Lithium battery discharge detection equipment with screening function

Abstract

The invention relates to the technical field of electrical variable measurement, and discloses a lithium battery discharge detection device with a screening function, which comprises a workbench, the outer wall of the workbench is fixedly connected with a support frame, the inner wall of the support frame is slidably connected with a support plate I, and the inner wall of the support frame is fixedly connected with an air cylinder. The output end of the air cylinder is fixedly connected with the bottom of the first supporting plate, the supporting mechanism is arranged in the first supporting plate and comprises a first adjusting rod and a detection assembly, and the detection assembly is arranged at the bottom of the first supporting plate. The lithium battery discharge electrode is separated from the detection element through the detection assembly before being clamped by the detection equipment, so that the damage to the battery discharge electrode and the detection element caused by ignition at the battery joint due to direct connection with the lithium battery discharge electrode is avoided, and the detection equipment can safely and stably carry out discharge detection on the lithium battery; and functions of the lithium batteries are detected and screened.

Description

Technical Field

[0001] The invention relates to the technical field of electrical variable measurement, in particular to a lithium battery discharge detection device with a screening function. Background Art

[0002] With the widespread application of lithium batteries in many fields, their performance and quality have attracted much attention. In order to accurately control the quality of lithium batteries and meet the market demand for high-performance lithium batteries, a lithium battery discharge detection device with screening function has come into being. This equipment is designed to use professional discharge detection methods to perform detailed inspection and screening of lithium batteries, thereby helping lithium battery production and related links to better screen out products that meet the corresponding standards, and ensure that lithium batteries can function stably and efficiently in subsequent use.

[0003] The patent application with application number 202210012309.7 discloses a battery charging and discharging test box that can effectively recycle residual products, which includes a battery tester. A plurality of battery boxes for connecting a plurality of batteries in series are arranged on the front platform of the battery tester, and a plurality of charging and discharging components for recovering the battery power are installed at one end of each battery box facing the battery tester. A plurality of battery cavities are provided at equal intervals at one end of the battery box and extend through the other end along the length direction of its end face. The charging and discharging components include a pair of positive plates and a pair of negative plates. A battery screening component is arranged on one side of the battery tester.

[0004] However, when lithium battery discharge equipment is performing discharge detection, it is impossible to determine the battery usage status, and key information such as the remaining power inside and the degree of plate aging cannot be effectively obtained, resulting in different battery discharge efficiencies. Instantaneous current and high temperature can easily cause sparks, causing damage to the battery and detection equipment. The scrapped batteries screened out after the battery discharge test will cause the battery voltage to rise rapidly due to polarization, which will pose a danger to subsequent processes. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery discharge detection device with a screening function to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a lithium battery discharge detection device with screening function, comprising a workbench, the outer wall of the workbench is fixedly connected to a support frame, the inner wall of the support frame is slidably connected to a support plate 1, the inner wall of the support frame is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to the bottom of the support plate 1, and further comprising: A support mechanism, wherein the support mechanism is arranged inside a support plate 1, the support mechanism comprises an adjustment rod 1, the outer wall of the adjustment rod 1 is slidably connected to the inner wall of the support plate 1, the bottom of the adjustment rod 1 is fixedly connected to a positioning plate, the outer wall of the adjustment rod 1 is provided with a sliding groove 2, the surface of the positioning plate is provided with a limiting groove 2, a positioning mechanism is arranged inside the limiting groove 2, and the support mechanism also comprises a detection block, the top of the detection block is fixedly connected to the bottom of the support plate 1; A detection component, wherein the detection component is arranged at the bottom of a support plate, and the detection component includes a support block 1, the top of the support block 1 is fixedly connected to the bottom of the support plate 1, the bottom of the support block 1 is fixedly connected to an adjustment rod 2, the bottom of the support block 1 is fixedly connected to a spring 1, the other end of the spring 1 is fixedly connected to the surface of the positioning plate, the bottom of the support block 1 is fixedly connected to a support block 2 through a connecting rib, the inner wall of the support block 2 is slidably connected to a connecting rod, and the end of the connecting rod away from the support block 2 is fixedly connected to the positioning block 1, and the detection block is used to discharge the battery and detect the battery discharge.

