Device for monitoring working temperature of lithium ion battery

Abstract

The utility model discloses a lithium ion battery working temperature monitoring device, which comprises a bottom plate, an L-shaped mounting frame, a temperature sensor, a temperature sensor, a temperature sensor and a temperature sensor, wherein the bottom plate is fixedly provided with the L-shaped mounting frame; the rotary monitoring frame is rotationally mounted at one end of the L-shaped mounting frame, and a driving mechanism for driving the rotary monitoring frame to rotate is arranged on the L-shaped mounting frame; the at least two infrared temperature measuring instruments are symmetrically arranged on the rotary monitoring frame so as to monitor the temperature of the battery between the two infrared temperature measuring instruments; the working temperature of the battery is monitored through the two oppositely-arranged infrared temperature measuring instruments, and in the monitoring process, the driving mechanism can drive the rotating monitoring frame to periodically rotate in a reciprocating mode, so that the battery can be monitored in an omnibearing and dead-corner-free mode through a small number of infrared temperature measuring instruments, and the monitoring efficiency is improved. And the working height of the infrared temperature measuring instrument can be adjusted, so that the monitoring work of batteries with different sizes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lithium ion battery working temperature monitoring device. BACKGROUND

[0002] Lithium batteries are extremely sensitive to temperature, and their performance, life and safety are significantly affected by temperature. Excessive temperature can cause the chemical reaction inside the battery to accelerate, leading to thermal runaway, short circuit and even explosion and other dangers. On the other hand, low temperature will increase the internal resistance of the battery, reducing the discharge capacity and energy efficiency of the battery. Therefore, real-time and accurate temperature monitoring of lithium batteries is crucial during the design, manufacture and quality testing of lithium batteries. During the production process of lithium batteries, an infrared thermal imager is usually used to monitor the temperature distribution on the surface of the battery in real time, allowing the hot spots and temperature gradients on the surface of the battery to be observed directly, thereby determining whether the battery is overheating or has uneven temperature, and helping staff to identify potential safety hazards in a timely manner.

[0003] The existing temperature monitoring device only has an infrared thermal imager set in a few specified directions to improve the accuracy of the data through multi-directional monitoring. However, this method still has some monitoring blind spots, making it impossible to monitor the temperature of the battery at all places completely, and multiple infrared thermal imagers are usually required to ensure full coverage of the monitoring range, resulting in high usage costs. Therefore, we propose a lithium ion battery working temperature monitoring device. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a lithium ion battery working temperature monitoring device to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a lithium ion battery working temperature monitoring device, comprising:

[0006] A bottom plate has an L-shaped mounting bracket fixed thereon;

[0007] A rotating monitoring bracket is rotatably installed at one end of the L-shaped mounting bracket, and the L-shaped mounting bracket has a driving mechanism for driving the rotating monitoring bracket to rotate;

[0008] At least two infrared temperature measuring instruments are symmetrically arranged on the rotating monitoring bracket to monitor the temperature of the battery between the two infrared temperature measuring instruments.

[0009] Two oppositely arranged infrared temperature measuring instruments are used to monitor the working temperature of the battery. The driving mechanism makes the monitoring bracket rotate periodically, driving the infrared temperature measuring instrument to rotate around the battery, achieving omnidirectional monitoring. At the same time, the infrared temperature measuring instrument can move up and down along the vertical rod to adjust the working height, adapting to the monitoring of batteries of different sizes.

[0010] Preferably, the rotating monitoring frame includes a hollow rotating shaft, a horizontal bar, a vertical bar, and a sliding mounting platform. The hollow rotating shaft is rotatably mounted on one end of the inner side of the L-shaped mounting frame, and a horizontal bar is fixedly connected to the bottom end of the hollow rotating shaft. A vertical bar is provided on the lower surface of the horizontal bar, and a sliding mounting platform for cooperating with an infrared temperature measuring instrument is provided on the vertical bar.

[0011] The platform supports the infrared temperature measuring instrument, and the movable sleeve moves up and down along the vertical rod, providing a structural basis for its height adjustment.

[0012] Preferably, the sliding mounting platform includes a movable sleeve, a platform plate, and a locking component. The movable sleeve is slidably mounted on the vertical rod, and the locking component is connected to one side of the movable sleeve via a threaded portion. A snap-fit ​​groove corresponding to the locking component is provided on one side wall of the vertical rod.

[0013] The working height of the infrared temperature measuring instrument is fixed by the friction between the snap-fit ​​groove and the movable sleeve.

