CN112903164A - 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
- CN112903164A CN112903164A CN202110257885.3A CN202110257885A CN112903164A CN 112903164 A CN112903164 A CN 112903164A CN 202110257885 A CN202110257885 A CN 202110257885A CN 112903164 A CN112903164 A CN 112903164A
- Authority
- CN
- China
- Prior art keywords
- pressure
- internal resistance
- direct contact
- fixed
- piece
- 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.)
- Granted
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
Abstract
A detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line comprises a parallelism adaptive adjustment mechanism, a pressure and internal resistance monitoring system, an elastic deformation measurement 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 surface of the pressure and internal resistance monitoring system; the data processing system is respectively electrically connected with the pressure and internal resistance monitoring system and the elastic deformation measuring system for data transmission; the data processing system is used for the control device to check the internal resistance load pressure and the elastic deformation and process system data; the system also comprises a power supply which supplies power for other systems. The device enriches the types of quality detection devices of all the procedures of the hydrogen fuel cell, and enhances the quality control management and the safe production coefficient of the production process of the hydrogen fuel cell.
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 electrical energy. The basic principle is that the reverse reaction of the electrolytic water, hydrogen and oxygen are respectively supplied to the anode and the cathode, and the hydrogen is diffused outwards through the anode and reacts with the electrolyte, and then electrons are emitted to the cathode through an external load; the hydrogen fuel cell has no pollution to the environment, no noise in the operation of the fuel cell and the generating efficiency of over 50 percent, is more and more popular, has higher and higher use frequency and has wide development prospect. However, the production conditions of the hydrogen fuel cell are very harsh, 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 needs to be controlled, so a professional instrument is needed to perform quality detection in the production process, otherwise, unqualified products are mixed in the production process, the overall performance of the fuel cell is caused, the product quality is influenced, and inestimable safety production accidents are caused seriously. For example, 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, a synchronous full-true simulation test is usually carried out on the pressure load, the elastic deformation and the internal resistance under the working state, and the quality condition of the product in the production link of the process is detected, so that the product is absolutely safe and effective before leaving the factory. However, in the existing laboratory, the detection of various indexes such as a graphite carbon plate, a membrane electrode and the like of the hydrogen fuel cell is separately carried out, some indexes are only limited to simple internal resistance measurement, or simple deformation amount test, or only load-bearing working pressure test, the detection function is single, the working efficiency is low, a plurality of measurement indexes cannot be organically linked together in real time to judge the product quality, and the real working condition of a to-be-detected piece cannot be objectively reflected; and the parallelism adaptability of the detection device is poor, the detection device can only be guaranteed by the machining precision and the assembly tolerance, the assembly requirement on the detection device is high, and the later equipment is difficult to maintain when in failure, so that the measurement precision of the detection device is directly influenced.
Disclosure of Invention
The invention aims at solving the problems that the traditional detection device can not simulate the working state of the hydrogen fuel cell completely and truly, has single detection index and low 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 surface of the pressure and internal resistance monitoring system;
the data processing system is respectively electrically connected with the pressure and internal resistance monitoring system and the elastic deformation measuring system for data transmission; the data processing system is used for the control device to check the internal resistance load pressure and the elastic deformation and process system data;
the system also comprises a power supply which supplies power for other systems.
Furthermore, 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 penetrates through the spring to be sleeved with the spring, 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 move between the bottom plate and the adjusting block in a telescopic mode; wherein N is more than or equal to 3, preferably 4; the spring is specifically a rectangular spring; the fasteners are preferably flange nuts and hexagon socket head bolts;
the pressure and internal resistance monitoring system comprises an insulating cushion block, a first direct contact head, a second direct contact head, a pressure sensor, a high-precision internal resistance tester and an electric energy conducting wire, wherein a space for placing a piece to be tested is formed between the first direct contact head and the second direct contact head, and the high-precision internal resistance tester is respectively connected with the first direct contact head and the second direct contact head through the electric energy conducting wire; the first direct contact is fixed on an insulating cushion block, the insulating cushion block is fixed on an adjusting block, the second direct contact is fixed on one end of a pressure sensor, and the other end of the pressure sensor is fixed on a power output system;
the insulating cushion block is a ceramic cushion block;
the bullet 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 bullet deformation of the piece to be detected 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, then the rotating power 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 linearly relatively;
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 the internal resistance load pressure and the elastic deformation and process system data.
Further, the power conversion transmission assembly comprises a supporting seat, a synchronous belt pulley box body, a first high-torque synchronous wheel, a synchronous toothed belt, a second high-torque synchronous wheel, a flange bearing, a ball screw nut, a cylinder body extension 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 wheel, the first high-torque synchronous wheel and the second high-torque synchronous wheel are connected through the synchronous toothed belt, the second high-torque synchronous wheel is installed at one end of the ball screw, the ball screw sequentially penetrates through the flange bearing, the ball screw nut, the cylinder body extension rod and the linear bearing, the ball screw nut is fixedly connected with the cylinder body extension rod, the ball screw nut and the ball screw are matched and in screw transmission, the ball screw nut drives the cylinder body extension rod to move along the ball screw, 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 located on the output end.
