CN112903164B - Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line - Google Patents
Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line Download PDFInfo
- Publication number
- CN112903164B CN112903164B CN202110257885.3A CN202110257885A CN112903164B CN 112903164 B CN112903164 B CN 112903164B CN 202110257885 A CN202110257885 A CN 202110257885A CN 112903164 B CN112903164 B CN 112903164B
- Authority
- CN
- China
- Prior art keywords
- pressure
- internal resistance
- direct contact
- fixed
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The detection device for simultaneously monitoring the internal resistance load pressure and the elastic deformation on line comprises a parallelism self-adaptive adjusting mechanism, a pressure and internal resistance monitoring system, an elastic deformation measuring system, a power output system and a data processing system; one end of the pressure and internal resistance monitoring system is fixed on the parallelism self-adaptive adjusting mechanism, the other end of the pressure and internal resistance monitoring system is fixed on the power output system, and the elastic deformation measuring system is arranged on the side face of the pressure and internal resistance monitoring system; the data processing system is respectively and electrically connected with the pressure and internal resistance monitoring system and the elastic deformation quantity measuring system for data transmission; the data processing system is used for controlling the device to check the internal resistance load pressure and the elastic deformation and processing system data; the system also comprises a power supply which supplies power for other systems. The device enriches the variety of the quality detection device of each procedure of the hydrogen fuel cell, and enhances the quality control management and the safety production coefficient of the hydrogen fuel cell production process.
Description
Technical Field
The invention belongs to the technical field of hydrogen fuel cell detection, and particularly relates to a detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line.
Background
A hydrogen fuel cell is a power generation device that directly converts chemical energy of hydrogen and oxygen into electric energy. The basic principle is that the reverse reaction of electrolyzed water supplies hydrogen and oxygen to the anode and the cathode respectively, and after hydrogen diffuses outwards through the anode and reacts with electrolyte, electrons are released and reach the cathode through external load; the hydrogen fuel cell has no pollution to the environment, the operation of the fuel cell has no noise, the power generation efficiency can reach more than 50%, the hydrogen fuel cell is more popular, the use frequency is higher, and the development prospect is wide. However, the hydrogen fuel cell has very harsh production conditions, because the fuel cell is filled with high-purity hydrogen, the hydrogen is extremely flammable and explosive at normal temperature and normal pressure, and the quality of each process is required to be controlled, so that professional instruments are required to detect the quality in the production process, otherwise, unqualified products are mixed in the production process, the overall performance of the fuel cell is caused by light weight, the quality of the products is influenced, and immeasurable safety production accidents are caused by heavy weight. If in the production process of the hydrogen fuel cell, the quality inspection of the graphite carbon plate, the membrane electrode and the like under the real working environment is required, the synchronous full-true simulation test is usually carried out on the pressure load, the elastic deformation and the internal resistance value under the working state, and the quality condition of the product in the production link of the working procedure is detected, so that the product is absolutely safe and effective before delivery. However, the detection of various indexes such as a graphite carbon plate, a membrane electrode and the like of the hydrogen fuel cell in the current laboratory is separately carried out, and the detection is limited to simple internal resistance measurement or simple deformation test or load-bearing working pressure test, so that the detection has single function and low working efficiency, a plurality of measurement indexes cannot be organically linked in real time to judge the product quality, and the real working condition of a piece to be detected cannot be objectively reflected; and the parallelism self-adaptability of the detection device is poor, and the parallelism self-adaptability of the detection device can be guaranteed only by the machining precision and the assembly tolerance, so that the assembly requirement on the detection device is high, the later-stage equipment is difficult to maintain, and the measurement precision of the detection device is directly influenced.
Disclosure of Invention
Aiming at the problem that a high-precision detection device capable of monitoring the internal resistance, the working pressure, the elastic deformation of a graphite carbon plate, a membrane electrode and the like of a hydrogen fuel cell simultaneously in real time and having parallelism self-adaptability does not exist in the current market, the invention solves the problems that the traditional detection device cannot truly simulate the working state of the hydrogen fuel cell, has single detection index and is low in efficiency. The invention provides a detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line, which is characterized by comprising a parallelism self-adaptive adjusting mechanism, a pressure and internal resistance monitoring system, an elastic deformation measuring system, a power output system and a data processing system;
one end of the pressure and internal resistance monitoring system is fixed on the parallelism self-adaptive adjusting mechanism, the other end of the pressure and internal resistance monitoring system is fixed on the power output system, and the elastic deformation measuring system is arranged on the side face of the pressure and internal resistance monitoring system;
the data processing system is respectively and electrically connected with the pressure and internal resistance monitoring system and the elastic deformation quantity measuring system for data transmission; the data processing system is used for controlling the device to check the internal resistance load pressure and the elastic deformation and processing system data;
the system also comprises a power supply which supplies power for other systems.
Further, the parallelism self-adaptive adjusting mechanism comprises a bottom plate, N springs, an adjusting block and N fasteners, wherein the bottom plate is fixed, one end of each fastener is fixedly connected to the bottom plate, the other end of each fastener firstly penetrates through the springs to be sleeved with the springs, then penetrates through the adjusting block to be locked with the adjusting block, the springs are in clearance fit with the fasteners, and the springs can stretch and retract between the bottom plate and the adjusting block; wherein N is more than or equal to 3, preferably 4; the springs are particularly rectangular springs; the fastener is preferably a flange nut and an inner hexagonal cylindrical head bolt;
the pressure and internal resistance monitoring system comprises an insulating cushion block, a first direct contact, a second direct contact, a pressure sensor, a high-precision internal resistance tester and an electric energy transmission wire, wherein a space for placing a piece to be tested is arranged between the first direct contact and the second direct contact, and the high-precision internal resistance tester is respectively connected with the first direct contact and the second direct contact through the electric energy transmission wire; the first direct contact is fixed on the insulating cushion block, the insulating cushion block is fixed on the adjusting block, the second direct contact is fixed on one end of the pressure sensor, and the other end of the pressure sensor is fixed on the power output system;
the insulating cushion block is a ceramic cushion block;
the elastic deformation measuring system is arranged on one side of the first direct contact head and one side of the second direct contact head, and the elastic deformation of the piece to be measured is detected through the first direct contact head and the second direct contact head;
the power output system comprises an alternating current servo motor, a planetary reducer and a power conversion transmission assembly, wherein the output end of the alternating current servo motor is in transmission connection with the planetary reducer, the planetary reducer is fixedly connected with the power conversion transmission assembly, the alternating current servo motor provides rotating power, the rotating power is reduced through the planetary reducer and then is converted into linear motion power through the power conversion transmission assembly, and the first direct contact and the second direct contact are driven to move relatively linearly;
the data processing system comprises an industrial workstation and test software, wherein the test software is installed on an industrial computer and used for controlling the device to check internal resistance load pressure and elastic deformation and processing system data.
