Battery box for presetting optical fiber sensor and optical fiber sensor arrangement method

Abstract

The invention discloses a battery box for presetting an optical fiber sensor and an optical fiber sensor arrangement method. The battery box for presetting the optical fiber sensor comprises a box body for placing a battery; a groove arranged along the box body and used for installing an optical cable; the optical cable is arranged in the groove in a penetrating manner and is connected with an optical fiber sensor for detecting the battery; and the pushing module is arranged on the box body and is used for fixing the optical fiber sensor on a detected surface through elastic force. The optical fiber sensor laying method is based on the battery box for presetting the optical fiber sensor. The groove is formed in the box body to increase the space, and the optical cable and the optical fiber sensor are installed in the space, so that the optical cable does not need to be stripped from the armor layer, the compression resistance and the tension resistance of the optical cable in the using process are better, and the risk that the optical fiber is damaged is greatly reduced; and the optical fiber sensor and the optical cable are integrally arranged, so that the use is safer. And intervention in the process of assembling the battery cells into the battery pack is not needed, so that the practicability is better.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, specifically to a battery box for pre-installing fiber optic sensors and a method for deploying the fiber optic sensors. Background Technology

[0002] As the core energy storage unit in electric vehicles, energy storage power stations, and other fields, the safety and performance of batteries are of paramount importance. However, the electrochemical reactions during battery pack charging and discharging can easily trigger abnormal temperatures, potentially leading to thermal runaway or even explosions, seriously threatening life and property safety and hindering industrial development. Traditional electronic sensor monitoring suffers from poor anti-interference capabilities, limitations in single-point measurement, and complex wiring, making it difficult to meet the needs of accurate monitoring. Fiber optic sensing technology, with its advantages of anti-electromagnetic interference, distributed measurement, and resistance to high temperatures and humidity, provides an innovative solution for achieving comprehensive and highly reliable monitoring of battery packs.

[0003] The monitoring quality of fiber optic sensing is closely related to the coupling of the fiber optic battery. However, in order to ensure high-quality fiber optic monitoring data, the optical cable used for battery pack monitoring is not designed with a thick armor layer or other protective layer for compression and tension resistance. Therefore, the coupling between the optical cable and the battery has the following problems: a) high risk of fiber optic damage; b) complex and difficult implementation process. Summary of the Invention

[0004] The technical problem to be solved by this invention is that when existing optical fibers are used for battery testing, the risk of fiber damage is high, and the implementation process is complex and difficult. The purpose is to provide a battery box for pre-installing optical fiber sensors and a method for deploying optical fiber sensors to solve the above-mentioned problems.

[0005] This invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a battery box for pre-installing an optical fiber sensor, comprising:

[0007] The housing, which is used to hold the batteries;

[0008] The recesses along the enclosure are for installing optical cables;

[0009] An optical cable threaded through a groove, with an optical fiber sensor connected to it for detecting the battery; and

[0010] The push-fit module installed on the housing uses elasticity to fix the fiber optic sensor to the surface being measured.

[0011] In one possible design, the groove extends along the surface of the housing into the housing and / or out of the housing until the groove covers at least all the batteries;

[0012] Accordingly, when the groove extends to the inside and outside of the box, the box is provided with connecting holes for connecting the inner and outer grooves.

[0013] In one possible design, the groove is constructed as a continuous channel running from one end to the other, or at least one partition block is provided to make the groove discontinuous.

[0014] In one possible design, when the groove is bent, the minimum radius of curvature of the groove is greater than the minimum radius of curvature of the optical cable.

[0015] In one possible design, the size of the groove is larger than the outer diameter of the optical cable, and correspondingly, when the optical cable is installed in the groove, a gap is left between the groove and the optical cable.

[0016] In one possible design, the push-abutment module includes a fixed plate and an elastic element; the fixed plate is slidably disposed on a groove, and correspondingly, the groove is provided with an inner groove for mounting the fixed plate; the two ends of the elastic element are respectively connected to the fixed plate and the inner groove.