The support frame comprises a workbench surface, two L-shaped vertical plates, a support plate and a T-shaped vertical plate, wherein 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 in the middle of the two L-shaped vertical plates, 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 working table;
the high-precision internal resistance tester of the pressure and internal resistance monitoring system is placed on the working table;
the first straight contact head of the pressure and internal resistance monitoring system is fixed on an insulating cushion block through an inner hexagon bolt, the insulating cushion block is fixed on an adjusting block, and the insulating cushion block is a ceramic cushion block;
a second direct contact of the pressure and internal resistance monitoring system is fixed on one end of a pressure sensor through an insulating shouldered stud, and the other end of the pressure sensor is fixedly connected on an extension rod of the cylinder body through threads;
and an industrial workstation of the data processing system is fixed on the T-shaped vertical plate.
Furthermore, the bullet deformation measuring system is a contact type displacement detection device which is respectively fixed on the first direct contact head and the second direct contact head;
the contact type displacement detection device comprises an insulation connecting block, a buckle sleeve, a contact type displacement sensor and an insulation positioning block, wherein the contact type displacement sensor penetrates through the buckle sleeve and is clamped on the insulation connecting block;
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, is used for controlling the working state of elements, and is connected with a power supply through an electric energy conducting wire.
Further, 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 the piece to be tested into the test software so as to compare the theoretical range values with test data values;
s2, initial calibration stage of the device: the test software touches the PLC controller, the PLC controller controls the alternating current servo motor to start working, the second direct contact is pressed to a set pressure value position, the pressure corresponding to the set pressure value position is larger than the pressure used when the test is to be measured, then the pressure sensor and the contact type displacement sensor start working, the displacement measured at the moment is set as an initial value of the reference through the test software, and is set as an original point O by adopting a compensation mode according to the height of the corresponding piece to be measured, namely the initial value of the displacement and the height of the piece to be measured are set as the original point O; (ii) a
S3, device measurement stage: loading a piece to be detected on a detection table, triggering a PLC (programmable logic controller) by test software to enable an alternating current servo motor to drive a second direct contact to move to the height position of the piece to be detected, wherein the height just contacted with the piece to be detected is an original point O, the pressure is 0N because the piece to be detected just contacted with the piece to be detected, after the contact point position is reached, the second direct contact moves to the position of a pressure value corresponding to the pressure to be detected, then the second direct contact rises to the position of the original point O, and at the moment, a pressure sensor, a contact type displacement sensor and a high-precision internal resistance tester respectively acquire the pressure value, the displacement and the internal resistance value corresponding to the process of pressing from the original point O to the lowest point to returning to the; the industrial workstation is a computer;
s4, device measurement data processing stage: the industrial workstation combines the three on-line monitoring data to perform linkage analysis, when any one of the pressure value, the displacement and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range red, and marks unqualified products, and counts the number of unqualified products, and when the actual value does not exceed the theoretical range value, the computer marks the final qualified products and counts the number of qualified products; the unqualified product is marked as NG; the identification of the qualified product is OK;
s5, device detection completion stage: and moving the position from the original point O to the initial position, wherein the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester do not acquire data any more, and the detection work is finished.
Further, the step S2 of the test software control device checking the internal resistance load pressure and the elastic deformation amount further includes a step
And S21, before the pressure sensor and the contact type displacement sensor start to work, the second direct contact is pressed down to the set pressure value position to lock the self-adaptive parallelism adjusting mechanism.
Further, the step S3 of the test software control device checking the internal resistance load pressure and the elastic deformation amount further includes a step
S31, before the measurement is started, setting the working speed of the alternating current servo motor in the test software, and setting the speed to be fast when the alternating current servo motor descends to an original point O from an initial position in the pressing process; the speed is set to be slow when the pressure is pressed from the origin O to the lowest point and then returns to the origin O.
The device can simulate the working condition of the piece to be tested in a specific working environment, monitor the working condition of the piece to be tested in real time, and carry out parametric management on monitoring data, for example, graphite polar plates and membrane electrodes are sequentially and alternately stacked together to be called a galvanic pile, stacked together and then tightly bound by a binding bundle, and the pressure existing in the graphite polar plates and the membrane electrodes when the graphite polar plates and the membrane electrodes are bound together is also called working pressure or load pressure, and the device simulates the tests of corresponding internal resistance, load pressure and elastic deformation under the working pressure of the graphite polar plates and the membrane electrodes and screens out unqualified products in; the device has parallelism self-adaptability, higher detection precision and convenience for later maintenance; the device has the advantages of flexible structure, safety, practicability and high detection precision, overcomes the defects of low working parallelism, low detection precision, single function and the like of the traditional detection device, fills the gap of instruments for simultaneously detecting graphite polar plates, membrane electrodes and the like in the hydrogen fuel cell market, provides a new idea, a new method and a new approach for detecting the hydrogen fuel cell, and contributes to the development of the actual application technology of the hydrogen fuel cell to the direction of maturity, high efficiency and safety.