Further, the power conversion transmission assembly comprises a supporting seat, a synchronous pulley box body, a first high-torque synchronous pulley, a synchronous toothed belt, a second high-torque synchronous pulley, a flange bearing, a ball screw nut, a cylinder body extending rod, a ball screw, an electric cylinder body and a linear bearing, wherein the planetary reducer is fixed on one side of the supporting seat, the output end of the planetary reducer is in transmission connection with the first high-torque synchronous pulley, the first high-torque synchronous pulley and the second high-torque synchronous pulley are connected through the synchronous toothed belt, the second high-torque synchronous pulley is arranged at one end of the ball screw, the ball screw sequentially penetrates through the flange bearing, the ball screw nut, the cylinder body extending rod and the linear bearing, the ball screw nut and the cylinder body extending rod are fixedly connected, the ball screw nut and the ball screw are matched to be in spiral transmission, the ball screw nut drives the cylinder body extending rod to move along the ball screw, the synchronous pulley box body is fixed on one side of the supporting seat, the electric cylinder body is fixed on the other side of the supporting seat, the flange bearing is fixed on the supporting seat, and the linear bearing is fixed in the electric cylinder body and is positioned at the output end.
The support frame comprises a workbench surface, two L-shaped vertical plates, a support plate and a T-shaped vertical plate, one end of each L-shaped vertical plate is fixed on the workbench surface, the other end of each L-shaped vertical plate is fixed on the support plate, the support plate is positioned at the middle position of each L-shaped vertical plate, and the T-shaped vertical plate is fixed on the left side of the support plate;
the bottom plate of the parallelism self-adaptive adjusting mechanism is fixed on the workbench surface;
the high-precision internal resistance tester of the pressure and internal resistance monitoring system is arranged on the workbench surface;
the first direct contact of the pressure and internal resistance monitoring system is fixed on the insulating cushion block through an inner hexagon bolt, the insulating cushion block is fixed on the adjusting block, and the insulating cushion block is a ceramic cushion block;
the second direct contact of the pressure and internal resistance monitoring system is fixed on one end of the pressure sensor through an insulating shoulder double-ended stud, and the other end of the pressure sensor is specifically connected and fixed on the cylinder body extension rod through threads;
the industrial workstation of the data processing system is fixed on a T-shaped vertical plate.
Further, the elastic deformation measuring system is a contact type displacement detecting device, and the contact type displacement detecting device is respectively fixed on the first straight contact head and the second straight contact head;
the contact type displacement detection device comprises an insulating connecting block, a buckle sleeve, a contact type displacement sensor and an insulating positioning block, wherein the contact type displacement sensor passes through the buckle sleeve and is clamped on the insulating connecting block, the insulating connecting block is fixed on the second straight contact head, and the insulating positioning block is fixed on the first straight contact head;
further, the intelligent control system further comprises a PLC (programmable logic controller) which is connected with the alternating current servo motor and used for controlling a switch, and the industrial workstation is respectively connected with the PLC, the alternating current servo motor, the high-precision internal resistance tester and the pressure sensor and used for controlling the working state of the element and is connected with a power supply through electric energy conducting wires.
Further, the step of checking the internal resistance load pressure and the elastic deformation amount by the test software control device includes:
s1, writing theoretical range values of internal resistance, load pressure and elastic deformation of a piece to be tested into the test software so as to be compared with test data values;
s2, an initial calibration stage of the device: the testing software triggers the PLC controller, the PLC controller controls the AC servo motor to start working, the second direct contact is pressed down to the position of the set pressure value, the pressure corresponding to the position of the set pressure value is larger than the pressure used in testing to be measured, then the pressure sensor and the contact displacement sensor start working, the displacement measured at the moment is set as an initial value of reference through the testing software, and the initial value is set as an origin O in a compensation mode according to the height of the corresponding piece to be tested, namely the initial value of displacement is added with the height of the piece to be tested to be set as the origin O; the method comprises the steps of carrying out a first treatment on the surface of the
S3, device measurement: loading the to-be-measured piece on a detection table, enabling test software to touch a PLC (programmable logic controller) to enable an alternating current servo motor to drive a second direct contact to move to the height position of the to-be-measured piece, wherein the height which is just in contact with the to-be-measured piece at the moment is an origin O, the pressure is 0N because of the just contact with the to-be-measured piece, after the position of the contact point is reached, the second direct contact moves to the position of a pressure value corresponding to the pressure to be measured, then the second direct contact rises to the position of the origin O, and at the moment, a pressure sensor, a contact displacement sensor and a high-precision internal resistance tester respectively collect the pressure value, the displacement and the internal resistance value corresponding to the process from the origin O to the lowest point to the return to the origin O, and sending real-time monitoring data to an industrial workstation; the industrial workstation is a computer;
s4, device measurement data processing stage: the industrial workstation performs linkage analysis by combining the three on-line monitoring data, when any one data of the pressure value, the displacement amount and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range with red color, makes unqualified marks, counts the number of unqualified products, and when the number of unqualified products does not exceed the theoretical range value, the computer makes final qualified marks and counts the number of qualified products; the unqualified product is marked as NG; the qualified product mark is OK;
s5, device detection completion stage: and the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester no longer collect data when the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester move from the original point O to the initial position, and the detection work is completed.
Further, the step S2 of checking the internal resistance load pressure and the elastic deformation amount by the test software control device further includes the steps of
And S21, before the pressure sensor and the contact displacement sensor start working, the second direct contact is pressed down to the position of the set pressure value to serve as a reference locking parallelism self-adaptive adjusting mechanism.
