Measuring device for calculating internal resistance of lead-acid storage battery by adopting alternating current method

Abstract

The invention discloses a measuring device for calculating the internal resistance of a lead-acid storage battery by adopting an alternating current method, and relates to the technical field of storage battery detection. The device comprises a workbench and a measuring instrument body placed on the upper surface of the workbench. A supporting plate is horizontally fixed to the upper surface of the workbench. The two opposite sides of the supporting plate are horizontally connected with conveying mechanisms. The two conveying mechanisms are horizontally provided with material pushing mechanisms used for pushing the storage batteries on the conveying mechanisms to the supporting plates. Clamping mechanisms for clamping the storage battery are arranged on the two pushing mechanisms; a lifting mechanism is vertically arranged between the two clamping mechanisms; and a measuring probe connected with the measuring instrument body is vertically arranged on the lifting mechanism. The internal resistance measuring device is reasonable in structural design and convenient to use, and the internal resistance measuring efficiency of the lead-acid storage battery is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of battery detection, and in particular relates to a measuring device for calculating the internal resistance of a lead-acid battery by adopting an alternating current method. Background Art

[0002] The internal resistance of a lead-acid battery refers to the resistance of current passing through the battery due to factors such as electrode active materials, electrolyte and diaphragm. The internal resistance includes three parts: electrode resistance, electrolyte resistance and diaphragm resistance. The size of the internal resistance reflects the performance of the battery. The smaller the internal resistance, the better the battery's charge and discharge performance. Measuring the internal resistance is one of the important indicators for evaluating the performance of lead-acid batteries, and the main methods for measuring the internal resistance of lead-acid batteries are the DC discharge method and the AC current method.

[0003] In the prior art, the measurement method of calculating the internal resistance of a lead-acid battery using the alternating current method is usually to manually apply an alternating current power supply to the battery, then measure the current and voltage of the battery, and finally calculate the resistance to obtain the internal resistance of the lead-acid battery. The above measurement method has the following disadvantages: since it is necessary to manually connect the battery to be tested to the alternating current power supply, and manually distinguish between qualified batteries and unqualified batteries after the battery is measured, this not only reduces the efficiency of measuring the internal resistance of the lead-acid battery, but also increases the labor intensity of the workers, which is not conducive to improving the production efficiency of the lead-acid battery. Therefore, it is urgent to study a measuring device that uses the alternating current method to calculate the internal resistance of a lead-acid battery in order to solve the above problems. Summary of the invention

[0004] The present invention provides a measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method, the purpose of which is to solve the technical problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method, comprising a workbench and a measuring instrument body placed on the upper surface of the workbench; a support plate is horizontally fixed to the upper surface of the workbench; conveying mechanisms are horizontally connected to opposite sides of the support plate; pushing mechanisms for pushing batteries on the conveying mechanisms onto the support plate are horizontally installed on the two conveying mechanisms; clamping mechanisms for clamping batteries are installed on the two pushing mechanisms; a lifting mechanism is vertically installed between the two clamping mechanisms; and a measuring probe connected to the measuring instrument body is vertically installed on the lifting mechanism.

[0007] As a preferred technical solution of the present invention, the conveying mechanism includes a pair of beams fixed horizontally side by side on the upper surface of the workbench; a feeding notch is provided on the upper edge of a beam close to the support plate; the upper surface of the feeding notch is flush with the upper surface of the support plate; a pair of rollers are rotatably connected side by side between the two beams; the output shaft of one of the rollers is coaxially fixed to the output shaft of a servo motor; the servo motor is fixed on a beam; and the two rollers are connected by a conveyor belt transmission.

[0008] As a preferred technical solution of the present invention, the pushing mechanism includes a supporting slat vertically fixed on another crossbeam; a first cylinder is horizontally fixed to the upper end of the supporting slat; the output shaft of the first cylinder slides through the supporting slat and is vertically fixed with a pushing plate.

[0009] As a preferred technical solution of the present invention, the clamping mechanism includes a first support block and a second support block respectively fixed at opposite side edges of a push plate, and the first support block is arranged at one side edge of the push plate close to the input end of the conveying mechanism; the first support block and the second support block are both arranged between the support slats and the push plate; the first support block and the second support block are both connected to the relative outer sides with clamping slats perpendicular to the cross beam.

