High-precision lithium cell tester for measuring voltage and internal resistance

Abstract

The utility model is suitable for the technical field, and provides a high-precision voltage and internal resistance measurement lithium cell tester, which comprises a detection box, a movable rail, a voltage and internal resistance measurement device, a voltage and internal resistance measurement device and a voltage and internal resistance measurement device, the moving plate is arranged in the moving rail in a matched manner; the supporting plate is arranged at the upper end of the moving plate; the positioning mechanism is arranged between the moving rail and the moving plate; according to the high-precision voltage and internal resistance measurement lithium cell tester, under the use of a first driving motor, a first gear and a second gear in engaged connection with one end of the first gear can rotate simultaneously, so that a sliding block in a sliding groove formed in the surface of a telescopic sleeve moves along a track, and then a telescopic rod mounted in the telescopic sleeve extends; and therefore, the supporting plate on which the lithium battery cell is placed is positioned, and subsequent testing is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to a high-precision voltage internal resistance measurement lithium battery tester. Background Art

[0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Its manufacturing process is in a continuous development process, so various aspects of performance need to be continuously tested.

[0003] The "automatic testing device for lithium batteries" with authorization announcement number: CN209821359U and authorization date: 2019.12.20 includes a thermal shock mechanism, a hot bin is provided inside the thermal shock mechanism, an auxiliary frame is provided on one side of the hot bin, a cold bin is provided on the other side of the hot bin, a No. 2 motor is provided on one side of the cold bin, a transmission belt is provided on the front end outer surface of the No. 2 motor, an isolation curtain is provided on the outer surface of one side of the hot bin and the cold bin, an overcharging mechanism is provided on the upper outer surface of the thermal shock mechanism, and a protective cover is provided on the upper outer surface of the overcharging mechanism. The automatic testing device for lithium batteries described in the utility model is provided with a thermal shock mechanism, an impact block and an overcharging mechanism, which can conveniently realize thermal shock testing in a temperature difference environment, and can more conveniently carry out heavy object impact experiments, and can also more safely and directly carry out simulated observations of overcharging, bringing better prospects for use.

[0004] However, there are still some defects in the above-mentioned existing technical solutions. The existing lithium battery tester has a simple structure and is not convenient for automatically positioning the lithium battery, which leads to test errors and affects subsequent results. Therefore, we propose a high-precision voltage internal resistance measurement lithium battery tester to solve the above-mentioned problems. Utility Model Content

[0005] The utility model provides a high-precision voltage internal resistance measurement lithium battery tester, aiming to solve the problem of positioning the lithium battery tester.

[0006] The utility model is implemented as follows: a high-precision voltage internal resistance measurement lithium battery tester comprises: a detection box: a moving rail opened inside the detection box; a moving plate arranged inside the moving rail and installed in coordination; a support plate arranged on the upper end of the moving plate; a positioning mechanism arranged between the moving rail and the moving plate; wherein the positioning mechanism comprises: a first driving motor arranged in the middle of the moving rail; a first gear arranged at the output end of the first driving motor; a second gear arranged at one end of the first gear in meshing connection; and a telescopic sleeve arranged at one end of the second gear.

[0007] Preferably, the positioning mechanism also includes: a slide groove provided on the surface of the telescopic sleeve; a slider installed in cooperation with the slide groove; a telescopic rod connected to one end of the slider; a telescopic rod provided inside the telescopic sleeve; a positioning groove provided on the outside of the telescopic rod; and a positioning groove provided at one end of the movable plate.

[0008] Preferably, it comprises: a detection box: a groove provided on the surface of the support plate; a clamping mechanism provided inside the groove; a cylinder penetrating one end of the detection box; and an infrared detection component provided at one end of the cylinder.

[0009] Preferably, the inner diameter of the slide groove matches the outer diameter of the slider, and the surface of the slide groove is distributed in an "S" shape.

[0010] Preferably, the clamping mechanism includes a second drive motor, a forward and reverse threaded rod, a moving block and a clamping plate. The second drive motor is arranged inside the groove, and a forward and reverse threaded rod is installed at the output end of the second drive motor. One end of the forward and reverse threaded rod is connected to the clamping plate through the moving block.

[0011] Preferably, the second driving motor, the forward and reverse threaded rods, the moving block and the clamping plate are arranged in two groups inside the groove, and the two groups of clamping mechanisms are distributed in an "X" shape.

