CN113391227B - High-precision tester and testing method for internal resistance of storage battery - Google Patents
High-precision tester and testing method for internal resistance of storage battery Download PDFInfo
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- CN113391227B CN113391227B CN202110649136.5A CN202110649136A CN113391227B CN 113391227 B CN113391227 B CN 113391227B CN 202110649136 A CN202110649136 A CN 202110649136A CN 113391227 B CN113391227 B CN 113391227B
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- internal resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/364—Battery terminal connectors with integrated measuring arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
Abstract
The invention discloses a high-precision tester for internal resistance of a storage battery, which comprises a base, a portal frame fixedly arranged on the base and a through groove arranged on a cross beam of the portal frame, wherein a measuring device is arranged on the cross beam and positioned on the left side and the right side of the through groove, the measuring device comprises a vertical plate, a lifting cylinder I and a measuring unit arranged on a piston rod of the lifting cylinder I, the vertical plate is fixedly arranged on the cross beam, the lifting cylinder I is fixedly arranged on the inner end surface of the vertical plate, the measuring unit comprises a cylinder body, a conductive needle, an insulating cylinder and an insulating plate, one end of the insulating cylinder extends into the cylinder body, the insulating plate is fixedly arranged on the bottom surface of the insulating cylinder, the conductive needle axially arranged in the insulating cylinder is fixedly arranged in the insulating cylinder, the bottom surface of the conductive needle is flush with the bottom surface of the insulating plate, and the top end of the conductive needle is connected with a connector of an internal resistance measuring instrument through a wire. The invention has the beneficial effects that: the internal resistance measurement precision is improved, the measurement efficiency is improved, batch measurement is realized, and the working strength of workers is reduced.
Description
Technical Field
The invention relates to the technical field of measurement of internal resistance of a storage battery, in particular to a high-precision tester and a testing method for internal resistance of the storage battery.
Background
The storage battery is widely used as a backup power supply in various industries such as telecommunications, power systems, banks and the like, the reliability and the use performance of the storage battery are critical to the power systems, the internal resistance of the storage battery is an important index for reflecting the performance of the storage battery, and the accurate measurement and calibration of the internal resistance of the storage battery become a common concern in the industry and are also important parameters for constant value management in the power industry.
In a storage battery production workshop, after storage batteries are produced in batches, a quality tester needs to measure the internal resistance of the storage batteries through an internal resistance measuring instrument, if the measured internal resistance does not meet the requirement, the tester eliminates unqualified storage batteries, and if the measured internal resistance meets the designed requirement, the qualified storage batteries are conveyed to a packaging section and are packaged by a packaging machine and then conveyed to a customer. During measurement, a tester clamps one end of the internal resistance measuring instrument on one end of the storage battery, clamps the other end of the internal resistance measuring instrument on the other end of the storage battery, and opens the internal resistance measuring instrument to read the internal resistance of the measured storage battery. However, although this measurement method can realize the measurement of the internal resistance, in the actual measurement, many problems still occur, specifically as follows: 1. the high temperature in the workshop causes the surface temperature of two ends on the storage battery to be high, but the measurement is not carried out under the normal temperature condition, so that the measured internal resistance precision is low, in addition, the air in the measurement environment is wet, and the wet air is adhered to the surface of the ends, so that the measurement precision of the internal resistance is further reduced. 2. The quality inspection is carried out manually, the workload is too large, two chucks on the internal resistance measuring instrument need to be clamped on the two end heads respectively every time, and after the measurement is finished, the chucks need to be taken down, so that the working strength of testers is increased undoubtedly, and the measuring efficiency is reduced simultaneously. 3. The clamping force of the clamping head is large, so that marks can be easily pressed on the end head, and the measuring precision of the internal resistance is influenced. Therefore, a tester which can improve the internal resistance measurement precision, improve the measurement efficiency, realize batch measurement and reduce the working strength of workers is needed urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-precision tester and a high-precision testing method for internal resistance of a storage battery, which have the advantages of compact structure, improvement on internal resistance measurement precision, improvement on measurement efficiency, realization of batch measurement and reduction of working strength of workers.