[0007] According to the above technical solution, a sliding groove 1 is provided on the outer wall of the positioning plate, a limiting groove 1 is provided on the surface of the positioning plate, a hinge block is fixedly connected to the groove wall of the limiting groove 1, an elastic plate is hinged to the inner wall of the hinge block through a rotating shaft, a sliding sleeve is slidably connected to the outer wall of the connecting rod, a support plate 2 is fixedly connected to the outer wall of the sliding sleeve, an end of the support plate 2 away from the sliding sleeve is fixedly connected to the bottom of the detection block, the support plate 2 is used to support the detection wire, and the sliding sleeve is used to conduct electricity through the connecting rod and adapt to the displacement generated by the connecting rod.

[0008] According to the above technical scheme, the positioning mechanism includes an adjusting sleeve, the outer wall of the adjusting sleeve is slidably connected to the wall of the second limiting groove, the outer wall of the adjusting sleeve is fixedly connected to the limiting block, the inner wall of the limiting block is hinged to the outer wall of the elastic plate through a rotating shaft, the inner wall of the adjusting sleeve is fixedly connected with a guide block, the inner wall of the adjusting sleeve is slidably connected with a sliding rod, the outer wall of the sliding rod is provided with a guide groove 1, the bottom of the sliding rod is fixedly connected with a positioning block 3, the outer wall of the sliding rod is fixedly connected with an isolation sleeve, the top of the sliding rod is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with a positioning block 2, the top of the positioning block 2 is provided with a guide groove 2, the outer wall of the sliding rod is provided with an adjustment component, and the positioning block 3 is used to connect the discharge electrode of the lithium battery.

[0009] According to the above technical solution, the adjustment component includes a limit plate 1, the inner wall of the limit plate 1 is fixedly connected to the outer wall of the sliding rod, the outer wall of the limit plate 1 is provided with a sliding groove 3, the groove wall of the sliding groove 3 is slidably connected with a clamp, the outer wall of the clamp is hinged to the limit plate 2 through a rotating shaft, the top of the limit plate 2 is fixedly connected to the bottom of the limit block, the top of the limit plate 1 is fixedly connected with a spring 3, the other end of the spring 3 is fixedly connected to the bottom of the adjustment sleeve, and the clamp is used to clamp the discharge electrode of the lithium battery.

[0010] According to the above technical solution, there are two groups of connecting rods, and the two groups of connecting rods are symmetrically arranged on both sides of the support block 2 with the center line of the support block 2 as the symmetry axis. The outer walls of the two groups of connecting rods are fixedly connected to the two ends of the spring 2, the outer wall of the support block 1 is slidably connected to the groove wall of the sliding groove 2, the outer wall of the adjusting rod 2 is slidably connected to the inner wall of the positioning plate, and the adjusting rod 2 is used to limit the positioning plate.

[0011] According to the above technical solution, the outer wall of the elastic plate is slidably connected to the wall of the sliding groove 1, the sliding groove 1 penetrates the outer wall of the positioning plate and is connected to the limiting groove 1 and the limiting groove 2, and the elastic plate is used to reset the adjustment sleeve.

[0012] According to the above technical scheme, there are two groups of positioning mechanisms, and the two groups of positioning mechanisms are symmetrically arranged in the second limiting groove with the center line of the positioning plate as the symmetry axis. There are two groups of limiting blocks, and the two groups of limiting blocks are symmetrically arranged on both sides of the outer wall of the adjustment sleeve with the center line of the adjustment sleeve as the symmetry axis. The outer wall of the limiting block is slidably connected to the groove wall of the first limiting groove, and the outer wall of the guide block is slidably connected to the groove wall of the first guide groove. The second positioning block is plugged into the outer wall of the first positioning block through the second guide groove, and the second guide groove is used to guide the first positioning block.