[0017] In one possible design, let the depth of the groove be H, the width of the groove be W, the diameter of the fiber optic sensor be D, the thickness of the fixing plate be h, and the width of the fixing plate be w, where H = (2-5)D + h, W = 1.1 - 3w, and w = 1.1 - 1.5D.

[0018] In one possible design, the fixing plate is made of a high-rigidity plate, and the surface of the fixing surface is provided with an arc surface adapted to the fiber optic sensor.

[0019] When the elastic element is at its maximum length, the fixing plate portion is located inside the groove, and the optical cable portion is located outside the groove; and the elastic force of the elastic element is less than 10N.

[0020] In one possible design, the enclosure is equipped with fiber optic patch cords, fiber optic quick connectors, and demodulation equipment. The optical cable is connected to the fiber optic sensor and demodulation equipment respectively through the fiber optic patch cords and fiber optic quick connectors.

[0021] Secondly, the present invention provides a fiber optic sensor deployment method based on the aforementioned battery box for pre-installing fiber optic sensors, comprising the following steps:

[0022] Fiber optic cable selection: Select the fiber optic cable to be used based on the temperature detection scenario or stress detection scenario;

[0023] Adhesive selection: Choose the adhesive based on the temperature detection scenario or stress detection scenario;

[0024] Preparation: Wipe the outer sheath, grooves, and fixing plate of the optical cable with alcohol and let it air dry; lightly sand the outer sheath of the optical cable with fine sandpaper;

[0025] One-time glue application: Mark the fiber optic sensor deployment location; place the enclosure horizontally; apply glue, but do not apply glue to the sides of the marked location;

[0026] Fiber optic cable placement: Place the fiber optic cable flat in the groove according to the markings and wait for the adhesive to cure;

[0027] Secondary adhesive application: Apply adhesive to the surface of the optical cable and place the battery inside the box; wait for the adhesive to cure; fused fiber optic patch cords to both ends of the optical cable and connected them to the fiber optic quick connectors inside the box.

[0028] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0029] By creating recesses in the housing to add extra space, the optical cable and fiber optic sensor can be installed. This eliminates the need to strip the protective layers such as armor from the optical cable, resulting in better compressive and tensile strength during use and significantly reducing the risk of fiber damage. Similarly, the integrated design of the fiber optic sensor and cable enhances safety. Furthermore, it eliminates the need for intervention in the battery cell assembly process, making it more practical. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0031] Figure 1 This is a schematic diagram of a battery box for pre-installing fiber optic sensors.

[0032] Figure 2 for Figure 1 A partially enlarged structural diagram.

[0033] Figure 3 This is a structural diagram of the push-fit module.

[0034] The attached diagram shows the markings and corresponding component names:

[0035] 1. Cabinet; 2. Groove; 201. Inner Groove; 3. Optical Cable; 4. Push-back Module; 401. Fixing Plate; 402. Elastic Component; 5. Fiber Optic Sensor; 6. Fiber Optic Patch Cord; 7. Fiber Optic Quick Connector; 8. Demodulation Equipment. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0037] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0038] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] In the description of this invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0040] Example:

[0041] like Figures 1-3 As shown, in a first aspect, the present invention provides a battery box for pre-installing an optical fiber sensor, comprising:

[0042] Box 1, which is used to house the battery;

[0043] A groove 2 is provided along the housing 1, and the groove 2 is used to install the optical cable 3;

[0044] An optical cable 3 is threaded through the groove 2, and an optical fiber sensor 5 for detecting the battery is connected to the optical cable 3; and

[0045] The push-fit module 4 is installed on the housing 1. The push-fit module 4 fixes the fiber optic sensor 5 to the surface being measured by elastic force.

[0046] By creating a groove 2 on the housing 1 to increase additional space, the optical cable 3 and the fiber optic sensor 5 are installed in this space. This eliminates the need to strip the armor layer and other protective layers from the optical cable 3, resulting in better compressive and tensile strength during use and greatly reducing the risk of fiber damage. Similarly, the fiber optic sensor 5 is integrated with the optical cable 3, making its use safer.