The purpose of the invention is realized by the following technical scheme: a high-precision tester for internal resistance of a storage battery comprises a base, a portal frame fixedly arranged on the base, and a through groove formed in a cross beam of the portal frame, wherein a measuring device is arranged on the cross beam and positioned on the left side and the right side of the through groove, the measuring device comprises a vertical plate, a lifting cylinder I and a measuring unit arranged on a piston rod of the lifting cylinder I, the vertical plate is fixedly arranged on the cross beam, the lifting cylinder I is fixedly arranged on the inner end surface of the vertical plate, the measuring unit comprises a cylinder body, a conductive needle, an insulating cylinder and an insulating plate, a cover plate is fixedly arranged at the top of the cylinder body, an opening is formed in the bottom of the cylinder body, the cylinder body is fixedly arranged on the piston rod of the lifting cylinder I, the insulating cylinder axially arranged along the cylinder body is slidably arranged on the cover plate, one end of the insulating cylinder extends into the cylinder body, the insulating plate is fixedly arranged on the bottom surface of the insulating cylinder, the conductive needle axially arranged in the insulating cylinder is fixedly arranged in the insulating cylinder, and the bottom surface of the conductive needle is flush with the bottom surface of the insulating plate, the top end of the conductive needle is connected with one joint of the internal resistance measuring instrument through a lead, the insulating cylinder is sleeved with a spring, one end of the spring is fixedly arranged on the insulating plate, and the other end of the spring is fixedly arranged on the cover plate; the bottom of barrel sets firmly the sealing washer, sets firmly on the inner wall of barrel a silica gel section of thick bamboo and temperature sensor, and the centre bore and the battery end external diameter of silica gel section of thick bamboo are equal.
Temperature sensor's signal line runs through the barrel wall and extends outside the barrel, and temperature sensor sets up in the top of a silica gel section of thick bamboo.
The cover plate is fixedly provided with a connecting plate which is fixedly arranged on the action end of the piston rod of the lifting cylinder I.
The two measuring devices are arranged in bilateral symmetry.
The device also comprises a roller way conveying device which is arranged on the base and positioned below the cross beam, and the roller way conveying device is horizontally arranged.
And a limiting mechanism and a positioning mechanism are arranged below the roller of the roller way conveying device.
Stop gear is including setting firmly lift cylinder II on the base, the limiting plate has set firmly on the effect end of lift cylinder II piston rod, and the limiting plate sets up vertically, and is located two adjacent cylinders and forms the region under.
Positioning mechanism sets up in stop gear's right side, and positioning mechanism is including setting firmly lift cylinder III on the base, the effect of lift cylinder III piston rod is served and is set firmly the mounting panel, has set firmly the support on the top surface of mounting panel, and the top of support articulates there is the locating plate, still articulates on the support to have and drives actuating cylinder, and the cylinder that drives actuating cylinder articulates on the support, and the piston rod that drives actuating cylinder articulates on the basal surface of locating plate, the support sets up under two adjacent cylinder formation regions.
The device further comprises a controller, wherein the controller is electrically connected with the temperature sensor, the electromagnetic valve of the lifting cylinder I, the electromagnetic valve of the lifting cylinder II, the electromagnetic valve of the lifting cylinder III and the electromagnetic valve of the driving cylinder.
