CN217007628U - Lithium battery cell short circuit testing device - Google Patents
Lithium battery cell short circuit testing device Download PDFInfo
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- CN217007628U CN217007628U CN202123384155.4U CN202123384155U CN217007628U CN 217007628 U CN217007628 U CN 217007628U CN 202123384155 U CN202123384155 U CN 202123384155U CN 217007628 U CN217007628 U CN 217007628U
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- pressing plate
- battery cell
- negative electrode
- short circuit
- lithium battery
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Abstract
The utility model discloses a lithium battery cell short circuit testing device, which comprises a flattening rack, wherein the flattening rack comprises a lower pressing plate for placing a battery cell, an upper pressing plate and guide rods fixed at the two side parts of the lower pressing plate, the upper pressing plate is arranged on the two guide rods in a penetrating manner, the edge of the lower pressing plate is provided with a negative connecting seat for electrically connecting a negative electrode of a tester, and the negative connecting seat is detachably fixed or connected with an adjusting joint for contacting and electrically connecting with a negative electrode lug of each of a plurality of battery cells at intervals in a sliding manner; the edge of the upper pressure plate is provided with a pressing piece for pressing the battery cell cathode lug on the adjusting joint; the lower pressing plate or/and the upper pressing plate is/are provided with a positive connecting piece, the positive connecting piece is communicated with a battery cell shell arranged on the lower pressing plate to form a positive pole, and the positive connecting piece is electrically connected with the positive pole of the tester; the utility model has simple structure and easy operation, can test a plurality of cells simultaneously, greatly shortens the test time, can greatly improve the short circuit test efficiency and greatly saves the labor cost and the time cost.
Description
Technical Field
The utility model relates to the field of polymer lithium ion battery manufacturing, in particular to a lithium battery cell short circuit testing device.
Background
Because the bad proportion of short circuit in the production process of the lithium battery cell is smaller, but the bad of the type can not be avoided in the production process, in order to select the individual bad cell, the whole detection of each cell is needed to test whether the short circuit exists, at present, the short circuit test of the lithium battery cell in the field adopts a flatting mill to flatten the battery, and then a short circuit tester is used to measure whether the battery is short circuit, so that the positive electrode and the negative electrode of the short circuit tester are correspondingly connected with the positive electrode and the negative electrode of the lithium battery cell respectively, but the time spent on the single cell to test the short circuit one by one is longer, and the waste of manpower and cost is greatly caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that aiming at the defects of the prior art, the utility model provides the short circuit testing device for the battery core of the lithium battery, which has the advantages of simple structure and easy operation, can greatly improve the short circuit testing efficiency, can test a plurality of battery cores simultaneously and saves the cost.
The technical scheme adopted by the utility model for solving the technical problem is as follows: a lithium battery cell short circuit testing device comprises a flattening rack, wherein the flattening rack comprises a lower pressing plate for placing a battery cell, an upper pressing plate and guide rods fixed on two side parts of the lower pressing plate, the upper pressing plate is arranged on the two guide rods in a penetrating manner, and the lithium battery cell short circuit testing device is characterized in that a negative connecting seat for electrically connecting a negative electrode of a tester is arranged at the edge of the lower pressing plate, and adjusting joints for electrically connecting negative electrode lugs of a plurality of battery cells in a contact manner are detachably fixed or connected on the negative connecting seat in a sliding manner at intervals;
further, preferably, a pressing piece for pressing the battery cell negative electrode tab on the adjusting joint is arranged on the edge of the upper pressing plate;
preferably, the lower pressing plate or/and the upper pressing plate is/are provided with a positive connecting piece, the positive connecting piece and the battery cell shell placed on the lower pressing plate form a positive communication, and the positive connecting piece is electrically connected with the positive pole of the tester.
Further, preferably, the lower pressure plate or/and the upper pressure plate is/are an insulating member, the number of the positive electrode connecting members is multiple, and the multiple positive electrode connecting members are electrically connected.
Further, preferably, the lower pressing plate or/and the upper pressing plate is/are a metal piece, the lower pressing plate or/and the upper pressing plate is/are the positive electrode connecting piece, and the lower pressing plate and the upper pressing plate are insulated.
Preferably, the negative electrode connecting seat is fixedly connected or detachably connected to the outer wall surface of the edge of the lower pressing plate, and the height of the negative electrode connecting seat and the height of the adjusting joint meet the following requirements: and is electrically connected with the battery cell cathode lug arranged on the lower pressing plate in a contact way.
Further, preferably, the negative electrode connecting seat is transversely provided with a negative electrode conductor, and each adjusting joint is electrically connected with the negative electrode conductor.
