CN210863428U - Battery hardness detection device - Google Patents
Battery hardness detection device Download PDFInfo
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- CN210863428U CN210863428U CN201921476213.6U CN201921476213U CN210863428U CN 210863428 U CN210863428 U CN 210863428U CN 201921476213 U CN201921476213 U CN 201921476213U CN 210863428 U CN210863428 U CN 210863428U
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Abstract
The utility model provides a battery hardness detection device. This battery hardness detection device includes: the supporting mechanism is used for fixing the edge part of the battery cell and suspending the central part of the battery cell; and the detection mechanism is used for applying pressure to the central part of the battery cell and enabling the central part to generate deformation displacement, and the detection mechanism can detect the deformation displacement of the central part and determine the hardness of the battery cell. Battery hardness detection device, edge portion through to electric core fixes to make electric core central part unsettled, when detection mechanism applyed certain pressure to electric core central part, the deformation displacement that electric core central part takes place is more obvious, thereby can be according to the quick hardness of accurately confirming electric core of the deformation displacement volume of electric core central part, the device can assess electric core hardness betterly, improved the accuracy, the accuracy and the detection efficiency that detect, improved the production efficiency of product.
Description
Technical Field
The utility model belongs to the technical field of the battery and specifically relates to a battery hardness detection device is related to.
Background
At present, lithium ion batteries are widely used in video cameras, mobile phones, notebook computers, electric vehicles and other devices due to their advantages of stable voltage, high capacity, high energy density, long cycle life, environmental friendliness and the like. With the trend of light and thin electronic devices, lithium batteries are also increasingly made thinner. The hardness of the lithium battery is easy to decrease along with the reduction of the thickness of the lithium battery, and the hardness of the lithium battery is an important factor influencing the size, the overall appearance and the like of the lithium battery, so that the hardness of the lithium battery needs to be accurately detected and monitored in the production and manufacturing process of the lithium battery. At present, whether the hardness of the lithium battery is qualified or not is generally detected through manual work, misjudgment and missing judgment are easy to occur when the hardness of the lithium battery is detected manually, the detection accuracy is not high, the detection efficiency is low, and further the production efficiency and the service performance of the lithium battery are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a battery hardness detection device, this battery hardness detection device can confirm the hardness of electric core fast accurately, can improve the accuracy and the detection efficiency that detect, and then can improve production efficiency.
According to the utility model discloses battery hardness detection device includes: the supporting mechanism is used for fixing the edge part of the battery cell and suspending the central part of the battery cell; and the detection mechanism is used for applying pressure to the central part of the battery cell and enabling the central part to generate deformation displacement, and the detection mechanism can detect the deformation displacement of the central part and determine the hardness of the battery cell.
Battery hardness detection device, edge portion through to electric core fixes, makes the central part of electric core unsettled, when detection mechanism applyed pressure to electric core central part, the deformation displacement that electric core central part takes place is more obvious to can be according to the quick hardness of accurately confirming electric core of the deformation displacement volume of electric core central part, the device can assess electric core hardness betterly, can improve accuracy, the accuracy and the detection efficiency that detect, and then improve the production efficiency of product.
In some embodiments of the present invention, the support mechanism comprises: at least one support member for fixing different positions of the edge portion of the cell; the supporting piece comprises a base and a pressing plate which are oppositely arranged, and the edge part of the battery cell can be fixed between the base and the pressing plate.
Optionally, the position of the support is adjustable.
Optionally, the base further comprises: a base; the support table is arranged on the base, a concave part is arranged on one side, away from the base, of the support table, and the concave part is used for being matched with the edge part of the battery cell.
Further, the electric core includes the electric core body, encircles the plastic envelope portion that the electric core body set up and follow the utmost point ear that the plastic envelope portion extends, the electric core the edge part include the plastic envelope portion utmost point ear and a part of electric core body, the depressed part includes first depressed part and second depressed part, the depth of sinking of first depressed part is less than the depth of sinking of second depressed part, first depressed part be used for with utmost point ear with the cooperation of plastic envelope portion, the second depressed part be used for with the cooperation of electric core body.
Optionally, the pressing plate can move in a direction close to or away from the base, and one side of the pressing plate close to the base is provided with an elastic block.
Further, the supporting mechanism further comprises a driving unit, the driving unit is used for driving the pressing plate to move, and the driving unit comprises at least one of a driving air cylinder and a driving motor.
Further, when the pressing plate moves towards the direction close to the base and is in contact with the battery cell, the pressure applied by the pressing plate to the battery cell is 0.3MPa to 0.6 MPa.
