CN209264147U - A kind of temperature sensor network arragement construction of internal battery pack - Google Patents
A kind of temperature sensor network arragement construction of internal battery pack Download PDFInfo
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- CN209264147U CN209264147U CN201821328499.9U CN201821328499U CN209264147U CN 209264147 U CN209264147 U CN 209264147U CN 201821328499 U CN201821328499 U CN 201821328499U CN 209264147 U CN209264147 U CN 209264147U
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- temperature sensor
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- optical fiber
- battery pack
- battery cell
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Abstract
The utility model provides a kind of temperature sensor network arragement construction of internal battery pack, comprising: battery pack, temperature sensor, time delay optical fiber and demodulating equipment；The battery pack includes more pieces of battery cells, and the battery core in every piece of battery cell is internally provided with temperature sensor, is connected between the battery cell using time delay optical fiber, the temperature sensor is connected with demodulating equipment；The temperature sensor further includes optical fiber and capillary, and fiber grating is provided on the optical fiber, and the optical fiber penetrates inside the fixed battery core being wrapped in battery cell in one end in capillary, and the other end is pierced by battery cell and is connected with demodulating equipment；The demodulating equipment can launch modulating light pulse signal, and can go out its optical wavelength to reflected optical signal demodulation.The utility model has the beneficial effects that needing to monitor position inside battery core in battery cell is equipped with fiber grating, the temperature inside the battery core in battery cell can be monitored.
Description
Technical field
It is applied to the sensory field of inside battery monitoring the utility model relates to fiber grating more particularly to fiber grating exists
Internal battery pack network arrangement structure.
Background technique
With the extensive use of electric car, battery pack is widely used, and multiple batteries are integrated together
Battery capacity can be significantly promoted, volume is reduced.But the safety problem of battery always exists, and overheats, expands, explodes
It will cause some losses difficult to the appraisal and injury.Fiber Bragg grating sensor network is applied to the security monitoring field of battery
There are some cases, but existing technology is all the variation for the temperature and stress for monitoring outside batteries mostly at present, and
The case where overheating to battery core inside is not monitored.In practice for battery pack, inside the battery core of battery cell
Influence of the failure for entire battery pack efficiency be huge, it is therefore desirable to a kind of new monitor mode monitors in battery pack
The state of each battery core in portion.
Fiber-optic grating sensor is largely applied under particular surroundings, such as battery, oil-gas pipeline, oil exploration neck
Domain.In the sensor network of fiber grating, the most commonly used is wavelength division multiplexed networks and time division multiplex network.It is multiple based on wavelength-division
The interstitial content of optical fiber grating sensing network, sensing receives the influence of light source bandwidth and grating dynamic range, therefore
It is generally limited on the order of magnitude of dozens of.And the number based on time-multiplexed its network node of optical fiber grating sensing network can
To reach hundreds of thousands of, but spatial resolution is limited in meter level.
Utility model content
The purpose of this utility model is designed to provide a kind of temperature sensor network arragement construction of internal battery pack, uses
In solving the problems, such as that existing battery detection network is unable to monitor each battery core internal state.
The utility model provides a kind of temperature sensor network arragement construction of internal battery pack characterized by comprising
Battery pack, temperature sensor, time delay optical fiber and demodulating equipment；The battery pack includes more pieces of battery cells, every piece of battery
Battery core in monomer is internally provided with temperature sensor, is connected between the battery cell using time delay optical fiber, the temperature passes
Sensor is connected with demodulating equipment；
The temperature sensor further includes optical fiber and capillary, and fiber grating is provided on the optical fiber, and the optical fiber is worn
Enter inside the fixed battery core being wrapped in battery cell in one end in capillary, the other end is pierced by battery cell and demodulating equipment phase
Even；The demodulating equipment can launch modulating light pulse signal, and can go out its light wave to reflected optical signal demodulation
It is long.
Further, the temperature sensor inside the battery core is embedded in the process of battery core production.