[0047] It is worth noting that the groove 2 can be set at any suitable position on the housing 1, and correspondingly, the optical cable 3 extends along the groove 2 to any suitable position on the housing 1. Based on this, the optical cable 3 is distributed along the battery coverage area to facilitate the installation of the fiber optic sensor 5 at the optimal detection point, thereby accurately and effectively detecting the state inside the housing 1. At the same time, the extension path of the groove 2 can be flexible and diverse, so the groove 2, optical cable 3, and fiber optic sensor 5 have a variety of implementation schemes to adapt to different housing 1 structures, thus improving versatility and practicality.

[0048] Furthermore, a push-fit module 4 is also provided for the fiber optic sensor 5. The push-fit module 4 fixes the fiber optic sensor 5 with elasticity to avoid the fiber optic sensor 5 from making hard contact with the battery surface. This ensures the safety of the fiber optic sensor 5 while ensuring that the fiber optic sensor 5 is always in contact with the battery surface, so as to realize the efficient and high-precision detection of battery pack temperature, vibration and strain by the fiber optic sensor 5.

[0049] When using the battery box for pre-installing fiber optic sensors, the path of the groove 2 is designed and processed according to the structure of the box 1 and the layout of the battery pack; then the optical cable 3 is placed in the groove 2 so that the optical cable 3 is laid along the groove 2 on the box 1; while designing the groove 2, the placement point of the fiber optic sensor 5 is selected. After the optical cable 3 is laid, the fiber optic sensor 5 is installed at the placement point so that the fiber optic sensor 5 is connected to the optical cable 3.

[0050] It is easy to understand that the fiber optic sensor 5 can be selected from FBG sensors, distributed fiber optic sensors 5, or any other suitable existing models, with a wide range of choices to adapt to different working conditions.

[0051] In one possible implementation, the groove 2 extends along the surface of the housing 1 into the housing 1 and / or out of the housing 1 until the groove 2 covers at least all the batteries;

[0052] Accordingly, when the groove 2 extends to the inside and outside of the box body 1, the box body 1 is provided with a connecting hole for connecting the inner and outer grooves 2.

[0053] Based on the above design scheme, the layout of the groove 2 takes into account both the needs of battery detection and the needs of optical cable 3. While covering all batteries, the groove 2 can be distributed at any position in the box 1. The layout scheme of the groove 2 is flexible and diverse, and has good practicality while realizing battery detection.

[0054] It is easy to understand that the connection hole is opened on the box 1 so that the two parts of the groove 2 located inside and outside the box 1 can be connected, and the size of the connection hole is adapted to the optical cable 3.

[0055] It is easy to understand that the groove 2 can be manufactured simultaneously with the production of the box body 1, or it can be additionally processed on the finished box body 1.

[0056] Optionally, the cross-section of the groove 2 can be rectangular, square, semi-circular or other suitable shapes, which can be selected by those skilled in the art according to the actual working conditions.

[0057] Optionally, such as Figure 1 As shown, the groove 2 forms an "S" path on the bottom surface of the box 1 and an "I" path on the side plate of the box 1.

[0058] In one possible implementation, the groove 2 is constructed as a continuous groove extending from one end to the other, or at least one partition block is provided to make the groove 2 discontinuous. Based on the above design, the continuity of the groove 2 can be selected according to the actual working conditions. For example, when the groove 2 is on the same surface of the housing 1, the groove 2 is continuous; when the groove 2 is on different surfaces of the housing 1, the grooves 2 on the different surfaces are discontinuous. Alternatively, those skilled in the art can select according to the actual working conditions to ensure the service life of the optical cable 3 and the fiber optic sensor 5 while achieving better detection results.

[0059] In one possible implementation, when the groove 2 is bent, the minimum radius of curvature of the groove 2 is greater than the minimum radius of curvature of the optical cable 3. Based on the above design scheme, it is ensured that the optical cable 3 can be effectively installed in the groove 2, avoiding excessive bending of the optical cable 3, significantly reducing the loss of optical signal during transmission, and ensuring stable and reliable signal transmission.