Further, the step S3 of checking the internal resistance load pressure and the elastic deformation amount by the test software control device further includes the steps of
S31, before measurement starts, setting the working speed of an alternating current servo motor in test software, wherein the speed is rapid when the alternating current servo motor descends from an initial position to an original point O in the pressing process; the speed is set to be slow when the original point O is pressed down to the lowest point and then returns to the original point O.
The device can simulate the operation condition of the workpiece to be tested in a specific working environment, monitor the working condition of the workpiece to be tested in real time, and carry out parameterization management on monitoring data, such as graphite polar plates and membrane electrodes which are sequentially and alternately stacked together to be called a galvanic pile, and are tightly bound together by binding bundles, wherein the pressure existing when the two are bound together, namely working pressure or load pressure, and the device simulates the corresponding tests of internal resistance, load pressure and elastic deformation under the working pressure to screen unqualified products in time; the device has parallelism self-adaptability, has higher detection precision and is convenient for later maintenance; the device has flexible structure, safety, practicability and high detection precision, overcomes the defects of low work parallelism, low detection precision, single function and the like of the traditional detection device, fills up the blank of the instrument for simultaneously detecting graphite polar plates, membrane electrodes and the like in the hydrogen fuel cell market, provides a new thought, a new method and a new way for hydrogen fuel cell detection, and is beneficial to the development of the practical application technology of the hydrogen fuel cell to the mature, efficient and safe direction.
In summary, the invention has the following beneficial effects:
1. the device adopts an innovative design method combining mechanical movement and automatic control measurement technology, fully simulates the operation condition of the to-be-measured piece in a specific working environment, carries out parameterization management on the to-be-measured piece, such as real-time dynamic monitoring on the internal resistance, the elastic deformation and the working pressure of the to-be-measured piece, truly reflects the actual parameter level of the to-be-measured piece, compares the actual detection value with a corresponding theory, can timely find unqualified products, and avoids the unqualified products from flowing into a next procedure; meanwhile, the device can monitor three variables of the internal resistance, the elastic deformation and the working pressure of the piece to be detected in the working state, has complete functions, is different from single variable detection in the traditional detection mode, and greatly improves the working efficiency of the device; and thirdly, the multi-variable simultaneous online monitoring is realized, the working condition of the product existing objectively can be truly reflected, the internal resistance, the elastic deformation and the working pressure of the piece to be tested are built in connection, and only the three are combined to judge the quality of the product.
2. The device is designed with a parallelism self-adaptive adjusting mechanism, when the parallelism of the upper and lower working tables (the coincidence plane of the first straight contact and the second straight contact) of the internal resistance tester is found to be poor in the measuring process of the device, the parallelism of the measuring table can be adjusted through the mechanism, so that a workpiece to be measured and the measuring table are kept parallel, further two end faces to be measured of the workpiece to be measured are uniformly attached to the working face of the internal resistance tester, the actual contact attaching face of the workpiece to be measured is guaranteed to be the theoretical testing working face, the accuracy of a detection result is improved, the inclination of the internal resistance tester during measurement is avoided, the working pressure of the workpiece to be measured is uneven, finally, the situation of error of the measurement result is caused, because the stress of the workpiece to be measured affects the contact area of the workpiece to be measured, the contact area affects the measured charge quantity, the converted internal resistance is different, and R=U/A.
3. The elastic deformation amount measuring system adopts a contact type displacement detection device, is different from other detection instruments such as laser, has higher detection accuracy, and is more in line with the detection of micro-elastic deformation amounts of graphite carbon plates, membrane electrodes and the like.
4. The device provided by the invention has the advantages that the measurement result is safe and reliable, the quality of the quality detection device of each procedure of the hydrogen fuel cell is enriched through the development and application of the device, the quality control management and the safety production coefficient of the hydrogen fuel cell production process are enhanced, and the rapid development of the hydrogen fuel cell industry is promoted.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present invention;
FIG. 2 is a schematic diagram of a support frame structure;
FIG. 3 is a schematic diagram of a parallelism self-adaptive adjustment mechanism, pressure and internal resistance monitoring system;
FIG. 4 is a schematic diagram of a spring deflection measurement system;
FIG. 5 is a schematic view of an insulated shouldered stud structure;
FIG. 6 is a schematic diagram of a power take-off system configuration;
in the figure: 1-a supporting frame; 2-a parallelism self-adaptive adjusting mechanism; 3-a pressure and internal resistance monitoring system; 4-elastic deformation amount measuring system; 5-a power take-off system; 6-a data processing system; 7-a working table; 8-L-shaped vertical plates; 9-a support plate; 10-T-shaped vertical plates; 11-a bottom plate; 12-rectangular springs; 13-adjusting the block; 14-a flange nut; 15-hexagon socket head cap bolts; 16-ceramic cushion blocks; 17-a first straight contact; 18-a second direct contact; 19-a pressure sensor; 20-an alternating current servo motor; 21-planetary reducer; 22-insulating shouldered studs; 23-an electrical energy conducting wire; 24-insulating connecting blocks; 25-a buckle sleeve; 26-contact displacement sensor; 27-a supporting seat; 28-a synchronous pulley box body; 29-a first high torque synchronizing wheel; 30-synchronizing a toothed belt; 31-a second high torque synchronizing wheel; 32-flange bearings; 33-ball screw nut; 34-cylinder extension bar; 35-ball screw; 36-an electric cylinder body; 37-linear bearings; 38-a high-precision internal resistance tester; 39-insulating positioning blocks.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1: 1-6, the parallelism self-adaptive high-precision internal resistance testing device comprises a supporting frame, a parallelism self-adaptive adjusting mechanism, a pressure and internal resistance monitoring system, an elastic deformation measuring system, a power output system and a data processing system; the device comprises a parallelism self-adaptive adjusting mechanism, a power output system and a data processing system, wherein the parallelism self-adaptive adjusting mechanism, the power output system and the data processing system are respectively fixed on a support frame;