[0014] Preferably, the infrared temperature measuring instrument is electrically connected to a cable, which is laid along the vertical and horizontal bars and finally passes through the hollow rotating shaft. The vertical and horizontal bars are equipped with clamps for fixing the cable.

[0015] To avoid cable interference with the reciprocating motion of the rotating monitoring frame, a structural foundation is provided for the rotation of the infrared temperature measuring instrument.

[0016] Preferably, the base plate is provided with a rear isolation cover that covers the outside of the rotation monitoring frame, and the front end of the rear isolation cover is detachably connected to a front isolation cover.

[0017] The enclosure formed by the isolation shield and the front isolation shield isolates the monitoring environment from the external environment, reducing the error of external changes on the monitoring results.

[0018] Preferably, a set of temperature regulating tubes is fixedly installed at the top of the front isolation cover, one of which is connected to the output interface of an external refrigeration or heating device.

[0019] By supplying hot or cold air into the enclosure through a temperature regulating pipe, the temperature of the monitoring environment inside the enclosure is adjusted, thereby enabling monitoring work to be carried out under specific temperature conditions.

[0020] Preferably, a set of carbon dioxide fire extinguishing pipes is fixedly installed at the top of the rear isolation cover, one of which is connected to the output end interface of an external carbon dioxide fire extinguisher.

[0021] When a monitored battery catches fire, the carbon dioxide extinguishing tube can quickly deliver carbon dioxide into the enclosure to effectively extinguish the fire, thereby improving safety during the monitoring process.

[0022] Preferably, the driving mechanism comprises a motor support, a driving motor is installed on the motor support, a driving wheel and a driven wheel are respectively fixedly installed on the rotating monitoring frame and connected through a transmission belt.

[0023] The driving motor drives the driving wheel to rotate, the driven wheel is driven to rotate under the action of the transmission belt, and finally the rotation of the driven wheel realizes the rotation of the rotating monitoring frame as a whole.

[0024] Compared with the prior art, the utility model has the advantages that:

[0025] The two oppositely arranged infrared temperature measuring instruments monitor the working temperature of the battery, and during the monitoring process, the driving mechanism can drive the rotating monitoring frame to periodically reciprocate, so as to drive the infrared temperature measuring instruments installed thereon to rotate around the battery to be monitored, realize the omnibearing and dead-angle-free monitoring of the battery by using a small number of infrared temperature measuring instruments, and the infrared temperature measuring instruments can move up and down along the vertical rod to change the working height, so as to meet the monitoring of batteries of different sizes.

[0026] In addition, the complete cover formed by the rear isolation cover and the front isolation cover can isolate the monitoring environment from the external environment, and can weaken the error of the monitoring result caused by the change of the external environment. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole structure schematic view of the utility model;

[0028] Figure 2 It is an internal structure schematic view of the utility model;

[0029] Figure 3 It is a rotating monitoring frame structure schematic view of the utility model;

[0030] Figure 4 It is a sliding installation table structure schematic view of the utility model;

[0031] Figure 5 It is a driving mechanism structure schematic view of the utility model.

[0032] In the drawing: 1, bottom plate; 2, L-shaped mounting frame; 3, rotating monitoring frame; 31, hollow rotating shaft; 32, cross rod; 33, vertical rod; 331, clamping groove; 34, sliding installation table; 341, movable sleeve; 342, table plate; 343, locking piece; 35, wire clamp; 4, infrared temperature measuring instrument; 41, cable; 5, driving mechanism; 51, motor support; 52, driving motor; 53, driving wheel; 54, driven wheel; 55, transmission belt; 61, rear isolation cover; 62, front isolation cover; 71, temperature adjusting pipe; 72, carbon dioxide fire extinguishing pipe. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] Please refer to Figures 1-5 The present application provides a technical solution: a lithium ion battery working temperature monitoring device, comprising:

[0035] A bottom plate 1 is fixed with an L-shaped mounting bracket 2;

[0036] A rotating monitoring bracket 3 is rotatably installed at one end of the L-shaped mounting bracket 2, and the L-shaped mounting bracket 2 has a driving mechanism 5 for driving the rotating monitoring bracket 3 to rotate;

[0037] At least two infrared temperature measuring instruments 4 are symmetrically arranged on the rotating monitoring bracket 3 to monitor the temperature of the battery between the two infrared temperature measuring instruments 4.

