Acupuncture test system
By designing an acupuncture testing system including a voltage detection module and a power supply module, the problem of the inability to accurately determine the acupuncture starting point in the prior art is solved, and the accurate measurement of the actual acupuncture depth of the battery is achieved, and the testing efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202420602272.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-26
AI Technical Summary
In the prior art, the starting point of the needle-punch test cannot be accurately determined, resulting in the actual needle-punch depth of the battery being unable to accurately obtain.
An acupuncture testing system is designed, including acupuncture testing equipment, voltage detection module and power supply module. One end of the voltage detection module is electrically connected to the puncture needle, the other end is electrically connected to the power supply module, and the other end of the power supply module is electrically connected to the sample to be punctured. When the apex needle comes into contact with the sample to be acupuncture, a closed circuit is formed, and the voltage collected by the voltage detection module determines the contact point between the apex needle and the sample to be acupuncture, thereby accurately determining the starting point of the apex.
Through this system, the starting point of the acupuncture can be accurately determined, and the actual acupuncture depth of the sample to be acupuncture can be accurately calculated, reducing manual participation, and improving testing efficiency and accuracy.
Smart Images
Figure CN222618753U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of battery testing, and in particular to a needle penetration testing system. Background Art
[0002] The nail penetration test is an internal short circuit test method, which is mainly used to test the internal short circuit tolerance of lithium-ion batteries. The nail penetration test usually uses a steel nail to penetrate the battery to simulate an internal short circuit to confirm whether the battery has smoke, fire, or rupture. As an important test in the safety test of lithium-ion batteries, it can not only confirm the safety of the battery, but also understand the basic properties of the battery.
[0003] In the related art, when a battery is subjected to a puncture test on a puncture test device, due to factors such as the type and specification of the battery, different types of batteries are clamped at different positions on the test bench, resulting in different starting points for each puncture test. Therefore, when performing puncture tests on different types of batteries, it is currently necessary to measure the distance from the puncture needle tip to the battery in advance to determine the starting point of the puncture needle, and then obtain the actual puncture depth of the battery. However, in the process of measuring the distance from the puncture needle tip to the battery, since the puncture force of the puncture test is relatively small, the distance from the puncture needle tip to the battery cannot be measured by the change in force value, and the puncture environment is relatively harsh (such as smoke, high temperature, vibration), and cannot be measured by a sensor measurement solution. In addition, due to the particularity of the battery, it is impossible to directly contact the puncture needle tip with the battery through debugging, and there are safety hazards during the debugging process.
[0004] Therefore, how to accurately determine the starting point of the puncture to obtain the actual puncture depth of the battery after the puncture test is completed is a technical problem that urgently needs to be solved. Utility Model Content
[0005] In view of the deficiencies of the prior art, the present application provides an acupuncture testing system, which aims to solve the technical problem in the prior art that the starting point of acupuncture cannot be accurately determined.
[0006] To solve the above problems, the present application provides a needle puncture test system, which includes:
[0007] A needle puncture test device is provided with a puncture needle;
[0008] A voltage detection module, one end of which is electrically connected to the needle;
[0009] A power supply module, one end of which is electrically connected to the other end of the voltage detection module, and the other end of which is configured to be electrically connected to the sample to be acupunctured;
[0010] The needle can move toward the sample to be punctured, and after contacting the sample to be punctured, a closed loop is formed between the sample to be punctured, the needle, the voltage detection module and the power supply module.
[0011] Furthermore, in the acupuncture test system, the other end of the power supply module is electrically connected to the shell of the sample to be acupunctured, and the shell has a conductive property.
[0012] Furthermore, in the needle penetration test system, the sample to be needle penetrated includes a battery.
[0013] Furthermore, in the acupuncture test system, the voltage collection range of the voltage detection module is 0 to 5V; or / and
[0014] The moving speed of the needle is no more than 0.1 mm / s.
[0015] Further, in the acupuncture test system, the acupuncture test device includes:
[0016] Pedestal;
[0017] A support member, fixed on the base;
[0018] A guide member, fixedly connected to the support member;
[0019] A moving member, provided with the needle, wherein the moving member is slidably connected to the guide member;
[0020] The clamping member is fixedly connected to the supporting member and is used to clamp and fix the sample to be punctured.
[0021] Furthermore, in the acupuncture test system, the support member includes a back plate and a test table;
[0022] Wherein, the back plate is fixed on the base and fixedly connected to the guide member; the test bench is arranged below the clamping member and fixedly connected to the clamping member, and is also used to carry the sample to be punctured.
