CN213750258U - Lithium ion battery performance detection device - Google Patents
Lithium ion battery performance detection device Download PDFInfo
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- CN213750258U CN213750258U CN202022823194.9U CN202022823194U CN213750258U CN 213750258 U CN213750258 U CN 213750258U CN 202022823194 U CN202022823194 U CN 202022823194U CN 213750258 U CN213750258 U CN 213750258U
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- ion battery
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Abstract
The utility model provides a lithium ion battery performance detection device, it includes the bottom sprag, push down the device, thickness measurement device and electrically conductive briquetting, wherein, the bottom sprag is used for supporting the bottom surface of lithium ion battery thickness direction, push down the vertical top of device setting at the bottom sprag, exert different test pressure with the controllable top surface to lithium ion battery thickness direction, thickness measurement device is constructed for when pushing down the device and pushing down lithium ion battery with certain test pressure, detect lithium ion battery's thickness value, electrically conductive briquetting sets up in the lithium ion battery circumference side department of at least one of them, and contact with lithium ion battery when pushing down the device and exerting pressure in lithium ion battery, with the power supply unit electric connection that provides test voltage to lithium ion battery, form the current detection return circuit. The utility model discloses a lithium ion battery performance detection device not only can carry out thickness measurement to lithium ion battery, can also carry out the withstand voltage test of insulating to there is better result of use.
Description
Technical Field
The utility model relates to a technical field is made to lithium ion battery, in particular to lithium ion battery performance detection device.
Background
Along with the enhancement of environmental protection consciousness of people, the development and application of the lithium ion battery are correspondingly improved. The square lithium ion battery has become a main product of new energy companies due to the advantages of high packaging reliability, good tolerance, relatively simple grouping and the like. The production process of the battery mainly comprises homogenizing, coating, rolling, slitting, assembling, forming and the like. After the formation of the battery core and before shipment, detection such as coating, insulation and voltage resistance test, thickness measurement and the like is required. The detection method is to detect the leakage current of the coated battery cell after applying voltage to the battery cell shell under certain pressure, and the thickness measurement is to detect the thickness of the battery cell under certain pressure.
At present, the voltage insulation and withstand test and the thickness measurement of the battery are respectively carried out by adopting two different stations, so that the space of equipment is increased, the manufacturing cost of the equipment is also increased, and the two types of detection are carried out by increasing certain pressure to a battery core, so that the design of the lithium ion battery performance detection device integrating the thickness and the voltage insulation and withstand detection functions is necessary.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a lithium ion battery performance detection device to can carry out thickness measurement and withstand voltage detection to lithium ion battery at least.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a lithium ion battery performance detection device, comprising:
the bottom support forms a support for the bottom surface of the lithium ion battery in the thickness direction;
the pressing device is arranged vertically above the bottom support and is used for applying different testing pressures to the top surface of the lithium ion battery in the thickness direction on the bottom support in a controllable manner;
a thickness measuring device configured to detect a thickness value of the lithium ion battery when the pressing device presses down the lithium ion battery at a certain test pressure;
the conductive pressing block is arranged on the circumferential side face of at least one of the lithium ion batteries, and when the pressing device presses the lithium ion batteries under certain test pressure, the conductive pressing block contacts the lithium ion batteries so as to be electrically connected with a power supply device for providing test voltage for the lithium ion batteries, so that a current detection loop is formed.
Further, the conductive pressing block comprises an upper conductive pressing block and a lower conductive pressing block which are positioned in the thickness direction of the lithium ion battery, and side conductive pressing blocks which are positioned in the height direction and the width direction of the lithium ion battery.
Furthermore, the lower conductive pressing block is fixedly arranged on the bottom support to form a support for the bottom surface of the lithium ion battery in the thickness direction.
Furthermore, the upper conductive pressing block is fixed on the pressing device to follow the pressing device, so that the top surface of the lithium ion battery in the thickness direction is pressed downwards.
Further, the side conduction voltage block may be driven closer to or farther from the lithium ion battery.
Further, the pressing device comprises a power device and an upper insulating pressing plate which is used for receiving the power output by the power device to ascend or descend.
Furthermore, the power device is a servo motor, and the servo motor is connected to the upper insulating pressing plate through a screw rod; and a pressure sensor for detecting the pressing pressure of the upper insulating pressing plate is arranged on the screw rod.
Furthermore, the thickness measuring device comprises a displacement probe which follows the upper insulating pressing plate, and a limiting block which is fixed on the bottom support and is arranged corresponding to the displacement probe.