[0010] As a preferred technical solution of the present invention, a first rotating shaft parallel to the crossbeam is fixed at one end of the clamping strip; the first rotating shaft is rotatably connected to the second support block; one end of the first rotating shaft is coaxially fixed to the output end of a first rotating cylinder; the first rotating cylinder is fixed to a side surface of the pushing plate close to the supporting strip.

[0011] As a preferred technical solution of the present invention, a third support block is arranged between the first support block and the second support block; the third support block is fixed to a side surface of the push plate close to the support strip; a cylindrical cam parallel to the first rotating shaft is rotatably connected to the third support block; one end of the cylindrical cam is coaxially fixed to the output end of a second rotating cylinder; the second rotating cylinder is fixed to a side surface of the push plate close to the support strip; an axial orientation groove is provided on the other end surface of the cylindrical cam; a spline shaft is slidably inserted in the directional groove; a rotating sleeve is provided on the sliding sleeve of the spline shaft ; The rotating sleeve is rotatably connected to the first supporting block; a second rotating shaft corresponding to another clamping strip is coaxially fixed to the end of the spline shaft away from the cylindrical cam; one end of the other clamping strip is vertically fixed to the second rotating shaft; an annular guide rail is coaxially fixed to the end of the second rotating shaft away from the spline shaft; a slider is slidably connected to the annular guide rail; a push-pull rod parallel to the second rotating shaft is fixed to the slider; the push-pull rod is slidably inserted into the first supporting block; a guide column is radially fixed to the end of the push-pull rod away from the slider; one end of the guide column is slidably inserted into the working groove of the cylindrical cam.

[0012] As a preferred technical solution of the present invention, a negative pressure seat is fixed to the other end of the two clamping strips; the relative outer sides of the two negative pressure seats are vertically connected to the vacuum joints; and the relative inner sides of the two negative pressure seats are evenly distributed with multiple adsorption holes.

[0013] As a preferred technical solution of the present invention, the lifting mechanism includes a pair of pillars vertically fixed side by side on the upper surface of the workbench; the two pillars are respectively arranged on opposite sides of the support plate; the upper ends of the two pillars are connected by a mounting strip; a second cylinder is vertically fixed on the upper surface of the mounting strip; the output end of the second cylinder slides through the mounting strip and is horizontally fixed with a lifting strip parallel to the mounting strip.

[0014] As a preferred technical solution of the present invention, the measuring probe includes a pair of supporting columns vertically connected side by side to the lifting strips; the lower ends of the two supporting columns are vertically sleeved with positioning tubes; power terminals are fixed in the two positioning tubes; the two power terminals are respectively connected to the measuring instrument body through wires.

[0015] As a preferred technical solution of the present invention, a pair of through grooves are arranged side by side on the upper surface of the lifting strip; the two bearing columns are respectively clearance-fitted in the two through grooves; the upper ends of the two bearing columns are threadedly fitted with limiting sleeves, and the two bearing columns are fixedly sleeved with retaining rings; the limiting sleeves and retaining rings are respectively arranged on the upper and lower sides of the lifting strip; the lower surfaces of the two retaining rings are vertically connected with tensioning springs; the two tensioning springs are respectively sleeved on the outer circumferences of the two bearing columns; the lower ends of the two tensioning springs are respectively fixed on the upper ends of the two positioning cylinders; the two positioning cylinders are respectively slidably fitted with the two bearing columns.