[0023] Furthermore, in the acupuncture test system, a guide column and a hydraulic support rod are provided below the test platform, the guide column is used to balance the test platform, and the hydraulic support rod is used to drive the test platform to move up and down.
[0024] Furthermore, in the acupuncture test system, the guide member includes a first guide shaft and a second guide shaft;
[0025] Among them, one end of the first guide shaft and one end of the second guide shaft are fixedly connected to the support member, the other end of the first guide shaft and the other end of the second guide shaft are slidably connected to the moving member, and the first guide shaft and the second guide shaft are arranged in parallel in the same direction.
[0026] Furthermore, in the acupuncture test system, the moving member includes a main shaft, a moving plate and a puncture needle fixture;
[0027] The movable plate is slidably connected to the guide member, the main shaft and the needle clamp are fixedly connected to the movable plate, the needle clamp is used to clamp and fix the needle, and the needle moves toward the sample to be punctured through the motor at the main shaft.
[0028] Furthermore, in the acupuncture test system, a pressure sensor is provided between the movable plate and the puncture needle fixture, and the pressure sensor is used to detect the pressure of the puncture needle puncturing the sample to be punctured.
[0029] The acupuncture test system provided in the present application not only uses the acupuncture test equipment to perform the acupuncture test on the sample to be acupunctured, but also additionally provides a voltage detection module and a power supply module, one end of the voltage detection module is electrically connected to the pricking needle in the acupuncture test equipment, and the other end of the voltage detection module is electrically connected to one end of the power supply module, and the other end of the power supply module is configured to be electrically connected to the sample to be acupunctured, and then when the pricking needle moves toward the sample to be acupunctured, if the pricking needle just contacts the sample to be acupunctured, a closed loop is formed between the sample to be acupunctured, the pricking needle, the voltage detection module and the power supply module, and at this time, the voltage fed back by the voltage detection module can be used to determine when the pricking needle and the sample to be acupunctured just contact, thereby accurately determining the starting point of the acupuncture, and then after the sample to be acupunctured completes the acupuncture test, the actual acupuncture depth of the sample to be acupunctured can be accurately determined based on the starting point of the acupuncture, thereby reducing manual participation, improving the debugging time of the acupuncture test, and greatly improving the test efficiency and accuracy of the acupuncture test. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0031] Figure 1 A schematic block diagram of a needle prick test performed by a needle prick test system provided in an embodiment of the present application;
[0032] Figure 2A schematic diagram of the structure of the acupuncture test system provided in an embodiment of the present application for performing acupuncture test. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0034] It should be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.
[0035] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. that may be mentioned in the description of this application indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0036] As analyzed in the background of the present application, the prior art cannot accurately determine the starting point of the puncture, thereby failing to accurately obtain the actual puncture depth of the battery. To solve the above technical problems, the present application provides a puncture test system 10.
[0037] See also Figure 1 , Figure 1 A schematic block diagram of a needle puncture test performed by a needle puncture test system provided in an embodiment of the present application. Figure 1 As shown, a needle penetration test system 10 includes:
[0038] The acupuncture test device 100 is provided with a puncture needle 131;
[0039] A voltage detection module 200, one end of which is electrically connected to the needle 131;
[0040] A power supply module 300, one end of the power supply module 300 is electrically connected to the other end of the voltage detection module 200, and the other end of the power supply module 300 is configured to be electrically connected to the sample to be acupunctured 20;
[0041] The needle 131 can move toward the sample 20 to be punctured, and after contacting the sample 20 to be punctured, a closed loop is formed among the sample 20 to be punctured, the needle 131 , the voltage detection module 200 and the power supply module 300 .
[0042] In this embodiment, the needle 131 may be a steel needle in the acupuncture test device 100, which is mainly used to acupuncture the sample 20 to be acupunctured, so as to test the bearing capacity of the sample 20 to be acupunctured after an internal short circuit. The voltage detection module 200 is used to collect the voltage when the needle 131 and the sample 20 to be acupunctured just start to contact, and then determine whether the needle 131 and the sample 20 to be acupunctured are in contact, so as to accurately determine the starting point of acupuncture, so that the actual acupuncture depth of the sample 20 to be acupunctured can be accurately calculated after the acupuncture test is completed. The power supply module 300 is used to form a closed loop between the sample 20 to be acupunctured, the needle 131, the voltage detection module 200 and the power supply module 300 when the needle 131 and the sample 20 to be acupunctured just start to contact, so as to facilitate the voltage detection module 200 to collect the voltage when the needle 131 and the sample 20 to be acupunctured just start to contact.
