Tab welding strength detection device
By designing the extreme ear welding strength detection device, using the force measuring components and display screen to accurately control the power, the problems of inaccurate and missed detection in the existing technology are solved, and high-precision full inspection and cost reduction are achieved.
Patent Information
- Application Number
- CN202421988955.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The existing extreme ear welding strength detection method is tensile testing method. It is difficult to control the magnitude of the tickling power by manually typing the extreme ear with your hands, resulting in inaccurate detection results and easily resulting in sample scrapping. It can only be performed by sampling inspection, which is easy to miss inspection.
An extreme ear welding strength detection device is designed, including a force measuring component, a paddle and a display screen. The value of the throttle power is obtained through the force measuring component and displayed on the display screen. The magnitude of the throttle power is accurately controlled to avoid excessive or too small throttle power, improve detection accuracy and achieve full inspection.
It realizes an accurate judgment on whether the welding of the pole ear and busbar is stable, avoids sample scrapping caused by excessive force, reduces inspection costs and avoids missed inspection.
Smart Images
Figure CN223091691U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding strength detection, in particular to a tab welding strength detection device. Background Art
[0002] In the battery welding process, when the tabs of the battery cell are welded to the busbar, the tabs and the busbars are often poorly welded. When the battery with poor welding is put into use, it will cause the internal resistance of the battery cell to be too large, the temperature rise to be too high, and in severe cases, the welding will even fall off and spark, affecting the performance and safety of the battery.
[0003] The existing method for testing the welding strength of the tabs is usually the tensile test method. When manually moving the tabs, it is difficult to control the force. Even if the tabs are well welded to the busbars, there is a possibility that the tabs will break due to excessive force when moving by hand, resulting in inaccurate test results and sample scrapping. Moreover, the tensile test method is a destructive test and can only be used for random inspection, which is prone to missed inspections. Utility Model Content
[0004] The utility model aims to provide a tab welding strength detection device to improve the detection accuracy of the tab welding strength device, reduce the detection cost and avoid missed detection.
[0005] To achieve this purpose, the technical solution adopted by the utility model is:
[0006] A device for detecting the welding strength of a tab includes a force measuring component, a paddle and a display screen. The paddle includes a force applying end and an action end. The action end can act on the tab welding portion to apply a paddle force. The force measuring component is connected to the force applying end to obtain the paddle force. The display screen is connected to the force measuring component to display the value of the paddle force.
[0007] As an optional solution, a gripping portion is further included, and the gripping portion is connected to the force-applying end of the paddle.
[0008] As an optional solution, a flat surface is provided on the gripping portion, and the flat surface is configured to be able to flatten the detected tab.
[0009] As an optional solution, the force measuring component includes:
[0010] A force sensor, wherein the force-applying end is connected to the force sensor;
[0011] A control module is electrically connected to the force sensor and the display screen respectively, and is configured to read the pressure signal of the force sensor and convert it into a pulling force value and transmit it to the display screen.
[0012] As an optional solution, it further includes a plurality of buttons, and the plurality of buttons are all electrically connected to the control module; the plurality of buttons at least include a power button, a menu button, an up button and a down button.
[0013] As an optional solution, the power key is used to control the opening and closing of the display screen; the menu key can at least be used to call up the detection record of the tab welding strength detection device, and call up the interface for modifying and / or adding new dial force settings; the up key and down key can at least be used to turn pages up and down, and set or adjust the dial force setting value in the control module.
[0014] As an optional solution, the plurality of buttons are physical buttons or virtual buttons arranged on the display screen.
[0015] As an optional solution, it also includes a shell, the force measuring component is arranged in the shell, the force applying end of the paddle is arranged in the shell, the action end of the paddle is arranged outside the shell, and the display screen is arranged at the opening of the shell.
[0016] As an optional solution, at least a portion of the paddle located within the housing is provided with a buffer pad.
[0017] As an optional solution, a power supply is installed in the housing, and the power supply is electrically connected to the force measuring component and the display screen respectively.