the support frame 1 comprises a working table 7, two L-shaped vertical plates 8, a support plate 9 and a T-shaped vertical plate 10, one end of each L-shaped vertical plate 8 is fixed on the working table 7, the other end of each L-shaped vertical plate 8 is fixed on the support plate 9, the support plate is positioned at the middle position of each L-shaped vertical plate 8, and the T-shaped vertical plate 10 is fixed on the left side of the support plate 9;
the parallelism self-adaptive adjusting mechanism 2 comprises a bottom plate 11, four rectangular springs 12, an adjusting block 13 and four fasteners, wherein the four fasteners comprise four flange nuts 14 and four inner hexagonal cylindrical studs 15, the bottom plate 11 is fixed on the workbench 7 by screws, one ends of the four inner hexagonal cylindrical studs 15 are fastened on the bottom plate 11 through threaded connection, the other ends of the four inner hexagonal cylindrical studs 15 respectively penetrate through the four rectangular springs 12, the adjusting block 13 and the four flange nuts 14 and are sleeved on the four inner hexagonal cylindrical studs 15 in sequence, the four flange nuts 14 play a locking role, the four rectangular springs 12 are positioned between the bottom plate 11 and the adjusting block 13, the adjusting block 13 is positioned between the four rectangular springs 12 and the four flange nuts 14, the four rectangular springs 12 are in clearance fit with the four inner hexagonal cylindrical studs 15, and the rectangular springs 12 can move up and down along the inner hexagonal cylindrical studs 15 along with the screwing tightness of the flange nuts 14, namely the rectangular springs 12 can move in a telescopic manner between the bottom plate 11 and the adjusting block 13;
the pressure and internal resistance monitoring system 3 comprises a ceramic cushion block 16, a first straight contact 17, a second direct contact 18, a pressure sensor 19, a high-precision internal resistance tester 38, an insulating shouldered stud 22 and an electric energy conducting wire 23, wherein the high-precision internal resistance tester 38 is arranged on the workbench surface 7 and is respectively connected with the first straight contact 17 and the second direct contact 18 through the electric energy conducting wire 23, the first straight contact 17 is fixed on the ceramic cushion block 16 through an inner hexagon bolt, the ceramic cushion block 16 is fixed on the adjusting block 13, the second direct contact 18 is fixed on one end of the pressure sensor 19 through the shouldered stud 22, and the other end of the pressure sensor 19 is fixedly connected with a cylinder body extending rod 34 through a threaded connection; wherein, a space for placing the to-be-tested piece is arranged between the first direct contact 17 and the second direct contact 18;
the elastic deformation measuring system 4 is respectively arranged at one side of the first direct contact 17 and one side of the second direct contact 18, and detects the elastic deformation of the piece to be detected through the first direct contact 17 and the second direct contact 18;
the power output system 5 comprises an alternating current servo motor 20, a planetary reducer 21 and a power conversion transmission assembly, wherein the output end of the alternating current servo motor 20 is in transmission connection with the planetary reducer 21, the planetary reducer 21 is fixedly connected with the power conversion transmission assembly, the alternating current servo motor 20 provides rotating power, the rotating power is reduced through the planetary reducer 21 and is then converted into linear motion power through the power conversion transmission assembly, and the first direct contact 17 and the second direct contact are driven to move relatively linearly;
specifically, the power output system 5 comprises an alternating current servo motor 20, a planetary reducer 21 and a power conversion transmission assembly, wherein the power conversion transmission assembly comprises a supporting seat 27, a synchronous pulley box 28, a first high-torque synchronous pulley 29, a synchronous toothed belt 30, a second high-torque synchronous pulley 31, a flange bearing 32, a ball screw nut 33, a cylinder body extending rod 34, a ball screw 35, an electric cylinder body 36 and a linear bearing 37, the output end of the alternating current servo motor 20 is in transmission connection with the planetary reducer 21, the planetary reducer 21 is fixed on one side of the supporting seat 27, the output end of the planetary reducer is in transmission connection with the first high-torque synchronous pulley 29, the first high-torque synchronous pulley 29 and the second high-torque synchronous pulley 31 are connected through the synchronous toothed belt 30, the second high-torque synchronous pulley 31 is arranged on one end of the ball screw 35, the ball screw 35 sequentially passes through the flange bearing 32, the ball screw nut 33, the cylinder body extending rod 34 and the linear bearing 37, the ball screw nut 33 is fixedly connected with the cylinder body extending rod 34, the ball screw nut 33 is matched with the ball screw 35 to be in spiral transmission, the ball screw nut 33 drives the cylinder body extending rod 34 to move along the ball screw 35, the synchronous pulley box 28 is fixed on one side of the supporting seat 27, the electric cylinder body is fixed on the other side of the supporting seat 36, and the electric cylinder body is fixed on the electric cylinder body 36, and is fixed on the other side of the electric cylinder body 27, and is fixed on the linear bearing 37;
the industrial workstation of the data processing system 6 is fixed on the T-shaped riser 10, and comprises an industrial workstation and test software which is installed on an industrial computer for the control device to check the internal resistance load pressure and the elastic deformation and process the system data.
Example 2: the device structure of the embodiment is the same as that of the embodiment 1, except that the elastic deformation measuring system 4 is a contact type displacement detecting device which is respectively fixed on the first direct contact 17 and the second direct contact 18; the contact type displacement detection device comprises an insulating connecting block 24, a buckle sleeve 25, a contact type displacement sensor 26 and an insulating positioning block 39, wherein the contact type displacement sensor 26 passes through the buckle sleeve 25 and is clamped on the insulating connecting block 24, the insulating connecting block 24 is fixed on the second direct contact 18, and the insulating positioning block 39 is fixed on the first direct contact 17;
the detection apparatus of the present embodiment is also different from embodiment 1 in that: the industrial workstation is connected with the PLC, the alternating current servo motor, the high-precision internal resistance tester and the pressure sensor respectively and is used for controlling the working state of the element and is connected with a power supply through an electric energy conducting wire.