[0043] The acupuncture test system 10 provided in the present application not only uses the acupuncture test device 100 to perform the acupuncture test on the sample to be acupunctured 20, but also additionally provides a voltage detection module 200 and a power supply module 300. One end of the voltage detection module 200 is electrically connected to the needle 131 in the acupuncture test device 100, and the other end of the voltage detection module 200 is electrically connected to one end of the power supply module 300. The other end of the power supply module 300 is configured to be electrically connected to the sample to be acupunctured 20. In the process of the needle 131 moving toward the sample to be acupunctured 20, if there is a collision between the needle 131 and the sample to be acupunctured 20, When they first come into contact, a closed loop is formed between the sample to be punctured 20, the puncture needle 131, the voltage detection module 200 and the power supply module 300. At this time, the voltage fed back by the voltage detection module 200 can be used to determine that the puncture needle 131 and the sample to be punctured 20 have just started to contact, thereby accurately determining the starting point of the puncture. After the puncture test of the sample to be punctured 20 is completed, the actual puncture depth of the sample to be punctured 20 can be accurately determined based on the starting point of the puncture, thereby reducing manual participation, improving the debugging time of the puncture test, and greatly improving the test efficiency and accuracy of the puncture test.
[0044] In some embodiments, the other end of the power supply module 300 is electrically connected to the housing of the sample to be punctured 20 , and the housing has a conductive property.
[0045] In this embodiment, the sample 20 to be punctured can be provided with a conductive material on the surface of its shell, and then the other end of the power module 300 is electrically connected to the conductive material on the shell of the sample 20 to be punctured; at the same time, the shell of the sample 20 to be punctured can also be partially or entirely made of conductive materials, and then the other end of the power module 300 can be directly electrically connected to the conductive area on the shell of the sample to be punctured, so that when the needle 131 and the shell of the sample 20 to be punctured just start to contact, the voltage collected by the voltage detection module 200 can accurately determine the starting point of the puncture. The sample 20 to be punctured can be a battery, which can be a lithium battery, but is not limited to a lithium battery, and can be other types of batteries that need to be punctured.
[0046] It can be understood that if the sample 20 to be punctured can be a battery, the battery can be of any type and size, as long as part or all of the area of the battery shell is made of conductive material, then the position of the puncture test is located at the position where the battery shell has conductive properties; if a conductive material is provided on the battery shell, then the puncture position is also located at the position where the conductive material is provided on the shell. At the same time, the conductive material provided on the battery shell may be part of the battery or not. If it is not part of the battery, then in order to more accurately test the puncture depth of the battery, it is necessary to know in advance the thickness of the conductive material provided on the battery shell.
[0047] In some embodiments, the voltage collection range of the voltage detection module 200 is 0-5V, and the moving speed of the needle 131 is no more than 0.1 mm / s.
[0048] In this embodiment, in order to save test costs and ensure the safety of the acupuncture test, the power supply module 300 can be a dry battery, and the voltage collection range of the voltage detection module 200 can be set between 0 and 5V. At the same time, in order to more accurately determine the starting point of the acupuncture, it is necessary to ensure that the moving speed of the needle 131 is as slow as possible, and then before the needle 131 does not contact the sample 20 to be acupunctured, the acupuncture test device 100 controls the needle 131 to move toward the device to be acupunctured at a speed not greater than 0.1mm / s.
[0049] It should be noted that before the puncture needle 131 comes into contact with the sample 20 to be punctured, the voltage collected by the voltage detection module 200 may not be 0 due to factors such as the environment of the puncture test. However, at the moment when the puncture needle 131 comes into contact with the sample 20 to be punctured, the voltage collected by the voltage detection module 200 is greater than 1V. Therefore, the present application can determine whether the puncture needle 131 is just in contact with the sample 20 to be punctured by whether the voltage collected by the voltage detection module 200 is greater than 1.
[0050] In some embodiments, Figure 2 As shown, the needle penetration test device 100 includes:
[0051] A base (not shown);
[0052] A support member 110, fixed on the base;
[0053] The guide member 120 is fixedly connected to the support member 110;
[0054] The moving member 130 is provided with a needle 131, and the moving member 130 is slidably connected with the guide member 120;
[0055] The clamping member 140 is fixedly connected to the supporting member 110 and is used to clamp and fix the sample 20 to be punctured.
