CN217466986U - Electricity core test fixture - Google Patents
Electricity core test fixture Download PDFInfo
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- CN217466986U CN217466986U CN202220918855.2U CN202220918855U CN217466986U CN 217466986 U CN217466986 U CN 217466986U CN 202220918855 U CN202220918855 U CN 202220918855U CN 217466986 U CN217466986 U CN 217466986U
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Abstract
The utility model relates to an electricity core test fixture, it includes: a guide fixing rod; the fixing plate is connected with the guide fixing rod; the first movable plate is arranged on the guide fixing rod in a sliding mode, and the first movable plate and the fixing plate are arranged in parallel along the length direction of the guide fixing rod; the limiting mechanism is arranged on one side of the first movable plate, which is far away from the fixed plate, and is used for adjusting and limiting the position of the first movable plate; the pressing mechanism comprises an installation rod and two groups of pressing components, the installation rod is connected with the guide fixing rod and can slide along the length direction of the guide fixing rod, and the two groups of pressing components are arranged on the installation rod in a sliding mode so as to be close to or far away from each other; and the pressure testing unit is arranged on the first movable plate or the fixed plate and can test the pressure between the battery cell to be tested and the first movable plate or the fixed plate. The utility model provides an electricity core test fixture can practice thrift the test cost, improves efficiency of software testing.
Description
Technical Field
The utility model relates to a battery production facility technical field especially relates to an electricity core test fixture.
Background
After the lithium ion battery is formed into the component capacity, the electrical performance cycle test and the safety performance test are required to be carried out on the single battery cell, and particularly in the cycle process, the test data is inaccurate due to the fact that the interior of a winding core is not tightly attached to prevent the square battery cell from generating gas, so that the external pressure of the battery cell test clamp is required to be applied to prevent the shell from expanding. Meanwhile, in the testing process, the positive and negative poles of the battery cell are required to be welded with aluminum link plates or other devices by laser, so that the positive and negative poles can be stably connected with the lead. In the monomer battery cell cycle test process, the expansion rate of the battery cell in the charge and discharge process needs to be tested.
However, in the prior art, most of the test fixtures for the square battery cell are fixed model special fixtures, and if the model of the test battery cell is changed, the test fixture needs to be changed, so that the waste of test resources is serious, and after the linking pieces or other devices are welded on the positive and negative poles of the square single battery cell, the aluminum linking pieces or other devices of the single battery cell cannot be reused, and each single battery cell needs to be welded, which is time-consuming and has high test cost; in addition, when the collision rate is tested again, the thickness of the square battery is measured by a caliper after the test fixture is taken down, and then the expansion rate is calculated, so that the operation is complicated, and the test data is inaccurate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electricity core test fixture to practice thrift the test cost, improve efficiency of software testing.
In order to achieve the above object, the utility model provides an electricity core test fixture, include:
a guide fixing rod;
the fixing plate is connected to the guide fixing rod;
the first movable plate is arranged on the guide fixing rod in a sliding mode, and the first movable plate and the fixing plate are arranged in parallel along the length direction of the guide fixing rod;
the limiting mechanism is arranged on one side, away from the fixed plate, of the first movable plate and is used for adjusting and limiting the position of the first movable plate;
the pressing mechanism comprises an installation rod and two groups of pressing components, the installation rod is connected to the guide fixing rod and can slide along the length direction of the guide fixing rod, and the two groups of pressing components are arranged on the installation rod in a sliding mode so as to be close to or far away from each other;
and the pressure testing unit is arranged on the first movable plate or the fixed plate and can test the pressure between the battery cell to be tested and the first movable plate or the fixed plate.
Optionally, the limiting mechanism includes:
the limiting plate is connected to the guide fixing rod, and a threaded hole is formed in the limiting plate;
the screw rod penetrates through the limiting plate and is in threaded connection with the threaded hole, and one end of the screw rod can be abutted to the first movable plate.
Optionally, the limiting plate is parallel to the fixing plate.
