Battery self-discharge heat shield

Abstract

The utility model relates to battery monitoring technical field especially, it relates to a battery self -discharge heat -proof box, include: box, the side of box is provided with and takes the first sealed door of putting window and the corresponding with taking and putting window, the top of box is provided with and adjusts the second sealed door of window and the corresponding with adjusting window, test device, including base, four lift rods of vertical fixed in base, with the top seat of lift rod sliding connection, drive the screw rod of top seat lift, the top seat center is equipped with the thread sleeve cooperation with screw rod, four lift rod top fixed in fixed frame, and the bearing seat that screw rod penetrates and installed in fixed frame center is equipped with, the top seat is equipped with the multiple test components of horizontal arrangement, and each test component includes horizontal plate and the electrode connecting piece of sliding installation in horizontal plate, temperature detection element, the base is equipped with with battery clamp cooperation's first sliding rail.

Description

Technical Field

[0001] This utility model relates to the field of battery monitoring technology, and in particular to a battery self-discharge insulation box. Background Technology

[0002] With the widespread use of batteries in various applications, especially the increasing importance of lithium-ion batteries in consumer electronics, automobiles, and energy storage systems, ensuring high battery performance and long lifespan has become crucial. Self-discharge is one of the key factors affecting battery performance and lifespan. A high self-discharge rate during storage reduces the battery's remaining capacity, thus impacting its usability in practical use. By studying and reducing battery self-discharge, storage life and efficiency can be improved, reducing the frequency of maintenance and replacement for users. Therefore, accurately measuring and evaluating battery self-discharge characteristics is of great significance for battery research and development and quality control. In battery self-discharge testing, it was found that ambient temperature has a significant impact on the test results. Strict control of environmental conditions is necessary to ensure the accuracy of the test results. Therefore, it is necessary to place a battery clamp containing multiple batteries into a heat-insulated box. By raising the position of the battery clamp, the battery electrodes are brought into contact with the probe structure on the top of the heat-insulated box, and self-discharge measurement is performed in a heat-insulated environment. However, the probe structure on the top of the existing heat-insulated box is fixed and can only be used for batteries of the same size and model. It cannot adapt to batteries of different sizes and models. Therefore, it is necessary to manufacture multiple heat-insulated boxes with different probe structure positions for batteries of different sizes and models, which greatly increases the manufacturer's costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a battery self-discharge insulation box, which aims to solve the problem that the probe structure on the top of the existing insulation box is fixed, which can only be used for batteries of the same size and model and cannot be adapted to batteries of different sizes and models. Therefore, it is necessary to make multiple insulation boxes with different probe structure positions for batteries of different sizes and models, which greatly increases the cost for manufacturers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A battery self-discharge insulation box, comprising:

[0006] The box body has a loading and unloading window and a first sealing door corresponding to the loading and unloading window on its side, and an adjustment window and a second sealing door corresponding to the adjustment window on its top.

[0007] The testing device includes a base, four lifting rods vertically fixed to the base, a top seat slidably connected to the lifting rods, and a rotary rod that drives the top seat to rise and fall.

[0008] The top seat is provided with a threaded sleeve that mates with the rotating rod at its center. The tops of the four lifting rods are fixed to the fixed frame. The rotating rod passes through and is installed in the bearing seat provided at the center of the fixed frame.

[0009] The top seat is provided with multiple test components arranged horizontally. Each test component includes a horizontal plate and an electrode connector and a temperature detection element that are slidably installed on the horizontal plate.

[0010] The base is provided with a first slide rail that engages with the battery clamp.

[0011] Furthermore, the fixing frame includes a first crossbeam, a second crossbeam, and a longitudinal beam. The two ends of the longitudinal beam are respectively fixed to the center of the first crossbeam and the second crossbeam to form an I-shaped structure. The tops of the two lifting rods on one side are respectively fixed to the two ends of the first crossbeam, and the tops of the two lifting rods on the other side are respectively fixed to the two ends of the second crossbeam. The longitudinal beam has a bearing seat at its center for mounting the rotating rod.

[0012] Furthermore, the top seat is provided with a second slide rail that cooperates with the plurality of horizontal plates, for adjusting the distance between the horizontal plates laterally.

[0013] Furthermore, two limiting members are respectively provided at both ends of the horizontal plate. The limiting members include a fixing seat and a fixing bolt. The fixing seat is fixedly connected to the horizontal plate, and the fixing bolt is threadedly connected to the fixing bolt to fix the position of the horizontal plate on the second slide rail.

