CN218646753U

CN218646753U - Acupuncture test device

Info

Publication number: CN218646753U
Application number: CN202222855521.8U
Authority: CN
Inventors: 王清泉; 陈虎; 朱林培; 祖帅飞
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-17
Anticipated expiration: 2032-10-27

Abstract

The application belongs to the technical field of battery performance test equipment, and provides a needle-punching test device which comprises a first sealing element, a second sealing element and a needle; the first sealing part is provided with a first contact surface, and the first sealing part is connected to a battery pack to be detected; the second sealing element is provided with a second sealing part for the puncture needle to pass through, the second sealing part is provided with a second contact surface, the second sealing element is arranged on the puncture needle in a sealing connection mode and moves synchronously with the puncture needle, and the second contact surface can move to be in sealing contact with the first contact surface. The scheme can effectively form sealing at the puncture hole, avoids the influence of external gas on the internal environment of the battery pack to be detected, and reduces interference factors so as to ensure the accuracy of the result of the detection test.

Description

Acupuncture test device

Technical Field

The application belongs to the technical field of battery performance test equipment, and particularly relates to a needling test device.

Background

The power battery pack is the only power energy source of the pure electric vehicle at present, and is used as a core component of the pure electric vehicle, and the safety of the battery pack system directly influences the safety of the whole vehicle. When a single battery in the battery pack is out of control due to heat, energy generated by the out of control due to heat of the single battery can possibly cause out of control due to heat of other batteries, and further thermal out of control of the battery module and the battery pack is caused. Therefore, it is of great significance to study the situation where thermal runaway of a single cell causes thermal diffusion within a battery pack.

GB 38031 "safety requirements for power storage batteries for electric vehicles" has specified a thermal diffusion test method for a battery pack system and requires: the battery pack or the system should provide a thermal event alarm signal (serving for the whole vehicle thermal event alarm and reminding passengers to evacuate) 5min before the thermal diffusion caused by the thermal runaway of the single battery and further causing the danger of the passenger compartment.

Currently, heating and needling are the main two ways to trigger thermal runaway of a cell.

The thermal runaway triggered by heating may additionally introduce external energy to generate a preheating effect on other batteries, thereby possibly affecting the thermal runaway of the entire battery pack. The single battery thermal runaway in the battery pack can be triggered by adopting a needling triggering mode without introducing extra energy, so that the thermal diffusion condition in the battery pack is accurately explored, but the conventional needling triggering device cannot seal a needling port, so that air is brought in, and the gas composition in the battery pack is changed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned shortcoming among the prior art, the aim at of this application provides a acupuncture test device, can effectively reduce or even avoid leading to the influence that external gas led to the fact the battery package internal environment because of the acupuncture breach, ensures the experimental accuracy of acupuncture.

The technical means adopted by the application to solve the technical defects are as follows:

a lancing test device is provided herein that includes a first seal, a second seal, and a lancet;

the first sealing part is provided with a first contact surface, and the first sealing part is connected to a battery pack to be detected;

the second sealing element is provided with a second sealing part for the puncture needle to pass through, the second sealing part is provided with a second contact surface, the second sealing element is arranged on the puncture needle in a sealing connection mode and moves synchronously with the puncture needle, and the second contact surface can move to be in sealing contact with the first contact surface.

In the implementation process, the first sealing element and the second sealing element are skillfully arranged, the first sealing element is arranged on the battery pack to be detected in a connecting mode, the second sealing element is arranged on the puncture needle, when a puncture test is carried out, the puncture needle moves to drive the second sealing element to move synchronously, and at the moment, the puncture needle penetrates through the middle of the first sealing element and enables the second contact surface to move to be in sealing contact with the first contact surface, so that a puncture hole can be effectively sealed, the influence of external gas on the internal environment of the battery pack to be detected is avoided, interference factors are reduced, and the accuracy of the detection test result is ensured.

Further, the first sealing element comprises a first connecting plate, the first sealing part is arranged towards one side surface of the first connecting plate in a protruding mode, and the other side surface of the first connecting plate is connected with the battery pack to be detected in a sealing mode.

