CN219799697U - Battery needling test fixture - Google Patents
Battery needling test fixture Download PDFInfo
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- CN219799697U CN219799697U CN202321366659.XU CN202321366659U CN219799697U CN 219799697 U CN219799697 U CN 219799697U CN 202321366659 U CN202321366659 U CN 202321366659U CN 219799697 U CN219799697 U CN 219799697U
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- battery
- cover plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery needling test fixture, which comprises a pressing device, a needling device and a needling depth adjusting device, wherein the pressing device is used for pressing the battery needling test fixture; the compressing device is used for compressing the battery to be tested; the needling device is used for vertically puncturing the battery to be tested; the needling depth adjusting device is used for adjusting the needling depth of the battery to be tested; the needling depth adjusting device comprises a battery cover plate, a lower bottom plate and a plurality of limit posts, wherein the battery cover plate and the lower bottom plate are distributed at intervals from top to bottom; the limiting columns are arranged at the top of the battery cover plate; the same number of gaskets are sleeved on each limit post; the top of the lower bottom plate is used for placing a battery to be tested; the compressing device compresses the battery to be tested through the battery cover plate. According to the utility model, the needling stroke height can be adjusted according to the needling depth requirements of different batteries, so that the accurate control of the needling depth is realized, and the accuracy and reliability of the needling test result of the batteries are ensured.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery needling test fixture.
Background
The lithium ion battery has the advantages of high specific energy, multiple recycling times, long storage time and the like, is widely applied to portable electronic equipment (such as mobile phones, digital cameras and portable computers) and is widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the requirement on the safety performance of the lithium ion battery is higher and higher.
At present, in the test for evaluating the safety performance of the consumer lithium ion battery, the needling test is the most severe test method for testing the safety performance of the lithium battery, and can effectively detect the safety state of the lithium battery when internal short circuit occurs.
However, when the conventional lithium battery needling equipment is used for needling or half-needling a battery, the problem that the penetration depth is uncontrollable exists, and the accuracy and reliability of the battery needling test result are seriously affected.
Disclosure of Invention
The utility model aims at solving the technical defects existing in the prior art and provides a battery needling test fixture.
Therefore, the utility model provides a battery needling test fixture, which comprises a pressing device, a needling device and a needling depth adjusting device;
the compressing device is used for compressing the battery to be tested;
the needling device is used for vertically puncturing the battery to be tested;
the needling depth adjusting device is used for adjusting the needling depth of the battery to be tested;
the needling depth adjusting device comprises a battery cover plate, a lower bottom plate and a plurality of limit posts, wherein the battery cover plate and the lower bottom plate are distributed at intervals from top to bottom;
the limiting columns are arranged at the top of the battery cover plate;
the same number of gaskets are sleeved on each limit post;
the top of the lower bottom plate is used for placing a battery to be tested;
the compressing device compresses the battery to be tested through the battery cover plate.
Compared with the prior art, the technical scheme provided by the utility model has the advantages that the structure design is scientific, the problem that the needling depth is uncontrollable in the needling process of the battery can be solved, the needling stroke height can be adjusted according to the needling depth requirements of different batteries, the accurate control of the needling depth is realized, the accuracy and the reliability of the needling test result of the battery are effectively ensured, and the battery needling test tool has great practical significance.
Drawings
Fig. 1 is a schematic perspective view of a battery needling test fixture according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, the utility model provides a battery needling test fixture, which comprises a pressing device, a needling device and a needling depth adjusting device;
the compressing device is used for compressing the battery to be tested;
the needling device is used for vertically puncturing the battery to be tested;
the needling depth adjusting device is used for adjusting the needling depth of the battery to be tested;
the needling depth adjusting device comprises a battery cover plate 6, a lower bottom plate 1 and a plurality of limit posts 7 which are distributed at intervals from top to bottom;
the limiting posts 7 are arranged on the top of the battery cover plate 6;
the same number of gaskets 11 are sleeved on each limit post 7;
the top of the lower bottom plate 1 is used for placing a battery to be tested;
the compressing device compresses the battery to be tested through the battery cover plate 6.