[0013] According to the above technical solution, there are two groups of limit plates 2 and clamps, and the two groups of limit plates 2 and clamps are symmetrically arranged at the bottom of the two groups of limit blocks with the center line of limit plate 1 as the symmetry axis. The limit plate 2 is used to support the clamps.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The lithium battery discharge detection device with screening function uses the detection component to separate the detection device from the detection element before clamping the lithium battery discharge electrode, so as to avoid direct connection with the lithium battery discharge electrode, which may cause sparks at the battery connection and cause damage to the battery discharge electrode and the detection element, so that the detection device can safely and smoothly perform discharge detection on the lithium battery and detect and screen the lithium battery function.

[0015] 2. The lithium battery discharge detection device with screening function is connected to the lithium battery discharge electrode through a positioning mechanism, and is fully fitted with the lithium battery discharge electrode through self-positioning adjustment, ensuring that the lithium battery can discharge safely and preventing sparks when connected to the lithium battery discharge electrode, which may cause damage to the lithium battery. At the same time, it is connected to the detection component to detect the lithium battery to prevent sparks at the connection from causing damage to the detection element.

[0016] 3. The lithium battery discharge detection equipment with screening function limits the positioning mechanism through the support mechanism and supports the positioning mechanism, so that the stability of the connection is guaranteed after the positioning mechanism is connected to the lithium battery discharge electrode, so that the lithium battery can be discharged smoothly, and the detection and recording are carried out through the detection equipment, and the battery is screened according to its functionality.

[0017] 4. The lithium battery discharge detection equipment with screening function clamps the discharge electrode of the lithium battery by adjusting the components. During the clamping process, the position of the discharge electrode of the lithium battery is adjusted to drive the positioning mechanism to adjust the position, so that the positioning mechanism increases the contact area with the discharge electrode of the lithium battery, reduces the heat caused by the connection resistance, and prevents sparks when connected to the discharge electrode of the lithium battery, causing damage to the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the support mechanism of the present invention; Figure 3 A cross-sectional view of the support mechanism of the present invention Figure 1 ; Figure 4 A cross-sectional view of the support mechanism of the present invention Figure 2 ; Figure 5 is a cross-sectional view of the detection assembly of the present invention; Figure 6 is a cross-sectional view of the positioning mechanism of the present invention; Figure 7 It is a structural schematic diagram of the adjustment assembly of the present invention and a cross-sectional view of the positioning mechanism; Figure 8 It is a schematic diagram of the structure of the adjustment component of the present invention.

[0019] In the figure: 1, workbench; 101, support frame; 102, support plate 1; 103, cylinder; 2, support mechanism; 201, adjustment rod 1; 202, positioning plate; 203, sliding groove 1; 204, limit groove 1; 205, limit groove 2; 206, detection block; 207, sliding groove 2; 208, hinge block; 209, elastic plate; 3, detection assembly; 301, support block 1; 302, adjustment rod 2; 303, spring 1; 304, support block 2; 305, connecting rod; 306 , spring two; 307, positioning block one; 308, sliding sleeve; 309, support plate two; 4, positioning mechanism; 401, adjustment sleeve; 402, limit block; 403, guide block; 404, sliding rod; 405, guide groove one; 406, connecting plate; 407, positioning block two; 408, guide groove two; 409, positioning block three; 410, isolation sleeve; 5, adjustment assembly; 501, limit plate one; 502, limit plate two; 503, clamping claw; 504, spring three; 505, sliding groove three. DETAILED DESCRIPTION

[0020] 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.