[0012] Preferably, the infrared detection component forms a telescopic structure through a cylinder and a detection box, and the center line of the infrared detection component and the center line of the support plate are arranged in a straight line.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] By setting a positioning mechanism, the positioning function of the lithium battery tester body is added. First, the lithium battery is placed in the support plate and fixed by the clamping mechanism. Then, under the use of the first driving motor, the first gear and the second gear meshingly connected to one end of the first gear can be rotated at the same time, so that the slider in the slide groove opened on the surface of the telescopic sleeve moves along the track, and then the telescopic rod installed in the telescopic sleeve is extended to connect with the positioning groove opened on the surface of the moving plate, so as to position the support plate with the lithium battery placed thereon, which is convenient for subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the movable rail and movable plate of the utility model;

[0017] Figure 3 It is a schematic diagram of the positioning mechanism structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the slider and telescopic rod of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the utility model.

[0020] In the figure: 1. detection box; 2. moving rail; 3. moving plate; 4. supporting plate; 5. positioning mechanism; 501. first driving motor; 502. first gear; 503. second gear; 504. telescopic sleeve; 505. slide groove; 506. slider; 507. telescopic rod; 508. positioning groove; 6. groove; 7. clamping mechanism; 701. second driving motor; 702. positive and negative threaded rod; 703. moving block; 704. clamping plate; 8. cylinder; 9. infrared detection component. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The utility model provides a high-precision voltage internal resistance measurement lithium battery tester, such as Figure 1-5 As shown, it includes: a detection box 1: a moving rail 2 opened inside the detection box 1; a moving plate 3 installed in the moving rail 2; a support plate 4 arranged at the upper end of the moving plate 3; a positioning mechanism 5 arranged between the moving rail 2 and the moving plate 3; wherein the positioning mechanism 5 includes: a first driving motor 501 arranged in the middle of the moving rail 2; a first gear 502 arranged at the output end of the first driving motor 501; a second gear 503 meshingly connected to one end of the first gear 502; and a telescopic sleeve 504 arranged at one end of the second gear 503.

[0024] It should be noted that due to the single structure of the lithium battery tester, there is currently a problem of poor positioning efficiency of the lithium battery tester. Therefore, in order to solve the problem of poor positioning efficiency of the existing lithium battery tester, this solution adds a positioning function to the main body of the lithium battery tester by setting a positioning mechanism 5.

[0025] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes: a detection box 1: a moving rail 2 opened inside the detection box 1; a moving plate 3 installed in the moving rail 2; a support plate 4 arranged at the upper end of the moving plate 3; a positioning mechanism 5 arranged between the moving rail 2 and the moving plate 3; wherein the positioning mechanism 5 includes: a first driving motor 501 arranged in the middle of the moving rail 2; a first gear 502 arranged at the output end of the first driving motor 501; a second gear 503 meshingly connected to one end of the first gear 502; and a telescopic sleeve 504 arranged at one end of the second gear 503.

[0026] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the positioning mechanism 5 also includes: a slide groove 505 provided on the surface of the telescopic sleeve 504; a slider 506 provided inside the slide groove 505 and installed in cooperation; a telescopic rod 507 connected to one end of the slider 506; the telescopic rod 507 provided inside the telescopic sleeve 504; a positioning groove 508 provided outside the telescopic rod 507; and a positioning groove 508 provided at one end of the movable plate 3.

[0027] In this embodiment, with the use of the first driving motor 501, the first gear 502 and the second gear 503 meshingly connected to one end of the first gear 502 can be rotated at the same time, so that the slider 506 in the slide groove 505 opened on the surface of the telescopic sleeve 504 moves along the track, and then the telescopic rod 507 installed inside the telescopic sleeve 504 is extended, so as to connect with the positioning groove 508 opened on the surface of the movable plate 3, and then the support plate 4 with the lithium battery cell is placed is positioned for subsequent testing.

[0028] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 5 As shown, it includes: a detection box 1; a groove 6 provided on the surface of a support plate 4; a clamping mechanism 7 provided inside the groove 6; a cylinder 8 penetrating through one end of the detection box 1; and an infrared detection component 9 provided at one end of the cylinder 8.

[0029] In a further preferred embodiment of the present invention, Figure 3 and Figure 4 As shown, the inner diameter of the slide groove 505 matches the outer diameter of the slider 506, and the surface of the slide groove 505 is distributed in an "S" shape.