In the present utility model, the pressing device comprises an upper cover plate 2, a first spring 5 and a second spring 12;
the left end and the right end of the bottom of the upper cover plate 2 are respectively connected with the top of the lower bottom plate 1 through a first spring 5;
the bottom middle section of the upper cover plate 2 is connected with the top of the battery cover plate 6 through a plurality of second springs 12.
Preferably, two first springs 5 are respectively arranged at the middle sections of the left and right ends of the bottom of the upper cover plate 2;
the two first springs 5 are arranged axisymmetrically.
Preferably, the plurality of second springs 12 are axisymmetrically arranged.
Further, the battery cover plate 6 is provided with one first spring passing opening groove 13 at a position corresponding to each first spring 5, respectively;
each first spring passes through the open slot 13 and vertically passes through one first spring 5;
the first spring is in clearance fit with the first spring 5 through the open slot 13.
Further, the top of the lower bottom plate 1 is provided with a first spring positioning pin at a position corresponding to each first spring 5;
a first spring 5 is sleeved outside each first spring positioning pin.
Preferably, the first spring positioning pin is fixedly connected with the lower bottom plate 1 through a fastening bolt;
preferably, the top of the lower bottom plate 1 is provided with a first spring bottom accommodating concave hole at a position corresponding to each first spring positioning pin;
a first spring positioning pin is respectively arranged at the center of each first spring bottom accommodating concave hole;
the first spring bottom accommodating concave hole is in clearance fit with the first spring 5.
It should be noted that, for the tool, the stability and speed control of the tool in the pressing process are guaranteed through the accommodating concave holes at the bottom of the first springs and the arrangement of the first springs.
Further, the top of the battery cover plate 6 is provided with a second spring positioning pin at a position corresponding to each second spring 12;
a second spring 12 is respectively sleeved outside each second spring positioning pin.
Preferably, the second spring positioning pin is fixedly connected with the battery cover plate 6 through a fastening bolt;
preferably, the top of the battery cover plate 6 is provided with a second spring bottom accommodating concave hole at a position corresponding to each second spring positioning pin;
a second spring positioning pin is respectively arranged at the center of each second spring bottom accommodating concave hole;
the second spring bottom receiving recess is in clearance fit with the second spring 12.
Preferably, the first springs 5 are light load springs and the second springs 12 are medium load springs.
In the utility model, four corners of the top of the lower bottom plate 1 are fixedly connected with four corners of the bottom of the upper cover plate 2 through a guide post 3 respectively;
the battery cover plate 6 is provided with a battery cover plate through hole at a position corresponding to each guide post 3;
each battery cover plate through hole vertically penetrates through one guide post 3;
the through hole of the battery cover plate is in clearance fit with the guide post 3.
Further, the guide post 3 is fixedly connected with the lower base plate 1 through a fastening bolt so as to ensure the position fixing between the two components.
Further, the upper cover plate 2 is fixedly provided with a first guide sleeve 41 at a position corresponding to each guide post 3;
each first guide sleeve 41 is directly penetrated through one guide post 3;
the first guide sleeve 41 is in clearance fit with the guide post 3.
Further, the battery cover plate 6 is fixedly provided with a second guide sleeve 42 at a corresponding position of each guide post 3;
each second guide sleeve 42 is directly penetrated through one guide post 3;
the second guide sleeve 42 is in clearance fit with the guide post 3.
In the present utility model, the needling apparatus, including a needle hub 10 and a lancet 9;
the needle 9 is arranged at the bottom of the needle holder 10.
Further, a needle seat 10 is arranged at the bottom of the upper cover plate 2;
the battery cover plate 6 is provided with a puncture needle through hole 14 at a position corresponding to the puncture needle 9;
a lancet through hole 14 vertically penetrating through the lancet 9;
the needle through hole 14 is in clearance fit with the needle 9.
The needle stand 10 can fix the downward vertical position of the puncture needle 9 and can also perform the operation of the puncture test at different positions on the battery by adjusting the horizontal position of the puncture needle.
Preferably, a lancet mounting hole is provided at the center of the hub 10;
the lancet 9 is disposed in the lancet mounting hole.