[0021] For example, see Figure 1-Figure 5 The present invention provides a technical solution: a lithium battery discharge detection device with a screening function, comprising a workbench 1, a support frame 101 is fixedly connected to the outer wall of the workbench 1, a support plate 102 is slidably connected to the inner wall of the support frame 101, a cylinder 103 is fixedly connected to the inner wall of the support frame 101, and the output end of the cylinder 103 is fixedly connected to the bottom of the support plate 102, and also includes: Support mechanism 2, support mechanism 2 is arranged inside support plate 102, support mechanism 2 includes adjustment rod 1 201, the outer wall of adjustment rod 201 is slidably connected with the inner wall of support plate 102, the bottom of adjustment rod 201 is fixedly connected with positioning plate 202, the outer wall of adjustment rod 201 is provided with sliding groove 207, the surface of positioning plate 202 is provided with limiting groove 205, the limiting groove 205 is provided with positioning mechanism 4, support mechanism 2 also includes detection block 206, the top of detection block 206 is fixedly connected with the bottom of support plate 102; Detection component 3, detection component 3 is arranged at the bottom of support plate 102, detection component 3 includes support block 1 301, the top of support block 1 301 is fixedly connected to the bottom of support plate 102, the bottom of support block 1 301 is fixedly connected to adjustment rod 2 302, the bottom of support block 1 301 is fixedly connected to spring 1 303, the other end of spring 1 303 is fixedly connected to the surface of positioning plate 202, the bottom of support block 1 301 is fixedly connected to support block 2 304 through connecting ribs, and the inner wall of support block 2 304 is slidably connected to connecting rod 3 05, the end of the connecting rod 305 away from the supporting block 2 304 is fixedly connected with a positioning block 1 307, and the detection block 206 is used to discharge the battery and detect the battery discharge. When the lithium battery discharge detection device with screening function is put into use, the lithium battery is placed on the surface of the workbench 1, and the cylinder 103 is started to drive the supporting plate 1 102 to slide downward on the inner wall of the supporting frame 101, driving the supporting mechanism 2 to descend, and the positioning plate 202 drives the positioning mechanism 4 to descend and connect with the lithium battery discharge electrode, and then slides in the limiting groove 205 for adjustment. The positioning mechanism 4 is adjusted so that it is completely in contact with the discharge electrode of the lithium battery. After the positioning mechanism 4 is connected to the lithium battery, the support plate 102 continues to descend, and the positioning plate 202 supports the adjusting rod 201, so that the adjusting rod 201 slides on the inner wall of the support plate 102, so that the support block 301 compresses the spring 303 and slides on the groove wall of the sliding groove 207, so that the positioning block 307 is inserted into the positioning mechanism 4, and the positioning block 307 is positioned by the positioning mechanism 4, so that the positioning block 307 drives the connecting rod 305 to compress the connecting rod 305. After the second compression spring 306 slides on the inner wall of the second support block 304 and the sliding sleeve 308, a passage is formed inside the detection block 206 through the connecting rod 305, the sliding sleeve 308 and the second support plate 309 after the positioning block 1 307 is plugged in, and the lithium battery is discharged through the detection block 206, and the battery is screened according to the discharge function of the lithium battery. After the discharge of the lithium battery with unqualified discharge function is completed, the staff will short-circuit the two discharge electrodes of the lithium battery to prevent the voltage of the battery from rising after discharge, which may cause danger in the scrapping process; The outer wall