Compared with the prior art, the utility model discloses following advantage has:
lithium ion battery performance detection device, through the thickness measurement device and the electrically conductive briquetting that set up, not only can carry out thickness measurement to lithium ion battery, can also carry out withstand voltage test to lithium ion battery, and easy operation to can reduce the manufacturing cost of equipment and save equipment occupation space, can shorten the beat simultaneously, improve production efficiency, and have better result of use.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of a lithium ion battery performance detection device according to an embodiment of the present invention;
FIG. 2 is a top view of a bottom support according to an embodiment of the present invention;
fig. 3 is a schematic view of a testing process of the lithium ion battery performance testing apparatus according to the embodiment of the present invention;
description of reference numerals:
1. a bottom support; 101. a lower conductive compact; 102. a side conductive compact; 103. a limiting block; 2. an upper insulating pressing plate; 201. an upper conductive compact; 3. a servo motor; 4. a screw; 10. a pressure sensor; 20. a displacement probe; 30. a second probe; 100. a lithium ion battery.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The embodiment relates to a lithium ion battery performance detection device, as shown in fig. 1 and 2, the lithium ion battery performance detection device comprises a bottom support 1, a pressing device, a thickness measurement device and a conductive pressing block. The bottom support 1 is used to support the bottom surface of the lithium ion battery 100 in the thickness direction. The pressing device is arranged vertically above the bottom support 1 to controllably apply different test pressures to the top surface of the lithium ion battery 100 placed on the bottom support 1 in the thickness direction. And the thickness measuring device is configured to detect the thickness value of the lithium ion battery 100 when the pressing device presses the lithium ion battery 100 at a certain test pressure.
In addition, the conductive pressing block is arranged on the circumferential side surface of at least one of the lithium ion batteries 100, and when the pressing device presses the lithium ion battery 100 at a certain test pressure, the conductive pressing block contacts the lithium ion battery 100 to be electrically connected with a power supply device which provides the test voltage for the lithium ion battery 100, so that a current detection loop is formed.
Specifically, as shown in fig. 1 and 2, the conductive compact of the present embodiment includes an upper conductive compact 201 and a lower conductive compact 101 located in the thickness direction of the lithium ion battery 100, and side conductive compacts 102 located in the height direction and the width direction of the lithium ion battery 100. That is, except that the side where the positive electrode and the negative electrode of the lithium ion battery 100 are located is not provided with the conductive pressing block, other sides of the lithium ion battery 100 are provided with the conductive pressing block, so that the lithium ion battery 100 can be well compressed, on the other hand, the lithium ion battery 100 can be favorably electrically connected with a power supply device which provides test voltage, and a detection loop of current can be formed, so that the lithium ion battery 100 can be subjected to an insulation and voltage-withstanding test.
The lower conductive compact 101 of the present embodiment is fixedly disposed on the bottom support 1 to support the bottom surface of the lithium ion battery 100 in the thickness direction, wherein the bottom support 1 is a plate-shaped insulating pressing plate. The upper conductive pressing block 201 is fixed on the pressing device and follows the pressing device to press down the top surface of the lithium ion battery 100 in the thickness direction, that is, along with the downward movement of the pressing device, the upper conductive pressing block 201 can press the top surface of the lithium ion battery 100 in the thickness direction. By providing the upper conductive compact 201 and the lower conductive compact 101, it is possible to compress both end faces in the thickness direction of the lithium ion battery 100. While the side conducting voltage block 102 can be driven close to or away from the lithium ion battery 100, preferably, the side conducting voltage block 102 is driven close to or away from the lithium ion battery 100 by a cylinder. That is, the side conductive voltage block 102 is connected to the power output end of the cylinder, so that the side conductive voltage block 102 can compress the corresponding end face of the lithium ion battery 100 under the driving of the cylinder.
With continued reference to fig. 1 and 2, the pressing device of the present embodiment includes a power device, and an upper insulating pressing plate 2 that receives power output from the power device to ascend or descend. Specifically, the power device is a servo motor 3, the servo motor 3 is connected to the upper insulating pressing plate 2 through a screw rod 4, and a pressure sensor 10 for detecting the pressing pressure of the upper insulating pressing plate 2 is arranged on the screw rod 4. With the arrangement, the screw rod 4 can be driven by the arranged power device and drives the insulating pressing plate to realize the ascending or descending of the upper conductive pressing block 201, so that the lithium ion battery 100 can be pressed or released from pressing. The pressure sensor 10 is provided to detect the pressure applied to the lithium ion battery 100 to be detected.
In addition, the thickness measuring device of this embodiment includes a displacement probe 20 following the upper insulating pressing plate 2, and a stopper 103 fixed on the bottom support 1 and disposed corresponding to the displacement probe 20. Through the downward movement of the upper insulating pressing plate 2, the displacement probe 20 can abut against the limiting block 103, and the thickness of the lithium ion battery 100 is calculated through conversion in the prior art, so that the thickness of the lithium ion battery 100 is detected.
It should be noted that the aforementioned power supply device for supplying the test voltage to the lithium ion battery 100 is preferably an insulation voltage withstand test device, and the device can adopt a mature device in the prior art. In addition, a detection element for connecting the withstand voltage testing apparatus and the lithium ion battery 100 needs to be provided, specifically, for example, a second probe 30, and the second probe 30 is abutted against the positive pole of the lithium ion battery 100, so that the current detection circuit can be turned on.