Preferably, the tip of the spike 9 has an external thread;
the external thread at the top end of the puncture needle 9 is fixedly connected with the puncture needle mounting hole through threads.
It should be noted that, the lancet 9 may be of different specifications, and the disassembly is simple, and the fixing of the lancet in the horizontal and vertical directions is facilitated.
Preferably, the lower end initial position of the lancet 9 (i.e., the initial position before the needling test is not started) is flush with the bottom surface (i.e., the lower side surface) of the battery cover plate 6.
Preferably, the projection of the lancet 9 on the horizontal plane is located at the center of the symmetrical pattern formed by the line connecting the center points of the projections of the plurality of second springs 12 (for example, four) on the horizontal plane.
Further, the needle seat 10 is respectively provided with a limiting avoidance through hole at a position corresponding to each limiting column 7;
each limit avoiding through hole is used for penetrating through one limit post 7 when the upper cover plate 2 moves downwards;
the limiting avoidance through hole is in clearance fit with the limiting post 7.
Further, an insulating battery backing plate 8 is arranged on the top of the lower bottom plate 1;
the top of the battery pad 8 is placed with the battery to be tested.
Preferably, the top surface of the battery backing plate 8 is provided with an insulating coating;
the battery pad 8 is fixed to the lower plate 1 by bolts.
It should be noted that, the presence of the insulating coating is beneficial to the short circuit phenomenon caused by the contact of the battery with the lower bottom plate 1 in the process of moving and pressing the tool, so as to avoid the influence of an external device on the safety of the battery.
Preferably, the battery pad 8 is provided with a needling position calibration hole 15 at a position corresponding to the needle through hole 14;
the needle position calibration hole 15 is in clearance fit with the lancet 9.
Preferably, the needle holder 10 is fixedly connected with the bottom of the upper cover plate 2 by fastening bolts.
In the utility model, the upper cover plate 2 is respectively provided with a limit column jack at a position corresponding to each limit column 7;
and the limit column 7 is used for correspondingly inserting the top end of the limit column into the limit column jack when the upper cover plate 2 moves downwards. Therefore, avoidance of the limit post can be achieved.
It should be noted that, the spacing post 7 can correspondingly place the gasket of different specifications, quantity and thickness according to the test requirement of different specification batteries, can effectively restrict the stroke of pjncture needle, and the gasket is the standard piece simultaneously, need not extra processing.
In the utility model, each limit post 7 is sleeved with gaskets 11 with the same number and thickness.
In the utility model, the top of the upper cover plate 2 is connected with a driving device;
and driving means for driving the upper cover plate 2 to move up and down in the vertical direction.
Further, the driving device is a cylinder.
Preferably, a cylinder connecting plate arranged on an output shaft of the cylinder is connected with the top center position of the upper cover plate 2.
In order to more clearly understand the technical scheme of the present utility model, the working principle of the present utility model will be described below with reference to specific embodiments.
Example 1
Taking the model 545968 of a polymer battery cell as an example, the length of the battery cell is 68mm, the width of the battery cell is 59mm, and the thickness of the battery cell is 5.4mm;
the whole needling stroke of the utility model is 10mm, namely the maximum needling depth is 10mm when the spacer 11 is not arranged on the limiting column 7;
when the thickness of the puncture cell is required to be half-needled (the needling depth is 2.7 mm), the specific operation is as follows: on each of the stopper posts 7 is placed a spacer (comprising a combination of 1 spacer 6mm, 1.2mm,1 spacer 0.1 mm) having a total thickness of 7.3mm, and the battery is punched to a depth of 10-7.3=2.7 mm, thereby satisfying the punching requirement.
When the thickness of the puncture cell is required to be full-needle (the needle penetration depth is 5.4 mm), the specific operation is as follows: on each of the stopper posts 7, a spacer (including a combination of two spacers having a thickness of 4.6mm, one of 0.5mm and one of 0.1 mm) having a total thickness of 4.6mm is placed, and the battery is punched to a depth of 10-4.6=5.4 mm, thereby satisfying the punching demand.