[0018] The beneficial effects of the utility model are:
[0019] The utility model proposes a device for detecting the welding strength of the pole piece, wherein the force measuring component detects the pulling force of the action end of the paddle, and the display screen displays the value of the pulling force of the paddle detected by the force measuring component. When detecting whether the welding between the pole piece and the bus is stable, the action end of the paddle is inserted into the welding part of the pole piece, and the action end of the paddle moves the pole piece in a direction away from the bus. According to whether the pole piece and the bus are separated, it can be accurately judged whether the welding between the pole piece and the bus is stable. Since the display screen can display the value of the pulling force of the paddle, the magnitude of the pulling force of the paddle can be accurately controlled according to the value displayed on the display screen, avoiding the pulling force of the paddle being too large or too small, ensuring the stability of the pulling force of the paddle, and improving the detection accuracy. At the same time, it avoids the scrapping of the detected sample due to excessive pulling force, reduces the detection cost, and realizes all detection to avoid missed detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of a tab welding strength detection device provided by an embodiment of the utility model;
[0021] Figure 2 It is a cross-sectional view of the welding point where the pick is inserted into the tab and the busbar provided by the embodiment of the utility model;
[0022] Figure 3 It is a structural decomposition schematic diagram of an ear welding strength detection device provided by an embodiment of the present utility model.
[0023] The names and labels of the components in the figure are as follows:
[0024] 10. Ear; 20. Busbar; 30. Welding point;
[0025] 1. Housing; 11. Opening; 12. Button;
[0026] 2. Force measuring component; 21. Force measuring sensor; 22. Control module;
[0027] 3. Paddle;
[0028] 4. Display screen;
[0029] 5. Holding part; 51. Flat surface;
[0030] 6. Buffer pad. Detailed implementation mode
[0031] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below in conjunction with the drawings and through specific implementation modes. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.
[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0034] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0035] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.
[0036] The existing method for testing the welding strength of the tabs is usually the tensile test method. When manually moving the tabs, it is difficult to control the force. Even if the tabs are well welded to the busbars, there is a possibility that the tabs will break due to excessive force when moving by hand, resulting in inaccurate test results and sample scrapping. Moreover, the tensile test method is a destructive test and can only be used for random inspection, which is prone to missed inspections.
[0037] To solve the above problems, Figure 1 and Figure 2 As shown, this embodiment proposes a pole lug welding strength detection device, which includes a shell 1, a force measuring component 2, a paddle 3 and a display screen 4. The force measuring component 2 is installed in the shell 1, and the paddle 3 includes a force applying end and an action end. The action end can act on the welding part of the pole lug 10 to apply a paddle force.
[0038] In one embodiment, the force-applying end of the paddle 3 is disposed inside the housing 1, the action end of the paddle 3 is disposed outside the housing 1, and the display screen 4 is disposed at the opening 11 of the housing 1. The force measuring component 2 is connected to the force-applying end to obtain the plucking force.
[0039] In one embodiment, the display screen 4 is installed at the opening 11 of the housing 1 , the force measuring assembly 2 is electrically connected to the display screen 4 , and the display screen 4 can display the value of the plucking force of the paddle 3 detected by the force measuring assembly 2 .
[0040] When detecting whether the tab 10 is firmly welded to the bus bar 20, the acting end of the paddle 3 is inserted into the welding part of the tab 10 (the position where the welding point 30 of the tab 10 and the bus bar 20 is located), and the acting end of the paddle 3 moves the tab 10 in a direction away from the bus bar 20 (as Figure 2 shown by the arrow in
[0041] Figure 2 ). Only for example, the acting end of the paddle 3 can act on the gap between the tabs 10 to apply a pushing force to the tabs 10, or can act between the tab 10 and the bus bar 20 to apply a force; the specific force application position and force application direction are subject to the actual detection requirements and are not limited thereto.
