road corresponding fluorescent probe, fluorescent material excites the generation exciting light by light pulse, exciting light is via described one road fluorescent probe, described one road front end Transmission Fibers and optical switch enter beam-splitting structure, beam-splitting structure reflects described exciting light and enters photoelectric detector via the rear end Transmission Fibers, and photoelectric detector detects the time constant of described exciting light.
Preferably, the duration of described light pulse is 5 milliseconds.
Preferably, described electric battery also comprises holding circuit and discharges and recharges control module.
Preferably, described fluorescent probe comprises: optical cement, fluorescent material, protective sleeve, and wherein, described fluorescent material is connected with described multichannel front end Transmission Fibers by optical cement, and described protective sleeve is the film of a fluorescent material.
Preferably, described optical switch has single rear port and a plurality of front port, wherein, a front port and described rear port form a described branch road, and described optical switch possesses the two-way signaling transfer function and controls described battery pack temperature Multi point measuring apparatus and circulates successively and measure the temperature of each cell.
Preferably, described beam-splitting structure comprises: light splitting piece and optical lens.
Preferably, described light source adopts ultraviolet light-emitting diode.
The utility model is by utilizing the fluorescence fiber temperature measurement method to realize the insulation measurement of batteries monomer battery temperature, and the security performance that is conducive to battery promotes.Adopt simultaneously the handoff functionality of patrolling and examining of Multichannel photoswitch, use beam-splitting structure, photoelectric detector, rear end Transmission Fibers and light source to realize the multichannel measurement effect as the back-end processing assembly.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present utility model will become:
Fig. 1 illustrates according to the first embodiment of the present utility model, a kind of structural representation of the battery pack temperature Multi point measuring apparatus based on fluorescence temperature sensor.
Embodiment
The utility model is used the fluorescence fiber temperature measurement technology, realize temperature accurately and fast with security measurement.Fluorescent optical fiber temperature sensor is based on that the material behavior of rare-earth fluorescent material realizes, after some rare-earth fluorescent material is subjected to the ultraviolet ray irradiation and excites, launches line-spectra in visible spectrum, i.e. fluorescence and twilight sunset thereof.The decay time constant of phosphorescence afterglow is the single-valued function of temperature, and typical temperature is higher, and time constant is less.As long as record the value of time constant, just can obtain temperature.The great advantage of its this method is that dut temperature only depends on the time constant of fluorescent material, and irrelevant with its dependent variable of device, does not affect measurement result such as the variation of the variation of the intensity of light source, transfer efficiency, degree of coupling etc.In the normal temperature scope, general sensor can only adopt the metering system of contact, and fluorescent optical fiber temperature sensor both can adopt the metering system of contact, also can adopt contactless mode, but and long-distance transmissions, it is on-the-spot to make the photoelectric device of sensor break away from thermometric, avoids rugged surroundings.Owing to adopt full optical fiber micro probe, without metal material, have completely electrical insulating property, be not subjected to the impact of high pressure, strong-electromagnetic field.Fluorescent optical fiber temperature sensor is not limited only to the orientation survey of body surface, and its probe can also insert in the solid matter, immerse in the liquid or in the introducing equipment, arrives the specific region.
Particularly, the utility model provides a kind of electric battery multiple spot, real time temp measurer for solving its technical matters, comprises multichannel fluorescent probe 3, multichannel front end Transmission Fibers 4a, optical switch 5, beam-splitting structure 6, photoelectric detector 7, rear end Transmission Fibers 4b and light source 8.