[0038] It is convenient to monitor the working temperature of the battery by the two oppositely arranged infrared temperature measuring instruments 4, and during the monitoring process, the driving mechanism 5 can drive the rotating monitoring bracket 3 to periodically reciprocate, so as to drive the infrared temperature measuring instruments 4 installed thereon to rotate around the battery to be monitored, so as to realize the omnidirectional and dead angle-free monitoring of the battery by the small number of infrared temperature measuring instruments 4, and the infrared temperature measuring instruments 4 can move up and down along the vertical rod 33 to change the working height, so as to meet the monitoring of batteries of different sizes.

[0039] In the embodiment, preferably, the rotating monitoring bracket 3 comprises a hollow rotating shaft 31, a horizontal rod 32, a vertical rod 33 and a sliding installation table 34, the hollow rotating shaft 31 is rotatably installed at one end of the inner side of the L-shaped mounting bracket 2, and the bottom end of the hollow rotating shaft 31 is fixedly connected with the horizontal rod 32, the lower surface of the horizontal rod 32 is provided with the vertical rod 33, and the vertical rod 33 is provided with the sliding installation table 34 matched with the infrared temperature measuring instrument 4, the table plate 342 can support the infrared temperature measuring instrument 4, and the movable sleeve 341 can move up and down along the vertical rod 33, thereby providing the necessary structural basis for the height adjustment of the infrared temperature measuring instrument 4.

[0040] In the embodiment, preferably, the sliding mounting table 34 comprises a movable sleeve 341, a table plate 342 and a locking piece 343, the movable sleeve 341 is slidably sleeved on the vertical rod 33, the locking piece 343 is connected to one side of the movable sleeve 341 through a threaded portion, and one side wall of the vertical rod 33 is provided with a clamping groove 331 corresponding to the locking piece 343. After the height adjustment of the infrared temperature measuring instrument 4 is completed, the locking piece 343 is tightened, and the position of the movable sleeve 341 can be fixed through the friction force between the locking piece 343 and the clamping groove 331, so as to complete the fixation of the working height of the infrared temperature measuring instrument 4.

[0041] In the embodiment, preferably, the infrared temperature measuring instrument 4 is electrically connected with a cable 41, the cable 41 is laid along the vertical rod 33 and the horizontal rod 32, and finally passes out of the hollow rotating shaft 31, and the vertical rod 33 and the horizontal rod 32 are both provided with a wire clamp 35 for fixing the cable 41, which can avoid the interference of the laid cable 41 with the reciprocating rotation of the rotating monitoring frame 3 as a whole, and provides a necessary structural basis for the rotation of the infrared temperature measuring instrument 4 driven by the rotating monitoring frame 3.

[0042] In the embodiment, preferably, the bottom plate 1 is provided with a rear isolation cover 61 covering the outside of the rotating monitoring frame 3, and the front end of the rear isolation cover 61 is detachably connected with a front isolation cover 62, so that the complete cover formed by the rear isolation cover 61 and the front isolation cover 62 can isolate the monitoring environment from the external environment, and can weaken the error of the monitoring result caused by the change of the external environment.

[0043] In the embodiment, preferably, a group of temperature adjusting pipes 71 are fixedly arranged at the top end of the front isolation cover 62, one of which is connected with the output end of an external refrigeration or heating device, so as to facilitate the delivery of hot air or cold air into the cover through the temperature adjusting pipes 71, so as to adjust the temperature of the monitoring environment in the cover, and facilitate the monitoring work under specific temperature conditions.

[0044] In the embodiment, preferably, a group of carbon dioxide fire extinguishing pipes 72 are fixedly arranged at the top end of the rear isolation cover 61, one of which is connected with the output end of an external carbon dioxide fire extinguisher, so that when the monitored battery catches fire, carbon dioxide can be rapidly sent into the space in the cover through the carbon dioxide fire extinguishing pipes 72, so as to play a role in extinguishing the fire, and further improve the safety during monitoring.

[0045] In the embodiment, preferably, the driving mechanism 5 comprises a motor bracket 51, a driving motor 52 is installed on the motor bracket 51, a driving motor 52 output shaft and a rotating monitoring frame 3 are respectively fixedly installed with a driving wheel 53 and a driven wheel 54, and the driving wheel 53 and the driven wheel 54 are transmissionally connected through a transmission belt 55, so that the driving motor 52 can drive the driving wheel 53 to rotate, and then drive the driven wheel 54 to rotate under the transmission action of the transmission belt 55, and finally drive the rotating monitoring frame 3 as a whole to rotate through the rotation of the driven wheel 54.