During testing, as shown in fig. 1 and 2 and fig. 3, the lithium ion battery 100 is placed on the lower conductive pressing block 101, the side conductive pressing block 102 clamps and fixes the lithium ion battery 100 by driving of the cylinder, the servo motor 3 drives the upper insulating pressing plate 2 and the upper conductive block to move downwards to press the lithium ion battery 100, the pressure sensor 10 displays pressure, and when the pressure reaches F0, the time from t1 to t0 is maintained, and at this time, the thickness of the lithium ion battery is detected by the displacement probe 20 and the limiting block 103.
Then, the lithium ion battery 100 is continuously squeezed by the driving of the servo motor 3, when the pressure reaches F1, the time t2-t3 is kept, at this time, the second probe 30 is in contact with the positive pole of the lithium ion battery 100, the second probe 30 is electrified to the shell of the lithium ion battery 100 through the high voltage output by the insulation and voltage resistance test equipment, at this time, the current lines on the side conducting voltage block 102, the upper conducting pressure block 201 and the lower conducting pressure block 101 are connected with the insulation and voltage resistance test equipment to form a loop, and therefore the leakage current condition of the lithium ion battery 100 membrane is displayed through the insulation and voltage resistance test equipment.
The lithium ion battery performance detection device of the embodiment can not only measure the thickness of the lithium ion battery 100, but also test the insulation and voltage resistance of the lithium ion battery 100, is simple in operation, can reduce the manufacturing cost of equipment and save the occupied space of the equipment, can shorten the beat, improves the production efficiency, and has a better using effect.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A lithium ion battery performance detection device is characterized by comprising:
a bottom support (1) that constitutes a support for the bottom surface of the lithium ion battery (100) in the thickness direction;
the pressing device is arranged vertically above the bottom support (1) and is used for applying different testing pressures to the top surface of the lithium ion battery (100) in the thickness direction on the bottom support (1) in a controllable manner;
a thickness measuring device configured to detect a thickness value of the lithium ion battery (100) when the pressing device presses down the lithium ion battery (100) at a test pressure;
the conductive pressing block is arranged on the circumferential side face of at least one of the lithium ion batteries (100), and when the pressing device presses the lithium ion batteries (100) under a certain test pressure, the conductive pressing block is in contact with the lithium ion batteries (100) so as to be electrically connected with a power supply device for providing test voltage for the lithium ion batteries (100) to form a current detection loop.
2. The lithium ion battery performance detection device of claim 1, wherein: the conductive compact includes an upper conductive compact (201) and a lower conductive compact (101) located in a thickness direction of the lithium ion battery (100), and side conductive compacts (102) located in a height direction and a width direction of the lithium ion battery (100).
3. The lithium ion battery performance detection device of claim 2, wherein: the lower conductive pressing block (101) is fixedly arranged on the bottom support (1) to form a support for the bottom surface of the lithium ion battery (100) in the thickness direction.
4. The lithium ion battery performance detection device of claim 2, wherein: the upper conductive pressing block (201) is fixed on the pressing device to follow the pressing device, so that the top surface of the lithium ion battery (100) in the thickness direction is pressed downwards.
5. The lithium ion battery performance detection device of claim 2, wherein: the side conductive compact (102) may be driven closer to or farther from the lithium ion battery (100).
6. The lithium ion battery performance detection device according to any one of claims 1 to 5, characterized in that: the pressing device comprises a power device and an upper insulating pressing plate (2) which is used for bearing the output power of the power device to ascend or descend.
7. The lithium ion battery performance detection device of claim 6, wherein: the power device is a servo motor (3), and the servo motor (3) is connected to the upper insulating pressing plate (2) through a screw (4); and a pressure sensor (10) for detecting the downward pressure of the upper insulating pressing plate (2) is arranged on the screw rod (4).
8. The lithium ion battery performance detection device of claim 6, wherein: the thickness measuring device comprises a displacement probe (20) which follows the upper insulating pressing plate (2), and a limiting block (103) which is fixed on the bottom support (1) and corresponds to the displacement probe (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022823194.9U CN213750258U (en) | 2020-11-30 | 2020-11-30 | Lithium ion battery performance detection device |
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| CN202022823194.9U CN213750258U (en) | 2020-11-30 | 2020-11-30 | Lithium ion battery performance detection device |
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| CN213750258U true CN213750258U (en) | 2021-07-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407170A (en) * | 2022-11-03 | 2022-11-29 | 烟台台芯电子科技有限公司 | Insulation test tool for IGBT module |
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- 2020-11-30 CN CN202022823194.9U patent/CN213750258U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407170A (en) * | 2022-11-03 | 2022-11-29 | 烟台台芯电子科技有限公司 | Insulation test tool for IGBT module |
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