of the positioning plate 202 is provided with a sliding groove 203, and the surface of the positioning plate 202 is provided with a limiting groove 204. The groove wall of the limiting groove 204 is fixedly connected with a hinge block 208. The inner wall of the hinge block 208 is hinged with an elastic plate 209 through a rotating shaft. The outer wall of the connecting rod 305 is slidably connected with a sliding sleeve 308. The outer wall of the sliding sleeve 308 is fixedly connected with a supporting plate 209. The end of the supporting plate 209 away from the sliding sleeve 308 is fixedly connected to the bottom of the detection block 206. The supporting plate 209 is used to support the detection wire. The sliding sleeve 308 is used to conduct electricity through the connecting rod 305 and adapt to the displacement generated by the connecting rod 305. When the positioning mechanism 4 is connected to the discharge electrode of the lithium battery, the positioning mechanism 4 adjusts itself by positioning the lithium battery. During the adjustment of mechanism 4, positioning mechanism 4 compresses elastic plate 209 to slide in the wall of sliding groove 1 203, supports positioning mechanism 4, prevents positioning mechanism 4 from being offset during the detection process and causing resistance change after being connected to the lithium battery. During the insertion of positioning block 1 307 into positioning mechanism 4, positioning block 1 307 is positioned by positioning mechanism 4, so that positioning block 1 307 drives connecting rod 305 to compress spring 2 306 to slide on the inner wall of supporting block 2 304 and sliding sleeve 308. After the positioning block 1 307 is connected, a passage is formed inside the detection block 206 through connecting rod 305, sliding sleeve 308 and supporting plate 2 309, and the lithium battery is discharged through the detection block 206, and the battery is screened according to the discharge function of the lithium battery; There are two groups of connecting rods 305, and the two groups of connecting rods 305 are symmetrically arranged on both sides of the supporting block 2 304 with the center line of the supporting block 2 304 as the symmetry axis. The outer walls of the two groups of connecting rods 305 are fixedly connected to the two ends of the spring 2 306, the outer wall of the supporting block 1 301 is slidably connected to the groove wall of the sliding groove 207, the outer wall of the adjusting rod 2 302 is slidably connected to the inner wall of the positioning plate 202, and the adjusting rod 2 302 is used to limit the positioning plate 202. After the positioning mechanism 4 is connected to the lithium battery electrode, the supporting plate 1 102 continues to descend, and the adjusting rod The outer wall of the first 201 slides on the inner wall of the support plate 102, and the support plate 102 drives the support block 1 301 to descend. The support block 1 301 compresses the spring 1 303 to slide inside the sliding groove 207, and drives the adjustment rod 2 302 to slide on the inner wall of the positioning plate 202. After the positioning block 1 307 is plugged in, a passage is formed inside the detection block 206 through the connecting rod 305, the sliding sleeve 308 and the support plate 2 309, and the lithium battery is discharged through the detection block 206, and the battery is screened according to the discharge function of the lithium battery; The outer wall of the elastic plate 209 is slidably connected to the wall of the sliding groove 1 203. The sliding groove 1 203 penetrates the outer wall of the positioning plate 202 and is connected to the limit groove 1 204 and the limit groove 205. The elastic plate 209 is used to reset the adjustment sleeve 401. During the adjustment of the positioning mechanism 4, the positioning mechanism 4 compresses the elastic plate 209 to slide in the wall of the sliding groove 1 203 to support the positioning mechanism 4, so as to prevent the positioning mechanism 4 from being offset during the detection process after being connected to the lithium battery, resulting in a change in resistance.