The testing method of the high-precision tester for the internal resistance of the storage battery comprises the following steps:
s1, placing the storage battery to be measured on the right side of the roller way conveying device by a worker, and ensuring that the end of the storage battery faces upwards to realize the charging of the storage battery;
s2, positioning the storage battery, wherein the specific operation steps are as follows:
s21, controlling a piston rod of the lifting cylinder II to extend upwards, driving a limiting plate to move upwards by the piston rod, and moving the limiting plate to the upper part of the roller after the piston rod is completely extended;
s22, conveying the storage battery from right to left by the roller conveying device, controlling a piston rod of the lifting cylinder III to extend by a worker after the left side surface of the storage battery is blocked by the limiting plate, driving the mounting plate to move upwards by the piston rod, and driving the cylinder and the positioning plate to move to the upper part of the roller after the piston rod is completely extended;
s23, controlling a piston rod of a driving cylinder to extend out, driving a positioning plate to rotate clockwise by the driving cylinder, and enabling the lower edge of the positioning plate to abut against the right side face of the storage battery under driving force, so that the storage battery is positioned, and two ends of the storage battery are respectively positioned right below the cylinders of the two measuring units;
s3, measuring the internal resistance of the storage battery, controlling the piston rods of the lifting cylinders I of the two measuring devices to move downwards, driving the connecting plate to move downwards by the lifting cylinders I, driving the cylinder body to move downwards by the connecting plate, driving the sealing ring to move downwards synchronously until the sealing ring is pressed against the top surface of the storage battery, in the process, the end head firstly enters the silica gel cylinder from the central hole of the sealing ring, then the top surface of the end head contacts the bottom surface of the insulating plate, the conductive needle contacts the top surface of the end head, the storage battery, the lead and the internal resistance measuring instrument form a closed loop, the internal resistance measuring instrument can measure the internal resistance of the storage battery, simultaneously the temperature sensor monitors the temperature in the cylinder in real time, converts the temperature signal into an electric signal and transmits the electric signal to the controller, and when the temperature in the sealed area in the cylinder body is displayed on the controller as normal temperature, a worker reads the value on the internal resistance measuring instrument, the value is the internal resistance of the storage battery, so that the measurement of the internal resistance of the storage battery is realized;
s4, after one storage battery finishes measurement, piston rods of lifting cylinders I of the two measuring devices are limited to retract, and the cylinder body is separated from the end; then controlling a piston rod of the driving cylinder to retract, driving the positioning plate to reset by the driving cylinder, then controlling a piston rod of the lifting cylinder III to reset, after resetting, controlling a piston rod of the lifting cylinder II to reset, driving the limiting plate to retract by the piston rod, enabling the detected storage battery to do linear motion leftwards under the driving of the roller, and screening qualified and unqualified storage batteries by workers on the left side of the roller conveying device;
and S5, repeating the operations of the steps S1-S4, and thus continuously measuring the plurality of storage batteries.
The invention has the following advantages:
1. the bottom of the cylinder body is fixedly provided with a sealing ring, the inner wall of the cylinder body is fixedly provided with a silica gel cylinder and a temperature sensor, and the central hole of the silica gel cylinder is equal to the outer diameter of the end head of a storage battery; when the end head enters the silica gel cylinder, the center hole of the silica gel cylinder is equal to the outer diameter of the end head of the storage battery, and the silica gel cylinder scrapes off the moist water attached to the outer surface of the end head so as to improve the measurement accuracy of the internal resistance.
2. The temperature sensor is used for measuring the temperature in the closed area in the cylinder body, so that the measurement is ensured under the normal temperature condition, and the measurement precision of the internal resistance is greatly improved.
3. The measuring unit comprises a cylinder body, a conductive pin, an insulating cylinder and an insulating plate, wherein a cover plate is fixedly arranged at the top of the cylinder body, an opening is formed in the bottom of the cylinder body, the cylinder body is fixedly arranged on a piston rod of a lifting cylinder I, the insulating cylinder is arranged on the cover plate in the axial direction of the cylinder body in a sliding mode, one end of the insulating cylinder extends into the cylinder body, the insulating plate is fixedly arranged on the bottom surface of the insulating cylinder, the conductive pin is fixedly arranged in the insulating cylinder in the axial direction, the bottom surface of the conductive pin is flush with the bottom surface of the insulating plate, the top end of the conductive pin is connected with a connector of an internal resistance measuring instrument through a lead, the top surface of the terminal is in contact with the bottom surface of the insulating plate as shown in the drawing, the conductive pin is in contact with the top surface of the terminal, the storage battery, the lead and the internal resistance measuring instrument form a closed loop, and the internal resistance measuring instrument can measure the internal resistance of the storage battery; in the measuring process, the end is not clamped by a chuck, so that indentation is avoided, the end is well protected, and the measuring precision is further improved.