[0060] In one possible implementation, the size of the groove 2 is larger than the outer diameter of the optical cable 3. Accordingly, when the optical cable 3 is installed in the groove 2, a gap is left between the groove 2 and the optical cable 3. Based on the above design, during the installation of the optical cable 3, the gap provides redundancy to facilitate the rapid installation of the optical cable 3; after the optical cable 3 is installed, the gap provides installation space to facilitate the fixation of the optical cable 3.

[0061] In one possible implementation, the push-abutment module 4 includes a fixed plate 401 and an elastic element 402; the fixed plate 401 is slidably disposed on the groove 2, and correspondingly, the groove 2 is provided with an inner groove 201 for mounting the fixed plate 401; the two ends of the elastic element 402 are respectively connected to the fixed plate 401 and the inner groove 201.

[0062] Based on the above design, the fiber optic sensor 5 abuts against the fixing plate 401. When the battery pack is placed inside the housing 1, the fiber optic sensor 5, the fixing plate 401, and the elastic element 402 are all compressed. The elastic element 402 contracts and creates space, allowing the fiber optic sensor 5 and the fixing plate 401 to retract appropriately, preventing the battery pack from damaging the fiber optic sensor 5. Simultaneously, the elastic force provided by the elastic element 402 ensures that the fiber optic sensor 5 presses firmly against the outer surface of the battery pack, ensuring that the fiber optic sensor 5 can effectively detect the battery. Furthermore, the elastic element 402 can be any suitable existing spring, offering a wide range of choices and good practicality.

[0063] In one possible implementation, let the depth of the groove 201 be H, the width of the groove 201 be W, the diameter of the fiber optic sensor 5 be D, the thickness of the fixing plate 401 be h, and the width of the fixing plate 401 be w, where H = (2-5)D + h, W = 1.1 - 3w, and w = 1.1 - 1.5D.

[0064] Based on the above design scheme, the size range of the inner groove 201, the fixing plate 401 and the fiber optic sensor 5 is determined by the above formula, thereby providing data support for the manufacturing of the inner groove 201, the production of the fixing plate 401 and the selection of the fiber optic sensor 5.

[0065] In one possible implementation, the fixing plate 401 is made of a high-rigidity plate, and the surface of the fixing surface is provided with an arc surface adapted to the fiber optic sensor 5. Based on the above design, the fixing plate 401 can be made of any suitable material such as ABS (Acrylonitrile Butadiene Styrene), aluminum, etc., and the arc surface increases its contact area with the fiber optic sensor 5, thereby better fixing the fiber optic sensor 5.

[0066] In one possible implementation, when the elastic element 402 is at its maximum length, the fixing plate 401 is partially located inside the inner groove 201, and the optical cable 3 is partially located outside the groove 2; and the elastic force of the elastic element 402 is less than 10N. Based on the above design, the length of the elastic element 402 ensures that the fixing plate 401 is always partially located in the inner groove 201, thus preventing the fixing plate 401 from dislodging from the inner groove 201 and ensuring that the inner groove 201 can always guide the movement direction of the fixing plate 401. Simultaneously, the elastic force of the elastic element 402 prevents excessive pressure on the fiber optic sensor 5, thus avoiding damage to the fiber optic sensor 5.

[0067] In addition, flexible fillers such as sponge and silicone can be inserted into the inner groove 201 to replace the combination of the fixing plate 401 and the elastic element 402. The flexible filler is also provided with an arc surface adapted to the fiber optic sensor 5.

[0068] In one possible implementation, the enclosure 1 is equipped with an optical fiber patch cord 6, an optical fiber quick connector 7, and a demodulation device 8. The optical cable 3 is connected to the optical fiber sensor 5 and the demodulation device 8 through the optical fiber patch cord 6 and the optical fiber quick connector 7, respectively.

[0069] Based on the above design, the combination of fiber optic patch cord 6 and fiber optic quick connector 7 enables the connection of optical cable 3 with other devices, thereby transmitting the information detected by fiber optic sensor 5 to the outside world, allowing staff to monitor the status inside enclosure 1. Furthermore, demodulation device 8 is used to monitor the entire lifecycle of the battery pack and can also be used to connect multiple enclosures 1.