Preferably, the negative conductor of the negative electrode connecting seat is a conductive chute or a conductive rail, and the bottom of the adjusting joint is in limited sliding fit in the conductive chute or on the conductive rail.
Further, preferably, the adjusting joint is inserted, clamped or screwed on the negative conductor.
Preferably, the negative electrode connecting seat is a negative electrode conductor, and each adjusting joint is electrically connected with the negative electrode connecting seat; and the negative electrode conductor is insulated from the lower pressing plate.
Preferably, the pressing piece is an elastic insulating piece, one or more pressing pieces are arranged along the edge of the upper pressure plate, and the pressing pieces correspond to the adjusting joints.
Preferably, the two sides of the negative electrode connecting seat are provided with insulating positioning columns, so that the top surfaces of the insulating columns are prevented from being flushed with the top surfaces of the adjusting connectors.
The utility model has the beneficial effects that: according to the lithium battery cell short circuit testing device, the adjusting joint, the negative connecting seat and the positive connecting piece which are in contact electrical connection with the negative electrode lug of the battery cell are arranged, so that the device can be suitable for short circuit testing of most lithium battery cells, can be used for testing a plurality of battery cells simultaneously, can greatly improve the short circuit testing efficiency, greatly shortens the testing time, is simple in overall structure and operation and strong in practicability, and greatly saves the time cost, the labor cost and the material cost.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the testing apparatus of the present invention;
FIG. 2 is an enlarged view of a portion of the test apparatus of the present invention;
FIG. 3 is another enlarged partial view of the test device of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
An element is said to be "secured to" or "disposed on" another element, either directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
The terms "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to an orientation or position based on the orientation or position shown in the drawings.
The terms "axial" and "radial" refer to the length of the entire device or component as "axial" and the direction perpendicular to the axial direction as "radial".
The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
The above terms are for convenience of description only and are not to be construed as limiting the present technical solution.
As shown in fig. 1 to fig. 3, a short circuit testing device for battery cells of a lithium battery includes a flattening frame, the flattening frame includes a lower pressing plate 20 for placing the battery cells 100, an upper pressing plate 10, and guide rods 30 fixed at two side portions of the lower pressing plate 20, the upper pressing plate 10 is inserted into the two guide rods 30, a negative electrode connecting seat 40 for electrically connecting a negative electrode of a tester is arranged at an edge of the lower pressing plate 20, an adjusting joint 50 for electrically contacting and connecting with respective negative electrode ears 102 of a plurality of battery cells 100 is detachably fixed or slidably connected to the negative electrode connecting seat 40 at an interval, the adjusting joint 50 is made of metal and has conductivity, and the negative electrode connecting seat 40 is electrically connected to the adjusting joint 50; the edge of the upper pressure plate 10 is provided with a pressing piece 60 for pressing the battery cell 100 negative electrode tab 102 on the adjusting joint 50; the lower pressing plate 20 or/and the upper pressing plate 10 is/are provided with a positive electrode connecting piece 70, the positive electrode connecting piece 70 is in positive electrode communication with a battery cell 100 shell placed on the lower pressing plate 20, the battery cell 100 shell is a positive electrode of the battery cell 100, and the positive electrode connecting piece 70 is electrically connected with a positive electrode of the tester.
Lithium battery electricity core 100 short circuit testing arrangement adopts the flatting mill to improve and sets up and form, the flatting mill frame still includes the cylinder, the cylinder is connected with top board 10 and provides power and makes top board 10 can reciprocate along the direction of height on two guide arms 30, during the electricity core test, top board 10 moves down to make anodal connecting piece 70 be connected with the electricity core shell, it compresses tightly electric core 100 negative pole ear 102 adjustment joint 50 to compress tightly piece 60, thereby make whole test circuit's intercommunication, make top board 10 move up when detecting and finishing.
The lower pressing plate 20 and the upper pressing plate 10 may both be insulating members, the positive electrode connecting member 70 may be disposed on the upper pressing plate 10 or the lower pressing plate 20, one or more positive electrode connecting members 70 may be disposed, and when one positive electrode connecting member is disposed, the positive electrode connecting member may be disposed in a long structure, so that the designed length of the positive electrode connecting member may cover a plurality of battery cells 100, so that the plurality of battery cells 100 may be measured simultaneously, and when the plurality of positive electrode connecting members 70 are disposed, the plurality of positive electrode connecting members 70 are electrically connected to form a parallel circuit, so that the plurality of battery cells 100 may be measured simultaneously; of course, the lower pressing plate 20 and the upper pressing plate 10 may also be metal pieces, at this time, the metal upper pressing plate 10 is used as the positive electrode connecting piece 70, and the lower pressing plate 20 and the upper pressing plate 10 are insulated; alternatively, part of the metal lower pressing plate 20 is the positive electrode connector 70, and the positive electrode connector 70 is insulated from the negative electrode connecting seat 40.
