Lithium battery built-in fiber grating temperature acquisition device

Abstract

The utility model relates to the technical field of lithium battery temperature acquisition, and discloses a built-in fiber grating temperature acquisition device for a lithium battery, which comprises a battery body, a reinforcing shell is embedded in the outer wall of the battery body, and an acquisition mechanism is arranged in the reinforcing shell; and the collection mechanism comprises a placement groove, the placement groove is formed in the reinforcing shell, and a glass bottom shell is embedded in one side of the bottom end in the placement groove. According to the built-in fiber bragg grating temperature acquisition device based on the lithium battery, through the design of the reinforcing shell, the glass bottom shell, the limiting block and the glass cover, the sensor body is packaged to form a surface-mounted structure, and the temperature acquisition can be prevented from being influenced by the glass material; meanwhile, the sensor body is made to face the interior of the battery body to collect the temperature, and the sensor body can be repaired or replaced by disassembling and assembling the glass cover, so that the overall convenience and comprehensiveness are improved, and the limitation of later maintenance is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery temperature acquisition technology, specifically a lithium battery built-in fiber optic grating temperature acquisition device. Background Technology

[0002] Lithium-ion batteries are chemical batteries that use lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. They can store a large amount of electrical energy in a small volume and weight, and the energy loss is slow during storage, allowing them to maintain their charge for a long time. This makes them suitable for long-term storage and backup. Under normal operating conditions, they can withstand multiple charge-discharge cycles while maintaining good performance. For example, some lithium-ion batteries used in electric vehicles can retain more than 80% of their capacity after thousands of cycles. To ensure safety, lithium-ion batteries are equipped with temperature monitoring devices that collect temperature data in real time, effectively preventing potential hazards.

[0003] In the field of lithium battery temperature acquisition, existing lithium battery temperature acquisition uses fiber optic grating sensors for temperature acquisition. However, this method is usually fixed inside the lithium battery. If the fiber optic grating sensor is damaged, it is inconvenient to replace or repair it, resulting in limited application. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given that the existing fiber optic grating sensors are usually fixed inside the lithium battery, it is inconvenient to replace or repair them if they are damaged, which limits their application.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lithium battery-embedded fiber Bragg grating temperature acquisition device, characterized in that it comprises:

[0008] The battery body has a reinforcing shell embedded in its outer wall, and a data collection mechanism is provided inside the reinforcing shell.

[0009] The acquisition mechanism includes a mounting groove, which is opened inside the reinforced shell. A glass bottom shell is embedded in one side of the bottom of the mounting groove. A sensor body is embedded inside the glass bottom shell. A limit block is fixedly installed on the outside of the sensor body at the bottom of the glass bottom shell. A glass cover is fixedly installed on the top of the limit block.

[0010] As a further improvement of this utility model: an optical fiber extends from one side of the top of the sensor body, and a limiting hole is formed on the inner wall of the glass cover corresponding to the position of the optical fiber.

[0011] As a further improvement of this utility model: the inner sides of the placement groove are provided with sliding grooves, and the interior of the sliding grooves is provided with a closing mechanism.

[0012] As a further embodiment of this utility model: the closing mechanism includes a sliding cover, which is slidably connected inside the mounting groove, and a locking block is fixedly installed on one side of the outer wall of the sliding cover at the position corresponding to the sliding groove.

[0013] As a further improvement of this utility model: a positioning hole is provided on one side of the top of the reinforced shell, and a positioning plate is fixedly installed on the other side of the outer wall of the sliding cover at the position corresponding to the positioning hole.

[0014] As a further improvement of this utility model: a limiting groove is provided inside the sliding cover, and a rubber layer is embedded in the inner wall of the limiting groove.

[0015] As a further improvement of this utility model: a pressing plate is inserted into one side of the rubber layer inside the limiting groove, and a rubber block is fixedly installed on the pressing plate facing the outer wall of the rubber layer.

[0016] As a further improvement of this utility model: a limiting rod is fixedly installed on the other side of the outer wall of the pressing plate, and a spring is embedded in one end of the limiting rod that passes through the reinforcing shell.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model achieves the encapsulation of the sensor body into a patch structure through the design of a reinforced shell, a glass bottom shell, a limiting block, and a glass cover. The glass material can avoid the influence of temperature acquisition, while allowing the sensor body to face the inside of the battery body to collect temperature. The sensor body can be repaired or replaced by removing and installing the glass cover, improving the overall convenience and comprehensiveness, and avoiding the limitation of later maintenance.

[0019] 2. This utility model, through the design of a sliding cover, locking block, positioning hole and positioning plate, can cover the entire acquisition mechanism with the sliding cover to avoid excessive temperature loss, which would affect the accuracy of temperature acquisition. At the same time, it can protect the glass bottom shell and glass cover made of glass material, avoiding damage caused by external collisions or bumps.

[0020] 3. This utility model, through the design of limiting holes, limiting grooves and rubber layers, can reserve a channel for the connection of optical fiber lines, avoiding squeezing or folding of optical fiber lines during installation, which would affect the quality of signal transmission and increase optical signal loss.