In some embodiments of the present invention, the detecting mechanism includes a pressure tester and a displacement sensor, the pressure tester includes a testing column, the testing column can move along a direction close to or away from the electrical core, when the testing column contacts the electrical core, pressure is applied to the central portion of the electrical core, and the central portion is deformed and displaced; the displacement sensor is used for detecting the deformation displacement of the central part.
Optionally, when the test column moves to a direction close to the battery cell and contacts with the battery cell, the pressure applied by the test column to the central part of the battery cell is 10N to 40N.
Drawings
Fig. 1 is a schematic structural diagram of a battery hardness detection apparatus according to an embodiment of the present invention when detecting a hardness of a battery cell;
fig. 2 is a schematic structural diagram of an electrical core according to an embodiment of the present invention;
fig. 3 is a schematic view of a part of a structure of a battery hardness detecting device according to an embodiment of the present invention;
fig. 4 is a schematic view of a part of the structure of a battery hardness testing apparatus according to an embodiment of the present invention;
fig. 5 is a data curve diagram of the deformation displacement of the battery cell according to the embodiment of the present invention; and
figure 6 is the comparison the data curve graph of deformation displacement volume along with the pressure size change of electricity core.
Reference numerals:
the battery hardness detection device 100, the support 1, the base 10, the pressure plate 11, the elastic block 111, the base 101, the support platform 102, the first recess 121, and the second recess 122; the device comprises a pressure tester 20, a test column 201, a battery cell 50, a battery cell body 51 and a plastic package part 52; and a tab 53.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "edge portion", "central portion", "depth", "width", "length", "thickness", "one side", "bottom", "relative", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
A battery hardness detection apparatus according to an embodiment of the present invention is described below with reference to fig. 1 to 4. As shown in fig. 1 to 4, a battery hardness detection apparatus 100 according to an embodiment of the present invention includes: a support mechanism and a detection mechanism, wherein the support mechanism is used for fixing the edge portion of the battery cell 50 and suspending the central portion of the battery cell 50; the detection mechanism is configured to apply pressure to the central portion of the battery cell 50, and cause the central portion to deform and displace, and the detection mechanism is configured to detect the deformation and displacement of the central portion and determine the hardness of the battery cell 50.
According to the utility model discloses a battery hardness detection device 100, at first utilize supporting mechanism to fix the edge position of electric core 50, and make electric core 50 central part unsettled, then utilize detection mechanism to exert certain pressure to electric core 50's central part, at this moment, more obvious deformation displacement can take place for electric core 50's central part under detection mechanism's pressure effect, and utilize detection mechanism to detect out the deformation displacement volume of electric core 50 central part, according to the deformation displacement volume of electric core 50 central part alright with the hardness of confirming electric core 50 fast accurately. The device can evaluate the hardness of the battery cell well, can improve the accuracy, precision and detection efficiency of detection, and further improve the production efficiency.
The "central portion" of the cell described above refers to the central region of the cell and the region near the center of the cell, and the "edge portion" refers to the peripheral region of the cell, i.e., the region of the cell away from the center of the cell. The "deformation displacement" refers to a position of the center portion of the cell after being pressed deviates from a position before being pressed due to a deformation of the center portion of the cell along the pressing direction under the pressure of the detection mechanism, and a change in the position of the center portion of the cell before and after being pressed along the pressing direction is the "deformation displacement" of the center portion of the cell.
In some embodiments of the present invention, referring to fig. 1, the support mechanism may include: at least one support 1, the support 1 may be used to fix different positions of the edge portion of the battery cell 50. Specifically, the support 1 may include a base 10 and a pressing plate 11 disposed opposite to each other, and an edge portion of the battery cell 50 may be fixed between the base 10 and the pressing plate 11. Specifically, referring to fig. 1, the supporting mechanism may include two oppositely disposed supporting members 1, and the two oppositely disposed supporting members 1 may fix two oppositely disposed side edges of the battery cell 50, so as to fix an edge portion of the battery cell 50 well and suspend a central portion of the battery cell 50. Specifically, the position of the supporting member 1 is adjustable, that is, the position of the supporting member 1 can be adjusted according to the size, shape and the like of the battery cell 50 to be detected, for example, referring to fig. 1, two oppositely disposed supporting members 1 can be close to or away from each other so as to better fix battery cells with different sizes. Therefore, the battery hardness detection device 100 can fix and detect battery cores of different sizes, and has a wide application range.