The negative electrode connecting seat 40 is fixedly connected or detachably connected on the outer wall surface of the edge of the lower pressing plate 20, the two sides of the negative electrode connecting seat 40 are provided with insulating positioning columns 80, the top surfaces of the insulating columns are flush with the top surface of the adjusting connector 50, so that overlarge pressure is prevented when the upper pressing plate 10 is pressed downwards, the negative electrode connecting seat 40 is prevented from being connected insecurely due to overlarge stress, and the negative electrode connecting seat 40 is limited and fixed; the height of both the negative electrode connecting socket 40 and the adjusting joint 50 meets the following requirements: the negative electrode tab 102 of the battery cell 100 placed on the lower pressing plate 20 is in contact electrical connection, which means that the top ends of the negative electrode connecting socket 40 and the adjusting joint 50 are flush or substantially flush with the top end of the lower pressing plate 20, so that when the battery cell 100 is placed on the lower pressing plate 20, the negative electrode tab on the side wall of the battery cell 100 can be in contact with the top end of the adjusting joint 50 to achieve electrical connection; of course, the top ends of the negative electrode connecting socket 40 and the adjusting joint 50 may also be higher than the lower pressing plate 20, and the negative electrode tab on the side wall of the battery cell 100 may contact with the side wall of the adjusting joint 50 to achieve electrical connection.
The negative electrode connecting seat 40 is transversely provided with a negative electrode conductor 41, and each adjusting joint 50 is electrically connected with the negative electrode conductor 41; the negative conductor 41 of the negative connecting seat 40 is a conductive chute or a conductive rail, the bottom of the adjusting joint 50 is in limited sliding fit in the conductive chute or the conductive rail, and it can be understood that the top of the negative conductor 41 is provided with a transverse chute or rail, the bottom of the adjusting joint 50 is provided with a shape matched with the chute or rail, so that the adjusting joint 50 and the negative conductor 41 can be in sliding connection, and the adjusting joint 50 can move transversely along the negative conductor 41; the number of the adjusting joints 50 may be multiple, and the bottom of the adjusting joint 50 may be a plug, a bayonet joint, or a screw head matched with the chute or the track, so that the adjusting joints 50 may be plugged, clamped, or screwed onto the negative conductor 41 to form multiple parallel circuits, so that multiple lithium battery cells 100 may be detected simultaneously, and meanwhile, the adjusting joints 50 may be moved according to the center distance of the lithium battery and the number of the battery cells 100 to be detected, and the distance between the adjusting joints 50 and the adjusting joints 50 may be adjusted to adapt to the number of the lithium batteries to be detected and the number of the battery cells 100 of different specifications and sizes; of course, the negative electrode connecting seat 40 itself may be the negative electrode conductor 41, each adjusting joint 50 is electrically connected to the negative electrode connecting seat 40, and the negative electrode conductor 41 is insulated from the lower pressing plate 20 to form a plurality of parallel circuits, and short circuit between the parallel circuits is avoided.
Compress tightly a 60 and be elastic insulation, elastic insulation can be the rubber strip, set up one or set up many along top board 10 edge, it can set up to horizontal stripe structure to compress tightly a 60, compress tightly a 60 and correspond the setting of adjusting joint 50, can understand, a plurality ofly compress tightly a 60 and a plurality of adjusting joint 50 one-to-one setting, or a rectangular piece 60 that connects and a plurality of adjusting joint 50 correspond the setting, it provides a pressure when being used for down plate 20 to push down for lithium cell electricity core 100 negative pole ear 102 and adjusting joint 50 to be connected to compress tightly a 60, make lithium cell electricity core 100 negative pole ear 102 be connected inseparabler with adjusting joint 50, avoid lithium cell electricity core 100 negative pole ear 102 to lead to the accuracy that influences the testing result with adjusting joint 50 contact failure.
Lithium battery electricity core short circuit testing arrangement test process: placing the lithium battery cell 100 to be tested on the lower pressing plate 20, placing the negative electrode tab 102 of the lithium battery cell 100 to be tested corresponding to the adjusting joint 50, moving the upper pressing plate 10 downwards by the adjusting cylinder, so that the positive electrode connecting piece 70 is electrically connected with the shell of the lithium battery cell 100, pressing the negative electrode tab 102 of the lithium battery cell 100 and the adjusting joint 50 by the pressing piece 60, so that the negative electrode tab 102 of the lithium battery cell 100 is electrically connected with the adjusting joint 50 tightly, a complete circuit is formed among the negative electrode connecting seat 40, the lithium battery cell 100, the positive electrode connecting piece 70 and the tester, and the tester indicates whether the lithium battery cell 100 has a short circuit problem or not; the utility model can be suitable for short circuit test of most lithium battery cores 100, can test a plurality of lithium battery cores 100 simultaneously, can greatly improve the short circuit test efficiency, greatly shortens the test time, has simple integral structure and operation and strong practicability, and greatly saves the time cost, the labor cost and the material cost.