Also different from example 1 is that: the data processing system 6 comprises an industrial workstation and test software, wherein the industrial computer is fixed on the T-shaped vertical plate 10, and the test software is installed on the industrial computer and used for controlling the device and processing system data;
the step of checking the internal resistance load pressure and the elastic deformation amount by the test software control device comprises the following steps:
s1, writing theoretical range values of internal resistance, load pressure and elastic deformation of a piece to be tested into the test software so as to be compared with test data values;
s11, device starting stage: turning on a power switch to start the device of the invention, and enabling the industrial computer, the PLC controller, the pressure sensor 19, the contact displacement sensor 26 and the high-precision internal resistance tester 21 to be in a power-on state;
s2, an initial calibration stage of the device: starting an industrial computer, running test software, triggering a PLC (programmable logic controller) by the test software, controlling an alternating current servo motor 20 to start working, enabling a second direct contact 18 to be pressed down to a position with a set pressure value, wherein the position is a position locked by a self-adaptive parallelism adjusting mechanism, at the moment, the contact surfaces of a first direct contact and the second direct contact are two surfaces with high adjusted parallelism, the pressure corresponding to the position with the set pressure value is larger than the pressure used when the test is to be performed, namely the measured pressure of a to-be-measured piece, then the pressure sensor 19 and the contact displacement sensor 26 start working, the displacement measured at the moment is set to be an initial value of reference by the test software, and the initial value of the displacement is set to be an origin O by adopting a compensation mode according to the height of the corresponding to-be-measured piece, namely the initial value of the displacement is set to be the origin O by adding the height value of the to be-measured piece, namely the initial value of the displacement minus the height of the to be-measured piece is set to be the origin O, and the position of the second direct contact to be-measured piece is set to be the origin O, namely the position of the origin is 0;
step S2 also comprises the steps of
And S21, before the pressure sensor 19 and the contact displacement sensor 26 start working, the second direct contact 18 is pressed down to the position of the set pressure value as a reference to lock the parallelism self-adaptive adjusting mechanism 2.
S3, device measurement: loading the to-be-measured piece on a detection table, enabling the testing software to touch the PLC controller to enable the alternating current servo motor 20 to drive the second direct contact 18 to move to the height position of the to-be-measured piece, wherein the height which is just contacted with the to-be-measured piece at the moment is the original point O, the pressure is 0N because the second direct contact 18 is just contacted with the to-be-measured piece, after the contact point position is reached, the second direct contact 18 moves to the pressure value position corresponding to the pressure to be measured, the pressure to be measured is a force which is definitely given, the to-be-measured piece is applied to a certain pressure, the force is applied to the given pressure from 0, and the corresponding relation among variables in the pressure range is observed; then, the pressure sensor 19, the contact displacement sensor 26 and the high-precision internal resistance tester 21 respectively collect the pressure value, the displacement and the internal resistance value corresponding to the process from the initial point O to the lowest point to return to the initial point O, take the position of the maximum elastic deformation corresponding to the maximum pressure applied by the piece to be tested as the lowest point, and send real-time monitoring data to an industrial workstation, namely a computer;
step S3 also comprises the steps of
S31, before detection starts, the working speed of the alternating current servo motor 20 is set in test software, and the speed is fast when the alternating current servo motor is lowered from an initial position to an original point O in the pressing process; the speed is set to be slow when the original point O is pressed down to the lowest point and then returns to the original point O.
S4, device measurement data processing stage: the industrial workstation computer performs linkage analysis by combining the three on-line monitoring data, when any one data of the pressure value, the displacement amount and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range with red color, makes an unqualified NG mark, counts the number of unqualified NG products, and when the number of unqualified NG products does not exceed the theoretical range value, the computer makes a final qualified OK mark and counts the number of qualified OK products;
s5, device detection completion stage: the pressure sensor 19, the contact displacement sensor 26 and the high-precision internal resistance tester 21 no longer collect data when moving from the origin O position to the initial position, and the detection work is completed. In particular, from the high efficiency aspect, each piece to be detected is only required to be quickly moved to a certain height H1 from the original point O position, and when all pieces to be detected are detected, the pieces to be detected are quickly moved to an initial position H2 from the original point O position, H1 is smaller than H2, so that the distance, namely the time, is saved, and the efficiency is improved.
The using method of the device comprises the following steps:
when the device is used for the first time, the idle running device firstly adjusts the parallelism self-adaptive adjusting mechanism 2 to a required position, namely the parallelism of a detection workbench surface is corrected, then a piece to be detected is placed in the detection device, the device is started to enter a working mode, the power output system 5 starts to operate and approaches the piece to be detected, when the power output system 5 starts to touch the piece to be detected, the piece to be detected and the pressure form a closed loop with the internal resistance monitoring system 3, and the real-time dynamic detection is carried out through the pressure and internal resistance monitoring system 3 and the elastic deformation measuring system 4, and the data processing system 6 records the detection result and judges the quality condition of a product.
Specifically, in the initial state, the first direct contact 17 and the second direct contact 18 keep a certain distance, test software on the industrial workstation is started to trigger the PLC controller, the alternating current servo motor 20 starts to work, the alternating current servo motor 20 drives the planetary reducer 21 to enable the first high-torque synchronous wheel 29 to drive the second high-torque synchronous wheel 31 to rotate through the synchronous toothed belt 30, the second high-torque synchronous wheel 31 drives the ball screw 35 to rotate, the ball screw nut 33 moves along the ball screw 35, the cylinder extension rod 34 moves along with the movement of the ball screw nut 33, the cylinder extension rod 34 drives the pressure sensor 19, the second direct contact 18 and the contact displacement sensor 26 to move close to the first direct contact 17, and the second direct contact 18 starts to contact the first direct contact 17 and slowly compress the first direct contact. The first straight contact 17 compresses the rectangular spring 12 to move downwards through the ceramic cushion block 16 and the adjusting block 13 respectively in the process of being compressed by the second direct contact 18, the downward movement is stopped until the preset pressure value is reached, at the moment, the contact surfaces of the first straight contact 17 and the second direct contact 18 are parallel surfaces, the flange nut 14 is locked by the force with the same force, so that the parallelism self-adaptive adjusting mechanism 2 is fixed, the flatness adjusting process is completed, and at the moment, the contact surfaces of the first straight contact and the second direct contact are two surfaces with high adjusted parallelism; restarting the reset button the ac servo motor 20 begins to reverse to restore the device to its original state. The preset pressure value is a manually set compression locking force, and the preset pressure requirement is larger than the downward pressure to be measured. The compression locking force is the locking force of the parallelism self-adaptive adjusting mechanism, and the maximum value setting principle is that the spring can bear and the force is larger than the force to be measured on the piece to be measured; the force setting principle of the measured piece to be measured is that the spring and the measured piece can bear, and the force setting principle is smaller than the locking force of the parallelism self-adaptive adjusting mechanism.