In conclusion, the beneficial effects of the invention are as follows:
1. the device adopts an innovative design method combining mechanical motion and automatic control measurement technology, truly simulates the operation condition of the piece to be measured under a specific working environment, parametrizes and manages the piece, such as dynamically monitoring the internal resistance, elastic deformation and working pressure of the piece to be measured in real time, truly reflects the actual parameter level of the piece to be measured, compares the actual detection value with the corresponding theory, can find unqualified products in time, and avoids the unqualified products from flowing into the next process step; meanwhile, the device can monitor three variables of internal resistance, elastic deformation and working pressure of the piece to be detected in a working state at the same time, has complete functions, is different from single variable detection of a traditional detection mode, and greatly improves the working efficiency of the device; thirdly, multivariate simultaneous on-line monitoring is realized, the objective working conditions of the product can be truly reflected, the internal resistance, the elastic deformation and the working pressure of the piece to be measured are internally linked, and the judgment of the quality of the product is meaningful only by combining the internal resistance, the elastic deformation and the working pressure.
2. The device is provided with a parallelism self-adaptive adjusting mechanism, when the parallelism of the upper working table surface and the lower working table surface (referring to the superposition plane of a first direct contact and a second direct contact) of the internal resistance tester is poor in the measuring process of the device, the parallelism of the measuring table surface can be adjusted by the parallelism self-adaptive adjusting mechanism, so that the workpiece to be measured and the measuring table surface are kept parallel, the two end surfaces to be measured of the workpiece to be measured are uniformly attached to the working surface of the internal resistance tester, the actual contact attachment surface of the workpiece to be measured is ensured to be a theoretical test working surface, the accuracy of the detection result is improved, the phenomenon that the internal resistance tester inclines during measurement, the working pressure of the workpiece to be measured is not uniform, and the measurement result is wrong is finally caused because the contact area of the workpiece to be measured is influenced by uneven stress, the contact area influences the measurement, and the translated internal resistance is different, and R is U/A.
3. The elastic deformation measuring system adopts a contact type displacement detecting device, is different from other laser detecting instruments, has higher detection accuracy and is more suitable for detecting the micro elastic deformation of graphite carbon plates, membrane electrodes and the like.
4. The device has safe and reliable measurement results, enriches the types of quality detection devices of all the procedures of the hydrogen fuel cell through development and application of the device, enhances the quality control management and the safe production coefficient of the production process of the hydrogen fuel cell, and is beneficial to promoting the rapid development of the hydrogen fuel cell industry.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a schematic view of a supporting frame;
FIG. 3 is a schematic diagram of a parallelism adaptive adjustment mechanism, a pressure and internal resistance monitoring system;
FIG. 4 is a schematic diagram of a system for measuring deformation of a bullet;
FIG. 5 is a schematic view of an insulated shouldered stud construction;
FIG. 6 is a schematic diagram of a power take-off system configuration;
in the figure: 1-a support frame; 2-parallelism adaptive adjusting mechanism; 3-a pressure and internal resistance monitoring system; 4-a system for measuring deformation of the bullet; 5-a power take-off system; 6-a data processing system; 7-a working table surface; 8-L-shaped vertical plates; 9-a support plate; a 10-T-shaped vertical plate; 11-a base plate; 12-a rectangular spring; 13-an adjustment block; 14-flange nuts; 15-hexagon socket head cap screw; 16-a ceramic pad block; 17-a first direct contact; 18-a second direct contact; 19-a pressure sensor; 20-an alternating current servo motor; 21-a planetary reducer; 22-insulated shouldered studs; 23-a power conducting wire; 24-an insulating connecting block; 25-buckling a sleeve; 26-a contact displacement sensor; 27-a support base; 28-synchronous pulley box; 29-a first high torque synchronizing wheel; 30-synchronous toothed belt; 31-a second high torque synchronizing wheel; 32-flange bearing; 33-ball screw nut; 34-cylinder extension rod; 35-ball screw; 36-electric cylinder block; 37-linear bearings; 38-high precision internal resistance tester; 39-insulating positioning block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1: as shown in fig. 1-6, the parallelism adaptive high-precision internal resistance testing device comprises a support frame, a parallelism adaptive adjusting mechanism, a pressure and internal resistance monitoring system, a spring deformation measuring system, a power output system and a data processing system; the parallelism self-adaptive adjusting mechanism, the power output system and the data processing system are respectively fixed on the support frame, 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 force output system, and the elastic deformation measuring system is arranged on the side surface of the pressure and internal resistance monitoring system;
the support frame 1 comprises a workbench surface 7, two L-shaped vertical plates 8, a support plate 9 and a T-shaped vertical plate 10, wherein one ends of the two L-shaped vertical plates 8 are fixed on the workbench surface 7, the other ends of the two L-shaped vertical plates are fixed on the support plate 9, the support plate is positioned in the middle of the two L-shaped vertical plates 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, four fasteners comprising four flange nuts 14 and four inner hexagonal cylindrical head bolts 15, wherein the bottom plate 11 is fixed on a working table surface 7 by screws, one end of each inner hexagonal cylindrical head bolt 15 is fastened on the bottom plate 11 through threaded connection, the other end of each inner hexagonal cylindrical head bolt passes through the four rectangular springs 12, the adjusting block 13 and the four flange nuts 14 and is sleeved on the four inner hexagonal cylindrical head bolts 15 in sequence, the four flange nuts 14 play a locking role, wherein 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 head bolts 15, and the rectangular springs 12 can move up and down along the inner hexagonal cylindrical head bolts 15 along with the tightness of screwing of the flange nuts, namely, the rectangular spring 12 can move telescopically 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 head 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 placed on the working table surface 7 and is respectively connected with the first straight contact head 17 and the second direct contact 18 through the electric energy conducting wire 23, the first straight contact head 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 on the cylinder body extension bar 34 through threads; a space for placing the piece to be tested is arranged between the first direct contact head 17 and the second direct contact head 18;