Optionally, the installation pole has seted up rectangular hole along its length direction, compress tightly the subassembly and include:
the sliding block is connected with the long hole in a sliding mode and is provided with a threaded hole;
and the compression bolt is in threaded connection with the threaded hole, and the end face of the compression bolt extends out of the threaded hole so as to compress the positive pole column or the negative pole column of the battery cell to be tested.
Optionally, the slider includes an upper limit portion, a guide portion, and a lower limit portion that are connected in sequence, the mounting rod is sandwiched between the upper limit portion and the lower limit portion, and the guide portion is disposed in the elongated hole.
Optionally, both ends of the installation rod are connected with the guide fixing rods, sliding grooves are formed in both ends of the installation rod, and the guide fixing rods are slidably arranged in the sliding grooves.
Optionally, the battery cell testing fixture further includes a second movable plate arranged in parallel with the first movable plate, and the second movable plate is slidably connected to the guide fixing rod and arranged between the first movable plate and the fixing plate;
the pressing mechanisms are arranged between the first movable plate and the second movable plate and between the second movable plate and the fixed plate.
Optionally, the number of the second movable plates is one.
Optionally, the number of the second movable plates is at least two, the pressing mechanism is arranged between two adjacent second movable plates, and the pressure testing unit is arranged on the second movable plates.
Optionally, the pressure testing unit is a pressure sensor.
It is from top to bottom visible, the utility model provides a technical scheme, first fly leaf can be followed the direction dead lever and slided, consequently can adjust the interval between first fly leaf and the fixed plate, and then the clamp establishes the electric core that awaits measuring of different thickness. The position of installation pole and two sets of subassemblies that compress tightly can be adjusted, consequently, all can be suitable for to the electric core of different thickness and the electric core homoenergetic that anodal utmost point post and negative pole utmost point post interval are different. Meanwhile, the pole and the lead are compressed through the compressing assembly, so that the procedure of welding the pole and the linking piece or other devices is replaced, the testing efficiency is high, and the testing cost is low. The pressure between the to-be-tested battery cell and the fixed plate or the first movable plate is tested through the pressure testing unit, the expansion rate is obtained through the pressure change in the front and the back, and the inaccuracy and the testing efficiency of testing data are improved.
Drawings
Fig. 1 is a front view of a cell testing fixture provided in an embodiment of the present invention;
fig. 2 is a top view of a cell testing fixture provided in an embodiment of the present invention;
fig. 3 is a cross-sectional view of a hold-down mechanism provided by an embodiment of the present invention;
fig. 4 is an isometric view of another cell testing fixture provided in an embodiment of the present invention;
fig. 5 is a front view of another cell test fixture provided by the embodiment of the present invention.
In the figure:
1. a guide fixing rod; 2. a fixing plate; 3. a first movable plate;
4. a limiting mechanism; 41. a limiting plate; 42. a screw;
5. a hold-down mechanism; 51. mounting a rod; 511. a strip hole; 52. a compression assembly; 521. a slider; 5211. an upper limit portion; 5212. a guide portion; 5213. a lower limiting part; 522. a hold-down bolt;
6. a pressure test unit; 7. a second movable plate.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
The present invention is limited to certain orientation words, and the use of orientation words such as "upper", "lower", "left", "right", "inner" and "outer" in the case where no opposite explanation is made is convenient for understanding, and thus does not limit the scope of the present invention.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a cell test fixture, which is used for clamping a cell when the cell is tested, so that the test cost is saved, and the test efficiency is improved.
As shown in fig. 1 and fig. 2, the battery cell testing fixture provided in this embodiment includes a guiding fixing rod 1, a fixing plate 2, a first movable plate 3, a limiting mechanism 4, a pressing mechanism 5, and a pressure testing unit 6, where the guiding fixing rod 1 is used to fix the fixing plate 2 and provide guidance for the first movable plate 3 and the pressing mechanism 5; the electric core clamp that awaits measuring is located between fixed plate 2 and the first fly leaf 3, and hold-down mechanism 5 is used for compressing tightly anodal utmost point post and negative pole post, makes the wire of placing on anodal utmost point post or negative pole post be connected with anodal utmost point post or negative pole post electricity all the time to the electric core power supply that awaits measuring through the wire.