Specifically, referring to fig. 1 and 3, the base 10 may include a base 101 and a supporting stage 102, the supporting stage 102 is disposed on the base 101, and a side of the supporting stage 102 away from the base 101 has a recess (refer to a first recess 121 and a second recess 122 shown in fig. 3), which may be engaged with an edge portion of the battery cell 50. From this, this supporting mechanism can fix electric core 50 betterly, prevents that detection mechanism from taking place to rock etc. when exerting pressure to the central part of electric core 50, electric core 50 influences the accurate measurement to the deformation displacement volume of electric core 50 central part. Specifically, the concrete shape of depressed part can design according to the electric core shape of difference to the cooperation electric core of different shapes and size is fixed better with it, improves the detection efficiency and the rate of accuracy of electric core hardness.
Specifically, referring to fig. 1 and fig. 2, the battery cell 50 may include a battery cell body 51, a plastic package portion 52 disposed around the battery cell body 51, and a tab 53 extending from the plastic package portion 52, and an edge portion of the battery cell 50 may include the plastic package portion 52, the tab 53, and a portion of the battery cell body 51 (refer to a portion defined by a dashed line frame in fig. 2). Specifically, referring to fig. 3, the recess may include a first recess 121 and a second recess 122, the recess depth of the first recess 121 is smaller than the recess depth of the second recess 122, the first recess 121 may be configured to cooperate with the tab 53 and the plastic package portion 52, and the second recess 122 may be configured to cooperate with the cell body 51. From this, this depressed part can be better cooperation electric core 50's shape, fixes electric core 50 betterly, guarantees that electric core 50's position does not take place the skew in the testing process, further improves the detection efficiency and the rate of accuracy of electric core hardness.
Specifically, referring to fig. 1, the pressing plate 11 is movable in a direction approaching or moving away from the base 10, so that when the pressing plate 11 moves in a direction approaching the base 10, the battery cell 50 can be easily fixed. Specifically, when the pressing plate 11 moves toward the base 10 and contacts the battery cell 50, the pressure applied by the pressing plate 11 to the battery cell 50 may be 0.3MPa to 0.6 MPa. Therefore, when the pressure intensity is within the above pressure intensity range, the pressing plate 11 can be better matched with the base 10 to fix the electric core 50 to be detected, so that the electric core 50 is ensured not to shake and the like in the detection process, and the detection of the deformation displacement of the central part of the electric core 50 by the detection mechanism is prevented from being interfered; and can avoid causing damage to the surface of the battery cell 50 better, influence the appearance and the service performance of the battery cell 50 after detection. Specifically, referring to fig. 4, the side of the pressing plate 11 close to the base 10 may have an elastic block 111, for example, the elastic block 111 may be formed of soft foam. Therefore, when the pressing plate 11 is close to and pressed on the surface of the battery cell 50 to be detected, the surface of the battery cell 50 cannot be damaged, so that serious indentation on the surface of the battery cell 50 can be further avoided, and the product quality and the product yield are improved.
Specifically, the supporting mechanism may include a driving unit (not shown in the drawings) for driving the platen 11 to move, and the driving unit may include at least one of a driving cylinder and a driving motor. Therefore, the automation degree of the battery cell hardness detection can be improved, and the accuracy and the detection efficiency of the detection are further improved.
In some embodiments of the present invention, referring to fig. 1, the detecting mechanism may include a pressure tester 20 and a displacement sensor (not shown in the figure), the pressure tester 20 may include a testing column 201, the testing column 201 may move along a direction close to or away from the electric core 50, when the testing column 201 contacts the electric core 50, the pressure may be applied to the central portion of the electric core 50, and the central portion is made to generate a deformation displacement, and the displacement sensor may detect the deformation displacement of the central portion. From this, more obvious deformation displacement can take place for the central part of electric core 50 when receiving the pressure that test column 201 applyed, and more obvious deformation displacement volume that the central part of electric core 50 took place can be taken notes to displacement sensor to can be according to the deformation displacement volume and accurately confirm the hardness of electric core 50 fast.
Specifically, when the test column 201 is moved in a direction close to the battery cell 50 and is brought into contact with the battery cell 50, the pressure applied by the test column 201 to the central portion of the battery cell 50 may be 10N to 40N. Therefore, when the pressure is within the range, the central part of the battery cell 50 can generate obvious deformation displacement, the battery cell 50 is not easily damaged, the hardness of the battery cell 50 can be quickly and accurately determined according to the obvious deformation displacement generated at the central part of the battery cell 50, the detection efficiency and the detection accuracy of the battery cell hardness are further improved, and the production efficiency of products is further improved.