[0014] Furthermore, a turntable is provided at the top of the rotating rod.

[0015] Furthermore, the horizontal plate is provided with a sliding groove that cooperates with the electrode connector and the temperature sensing element, for adjusting the position of the electrode connector and the temperature sensing element along the length direction of the horizontal plate.

[0016] Furthermore, it also includes a control board, which is electrically connected to the electrode connector and the temperature detection element.

[0017] Furthermore, the test assembly includes two sets of electrode connectors, each set of electrode connectors including a positive electrode connector and a negative electrode connector, and the two sets of electrode connectors are arranged longitudinally on the horizontal plate.

[0018] Furthermore, the top seat has through holes at its four corners, and self-lubricating composite bushings are embedded in the through holes. The lifting rod passes through the self-lubricating composite bushings and forms a sliding pair with the top seat, which is used to realize the vertical movement of the top seat along the axial direction of the lifting rod.

[0019] The battery self-discharge heat insulation box described in this utility model has the following advantages:

[0020] The battery clamp can be inserted into / removed from the housing through the first sealed door and the first slide rail that mates with the battery clamp. The second sealed door is used for fine adjustment of the test assembly. The adjustment window on the top allows for fine-tuning of the height of the internal top mount and the position of the test assembly during testing or preparation, without having to fully open the first sealed door, making operation more convenient and reducing environmental impact. Users adjust the top mount along the lifting rod by turning the adjusting window and rotating the screw rod in conjunction with the threaded sleeve, allowing for precise height adjustment of the entire test assembly. This adapts to batteries or battery clamps of different heights and sizes, offering strong versatility. The frame structure, consisting of a base, multiple lifting rods, and a fixed frame, provides robust support, ensuring the stability of the test assembly during lifting and testing, and reducing vibration interference.

[0021] After the top seat is raised and lowered to the appropriate position, multiple test components are arranged horizontally on the top seat. The design of multiple independent test components allows multiple batteries or battery packs to be connected and self-discharge tested simultaneously. The operator can adjust the position of the electrode connectors and temperature detection elements that are slidably installed on the horizontal plate through the adjustment window. This allows the electrode connectors to slide to different positions to correspond to the electrode positions of different battery sizes and models, thereby enabling the electrode connectors to contact and connect with the battery electrodes to complete the self-discharge test. At the same time, the temperature detection element can also slide to the appropriate position on the battery to measure the temperature. Therefore, this battery self-discharge insulation box is suitable for batteries of different sizes and models, greatly saving manufacturers' costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of the battery self-discharge heat insulation box according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the battery self-discharge heat insulation box according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the testing device according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the test component according to an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Housing; 11. First sealed door; 12. Second sealed door; 2. Testing device; 21. Base; 211. First slide rail; 212. Limiting component; 2121. Fixing component; 2122. Fixing screw; 22. Lifting rod; 23. Top seat; 231. Second slide rail; 232. Self-lubricating composite bushing; 24. Rotary rod; 241. Turntable; 25. Fixing frame; 251. First crossbeam; 252. Second crossbeam; 253. Longitudinal beam; 26. Testing assembly; 261. Horizontal plate; 262. Electrode connector; 2621. Positive electrode connector; 2622. Negative electrode connector; 263. Temperature detection element; 265. Limiting component; 2651. Fixing seat; 2652. Fixing bolt; 27. Control board; 28. Battery; 29. ​​Battery clamp. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 4 As shown, this utility model provides a battery 28 self-discharge heat insulation box, comprising:

[0030] The box body 1 has a loading and unloading window on its side and a first sealing door 11 corresponding to the loading and unloading window. The box body 1 also has an adjustment window on its top and a second sealing door 12 corresponding to the adjustment window.

[0031] The testing device 2 includes a base 21, four lifting rods 22 vertically fixed to the base 21, a top seat 23 slidably connected to the lifting rods 22, and a rotary rod 24 that drives the top seat 23 to rise and fall.

[0032] The top seat 23 is provided with a threaded sleeve that cooperates with the rotating rod 24 at its center. The tops of the four lifting rods 22 are fixed to the fixed frame 25. The rotating rod 24 passes through and is installed in the bearing seat provided at the center of the fixed frame 25.