The limiting mechanism 4 is used for adjusting and limiting the position of the first movable plate 3, wherein after the battery cell is placed between the fixed plate 2 and the first movable plate 3, the limiting mechanism 4 supports against and pushes the first movable plate 3 to the side where the fixed plate 2 is located, so that the first movable plate 3 and the fixed plate 2 are respectively abutted to two sides of the battery cell to be tested, namely, the distance between the first movable plate 3 and the fixed plate 2 is approximately equal to the thickness of the battery cell to be tested. In the test process of the battery cell to be tested, when the battery cell to be tested expands, the limiting mechanism 4 can limit the first movable plate 3 to move due to the fact that the limiting mechanism is abutted against the first movable plate 3, and therefore the battery cell is prevented from expanding; after the test is finished, the limiting mechanism 4 is adjusted to make the first movable plate 3 far away from the fixed plate 2, so that the battery cell to be tested can be taken out conveniently.
The pressure testing unit 6 is used for testing the pressure between the cell to be tested and the first movable plate 3 or the fixed plate 2, so that a user can use the expansion rate formula to: and calculating the expansion rate of (P2-P1)/P1 by 100%, wherein L is the expansion rate, P1 is the pressure between the cell to be tested and the first movable plate 3 or the fixed plate 2 before the test, and P2 is the pressure between the cell to be tested and the first movable plate 3 or the fixed plate 2 after the test is finished.
Specifically, the fixing plate 2 is connected to the guide fixing rod 1, and optionally, the fixing plate 2 is connected to an end of the guide fixing rod 1. The first movable plate 3 is slidably arranged on the guide fixing rod 1, and the first movable plate 3 and the fixing plate 2 are arranged in parallel along the length direction of the guide fixing rod 1, so that the two sides of the battery cell to be tested are uniformly stressed, and the expansion rate is improved.
The limiting mechanism 4 is disposed on a side of the first movable plate 3 away from the fixed plate 2. Hold-down mechanism 5 sets up between first fly leaf 3 and fixed plate 2, and including installation pole 51 and two sets of subassemblies 52 that compress tightly, installation pole 51 is connected in direction dead lever 1, and can slide along the length direction of direction dead lever 1, two sets of subassemblies 52 that compress tightly slide and set up in installation pole 51, with being close to each other or keeping away from, consequently, can be according to the position of the thickness regulation installation pole 51 of the electric core that awaits measuring, and according to the position regulation two sets of subassemblies 52 that compress tightly of anodal utmost point post and negative pole post's position, make two sets of subassemblies 52 that compress tightly just respectively with anodal utmost point post and negative pole post.
The pressure testing unit 6 is disposed on the first movable plate 3 or the fixed plate 2, and optionally, a hole or a groove may be formed on the first movable plate 3 or the second movable plate 7, so that the testing portion of the pressure testing unit 6 can abut against a side surface of the electrical core to be tested. Optionally, the pressure test unit 6 is a pressure sensor.
Optionally, first fly leaf 3 and fixed plate 2 are the cuboid structure, and the quantity of direction dead lever 1 is four, and the four corners of first fly leaf 3 and fixed plate 2 all is connected with direction dead lever 1.
The first movable plate 3 of the electrical core testing fixture provided by the embodiment can slide along the guide fixing rod 1, so that the distance between the first movable plate 3 and the fixing plate 2 can be adjusted, and then electrical cores to be tested with different thicknesses can be clamped. The positions of the mounting rod 51 and the two sets of pressing assemblies 52 can be adjusted, so that the mounting rod can be suitable for electric cores with different thicknesses and electric cores with different spacing distances between the positive pole and the negative pole. Meanwhile, the pole and the lead are compressed through the compressing assembly 52, so that the procedure of welding the pole and the linking sheet or other devices is replaced, the testing efficiency is high, and the testing cost is low. The pressure between the battery cell to be tested and the fixed plate 2 or the first movable plate 3 is tested through the pressure testing unit 6, so that the expansion rate is obtained through the pressure change in the front and the back, and the inaccuracy and the testing efficiency of the testing data are improved.