[0070] It is easy to understand that the fiber optic patch cord 6 and the fiber optic quick connector 7 can be any suitable existing model, and the present invention does not impose any restrictions on them.

[0071] Secondly, the present invention provides a method for deploying fiber optic sensor 5 based on the aforementioned battery box for pre-installing fiber optic sensors, comprising the following steps:

[0072] S100 Fiber Optic Cable 3 Selection: Select the appropriate fiber optic cable 3 based on either the temperature detection or stress detection scenario. For temperature detection scenarios, the fiber optic cable 3 structure should be a tight-buffered type (gapless, direct heat transfer), the sheath should be thin (thickness no greater than 2mm), made of a high thermal conductivity material (such as silicone rubber / PTFE, thermal conductivity ≥0.3W / (m・K)), and the fiber coating should be high-temperature resistant and thermally conductive (such as polyimide coating). For stress detection scenarios, the fiber optic cable 3 structure should be a tight-buffered / fiber Bragg grating integrated type (gapless between fiber and sheath), the reinforcement should have good coupling with the fiber and no stress dispersion (such as fiber-reinforced plastic / aramid), the sheath should be made of a high elastic modulus material, and the stress transfer efficiency should be ≥98% (such as epoxy coating).

[0073] Optionally, for scenarios with high protection requirements for optical cable 3, thick-sheathed optical cable 3 or armored optical cable 3 can be selected.

[0074] S200 Adhesive Selection: Choose the adhesive based on the temperature testing or stress testing scenario. For temperature testing scenarios, prioritize high thermal conductivity (thermal conductivity ≥ 0.8 W / (m・K)) adhesives, such as thermally conductive silicone adhesives (e.g., Dow Corning TC-5022) for high-temperature scenarios and thermally conductive epoxy adhesives (e.g., 3M DP8005) for room-temperature scenarios. For stress testing scenarios, prioritize low shrinkage (shrinkage rate ≤ 0.5%) and high elastic modulus adhesives (10~30 GPa).

[0075] S300 Preparation: Wipe the outer sheath of optical cable 3, groove 2, and fixing plate 401 with alcohol, and let it air dry naturally; lightly sand the outer sheath of optical cable 3 with fine-grit sandpaper. When sanding the outer sheath of optical cable 3, avoid sanding too deeply and damaging the optical fiber.

[0076] S400 One-Step Adhesive Application: Mark the placement location of the fiber optic sensor 5; place the housing 1 horizontally; apply adhesive, ensuring no adhesive is applied to either side of the marked location. Specifically, leave no adhesive within 1 cm on either side of the marked location to avoid adhesive coverage. If a distributed fiber optic sensor 5 is used, marking the location is unnecessary, and adhesive can be applied directly to the groove 2. Alternatively, tape or clips can be used instead of the adhesive layer formed by the one-step application.

[0077] S500 Optical Cable 3 Placement: Place the optical cable 3 flat in the groove 2 according to the markings and wait for the adhesive to cure. The optical cable 3 is pre-connected to the fiber optic sensor 5; pay attention to the position of the fiber optic sensor 5 when placing the optical cable 3; alternatively, after placing the optical cable 3, install the fiber optic sensor 5 at the marked position.

[0078] S600 Secondary Adhesive Application: Adhesive is applied to the surface of optical cable 3 and the battery is placed inside the housing 1; wait for the adhesive to cure; fiber optic patch cords 6 are fused to both ends of optical cable 3 and connected to the fiber optic quick connectors 7 in housing 1. The secondary adhesive application connects optical cable 3 to the battery, and after optical cable 3 is connected to the fiber optic quick connectors 7, it can be connected to demodulation devices 8.

[0079] In summary, the fiber optic sensor 5 deployment method is simple and easy to implement, and can be operated independently of the battery pack without interfering with the battery pack assembly process, thus not affecting the battery pack production efficiency.