the elastic deformation measuring system 4 is respectively arranged at one side of the first direct contact head 17 and one side of the second direct contact head 18, and the elastic deformation of the piece to be detected is detected through the first direct contact head 17 and the second direct contact head 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 rotary power, the rotary power is reduced through the planetary reducer 21, then the rotary power is converted into linear motion power through the power conversion transmission assembly, and the first direct contact head 17 and the second direct contact head are driven to move linearly relatively;
specifically, the power output system 5 comprises an alternating current servo motor 20, a planetary reducer 21, a power conversion transmission assembly comprising a supporting seat 27, a synchronous pulley box 28, a first high-torque synchronous wheel 29, a synchronous toothed belt 30, a second high-torque synchronous wheel 31, a flange bearing 32, a ball screw nut 33, a cylinder extension rod 34, a ball screw 35, an electric cylinder 36 and a linear bearing 37, 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 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 wheel 29, the first high-torque synchronous wheel 29 and the second high-torque synchronous wheel 31 are connected through the synchronous toothed belt 30, the second high-torque synchronous wheel 31 is installed at 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 extension rod 34 and the, the ball screw nut 33 is fixedly connected with the cylinder body extension rod 34, the ball screw nut 33 is matched with the ball screw 35 for screw transmission, the ball screw nut 33 drives the cylinder body extension rod 34 to move along the ball screw 35, the synchronous pulley box body 28 is fixed on one side of the supporting seat 27, the electric cylinder body 36 is fixed on the other side of the supporting seat 27, the flange bearing 32 is fixed on the supporting seat 27, and the linear bearing 37 is fixed in the electric cylinder body 36 and is positioned on the output end;
the industrial workstation of the data processing system 6 is fixed on the T-shaped vertical plate 10 and comprises the industrial workstation and test software, and the test software is installed on an industrial computer and used for controlling the device to check the internal resistance load pressure and the elastic deformation and process system data.
Example 2: the structure of the device of the embodiment is the same as that of 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 insulation connecting block 24, a buckle sleeve 25, a contact type displacement sensor 26 and an insulation positioning block 39, wherein the contact type displacement sensor 26 penetrates through the buckle sleeve 25 and is clamped on the insulation connecting block 24, the insulation connecting block 24 is fixed on the second direct contact 18, and the insulation positioning block 39 is fixed on the first direct contact 17;
the detecting device of the present embodiment is different from embodiment 1 in that: the industrial workstation is respectively connected with the PLC, the alternating current servo motor, the high-precision internal resistance tester and the pressure sensor, is used for controlling the working state of elements, and is connected with a power supply through an electric energy conducting wire.
The difference from example 1 is also that: the data processing system 6 comprises an industrial workstation and test software, an 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 by the test software control device comprises the following steps:
s1, writing theoretical range values of internal resistance, load pressure and elastic deformation of the piece to be tested into the test software so as to compare the theoretical range values with test data values;
s11, device starting stage: turning on a power switch, starting the device of the invention, and enabling the industrial computer, the PLC, the pressure sensor 19, the contact type displacement sensor 26 and the high-precision internal resistance tester 21 to enter a power-on state;
s2, initial calibration stage of the device: starting an industrial computer, running test software, triggering a PLC controller, controlling an alternating current servo motor 20 to start working by the PLC controller to enable a second direct contact 18 to be pressed down to a set pressure value position, wherein the position is a position for adjusting the locking of a parallelism self-adaptive adjusting mechanism, the contact surfaces of a first direct contact and a second direct contact are two surfaces with high adjusted parallelism, the pressure corresponding to the position of the set pressure value is greater than the pressure used when the test is to be measured, namely the measurement pressure of a to-be-measured piece, then starting working by a pressure sensor 19 and a contact type displacement sensor 26, setting the displacement measured at the moment as an initial value of reference through the test software, setting the initial value O by adopting a compensation mode according to the height of the corresponding to-be-measured piece, namely setting the initial value of the displacement and the height value of the to-be-measured piece as the initial point O by adding the height value of the to, thus, the position where the second direct contact just contacts the piece to be tested is the original point 0;
the step S2 further includes
And S21, before the pressure sensor 19 and the contact type displacement sensor 26 start to work, the second direct contact 18 is pressed down to the set pressure value position as a reference to lock the self-adaptive parallelism adjusting mechanism 2.