Multichannel fluorescent probe 3 is comprised of optical cement, fluorescent material, protective sleeve three parts.Multichannel fluorescent probe 3 is connected with multichannel front end Transmission Fibers 4a.Wherein, Transmission Fibers is the medium of light transmission, and the Transmission Fibers end face also is the supporter of fluorescent material simultaneously.Present embodiment preferably adopts silica fibre as Transmission Fibers.Silica fibre not only raw material resources is abundant, stable performance, and also tensile strength is very high, is easy to bending, and loss is minimum in the normal temperature district, and has covering and protective seam, so that light signal is not subject to the extraneous factor impacts such as impurity light in transmission course.The performances such as optical cement has good light transmission and low-refraction as the connector of fluorescent material and multichannel front end Transmission Fibers 4a, not only can see through exciting light, and can see through fluorescence, and has resistance to chemical attack, and is waterproof and dampproof.Protective layer material selects teflon to form a kind of film with it at fluorescent material and outside of fiber, in order to better fluorescent powder is fixed on the Transmission Fibers end.The utility model is applicable to different rare earth element and is connected from different multichannel front end Transmission Fibers 4a as the multichannel fluorescent probe 3 of fluorescent material, is not limited to method mentioned above.
Beam-splitting structure 6 mainly partly is comprised of light splitting piece and optical lens etc.Light source 8 adopts ultraviolet light-emitting diode, the ultraviolet exciting light that ultraviolet light-emitting diode is sent switches through optical switch 5 to the light splitting piece total reflection by rear end Transmission Fibers 4b and enters multichannel front end Transmission Fibers 4a and transfer to multichannel fluorescent probe 3, the exciting light excitation fluorescent material, make fluorescent material inspire fluorescence, the fluorescence that is excited out returns by same multichannel fluorescent probe 3,4a enters light splitting piece via optical switch 5 by multichannel front end Transmission Fibers, focuses on the photoelectric commutator that is transferred in the photoelectric detector 7 by rear end Transmission Fibers 4b again by optical lens after the transmission and carries out opto-electronic conversion.Choosing of light splitting piece wanted to make the ultraviolet light total reflection, and the fluorescence that fluorescent material is sent is transmitted on the optical lens, and can be filled into other impurity light.Because emission angle was larger when optical radiation was exported from optical fiber one end, used an optical lens with bigger numerical aperture and shorter focal length for this reason, so that the light signal of the overwhelming majority can both obtain utilizing.
The fluorescence fiber temperature measurement method of utilizing the utility model has realized the insulation measurement of batteries monomer battery temperature, and the security performance that is conducive to battery promotes.Adopt simultaneously the handoff functionality of patrolling and examining of Multichannel photoswitch, use one road back end processing module to realize the multichannel measurement effect.
For the ease of understanding, below in conjunction with accompanying drawing and example the utility model utility model is described in further details:
As shown in Figure 1, its battery pack temperature multimetering system architecture that shows the electric battery 1 that formed by a plurality of cells 2, formed by multichannel fluorescent probe 3, multichannel front end Transmission Fibers 4a, optical switch 5, beam-splitting structure 6, photoelectric detector 7, rear end Transmission Fibers 4b and light source 8.Electric battery 1 comprises the above cell of two joints, such as nickel-cadmium battery, Ni-MH battery, lithium ion battery, lithium polymer battery etc.Can for the small-capacity cells of consumer electronics product, also can be the electrokinetic cell that is applicable to electrical equipment both.Outside the electric battery 1 demonomerization battery, also with the holding circuit of necessity with discharge and recharge control module and be connected.Suppose that certain need to measure the temperature value of cell N constantly, preferably, make the certain wavelength light pulse of light source 8 emissions by a light source control unit, continue the short period, for example 5 milliseconds.Optical switch 5 control modules produce control signal simultaneously, so that the photoswitch corresponding with cell N fluorescence temperature sensor front end opened.Light pulse enters optics change-over switch 5 through beam-splitting structure is laggard, and light pulse reaches the multichannel fluorescent probe 3 fluorescent powder places that contact with battery N after through optical switch 5 output ports.Rare earth fluorescent powder material excites generation fluorescence, arrives beam-splitting structure through optical switch 5 in the other direction along incident light, enters photoelectric detector 7 by spectroscope and calculates fluorescence lifetime and obtain cell surface temperature.When needs were measured another one cell temperature, said process was similar, and just optical switch control signal is different.For co-ordination, light source control signal and optical switch control signal must be synchronous, and the battery identification of record measured temperature, are convenient to data storage and subsequent treatment.
More than specific embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present utility model.