4. According to the roller way conveying device, the limiting mechanism and the positioning mechanism are arranged below the roller, and compared with the traditional manual method that one roller way conveying device adopts chuck measurement, the tester greatly improves the measurement efficiency of the storage battery and greatly reduces the working strength of workers.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
FIG. 3 is a schematic structural diagram of a measuring apparatus;
FIG. 4 is a schematic view of the connection of the insulating cylinder and the conductive pin;
FIG. 5 is a schematic structural view of a silicone cylinder;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic view of the charging of the battery;
FIG. 8 is a schematic view of the positioning of the battery;
FIG. 9 is an enlarged partial view of section II of FIG. 8;
FIG. 10 is a schematic diagram of measuring internal resistance of a battery;
FIG. 11 is an enlarged partial view of section III of FIG. 10;
in the figure, 1-base, 2-gantry, 3-through groove, 4-measuring device, 5-vertical plate, 6-lifting cylinder I, 7-measuring unit, 8-barrel, 9-conductive needle, 10-insulating barrel, 11-insulating plate, 12-cover plate, 13-internal resistance measuring instrument, 14-spring, 15-sealing ring, 16-silica gel barrel, 17-temperature sensor, 18-connecting plate, 19-roller conveying device, 20-roller, 21-limiting mechanism, 22-positioning mechanism, 23-lifting cylinder II, 24-limiting plate, 25-lifting cylinder III, 26-mounting plate, 27-bracket, 28-positioning plate, 29-driving cylinder, 30-controller, 31-end head, 32-accumulator, 33-lead
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
as shown in fig. 1 to 9, a high-precision tester for internal resistance of a storage battery comprises a base 1, a portal frame 2 fixed on the base 1, and a through groove 3 arranged on a cross beam of the portal frame 2, wherein a measuring device 4 is arranged on the cross beam and positioned on the left side and the right side of the through groove 3, the measuring device 4 is arranged in bilateral symmetry, the measuring device 4 comprises a vertical plate 5, a lifting cylinder I6 and a measuring unit 7 arranged on a piston rod of the lifting cylinder I6, the vertical plate 5 is fixed on the cross beam, the lifting cylinder I6 is fixed on the inner end surface of the vertical plate 5, the measuring unit 7 comprises a cylinder body 8, a conductive needle 9, an insulating cylinder 10 and an insulating plate 11, a cover plate 12 is fixed on the top of the cylinder body 8, an opening is arranged at the bottom of the cylinder body 8, the cylinder body 8 is fixed on the piston rod of the lifting cylinder I6, an insulating cylinder 10 axially arranged along the cylinder body 8 is slidably mounted on the cover plate 12, and one end of the insulating cylinder 10 extends into the cylinder body 8, an insulating plate 11 is fixedly arranged on the bottom surface of an insulating cylinder 10, a conductive needle 9 arranged along the axial direction of the insulating cylinder 10 is fixedly arranged in the insulating cylinder 10, the bottom surface of the conductive needle 9 is flush with the bottom surface of the insulating plate 11, the top end of the conductive needle 9 is connected with one joint of an internal resistance measuring instrument 13 through a lead 33, a spring 14 is sleeved on the insulating cylinder 10, one end of the spring 14 is fixedly arranged on the insulating plate 11, and the other end of the spring 14 is fixedly arranged on a cover plate 12; the bottom of barrel 8 sets firmly sealing washer 15, sets firmly on the inner wall of barrel 8 a silica gel section of thick bamboo 16 and temperature sensor 17, and the centre bore of silica gel section of thick bamboo 16 is equal with the battery end external diameter.
The signal line of the temperature sensor 17 runs through the wall of the cylinder 8 and extends to the outside of the cylinder 8, and the temperature sensor 17 is arranged above the silica gel cylinder 16. The cover plate 12 is fixedly provided with a connecting plate 18, and the connecting plate 18 is fixedly arranged on the action end of a piston rod of the lifting cylinder I6. The device also comprises a roller way conveying device 19 which is arranged on the base 1 and is positioned below the cross beam, and the roller way conveying device 19 is horizontally arranged.
A limiting mechanism 21 and a positioning mechanism 22 are arranged below the roller 20 of the roller way conveying device 19. Stop gear 21 sets firmly lifting cylinder II23 on base 1 including setting firmly, lifting cylinder II23 piston rod's effect is served and is set firmly limiting plate 24, and limiting plate 24 vertical setting just is located two adjacent cylinders 20 and forms the region under. The positioning mechanism 22 is arranged on the right side of the limiting mechanism 21, the positioning mechanism 22 comprises a lifting cylinder III25 fixedly arranged on the base 1, an installation plate 26 is fixedly arranged on the action end of a piston rod of the lifting cylinder III25, a support 27 is fixedly arranged on the top surface of the installation plate 26, a positioning plate 28 is hinged to the top of the support 27, a driving cylinder 29 is hinged to the support 27, a cylinder barrel of the driving cylinder 29 is hinged to the support 27, a piston rod of the driving cylinder 29 is hinged to the bottom surface of the positioning plate 28, and the support 27 is arranged under the area formed by the two adjacent rollers 20.