As shown in fig. 2, the limiting mechanism 4 includes a limiting plate 41 and a screw 42, the limiting plate 41 is connected to the guiding fixing rod 1, and a threaded hole is formed in the limiting plate 41. The screw rod 42 penetrates through the limiting plate 41 and is in threaded connection with the threaded hole, and one end of the screw rod 42 can be abutted against the first movable plate 3. The screw 42 is rotated to adjust the distance between the limiting plate 41 and the first movable plate 3, and thus the distance between the first movable plate 3 and the fixed plate 2. Due to the self-locking function between the screw rod 42 and the threaded hole, the position of the first movable plate 3 can be ensured not to change in the test process of the battery cell to be tested. Optionally, the limit plate 41 is parallel to the fixing plate 2 to facilitate mounting the screw 42.
As shown in fig. 2 and 3, the mounting rod 51 is provided with a long hole 511 along a length direction thereof, the pressing assembly 52 includes a sliding block 521 and a pressing bolt 522, the sliding block 521 is slidably connected to the long hole 511, and the sliding block 521 is provided with a threaded hole. The hold-down bolt 522 spiro union in screw hole, and the terminal surface of hold-down bolt 522 stretches out the screw hole, and the one end of hold-down bolt 522 can compress tightly anodal utmost point post or the negative pole utmost point post of the examination electric core of awaiting measuring. The two groups of pressing assemblies 52 are close to and far away from each other through the sliding of the sliding blocks 521. By rotating the pressing bolt 522, the end surface of the pressing bolt 522 presses the wire and the pole. It should be noted that the pressing bolt 522 is made of an insulating material to avoid short circuit, and the pressing bolt 522 may be made of, but not limited to, phenolic plastic.
As shown in fig. 3, in order to ensure the stability of the sliding of the slider 521, the slider 521 includes an upper limit portion 5211, a guide portion 5212 and a lower limit portion 5213 which are connected in sequence, the mounting rod 51 is interposed between the upper limit portion 5211 and the lower limit portion 5213, and the guide portion 5212 is disposed in the elongated hole 511. The upper and lower retainer portions 5211 and 5213 prevent the slider 521 from being separated from the mounting rod 51, and the elongated hole 511 can provide a guide for the guide portion 5212, thereby improving the stability of the slider 521 in sliding.
As shown in fig. 4, the two ends of the mounting rod 51 are connected with the guiding fixing rods 1, the two ends of the mounting rod 51 are provided with sliding grooves, and the guiding fixing rods 1 are slidably disposed in the sliding grooves. The cooperation of spout and direction dead lever 1 can improve the gliding stability of installation pole 51.
As shown in fig. 4 and fig. 5, optionally, in order to improve the testing efficiency, the battery cell testing fixture provided in this embodiment may further simultaneously clamp a plurality of battery cells to be tested, specifically, the battery cell testing fixture further includes a second movable plate 7 disposed parallel to the first movable plate 3, and the second movable plate 7 is slidably connected to the guiding fixing rod 1 and disposed between the first movable plate 3 and the fixing plate 2. Because the second movable plate 7 can also be slidably connected along the guiding sliding rod, the electric core to be tested can be clamped between the first movable plate 3 and the second movable plate 7 and between the second movable plate 7 and the fixing plate 2.
The compressing mechanisms 5 are respectively arranged between the first movable plate 3 and the second movable plate 7 and between the second movable plate 7 and the fixed plate 2, so that the compressing mechanisms 5 can respectively compress the poles of the plurality of to-be-tested battery cells.
Optionally, the number of the second movable plates 7 is one, and at this time, the fixed plate 2 and the movable plate may be provided with the pressure testing unit 6 to respectively test the pressure between the battery cell to be tested and the fixed plate 2, and the pressure between the battery cell to be tested and the first movable plate 3; or the first movable plate 3 and the second movable plate 7 are provided with pressure testing units 6 for respectively testing the pressure between the battery cell to be tested and the second movable plate 7 and the pressure between the battery cell to be tested and the first movable plate 3; or two pressure testing units 6 are arranged on the second movable plate 7 to respectively test the pressures of the two cells to be tested and the two opposite sides of the second movable plate 7.
Of course, in other alternative embodiments, the number of the second movable plates 7 is at least two, the pressing mechanism 5 is disposed between two adjacent second movable plates 7, and the pressure testing unit 6 is disposed on the second movable plates 7.