S3, device measurement stage: loading a to-be-detected piece on a detection table, triggering a PLC (programmable logic controller) by test software to enable an alternating current servo motor 20 to drive a second direct contact 18 to move to the height position of the to-be-detected piece, wherein the height just contacted with the to-be-detected piece is an original point O, the pressure is 0N because just contacted with the to-be-detected piece, after the contact point position is reached, the second direct contact 18 moves to the position of a pressure value corresponding to the to-be-detected pressure, the to-be-detected pressure is a force which is definitely given, the to-be-detected piece is applied to the pressure with a certain magnitude, the force is applied from 0 to the given magnitude, and the; then, the pressure sensor 19, the contact type displacement sensor 26 and the high-precision internal resistance tester 21 respectively acquire a pressure value, a displacement and an internal resistance value corresponding to the process from the initial point O to the lowest point to the initial point O, the position of the maximum elastic deformation amount corresponding to the maximum pressure applied by the piece to be tested is taken as the lowest point, and real-time monitoring data are sent to an industrial workstation, namely a computer;
the step S3 further includes
S31, before the detection starts, setting the working speed of the AC servo motor 20 in the test software, and setting the speed to be fast when the AC servo motor descends to an origin O from an initial position in the pressing process; the speed is set to be slow when the pressure is pressed from the origin O to the lowest point and then returns to the origin O.
S4, device measurement data processing stage: the industrial workstation computer combines the three on-line monitoring data to perform linkage analysis, when any one of the pressure value, the displacement and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range red, makes an unqualified NG mark and counts the number of unqualified NG products, and when the actual value 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: and moving the position from the original point O to the initial position, wherein the pressure sensor 19, the contact displacement sensor 26 and the high-precision internal resistance tester 21 do not collect data any more, and the detection work is finished. Specifically from high-efficient the consideration, examine each piece that awaits measuring and only need follow origin O position short-term motion to take certain height H1, wait that all pieces that await measuring accomplish to detect, follow origin O position short-term motion to initial position H2, H1< H2, save distance promptly save time, improved efficiency.
The using method of the device comprises the following steps:
when the device is used for the first time, the device is operated in an idle mode to adjust the parallelism adaptive adjusting mechanism 2 to a required position, namely the parallelism of the detection workbench surface is corrected, 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 to the piece to be detected, when the power output system 5 and the piece to be detected start to touch, the piece to be detected and the pressure and internal resistance monitoring system 3 form a closed loop, 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 a detection result and judges the quality condition of a product.
Specifically, in an initial state, a certain distance is kept between the first direct contact head 17 and the second direct contact head 18, test software on an industrial workstation is started to trigger a PLC controller, so that the ac servo motor 20 starts to operate, the ac servo motor 20 drives the planetary reducer 21 to drive the first high-torque synchronizing wheel 29 to drive the second high-torque synchronizing wheel 31 to rotate through the synchronous toothed belt 30, the second high-torque synchronizing wheel 31 drives the ball screw 35 to rotate so that the ball screw nut 33 moves along the ball screw 35, the cylinder extension bar 34 moves along with the movement of the ball screw nut 33, the cylinder extension bar 34 drives the pressure sensor 19, the second direct contact head 18 and the contact displacement sensor 26 to move close to the first direct contact head 17, and the second direct contact head 18 starts to contact with the first direct contact head 17 and slowly compresses the first direct contact head 17. The first straight contact head 17 compresses the rectangular spring 12 to move downwards through the ceramic cushion block 16 and the adjusting block 13 respectively in the process that the first straight contact head 17 is compressed by the second direct contact 18, the downward movement is stopped until a preset pressure value is reached, at the moment, the contact surfaces of the first straight contact head 17 and the second direct contact 18 are parallel surfaces, the flange nut 14 is locked by the force with the same force, 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 head and the second direct contact are two surfaces with high parallelism after adjustment; the reset button is then activated to start the ac servo motor 20 to reverse direction to restore the apparatus to the initial state. The preset pressure value is a manually set compression locking force, and the preset pressure requirement is greater than the down 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 the maximum value and the maximum value is larger than the force to be measured on the to-be-measured part; the force setting principle of the to-be-measured part measurement is that the spring and the to-be-measured part can bear, and the locking force is smaller than the locking force of the parallelism self-adaptive adjusting mechanism.