In the implementation process, the first sealing part is designed to be in a protruding arrangement mode, so that the influence on the battery pack to be detected due to installation and arrangement of the first sealing part can be effectively avoided, and meanwhile, the first connecting plate and the battery pack to be detected can be connected more conveniently.

Further, a circular truncated cone-shaped cavity is arranged in the middle of the first sealing portion, and the first contact surface is the inner wall surface of the cavity.

In the implementation process, the first contact surface is arranged in the form of the inner wall surface of the truncated cone-shaped cavity, so that the sealing contact effect between the second contact surface and the first contact surface is better.

Further, the second sealing member includes a second connection plate, and the second sealing portion is convexly provided toward one side surface of the second connection plate;

the second sealing portion is arranged in a round table shape, and the second contact surface is the outer side surface of the second sealing portion.

In the implementation process, the second contact surface is arranged as the outer side surface of the circular truncated cone-shaped structure, so that the second contact surface can be matched with the first contact surface to a greater extent, and the reliability of the sealing effect is ensured.

Further, the pricking pin is arranged on a clamping component, and a mounting plate is arranged on the clamping component;

the relative position distance between the second connecting plate and the mounting plate is adjustable.

In the implementation process, the setting position of the second connecting plate is adjusted, so that the puncturing depth of the puncturing needle can be controlled, and the operation is more convenient and reliable.

Furthermore, a plurality of adjusting screw rods are arranged between the second connecting plate and the mounting plate, one ends of the adjusting screw rods are connected with the second connecting plate, and the other ends of the adjusting screw rods are connected with the mounting plate.

In the implementation process, the adjusting screw rod is arranged, so that the setting position of the second connecting plate can be finely adjusted conveniently.

The first adjusting mechanism comprises a first rail which is vertically arranged and a first sliding block which is arranged on the first rail in a sliding mode;

the puncture needle is arranged on the first sliding block.

In the implementation process, the position of the pricking pin in the vertical direction can be adjusted by the arranged first adjusting mechanism so as to adapt to the pricking test at more positions.

The device further comprises a second adjusting mechanism, wherein the second adjusting mechanism comprises a second rail which is horizontally arranged and a second sliding block which is arranged on the second rail in a sliding manner;

the first adjusting mechanism is arranged on the second sliding block.

In the implementation process, the position of the puncture needle on the horizontal position can be adjusted through the second adjusting mechanism, so that the puncture time and the puncture depth of the puncture needle can be controlled.

Furthermore, linear motors are arranged corresponding to the first sliding block and the second sliding block.

In the implementation process, the linear motor is arranged, so that the first sliding block and the second sliding block can be accurately controlled to move conveniently.

Furthermore, the fireproof plate is further provided with a groove for the second sealing element to penetrate out, and the opening width of the groove is matched with the width of the second sealing element.

In the above-mentioned realization process, set up the PLASTIC LAMINATED can avoid when experimental battery thermal runaway phenomenon to cause unexpected influence to device and operating personnel, security when effectively improving the acupuncture test.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic diagram of the structure of the acupuncture test device.

Fig. 2 is a schematic structural diagram of a first seal of the present application.

Fig. 3 is a schematic view of a mounting structure of the first sealing member of the present application.

FIG. 4 is a schematic view of the lancet mounting structure of the present application.

Fig. 5 is a schematic view of the mounting structure of the fire retardant panel of the present application.

Description of the labeling:

1-first seal, 11-first web, 12-first seal, 121-first contact surface;

2-second seal, 21-second web, 211-adjusting screw, 22-second seal, 221-second contact surface;

3-a felting needle, 31-a clamping component, 311-a base, 312-a clamping head, 313-a mounting plate, 32-a first adjusting mechanism, 321-a first track, 322-a first sliding block, 33-a second adjusting mechanism, 331-a second track, 332-a second sliding block, 34-a fireproof plate, 341-a groove;

4-battery pack to be detected.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in FIGS. 1-5, the present embodiment provides a lancing test device that basically comprises a first seal 1, a second seal 2 and a lancet 3.