Similarly, when the device is used for measurement, the to-be-measured piece is placed on the first straight contact head 17, the to-be-measured piece is located between the first straight contact head 17 and the second straight contact head 18, the detection device is started, like the running condition in no-load, the second straight contact head 18 starts to contact the to-be-measured piece and is pressed to the required pressure value to be measured pressure value slowly, at the moment, the data processing system 6 monitors and records the data of the pressure sensor 19, the contact displacement sensor 26 and the high-precision internal resistance tester 38 in real time and compares the data with the reference theoretical value, and when the recorded actual measured value exceeds the theoretical value range, the data processing system 6 identifies an abnormal value and gives an NG interface prompt. Specifically, the to-be-measured piece is clamped between the first direct contact 17 and the second direct contact 18, and a loop is formed between the first direct contact 17 and the second direct contact 18 and the to-be-measured piece when the first direct contact and the second direct contact are electrified and are in a discharging working state; the graphite polar plates and the membrane electrodes are sequentially and alternately stacked together and then are bound and tightly formed into a galvanic pile by binding, and the pressure existing in the binding together, namely the working pressure, is simulated by the device for detecting the working pressure.
When all tests are completed, the second direct contact 18 begins to rise upwards, away from the part to be tested, to the initial position, thus completing a test task.
The working pressure of the hydrogen fuel cell means that the working pressure exists in internal components such as a graphite carbon plate, a membrane electrode stack and the like when the hydrogen fuel cell works; the working pressure of the detection device is the pressure born by the device simulation galvanic pile in the working state; the hydrogen fuel cell operating pressure and the detecting device operating pressure, one refers to the actual operating pressure of the hydrogen fuel cell stack, and the other is the amount when the operating pressure of the stack of the part to be detected is simulated.
Claims (9)
1. The detection device for simultaneously monitoring the internal resistance load pressure and the elastic deformation on line is characterized by comprising a parallelism self-adaptive adjusting mechanism, a pressure and internal resistance monitoring system, an elastic deformation measuring system, a power output system and a data processing system;
one end of the pressure and internal resistance monitoring system is fixed on the parallelism self-adaptive adjusting mechanism, the other end of the pressure and internal resistance monitoring system is fixed on the power output system, and the elastic deformation measuring system is arranged on the side face of the pressure and internal resistance monitoring system;
the data processing system is respectively and electrically connected with the pressure and internal resistance monitoring system and the elastic deformation quantity measuring system for data transmission; the data processing system is used for controlling the device to check the internal resistance load pressure and the elastic deformation and processing system data;
the system also comprises a power supply, wherein the power supply supplies power for other systems;
the parallelism self-adaptive adjusting mechanism comprises a bottom plate, N springs, an adjusting block and N fasteners, wherein the bottom plate is fixed, one end of each fastener is fixedly connected to the bottom plate, the other end of each fastener firstly penetrates through the springs to be sleeved with the springs, then penetrates through the adjusting block to be locked with the adjusting block, the springs are in clearance fit with the fasteners, and the springs can stretch and retract between the bottom plate and the adjusting block; wherein N is more than or equal to 3;
the pressure and internal resistance monitoring system comprises an insulating cushion block, a first direct contact, a second direct contact, a pressure sensor, a high-precision internal resistance tester and an electric energy transmission wire, wherein a space for placing a piece to be tested is arranged between the first direct contact and the second direct contact, and the high-precision internal resistance tester is respectively connected with the first direct contact and the second direct contact through the electric energy transmission wire; the first direct contact is fixed on the insulating cushion block, the insulating cushion block is fixed on the adjusting block, the second direct contact is fixed on one end of the pressure sensor, and the other end of the pressure sensor is fixed on the power output system;
the elastic deformation measuring system is arranged on one side of the first direct contact head and one side of the second direct contact head, and the elastic deformation of the piece to be measured is detected through the first direct contact head and the second direct contact head;
the power output system comprises an alternating current servo motor, a planetary reducer and a power conversion transmission assembly, wherein the output end of the alternating current servo motor is in transmission connection with the planetary reducer, the planetary reducer is fixedly connected with the power conversion transmission assembly, the alternating current servo motor provides rotating power, the rotating power is reduced through the planetary reducer and then is converted into linear motion power through the power conversion transmission assembly, and the first direct contact and the second direct contact are driven to move relatively linearly;
the data processing system comprises an industrial workstation and test software, wherein the test software is installed on an industrial computer and used for controlling the device to check internal resistance load pressure and elastic deformation and processing system data.
2. The device of claim 1, wherein the power conversion transmission assembly comprises a supporting seat, a synchronous pulley box body, a first high-torque synchronous pulley, a synchronous toothed belt, a second high-torque synchronous pulley, a flange bearing, a ball screw nut, a cylinder body extending rod, a ball screw, an electric cylinder body and a linear bearing, the planetary reducer is fixed on one side of the supporting seat and the output end of the planetary reducer is in transmission connection with the first high-torque synchronous pulley, the first high-torque synchronous pulley and the second high-torque synchronous pulley are connected through the synchronous toothed belt, the second high-torque synchronous pulley is arranged at one end of the ball screw, the ball screw sequentially penetrates through the flange bearing, the ball screw nut, the cylinder body extending rod and the linear bearing, the ball screw nut and the cylinder body extending rod are fixedly connected with each other to form a spiral transmission, the ball screw nut drives the cylinder body extending rod to move along the ball screw, the synchronous pulley box is fixed on one side of the supporting seat, the electric cylinder body is fixed on the other side of the supporting seat, the flange bearing is fixed on the supporting seat, and the linear bearing is fixed in the electric cylinder body and is positioned on the output end.