It also includes a controller 30 electrically connected to the temperature sensor 17, the solenoid valve of the lift cylinder I6, the solenoid valve of the lift cylinder II23, the solenoid valve of the lift cylinder III25 and the solenoid valve of the drive cylinder 29.
The testing method of the high-precision tester for the internal resistance of the storage battery comprises the following steps of:
s1, placing the storage battery 32 to be measured on the right side of the roller way conveying device 19 by a worker, and ensuring that the end 31 on the storage battery 32 faces upwards to realize the feeding of the storage battery 32, as shown in FIG. 7;
s2, positioning the storage battery, wherein the specific operation steps are as follows:
s21, controlling the piston rod of the lifting cylinder II23 to extend upwards, driving the limit plate 24 to move upwards by the piston rod, and moving the limit plate 24 to the upper part of the roller 20 after the piston rod is completely extended;
s22, conveying the storage battery 32 from right to left by the roller conveying device 19, controlling a piston rod of the lifting cylinder III25 to extend by a worker after the left side surface of the storage battery 32 is blocked by the limiting plate 24, driving the mounting plate 26 to move upwards by the piston rod, and driving the cylinder 29 and the positioning plate 28 to move above the roller 20 after the piston rod is completely extended;
s23, controlling a piston rod of the driving cylinder 29 to extend, driving the positioning plate 28 to rotate clockwise by the driving cylinder 29, and abutting the lower edge of the positioning plate 28 against the right side surface of the storage battery 32 under the driving force, so that the storage battery 32 is positioned as shown in FIGS. 8-9, and two ends 31 of the storage battery 32 are respectively positioned under the cylinders 8 of the two measuring units 7;
s3, measuring the internal resistance of the storage battery, controlling the piston rods of the lifting cylinders I6 of the two measuring devices 4 to move downwards, driving the connecting plate 18 to move downwards by the lifting cylinders I6, driving the cylinder body 8 to move downwards by the connecting plate 18, driving the sealing ring 15 to move downwards synchronously by the cylinder body 8 until the sealing ring 15 is pressed against the top surface of the storage battery 32, in the process, the end head 31 firstly enters the silica gel cylinder 16 from the central hole of the sealing ring 15, then the top surface of the end head 31 is contacted with the bottom surface of the insulating plate 11 as shown in figures 10-11, at the moment, the conductive needle 9 is contacted with the top surface of the end head 31, the storage battery 32, the lead 33 and the internal resistance measuring instrument 13 form a closed loop, the internal resistance measuring instrument 13 can measure the internal resistance of the storage battery 32, meanwhile, the temperature sensor 17 monitors the temperature in the cylinder body 8 in real time, converts the temperature signal into an electric signal and transmits the electric signal to the controller, when the controller shows that the temperature in the sealed area of the cylinder body 8 is normal temperature, a worker reads the value on the internal resistance measuring instrument 13, and the value is the internal resistance of the storage battery 32, so that the internal resistance of the storage battery 32 is measured; when the terminal 31 enters the silicone tube 16, the center hole of the silicone tube 16 is equal to the outer diameter of the terminal of the storage battery, and the silicone tube 16 scrapes off the wet water attached to the outer surface of the terminal 31, so as to improve the measurement accuracy of the internal resistance. In addition, the temperature sensor 17 is used for measuring the temperature in the closed area in the cylinder 8, so that the measurement is ensured under the normal temperature condition, and the measurement precision of the internal resistance is greatly improved; in addition, in the measuring process, the end head 31 is not clamped by a clamping head, so that indentation is avoided, the end head is well protected, and the measuring precision is further improved.