[0046] The working principle and use process of the utility model: two opposite infrared temperature measuring instruments 4 set up monitor the working temperature of the battery, and in the monitoring process, the driving mechanism 5 can drive the rotating monitoring frame 3 to reciprocating rotation periodically, so as to drive the infrared temperature measuring instrument 4 installed thereon to rotate around the battery to be monitored, realize that a smaller number of infrared temperature measuring instruments 4 are used to monitor the battery all-round and dead angle free, and the infrared temperature measuring instrument 4 can move up and down along the vertical rod 33, change the working height, so as to satisfy the monitoring work of the battery of different sizes.

[0047] In the above process, the driving motor 52 drives the driving wheel 53 to rotate, and then drives the driven wheel 54 to rotate under the transmission of the transmission belt 55, and finally drives the rotating monitoring frame 3 to rotate as a whole through the rotation of the driven wheel 54.

[0048] In addition, the complete cover formed by the rear isolation cover 61 and the front isolation cover 62 can isolate the monitoring environment from the external environment, and can weaken the error of the monitoring result caused by the change of the external environment, wherein the temperature adjusting pipe 71 sends hot air or cold air into the cover, so as to adjust the temperature of the monitoring environment in the cover, facilitate the monitoring work under specific temperature conditions, and when the monitored battery catches fire, the carbon dioxide fire extinguishing pipe 72 can quickly send carbon dioxide into the space in the cover, play the role of fire extinguishing, and then improve the safety during monitoring.

[0049] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery operating temperature monitoring device, characterized by, The utility model relates to a battery temperature monitoring device, including: The bottom plate (1) is fixed with L-shaped mounting bracket (2) on the bottom plate (1); Rotary monitoring frame (3) is rotatably installed at one end of L-shaped mounting bracket (2), and the L-shaped mounting bracket (2) has driving mechanism (5) for driving rotary monitoring frame (3) to rotate; At least two infrared temperature measuring instruments (4) are symmetrically arranged on rotary monitoring frame (3) to monitor the temperature of the battery between the two infrared temperature measuring instruments (4).

2. The lithium-ion battery operating temperature monitoring device of claim 1, wherein: The rotary monitoring frame (3) includes hollow rotating shaft (31), crossbar (32), vertical rod (33) and sliding mounting table (34), the hollow rotating shaft (31) is rotatably installed at one end of the inner side of L-shaped mounting bracket (2), and the bottom end of the hollow rotating shaft (31) is fixedly connected with crossbar (32), the lower surface of crossbar (32) is provided with vertical rod (33), and the vertical rod (33) is provided with sliding mounting table (34) matched with infrared temperature measuring instrument (4).

3. The lithium-ion battery operating temperature monitoring device of claim 2, wherein: The sliding mounting table (34) includes movable sleeve (341), table plate (342) and locking part (343), the movable sleeve (341) is slidably sleeved on the vertical rod (33), the locking part (343) is connected on one side of the movable sleeve (341) through the thread part, and the side wall of the vertical rod (33) is provided with the clamping groove (331) corresponding to the locking part (343).

4. The lithium-ion battery operating temperature monitoring device of claim 3, wherein: The infrared temperature measuring instrument (4) is electrically connected with the cable (41), the cable (41) is laid along the vertical rod (33) and the crossbar (32), and finally passes out from the hollow rotating shaft (31), and the vertical rod (33) and the crossbar (32) are both provided with cable clamp (35) for fixing the cable (41).

5. The lithium-ion battery operating temperature monitoring device of claim 1, wherein: The bottom plate (1) is provided with rear isolation cover (61) covering the outside of rotary monitoring frame (3), and the front end of rear isolation cover (61) is detachably connected with front isolation cover (62).

6. The lithium-ion battery operating temperature monitoring device of claim 5, wherein: The top end of the front isolation cover (62) is fixedly provided with a group of temperature adjusting pipes (71), one of which is connected with the output end interface of the external refrigeration or heating equipment.

7. The lithium-ion battery operating temperature monitoring device of claim 5, wherein: The top end of the rear isolation cover (61) is fixedly provided with a group of carbon dioxide fire extinguishing pipes (72), one of which is connected with the output end interface of the external carbon dioxide fire extinguisher.

8. The lithium-ion battery operating temperature monitoring device of claim 1, wherein: The driving mechanism (5) includes motor support (51), the driving motor (52) is installed on the motor support (51), and the output shaft of the driving motor (52) is fixedly installed with driving wheel (53) and driven wheel (54) on rotary monitoring frame (3) respectively, and the driving wheel (53) and the driven wheel (54) are drivingly connected through transmission belt (55).

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