Claims (10)
1. A lithium battery electric core short circuit testing device comprises a flattening rack, wherein the flattening rack comprises a lower pressing plate (20) for placing an electric core (100), an upper pressing plate (10) and guide rods (30) fixed at two side parts of the lower pressing plate (20), the upper pressing plate (10) penetrates through the two guide rods (30), and the lithium battery electric core short circuit testing device is characterized in that a negative connecting seat (40) for electrically connecting a negative electrode of a tester is arranged at the edge of the lower pressing plate (20), and adjusting joints (50) for being in contact and electrical connection with respective negative electrode lugs (102) of a plurality of electric cores (100) are detachably fixed or slidably connected on the negative connecting seat (40) at intervals;
a pressing piece (60) used for pressing the battery cell (100) negative electrode tab (102) on the adjusting joint (50) is arranged at the edge of the upper pressing plate (10);
the battery cell testing device is characterized in that the lower pressing plate (20) or/and the upper pressing plate (10) is/are provided with a positive connecting piece (70), the positive connecting piece (70) is communicated with a battery cell shell (101) placed on the lower pressing plate (20) in a positive mode, and the positive connecting piece (70) is electrically connected with the positive pole of the testing instrument.
2. The lithium battery cell short circuit testing device of claim 1, wherein the lower pressing plate (20) and the upper pressing plate (10) are insulating members, the number of the positive electrode connecting members (70) is multiple, and the multiple positive electrode connecting members (70) are electrically connected with each other.
3. The lithium battery cell short circuit testing device of claim 1, wherein the lower pressing plate (20) and the upper pressing plate (10) are metal pieces, the metal upper pressing plate (10) is the positive electrode connecting piece (70), and the lower pressing plate (20) and the upper pressing plate (10) are insulated from each other; or part of the metal lower pressing plate (20) is the positive connecting piece (70), and the positive connecting piece (70) is insulated from the negative connecting seat (40).
4. The lithium battery cell short circuit testing device of claim 1, wherein the negative electrode connecting base (40) is fixedly or detachably connected to the outer wall surface of the edge of the lower pressing plate (20), and the heights of the negative electrode connecting base (40) and the adjusting joint (50) meet the following requirements: is in contact and electric connection with the negative electrode tab (102) of the battery core (100) arranged on the lower pressure plate (20).
5. The lithium battery cell short circuit testing device of claim 1, characterized in that the negative electrode connecting seat (40) is transversely provided with a negative electrode conductor (41), and each adjusting joint (50) is electrically connected with the negative electrode conductor (41).
6. The lithium battery cell short circuit testing device of claim 5, wherein the negative conductor (41) of the negative electrode connecting seat (40) is a conductive chute or a conductive rail, and the bottom of the adjusting joint (50) is in limited sliding fit in the conductive chute or on the conductive rail.
7. The lithium battery cell short-circuit testing device of claim 5, characterized in that the adjusting joint (50) is plugged, snapped or screwed onto the negative conductor (41).
8. The lithium battery cell short circuit testing device of claim 1, characterized in that the negative connection socket (40) is itself a negative electrical conductor (41), each adjustment joint (50) being electrically connected to the negative connection socket (40); the negative electrode conductor (41) is insulated from the lower pressure plate (20).
9. The lithium battery cell short circuit testing device of claim 1, wherein the pressing member (60) is an elastic insulating member, one or more pressing members are arranged along the edge of the upper pressing plate (10), and the pressing member (60) corresponds to the adjusting joint (50).
10. The lithium battery cell short circuit testing device of claim 1, wherein two sides of the negative electrode connecting seat (40) are provided with insulating positioning columns (80), and top surfaces of the insulating positioning columns (80) are flush with top surfaces of the adjusting joints (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384155.4U CN217007628U (en) | 2021-12-29 | 2021-12-29 | Lithium battery cell short circuit testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384155.4U CN217007628U (en) | 2021-12-29 | 2021-12-29 | Lithium battery cell short circuit testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217007628U true CN217007628U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123384155.4U Active CN217007628U (en) | 2021-12-29 | 2021-12-29 | Lithium battery cell short circuit testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217007628U (en) |
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2021
- 2021-12-29 CN CN202123384155.4U patent/CN217007628U/en active Active
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