Similarly, when the device is used for measurement, a to-be-measured piece is placed on the first direct contact head 17 and is positioned between the first direct contact head 17 and the second direct contact head 18, the detection device is started, like the running condition in no-load, the second direct contact head 18 starts to contact the to-be-measured piece and slowly compresses the to-be-measured piece to a required pressure value to be measured, 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 a reference theoretical value, and when the recorded actual measured value exceeds the range of the theoretical value, the data processing system 6 identifies an abnormal value and prompts an NG interface. Specifically, the piece to be tested is clamped between a first direct contact head 17 and a second direct contact head 18, and when the first direct contact head 17 and the second direct contact head 18 are electrified, a loop is formed with the piece to be tested and is in a discharge working state; the graphite electrode plates and the membrane electrode are sequentially stacked together in a crossed mode, then are bundled and bound tightly to form an electric pile, the pressure existing in the graphite electrode plates and the membrane electrode when the graphite electrode plates and the membrane electrode are bundled together is also called working pressure, and the device simulates the working pressure of the graphite electrode plates and the membrane electrode to detect.
When all tests are completed, the second direct contact 18 starts to rise upwards, away from the piece to be detected to the initial position, thus completing a detection task.
The working pressure of the hydrogen fuel cell refers to the working pressure of internal components such as a graphite carbon plate, a membrane electrode electric pile and the like when the hydrogen fuel cell works; the detection device working pressure refers to the pressure born by the device simulation galvanic pile in a working state; the hydrogen fuel cell working pressure and the detection device working pressure refer to the actual working pressure of the hydrogen fuel cell stack, and the other quantity is the quantity when the working pressure of the hydrogen fuel cell stack to be detected is simulated.
Claims (10)
1. A detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line is characterized by comprising a parallelism adaptive adjustment mechanism, a pressure and internal resistance monitoring system, an elastic deformation measurement 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 surface of the pressure and internal resistance monitoring system;
the data processing system is respectively electrically connected with the pressure and internal resistance monitoring system and the elastic deformation measuring system for data transmission; the data processing system is used for the control device to check the internal resistance load pressure and the elastic deformation and process system data;
the system also comprises a power supply which supplies power for other systems.
2. The device of claim 1, wherein the parallelism adaptive adjustment mechanism comprises a base plate, N springs, an adjustment block, and N fasteners, wherein the base plate is fixed, one end of each fastener is fixedly connected to the base plate, the other end of each fastener penetrates through the spring and the spring, and then penetrates through the adjustment block and the adjustment block to be locked together, the springs are in clearance fit with the fasteners, and the springs can move telescopically between the base plate and the adjustment block;
the pressure and internal resistance monitoring system comprises an insulating cushion block, a first direct contact head, a second direct contact head, a pressure sensor, a high-precision internal resistance tester and an electric energy conducting wire, wherein a space for placing a piece to be tested is formed between the first direct contact head and the second direct contact head, and the high-precision internal resistance tester is respectively connected with the first direct contact head and the second direct contact head through the electric energy conducting wire; the first direct contact is fixed on an insulating cushion block, the insulating cushion block is fixed on an adjusting block, the second direct contact is fixed on one end of a pressure sensor, and the other end of the pressure sensor is fixed on a power output system;
the bullet 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 bullet deformation of the piece to be detected 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, then the rotating power 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 linearly relatively;
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 the internal resistance load pressure and the elastic deformation and process system data.
3. The device of claim 2, wherein the power conversion transmission assembly comprises a support base, a synchronous pulley box, a first high-torque synchronous wheel, a synchronous cog belt, a second high-torque synchronous wheel, a flange bearing, a ball screw nut, a cylinder extension bar, a ball screw, an electric cylinder body and a linear bearing, the planetary reducer is fixed on one side of the support base, the output end of the planetary reducer is in transmission connection with the first high-torque synchronous wheel, the first high-torque synchronous wheel and the second high-torque synchronous wheel are connected through the synchronous cog belt, the second high-torque synchronous wheel is installed at one end of the ball screw, the ball screw sequentially passes through the flange bearing, the ball screw nut, the cylinder extension bar and the linear bearing, the ball screw nut is fixedly connected with the cylinder extension bar, the ball screw nut and the ball screw are matched for screw transmission, the ball screw nut drives the cylinder extension bar to move along the ball screw, the synchronous belt 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 located on the output end.
4. The device of claim 3, further comprising a support frame, wherein 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 located in the middle of the two L-shaped vertical plates, 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 working table;
the high-precision internal resistance tester of the pressure and internal resistance monitoring system is placed on the working table;
the first straight contact head 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;
a second direct contact of the pressure and internal resistance monitoring system is fixed on one end of a pressure sensor through a double-ended stud with a shoulder, and the other end of the pressure sensor is fixedly connected on an extension rod of the cylinder body through threads;
and an industrial workstation of the data processing system is fixed on the T-shaped vertical plate.