When the thickness requirement of the puncture cell is 1/3 of the needling (the needling depth is 1.8 mm), the specific operation is as follows: a spacer (comprising a combination of 1-8 mm and two 0.1mm thick spacers) with a total thickness of 8.2mm is placed on each limit post 7, and the battery needling depth is 10-8.2=1.8 mm, so that the needling requirement is met.
After the battery is penetrated, the staff records the data change of the battery in detail, and the battery is processed after the temperature is restored to normal temperature.
In the utility model, when the puncture test is carried out, the puncture needle 9 is vertically penetrated into the battery to be tested in a normal temperature state, different depths are penetrated according to different test requirements, then the battery is placed for a preset time (for example, 6 hours or other preset time), and if the battery does not explode or catch fire, the battery passes the test and is qualified.
Compared with the prior art, the battery needling test tool provided by the utility model has the following beneficial effects:
1. the tool disclosed by the utility model can be used for adjusting the thickness and the number of different gaskets on the limiting column according to the needling depth requirement of a specific battery, so that the stroke height of a needling needle is adjusted, the needling depth is accurately controlled, and the testing reliability is high.
2. The device has good practicability, can be used for rapidly performing needling test, saves test resources, can rapidly verify the safety of the battery, is favorable for further collecting relevant data such as voltage and temperature in the test process, is favorable for accurately and controllably performing internal test analysis, and reduces the development period of the battery.
In summary, compared with the prior art, the battery needling test fixture provided by the utility model has scientific structural design, can overcome the problem of uncontrollable needling depth in the battery needling process, can adjust the needling stroke height according to the needling depth requirements of different batteries, realizes accurate control of needling depth, effectively ensures the accuracy and reliability of battery needling test results, and has great practical significance.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. The battery needling test fixture is characterized by comprising a pressing device, a needling device and a needling depth adjusting device;
the compressing device is used for compressing the battery to be tested;
the needling device is used for vertically puncturing the battery to be tested;
the needling depth adjusting device is used for adjusting the needling depth of the battery to be tested;
the needling depth adjusting device comprises a battery cover plate (6) and a lower bottom plate (1) which are distributed at intervals from top to bottom, and a plurality of limit posts (7);
the limiting posts (7) are arranged at the top of the battery cover plate (6);
the limit posts (7) are sleeved with gaskets (11) with the same number;
the top of the lower bottom plate (1) is used for placing a battery to be tested;
the compressing device compresses the battery to be tested through the battery cover plate (6).
2. The battery needling test fixture of claim 1, wherein the compaction device comprises an upper cover plate (2), a first spring (5) and a second spring (12);
the left end and the right end of the bottom of the upper cover plate (2) are respectively connected with the top of the lower bottom plate (1) through a first spring (5);
the middle section of the bottom of the upper cover plate (2) is connected with the top of the battery cover plate (6) through a plurality of second springs (12).
3. The battery needling test fixture according to claim 2, wherein the two first springs (5) are respectively arranged at the middle sections of the left end and the right end of the bottom of the upper cover plate (2);
the two first springs (5) are axisymmetrically arranged;
and/or the number of the groups of groups,
the battery cover plate (6) is provided with a first spring passing opening groove (13) at a position corresponding to each first spring (5);
each first spring passes through the open slot (13) and vertically passes through one first spring (5);
the first spring is in clearance fit with the first spring (5) through the open slot (13);
and/or the number of the groups of groups,
the top of the lower bottom plate (1) is provided with a first spring positioning pin at a position corresponding to each first spring (5);
a first spring (5) is sleeved outside each first spring positioning pin;
and/or the number of the groups of groups,
the top of the lower bottom plate (1) is provided with a first spring bottom accommodating concave hole at a position corresponding to each first spring positioning pin;
a first spring positioning pin is respectively arranged at the center of each first spring bottom accommodating concave hole;
the bottom containing concave hole of the first spring is in clearance fit with the first spring (5).