[0021] 4. This utility model, through the design of a pressing plate, rubber block, limiting rod and spring, can use the elastic push of the spring to make the rubber layer and rubber block contact and press the optical fiber, so as to achieve the limiting effect. When external force is pulled, it avoids affecting the stability of the connection with the sensor body. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a lithium battery-embedded fiber Bragg grating temperature acquisition device.

[0023] Figure 2 A schematic diagram of the glass bottom shell structure of a lithium battery-embedded fiber Bragg grating temperature acquisition device;

[0024] Figure 3 A schematic diagram of a limiting block structure for a lithium battery-embedded fiber Bragg grating temperature acquisition device;

[0025] Figure 4 A schematic diagram of the positioning plate structure of a lithium battery-embedded fiber Bragg grating temperature acquisition device;

[0026] Figure 5 This is a schematic diagram of the limiting rod structure of a lithium battery-embedded fiber optic grating temperature acquisition device.

[0027] In the diagram: 1. Battery body; 2. Reinforced shell; 3. Data acquisition mechanism; 301. Mounting groove; 302. Glass bottom shell; 303. Sensor body; 304. Limiting block; 305. Glass cover; 306. Fiber optic cable; 307. Limiting hole; 4. Sliding groove; 5. Sealing mechanism; 501. Sliding cover; 502. Engaging block; 503. Positioning hole; 504. Positioning plate; 505. Limiting groove; 506. Rubber layer; 507. Pressing plate; 508. Rubber block; 509. Limiting rod; 510. Spring. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0031] Example 1

[0032] Please see Figures 1 to 4 This is the first embodiment of the present invention. This embodiment provides a lithium battery built-in fiber optic grating temperature acquisition device, including: a battery body 1, a reinforcing shell 2 embedded in the outer wall of the battery body 1, and an acquisition mechanism 3 disposed inside the reinforcing shell 2.

[0033] The data acquisition mechanism 3 includes a mounting groove 301, which is located inside the reinforced shell 2. A glass bottom shell 302 is embedded in one side of the bottom of the mounting groove 301. A sensor body 303 is embedded inside the glass bottom shell 302. A limiting block 304 is fixedly installed on the outside of the sensor body 303 at the bottom of the glass bottom shell 302. A glass cover 305 is fixedly installed on the top of the limiting block 304.

[0034] Specifically, an optical fiber 306 extends from one side of the top of the sensor body 303, and a limiting hole 307 is provided on the inner wall of the glass cover 305 corresponding to the position of the optical fiber 306.

[0035] Furthermore, the limiting hole 307 can limit and straighten the optical fiber 306, preventing it from shifting or tangling, which would affect signal transmission.

[0036] In use, the battery body 1 is embedded with a reinforcing shell 2 in the area where temperature measurement is required. The mounting groove 301 of the reinforcing shell 2 is used to embed a glass bottom shell 302. After the glass bottom shell 302 and the glass cover 305 are bonded together, the fiber optic grating sensor body 303 is encapsulated to form a patch type located at the bottom of the reinforcing shell 2. The sensor body 303 is limited by a limiting block 304. At the same time, the fiber optic cable 306 can pass through the reserved limiting hole 307 to connect with the external demodulation equipment. It is used to receive the light signal reflected back from the fiber optic grating, demodulate and analyze the reflected light signal, convert the light signal into an electrical signal, and calculate the corresponding temperature value. Multiple sensor bodies 303 form a distributed temperature measurement.

[0037] In summary, the limiting block 304 can limit the sensor body 303, and at the same time, the limiting block 304 can support the glass cover 305 and the glass bottom shell 302 to close and form the same horizontal plane. Adhesive can be introduced into the joint between the glass cover 305 and the glass bottom shell 302. When replacement or repair is required, the sensor body 303 can be disassembled by inserting a blade into the joint between the glass cover 305 and the glass bottom shell 302. This allows for convenient maintenance of the sensor body 303 directly from the outer wall, without affecting the sensor body 303's temperature acquisition and monitoring of the battery body 1.

[0038] Example 2

[0039] Please see Figure 1 , Figure 4 and Figure 5 This is the second embodiment of the present invention, which provides an improved design for a lithium battery-embedded fiber optic grating temperature acquisition device.

[0040] Specifically, the inside of the placement groove 301 is provided with sliding grooves 4 on both sides, and the inside of the sliding grooves 4 is provided with a closing mechanism 5.

[0041] Furthermore, the sealing mechanism 5 can seal the acquisition mechanism 3, preventing heat loss and thus affecting the accuracy of temperature acquisition.

[0042] Specifically, the closing mechanism 5 includes a sliding cover 501, which is slidably connected inside the mounting groove 301. A locking block 502 is fixedly installed on one side of the outer wall of the sliding cover 501 at the position corresponding to the sliding groove 4.

[0043] Furthermore, the L-shaped sliding cover 501 can slide along the slide groove 4 via the locking block 502, thereby closing the acquisition mechanism 3. It can be opened for maintenance, and under normal circumstances, closing it can prevent temperature loss from affecting the accuracy of acquisition while protecting the glass cover 305.