As one of application examples, the first seal member 1 in the present embodiment is provided with a first connection plate 11 and a first seal portion 12.

The first sealing portion 12 protrudes toward one side of the first connecting plate 11, and a truncated cone-shaped cavity is formed in the middle of the first sealing portion 12, and the puncture needle 3 can pass through the cavity when a puncture test is performed. A first contact surface 121 is formed on the inner wall surface of the cavity.

The other side surface of the first connecting plate 11 is hermetically connected with the battery pack 4 to be detected.

As a preferable scheme, the sealing connection between the first connecting plate 11 and the battery pack 4 to be detected may be an adhesive sealing connection between end surfaces, a sealing installation manner that a fastener is matched with an end surface sealing ring, or a combination of the two manners, which is not limited specifically here.

Further, the second seal 2 is provided with a second connecting plate 21 and a second seal portion 22.

In this embodiment, the second sealing portion 22 is provided to protrude toward one side surface of the second connection plate 21, and the second sealing portion 22 is provided to face the first sealing portion 12 in the attached state of the second connection plate 21.

Preferably, a through hole is formed in the middle of the second sealing portion 22, the needle 3 is inserted into the through hole and maintains a seal with the second sealing portion 22, for example, a sealing ring is formed between the needle 3 and the second sealing portion 22.

As a preferable scheme, the second sealing portion 22 in this embodiment is disposed in a circular truncated cone shape, and an external shape structure of the second sealing portion 22 is adapted to an internal cavity structure of the first sealing portion 12. At this time, a second contact surface 221 is formed on the outer surface of the second seal portion 22. In this case, the second contact surface 221 and the first contact surface 121 are both circular truncated cone-shaped structural surfaces, and when a needling test is performed, the second seal 2 moves along with the movement of the lancet 3, and at this time, a certain guiding effect exists between the first contact surface 121 and the second contact surface 221; meanwhile, when the first contact surface 121 and the second contact surface 221 form a matching contact, the first contact surface 121 and the second contact surface 221 are in a variable cross-section sealing connection, and the sealing effect is better.

Can form the complete sealing to needle puncture department this moment to effectively reduce and avoid external gas to enter into through needle puncture department and wait to detect in battery package 4, avoid external gas to treat the internal environment that detects battery package 4 and cause the influence, thereby can ensure to detect battery package 4 and can carry out the acupuncture test under more primitive state, be convenient for improve battery thermal runaway experimental accuracy.

Furthermore, as a preferred solution, a clamping assembly 31, a first adjusting mechanism 32 and a second adjusting mechanism 33 are also provided in this embodiment for the lancet needle 3.

The clamping assembly 31 includes a base 311, and a clamping head 312 disposed on the base 311. One end of the puncture needle 3 is arranged on the clamping head 312, and the other end of the puncture needle 3 passes through the second sealing part 22 and is exposed.

Preferably, a mounting plate 313 is further provided on the clamping head 312 corresponding to the second connecting plate 21. The mounting plate 313 is fixedly arranged on the clamping head 312, and the second connecting plate 21 is relatively slidably arranged on the needle 3, so that the relative position distance between the second connecting plate 21 and the mounting plate 313 can be adjusted. The puncturing depth of the puncturing needle 3 can be controlled by adjusting the arrangement position of the second connecting plate 21, and the operation is more convenient and reliable.

As a preferable scheme, in the present embodiment, a plurality of adjusting screws 211 are disposed between the second connecting plate 21 and the mounting plate 313, and in the present embodiment, four adjusting screws 211 are disposed, so that the stress of the second connecting plate 21 is more balanced. One end of the adjusting screw 211 is connected to the second connecting plate 21, and the other end of the adjusting screw 211 is connected to the mounting plate 313.

As an application example, in the present embodiment, a plurality of adjusting nuts are disposed at both ends of the adjusting screw 211, and the position of the second connecting plate 21 on the adjusting screw 211 is adjusted by adjusting the positions of the adjusting nuts on the adjusting screw 211. The mode of setting up to screw thread adjustment can be convenient for realize finely tuning the installation setting position of second connecting plate 21.