[0033] The top seat 23 is provided with a plurality of test components 26 arranged horizontally. Each test component 26 includes a horizontal plate 261 and an electrode connector 262 and a temperature detection element 263 slidably mounted on the horizontal plate 261.

[0034] The base 21 is provided with a first slide rail 211 that cooperates with the battery clamp 29.

[0035] The design of the first sealing door 11 and the second sealing door 12 minimizes temperature disturbances to the internal insulation environment caused by door opening operations. The first sealing door 11 is used to insert / remove the battery clamp 29, and the second sealing door 12 is used for fine adjustment of the test assembly 26. The adjustment window on the top allows for fine adjustment of the height of the internal top seat 23 and the position of the test assembly 26 during testing or preparation, without having to fully open the first sealing door 11, making operation more convenient and reducing environmental impact. The user can drive the top seat 23 up and down along the lifting rod 22 by turning the adjustment window and the screw sleeve, so that the height of the entire test assembly 26 can be precisely adjusted to accommodate batteries 28 or battery clamps 29 of different heights and sizes, making it highly versatile.

[0036] The frame structure, consisting of a base 21, multiple lifting rods 22, and a fixing bracket 25, provides stable support, ensuring the stability of the test assembly 26 during lifting and testing, and reducing vibration interference. After the top seat 23 is raised to the appropriate position, the design of multiple independent test assemblies 26 allows for the simultaneous connection and self-discharge testing of multiple batteries 28 or battery packs, significantly improving testing efficiency.

[0037] The battery clamp 29 can be inserted into / removed from the housing 1 through the first sealed door 11 and the first slide rail 211 that mates with the battery clamp 29. The second sealed door 12 is used for fine adjustment of the test assembly 26. The adjustment window on the top allows for fine adjustment of the height of the internal top seat 23 and the position of the test assembly 26 during the testing process or preparation stage without having to fully open the first sealed door 11, making operation more convenient and reducing environmental impact. The user can drive the top seat 23 to rise and fall along the lifting rod 22 by turning the screw rod 24 in conjunction with the threaded sleeve through the adjustment window, so that the height of the entire test assembly 26 can be precisely adjusted to accommodate batteries 28 or battery clamps 29 of different heights and sizes, making it highly versatile. The frame structure consisting of the base 21, multiple lifting rods 22, and fixing frame 25 provides stable support, ensuring the stability of the test assembly 26 during lifting and testing, and reducing vibration interference.

[0038] After the top seat 23 is raised or lowered to the appropriate position, multiple test components 26 arranged horizontally are installed on the top seat 23. The design of multiple independent test components 26 allows for the simultaneous connection and self-discharge testing of multiple batteries 28 or battery packs 29. Operators can adjust the positions of the electrode connectors 262 and temperature sensing elements 263, which are slidably mounted on the horizontal plate 261, through the adjustment window. This allows the electrode connectors 262 to slide to different positions corresponding to the electrode positions of batteries 28 of different sizes and models, thereby enabling contact connection between the electrode connectors 262 and the electrodes of the battery 28 to complete the self-discharge test. Simultaneously, the temperature sensing element 263 can also slide to the appropriate position on the battery 28 to measure the temperature. Therefore, this battery self-discharge insulation box is suitable for batteries 28 of different sizes and models, significantly reducing manufacturer costs.

[0039] Furthermore, the fixing frame 25 includes a first crossbeam 251, a second crossbeam 252, and a longitudinal beam 253. The two ends of the longitudinal beam 253 are respectively fixed to the center of the first crossbeam 251 and the second crossbeam 252 to form an I-shaped structure. The tops of the two lifting rods 22 on one side are respectively fixed to the two ends of the first crossbeam 251, and the tops of the two lifting rods 22 on the other side are respectively fixed to the two ends of the second crossbeam. The longitudinal beam 253 has a bearing seat at its center for mounting the rotating rod 24.

[0040] The first crossbeam 251, the second crossbeam 252 and the longitudinal beam 253 form an I-shaped structural frame, which can work with the base 21 to fix the position and axis of the lifting rod 22, so as to prevent the lifting rod 22 from shifting and affecting the lifting of the top seat 23. The bearing seat provided in the center of the longitudinal beam 253 can accurately constrain the radial runout of the rotating rod 24 (≤0.02mm) and prevent the threaded sleeve from wearing out.

[0041] Furthermore, the top seat 23 is provided with a second slide rail 231 that cooperates with multiple horizontal plates 261 for adjusting the distance between each horizontal plate 261 laterally.