[0056] In this embodiment, the support member 110 is mainly used to support the guide member 120 so that the needle 131 of the movable member 130 can move on the guide member 120. The guide member 120 is used to guide the needle 131 on the movable member 130 to move toward the sample to be pricked 20. The clamping member 140 is used to clamp and fix the sample to be pricked 20 so that the acupuncture test device 100 can perform acupuncture test on the sample to be pricked 20.
[0057] In some embodiments, Figure 2 As shown, the support member 110 includes a back plate 111 and a test table 112; wherein the back plate 111 is fixed on the base and fixedly connected to the guide member 120; the test table 112 is arranged below the clamping member 140 and fixedly connected to the clamping member 140, and is also used to carry the sample 20 to be punctured.
[0058] In this embodiment, the test table 112 is mainly used to carry the sample to be punctured 20, the clamping member 140 is disposed on the test table 112 and fixedly connected to the test table 112, and the back plate 111 can be fixedly connected to the guide member 120 through a locking nut 124. When the clamping member 140 clamps and fixes the sample to be punctured 20, the sample to be punctured 20 abuts against the back plate 111.
[0059] Furthermore, in some embodiments, Figure 2 As shown, a guide column 113 and a hydraulic support rod 114 are provided below the test bench 112 . The guide column 113 is used to balance the test bench 112 , and the hydraulic support rod 114 is used to drive the test bench 112 to move up and down.
[0060] In this embodiment, four guide posts 113 may be arranged below the test bench 112. The connection points formed by the four guide posts 113 on the horizontal plane may be rectangular. The four guide posts 113 are all fixedly connected to the test bench 112. At the same time, the four guide posts 113 are all telescopic. Their main function is to balance the test bench 112 so that when the sample 20 to be punctured is subjected to acupuncture test on the test bench 112, the needle 131 can horizontally penetrate into the inside of the sample 20 to be punctured. At the same time, a hydraulic support rod 114 may be arranged below the test bench 112. The hydraulic support rod 114 may be fixedly connected to the test bench 112 at the center of the bottom of the test bench 112. The hydraulic support rod 114 is mainly used to support the test bench 112. At the same time, the hydraulic support rod 114 can also be telescopic to enable the test bench 112 to move up and down, so that the needle 131 can be used to puncture at different positions of the sample 20 to be punctured.
[0061] It should be noted that the present application may also directly set a plurality of hydraulic support rods 114 under the test bench 112 . In this case, there is no need to set a guide column 113 under the test bench 112 . In order to save costs, the present application prefers to set four guide columns 113 and one hydraulic support rod 114 under the test bench 112 .
[0062] In some embodiments, Figure 2 As shown, the guide member 120 includes a first guide shaft 121 and a second guide shaft 122; wherein, one end of the first guide shaft 121 and one end of the second guide shaft 122 are fixedly connected to the support member 110, and the other end of the first guide shaft 121 and the other end of the second guide shaft 122 are slidably connected to the moving member 130, and the first guide shaft 121 and the second guide shaft 122 are arranged in parallel in the same direction.
[0063] Specifically, in order to ensure that the needle 131 on the movable member 130 can stably penetrate the interior of the sample 20 to be punctured in the horizontal direction, the present embodiment can sequentially set the first guide shaft 121 and the second guide shaft 122 in the vertical direction, one end of the first guide shaft 121 and one end of the second guide shaft 122 are fixedly connected to the support member 110 through a locking nut 124, and the other end of the first guide shaft 121 and the other end of the second guide shaft 122 are slidably connected to the movable member 130, so that the needle 131 on the movable member 130 can stably penetrate the interior of the sample 20 to be punctured in the horizontal direction when moving toward the sample 20 to be punctured.
[0064] In some embodiments, Figure 2As shown, the moving member 130 includes a main shaft 132, a moving plate 133 and a needle clamp 134; wherein the moving plate 133 is slidably connected to the guide member 120, the main shaft 132 and the needle clamp 134 are fixedly connected to the moving plate 133, and the needle clamp 134 is used to clamp and fix the needle 131, and the needle 131 is moved toward the sample 20 to be punctured by the motor at the main shaft 132.
[0065] In this embodiment, when the moving member 130 moves toward the sample 20 to be acupunctured, a motor is mainly provided in the acupuncture test device 100, and the motor can drive the main shaft 132 to move toward the sample to be acupunctured, thereby realizing that the needle 131 clamped and fixed on the needle clamp 134 moves toward the sample 20 to be acupunctured. Among them, the moving plate 133 can be slidably connected with the guide member 120 by a linear bearing 123.