3. The device of claim 2, further comprising a support frame, wherein the support frame comprises a working table surface, two L-shaped vertical plates, a support plate and a T-shaped vertical plate, one end of the two L-shaped vertical plates is fixed on the working table surface, the other end is fixed on the support plate, the support plate is positioned at the middle position of the two L-shaped vertical plates, and the T-shaped vertical plate is fixed at the left side of the support plate;
the bottom plate of the parallelism self-adaptive adjusting mechanism is fixed on the workbench surface;
the high-precision internal resistance tester of the pressure and internal resistance monitoring system is arranged on the workbench surface;
the first direct contact of the pressure and internal resistance monitoring system is fixed on an insulating cushion block, the insulating cushion block is fixed on an adjusting block, and the insulating cushion block is a ceramic cushion block;
the second direct contact of the pressure and internal resistance monitoring system is fixed on one end of the pressure sensor through a double-ended stud with a shoulder, and the other end of the pressure sensor is specifically connected and fixed on the cylinder body extending rod through threads;
the industrial workstation of the data processing system is fixed on a T-shaped vertical plate.
4. A device according to claim 3, wherein the elastic deformation measuring system is a contact displacement detecting device, and the contact displacement detecting devices are respectively fixed on the first straight contact head and the second straight contact head;
the contact type displacement detection device comprises an insulating connecting block, a buckle sleeve, a contact type displacement sensor and an insulating positioning block, wherein the contact type displacement sensor passes through the buckle sleeve and is clamped on the insulating connecting block, the insulating connecting block is fixed on the second straight contact head, and the insulating positioning block is fixed on the first straight contact head.
5. The apparatus of any one of claims 1-4, further comprising a PLC controller connected to the ac servo motor for controlling the switch, wherein the industrial workstation is connected to the PLC controller, the ac servo motor, the high-precision internal resistance tester, the pressure sensor, and for controlling the operation state of the components, and is connected to the power supply through electric power transmission lines.
6. The apparatus of claim 1, wherein the step of the test software control means performing the check of the internal resistance load pressure and the elastic deformation amount comprises:
s1, writing theoretical range values of internal resistance, load pressure and elastic deformation of a piece to be tested into the test software so as to be compared with test data values;
s2, an initial calibration stage of the device: the testing software triggers the PLC controller, the PLC controller controls the AC servo motor to start working, the second direct contact is pressed down to the position of the set pressure value, the pressure corresponding to the position of the set pressure value is larger than the pressure used in testing to be measured, then the pressure sensor and the contact displacement sensor start working, the displacement measured at the moment is set as an initial value of reference through the testing software, and the initial value is set as an origin O in a compensation mode according to the height of the corresponding piece to be tested, namely the initial value of displacement is added with the height of the piece to be tested to be set as the origin O;
s3, device measurement: loading the to-be-measured piece on a detection table, enabling test software to touch a PLC (programmable logic controller) to enable an alternating current servo motor to drive a second direct contact to move to the height position of the to-be-measured piece, wherein the height which is just in contact with the to-be-measured piece at the moment is an origin O, the pressure is 0N because of the just contact with the to-be-measured piece, after the position of the contact point is reached, the second direct contact moves to the position of a pressure value corresponding to the pressure to be measured, then the second direct contact rises to the position of the origin O, and at the moment, a pressure sensor, a contact displacement sensor and a high-precision internal resistance tester respectively collect the pressure value, the displacement and the internal resistance value corresponding to the process from the origin O to the lowest point to the return to the origin O, and sending real-time monitoring data to an industrial workstation;
s4, device measurement data processing stage: the industrial workstation performs linkage analysis by combining the three on-line monitoring data, when any one data of the pressure value, the displacement amount and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range with red color, makes unqualified marks, counts the number of unqualified products, and when the number of unqualified products does not exceed the theoretical range value, the computer makes final qualified marks and counts the number of qualified products;
s5, device detection completion stage: and the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester no longer collect data when the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester move from the original point O to the initial position, and the detection work is completed.
7. The apparatus of claim 5, wherein said test software control means checks for internal resistance load pressure and elastic deformation amount comprising:
s1, writing theoretical range values of internal resistance, load pressure and elastic deformation of a piece to be tested into the test software so as to be compared with test data values;
s2, an initial calibration stage of the device: the testing software triggers the PLC controller, the PLC controller controls the AC servo motor to start working, the second direct contact is pressed down to the position of the set pressure value, the pressure corresponding to the position of the set pressure value is larger than the pressure used when the measurement is to be performed, then the pressure sensor and the contact displacement sensor start working, the displacement measured at the moment is set as initial values of reference through the testing software, and the initial values are set as original points O in a compensation mode according to the height of the corresponding piece to be measured, namely the initial values of the displacement are added with the height of the piece to be measured to be set as the original points O;
s3, device measurement: loading the to-be-measured piece on a detection table, enabling test software to touch a PLC (programmable logic controller) to enable an alternating current servo motor to drive a second direct contact to move to the height position of the to-be-measured piece, wherein the height which is just in contact with the to-be-measured piece at the moment is an origin O, the pressure is 0N because of the just contact with the to-be-measured piece, after the position of the contact point is reached, the second direct contact moves to the position of a pressure value corresponding to the pressure to be measured, then the second direct contact rises to the position of the origin O, and at the moment, a pressure sensor, a contact displacement sensor and a high-precision internal resistance tester respectively collect the pressure value, the displacement and the internal resistance value corresponding to the process from the origin O to the lowest point to the return to the origin O, and sending real-time monitoring data to an industrial workstation;
s4, device measurement data processing stage: the industrial workstation performs linkage analysis by combining the three on-line monitoring data, when any one data of the pressure value, the displacement amount and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range with red color, makes unqualified marks, counts the number of unqualified products, and when the number of unqualified products does not exceed the theoretical range value, the computer makes final qualified marks and counts the number of qualified products;
s5, device detection completion stage: and the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester no longer collect data when the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester move from the original point O to the initial position, and the detection work is completed.
8. The device according to claim 6 or 7, wherein the step S2 of checking the internal resistance load pressure and the elastic deformation amount by the test software control device further comprises the steps of
And S21, before the pressure sensor and the contact displacement sensor start working, the second direct contact is pressed down to the position of the set pressure value to serve as a reference locking parallelism self-adaptive adjusting mechanism.