Further, the first adjusting mechanism 32 includes a first rail 321 vertically disposed, a first slider 322 slidably disposed on the first rail 321, and a linear motor for driving the first slider 322 to perform a sliding motion. The clamping assembly 31 is disposed on the first sliding block 322. By providing the first adjustment mechanism 32, the position of the lancet 3 in the vertical direction can be adjusted to accommodate lancing tests at more positions.

Further, the second adjusting mechanism 33 includes a second rail 331 horizontally disposed, a second slider 332 slidably disposed on the second rail 331, and a linear motor for driving the second slider 332 to perform a sliding motion. The first adjusting mechanism 32 is arranged on the second slider 332, and the position of the lancet 3 in the horizontal position can be adjusted by the second adjusting mechanism 33, so that the puncturing time and the puncturing depth of the lancet 3 can be controlled.

The linear motors (not shown) disposed corresponding to the first slider 322 and the second slider 332 can facilitate precise control of the movement of the first slider 322 and the second slider 332. As an example of application, the linear motors corresponding to the first slider 322 and the second slider 332 are electrically connected to a control system, for example, can be controlled by an industrial personal computer in the control system to control specific operations of the first adjusting mechanism 32 and the second adjusting mechanism 33.

In addition, still be provided with PLASTIC LAMINATED 34 in this embodiment, PLASTIC LAMINATED 34 is for being vertically set up wait to detect battery package 4 with between first adjustment mechanism 32, the second adjustment mechanism 33 for battery thermal runaway phenomenon causes unexpected influence to device and operating personnel during avoiding the experiment, security when effectively improving the acupuncture test.

Preferably, a slot 341 through which the second sealing element 2 extends is provided in the fire prevention plate 34; the opening width of the slot 341 is adapted to the width of the second sealing element 2, and the opening height of the slot 341 is not less than the height of the battery pack 4 to be detected.

In this embodiment, the specific structural form of the battery pack 4 to be detected can be referred to in the prior art, and is not described herein again.

The above description is only a specific embodiment of the present application, and is not intended to limit the scope of the present application, and it is obvious to those skilled in the art that various modifications and variations can be made in the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. Any person skilled in the art can easily think of changes or substitutions in the technical scope disclosed in the present application, and shall also cover the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

Claims

1. A acupuncture test device is characterized by comprising a first sealing element, a second sealing element and a puncture needle;

2. A needle prick test device according to claim 1, wherein the first sealing member includes a first connection plate, the first sealing portion protrudes toward one side surface of the first connection plate, and the other side surface of the first connection plate is connected to the battery pack to be tested in a sealing manner.

3. A needlestick testing device as claimed in claim 2, in which a truncated cone-shaped cavity is provided in the middle of the first sealing portion, and the first contact surface is an inner wall surface of the cavity.

4. A lancing test device according to any one of claims 1 to 3, wherein the second seal comprises a second web, the second seal being arranged to project towards one side of the second web;

5. A lancing test device according to claim 4, wherein the lancet is disposed on a clamping assembly, the clamping assembly having a mounting plate disposed thereon;

6. A acupuncture test device according to claim 5, characterized in that a plurality of adjusting screws are arranged between the second connecting plate and the mounting plate, one end of each adjusting screw is connected with the second connecting plate, and the other end of each adjusting screw is connected with the mounting plate.

7. The acupuncture test device according to claim 1 or 6, further comprising a first adjusting mechanism, wherein the first adjusting mechanism comprises a first rail vertically arranged, and a first slider slidably arranged on the first rail;

the puncture needle is arranged on the first sliding block.

8. A acupuncture test device according to claim 7, further comprising a second adjustment mechanism, the second adjustment mechanism including a second rail disposed horizontally, a second slider slidably disposed on the second rail;

the first adjusting mechanism is arranged on the second sliding block.

9. A needlestick testing device as claimed in claim 8, in which linear motors are provided for the first and second sliders.

10. The acupuncture test device according to claim 1 or 9, further comprising a fireproof plate, wherein a slot for the second sealing element to penetrate out is formed in the fireproof plate, and the opening width of the slot is matched with the width of the second sealing element.