Specifically, utilize and be according to the utility model discloses when battery hardness detection device 100 carried out battery hardness and detect, can preset electric core deformation displacement volume standard value under certain pressure (promptly electric core deformation displacement under certain pressure) in advanceWhen the amount reaches the standard value or less, the hardness of the cell is acceptable), for example, the standard value d of the amount of deformation displacement of the battery under a pressure of 10N may be set in advance0Subsequently, when the hardness of the battery cell to be detected is detected, the detection mechanism can apply 10N pressure to the battery cell to be detected, and detect that the deformation displacement of the battery cell to be detected is d1The detection means passing a comparison d1And d0Can simply and conveniently judge whether the hardness of the cell to be detected is qualified, for example, the deformation displacement of the cell to be detected is d1D is the deformation displacement of the standard battery0And then, the hardness of the battery to be tested can be judged to be qualified. In addition, in the battery hardness detecting device according to the embodiment of the present invention, by fixing the edge portion of the battery cell and suspending the central portion of the battery cell, when a certain pressure is applied to the central portion of the battery cell, the central portion can generate a relatively obvious deformation displacement (if the battery cell to be tested is directly placed on the platform to be tested (the central portion of the battery cell to be tested is not suspended), under the same pressure, the deformation amount of the battery cell to be tested is relatively small, and it is relatively difficult to determine whether the hardness of the battery cell is qualified), for example, when a detecting mechanism can apply a pressure of 10N to the battery cell to be tested, the deformation displacement amount of the battery cell to be tested can be relatively obvious, so that the hardness of the battery cell can be rapidly and accurately determined according to the relatively obvious deformation displacement amount generated by the central portion of the battery cell, the device can better evaluate the hardness of the battery cell, the production efficiency of the product is improved.
The solution of the present invention will be explained with reference to the following examples. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by manufacturers, and are all conventional products available on the market.
Example 1
Choose A, B, C, D four kinds of sizes all be length for 320mm, the width is 102mm, and thickness is 11.2mm, and hardness difference is different electric core, adopts the utility model discloses a device is fixed the edge of four kinds of different hardness electric cores of A, B, C, D respectively, makes central part unsettled, applys different pressures to the central part of the four kinds of electric cores of A, B, C, D respectively, tests the deformation displacement volume of the four kinds of different hardness electric cores of A, B, C, D, obtains the data curve graph that the deformation displacement volume of the four kinds of different hardness electric cores of A, B, C, D of fig. 5 changes along with pressure size. As can be seen from fig. 5, when the pressure is 10N, the deformation displacement of the a cell is 0.3mm, the deformation displacement of the B cell is 0.7mm, the deformation displacement of the C cell is 1.5mm, and the deformation displacement of the D cell is 2.3 mm; when the pressure is 15N, the deformation displacement of the cell A is 0.4mm, the deformation displacement of the cell B is 0.9mm, the deformation displacement of the cell C is 2.1mm, and the deformation displacement of the cell D is 2.8 mm; when the pressure is 20N, the deformation displacement of A electricity core is 0.5mm, the deformation displacement of B electricity core is 1.2mm, the deformation displacement of C electricity core is 2.5mm, the deformation displacement of D electricity core is 3.3 mm.
Comparative example 1
Specifically, the edges of the A, B, C, D cells with four different hardness are not fixed, that is, the edges of the cells are not fixed by using the supporting members, different pressures are directly applied to the central parts of the A, B, C, D cells, and the tested data curve graph of the deformation displacement of the A, B, C, D cells with four different hardness changes with the pressure. As can be seen from fig. 6, when the pressure is 10N, the deformation displacement of the a cell is 0.26mm, the deformation displacement of the B cell is 0.75mm, the deformation displacement of the C cell is 0.7mm, and the deformation displacement of the D cell is 1 mm; when the pressure is 15N, the deformation displacement of the cell A is 0.35mm, the deformation displacement of the cell B is 1.28mm, the deformation displacement of the cell C is 1.3mm, and the deformation displacement of the cell D is 1.45 mm; when the pressure is 20N, the deformation displacement of the A battery cell is 0.5mm, the deformation displacement of the B battery cell is 1.56mm, the deformation displacement of the C battery cell is 1.8mm, and the deformation displacement of the D battery cell is 1.9 mm.