[0042] The second slide rail 231 allows the entire test assembly 26 (the horizontal plate 261 and its electrode connectors 262 and temperature sensing element 263) to move laterally as a whole, facilitating alignment of the test assembly 26 with different columns or areas of the battery clamp 29 below. This adapts to different battery clamp arrangements and different battery models 28, improving flexibility. Each test assembly 26 can move independently on its second slide rail 231, providing convenience for testing in different areas.

[0043] Furthermore, two limiting members 265 are respectively provided at both ends of the horizontal plate 261. The limiting member 265 includes a fixing seat 2651 and a fixing bolt 2652. The fixing seat 2651 is fixedly connected to the horizontal plate 261, and the fixing bolt 2652 is threadedly connected to the fixing bolt 2652 to fix the horizontal plate 261 in the position of the second slide rail 231.

[0044] After the test assembly 26 moves to the target position on the second slide rail 231, the fixing seat 2651 and the fixing bolt 2652 can reliably fix it to the top seat 23, preventing the test assembly 26 from shifting laterally during the test and ensuring that the electrode connector 262 and the temperature detection element 263 are always aligned with the target point of the battery 28. Operation is simple: the screw tightening method is simple and easy.

[0045] Furthermore, a turntable 241 is provided at the top of the rotating rod 24.

[0046] The turntable 241 provides a larger lever arm, making it easier and less strenuous for the user to adjust the height of the top seat 23 by rotating the lever 24 from the adjustment window. Especially under heavy loads, the turntable 241 facilitates the application of force, and in conjunction with the threaded drive, it can achieve more precise height adjustment control.

[0047] Furthermore, the horizontal plate 261 is provided with a sliding groove that cooperates with the electrode connector 262 and the temperature sensing element 263, for adjusting the position of the electrode connector 262 and the temperature sensing element 263 along the length direction of the horizontal plate 261.

[0048] The sliding groove allows the electrode connector 262 and temperature sensing element 263 to move as a whole along the length of the horizontal plate 261 (i.e., the longitudinal direction of the housing 1), facilitating the alignment of the electrode connector 262 and temperature sensing element 263 with the electrodes and temperature measuring area of ​​the battery 28 below, adapting to different battery models and improving flexibility. Each electrode connector 262 and temperature sensing element 263 can move independently on its sliding groove.

[0049] Furthermore, the self-discharge insulation box of battery 28 also includes a control board 27, which is electrically connected to the electrode connector 262 and the temperature detection element 263.

[0050] The control board 27 is the core of automation. It controls the charging, discharging, and resting of the battery 28. Connected to the electrode connector 262, the control board 27 automatically and periodically collects voltage and current data from the battery 28 for calculating the self-discharge rate. Electrically connected to the temperature detection element 263, the control board 27 automatically collects the temperature of the battery 28. The control board 27 records and stores test data for subsequent analysis, export, and report generation. Automatic control reduces human error, ensures consistency in the testing process (such as charging cutoff conditions, resting time, and measurement intervals), and improves the reliability and comparability of test results.

[0051] Furthermore, the test assembly 26 includes two sets of electrode connectors 262, each set of electrode connectors 262 including a positive electrode connector 2621 and a negative electrode connector 2622, and the two sets of electrode connectors 262 are arranged longitudinally on the horizontal plate 261.

[0052] Each test assembly 26 contains two independent sets of electrodes (positive + negative), meaning that a single horizontal plate 261 can simultaneously connect and test two batteries 28 (or two parallel / series small units). This further multiplies the testing capability of a single test assembly 26. The two sets of electrodes are arranged along the length of the battery 28, a configuration that adapts to common battery arrangements (such as two columns) on the battery holder 29. Combined with the longitudinal movement of the horizontal plate 261 on the second slide rail 231, this makes positioning more flexible and efficient. It facilitates independent or comparative testing of two longitudinally adjacent batteries 28 on the same horizontal plate 261.

[0053] Furthermore, the top seat 23 has through holes at its four corners, and self-lubricating composite bushings 232 are installed in the through holes. The lifting rod 22 passes through the self-lubricating composite bushings 232 and forms a sliding pair with the top seat 23 to realize the vertical movement of the top seat 23 along the axial direction of the lifting rod 22.