5. The apparatus of claim 4, wherein the system for measuring the deformation of the bullet is a contact type displacement detecting device, and the contact type displacement detecting device is fixed on the first direct contact head and the second direct contact head respectively;
the contact type displacement detection device comprises an insulation connecting block, a buckle sleeve, a contact type displacement sensor and an insulation positioning block, wherein the contact type displacement sensor penetrates through the buckle sleeve and is clamped on the insulation connecting block;
6. the device according to any one of claims 2-5, further comprising a PLC controller, wherein the PLC controller is connected with the AC servo motor for controlling the switch, and the industrial workstation is respectively connected with the PLC controller, the AC servo motor, the high-precision internal resistance tester and the pressure sensor for controlling the working state of the element, and is connected with the power supply through the power conducting wire.
7. The apparatus according to claim 2, 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 the piece to be tested into the test software so as to compare the theoretical range values with test data values;
s2, initial calibration stage of the device: the test software touches the PLC controller, the PLC controller controls the AC servo motor to start working, so that the second direct contact is pressed to a set pressure value position, the pressure (corresponding to) of the set pressure value position is greater than the pressure used when the pressure is to be measured, then the pressure sensor and the contact type displacement sensor start working, the displacement measured at the moment is set as a reference initial value through the test software, and is set as an original point O by adopting a compensation mode according to the height of a corresponding piece to be measured, namely the original point O is set by adding the displacement initial value and the height of the piece to be measured;
s3, device measurement stage: loading a piece to be detected on a detection table, triggering a PLC (programmable logic controller) by test software to enable an alternating current servo motor to drive a second direct contact to move to the height position of the piece to be detected, wherein the height just contacted with the piece to be detected is an original point O, the pressure is 0N because the piece to be detected just contacted with the piece to be detected, after the contact point position is reached, the second direct contact moves to the position of a pressure value (corresponding to the pressure) to be detected, then the second direct contact rises to the position of the original point O, and at the moment, a pressure sensor, a contact type 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 pressing of the original point O to the lowest point to the returning;
s4, device measurement data processing stage: the industrial workstation combines the three on-line monitoring data to perform linkage analysis, when any one of the pressure value, the displacement and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range red, and marks unqualified products, and counts the number of unqualified products, and when the actual value does not exceed the theoretical range value, the computer marks the final qualified products and counts the number of qualified products;
s5, device detection completion stage: and moving the position from the original point O to the initial position, wherein the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester do not acquire data any more, and the detection work is finished.
8. The apparatus according to claim 6, 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 the piece to be tested into the test software so as to compare the theoretical range values with test data values;
s2, initial calibration stage of the device: the test software touches the PLC controller, the PLC controller controls the alternating current servo motor to start working, so that the second direct contact is pressed to a set pressure value position, the pressure at the set pressure value position (corresponding) is greater than the pressure used when the pressure is to be measured, then the pressure sensor and the contact type displacement sensor start working, the displacement measured at the moment is set as a reference initial value through the test software, and is set as an original point O by adopting a compensation mode according to the height of a corresponding piece to be measured, namely the original point O is set by adding the displacement initial value and the height of the piece to be measured; (ii) a
S3, device measurement stage: loading a piece to be detected on a detection table, triggering a PLC (programmable logic controller) by test software to enable an alternating current servo motor to drive a second direct contact to move to the height position of the piece to be detected, wherein the height just contacted with the piece to be detected is an original point O, the pressure is 0N because the piece to be detected just contacted with the piece to be detected, after the contact point position is reached, the second direct contact moves to the position of a pressure value (corresponding to the pressure) to be detected, then the second direct contact rises to the position of the original point O, and at the moment, a pressure sensor, a contact type 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 pressing of the original point O to the lowest point to the returning;
s4, device measurement data processing stage: the industrial workstation combines the three on-line monitoring data to perform linkage analysis, when any one of the pressure value, the displacement and the internal resistance value exceeds a theoretical range value, the computer marks the actual value exceeding the range red, and marks unqualified products, and counts the number of unqualified products, and when the actual value does not exceed the theoretical range value, the computer marks the final qualified products and counts the number of qualified products;
s5, device detection completion stage: and moving the position from the original point O to the initial position, wherein the pressure sensor, the contact displacement sensor and the high-precision internal resistance tester do not acquire data any more, and the detection work is finished.
9. The apparatus according to claim 7 or 8, wherein the step S2 of the test software control device checking the internal resistance load pressure and the elastic deformation amount further comprises the step of
And S21, before the pressure sensor and the contact type displacement sensor start to work, the second direct contact is pressed down to the set pressure value position to lock the self-adaptive parallelism adjusting mechanism.