From this, when adopting the utility model discloses a during battery hardness detection device, fix the edge of electric core to make electric core central part unsettled, exert certain pressure to electric core central part and can make central part take place more obvious deformation displacement, thereby accurately confirm the hardness of electric core fast according to the more obvious deformation displacement volume that electric core central part takes place, and can quantify electric core hardness index, assess electric core hardness betterly.
In the description herein, references to the description of the term "some embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery hardness detecting device, characterized by comprising:
the supporting mechanism is used for fixing the edge part of the battery cell and suspending the central part of the battery cell; and
the detection mechanism is used for applying pressure to the central part of the battery cell and enabling the central part to generate deformation displacement, and the detection mechanism can detect the deformation displacement of the central part and determine the hardness of the battery cell.
2. The battery hardness detecting device according to claim 1, wherein the support mechanism includes:
at least one support member for fixing different positions of the edge portion of the cell;
the supporting piece comprises a base and a pressing plate which are oppositely arranged, and the edge part of the battery cell can be fixed between the base and the pressing plate.
3. The battery hardness detection device according to claim 2, wherein a position of the support member is adjustable.
4. The battery hardness detecting device according to claim 2, wherein the base further includes:
a base; and
the support table is arranged on the base, a concave part is arranged on one side, away from the base, of the support table, and the concave part is used for being matched with the edge part of the battery cell.
5. The battery hardness detection device according to claim 4, wherein the battery cell includes a battery cell body, a plastic package portion disposed around the battery cell body, and a tab extending from the plastic package portion, the edge portion of the battery cell includes the plastic package portion, the tab, and a portion of the battery cell body,
the depressed part includes first depressed part and second depressed part, the sunken degree of depth of first depressed part is less than the sunken degree of depth of second depressed part, first depressed part be used for with utmost point ear with the cooperation of plastic envelope portion, the second depressed part be used for with the cooperation of electricity core body.
6. The battery hardness testing device according to claim 2, wherein the pressing plate is movable in a direction approaching or moving away from the base, and an elastic block is provided on a side of the pressing plate approaching the base.
7. The battery hardness detecting device according to claim 6, wherein the supporting mechanism further comprises a driving unit for driving the pressure plate to move, the driving unit including at least one of a driving cylinder and a driving motor.
8. The battery hardness detection device according to claim 6, wherein the pressure applied by the pressure plate to the battery cell when the pressure plate moves in a direction close to the base and contacts with the battery cell is 0.3MPa to 0.6 MPa.
9. The battery hardness detection device according to claim 1, wherein the detection mechanism includes a pressure tester and a displacement sensor, the pressure tester includes a test column, the test column is movable in a direction toward or away from the electric core, and when the test column contacts the electric core, pressure is applied to the central portion of the electric core, and the central portion is deformed and displaced;
the displacement sensor is used for detecting the deformation displacement of the central part.
10. The battery hardness detection apparatus according to claim 9, wherein the test column is moved in a direction approaching the battery cell and applies a pressure of 10N to 40N to the central portion of the battery cell when contacting the battery cell.
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| CN201921476213.6U CN210863428U (en) | 2019-09-05 | 2019-09-05 | Battery hardness detection device |
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| CN201921476213.6U CN210863428U (en) | 2019-09-05 | 2019-09-05 | Battery hardness detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218798A (en) * | 2021-03-24 | 2021-08-06 | 万向一二三股份公司 | Device for measuring hardness of soft package battery |
| TWI750886B (en) * | 2020-11-06 | 2021-12-21 | 致茂電子股份有限公司 | Pouch cell battery hardness detection device and detection method thereof |
| CN114184458A (en) * | 2021-11-23 | 2022-03-15 | 江西旭嘉工程质量检测有限公司 | Fire prevention panel intensity detection device for building |
-
2019
- 2019-09-05 CN CN201921476213.6U patent/CN210863428U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI750886B (en) * | 2020-11-06 | 2021-12-21 | 致茂電子股份有限公司 | Pouch cell battery hardness detection device and detection method thereof |
| CN113218798A (en) * | 2021-03-24 | 2021-08-06 | 万向一二三股份公司 | Device for measuring hardness of soft package battery |
| CN114184458A (en) * | 2021-11-23 | 2022-03-15 | 江西旭嘉工程质量检测有限公司 | Fire prevention panel intensity detection device for building |
| CN114184458B (en) * | 2021-11-23 | 2023-12-12 | 广州市创安消防材料有限公司 | Fireproof plate intensity detection device for building |
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