[0042] Since the display screen 4 can display the value of the pushing force of the paddle 3, the size of the pushing force of the paddle 3 is accurately controlled according to the value displayed on the display screen 4, avoiding the pushing force of the paddle 3 being too large or too small, ensuring the stability of the pushing force of the paddle 3, and improving the detection accuracy. At the same time, it avoids the scrapping of the detected samples caused by too large a pushing force, reduces the detection cost, and can achieve all detections to avoid missed detections.
[0043] It should be noted that the above-mentioned paddle 3 is a thin steel sheet to ensure that the paddle 3 has high structural strength and avoid breakage of the paddle 3 during use. Since the thickness of the thin steel sheet is relatively thin, the acting end of the paddle 3 can be inserted into the welding point 30 between the tab 10 and the bus bar 20, and at the same time, the acting end of the paddle 3 has good elasticity to ensure elastic contact between the paddle 3 and the tab 10 to improve the protection of the tab 10. In other embodiments, the paddle 3 can also be made of other materials with a certain structural strength, such as plastic, etc. It should be noted that the length of the paddle 3 extending out of the housing 1, the width and thickness of the paddle 3 can all be flexibly adjusted according to the detection requirements and are not specifically limited herein.
[0044] As Figure 3 shown, the force measuring assembly 2 includes a force measuring sensor 21 and a control module 22, and the force applying end of the paddle 3 is connected to the force measuring sensor 21. The control module 22 is electrically connected to the force measuring sensor 21 and the display screen 4 respectively, and the control module 22 is configured to be able to read the signal of the force measuring sensor 21 and convert it into the value of the pushing force and transmit it to the display screen 4.
[0045] In a specific embodiment, the force measuring sensor 21 is a micro force sensor, and the micro force sensor can accurately detect the size of the pushing force of the paddle 3. At the same time, the structure of the micro force sensor is relatively small, reducing the internal space occupied by the housing 1 and realizing a compact installation.
[0046] The control module 22 is configured to receive and read the electrical signal of the pulling force detected by the force sensor 21, and convert the electrical signal into a numerical value of the force, so as to be displayed through the display screen 4. The control module 22 in this embodiment can be a microprocessor, etc. Since the control module 22 is a prior art, the working principle of the control module 22 will not be elaborated herein.
[0047] As Figure 1 and Figure 3 shown, a plurality of buttons 12 are provided on the housing 1, and the plurality of buttons 12 are all electrically connected to the control module 22. The plurality of buttons 12 at least include a power key, a menu key, an up arrow key, and a down arrow key. The power key is used to control the opening and closing of the display screen 4.
[0048] The menu key can be used at least to retrieve the detection records of the tab welding strength detection device, and to retrieve the interface for modifying and / or adding the pulling force setting. The up arrow key and the down arrow key can be used at least to page up and down, and to set or adjust the pulling force setting value in the control module 22.
[0049] Of course, the number and functions of the buttons 12 can be flexibly adjusted according to the usage requirements, and no specific limitation is made herein. By providing the buttons 12, it is convenient to flexibly perform operations such as opening and closing the tab welding strength detection device and adjusting the magnitude of the pulling force, improving the simplicity of the operation.
[0050] Furthermore, the plurality of buttons 12 are physical buttons or virtual buttons provided on the display screen 4. The buttons 12 in this embodiment are physical buttons, so as to facilitate the user to accurately press the physical buttons. In other embodiments, the display screen 4 has a touch screen function to display virtual buttons on the display screen 4, saving the space occupied by the buttons 12.
[0051] Specifically, an opening 11 is formed on the same side surface of the housing 1, and the display screen 4 is embedded and installed at the opening 11. A plurality of buttons 12 are provided on one side of the display screen 4, achieving the centralized distribution of the plurality of buttons 12, which is convenient for the detection personnel to quickly press the buttons 12 with different functions.
[0052] The power key in this embodiment can be one or two. When the power key is one, pressing the power key once can turn on the display screen 4, and pressing the power key again can turn off the display screen 4. When the power key is two, pressing one of the power keys can turn on the display screen 4, and pressing the other power key can turn off the display screen 4.