[0080] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A battery box for pre-installing fiber optic sensors, characterized in that, include: The housing (1) is used to house the battery; A groove (2) is provided along the box body (1), and the groove (2) is used to install the optical cable (3); An optical cable (3) is threaded through a groove (2), and an optical fiber sensor (5) for detecting the battery is connected to the optical cable (3); and A push-fit module (4) is installed on the housing (1). The push-fit module (4) uses elasticity to fix the fiber optic sensor (5) onto the surface to be measured.

2. The battery box for pre-installing fiber optic sensors according to claim 1, characterized in that, The groove (2) extends along the surface of the housing (1) into the housing (1) and / or out of the housing (1) until the groove (2) covers at least all the batteries; Accordingly, when the groove (2) extends to the inside and outside of the box (1), the box (1) is provided with a connecting hole for connecting the inner and outer grooves (2).

3. The battery box for pre-installing fiber optic sensors according to claim 2, characterized in that, The groove (2) is constructed as a continuous groove extending from one end to the other, or, at least one partition block is provided to make the groove (2) discontinuous.

4. The battery box for pre-installing fiber optic sensors according to claim 2, characterized in that, When the groove (2) is bent, the minimum radius of curvature of the groove (2) is greater than the minimum radius of curvature of the optical cable (3).

5. The battery box for pre-installing fiber optic sensors according to claim 2, characterized in that, The size of the groove (2) is larger than the outer diameter of the optical cable (3). Accordingly, when the optical cable (3) is installed in the groove (2), there is a gap between the groove (2) and the optical cable (3).

6. The battery box for pre-installing fiber optic sensors according to claim 1, characterized in that, The push-back module (4) includes a fixed plate (401) and an elastic element (402); the fixed plate (401) is slidably disposed on the groove (2), and correspondingly, the groove (2) is provided with an inner groove (201) for mounting the fixed plate (401); the two ends of the elastic element (402) are respectively connected to the fixed plate (401) and the inner groove (201).

7. The battery box for pre-installing fiber optic sensors according to claim 6, characterized in that, Let the depth of the groove (201) be H, the width of the groove (201) be W, the diameter of the fiber optic sensor (5) be D, the thickness of the fixing plate (401) be h, and the width of the fixing plate (401) be w, where H = (2-5)D + h, W = 1.1-3w, and w = 1.1-1.5D.

8. The battery box for pre-installing fiber optic sensors according to claim 6, characterized in that, The fixing plate (401) is made of high rigidity plate, and the surface of the fixing surface is provided with an arc surface adapted to the fiber optic sensor (5); When the elastic element (402) is at its maximum length, the fixing plate (401) is located inside the inner groove (201), and the optical cable (3) is located outside the groove (2); and the elastic force of the elastic element (402) is less than 10N.

9. The battery box for pre-installing fiber optic sensors according to any one of claims 1-8, characterized in that, The enclosure (1) is equipped with fiber optic patch cords (6), fiber optic quick connectors (7) and demodulation equipment (8). The optical cable (3) is connected to the fiber optic sensor (5) and demodulation equipment (8) through the fiber optic patch cords (6) and fiber optic quick connectors (7).

10. A method for deploying fiber optic sensors (5) in a battery box for pre-installing fiber optic sensors according to any one of claims 1-9, characterized in that, Includes the following steps: Optical cable (3) selection: Select the optical cable (3) to be used based on the temperature detection scenario or stress detection scenario. Adhesive selection: Choose the adhesive based on the temperature detection scenario or stress detection scenario; Preparation: Wipe the outer sheath, groove (2) and fixing plate (401) of the optical cable (3) with alcohol and let it air dry naturally; lightly sand the outer sheath of the optical cable (3) with fine sandpaper; First application of glue: Mark the location of the fiber optic sensor (5); place the box (1) horizontally; apply glue, but do not apply glue to the sides of the marked location; Optical cable (3) placement: Place the optical cable (3) flat in the groove (2) according to the markings and wait for the glue to cure; Secondary adhesive application: Apply adhesive to the surface of the optical cable (3) and place the battery inside the box (1); wait for the adhesive to cure; fused fiber optic patch cords (6) to both ends of the optical cable (3) and connected to the fiber optic quick connectors (7) of the box (1).

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