[0016] The present invention has the following beneficial effects:

[0017] The present invention arranges a plurality of lead-acid batteries side by side on a conveying mechanism. When a lead-acid battery is conveyed to a position corresponding to a pushing mechanism on a conveying mechanism, a clamping mechanism on a pushing mechanism is used to clamp the lead-acid battery, and the clamped lead-acid battery is pushed onto a support plate by a pushing mechanism. Then, a measuring probe is driven downward by a lifting mechanism to cause the measuring probe to collide with a terminal of the lead-acid battery, thereby connecting the lead-acid battery to a measuring instrument body. Then, the measuring instrument body uses an alternating current method to measure and calculate the internal resistance of the lead-acid battery. If the internal resistance of the lead-acid battery is qualified, a pushing mechanism is used. The material mechanism pulls the lead-acid battery from the support plate back to a conveying mechanism, and the conveying mechanism continues to convey qualified lead-acid batteries. If the internal resistance measurement of the lead-acid battery is unqualified, a clamping mechanism releases the lead-acid battery, and another pushing mechanism drives another clamping mechanism to approach the lead-acid battery, and then the other clamping mechanism clamps the lead-acid battery, and then the lead-acid battery is pulled to another conveying mechanism through another pushing mechanism. The conveying mechanism conveys unqualified lead-acid batteries, which not only effectively improves the internal resistance measurement efficiency of the lead-acid battery, but also reduces the labor intensity of workers, which is beneficial to the improvement of the production efficiency of lead-acid batteries.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 The present invention is a schematic structural diagram of a measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method.

[0021] Figure 2 for Figure 1 Top view of the structure.

[0022] Figure 3 It is a schematic diagram of the relative positions among the measuring instrument body, the support plate and the conveying mechanism of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the conveying mechanism of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the connection between the pushing mechanism and the clamping mechanism of the present invention.

[0025] Figure 6It is a structural schematic diagram of the clamping mechanism of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the connection between the clamping strip and the first rotating cylinder of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the connection between the clamping strip and the cylindrical cam of the present invention.

[0028] Fig. 9 It is a schematic diagram of the structure of the connection between the cylindrical cam and the slider of the present invention.

[0029] Fig.10 It is a schematic diagram of the structure of the connection between the spline shaft and the annular guide rail of the present invention.

[0030] Fig.11 It is a schematic structural diagram of the connection between the lifting mechanism and the measuring probe of the present invention.

[0031] Fig.12 It is a schematic diagram of the structure of the measuring probe of the present invention.

[0032] Fig.13 It is a schematic diagram of the structure of the connection between the bearing column and the positioning cylinder of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1- workbench, 2- measuring instrument body, 3- support plate, 4- conveying mechanism, 5- pushing mechanism, 6- clamping mechanism, 7- lifting mechanism, 8- measuring probe, 401- crossbeam, 402- feeding gap, 403- roller, 404- servo motor, 405- conveyor belt, 501- supporting slat, 502- first cylinder, 503- pushing plate, 601- first supporting block, 602- second supporting block, 603- clamping slat, 604- first rotating shaft, 605- first rotating cylinder, 606- third supporting block, 607- cylindrical cam, 608 -second rotating cylinder, 609-directional groove, 610-spline shaft, 611-rotating sleeve, 612-second rotating shaft, 613-annular guide rail, 614-slider, 615-push-pull rod, 616-guide column, 617-negative pressure seat, 618-exhaust joint, 619-adsorption hole, 701-pillar, 702-mounting strip, 703-second cylinder, 704-lifting strip, 705-through groove, 801-bearing column, 802-positioning cylinder, 803-electrical terminal, 804-wire, 805-limiting sleeve, 806-blocking ring, 807-tensioning spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] See also Figure 1-3 As shown, the present invention is a measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method, comprising a workbench 1 and a measuring instrument body 2 placed on the upper surface of the workbench 1; a support plate 3 is horizontally bolted to the upper surface of the workbench 1; conveying mechanisms 4 are horizontally connected to opposite sides of the support plate 3; pushing mechanisms 5 for pushing the battery on the conveying mechanism 4 to the support plate 3 are horizontally installed on the two conveying mechanisms 4; clamping mechanisms 6 for clamping the battery are installed on the two pushing mechanisms 5; a lifting mechanism 7 is vertically installed between the two clamping mechanisms 6; a measuring probe 8 connected to the measuring instrument body 2 is vertically installed on the lifting mechanism 7; the measuring instrument body 2 is a conventional component in this field, which includes an AC power supply, an oscilloscope, a computer, etc. When in use, a plurality of lead-acid batteries are placed side by side on a conveying mechanism 4. When a lead-acid battery is conveyed to a position corresponding to a pushing mechanism 5 on a conveying mechanism 4, a clamping mechanism 6 on a pushing mechanism 5 is used to clamp the lead-acid battery, and the clamped lead-acid battery is pushed onto a support plate 3 by a pushing mechanism 5, and then a measuring probe 8 is driven downward by a lifting mechanism 7 to cause the measuring probe 8 to collide with the terminal of the lead-acid battery, so as to achieve connection between the lead-acid battery and a measuring instrument body 2, and then the measuring instrument body 2 uses an alternating current method to measure and calculate the internal resistance of the lead-acid battery. If the internal resistance measurement of the lead-acid battery is qualified, a pushing mechanism 5 pulls the lead-acid battery from the support plate 3 back to a conveying mechanism 4, and the conveying mechanism 4 is qualified. The lead-acid battery continues to be conveyed. If the internal resistance measurement of the lead-acid battery is unqualified, a clamping mechanism 6 releases the lead-acid battery, and another pushing mechanism 5 drives another clamping mechanism 6 to approach the lead-acid battery, and then the other clamping mechanism 6 clamps the lead-acid battery, and then the lead-acid battery is pulled to another conveying mechanism 4 through another pushing mechanism 5. The conveying mechanism 4 conveys the unqualified lead-acid batteries, which not only effectively improves the internal resistance measurement efficiency of the lead-acid battery, but also reduces the labor intensity of the workers, which is conducive to the improvement of the production efficiency of the lead-acid battery; in addition, it should be noted that the method of measuring the internal resistance of the lead-acid battery by the measuring instrument body 2 using the alternating current method belongs to the conventional technical means in this field, which is well known to those skilled in the art and is not necessary to elaborate here.