Further, it is provided with multiple fiber gratings on the optical fiber, is equipped with multiple fiber gratings, institute inside the battery core
It states optical fiber to penetrate inside the battery core that one end in capillary is fixed in battery cell, be arranged by the way of wavelength-division multiplex,
The wavelength of i.e. the multiple fiber grating is different, and the other end is pierced by battery cell and is connected with demodulating equipment.
Further, it is provided with multiple fiber gratings on the optical fiber, is equipped with multiple fiber gratings, institute inside the battery core
It states optical fiber to penetrate inside the battery core that one end in capillary is fixed in battery cell, be arranged by the way of wavelength-division multiplex,
The wavelength of i.e. the multiple fiber grating is different, and the other end is pierced by battery cell and is connected with demodulating equipment.
Further, time delay optical fiber by the way of shape using arranging.
Further, the length of the time delay optical fiber is limited within 20m.
The utility model has the following beneficial effects:
A kind of temperature sensor network arragement construction of internal battery pack of the utility model, the battery core in battery cell
Inside needs to monitor position and is equipped with fiber grating, can be monitored to the temperature inside the battery core in battery cell；It is different
Time delay optical fiber is set between battery cell, the transducing signal of the battery core in different battery cells can be distinguished.
Detailed description of the invention
Fig. 1 is a kind of showing for temperature sensor network arragement construction of internal battery pack provided by the embodiment of the utility model
It is intended to.
Drawing reference numeral represents meaning are as follows: 1, battery core, 2, temperature sensor, and 3, optical fiber, 4, fiber grating, 5, time delay optical fiber,
6, capillary, 7, demodulating equipment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Such as Fig. 1, the utility model embodiment provides a kind of temperature sensor network arragement construction of internal battery pack, packet
It includes: battery pack, temperature sensor 2, time delay optical fiber 4 and demodulating equipment 7；The battery pack includes more pieces of battery cells, described every
Battery core 1 in piece battery cell is internally provided with temperature sensor 2, is connected between the battery cell using time delay optical fiber 5, institute
Temperature sensor 2 is stated to be connected with demodulating equipment 7；The temperature sensor 2 further includes optical fiber 5 and capillary 6, on the optical fiber 3
It is provided with fiber grating 4, the optical fiber 3 penetrates inside the battery core 1 that one end in capillary 6 is fixed in battery cell, separately
One end is pierced by battery cell and is connected with demodulating equipment 7；The demodulating equipment 7 can launch modulating light pulse signal, and can
Its optical wavelength is gone out to reflected optical signal demodulation.
The demodulating equipment 7 is the conventional modules in optical fiber sensing system, mainly includes DBR laser and photoelectrolysis
Adjust device.DBR laser issues laser signal, after laser signal is passed in optical fiber 3, by that can reflect the optical fiber when fiber grating 4
The laser signal of 4 corresponding wavelength of grating；Photoelectricity demodulator receives reflected laser signal, and issues with DBR laser
Laser signal compares, and thermometric can be completed according to center wavelength shift amount.When an optical fiber continuously inscribes multiple optical fiber light
When grid 4, the corresponding central wavelength of different fiber gratings 4 is different, and corresponding fiber grating 4 is determined by central wavelength, thus
Further determine that the transducing signal of the battery core 1 in corresponding battery cell distinguishes.
Such as Fig. 1, the fiber grating 4 inside battery core 1 in the battery cell is twined during the battery core 1 production
Around, it is placed at the point for needing to monitor.It is provided with multiple fiber gratings 4 on the optical fiber 3, is equipped with inside the battery core 1 more
A fiber grating 4, the optical fiber 3 penetrates inside the battery core 1 that one end in capillary 6 is fixed in battery cell, using wave
The mode of multiplexing is divided to arrange, i.e., the wavelength of the multiple fiber grating 4 is different, and the other end is pierced by battery cell and demodulation fills
6 are set to be connected, i.e., the wavelength of the multiple fiber grating 4 is different, by the different instructions difference fiber grating 4 of wavelength and
The location of its.The fiber grating 4 inside battery core 1 in the battery cell can be to the battery core 1 in battery cell inside
Temperature be monitored.Fiber grating 4 is uniformly wound in inside the battery core in battery cell as far as possible simultaneously, so as to whole
The heat distribution inside battery core 1 in a battery cell is monitored.