[0022] Example 2, based on Example 1, please refer to Figure 6 The present invention provides a technical solution: the positioning mechanism 4 includes an adjustment sleeve 401, the outer wall of the adjustment sleeve 401 is slidably connected to the wall of the second limiting groove 205, the outer wall of the adjustment sleeve 401 is fixedly connected to the limiting block 402, the inner wall of the limiting block 402 is hinged to the outer wall of the elastic plate 209 through a rotating shaft, the inner wall of the adjustment sleeve 401 is fixedly connected to a guide block 403, the inner wall of the adjustment sleeve 401 is slidably connected to a sliding rod 404, the outer wall of the sliding rod 404 is provided with a guide groove 1 405, the bottom of the sliding rod 404 is fixedly connected to a positioning block 3 409, and the outer wall of the sliding rod 404 is fixedly connected to an isolation sleeve 41 0, the top of the sliding rod 404 is fixedly connected with a connecting plate 406, the top of the connecting plate 406 is fixedly connected with a positioning block 407, the top of the positioning block 407 is provided with a guide groove 408, the outer wall of the sliding rod 404 is provided with an adjustment component 5, the positioning block 409 is used to connect the discharge electrode of the lithium battery, and the positioning plate 202 drives the positioning mechanism 4 to move downward to connect with the discharge electrode of the lithium battery. When the outer wall of the positioning block 407 contacts the discharge electrode of the lithium battery, the sliding rod 404 is driven to slide on the inner wall of the adjustment sleeve 401, and the guide block 403 slides on the inner wall of the guide groove 405, preventing The anti-sliding rod 404 rotates, and after the positioning block 407 contacts the discharge electrode of the lithium battery, the inner wall of the isolation sleeve 410 contacts the discharge electrode and is sleeved on the outer wall of the discharge electrode of the lithium battery, and the adjustment sleeve 401 is driven to slide on the inner wall of the second limiting groove 205 through the sliding rod 404. During the adjustment process of the adjustment sleeve 401, the limiting block 402 is driven to compress the elastic plate 209 to slide inside the limiting groove 1 204 to support the adjustment sleeve 401. At the same time, after the outer wall of the positioning block 407 contacts the discharge electrode of the lithium battery, the sliding rod 404 drives the adjustment component 5 to squeeze the isolation sleeve 410 to press the discharge electrode of the lithium battery. Clamping is performed to prevent the positioning block 2 407 from shifting during the discharge process of the lithium battery, causing the resistance to change. After the positioning block 2 407 is connected to the discharge electrode of the lithium battery, the support plate 102 slides downward on the outer wall of the adjustment rod 1 201, driving the support block 1 301 to compress the spring 1 303 downward, and the positioning block 1 307 is plugged into the guide groove 2 408 opened at the top of the positioning block 3 409. When the positioning block 1 307 is plugged into the bottom of the guide groove 2 408, a passage is formed with the lithium battery, and the lithium battery is discharged through the detection block 206, and a discharge detection is performed to screen the discharge function of the lithium battery; There are two groups of positioning mechanisms 4, and the two groups of positioning mechanisms 4 are symmetrically arranged in the limiting groove 205 with the center line of the positioning plate 202 as the symmetry axis. There are two groups of limiting blocks 402, and the two groups of limiting blocks 402 are symmetrically arranged on both sides of the outer wall of the adjustment sleeve 401 with the center line of the adjustment sleeve 401 as the symmetry axis. The outer wall of the limiting block 402 is slidably connected with the groove wall of the limiting groove 204, the outer wall of the guide block 403 is slidably connected with the groove wall of the guide groove 405, the positioning block 407 is plugged with the outer wall of the positioning block 307 through the guide groove 408, and the guide groove 409 is connected with the outer wall of the positioning block 308. 08 is used to guide the positioning block 1 307. After the positioning block 2 407 is connected to the discharge electrode of the lithium battery, the support plate 102 slides downward on the outer wall of the adjustment rod 1 201, driving the support block 301 to compress the spring 1 303 and the positioning block 1 307 is plugged into the guide groove 2 408 opened at the top of the positioning block 3 409. When the positioning block 1 307 is plugged into the bottom of the guide groove 2 408, a passage is formed with the lithium battery. The lithium battery is discharged through the detection block 206, and a discharge detection is performed to screen the discharge function of the lithium battery.