4. The battery needling test fixture according to claim 2, characterized in that the top of the battery cover plate (6) is provided with a second spring positioning pin at a position corresponding to each second spring (12);
a second spring (12) is sleeved outside each second spring positioning pin;
and/or the number of the groups of groups,
the top of the battery cover plate (6) is provided with a second spring bottom accommodating concave hole at a position corresponding to each second spring positioning pin;
a second spring positioning pin is respectively arranged at the center of each second spring bottom accommodating concave hole;
the bottom containing concave hole of the second spring is in clearance fit with the second spring (12).
5. The battery needling test fixture according to claim 1, wherein the top four corners of the bottom plate (1) are fixedly connected with the bottom four corners of the upper cover plate (2) through a guide post (3) respectively;
the battery cover plate (6) is provided with a battery cover plate through hole at a position corresponding to each guide post (3);
each battery cover plate through hole vertically penetrates through one guide post (3);
the through hole of the battery cover plate is in clearance fit with the guide post (3).
6. The battery needling test fixture according to claim 5, wherein the upper cover plate (2) is fixedly provided with a first guide sleeve (41) at a position corresponding to each guide post (3);
each first guide sleeve (41) is directly penetrated through one guide post (3);
the first guide sleeve (41) is in clearance fit with the guide post (3);
and/or the number of the groups of groups,
the battery cover plate (6) is fixedly provided with a second guide sleeve (42) at the corresponding position of each guide post (3);
each second guide sleeve (42) is directly penetrated through one guide post (3);
the second guide sleeve (42) is in clearance fit with the guide post (3).
7. The battery needling test fixture of claim 1, characterized in that the needling device comprises a needle stand (10) and a needle (9);
the puncture needle (9) is arranged at the bottom of the needle seat (10).
8. The battery needling test fixture according to claim 7, characterized in that the needle seat (10) is arranged at the bottom of the upper cover plate (2);
the battery cover plate (6) is provided with a puncture needle through hole (14) at a position corresponding to the puncture needle (9);
a puncture needle through hole (14) vertically penetrates through the puncture needle (9);
the puncture needle through hole (14) is in clearance fit with the puncture needle (9).
9. The battery needling test fixture of claim 7, wherein a needling needle mounting hole is provided in the center of the needle holder (10);
the puncture needle (9) is arranged in the puncture needle mounting hole;
the top end of the puncture needle (9) is provided with external threads;
the external thread at the top end of the pricking pin (9) is fixedly connected with the thread of the pricking pin mounting hole;
and/or the number of the groups of groups,
the initial position of the lower end of the pricking pin (9) is flush with the bottom surface of the battery cover plate (6).
10. The battery needling test fixture according to claim 7, characterized in that the needle stand (10) is respectively provided with a limiting avoidance through hole at a position corresponding to each limiting column (7);
each limit avoiding through hole is used for penetrating through one limit column (7) when the upper cover plate (2) moves downwards;
the limit avoidance through hole is in clearance fit with the limit post (7);
and/or the number of the groups of groups,
an insulated battery backing plate (8) is arranged at the top of the lower bottom plate (1);
a battery to be tested is placed on the top of the battery backing plate (8);
the battery backing plate (8) is provided with a needling position calibration hole (15) at a position corresponding to the needling through hole (14);
the needling position calibration hole (15) is in clearance fit with the needling needle (9);
and/or the number of the groups of groups,
the upper cover plate (2) is provided with a limit column jack at a position corresponding to each limit column (7);
the limiting column (7) is used for correspondingly inserting the top end of the upper cover plate (2) into the limiting column jack when the upper cover plate moves downwards;
and/or the number of the groups of groups,
the top of the upper cover plate (2) is connected with a driving device;
and the driving device is used for driving the upper cover plate (2) to move up and down in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366659.XU CN219799697U (en) | 2023-05-31 | 2023-05-31 | Battery needling test fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366659.XU CN219799697U (en) | 2023-05-31 | 2023-05-31 | Battery needling test fixture |
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| Publication Number | Publication Date |
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| CN219799697U true CN219799697U (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321366659.XU Active CN219799697U (en) | 2023-05-31 | 2023-05-31 | Battery needling test fixture |
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| CN (1) | CN219799697U (en) |
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- 2023-05-31 CN CN202321366659.XU patent/CN219799697U/en active Active
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