9. The device according to claim 6 or 7, wherein said test software control means further comprises the step of performing the check of the internal resistance load pressure and the elastic deformation amount in step S3
S31, before detection starts, setting the working speed of an alternating current servo motor in test software, wherein the speed is rapid when the alternating current servo motor descends from an initial position to an original point O in the pressing process; the speed is set to be slow when the original point O is pressed down to the lowest point and then returns to the original point O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110257885.3A CN112903164B (en) | 2021-03-09 | 2021-03-09 | Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110257885.3A CN112903164B (en) | 2021-03-09 | 2021-03-09 | Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112903164A CN112903164A (en) | 2021-06-04 |
| CN112903164B true CN112903164B (en) | 2023-07-14 |
Family
ID=76108394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110257885.3A Active CN112903164B (en) | 2021-03-09 | 2021-03-09 | Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112903164B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654520B (en) * | 2021-06-30 | 2024-01-30 | 江苏南水科技有限公司 | Intelligent inclinometry method with local self-calibration function |
| CN115165338A (en) * | 2022-08-26 | 2022-10-11 | 常州武进中瑞电子科技股份有限公司 | A test device for the flipping force of a large lithium sheet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165253A (en) * | 2019-05-06 | 2019-08-23 | 武汉理工大学 | A kind of PEM pile method for monitoring operation states and system |
| CN111537126A (en) * | 2020-04-28 | 2020-08-14 | 苏州清陶新能源科技有限公司 | Tool for determining pretightening force of soft package battery, method for determining pretightening force of soft package battery and method for assembling module |
| CN111697280A (en) * | 2020-06-22 | 2020-09-22 | 清华大学 | Battery device capable of monitoring electrode stress change in real time, battery adopting device and application of device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3180529B2 (en) * | 1993-09-27 | 2001-06-25 | 富士通株式会社 | Battery level monitoring circuit |
| LU90309B1 (en) * | 1998-11-04 | 2000-05-05 | Iee Sarl | Passenger detector |
| CN201251621Y (en) * | 2008-08-15 | 2009-06-03 | 天津力神电池股份有限公司 | Detection device for voltage internal resistance of steady pressure lithium ion battery |
| CN108226803B (en) * | 2018-01-15 | 2020-02-14 | 山东鼎瑞新能源科技有限公司 | Variable extrusion force battery testing method and system |
| CN208860510U (en) * | 2018-10-19 | 2019-05-14 | 惠州亿纬锂能股份有限公司 | A kind of expansive force and swell increment test device |
| CN109990937A (en) * | 2019-03-29 | 2019-07-09 | 东莞天予天正新能源科技有限公司 | A kind of lithium ion battery stress test equipment and its test method |
| CN210222219U (en) * | 2019-05-10 | 2020-03-31 | 武汉交通职业学院 | Internal resistance detection device for power battery module |
| US11131714B2 (en) * | 2019-05-31 | 2021-09-28 | Sigmasense, Llc. | Battery monitoring and characterization during charging |
| CN211293187U (en) * | 2019-10-22 | 2020-08-18 | 东莞市创明电池技术有限公司 | Battery internal resistance fluctuation detection auxiliary device |
| CN111580004A (en) * | 2020-05-12 | 2020-08-25 | 珠海冠宇电池股份有限公司 | Battery detection method, device, equipment and computer readable storage medium |
| CN111812537A (en) * | 2020-05-29 | 2020-10-23 | 厦门领航互联信息技术有限公司 | An online real-time monitoring system for battery internal resistance |
-
2021
- 2021-03-09 CN CN202110257885.3A patent/CN112903164B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165253A (en) * | 2019-05-06 | 2019-08-23 | 武汉理工大学 | A kind of PEM pile method for monitoring operation states and system |
| CN111537126A (en) * | 2020-04-28 | 2020-08-14 | 苏州清陶新能源科技有限公司 | Tool for determining pretightening force of soft package battery, method for determining pretightening force of soft package battery and method for assembling module |
| CN111697280A (en) * | 2020-06-22 | 2020-09-22 | 清华大学 | Battery device capable of monitoring electrode stress change in real time, battery adopting device and application of device |
Non-Patent Citations (1)
| Title |
|---|
| Electrical characteristics analysis of 18650 lithium-ion battery pack with the earthquake vibration condition;Seongyun Park 等;《2020 20th International Conference on Control, Automation and Systems (ICCAS)》;第360-364页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112903164A (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112903164B (en) | Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line | |
| CN106532156A (en) | Expansion measurement apparatus for power battery | |
| CN115112491B (en) | Two-dimensional travel expansion irradiation relaxation full-automatic detection device and method | |
| CN117805454A (en) | Charging gun detection platform | |
| CN211904048U (en) | In-situ cell expansion thickness measuring instrument | |
| CN212722435U (en) | Normal load loading device based on single-shaft fatigue testing machine | |
| CN101881690A (en) | Liquefied Petroleum Gas Cylinder Valve High-Pressure Closing and Sealing Testing Platform and Testing Method | |
| CN118837764A (en) | Test system for testing constant pressure and constant gap of cell expansion | |
| CN217112650U (en) | Battery module low-voltage insulation test part | |
| CN201277591Y (en) | Service life tester for lighter | |
| CN219038239U (en) | Torsion testing device and test monitoring system | |
| CN210550626U (en) | Compressing tool for sealing electronic equipment | |
| CN211965047U (en) | Device for rapidly detecting height of rotor | |
| CN210346958U (en) | Ball screw pair efficiency detection device | |
| CN222774169U (en) | Electric wrench torque testing device | |
| CN222319096U (en) | Blade battery expansion testing device | |
| CN204422202U (en) | Automatic catch flywheel shaft is to fatigue tester | |
| CN216802649U (en) | Load testing device for numerical control machine tool lead screw bearing block | |
| CN219391166U (en) | Structure for synchronously testing temperature and pressure distribution of battery cell | |
| CN119469725A (en) | Comprehensive test bench and method for hydraulic maintenance tools in power stations | |
| CN111812512B (en) | Work fixture for simulating motor load operation | |
| CN219831252U (en) | Electric brush connection resistance test board | |
| CN114252796B (en) | A battery module low voltage insulation test device | |
| CN217331121U (en) | Strain gauge detection device | |
| CN222671568U (en) | Lithium battery performance test system and nonuniform pressurizing device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |