CN216771932U - Testing device and system suitable for electrical property of cylindrical battery cell - Google Patents
Testing device and system suitable for electrical property of cylindrical battery cell Download PDFInfo
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- CN216771932U CN216771932U CN202122818973.4U CN202122818973U CN216771932U CN 216771932 U CN216771932 U CN 216771932U CN 202122818973 U CN202122818973 U CN 202122818973U CN 216771932 U CN216771932 U CN 216771932U
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Abstract
The utility model discloses a testing device and a system suitable for the electrical property of a cylindrical battery cell, wherein a first supporting rod and a second supporting rod are arranged in a box body, a positive probe is arranged on the first supporting rod, a negative probe is arranged on the second supporting rod, the battery cell can be placed in the box body, the spacing distance between the positive probe and the negative probe can be adjusted according to the size of the battery cell by an adjusting device, and the battery cell is further fixed, so that the testing and data acquisition are carried out by adopting a four-wire testing method, the interference between voltage signals and current signals can be effectively reduced, and the accuracy of testing data is ensured.
Description
Technical Field
The present invention relates to a testing apparatus and a testing system for electrical properties, and more particularly, to a testing apparatus and a testing system for electrical properties of a cylindrical cell.
Background
The battery cell is used as a main component in the new energy industry and is also a core component related to safety, and a standardized test flow and an accurate electrical performance test method of the battery cell are more and more important. The difference of the electrical performance characteristics of the single battery cell is of great importance to the influence of packaging, determines the performance of the whole package, and is more concerned about the safety of the whole vehicle.
At present, battery electrical performance test fixtures used by various manufacturers are different, the methods for taking and placing the battery core are different, most manufacturers who are charging and discharging equipment fix the fixtures on a test frame, the fixtures are inconvenient to move, the requirements of testing different temperature and humidity environments cannot be met, the design of part of movable charging and discharging fixtures is too simple and crude, the firmness and the safety are not high, the service life of the materials can be repeatedly used, meanwhile, the external environments such as temperature and humidity are easily influenced, and corrosion and the like are easily caused.
The utility model aims to more accurately improve the test process of the electrical property of the battery, is convenient to move, can be used in different external temperature and humidity environments, and has stable performance and high reliability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a testing device suitable for electrical performance of a cylindrical battery cell, wherein a first supporting rod and a second supporting rod are arranged in a box body, a positive probe is arranged on the first supporting rod, a negative probe is arranged on the second supporting rod, the battery cell can be placed in the box body, the spacing distance between the positive probe and the negative probe can be adjusted according to the size of the battery cell by an adjusting device, the battery cell is further fixed, electrical performance testing is carried out, the testing device is convenient to move for testing, and the testing device can be placed in environments with different temperatures and humidity for use, so that the reliability of the testing device is greatly improved.
Another objective of the present invention is to provide a testing system suitable for electrical performance of a cylindrical electrical core, wherein a current sampling positive line, a voltage sampling positive line, a current sampling negative line and a voltage sampling negative line of a charge-discharge system are electrically connected to a lead terminal of a testing device, respectively, so that the electrical core is placed in the testing device for electrical performance testing.
To achieve the above object, the present invention provides a testing apparatus for electrical performance of a cylindrical cell, comprising:
a box body;
the wire terminal is arranged in the box body;
the first supporting rod is arranged inside the box body;
the second supporting rod is arranged in the box body and is opposite to the first supporting rod;
the positive probe is arranged on one side of the first supporting rod;
the negative probe is arranged on one side of the second supporting rod;
the adjusting device comprises a bolt, a spring part and a nut, one end of the bolt penetrates into the box body from one side outside the box body, the spring part is sleeved at one end of the bolt, and the nut is used for adjusting the length of the bolt arranged in the box body so as to increase or reduce a spacing distance between the positive probe and the negative probe;
one side of an electric core abuts against the positive probe or the negative probe, and applies pressure to compress the spring piece so as to increase the spacing distance, the other side of the electric core is placed in the box body and abuts against the positive probe or the negative probe, then the pressure of the spring piece is removed so as to reduce the spacing distance, and the bolt is adjusted by the nut so as to fix the electric core in the box body.
Preferably, the adjusting device is disposed on the other side of the first supporting rod or/and the other side of the second supporting rod.
Preferably, the box comprises a cover body and a hinge member, wherein one side of the cover body is locked with one side of the hinge member, and the other side of the hinge member is locked with the other side of the outer part of the box body.
Preferably, the cover comprises a fastening member and a fastening rod, one side of the fastening member is disposed on the other side of the cover body, the fastening rod is disposed on one side of the outer portion of the box body, and when the cover body is covered on the box body, the fastening member is fastened with the fastening rod, so that the cover body is fixed on the box body.
Preferably, the lead terminal comprises a first connecting end, a second connecting end, a third connecting end, a fourth connecting end, a fifth connecting end and a sixth connecting end, a voltage sampling positive line passes through the first connecting end is arranged in, and is electrically connected with the positive probe, a current sampling positive line passes through the second connecting end is arranged in, and is electrically connected with the positive probe, a voltage sampling negative line passes through the third connecting end is arranged in, and is electrically connected with the negative probe, a current sampling negative line passes through the fourth connecting end is arranged in, and is electrically connected with the negative probe, a first thermocouple sampling line of a data acquisition device passes through the fifth connecting end is arranged in, a second thermocouple sampling line passes through the sixth connecting end is arranged in, and is electrically connected with the first thermocouple sampling line.
Preferably, a first insulating gasket is disposed between one side of the wire terminal and the box body.
Preferably, a second insulating washer is disposed between the positive electrode probe and the first supporting rod.
Preferably, a third insulating washer is disposed between the negative probe and the second support rod.
Preferably, the device comprises a bearing column disposed below the box body.
Preferably, the supporting column includes a first supporting member, a second supporting member, a third supporting member and a fourth supporting member.
Preferably, one side of the first bearing piece is provided with a first threaded hole, one side of the second bearing piece is provided with a second threaded hole, one side of the third bearing piece is provided with a third threaded hole, and one side of the fourth bearing piece is provided with a fourth threaded hole, so that the first bearing piece, the second bearing piece, the third bearing piece and the fourth bearing piece are fixedly locked on a support of a charging and discharging system.
To achieve the above-mentioned another objective, the present invention provides a testing system for electrical performance of a cylindrical cell, comprising:
the charging and discharging system comprises a current sampling positive line, a voltage sampling positive line, a current sampling negative line and a voltage sampling negative line;
the testing device is electrically connected with the charging and discharging system;
the charging and discharging system starts a power supply, so that current is transmitted to the positive probe through the current sampling positive line or voltage through the voltage sampling positive line, current is transmitted to the negative probe through the current sampling negative line or voltage through the voltage sampling negative line, and the current or voltage is transmitted to the battery cell for testing.
Preferably, the testing device further comprises a data acquisition device, wherein the data acquisition device comprises a first thermocouple acquisition line and a second thermocouple acquisition line, the first thermocouple acquisition line and the second thermocouple acquisition line are electrically connected with the testing device, the data acquisition device is powered on, and the first thermocouple acquisition line and the second thermocouple acquisition line are used for acquiring the temperature of the battery core.
The utility model has the advantages that the interior of the box body can be adjusted and fixed according to the size of the battery cell, the operation and the fixation are convenient, and the testing device can be moved at any time, because the testing device is made of stainless steel, the insulating part of the test device adopts a rubber gasket and is made into a box shape, thereby reducing the influence of the fluctuation of the external environment on the tested sample, ensuring the accuracy of the test data, meanwhile, the box-type testing device also effectively prevents the damage of the conditions of fire, explosion and the like to human bodies in the testing process of the samples, greatly improves the reliability, and is not easily influenced by the external environment temperature or humidity, and simultaneously, the testing device is respectively reserved with a voltage and a current lead terminal, so that the testing system can adopt a four-wire testing method to carry out testing and data acquisition, the mutual interference of voltage and current signals can be effectively reduced, and the accuracy of test data is ensured.
Drawings
FIG. 1A is a top view of the interior of a device according to a first embodiment of the present invention;
FIG. 1B is an inside isometric view of the apparatus of the first embodiment of the present invention;
FIG. 1C is an external isometric view of the device of the first embodiment of the present invention;
FIG. 2 is a top view of the interior of a second embodiment of the apparatus of the present invention;
FIG. 3 is a top view of the interior of a third embodiment of the apparatus of the present invention; and
FIG. 4 is a schematic diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned and/or other objects, features, and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below:
referring to fig. 1A, 1B and 1C, there are shown a top view of the inside of the device, an inside of the device, and an outside of the device, according to a first embodiment of the present invention. As shown in the figure, the testing apparatus TD suitable for electrical performance of a cylindrical battery cell of the present invention includes a box body 1, a lead terminal 2, a first support rod 3, a second support rod 4, a positive probe 5, a negative probe 6, and an adjusting apparatus 7, and the connection relationship and the operation mode thereof are described as follows:
in an embodiment, the width of the interior of the case 1 is 90mm-120mm, and the height of the interior of the case 1 is 60mm-90mm, and the case 1 is made of stainless steel, but not limited thereto, further, a support post 11 may be disposed below the case 1, and in an embodiment, the support post 11 includes a first support member 111, a second support member 112, a third support member 113 and a fourth support member 114, and one side of the first support member 111 has a first threaded hole (not shown), one side of the second support member 112 has a second threaded hole (not shown), one side of the third support member 113 has a third threaded hole (not shown), and one side of the fourth support member 114 has a fourth threaded hole (not shown), when the battery cell B needs to be tested, the case can be locked on a support of the charging/discharging system for testing, but not limited thereto, and can be moved to other locations for fixing according to the needs, meanwhile, the box body 1 can be further provided with a through hole 12.
The lead terminal 2 is disposed inside the box body 1, and a first insulating gasket is disposed between one side of the lead terminal 2 and the box body 1, wherein the first insulating gasket is made of rubber, but not limited thereto, in an embodiment, 6 lead terminals 2 are disposed inside the box body 1, but not limited thereto, the number of the lead terminals 2 can be increased or decreased according to the requirement, taking 6 lead terminals 2 as an example, the lead terminal 2 includes a first connection end 21, a second connection end 22, a third connection end 23, a fourth connection end 24, a fifth connection end 25 and a sixth connection end 26, and the voltage sampling positive wire V + is disposed inside the box body 1 from the outside of the box body 1 through the first connection end 21 and is electrically connected to the positive probe 5; the current sampling positive electrode wire I + is placed into the box body 1 from the outside of the box body 1 through the second access end 22 and is electrically connected with the positive electrode probe 5; the voltage sampling negative electrode wire V-is placed into the box body 1 from the outside of the box body 1 through the third access end 23 and is electrically connected with the negative electrode probe 6; the current sampling negative electrode wire I-is placed into the box body 1 from the outside of the box body 1 through the fourth access end 24 and is electrically connected with the negative electrode probe 6;
a first thermocouple sampling line T + of the data acquisition device is arranged in the box body 1 from the outside of the box body 1 or the through hole 12 of the box body through the fifth access end 25, a second thermocouple sampling line T-of the data acquisition device is arranged in the box body 1 from the outside of the box body 1 or the through hole 12 of the box body through the sixth access end 26, the first thermocouple sampling line T + is electrically connected with the second thermocouple sampling line T-, and can be fixed to the temperature sampling position of the tested electric core B by using a high-temperature adhesive tape or thermocouple glue, but the limit is not limited.
In an embodiment, the first supporting rod 3 has a first abutting member 31, a first corner post 32 and a second corner post 33, one end of the first corner post 32 is connected to one end of the first abutting member 31, one end of the second corner post 33 is connected to the other end of the first abutting member 31, and the other end of the first corner post 32 and the other end of the second corner post 33 are locked to one side inside the box body 1, so that the first supporting rod 3 is fixed to one side inside the box body 1, but not limited thereto.
The second support rod 4 is disposed at the other side of the interior of the case 1, and is disposed opposite to the first support rod 3, the negative probe 6 is disposed at one side of the second support rod 4, and a third insulating gasket is disposed between one side of the negative probe 6 and the second support rod 4, wherein the third insulating gasket is made of rubber, but not limited thereto.
The adjusting device 7 includes a bolt 71, a spring element 72, and a nut 73, one end of the bolt penetrates through the box 1 from one side of the exterior of the box 1, and after the spring element 72 is sleeved on one end of the bolt 71, the length of the bolt 71 inserted into the box 1 is adjusted by the nut 73, so as to increase or decrease the distance between the positive probe 5 and the negative probe 6, so that the distance can be adjusted according to the size of the battery cell B, and the battery cell can meet the test requirements of different types of battery cells, wherein in an embodiment, the applicable battery cell types are 18650, 21700, and 46800, but not limited thereto.
In a first embodiment, refer again to fig. 1A, which is a top view of the interior of the device of the first embodiment of the present invention. As shown in the figure, the adjusting device 7 is disposed on the other side of the second support rod 4, and the bolt 71 is fixed on the other side of the second support rod 4.
In a second embodiment, please refer to fig. 2, which is a top view of the interior of the apparatus according to the second embodiment of the present invention. As shown in the figure, the adjusting device 7 is disposed on the other side of the first supporting rod 3, and the usage manner thereof is the same as that of the first embodiment, and therefore, the description thereof is omitted.
In a third embodiment, please refer to fig. 3, which is a top view of the apparatus according to the third embodiment of the present invention. As shown in the figure, 2 sets of adjusting devices 7 can be provided, one adjusting device 7 is disposed on the other side of the second supporting rod 4, and the other adjusting device 7 is disposed on the other side of the first supporting rod 3.
In an embodiment, the case includes a cover 8 and a hinge 9, one side of the cover 8 is locked with one side of the hinge 9, and the other side of the hinge 9 is locked with the other side of the exterior of the case 1, so that the cover 8 can be disposed on the case 1 and opened or closed, and the cover 8 is made of stainless steel, but not limited thereto.
In an embodiment, the cover includes a locking element S1 and a locking rod S2, one side of the locking element S1 is disposed on the other side of the cover 8, and the locking rod S2 is disposed on the outer side of the box 1, when the cover 8 covers the box 1, the locking element S1 is locked with the locking rod S2, so that the cover 8 is fixed on the box 1.
The utility model further provides a testing system suitable for electrical performance of a cylindrical battery cell, wherein a testing device TD can be placed in a temperature testing box according to user requirements, and the testing device TD is fixed on a charging and discharging system or other bottom plates for testing process, please refer to fig. 4, which is a schematic diagram of a device according to an embodiment of the utility model. As shown in the figure, taking the adjusting device of the first embodiment as an example, the usage of the testing device TD is to use one side of the battery cell B to abut against the first supporting rod 3, and apply pressure to the second supporting rod 4 to compress the spring member 72, thereby increasing the spacing distance between the positive probe 5 and the negative probe 6, and the other side of the battery cell B can be placed inside the box body 1 and abut against the second supporting rod 4, at this time, the pressure of the spring member 72 can be removed, so that the spring member 72 is released, thereby decreasing the spacing distance between the positive probe 5 and the negative probe 6, and adjust the length of the bolt 71 placed inside the box body 1 according to the size of the battery cell B by using the nut 73, and after the battery cell B is fixed inside the box body 1, the cover 8 is covered on the box body 1 and fastened and fixed.
At this time, the charging and discharging system is turned on, so that the current is transmitted to the positive probe 5 through the current sampling positive line I + or the voltage is transmitted to the negative probe 6 through the voltage sampling positive line I + or the current is transmitted to the battery cell through the current sampling negative line I-or the voltage is transmitted to the negative probe 6 through the voltage sampling negative line, and the current or the voltage is transmitted to the battery cell for testing.
Therefore, the utility model can reduce the influence of external air flow on the test temperature and humidity, reduce the impact on the external environment and the damage to users if the electric core has the risk of explosion, improve the reliability and the safety of measurement, and effectively reduce the mutual interference of voltage and current signals and ensure the accuracy of test data by adopting a four-wire test method for testing and data acquisition.
In summary, the first support rod and the adjustable second support rod can freely adjust the spacing distance between the anode probe and the cathode probe according to the size of the battery cell, and the required sampling line or test line is placed in the box body through the lead terminal, so as to perform electrical performance test.
The above description is only a preferred embodiment of the present invention, but not intended to limit the scope of the present invention; therefore, all the equivalent changes and modifications made in the patent protection scope and the content of the specification of the utility model still fall into the patent protection scope of the utility model.
Claims (13)
1. The utility model provides a testing arrangement suitable for cylinder electricity core electrical property which characterized in that, testing arrangement suitable for cylinder electricity core electrical property contains:
a box body;
the wire terminal is arranged in the box body;
the first supporting rod is arranged inside the box body;
the second supporting rod is arranged in the box body and is opposite to the first supporting rod;
the positive probe is arranged on one side of the first supporting rod;
the negative probe is arranged on one side of the second supporting rod;
the adjusting device comprises a bolt, a spring part and a nut, one end of the bolt penetrates into the box body from one side outside the box body, the spring part is sleeved at one end of the bolt, and the nut is used for adjusting the length of the bolt arranged in the box body so as to increase or reduce a spacing distance between the positive probe and the negative probe;
one side of an electric core abuts against the positive probe or the negative probe, and applies pressure to compress the spring piece so as to increase the spacing distance, the other side of the electric core is placed in the box body and abuts against the positive probe or the negative probe, then the pressure of the spring piece is removed so as to reduce the spacing distance, and the bolt is adjusted by the nut so as to fix the electric core in the box body.
2. The apparatus for testing electrical properties of a cylindrical cell according to claim 1, wherein the adjusting device is disposed on the other side of the first support rod or/and the other side of the second support rod.
3. The device according to claim 1, wherein the device comprises a cover and a hinge, one side of the cover is locked to one side of the hinge, and the other side of the hinge is locked to the other side of the exterior of the case.
4. The device according to claim 3, wherein the device for testing electrical properties of a cylindrical cell comprises a fastening member and a fastening rod, one side of the fastening member is disposed on the other side of the cover, the fastening rod is disposed on one side of the exterior of the case, and when the cover is covered on the case, the fastening member is fastened with the fastening rod, so that the cover is fixed on the case.
5. The apparatus of claim 1, wherein the lead terminals comprise a first terminal, a second terminal, a third terminal, a fourth terminal, a fifth terminal and a sixth terminal, a positive voltage sampling line is inserted through the first terminal and electrically connected to the positive probe, a positive current sampling line is inserted through the second terminal and electrically connected to the positive probe, a negative voltage sampling line is inserted through the third terminal and electrically connected to the negative probe, a negative current sampling line is inserted through the fourth terminal and electrically connected to the negative probe, a first thermocouple sampling line of a data acquisition device is inserted through the fifth terminal, a second thermocouple sampling line is inserted through the sixth terminal, and is electrically connected with the first thermocouple sampling wire.
6. The apparatus for testing electrical properties of cylindrical cells according to claim 1, wherein a first insulating gasket is disposed between one side of the lead terminal and the case body.
7. The apparatus for testing electrical properties of cylindrical cells according to claim 1, wherein a second insulating gasket is disposed between the positive electrode probe and the first supporting rod.
8. The apparatus for testing electrical properties of a cylindrical electrical core according to claim 1, wherein a third insulating washer is disposed between the negative probe and the second support rod.
9. The device of claim 1, wherein the testing device comprises a load post disposed below the casing.
10. The apparatus of claim 9, wherein the support column comprises a first support member, a second support member, a third support member, and a fourth support member.
11. The apparatus according to claim 10, wherein one side of the first bearing member has a first threaded hole, one side of the second bearing member has a second threaded hole, one side of the third bearing member has a third threaded hole, and one side of the fourth bearing member has a fourth threaded hole, such that the first bearing member, the second bearing member, the third bearing member, and the fourth bearing member are locked on a bracket of a charging and discharging system.
12. A test system suitable for electrical performance of cylindrical cells, the test system suitable for electrical performance of cylindrical cells comprising:
the charging and discharging system comprises a current sampling positive line, a voltage sampling positive line, a current sampling negative line and a voltage sampling negative line;
the testing device suitable for the electrical property of the cylindrical cell according to claim 1, which is electrically connected to the charging and discharging system, and the current sampling positive line, the voltage sampling positive line, the current sampling negative line and the voltage sampling negative line of the charging and discharging system are respectively electrically connected to the conducting wire terminal of the testing device;
the charging and discharging system starts a power supply, so that current is transmitted to the positive probe through the current sampling positive line or voltage through the voltage sampling positive line, current is transmitted to the negative probe through the current sampling negative line or voltage through the voltage sampling negative line, and the current or voltage is transmitted to the battery cell for testing.
13. The system according to claim 12, wherein said system for testing electrical properties of a cylindrical cell comprises a data collection device comprising a first thermocouple collection wire and a second thermocouple collection wire, said first thermocouple collection wire and said second thermocouple collection wire being electrically connected to said testing device, said data collection device turning on a power supply and obtaining a temperature of said cell from said first thermocouple collection wire and said second thermocouple collection wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122818973.4U CN216771932U (en) | 2021-11-17 | 2021-11-17 | Testing device and system suitable for electrical property of cylindrical battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122818973.4U CN216771932U (en) | 2021-11-17 | 2021-11-17 | Testing device and system suitable for electrical property of cylindrical battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216771932U true CN216771932U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122818973.4U Active CN216771932U (en) | 2021-11-17 | 2021-11-17 | Testing device and system suitable for electrical property of cylindrical battery cell |
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| Country | Link |
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| CN (1) | CN216771932U (en) |
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2021
- 2021-11-17 CN CN202122818973.4U patent/CN216771932U/en active Active
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Effective date of registration: 20230724 Address after: No. 86, Caiqiu Road, Duodao District, Jingmen City, Hubei Province, 448000 Patentee after: Hubei Enjie New Material Technology Co.,Ltd. Address before: 201306 No. 155 Nanlu Highway, Pudong New Area, Shanghai Patentee before: SHANGHAI ENJIE NEW MATERIAL TECHNOLOGY Co.,Ltd. |