CN214503840U - Lithium battery performance test system - Google Patents
Lithium battery performance test system Download PDFInfo
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- CN214503840U CN214503840U CN202023182210.7U CN202023182210U CN214503840U CN 214503840 U CN214503840 U CN 214503840U CN 202023182210 U CN202023182210 U CN 202023182210U CN 214503840 U CN214503840 U CN 214503840U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a lithium battery performance test system, which comprises a test bottom plate, a test probe and a thickness measuring bracket; the front end of the top of the test bottom plate is provided with a thickness measuring bracket; the top of the thickness measuring bracket is provided with a laser thickness measuring sensor; the right end of the top of the test bottom plate is provided with a test probe bracket; the front end and the rear end of the test probe support are respectively provided with a test meter pen which is a positive test meter pen and a negative test meter pen; the left ends of the two test meter pens are used for contacting a positive pole and a negative pole of the battery; the right ends of the two test meter pens are connected with the detection end of the open-circuit voltage and battery internal resistance test equipment; two test probes are arranged on the left side of the test probe bracket; the left ends of the two test probes are respectively contacted with the cathode pole of the battery and the surface of the cover plate of the battery; the right ends of the two test probes are connected with the detection end of the battery shell voltage test equipment. The utility model discloses can accomplish battery open circuit voltage, internal resistance, shell simultaneously and press and thickness test, show and improve efficiency of software testing.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a lithium cell capability test system.
Background
With the increasing maturity and perfection of electric automobile technology, hybrid electric vehicles and electric automobiles have entered the daily lives of people, audiences and people are increasing, and the lithium ion power battery is used as an important component of an electric automobile, and the performance of the lithium ion power battery directly influences the normal use of the electric automobile.
In the process of popularization of electric automobiles, higher requirements are continuously provided for vehicle-mounted high-capacity power batteries, the performance of the vehicle-mounted high-capacity power batteries directly influences the overall performance of the electric automobiles, and batteries with higher safety, more excellent electrical properties and lighter weight need to be continuously developed.
Based on the rapid development of the lithium battery industry, the development and production period of batteries with high capacity and new models is shorter and shorter, and for the production line of small-batch experiments, production and frequent switching of battery models, in the later battery sorting test link, if full-automatic test sorting equipment is purchased, the purchase period is long, the economic investment is large, manual testing is often selected to be more economic, but the existing manual testing and data integration work is complex in operation and often has higher labor cost.
It should be noted that, the battery screening is mainly to classify and select the battery performance through simple performance testing, generally speaking, mass production batteries need to use automated testing and sorting equipment in the sorting testing link in the later stage of manufacturing, and the testing items include: positive and negative electrode voltages (open circuit voltage), battery internal resistance, case voltage, battery thickness;
the open-circuit voltage is the potential difference between the electrodes when the battery is not connected with an external circuit and is equal to the difference between the positive electrode potential and the negative electrode potential. The charge retention capacity of the battery is tested by testing the voltage after the battery is kept still for a period of time, namely, the voltage dispersion point and the K value are utilized. The method selects the battery with self-discharge defects, and the abnormal attenuation of the battery voltage is mainly influenced by factors such as the manufacturing process, materials, storage conditions and the like of the lithium battery, so the open-circuit voltage of the battery is an important parameter for measuring the performance of the battery. The battery with the abnormal voltage attenuation not only leads to the reduction of the capacity of the battery, once the battery is assembled into a module, after each charge and discharge, the self-discharge monomer can reach the cut-off voltage earlier than other monomers due to the problem of large differential pressure at the charge and discharge tail ends, so that the whole module cannot reach the tail end voltage required by design during the charge and discharge, the capacity and the energy of the module are limited, and the use requirement cannot be met. Along with the increase of the number of times of charging and discharging, the deterioration degree of the battery can be further aggravated, the cycle life of the whole module and even the system is influenced, the battery can be possibly out of control due to serious self-discharge, and therefore the safety problem of parking the electric automobile is caused.
The internal battery group is the resistance to the current flowing through the battery when the battery is in operation, and is generally divided into alternating current internal resistance and direct current internal resistance, and because the internal resistance of the rechargeable battery is very small, the electrode is easy to generate polarization internal resistance when the direct current internal resistance is measured, that is, the internal resistance of the battery comprises ohmic resistance (R omega) and polarization resistance (Rf) of the electrode during electrochemical reaction. Therefore, the result of the direct current test is not the true value of the internal resistance of the battery; the AC internal resistance can be measured to avoid the influence of polarization internal resistance and obtain the real internal group value. The increase of the internal resistance of lithium ions is accompanied by safety problems such as energy density reduction, voltage and power reduction, battery heat generation and other failures, so the internal resistance test is often used as an index for battery performance detection, life evaluation and state of health (SOH).
The battery case voltage is the voltage difference between the battery pole and the case (the pole is not connected with the case, including the positive case voltage and the negative case voltage, and the sum of the two is the open-circuit voltage of the battery, therefore, when the open-circuit voltage of the battery is known, the voltage of the battery case can be judged only by testing one pole case voltage): lithium ion battery with metal casing has good heat dissipation, advantages such as mechanical strength height, and the shell is not electrified battery and uses the sealing washer of polytetrafluoroethylene material to separate utmost point post and apron contact usually, and the security is higher, probably leads to the unusual reason of shell pressure: firstly, the battery cover is abnormal in material supply caused by the defects of overlapping of residual aluminum wires or PFA (sealing ring) in cover plate punching, and secondly, the manufacturing process is abnormal, so that solid welding slag is remained in the PFA melting or welding process; the direct contact between the positive and negative poles of the battery and the metal shell/cover plate or the deterioration of the insulation property of PFA (fluorinated ethylene fluoro-alkoxy) causes the shell voltage to be low, so that lithium ions are preferentially embedded into the aluminum shell through electrolyte in the charging and discharging processes to generate a lithium-embedded compound. If the voltage of the shell is low and lasts for a period of time, the battery can be corroded and even leaked, the sealing performance of the battery is influenced, and the normal and safe use of the battery is influenced. When the capacity of the battery is high and the internal pressure is relatively high, the battery is easy to leak liquid or gas after being assembled, great potential safety hazards are caused to the battery, meanwhile, the service life of the battery is shortened due to volatilization of the electro-hydraulic fluid or overhigh moisture, the internal resistance is increased, various parameter performances of the battery are affected, and finally the battery cannot be used continuously.
The thickness of the battery is an index with higher consistency requirement on PACK assembly. The size of the module assembly, the installation of the bracket and the bus bar, the assembly welding position and the like are influenced, and the method is one of important indexes of the assembly; meanwhile, the thickness of the battery is abnormal, and internal defects of the battery, such as battery wrinkles, dead zones or lithium precipitation, can be intuitively reflected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lithium cell capability test system to the technical defect that prior art exists.
Therefore, the utility model provides a lithium battery performance test system, which comprises a battery test carrier;
the battery test carrier comprises a test bottom plate, a test probe and a thickness measuring bracket;
the front end of the top of the testing bottom plate is provided with a thickness measuring bracket;
the top of the thickness measuring bracket is provided with a laser thickness measuring sensor;
the right end of the top of the test bottom plate is provided with a test probe bracket;
the front end and the rear end of the test probe support are respectively provided with a test meter pen mounting groove which is transversely penetrated;
each test meter pen mounting groove is internally provided with a test meter pen;
for two test meter pens, one test meter pen is a positive test meter pen, and the other test meter pen is a negative test meter pen;
the left end of the positive test meter pen is used for contacting a positive pole column of the battery to be tested;
the left end of the negative electrode test meter pen is used for contacting a negative electrode pole of the battery;
the right ends of the two test meter pens are correspondingly connected with detection ends on the open-circuit voltage and battery internal resistance test equipment;
the left side of the test probe bracket is provided with a plurality of test probe mounting holes which are distributed transversely;
wherein, in the two test probe mounting holes, one test probe can be selectively and respectively mounted;
the left ends of the two test probes are respectively contacted with the cathode pole of the battery and the surface of the cover plate of the battery;
the right ends of the two test probes are connected with the detection end of the battery shell voltage test equipment.
Preferably, the thickness measuring support is zigzag in shape.
Preferably, the thickness measuring stand comprises a top plate and a bottom plate;
the front end of the top flat plate is connected with the rear end of the bottom flat plate through a vertical plate.
Preferably, a laser thickness measuring sensor is arranged on the top flat plate;
and the laser thickness measuring sensor is used for measuring the thickness of the battery placed right below the laser thickness measuring sensor.
Preferably, a pushing cylinder is arranged at the left end of the top of the testing bottom plate;
the pushing plate is connected with the power output end on the right side of the pushing cylinder and is positioned on the right left side of the test probe support;
the battery to be tested is placed in a position between the pushing cylinder and the test probe holder.
By above the utility model provides a technical scheme is visible, compares with prior art, the utility model provides a lithium cell capability test system, its design science, but wide application in battery development stage test or small batch volume battery shipment test can accomplish battery open circuit voltage, internal resistance, shell and press and thickness test, is showing the efficiency of software testing to the battery that improves, reduces test cost, has great practical meaning.
Furthermore, the utility model discloses can also carry out data collection and mathematical theory automatically, have that the flexibility is high, development cycle is short, the input cost is low, test efficient characteristics.
Drawings
Fig. 1 is a schematic diagram of a testing principle of four terminal pairs of a daily BT4560 battery impedance tester as an open-circuit voltage and battery internal resistance testing device in a lithium battery performance testing system provided by the present invention;
fig. 2 is a schematic top view of an integrated testing tool as a battery testing carrier in a lithium battery performance testing system provided by the present invention;
fig. 3 is a schematic structural diagram of a test probe holder and a test probe in an integrated test fixture as a battery test carrier in a lithium battery performance test system provided by the present invention;
fig. 4 is the utility model provides an among the lithium battery capability test system, as the structural schematic diagram of the thickness measuring support among the integrated test fixture of battery test carrier.
Detailed Description
In order to make the technical means of the present invention easier to understand, the present application will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In addition, it should be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the term "mounted" and the like should be interpreted broadly, and may be, for example, either fixedly mounted or detachably mounted.
The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
Referring to fig. 1 to 4, the present invention provides a lithium battery performance testing system, which includes a battery testing carrier;
the battery test carrier comprises a test base plate 1, a test probe and a thickness measuring bracket 3;
the thickness measuring bracket 3 is arranged at the front end of the top of the testing bottom plate 1;
the top of the thickness measuring bracket 3 is provided with a laser thickness measuring sensor;
the right end of the top of the test bottom plate 1 is provided with a test probe bracket 20;
wherein, the front and rear ends of the test probe holder 20 are respectively provided with a test meter pen mounting groove 200 (i.e. a square hole groove) which is transversely penetrated;
each test meter pen mounting groove 200 is provided with one test meter pen 5;
for two test meter pens 5, one of them is a positive test meter pen, and the other is a negative test meter pen;
the left end of the positive electrode test meter pen is used for contacting a positive electrode pole of a battery (particularly a lithium battery) to be tested;
the left end of the negative test meter pen is used for contacting a negative pole post of a battery (particularly a lithium battery);
the right ends of the two test meter pens 5 are correspondingly connected with detection ends on open-circuit voltage and battery internal resistance test equipment (particularly adopting a daily BT4560 voltage internal resistance tester);
it should be noted that, to the utility model discloses, through open circuit voltage and battery internal resistance test equipment (specifically adopt day position BT4560 voltage internal resistance tester), can detect the open circuit voltage and the battery internal resistance of battery simultaneously.
Wherein, the left side of the test probe bracket 20 is provided with a plurality of test probe mounting holes 2 which are distributed transversely;
wherein, in the two test probe mounting holes 2, one test probe can be selectively and respectively mounted;
the left ends of the two test probes are respectively contacted with the cathode pole of the battery and the surface of the cover plate of the battery;
the right ends of the two test probes are connected with the detection end of a battery case voltage test device (particularly a daily BT3562 battery impedance tester).
It should be noted that, for the present invention, through the battery case voltage testing device (specifically adopting the japanese BT3562 battery impedance tester), the voltage difference between the negative pole column of the battery and the battery case (the battery cover plate is a part of the battery case) can be tested;
it should be noted that, to the utility model discloses, test probe support 20's left side has a plurality of transverse distribution's test probe hole site 2, and the utmost point post and the battery cover plate size and the relative position of the battery that can test as required select wherein two test probe hole sites 2 and install test probe, guarantee to have at least two probes to contact with negative pole post and battery cover plate respectively, for guaranteeing the stability of test, can increase test probe's quantity as required.
The utility model discloses in, concrete realization is last, and thickness measuring support 3's shape is the zigzag.
In the present invention, in particular, the thickness measuring bracket 3 includes a top plate 31 and a bottom plate 32;
the front end of the top plate 31 and the rear end of the bottom plate 32 are connected by a vertical upright 33.
In the concrete implementation, a laser thickness measuring sensor is arranged on the top flat plate 31;
and the laser thickness measuring sensor is used for measuring the thickness of the battery placed right below the laser thickness measuring sensor.
The utility model discloses in, on specifically realizing, open circuit voltage and battery internal resistance test equipment can adopt current equipment, for example can adopt day BT4560 battery impedance tester (be battery voltage internal resistance tester) of putting, can accomplish the open circuit voltage, the test of battery internal resistance of battery simultaneously.
It should be noted that, referring to fig. 1, the japanese BT4560 device measures the internal impedance of the battery by using the ac 4 terminal test method, and the frequency range is 0.1 to 1050HZ, so that the low-frequency test can be realized, and the test result close to the true internal impedance value can be obtained more easily. And meanwhile, the direct-current voltage of the battery is measured, the resolution is 10uV, the test precision reaches 0.0035% rdg +/-5 dgt, and meanwhile, the temperature test which is very important for battery management can be carried out. The accuracy was. + -. 0.5 ℃.
The utility model discloses in, on specifically realizing, battery case voltage test equipment can adopt current equipment, can adopt day to put BT3562 battery impedance tester for example, can accomplish the shell voltage test of battery.
It should be noted that the impedance tester for the daily BT3562 battery has the characteristics of high precision and high stability. The same BT4560 instrument, four-terminal pair test method, signal source for AC 1KHZ, resistance measurement range: 1 mu omega-3 k omega. Voltage measurement range: 100 μ V-60V, precision Range resistance: 0.3% voltage: 0.05 percent. The voltage and the internal resistance of the battery can be tested at the same time, but the internal resistance test cannot eliminate the influence of polarization internal resistance; and meanwhile, the battery cell sorting system is provided with data acquisition software, can realize automatic measurement, and is suitable for battery product sorting and factory inspection.
It should be noted that, for the battery test carrier of the utility model, it is an integrated test tool, and in cooperation with other equipment, it can realize multiple performance tests at the same time; the utility model discloses, can be through the supporting data processing software on open circuit voltage and battery internal resistance test equipment and the battery case voltage test equipment, can realize that many condition data seek, data download, test data integration and management, data upload, functions such as automatic stepping of data.
In the utility model, in the concrete implementation, a pushing cylinder 4 is installed at the left end of the top of the testing bottom plate 1;
the pushing plate connected with the power output end on the right side of the pushing cylinder 4 is positioned on the right left side of the test probe support 20;
a battery to be tested, which is laterally placed at a position between the push cylinder 4 and the test probe holder 20;
the positive pole post and the negative pole post of the battery are positioned on the right side of the battery.
It should be noted that, to the utility model discloses, the lithium cell that needs the test is square lithium cell, and its right flank has a anodal utmost point post and negative pole utmost point post that distributes around. In the concrete implementation, during the test, the testing base plate is laid on the top of the testing base plate 1.
It should be noted that, for the utility model, in the concrete implementation, the battery is placed at the position between the push cylinder 4 and the test probe holder 20, and the push cylinder 4 extrudes to make one end of two test pens 5 (including an anode test pen and a cathode test pen) contact with the anode pole and the cathode pole of the battery respectively, and the other end of the two test pens 5 is connected with the BT4560 voltage internal resistance tester, and the BT4560 voltage internal resistance tester continuously tests for a preset time (for example, 5S), at this time, the voltage and internal resistance test of the battery can be simultaneously performed by the BT4560 voltage internal resistance tester;
for the utility model, 2 test probes are selectively installed to be respectively in surface contact with the cathode pole of the battery and the cover plate of the battery, the other end of each test probe is connected with a daily BT3562 impedance tester, the daily BT3562 impedance tester continuously tests for a preset time (for example, 5S), and the daily BT3562 impedance tester can test the pressure difference between the cathode pole of the battery and the battery shell;
the utility model discloses, laser sensor (laser thickness measurement sensor promptly) on the thickness measurement support tests the distance change, marks the thickness of battery (for example can adopt laser rangefinder sensor to detect, so the thickness of battery equals the test distance when not putting into the battery at first, subtracts the difference of test distance after putting into the battery).
It should be noted that, to the utility model discloses, above open circuit voltage, internal resistance, shell pressure and the thickness test to the battery, these four tests can go on in step, of course, according to user's selection, also can choose to go on.
It should be noted that, to the utility model discloses, laser thickness measurement sensor can also directly adopt current laser thickness measurement sensor finished product equipment. The laser thickness measuring sensor is a sensor which can sense the thickness of a measured object and convert the thickness into a usable output signal (such as an analog current and voltage signal or a digital signal), is a known device, adopts an existing detection installation mode, and is not described herein again.
The utility model discloses, current supporting data processing software through on open circuit voltage and the battery internal resistance test equipment and the battery case voltage test equipment (BT4560 battery voltage internal resistance tester and daily BT3562 battery impedance tester) is integrated data test and data processing's software, and this test software can realize the butt joint with database sorting system, realizes functions such as many condition data seek, data download, test data integration and management, data upload, data are automatic to be graded.
The utility model discloses in, specifically realize, the utility model discloses a test equipment is still including sweeping yard equipment (for example scanning the rifle) for sweep bar code information (for example two-dimensional code information) on the yard battery, obtain the kind information of predetermineeing (for example model, specification, rated voltage etc.) of battery.
The utility model discloses in, on specifically realizing, the utility model discloses a test equipment still includes industrial computer, is connected with open circuit voltage and battery internal resistance test equipment's data output end, battery case voltage test equipment's data output end and the data output end of sweeping a yard equipment respectively for gather the storage and show open circuit voltage and battery internal resistance test equipment, battery case voltage test equipment and sweep the battery data that a yard equipment gathered and obtained.
Based on the above technical scheme can know, the utility model discloses a whole test system contains: the BT4560 voltage internal resistance tester, the daily BT3562 voltage internal resistance tester and the code scanning device are respectively connected with an industrial computer (namely a computer), the 4-terminal test meter pen, the test probe and the laser thickness measuring sensor are all fixed on an integrated test tool (specifically a test bottom plate), and the computer is provided with matched data processing software.
Before the test is started, firstly, opening the hardware equipment, and setting parameters and conditions for the test;
then, opening the existing matched data processing software, logging in and selecting a battery comprehensive test plate through the software, and inputting basic information of the battery, such as the model, the batch and the like according to prompts; checking the required test items and the corresponding test ports, and moving the cursor to the battery number input box after confirming that each test standard in the window is correct, thereby completing the preparation work before the test;
then, the battery pole is horizontally pushed into the test tool towards the direction of the test probe, positioning is carried out by the side edge of the tool, and the pushing cylinder is controlled to be started through a control pedal of the cylinder to position the bottom of the battery;
then, scanning the bar code of the battery by using a scanning gun, simultaneously displaying four test results on a test interface, stepping down a control pedal of the air cylinder, controlling the air cylinder to return, manually taking out the battery, and repeating the above operation to finish the test of all the batteries;
in the testing process, software matched with the BT4560 voltage internal resistance tester and the daily BT3562 voltage internal resistance tester counts the testing quantity and the passing rate in real time, and after the testing is finished, a battery comprehensive testing report can be generated, so that data integration, storage and database uploading are finished and are transmitted to an industrial computer (computer).
It should be noted that the utility model designs an easy and simple to handle and efficient test system to this is the basis, adjusts simple and easy test fixture, can accomplish the test of many sizes polytypic battery and switch. Hardware and software, from designing to processing life cycle can shorten to within 15 days, the remodelling is fast, the input amount of money is lower, area is little, compares with traditional single flowing water test, practices thrift the human cost, can further realize test data automatic integration, can reach not only economy but also accurate data processing effect, and from a long-term perspective, whole battery test system has certain realistic production practice meaning.
It should be noted that, for the utility model, it can be through the supporting software of installation on the industrial computer (host computer), can be in appointed buffer memory region, analyze different communication instructions and data format of each test equipment into the same form, write the operation of database increase, delete, change and check in the database operation class of independently developing, use the unified code to realize the integration and transmission of data; designing and using a test template with the same format as the database to realize the consistency with the transmission format of the database; meanwhile, the labor intensity of personnel is greatly reduced, software can add connected equipment including a laser range finder, a balance, a short-circuit tester and the like in a self-defined manner through setting serial port parameters and a communication protocol, test items are selected and test standards are set when the equipment is used, and a plurality of tests can be completed simultaneously by scanning a code by a battery; the data may be automatically integrated up into the database server. The software can also have the function of automatic sorting.
In addition, after the data such as voltage, internal resistance, thickness, weight of the current battery are obtained through code scanning test, software can automatically divide the battery to a corresponding grade through a set of sorting standard set by user definition, manual judgment and operation are reduced, and fool-proof and mistake-proof effects are achieved.
Finally, the software can also have a big data analysis function, and can automatically generate the test standards of different test items of different battery types by collecting the test data, the test sorting standard, the yield, the defective type and other information of various different items of a large number of batteries, predict and early warn the generation of defective batteries in defective batches, and further improve the delivery efficiency of products.
To sum up, compare with prior art, the utility model provides a pair of lithium cell capability test system, its design science, but wide application in battery development stage test or small batch volume battery shipment test can accomplish battery open circuit voltage, internal resistance, shell simultaneously and press and thickness test, is showing the efficiency of software testing to the battery that improves, reduces test cost, has great practical meaning.
Furthermore, the utility model discloses can also carry out data collection and mathematical theory automatically, have that the flexibility is high, development cycle is short, the input cost is low, test efficient characteristics.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A lithium battery performance test system is characterized by comprising a battery test carrier;
the battery test carrier comprises a test base plate (1), a test probe and a thickness measuring bracket (3);
the front end of the top of the testing bottom plate (1) is provided with a thickness measuring bracket (3);
the top of the thickness measuring bracket (3) is provided with a laser thickness measuring sensor;
the right end of the top of the test bottom plate (1) is provided with a test probe bracket (20);
wherein, the front end and the rear end of the test probe bracket (20) are respectively provided with a test meter pen mounting groove (200) which is transversely penetrated;
each test meter pen mounting groove (200) is internally provided with a test meter pen (5);
for two test meter pens (5), one of the test meter pens is a positive test meter pen, and the other test meter pen is a negative test meter pen;
the left end of the positive test meter pen is used for contacting a positive pole column of the battery to be tested;
the left end of the negative electrode test meter pen is used for contacting a negative electrode pole of the battery;
the right ends of the two test meter pens (5) are correspondingly connected with detection ends on the open-circuit voltage and battery internal resistance test equipment;
wherein, the left side of the test probe bracket (20) is provided with a plurality of test probe mounting holes (2) which are distributed transversely;
wherein, one test probe is selectively and respectively arranged in the two test probe mounting holes (2);
the left ends of the two test probes are respectively contacted with the cathode pole of the battery and the surface of the cover plate of the battery;
the right ends of the two test probes are connected with the detection end of the battery shell voltage test equipment.
2. The lithium battery performance test system of claim 1, characterized in that the thickness measuring support (3) is zigzag shaped.
3. The lithium battery performance test system of claim 1, characterized in that the thickness measuring support (3) comprises a top plate (31) and a bottom plate (32);
the front end of the top flat plate (31) is connected with the rear end of the bottom flat plate (32) through a vertical upright plate (33).
4. The lithium battery performance test system according to claim 3, wherein a laser thickness measuring sensor is mounted on the top plate (31);
and the laser thickness measuring sensor is used for measuring the thickness of the battery placed right below the laser thickness measuring sensor.
5. The lithium battery performance test system according to any one of claims 1 to 4, wherein a push cylinder (4) is installed at the top left end of the test base plate (1);
the pushing plate connected with the power output end on the right side of the pushing cylinder (4) is positioned on the right left side of the test probe support (20);
the battery to be tested is placed in a position between the pushing cylinder (4) and the test probe holder (20).
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| CN202023182210.7U CN214503840U (en) | 2020-12-25 | 2020-12-25 | Lithium battery performance test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790673A (en) * | 2021-11-16 | 2021-12-14 | 江苏时代新能源科技有限公司 | Battery, power utilization device, welding deviation detection device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790673A (en) * | 2021-11-16 | 2021-12-14 | 江苏时代新能源科技有限公司 | Battery, power utilization device, welding deviation detection device and method |
| CN113790673B (en) * | 2021-11-16 | 2022-04-01 | 江苏时代新能源科技有限公司 | Battery, power utilization device, welding deviation detection device and method |
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