[0054] The top seat 23 is slidably connected to the lifting rod 22 through the self-lubricating composite bushing 232, which can reduce friction during the lifting process. The self-lubricating composite bushing 232 (PTFE-copper powder) has a friction coefficient μ≤0.06 and a lifespan of 6000 lifting cycles in a 60℃ heat insulation environment. The spiral oil reservoir design extends the grease replenishment cycle to 6 months.

[0055] Furthermore, the testing device 2 includes four testing components 26, with four horizontal plates 261 arranged horizontally.

[0056] The four test components 26 can simultaneously connect to and test four groups of batteries 28 (each group may contain multiple batteries 28), significantly increasing the sample size for a single test and improving testing efficiency. The "horizontal arrangement" makes the layout compact and reasonable.

[0057] Furthermore, the base 21 is also provided with two limiting members 212. The limiting members 212 include a fixing member 2121 and a fixing screw 2122. The fixing member 2121 is fixedly connected to the base 21 and located on one side of the first slide rail 211. The fixing screw 2122 is threadedly connected to the fixing member 2121 and is used to fix the position of the battery clamp 29.

[0058] After the battery clamp 29 is pushed into the correct position via the first slide rail 211, tightening the fixing screw 2122 can abut against both sides of the battery clamp 29, firmly locking the battery clamp 29 in this position, preventing the battery clamp 29 from moving accidentally due to vibration or operation during the test, ensuring test stability and safety. The screw locking method has a simple structure, low cost, convenient operation, and reliable locking force.

[0059] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A battery self-discharge heat insulation box, characterized in that, include: The box body has a loading and unloading window and a first sealing door corresponding to the loading and unloading window on its side, and an adjustment window and a second sealing door corresponding to the adjustment window on its top. The testing device includes a base, four lifting rods vertically fixed to the base, a top seat slidably connected to the lifting rods, and a rotary rod that drives the top seat to rise and fall. The top seat is provided with a threaded sleeve that mates with the rotating rod at its center. The tops of the four lifting rods are fixed to the fixed frame. The rotating rod passes through and is installed in the bearing seat provided at the center of the fixed frame. The top seat is provided with multiple test components arranged horizontally. Each test component includes a horizontal plate and an electrode connector and a temperature detection element that are slidably installed on the horizontal plate. The base is provided with a first slide rail that engages with the battery clamp.

2. The battery self-discharge heat insulation box according to claim 1, characterized in that, The fixing frame includes a first crossbeam, a second crossbeam, and a longitudinal beam. The two ends of the longitudinal beam are respectively fixed to the center of the first crossbeam and the second crossbeam to form an I-shaped structure. The tops of the two lifting rods on one side are respectively fixed to the two ends of the first crossbeam, and the tops of the two lifting rods on the other side are respectively fixed to the two ends of the second crossbeam. The longitudinal beam has a bearing seat at its center for mounting the rotating rod.

3. The battery self-discharge heat insulation box according to claim 1, characterized in that, The top seat is provided with a second slide rail that cooperates with the plurality of horizontal plates, for adjusting the distance between the horizontal plates laterally.

4. The battery self-discharge heat insulation box according to claim 3, characterized in that, Two limiting members are respectively provided at both ends of the horizontal plate. The limiting members include a fixing seat and a fixing bolt. The fixing seat is fixedly connected to the horizontal plate, and the fixing bolt is threadedly connected to the fixing bolt to fix the position of the horizontal plate on the second slide rail.

5. The battery self-discharge heat insulation box according to claim 1, characterized in that, A turntable is provided at the top of the rotating rod.

6. The battery self-discharge heat insulation box according to claim 1, characterized in that, The horizontal plate is provided with a sliding groove that cooperates with the electrode connector and the temperature sensing element, for adjusting the position of the electrode connector and the temperature sensing element along the length direction of the horizontal plate.

7. The battery self-discharge heat insulation box according to claim 1, characterized in that, It also includes a control board, which is electrically connected to the electrode connector and the temperature detection element.

8. The battery self-discharge heat insulation box according to claim 1, characterized in that, The test assembly includes two sets of electrode connectors, each set of electrode connectors including a positive electrode connector and a negative electrode connector, and the two sets of electrode connectors are arranged longitudinally on the horizontal plate.

9. The battery self-discharge heat insulation box according to claim 1, characterized in that, The top seat has through holes at its four corners, and self-lubricating composite bushings are embedded in the through holes. The lifting rod passes through the self-lubricating composite bushings and forms a sliding pair with the top seat, which is used to realize the vertical movement of the top seat along the axial direction of the lifting rod.

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