[0038] Among them Figure 3-4As shown, the conveying mechanism 4 includes a pair of horizontal beams 401 connected to the upper surface of the workbench 1 by bolts in parallel; a feeding notch 402 is provided on the upper edge of a beam 401 close to the support plate 3; the upper surface of the feeding notch 402 is flush with the upper surface of the support plate 3; a pair of rollers 403 are connected in parallel and rotation between the two beams 401; the output shaft of one roller 403 is coaxially fixed to the output shaft of a servo motor 404; the servo motor 404 is bolted to a beam 401; the two rollers 403 are connected by a conveyor belt 405. When in use, the rollers 403 are driven to rotate intermittently by the servo motor 404, so that the conveyor belt 405 can convey the lead-acid battery.

[0039] Among them Figure 5-6 As shown, the push mechanism 5 includes a support strip 501 connected to another crossbeam 401 by vertical bolts; the upper end of the support strip 501 is horizontally bolted to a conventional first cylinder 502 in the art; the output shaft of the first cylinder 502 slides through the support strip 501 and is vertically bolted to a push plate 503. When in use, after the lead-acid battery is transported to a position corresponding to the push plate 503, the push plate 503 is driven by the first cylinder 502 to move linearly, thereby pushing the lead-acid battery from the conveyor belt 405 to the support plate 3 through the feed notch 402.

[0040] Embodiment 2:

[0041] Based on Example 1, Figure 5-10As shown, the clamping mechanism 6 includes a first support block 601 and a second support block 602 which are respectively bolted to the opposite sides of the push plate 503, and the first support block 601 is arranged at one side of the push plate 503 close to the input end of the conveying mechanism 4; the first support block 601 and the second support block 602 are both arranged between the support strip 501 and the push plate 503; the first support block 601 and the second support block 602 are connected to the opposite outer sides thereof with a clamping strip 603 which is perpendicular to the cross beam 401; one end of a clamping strip 603 is bolted to a first rotating shaft which is parallel to the cross beam 401 604; the first rotating shaft 604 is rotatably connected to the second supporting block 602; one end of the first rotating shaft 604 is coaxially fixed to the output end of a conventional first rotating cylinder 605 in the field; the first rotating cylinder 605 is bolted to a side surface of the push plate 503 close to the supporting strip 501; a third supporting block 606 is provided between the first supporting block 601 and the second supporting block 602; the third supporting block 606 is bolted to a side surface of the push plate 503 close to the supporting strip 501; a cylindrical cam 607 parallel to the first rotating shaft 604 is rotatably connected to the third supporting block 606 ; One end of the cylindrical cam 607 is coaxially fixed to the output end of a conventional second rotary cylinder 608 in the field; the second rotary cylinder 608 is bolted to a side surface of the push plate 503 close to the support strip 501; the other end surface of the cylindrical cam 607 is axially provided with an orientation groove 609; a conventional spline shaft 610 in the field is slidably inserted in the orientation groove 609; a rotating sleeve 611 is slidably sleeved on the spline shaft 610; the rotating sleeve 611 is rotatably connected to the first support block 601; the end of the spline shaft 610 away from the cylindrical cam 607 is coaxially welded with another clamping strip 603 A corresponding second rotating shaft 612; one end of the other clamping strip 603 is vertically bolted to the second rotating shaft 612; the end of the second rotating shaft 612 away from the spline shaft 610 is coaxially bolted to an annular guide rail 613; a slider 614 is slidably connected to the annular guide rail 613; a push-pull rod 615 parallel to the second rotating shaft 612 is bolted to the slider 614; the push-pull rod 615 is slidably inserted into the first support block 601; a guide column 616 is radially welded to the end of the push-pull rod 615 away from the slider 614; one end of the guide column 616 is slidably inserted into the working groove of the cylindrical cam 607.When in use, before the lead-acid battery is transported to the position corresponding to the push plate 503, the first rotating cylinder 605 drives a clamping strip 603 to rotate in the direction of the support plate 3 through the first rotating shaft 604, so that the clamping strip 603 is adjusted from a vertical state to a horizontal state. After the lead-acid battery is transported to the position corresponding to the push plate 503, one side of the lead-acid battery contacts the clamping strip 603, and then the second rotating cylinder 608 drives the cylindrical cam 607 to rotate, so that the cylindrical cam 607 is driven to rotate through the guide column 616, the push-pull rod 615, the slider 614, and the ring The spline guide rail 613 and the second rotating shaft 612 drive the spline shaft 610 to move axially on the directional groove 609 and the rotating sleeve 611, so that the other clamping strip 603 approaches the first clamping strip 603. At the same time, the cylindrical cam 607 drives the other clamping strip 603 to rotate toward the support plate 3 via the spline shaft 610 and the second rotating shaft 612, so that the other clamping strip 603 is adjusted from a vertical state to a horizontal state, so that the lead-acid battery is clamped between the two clamping strips 603, which can not only realize the positioning of the lead-acid battery, but also realize the pushing mechanism 5 to pull the lead-acid battery.

[0042] Among them Figure 6-8 As shown, the other ends of the two clamping strips 603 are bolted to conventional negative pressure seats 617 in the art; the opposite outer sides of the two negative pressure seats 617 are vertically connected to conventional air extraction joints 618 in the art; and the opposite inner sides of the two negative pressure seats 617 are evenly provided with a plurality of adsorption holes 619. When in use, when the lead-acid battery is clamped between the two clamping strips 603, the air extraction joint 618 performs air extraction on the negative pressure seat 617, causing the adsorption holes 619 to be in a negative pressure state, so that the adsorption holes 619 can absorb the lead-acid battery, thereby further improving the connection stability between the lead-acid battery and the pushing mechanism 5, and effectively ensuring the position adjustment efficiency of the lead-acid battery.

[0043] Embodiment three:

[0044] Based on Example 2, Fig.11 As shown, the lifting mechanism 7 includes a pair of pillars 701 connected to the upper surface of the workbench 1 by vertical bolts side by side; the two pillars 701 are respectively arranged on opposite sides of the support plate 3; the upper ends of the two pillars 701 are connected by a mounting strip 702; the upper surface of the mounting strip 702 is vertically bolted with a conventional second cylinder 703 in the art; the output end of the second cylinder 703 slides through the mounting strip 702 and is horizontally bolted with a lifting strip 704 parallel to the mounting strip 702. When in use, the lifting strip 704 is driven up and down by the second cylinder 703, so as to achieve contact or separation between the measuring probe 8 and the lead-acid battery.