[0053] In one embodiment, pressing the menu key can retrieve the detection records of the tab welding strength detection device. By using the up arrow key and the down arrow key, the detection records of this batch or multiple batches of welding strength can be queried, so as to obtain the product yield, and the defective products can be separated in time according to the ID of the defective products for defect analysis and repair.
[0054] In one embodiment, pressing the menu key can call up the interface for modifying and / or adding a new dial force setting; when the model of the product to be tested is changed, or the product testing standard is changed, it involves the addition or change of the dial force setting value. The interface for modifying and / or adding a new dial force setting is called up by the menu key, and the change of the dial force setting value is completed by using the up key or down key, or the new dial force setting option is selected by using the up key or down key to complete the setting of the corresponding dial force value.
[0055] In a preferred embodiment, the plurality of buttons 12 further include a confirmation button and a return button, etc., which can confirm the set value after the setting is completed, and the return button can be used to exit the current setting interface.
[0056] Of course, the number of buttons 12 and their corresponding functions can be flexibly set according to usage requirements, and the number and distribution positions of the buttons 12 are not specifically limited here.
[0057] In one embodiment, the display screen 4 displays the magnitude of the reference value while displaying the numerical value of the pulling force. When detecting whether the welding between the tab 10 and the bus 20 is stable, the active end of the paddle 3 is inserted into the position of the welding point 30 between the tab 10 and the bus 20, and the paddle 3 moves the tab 10 in a direction away from the bus 20. At this time, the magnitude of the pulling force of the paddle 3 is accurately controlled according to the reference value displayed on the display screen 4, so that the actual pulling force is within the range of the reference value, avoiding the pulling force of the paddle 3 being too large or too small, ensuring the stability of the pulling force of the paddle 3, and improving the detection accuracy.
[0058] Furthermore, if Figure 2 As shown, at least part of the paddle 3 located inside the housing 1 is provided with a buffer pad 6. By providing the buffer pad 6, when the paddle 3 is moving the tab 10, a slight bending deformation will occur, and the buffer pad 6 can play a buffering role, preventing the deformed paddle 3 from squeezing the force measuring assembly 2 and the display screen 4 and other components inside the housing 1, thereby enhancing the protection of the force measuring assembly 2 and the display screen 4 and other components, and improving the safety of the detection process.
[0059] Specifically, the buffer pad 6 of this embodiment is foam, and at least part of the plectrum 3 located in the housing 1 is wrapped or bonded with foam. The wrapping or bonding method enables rapid assembly of the foam, improves the connection strength between the foam and the plectrum 3, and at the same time, the foam is light in weight, easy to install and practical. In addition, the foam has good elasticity and can better buffer and absorb the bending deformation of the plectrum 3. In other embodiments, the buffer pad 6 can also be an elastic pad such as a rubber pad, which is not specifically limited here.
[0060] It should be noted that a power supply is installed in the housing 1, and the power supply is electrically connected to the force measuring assembly 2 and the display screen 4, respectively, to supply power to the force measuring assembly 2 and the display screen 4. By installing a power supply in the housing 1, the tab welding strength detection device does not need an external power supply, which facilitates the flexible use or movement of the tab welding strength detection device, realizes independent power supply for the tab welding strength detection device, enables the tab welding strength detection device to be used in scenarios without an external power supply, and expands the application scenarios of the tab welding strength detection device.
[0061] The power source is a button battery, which has high safety performance, small size, and is easy to install and use. The power source can be quickly replaced by disassembling the housing 1. In other embodiments, the power source can also be a secondary battery, which does not need to be disassembled and replaced, and only needs to be charged in time.
[0062] Of course, the lug welding strength detection device can also choose to be powered by an external power supply alone, or the lug welding strength detection device can also simultaneously choose to use an external power supply and a built-in power supply to achieve double-layer power supply. At this time, the built-in power supply can be a backup power supply. When the external power supply fails or a power outage occurs, the built-in power supply can be enabled in time, thereby improving the stability of the power supply of the lug welding strength detection device.