[0066] Furthermore, in some embodiments, Figure 2 As shown, a pressure sensor 135 is provided between the moving plate 133 and the needle clamp 134 , and the pressure sensor 135 is used to detect the pressure of the needle 131 when puncturing the sample 20 to be punctured.
[0067] Specifically, in order to obtain the pressure of the needle 131 when it penetrates into the sample 20 to be punctured, the present application may set a pressure sensor 135 between the movable plate 133 and the needle clamp 134 to obtain the pressure of the needle 131 when it penetrates into the sample 20 to be punctured, and then analyze the performance of the sample 20 to be punctured during the puncture test.
[0068] The process of the acupuncture test system 10 provided in the present application for performing acupuncture test on the sample to be pricked 20 may be:
[0069] The sample 20 to be punctured is placed on the test table 112, and the clamping member 140 is used to clamp and fix the sample 20 to be punctured;
[0070] The height of the test platform 112 is adjusted by the hydraulic support rod 114 so that the needle 131 can be aligned with the sample 20 to be punctured;
[0071] Start the motor and control the moving speed of the needle 131 to be 0.1 mm / s;
[0072] When the voltage detection module 200 collects a voltage not less than 1V, the control motor stops driving the main shaft 132 to move toward the sample to be punctured 20, and at the same time edits the puncture process of the sample to be punctured 20 to test it. After the puncture process editing is completed, the control motor drives the main shaft 132 to move toward the sample to be punctured 20 to perform a puncture test on the sample to be punctured 20.
[0073] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A needle puncture test system, characterized in that: include: A needle puncture test device is provided with a puncture needle; A voltage detection module, one end of which is electrically connected to the needle; A power supply module, one end of which is electrically connected to the other end of the voltage detection module, and the other end of which is configured to be electrically connected to the sample to be acupunctured; The needle can move toward the sample to be punctured, and after contacting the sample to be punctured, a closed loop is formed between the sample to be punctured, the needle, the voltage detection module and the power supply module.
2. The acupuncture test system according to claim 1, characterized in that: The other end of the power supply module is electrically connected to the shell of the sample to be acupunctured, and the shell has a conductive property.
3. The acupuncture test system according to claim 2, characterized in that: The sample to be punctured includes a battery.
4. The acupuncture test system according to claim 1, characterized in that: The voltage acquisition range of the voltage detection module is 0-5V; or / and The moving speed of the needle is no more than 0.1 mm / s.
5. The acupuncture test system according to any one of claims 1 to 4, characterized in that: The acupuncture test equipment comprises: Pedestal; A support member, fixed on the base; A guide member, fixedly connected to the support member; A moving member, provided with the needle, wherein the moving member is slidably connected to the guide member; The clamping member is fixedly connected to the supporting member and is used to clamp and fix the sample to be punctured.
6. The acupuncture test system according to claim 5, characterized in that: The support member includes a back plate and a test bench; Wherein, the back plate is fixed on the base and fixedly connected to the guide member; the test bench is arranged below the clamping member and fixedly connected to the clamping member, and is also used to carry the sample to be acupunctured.
7. The acupuncture test system according to claim 6, characterized in that: A guide column and a hydraulic support rod are arranged below the test bench. The guide column is used to balance the test bench, and the hydraulic support rod is used to drive the test bench to move up and down.
8. The acupuncture test system according to claim 5, characterized in that: The guide member comprises a first guide shaft and a second guide shaft; Among them, one end of the first guide shaft and one end of the second guide shaft are fixedly connected to the support member, the other end of the first guide shaft and the other end of the second guide shaft are slidably connected to the moving member, and the first guide shaft and the second guide shaft are arranged in parallel in the same direction.
9. The acupuncture test system according to claim 5, characterized in that: The moving part includes a main shaft, a moving plate and a needle fixture; The movable plate is slidably connected to the guide member, the main shaft and the needle clamp are fixedly connected to the movable plate, the needle clamp is used to clamp and fix the needle, and the needle moves toward the sample to be punctured through the motor at the main shaft.
10. The acupuncture test system according to claim 9, characterized in that: A pressure sensor is provided between the movable plate and the puncture needle fixture, and the pressure sensor is used to detect the pressure of the puncture needle when puncturing the sample to be punctured.