Claims (7)
1. battery pack temperature Multi point measuring apparatus, the temperature of the electric battery that detection is comprised of a plurality of cells, it is characterized in that, described battery pack temperature Multi point measuring apparatus comprises: the multichannel fluorescent probe, multichannel front end Transmission Fibers, optical switch, beam-splitting structure, photoelectric detector, rear end Transmission Fibers and light source, the end on each road in the multichannel fluorescent probe has fluorescent material and contacts with a cell, each road fluorescent probe connects one road front end Transmission Fibers, multichannel front end Transmission Fibers is connected with optical switch, a branch road in the corresponding optical switch of each road front end Transmission Fibers, optical switch and beam-splitting structure, beam-splitting structure and photoelectric detector, be connected by the rear end Transmission Fibers between beam-splitting structure and the light source;
Light source produces light pulse, enter optical switch via rear end Transmission Fibers and beam-splitting structure, optical switch is opened a branch road, light pulse is via this branch road, one road front end Transmission Fibers arrives the fluorescent material of the end of a road corresponding fluorescent probe, fluorescent material excites the generation exciting light by light pulse, exciting light is via described one road fluorescent probe, described one road front end Transmission Fibers and optical switch enter beam-splitting structure, beam-splitting structure reflects described exciting light and enters photoelectric detector via the rear end Transmission Fibers, and photoelectric detector detects the time constant of described exciting light.
2. battery pack temperature Multi point measuring apparatus according to claim 1 is characterized in that, the duration of described light pulse is 5 milliseconds.
3. battery pack temperature Multi point measuring apparatus according to claim 1 is characterized in that, described electric battery also comprises holding circuit and discharges and recharges control module.
4. battery pack temperature Multi point measuring apparatus according to claim 1; it is characterized in that; described fluorescent probe comprises: optical cement, fluorescent material, protective sleeve; wherein; described fluorescent material is connected with described multichannel front end Transmission Fibers by optical cement, and described protective sleeve is the film of a fluorescent material.
5. battery pack temperature Multi point measuring apparatus according to claim 1, it is characterized in that, described optical switch has single rear port and a plurality of front port, wherein, a front port and described rear port form a described branch road, and described optical switch possesses the two-way signaling transfer function and controls described battery pack temperature Multi point measuring apparatus and circulates successively and measure the temperature of each cell.
6. battery pack temperature Multi point measuring apparatus according to claim 1 is characterized in that, described beam-splitting structure comprises: light splitting piece and optical lens.
7. battery pack temperature Multi point measuring apparatus according to claim 1 is characterized in that, described light source adopts ultraviolet light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561977.7U CN202869693U (en) | 2012-10-30 | 2012-10-30 | Battery temperature multi-point measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561977.7U CN202869693U (en) | 2012-10-30 | 2012-10-30 | Battery temperature multi-point measuring apparatus |
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| CN202869693U true CN202869693U (en) | 2013-04-10 |
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| CN201220561977.7U Expired - Fee Related CN202869693U (en) | 2012-10-30 | 2012-10-30 | Battery temperature multi-point measuring apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261005A (en) * | 2019-07-29 | 2019-09-20 | 南昌航空大学 | A kind of fiber optic network new energy battery temperature monitoring system |
| CN113125039A (en) * | 2021-04-25 | 2021-07-16 | 哈尔滨古宝科技有限公司 | Method for testing internal temperature of battery based on up-conversion fluorescent nano material |
-
2012
- 2012-10-30 CN CN201220561977.7U patent/CN202869693U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261005A (en) * | 2019-07-29 | 2019-09-20 | 南昌航空大学 | A kind of fiber optic network new energy battery temperature monitoring system |
| CN113125039A (en) * | 2021-04-25 | 2021-07-16 | 哈尔滨古宝科技有限公司 | Method for testing internal temperature of battery based on up-conversion fluorescent nano material |
| CN113125039B (en) * | 2021-04-25 | 2023-10-31 | 哈尔滨古宝科技有限公司 | Method for testing internal temperature of battery based on up-conversion fluorescent nano material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151030 |
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| EXPY | Termination of patent right or utility model |