S4, after the measurement of one storage battery 32 is finished, the piston rods of the lifting cylinders I6 of the two measuring devices 4 are limited to retract, and the cylinder body 8 is separated from the end head 31; then, the piston rod of the driving air cylinder 29 is controlled to retract, the driving air cylinder 29 drives the positioning plate 28 to reset, then the piston rod of the lifting air cylinder III25 is controlled to reset, after resetting, the piston rod of the lifting air cylinder II23 is controlled to reset, the piston rod drives the limiting plate 24 to retract, at the moment, the detected storage battery 32 is driven by the roller 20 to do linear motion leftwards, and a worker on the left side of the roller conveying device 19 screens qualified and unqualified storage batteries;
and S5, repeating the operations of the steps S1-S4, and thus continuously measuring the plurality of storage batteries. This tester compares traditional artifical adoption chuck one and measures, very big improvement the measurement of battery efficiency, simultaneously very big work strength who has alleviateed the workman.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a high-accuracy tester of internal resistance of battery which characterized in that: the device comprises a base (1), a portal frame (2) fixedly arranged on the base (1), and a through groove (3) formed in a cross beam of the portal frame (2), wherein a measuring device (4) is arranged on the cross beam and positioned on the left side and the right side of the through groove (3), the measuring device (4) comprises a vertical plate (5), a lifting cylinder I (6) and a measuring unit (7) arranged on a piston rod of the lifting cylinder I (6), the vertical plate (5) is fixedly arranged on the cross beam, the lifting cylinder I (6) is fixedly arranged on the inner end face of the vertical plate (5), the measuring unit (7) comprises a cylinder body (8), a conductive needle (9), an insulating cylinder (10) and an insulating plate (11), a cover plate (12) is fixedly arranged at the top of the cylinder body (8), an opening is arranged at the bottom of the cylinder body (8), the cylinder body (8) is fixedly arranged on the piston rod of the lifting cylinder I (6), the insulating cylinder (10) axially arranged along the cylinder body (8) is slidably arranged on the cover plate (12), one end of an insulating cylinder (10) extends into the cylinder body (8), an insulating plate (11) is fixedly arranged on the bottom surface of the insulating cylinder (10), a conductive needle (9) arranged along the axial direction of the insulating cylinder (10) is fixedly arranged in the insulating cylinder (10), the bottom surface of the conductive needle (9) is flush with the bottom surface of the insulating plate (11), the top end of the conductive needle (9) is connected with one connector of an internal resistance measuring instrument (13) through a wire (33), a spring (14) is sleeved on the insulating cylinder (10), one end of the spring (14) is fixedly arranged on the insulating plate (11), and the other end of the spring is fixedly arranged on a cover plate (12); the bottom of the barrel body (8) is fixedly provided with a sealing ring (15), the inner wall of the barrel body (8) is fixedly provided with a silica gel barrel (16) and a temperature sensor (17), the center hole of the silica gel barrel (16) is equal to the outer diameter of the end head of the storage battery, the solar cell further comprises a roller way conveying device (19) which is arranged on the base (1) and is positioned below the cross beam, the roller way conveying device (19) is horizontally arranged, a limiting mechanism (21) and a positioning mechanism (22) are arranged below a roller (20) of the roller way conveying device (19), the limiting mechanism (21) comprises a lifting cylinder II (23) which is fixedly arranged on the base (1), a limiting plate (24) is fixedly arranged on the action end of a piston rod of the lifting cylinder II (23), the limiting plate (24) is vertically arranged and is positioned under the area formed by two adjacent roller (20), and the positioning mechanism (22) is arranged on the right side of the limiting mechanism (21), positioning mechanism (22) is including setting firmly lift cylinder III (25) on base (1), the effect of lift cylinder III (25) piston rod is served and is set firmly mounting panel (26), has set firmly support (27) on the top surface of mounting panel (26), and the top of support (27) articulates there is locating plate (28), still articulates on support (27) has and drives actuating cylinder (29), and the cylinder that drives actuating cylinder (29) articulates on support (27), and the piston rod that drives actuating cylinder (29) articulates on the basal surface of locating plate (28), support (27) set up under two adjacent cylinders (20) formation region.
2. The high-precision tester for internal resistance of the storage battery according to claim 1, characterized in that: the signal line of temperature sensor (17) runs through barrel (8) wall and extends barrel (8) outside, and temperature sensor (17) set up in the top of silicone tube (16).