[0023] Example 3, based on Example 1 and Example 2, please refer to Figure 7-Figure 8 The present invention provides a technical solution: the adjustment component 5 includes a limit plate 501, the inner wall of the limit plate 501 is fixedly connected to the outer wall of the sliding rod 404, the outer wall of the limit plate 501 is provided with a sliding groove 505, the groove wall of the sliding groove 505 is slidably connected with a clamping claw 503, the outer wall of the clamping claw 503 is connected to the limit plate 2 502 through a rotating shaft hinge, the top of the limit plate 2 502 is fixedly connected to the bottom of the limit block 402, the top of the limit plate 501 is fixedly connected with a spring 3 504, the other end of the spring 3 504 is fixedly connected to the bottom of the adjustment sleeve 401, the clamping claw 503 is used to clamp the discharge electrode of the lithium battery, positioning After the outer wall of block 2 407 contacts the discharge electrode of the lithium battery, it drives the sliding rod 404 to slide upward on the inner wall of the adjustment sleeve 401, and the sliding rod 404 drives the limiting plate 1 501 to compress the spring 3 504 to slide upward, and the limiting plate 1 501 drives the clamping claw 503 to slide on the inner wall of the sliding groove 3 505, so that the clamping claw 503 swings toward the isolation sleeve 410, and the clamping claw 503 is supported by the limiting plate 2 502, so that the clamping claw 503 squeezes the isolation sleeve 410 to clamp the discharge electrode of the lithium battery, so as to prevent the lithium battery from being offset during the discharge detection process of the positioning block 2 407, resulting in an increase in resistance and affecting the detection result; There are two groups of limit plates 502 and clamps 503. The two groups of limit plates 502 and clamps 503 are symmetrically arranged at the bottom of the two groups of limit blocks 402 with the center line of the limit plate 1 501 as the symmetry axis. The limit plate 502 is used to support the clamps 503. The two groups of clamps 503 support the clamps 503 through the limit plate 502, so that the clamps 503 squeeze the isolation sleeve 410 to clamp the discharge electrode of the lithium battery, thereby preventing the positioning block 407 from being offset during the discharge detection process of the lithium battery, resulting in an increase in resistance and affecting the detection result.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery discharge detection device with a screening function, comprising a workbench (1), the outer wall of the workbench (1) is fixedly connected to a support frame (101), the inner wall of the support frame (101) is slidably connected to a support plate 1 (102), the inner wall of the support frame (101) is fixedly connected to a cylinder (103), the output end of the cylinder (103) is fixedly connected to the bottom of the support plate 1 (102), characterized in that: Also includes: A support mechanism (2), the support mechanism (2) being arranged inside a support plate (102), the support mechanism (2) comprising an adjustment rod (201), the outer wall of the adjustment rod (201) being slidably connected to the inner wall of the support plate (102), the bottom of the adjustment rod (201) being fixedly connected to a positioning plate (202), the outer wall of the adjustment rod (201) being provided with a sliding groove (207), the surface of the positioning plate (202) being provided with a limiting groove (205), the limiting groove (205) being provided with a positioning mechanism (4) inside, the support mechanism (2) further comprising a detection block (206), the top of the detection block (206) being fixedly connected to the bottom of the support plate (102); A detection assembly (3), the detection assembly (3) being arranged at the bottom of a support plate 1 (102), the detection assembly (3) comprising a support block 1 (301), the top of the support block 1 (301) being fixedly connected to the bottom of the support plate 1 (102), the bottom of the support block 1 (301) being fixedly connected to an adjustment rod 2 (302), the bottom of the support block 1 (301) being fixedly connected to a spring 1 (303), the other end of the spring 1 (303) being fixedly connected to the surface of a positioning plate (202), the bottom of the support block 1 (301) being fixedly connected to a support block 2 (304) via a connecting rib, the inner wall of the support block 2 (304) being slidably connected to a connecting rod (305), the end of the connecting rod (305) away from the support block 2 (304) being fixedly connected to a positioning block 1 (307), the detection block (206) being used for discharging a battery and detecting the battery discharge.