10. The apparatus according to claim 7 or 8, wherein the step S3 of the test software control device checking the internal resistance load pressure and the elastic deformation amount further comprises the step of
S31, before the detection starts, setting the working speed of the alternating current servo motor in the test software, and setting the speed to be fast when the alternating current servo motor descends to an original point O from an initial position in the pressing process; the speed is set to be slow when the pressure is pressed from the origin O to the lowest point and then returns to the origin 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 true CN112903164A (en) | 2021-06-04 |
| CN112903164B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654520A (en) * | 2021-06-30 | 2021-11-16 | 江苏南水科技有限公司 | Intelligent inclinometry method with in-situ self-calibration function |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0799734A (en) * | 1993-09-27 | 1995-04-11 | Fujitsu Ltd | Circuit for monitoring residual capacity 0f battery |
| JP2002529690A (en) * | 1998-11-04 | 2002-09-10 | アイ．イー．イー．インターナショナル エレクトロニクス アンド エンジニアリング エス．エイ アール．エル． | Occupant 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 |
| 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 |
| 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 |
| 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 |
| CN210222219U (en) * | 2019-05-10 | 2020-03-31 | 武汉交通职业学院 | Internal resistance detection device for power battery module |
| 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 |
| 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 |
| 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 |
| CN111812537A (en) * | 2020-05-29 | 2020-10-23 | 厦门领航互联信息技术有限公司 | Online real-time monitoring system for internal resistance of storage battery |
| US20200379049A1 (en) * | 2019-05-31 | 2020-12-03 | Sigmasense, Llc. | Battery monitoring and characterization during charging |
-
2021
- 2021-03-09 CN CN202110257885.3A patent/CN112903164B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0799734A (en) * | 1993-09-27 | 1995-04-11 | Fujitsu Ltd | Circuit for monitoring residual capacity 0f battery |
| JP2002529690A (en) * | 1998-11-04 | 2002-09-10 | アイ．イー．イー．インターナショナル エレクトロニクス アンド エンジニアリング エス．エイ アール．エル． | Occupant 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 |
| 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 |
| CN210222219U (en) * | 2019-05-10 | 2020-03-31 | 武汉交通职业学院 | Internal resistance detection device for power battery module |
| US20200379049A1 (en) * | 2019-05-31 | 2020-12-03 | 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 |
| 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 |
| 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 | Online real-time monitoring system for internal resistance of storage battery |
| 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 (3)
| Title |
|---|
| SEONGYUN PARK 等: "Electrical characteristics analysis of 18650 lithium-ion battery pack with the earthquake vibration condition", 《2020 20TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS (ICCAS)》, pages 360 - 364 * |
| 阮喻等: "PEMFC发电系统稳态电压模型研究", 《电源技术》 * |
| 阮喻等: "PEMFC发电系统稳态电压模型研究", 《电源技术》, no. 05, 20 May 2011 (2011-05-20), pages 520 - 522 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654520A (en) * | 2021-06-30 | 2021-11-16 | 江苏南水科技有限公司 | Intelligent inclinometry method with in-situ self-calibration function |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112903164B (en) | 2023-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108232248B (en) | Fuel cell stack assembly test platform and test method thereof | |
| CN106532156A (en) | Expansion measurement apparatus for power battery | |
| US11307260B2 (en) | Testing system for safe operating window of lithium-ion battery in squeezed state and testing method thereof | |
| CN212206442U (en) | Expansive force testing device | |
| CN112903164B (en) | Detection device for simultaneously monitoring internal resistance load pressure and elastic deformation on line | |
| CN111504800B (en) | Multifunctional micro-sample testing system and method, petrochemical industry and nuclear power equipment | |
| CN211904048U (en) | In-situ cell expansion thickness measuring instrument | |
| CN208323237U (en) | Pressing machine with test function | |
| CN203870221U (en) | DC motor detection bench | |
| CN113281165A (en) | Limit test fixture and method for high-strength steel plate fracture in complex tension-compression path | |
| CN104596695A (en) | Loading device for accurately controlling rivet preload of riveting member | |
| CN113156250B (en) | Finger damage simulation analysis test system considering multi-factor coupling effect and working method thereof | |
| CN113984277A (en) | Automatic detection system for electric torque wrench | |
| CN215220781U (en) | Fuel cell packaging pressure testing device | |
| CN110608834A (en) | Double-shaft prestress applying device capable of avoiding bending stress | |
| CN103424657A (en) | Test table for testing work performances of piezoelectric actuator | |
| CN220853953U (en) | Cylindrical battery expansion force test fixture | |
| CN220575797U (en) | Crystal press-fitting device and crystal processing equipment | |
| CN217331121U (en) | Strain gauge detection device | |
| CN207873376U (en) | A kind of detection bolt screw-in mechanism | |
| CN217112650U (en) | Battery module low-voltage insulation test part | |
| CN204422202U (en) | Automatic catch flywheel shaft is to fatigue tester | |
| CN219831252U (en) | Electric brush connection resistance test board | |
| CN219284852U (en) | Battery pressure detection tool | |
| CN216802649U (en) | Load testing device for numerical control machine tool lead screw bearing block |
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 |