Although the invention has been described in detail with respect to the general description and the specific embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.
Claims (10)
1. The utility model provides a battery cell test fixture which characterized in that includes:
a guide fixing rod (1);
a fixing plate (2) connected to the guide fixing rod (1);
the first movable plate (3) is arranged on the guide fixing rod (1) in a sliding mode, and the first movable plate (3) and the fixing plate (2) are arranged in parallel along the length direction of the guide fixing rod (1);
the limiting mechanism (4) is arranged on one side, away from the fixed plate (2), of the first movable plate (3) and used for adjusting and limiting the position of the first movable plate (3);
the pressing mechanism (5) comprises a mounting rod (51) and two groups of pressing assemblies (52), the mounting rod (51) is connected to the guide fixing rod (1) and can slide along the length direction of the guide fixing rod (1), and the two groups of pressing assemblies (52) are arranged on the mounting rod (51) in a sliding mode so as to be close to or far away from each other;
the pressure testing unit (6) is arranged on the first movable plate (3) or the fixed plate (2) and can test the pressure between the battery cell to be tested and the first movable plate (3) or the fixed plate (2).
2. The cell testing fixture according to claim 1, wherein the limiting mechanism (4) comprises:
the limiting plate (41) is connected to the guide fixing rod (1), and a threaded hole is formed in the limiting plate (41);
the screw rod (42) penetrates through the limiting plate (41) and is in threaded connection with the threaded hole, and one end of the screw rod (42) can be abutted to the first movable plate (3).
3. The cell testing jig of claim 2, characterized in that the limiting plate (41) is parallel to the fixing plate (2).
4. The cell testing jig of claim 1, wherein the mounting rod (51) is provided with a long hole (511) along a length direction thereof, and the compressing assembly (52) comprises:
the sliding block (521) is connected to the long hole (511) in a sliding mode, and a threaded hole is formed in the sliding block (521);
and the compression bolt (522) is screwed in the threaded hole, and the end surface of the compression bolt (522) extends out of the threaded hole so as to compress the positive pole column or the negative pole column of the battery cell to be tested.
5. The battery cell testing jig of claim 4, wherein the slider (521) comprises an upper limit portion (5211), a guide portion (5212) and a lower limit portion (5213) which are connected in sequence, the mounting rod (51) is clamped between the upper limit portion (5211) and the lower limit portion (5213), and the guide portion (5212) is arranged in the elongated hole (511).
6. The battery cell testing fixture according to claim 4, wherein the guiding fixing rod (1) is connected to both ends of the mounting rod (51), sliding grooves are formed in both ends of the mounting rod (51), and the guiding fixing rod (1) is slidably disposed in the sliding grooves.
7. The cell test fixture according to any of claims 1 to 6, further comprising a second movable plate (7) disposed parallel to the first movable plate (3), wherein the second movable plate (7) is slidably connected to the guiding and fixing rod (1) and disposed between the first movable plate (3) and the fixing plate (2);
the pressing mechanisms (5) are arranged between the first movable plate (3) and the second movable plate (7) and between the second movable plate (7) and the fixed plate (2).
8. The cell testing fixture according to claim 7, characterized in that the number of the second movable plates (7) is one.
9. The cell testing jig according to claim 7, wherein the number of the second movable plates (7) is at least two, the pressing mechanism (5) is disposed between two adjacent second movable plates (7), and the pressure testing unit (6) is disposed on the second movable plates (7).
10. The cell testing jig according to claim 1, characterized in that the pressure testing unit (6) is a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220918855.2U CN217466986U (en) | 2022-04-20 | 2022-04-20 | Electricity core test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220918855.2U CN217466986U (en) | 2022-04-20 | 2022-04-20 | Electricity core test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217466986U true CN217466986U (en) | 2022-09-20 |
Family
ID=83268749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220918855.2U Active CN217466986U (en) | 2022-04-20 | 2022-04-20 | Electricity core test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217466986U (en) |
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2022
- 2022-04-20 CN CN202220918855.2U patent/CN217466986U/en active Active
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