2. The lithium battery discharge detection device with screening function according to claim 1, characterized in that: The outer wall of the positioning plate (202) is provided with a sliding groove (203), the surface of the positioning plate (202) is provided with a limiting groove (204), the groove wall of the limiting groove (204) is fixedly connected to a hinge block (208), the inner wall of the hinge block (208) is connected to an elastic plate (209) via a rotating shaft hinge, the outer wall of the connecting rod (305) is slidably connected to a sliding sleeve (308), the outer wall of the sliding sleeve (308) is fixedly connected to a supporting plate (309), the end of the supporting plate (309) away from the sliding sleeve (308) is fixedly connected to the bottom of the detection block (206), the supporting plate (309) is used to support the detection wire, and the sliding sleeve (308) is used to conduct electricity through the connecting rod (305) and adapt to the displacement generated by the connecting rod (305).

3. The lithium battery discharge detection device with screening function according to claim 1, characterized in that: The positioning mechanism (4) comprises an adjustment sleeve (401), the outer wall of the adjustment sleeve (401) being slidably connected to the wall of the second limiting groove (205), the outer wall of the adjustment sleeve (401) being fixedly connected to the limiting block (402), the inner wall of the limiting block (402) being hingedly connected to the outer wall of the elastic plate (209) via a rotating shaft, the inner wall of the adjustment sleeve (401) being fixedly connected to a guide block (403), the inner wall of the adjustment sleeve (401) being slidably connected to a sliding rod (404), and the outer wall of the sliding rod (404) being provided with a guide groove (403). 05), the bottom of the sliding rod (404) is fixedly connected to a positioning block three (409), the outer wall of the sliding rod (404) is fixedly connected to an isolation sleeve (410), the top of the sliding rod (404) is fixedly connected to a connecting plate (406), the top of the connecting plate (406) is fixedly connected to a positioning block two (407), the top of the positioning block two (407) is provided with a guide groove two (408), the outer wall of the sliding rod (404) is provided with an adjustment component (5), and the positioning block three (409) is used to connect the discharge electrode of the lithium battery.

4. The lithium battery discharge detection device with screening function according to claim 3, characterized in that: The adjustment component (5) comprises a limit plate 1 (501), the inner wall of the limit plate 1 (501) is fixedly connected to the outer wall of the sliding rod (404), the outer wall of the limit plate 1 (501) is provided with a sliding groove 3 (505), the groove wall of the sliding groove 3 (505) is slidably connected with a clamping claw (503), the outer wall of the clamping claw (503) is hingedly connected to the limit plate 2 (502) via a rotating shaft, the top of the limit plate 2 (502) is fixedly connected to the bottom of the limit block (402), the top of the limit plate 1 (501) is fixedly connected with a spring 3 (504), the other end of the spring 3 (504) is fixedly connected to the bottom of the adjustment sleeve (401), and the clamping claw (503) is used to clamp the discharge electrode of the lithium battery.

5. The lithium battery discharge detection device with screening function according to claim 1, characterized in that: The number of the connecting rods (305) is two groups. The two groups of connecting rods (305) are symmetrically arranged on both sides of the support block 2 (304) with the center line of the support block 2 (304) as the symmetry axis. The outer walls of the two groups of connecting rods (305) are fixedly connected to the two ends of the spring 2 (306). The outer wall of the support block 1 (301) is slidably connected to the groove wall of the sliding groove 2 (207). The outer wall of the adjustment rod 2 (302) is slidably connected to the inner wall of the positioning plate (202). The adjustment rod 2 (302) is used to limit the positioning plate (202).

6. The lithium battery discharge detection device with screening function according to claim 2, characterized in that: The outer wall of the elastic plate (209) is slidably connected to the wall of the sliding groove 1 (203); the sliding groove 1 (203) penetrates the outer wall of the positioning plate (202) and is connected to the limiting groove 1 (204) and the limiting groove 2 (205); the elastic plate (209) is used to reset the adjustment sleeve (401).

7. The lithium battery discharge detection device with screening function according to claim 3, characterized in that: The number of the positioning mechanisms (4) is two groups, and the two groups of the positioning mechanisms (4) are symmetrically arranged in the second limiting groove (205) with the center line of the positioning plate (202) as the symmetry axis. The number of the limiting blocks (402) is two groups, and the two groups of the limiting blocks (402) are symmetrically arranged on both sides of the outer wall of the adjustment sleeve (401) with the center line of the adjustment sleeve (401) as the symmetry axis. The outer wall of the limiting block (402) is slidably connected to the groove wall of the first limiting groove (204), and the outer wall of the guide block (403) is slidably connected to the groove wall of the first guide groove (405). The second positioning block (407) is plugged into the outer wall of the first positioning block (307) through the second guide groove (408), and the second guide groove (408) is used to guide the first positioning block (307).

8. The lithium battery discharge detection device with screening function according to claim 4, characterized in that: The number of the second limiting plate (502) and the clamping claw (503) is two sets, and the two sets of the second limiting plate (502) and the clamping claw (503) are symmetrically arranged at the bottom of the two sets of limiting blocks (402) with the center line of the first limiting plate (501) as the symmetry axis, and the second limiting plate (502) is used to support the clamping claw (503).

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