3. The high-precision tester for internal resistance of the storage battery according to claim 1, characterized in that: and the cover plate (12) is fixedly provided with a connecting plate (18), and the connecting plate (18) is fixedly arranged on the action end of the piston rod of the lifting cylinder I (6).
4. The high-precision tester for internal resistance of the storage battery according to claim 1, characterized in that: the two measuring devices (4) are arranged in bilateral symmetry.
5. The high-precision tester for internal resistance of the storage battery according to claim 1, characterized in that: the device also comprises a controller (30), wherein the controller is electrically connected with the temperature sensor (17), the electromagnetic valve of the lifting cylinder I (6), the electromagnetic valve of the lifting cylinder II (23), the electromagnetic valve of the lifting cylinder III (25) and the electromagnetic valve of the driving cylinder (29).
6. The test method of the high-precision tester for the internal resistance of the storage battery according to claim 5, characterized in that: it comprises the following steps:
s1, a worker places the storage battery (32) to be measured on the right side of the roller way conveying device (19), and ensures that the end head (31) on the storage battery (32) faces upwards so as to realize the charging of the storage battery (32);
s2, positioning the storage battery, wherein the specific operation steps are as follows:
s21, controlling a piston rod of the lifting cylinder II (23) to extend upwards, driving the limiting plate (24) to move upwards by the piston rod, and moving the limiting plate (24) to the upper part of the roller (20) after the piston rod is completely extended;
s22, conveying the storage battery (32) from right to left by the roller conveying device (19), controlling a piston rod of the lifting cylinder III (25) to extend by a worker after the left side surface of the storage battery (32) is blocked by the limiting plate (24), driving the mounting plate (26) to move upwards by the piston rod, and driving the cylinder (29) and the positioning plate (28) to move above the roller (20) after the piston rod extends completely;
s23, a piston rod of the driving cylinder (29) is controlled to extend out, the driving cylinder (29) drives the positioning plate (28) to rotate clockwise, the lower edge of the positioning plate (28) abuts against the right side face of the storage battery (32) under the driving force, so that the storage battery (32) is positioned, and two ends (31) of the storage battery (32) are respectively positioned under the cylinder bodies (8) of the two measuring units (7);
s3, measuring the internal resistance of the storage battery, controlling piston rods of lifting cylinders I (6) of two measuring devices (4) to move downwards, driving a connecting plate (18) to move downwards by the lifting cylinders I (6), driving a cylinder body (8) to move downwards by the connecting plate (18), driving a sealing ring (15) to synchronously move downwards by the cylinder body (8) until the sealing ring (15) is pressed against the top surface of the storage battery (32), in the process, a terminal (31) enters a silica gel cylinder (16) from a central hole of the sealing ring (15), then the top surface of the terminal (31) is contacted with the bottom surface of an insulating plate (11), at the moment, a conductive needle (9) is contacted with the top surface of the terminal (31), the storage battery (32), a lead (33) and an internal resistance measuring instrument (13) form a closed loop, the internal resistance measuring instrument (13) can measure the internal resistance of the storage battery (32), and a temperature sensor (17) monitors the temperature in the cylinder body (8) in real time, converting the temperature signal into an electric signal and transmitting the electric signal to the controller, and reading a numerical value on the internal resistance measuring instrument (13) by a worker when the temperature in the sealed area in the cylinder (8) is displayed on the controller to be normal temperature, wherein the numerical value is the internal resistance of the storage battery (32), so that the internal resistance of the storage battery (32) is measured;
s4, after one storage battery (32) finishes measurement, the piston rods of the lifting cylinders I (6) of the two measuring devices (4) are limited to retract, and the cylinder body (8) is separated from the end head (31); then controlling a piston rod of a driving cylinder (29) to retract, driving the driving cylinder (29) to drive a positioning plate (28) to reset, then controlling a piston rod of a lifting cylinder III (25) to reset, after resetting, controlling a piston rod of a lifting cylinder II (23) to reset, driving a limiting plate (24) to retract by the piston rod, enabling a detected storage battery (32) to do linear motion leftwards under the driving of a roller (20), and screening qualified and unqualified storage batteries by workers on the left side of a roller conveying device (19);
and S5, repeating the operations of the steps S1-S4, and thus continuously measuring the plurality of storage batteries.
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| CN113391227A (en) | 2021-09-14 |
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