[0044] Specifically, a positioning hole 503 is provided on one side of the top of the reinforced shell 2, and a positioning plate 504 is fixedly installed on the other side of the outer wall of the sliding cover 501 at the position corresponding to the positioning hole 503.

[0045] Furthermore, the positioning plate 504 at one end of the sliding cover 501 is inserted into the interior of the reinforcing shell 2 and corresponds to the positioning hole 503, which facilitates fastening with screws, thereby fixing the sliding cover 501 and preventing it from becoming loose.

[0046] Specifically, a limiting groove 505 is provided inside the sliding cover 501, and a rubber layer 506 is embedded in the inner wall of the limiting groove 505.

[0047] Furthermore, the limiting groove 505 provides space for the optical fiber 306 to pass through, and the rubber layer 506 provides protection to prevent damage due to excessive friction.

[0048] Specifically, a pressing plate 507 is inserted into one side of the rubber layer 506 inside the limiting groove 505, and a rubber block 508 is fixedly installed on the pressing plate 507 facing the outer wall of the rubber layer 506.

[0049] Furthermore, the rubber block 508 on one side of the pressing plate 507 presses the optical fiber 306 and adheres to one side of the rubber layer 506, which can limit the position of the optical fiber 306.

[0050] Specifically, a limiting rod 509 is fixedly installed on the other side of the outer wall of the pressing plate 507, and a spring 510 is embedded in one end of the limiting rod 509 that passes through the reinforcing shell 2.

[0051] Furthermore, by sliding the limiting rod 509 into the reinforcing shell 2, the pressing plate 507 can apply pressure through the elastic push of the spring 510, and the rubber layer 506 and the rubber block 508 can clamp and limit the fiber optic cable 306 to avoid excessive loosening, which would affect the connection stability of the sensor body 303 and the demodulation equipment.

[0052] In use, after the acquisition mechanism 3 is installed, the sliding cover 501 slides along the placement groove 301 through the sliding groove 4 and the locking block 502 until the positioning plate 504 corresponds to the positioning hole 503 and is fixed by screws. This allows the sliding cover 501 to protect the acquisition mechanism 3. At the same time, the limiting groove 505 and the rubber layer 506 are used to limit the fiber optic cable 306, and together with the spring 510, they elastically push the limiting rod 509, so that the pressing plate 507 generates pressure, and the rubber block 508 and the rubber layer 506 clamp and limit the fiber optic cable 306 to avoid excessive shaking.

[0053] In summary, the sliding cover 501 and the positioning plate 504 work together, and are fixed by the positioning hole 503 and screws, which can protect the acquisition mechanism 3 and prevent temperature loss from affecting the accuracy of the acquired data. At the same time, under the elastic push of the spring 510, the rubber layer 506 and the rubber block 508 can limit and clamp the fiber optic cable 306, preventing it from being pulled by external force and affecting the connection with the sensor body 303. At the same time, the fiber optic cable 306 needs to have a certain length of space for pulling to avoid breakage due to being pulled by external force.

[0054] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0056] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lithium battery-embedded fiber Bragg grating temperature acquisition device, characterized in that: include: The battery body (1) has a reinforcing shell (2) embedded in its outer wall, and a collection mechanism (3) is provided inside the reinforcing shell (2). The acquisition mechanism (3) includes a mounting groove (301), which is located inside the reinforced shell (2). A glass bottom shell (302) is embedded in one side of the bottom of the mounting groove (301). A sensor body (303) is embedded inside the glass bottom shell (302). A limiting block (304) is fixedly installed on the outside of the sensor body (303) at the bottom of the glass bottom shell (302). A glass cover (305) is fixedly installed on the top of the limiting block (304).

2. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 1, characterized in that: An optical fiber (306) extends from one side of the top of the sensor body (303), and a limiting hole (307) is provided on the inner wall of the glass cover (305) corresponding to the position of the optical fiber (306).

3. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 1, characterized in that: The placement groove (301) has sliding grooves (4) on both sides inside, and the sliding grooves (4) are provided with a closing mechanism (5).

4. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 3, characterized in that: The closing mechanism (5) includes a sliding cover (501), which is slidably connected to the inside of the placement groove (301), and a locking block (502) is fixedly installed on one side of the outer wall of the sliding cover (501) at the position corresponding to the sliding groove (4).

5. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 4, characterized in that: A positioning hole (503) is provided on one side of the top of the reinforced shell (2), and a positioning plate (504) is fixedly installed on the other side of the outer wall of the sliding cover (501) at the position corresponding to the positioning hole (503).

6. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 4, characterized in that: The sliding cover (501) has a limiting groove (505) inside, and the inner wall of the limiting groove (505) is fitted with a rubber layer (506).

7. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 6, characterized in that: A pressing plate (507) is inserted into one side of the rubber layer (506) inside the limiting groove (505), and a rubber block (508) is fixedly installed on the outer wall of the pressing plate (507) facing the rubber layer (506).

8. The lithium battery-embedded fiber Bragg grating temperature acquisition device according to claim 7, characterized in that: A limiting rod (509) is fixedly installed on the other side of the outer wall of the pressing plate (507), and a spring (510) is embedded in one end of the limiting rod (509) that passes through the reinforcing shell (2).

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