[0030] In a further preferred embodiment of the present invention, Figure 2 and Figure 5 As shown, the clamping mechanism 7 includes a second driving motor 701, a forward and reverse threaded rod 702, a moving block 703 and a clamping plate 704. The second driving motor 701 is arranged inside the groove 6. The forward and reverse threaded rod 702 is installed at the output end of the second driving motor 701. One end of the forward and reverse threaded rod 702 is connected to the clamping plate 704 through the moving block 703.

[0031] In this embodiment, the lithium battery cell is placed on the surface of the support plate 4. With the use of two sets of second drive motors 701, the four sets of clamping plates 704 arranged on the surfaces of the two sets of positive and negative threaded rods 702 can be moved toward the lithium battery cell at the same time, so that the clamping plates 704 are attached to the surface of the lithium battery cell, thereby clamping and fixing the lithium battery cell.

[0032] In a further preferred embodiment of the present invention, Figure 2 and Figure 5 As shown, two groups of second driving motors 701, forward and reverse threaded rods 702, moving blocks 703 and clamping plates 704 are arranged inside the groove 6, and the two groups of clamping mechanisms 7 are distributed in an "X" shape.

[0033] In a further preferred embodiment of the present invention, Figure 1 As shown, the infrared detection component 9 forms a telescopic structure with the detection box 1 through the cylinder 8, and the center line of the infrared detection component 9 and the center line of the support plate 4 are arranged in a straight line.

[0034] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0035] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0036] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0037] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. High-precision voltage internal resistance measurement lithium battery tester, characterized in that: include: Detection box (1): A movable rail (2) provided inside the detection box (1); A movable plate (3) arranged and mounted in cooperation with the movable rail (2); A support plate (4) provided on the upper end of the movable plate (3); A positioning mechanism (5) provided between the movable rail (2) and the movable plate (3); Wherein, the positioning mechanism (5) comprises: A first driving motor (501) arranged in the middle of the movable rail (2); A first gear (502) provided at an output end of the first drive motor (501); a second gear (503) meshingly connected to one end of the first gear (502); and A telescopic sleeve (504) is provided at one end of the second gear (503).

2. The high-precision voltage internal resistance measurement lithium battery tester according to claim 1, characterized in that: The positioning mechanism (5) also includes: A sliding groove (505) provided on the surface of the telescopic sleeve (504); A sliding block (506) arranged inside the sliding groove (505) and mounted in a cooperative manner; A telescopic rod (507) connected to one end of the sliding block (506); A telescopic rod (507) disposed inside the telescopic sleeve (504); A positioning groove (508) provided outside the telescopic rod (507); A positioning groove (508) is provided at one end of the movable plate (3).

3. The high-precision voltage internal resistance measurement lithium battery tester according to claim 1, characterized in that: include: Detection box (1): A groove (6) provided on the surface of the support plate (4); A clamping mechanism (7) disposed inside the groove (6); A cylinder (8) provided at one end of the detection box (1) and extending therethrough; An infrared detection component (9) is arranged at one end of the cylinder (8).

4. The high-precision voltage internal resistance measurement lithium battery tester according to claim 2, characterized in that: The inner diameter of the slide groove (505) matches the outer diameter of the slider (506), and the surface of the slide groove (505) is arranged in an "S" shape.

5. The high-precision voltage internal resistance measurement lithium battery tester as claimed in claim 3, characterized in that: The clamping mechanism (7) comprises a second driving motor (701), a forward and reverse threaded rod (702), a moving block (703) and a clamping plate (704); the second driving motor (701) is arranged inside the groove (6); the forward and reverse threaded rod (702) is installed at the output end of the second driving motor (701); one end of the forward and reverse threaded rod (702) is connected to the clamping plate (704) via the moving block (703).

6. The high-precision voltage internal resistance measurement lithium battery tester according to claim 5, characterized in that: Two groups of the second driving motor (701), the forward and reverse threaded rods (702), the moving block (703) and the clamping plate (704) are arranged inside the groove (6), and the two groups of clamping mechanisms (7) are arranged in an "X" shape.

7. The high-precision voltage internal resistance measurement lithium battery tester according to claim 3, characterized in that: The infrared detection component (9) forms a telescopic structure with the detection box (1) through the cylinder (8), and the center line of the infrared detection component (9) and the center line of the support plate (4) are arranged in a straight line.

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