[0045] Among them Figure 11-13As shown, the measuring probe 8 includes a pair of supporting columns 801 vertically connected to the lifting strip 704 side by side; the lower ends of the two supporting columns 801 are vertically sleeved with positioning cylinders 802, and the lower end of each positioning cylinder 802 is a trumpet-shaped structure, which can facilitate the lead-acid battery terminal to move into the positioning cylinder 802; the two positioning cylinders 802 are bolted with conventional power terminals 803 in the field; the two power terminals 803 are respectively connected to the measuring instrument body 2 through wires 804; the upper surface of the lifting strip 704 is provided with a pair of through grooves 705 side by side; the two supporting columns 80 1 are respectively loosely fitted in the two through grooves 705; the upper ends of the two bearing columns 801 are threadedly fitted with the limiting sleeves 805, and the two bearing columns 801 are fixedly sleeved with retaining rings 806; the limiting sleeves 805 and the retaining rings 806 are respectively arranged on the upper and lower sides of the lifting strip 704; the lower surfaces of the two retaining rings 806 are vertically connected with tensioning springs 807; the two tensioning springs 807 are respectively sleeved on the outer circumferences of the two bearing columns 801; the lower ends of the two tensioning springs 807 are respectively fixed on the upper ends of the two positioning cylinders 802; the two positioning cylinders 802 are respectively slidably fitted with the two bearing columns 801. When in use, the relative distance between the two power terminals 803 is adjusted by moving the supporting column 801 in the through groove 705, and the supporting column 801 is locked on the lifting strip 704 by using the limiting sleeve 805 and the retaining ring 806, which effectively ensures the stability of the power terminals 803. The positioning cylinder 802 is designed to slide with the supporting column 801, and the positioning cylinder 802 is connected to the retaining ring 806 by a tensioning spring 807, which can not only avoid hard contact between the power terminals 803 and the lead-acid battery terminals, but also ensure the contact stability between the power terminals 803 and the lead-acid battery terminals.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method, comprising a workbench (1) and a measuring instrument body (2) placed on the upper surface of the workbench (1); characterized in that: A support plate (3) is horizontally fixed on the upper surface of the workbench (1); conveying mechanisms (4) are horizontally connected to opposite sides of the support plate (3); a pushing mechanism (5) for pushing the storage battery on the conveying mechanism (4) onto the support plate (3) is horizontally mounted on the two conveying mechanisms (4); a clamping mechanism (6) for clamping the storage battery is mounted on the two pushing mechanisms (5); a lifting mechanism (7) is vertically mounted between the two clamping mechanisms (6); a measuring probe (8) connected to the measuring instrument body (2) is vertically mounted on the lifting mechanism (7).

2. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 1, characterized in that: The conveying mechanism (4) comprises a pair of beams (401) fixed horizontally side by side on the upper surface of the workbench (1); a feeding notch (402) is provided on the upper edge of a beam (401) close to the support plate (3); the upper surface of the feeding notch (402) is flush with the upper surface of the support plate (3); a pair of rollers (403) are rotatably connected side by side between the two beams (401); the output shaft of one roller (403) is coaxially fixed to the output shaft of a servo motor (404); the servo motor (404) is fixed on a beam (401); and the two rollers (403) are connected by a conveyor belt (405).

3. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 2, characterized in that: The pushing mechanism (5) comprises a supporting strip (501) vertically fixed on another crossbeam (401); a first cylinder (502) is horizontally fixed to the upper end of the supporting strip (501); an output shaft of the first cylinder (502) slides through the supporting strip (501) and is vertically fixed with a pushing plate (503).

4. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 3, characterized in that: The clamping mechanism (6) comprises a first support block (601) and a second support block (602) respectively fixed on opposite sides of a push plate (503), and the first support block (601) is arranged on one side of the push plate (503) close to the input end of the conveying mechanism (4); the first support block (601) and the second support block (602) are both arranged between the support strip (501) and the push plate (503); the first support block (601) and the second support block (602) are both connected to the opposite outer sides thereof with clamping strips (603) perpendicular to the crossbeam (401).

5. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 4, characterized in that: A first rotating shaft (604) parallel to the crossbeam (401) is fixed to one end of the clamping strip (603); the first rotating shaft (604) is rotatably connected to the second supporting block (602); one end of the first rotating shaft (604) is coaxially fixed to the output end of a first rotating cylinder (605); the first rotating cylinder (605) is fixed to a side surface of the pushing plate (503) close to the supporting strip (501).

6. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 5, characterized in that: A third support block (606) is arranged between the first support block (601) and the second support block (602); the third support block (606) is fixed on a side surface of the push plate (503) close to the support strip (501); a cylindrical cam (607) parallel to the first rotating shaft (604) is rotatably connected to the third support block (606); one end of the cylindrical cam (607) is coaxially fixed to the output end of a second rotating cylinder (608); the second rotating cylinder (608) is fixed on a side surface of the push plate (503) close to the support strip (501); an axial orientation groove (609) is provided on the other end surface of the cylindrical cam (607); a spline shaft (610) is slidably inserted in the directional groove (609); a rotating sleeve (611) is slidably sleeved on the spline shaft (610); the rotating sleeve (611) is rotatably connected to On the first support block (601); a second rotating shaft (612) corresponding to another clamping strip (603) is coaxially fixed at one end of the spline shaft (610) away from the cylindrical cam (607); one end of the other clamping strip (603) is vertically fixed on the second rotating shaft (612); an annular guide rail (613) is coaxially fixed at one end of the second rotating shaft (612) away from the spline shaft (610); a slider (614) is slidably connected to the annular guide rail (613); a push-pull rod (615) parallel to the second rotating shaft (612) is fixed on the slider (614); the push-pull rod (615) is slidably inserted on the first support block (601); a guide column (616) is radially fixed at one end of the push-pull rod (615) away from the slider (614); one end of the guide column (616) is slidably inserted into the working groove of the cylindrical cam (607).

7. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 6, characterized in that: A negative pressure seat (617) is fixed to the other end of the two clamping strips (603); the relative outer side surfaces of the two negative pressure seats (617) are vertically connected to a suction joint (618); and the relative inner side surfaces of the two negative pressure seats (617) are evenly distributed with a plurality of adsorption holes (619).

8. A measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 6 or 7, characterized in that: The lifting mechanism (7) comprises a pair of pillars (701) vertically fixed side by side on the upper surface of the workbench (1); the two pillars (701) are respectively arranged on opposite sides of the support plate (3); the upper ends of the two pillars (701) are connected by a mounting strip (702); a second cylinder (703) is vertically fixed on the upper surface of the mounting strip (702); the output end of the second cylinder (703) slides through the mounting strip (702) and is horizontally fixed with a lifting strip (704) parallel to the mounting strip (702).

9. A measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 8, characterized in that: The measuring probe (8) comprises a pair of supporting columns (801) vertically connected side by side to the lifting strip (704); the lower ends of the two supporting columns (801) are vertically sleeved with positioning tubes (802); the two positioning tubes (802) are fixed with power terminals (803); the two power terminals (803) are respectively connected to the measuring instrument body (2) through wires (804).

10. The measuring device for calculating the internal resistance of a lead-acid battery using an alternating current method according to claim 9, characterized in that: A pair of through grooves (705) are arranged side by side on the upper surface of the lifting strip (704); the two supporting columns (801) are respectively loosely fitted in the two through grooves (705); the upper ends of the two supporting columns (801) are threadedly fitted with a limiting sleeve (805), and the two supporting columns (801) are fixedly sleeved with a retaining ring (806); the limiting sleeve (805) and the retaining ring (806) are respectively arranged on the upper and lower sides of the lifting strip (704); the lower surfaces of the two retaining rings (806) are vertically connected with a tensioning spring (807); the two tensioning springs (807) are respectively sleeved on the outer periphery of the two supporting columns (801); the lower ends of the two tensioning springs (807) are respectively fixed on the upper ends of the two positioning cylinders (802); the two positioning cylinders (802) are respectively slidably fitted with the two supporting columns (801).

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