[0063] like Figure 1 and Figure 3 As shown, a gripping portion 5 is provided on the housing 1. By adding the gripping portion 5, it is convenient for the inspector to hold the gripping portion 5 with his hand to stably use the tab welding strength inspection device. The gripping portion 5 is connected to the force-applying end of the plectrum 3, so that force is applied to the plectrum 3 so that the action end of the plectrum 3 generates a plucking force.
[0064] Specifically, the gripping portion 5 is a plastic column, one axial end of which is connected to the housing 1, making it easier for the inspector to hold the device. At the same time, the plastic column can be a nylon column or other plastic material, so that the gripping portion 5 has high structural strength and light weight, reducing the total weight of the tab welding strength detection device and improving the user experience of the inspector.
[0065] In this embodiment, after the tab 10 is tested, the area where the tab 10 contacts the paddle 3 is easily warped due to the force of the paddle, which affects the normal use of the tab 10. Therefore, the grip 5 has a flat surface 51, which can flatten the tab 10 after the test. By using the flat surface 51 to press and flatten the warped edge of the tab 10, the tab 10 is ensured to have good flatness.
[0066] The above embodiments only illustrate the basic principles and characteristics of the present utility model. The present utility model is not limited by the above embodiments. Without departing from the spirit and scope of the present utility model, various changes and modifications can be made to the present utility model, and all such changes and modifications fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.
Claims
1. An ear welding strength detection device, characterized in that, It includes a force measuring component (2), a paddle (3) and a display screen (4). The paddle (3) includes a force application end and an acting end. The acting end can act on the tab welding part to apply a pushing force. The force measuring component (2) is connected to the force application end to obtain the pushing force. The display screen (4) is connected to the force measuring component (2) to display the value of the pushing force.
2. The tab welding strength detection device according to claim 1, wherein It further includes a holding part (5), and the holding part (5) is connected to the force application end of the paddle (3).
3. The ear welding strength detection device according to claim 2, wherein An even plane (51) is provided on the holding part (5), and the even plane (51) is configured to be able to flatten the detected tab (10).
4. The tab welding strength detection device according to claim 1, characterized in that, The force measuring component (2) includes: A force measuring sensor (21), and the force application end is connected to the force measuring sensor (21); A control module (22), the control module (22) is electrically connected to the force measuring sensor (21) and the display screen (4) respectively. The control module (22) is configured to be able to read the pressure signal of the force measuring sensor (21) and convert it into a pushing force value and transmit it to the display screen (4).
5. The tab welding strength detection device according to claim 4, wherein, It further includes a plurality of buttons (12), and the plurality of buttons (12) are all electrically connected to the control module (22); the plurality of buttons (12) at least include a power on / off button, a menu button, an up arrow key and a down arrow key.
6. The ear welding strength detection device according to claim 5, wherein The power on / off button is used to control the opening and closing of the display screen (4); the menu button can at least be used to retrieve the detection records of the tab welding strength detection device, and retrieve the interface for modifying and / or adding the pushing force setting. The up arrow key and the down arrow key can at least be used for page up and down, and set or adjust the pushing force setting value in the control module (22).
7. The tab welding strength detection device according to claim 5, characterized in that, The plurality of buttons (12) are physical buttons or virtual buttons provided on the display screen (4).
8. The ear welding strength detection device according to claim 1, characterized in that, It further includes a housing (1). The force measuring component (2) is arranged inside the housing (1). The force application end of the paddle (3) is arranged inside the housing (1), and the acting end of the paddle (3) is arranged outside the housing (1). The display screen (4) is arranged at the opening (11) of the housing (1).
9. The tab welding strength detection device according to claim 8, wherein, At least a part of the paddle (3) located inside the housing (1) is installed with a buffer pad (6).
10. The tab welding strength detection device according to claim 8, characterized in that A power supply is installed inside the housing (1), and the power supply is electrically connected to the force measuring component (2) and the display screen (4) respectively.