The time delay optical fiber 5 is rationally compact to be arranged between battery cell, and length is set up separately by reasonable demodulation section
Count between the battery core 1 that can closely be inserted into different battery cells, the time delay optical fiber 5 using by the way of shape into
Row arrangement, to reduce the volume of the arrangement of time delay optical fiber 3 to the greatest extent and reduce the complete loss of time delay optical fiber 5, the time delay optical fiber 5
Length is limited within 20m.The time delay optical fiber 5 can make to pass through reflected light between the battery core 1 in different battery cells
The pulse received time distinguishes.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of temperature sensor network arragement construction of internal battery pack characterized by comprising battery pack, temperature sensing
Device (2), time delay optical fiber (5) and demodulating equipment (7)；The battery pack includes more pieces of battery cells, in every piece of battery cell
Battery core (1) be internally provided with temperature sensor (2), between the battery cell using time delay optical fiber (5) be connected, the temperature
Sensor (2) is connected with demodulating equipment (7)；
The temperature sensor (2) further includes optical fiber (3) and capillary (6), is provided with fiber grating (4) on the optical fiber (3),
The optical fiber (3) penetrates fixed battery core (1) inside being wrapped in battery cell in one end in capillary (6), and the other end is pierced by electricity
Pond monomer is connected with demodulating equipment (7)；The demodulating equipment (7) can launch modulating light pulse signal, and can be to reflection
Optical signal demodulation back goes out its optical wavelength.
2. a kind of temperature sensor network arragement construction of internal battery pack as described in claim 1, it is characterised in that: described
The internal temperature sensor (2) of battery core (1) is wound in the process of the battery core (1) production.
3. a kind of temperature sensor network arragement construction of internal battery pack as described in claim 1, it is characterised in that: described
It is provided on optical fiber (3) multiple fiber gratings (4), is equipped with multiple fiber gratings (4) inside the battery core (1), the optical fiber (3)
It is internal to penetrate the battery core (1) that one end in capillary (6) is fixed in battery cell, is arranged by the way of wavelength-division multiplex,
The wavelength of i.e. the multiple fiber grating (4) is different, and the other end is pierced by battery cell and is connected with demodulating equipment (7).
4. a kind of temperature sensor network arragement construction of internal battery pack as described in claim 1, it is characterised in that: described
Time delay optical fiber (5) by the way of shape using arranging.
5. a kind of temperature sensor network arragement construction of internal battery pack as described in claim 1, it is characterised in that: described
The length of time delay optical fiber (5) is limited within 20m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821328499.9U CN209264147U (en) | 2018-08-13 | 2018-08-13 | A kind of temperature sensor network arragement construction of internal battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821328499.9U CN209264147U (en) | 2018-08-13 | 2018-08-13 | A kind of temperature sensor network arragement construction of internal battery pack |
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| CN209264147U true CN209264147U (en) | 2019-08-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954243A (en) * | 2019-12-19 | 2020-04-03 | 北京理工大学 | Battery monomer temperature acquisition system |
| CN115876232A (en) * | 2021-12-29 | 2023-03-31 | 宁德时代新能源科技股份有限公司 | Battery cell and optical fiber for same |
-
2018
- 2018-08-13 CN CN201821328499.9U patent/CN209264147U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954243A (en) * | 2019-12-19 | 2020-04-03 | 北京理工大学 | Battery monomer temperature acquisition system |
| CN110954243B (en) * | 2019-12-19 | 2020-09-11 | 北京理工大学 | Battery monomer temperature acquisition system |
| CN115876232A (en) * | 2021-12-29 | 2023-03-31 | 宁德时代新能源科技股份有限公司 | Battery cell and optical fiber for same |
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