Detection structure for battery cell tab heavy sheet
By installing ultrasonic sensors and control modules on the upper and lower sides of the tabs at both ends of the lithium-ion battery cell, the problem of detection error in the vision system is solved, enabling timely identification of excess tab pieces and ensuring the safe flow of the battery cell into the next stage of production.
Patent Information
- Application Number
- CN202520173452.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-24
AI Technical Summary
In the existing technology, during the lithium-ion battery production process, the vision system may have errors in detecting the weight of the electrode tabs, which may cause the cells with the weighted electrode tabs to flow into the formation stage, posing a safety risk.
An ultrasonic weighing sensor is used to detect the weighing status of the tabs on both sides of the battery cell. The controller and control module display the weighing status of the tabs in real time. The tabs are suspended in the air by a fixture to facilitate detection.
This enabled timely identification of the tabs, avoiding safety risks and ensuring the safe flow of battery cells to the next stage of production.
Smart Images
Figure CN223883527U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of battery cell, especially to a detection structure of battery cell tab heavy piece. BACKGROUND
[0002] In the production process of lithium ion battery, the battery cell needs to be welded at the end, and in the process of welding the tab of the battery cell, the phenomenon of tab repeated welding may occur, and the tab may be welded for 2-3 times. The battery cell with tab heavy piece flows into the formation section, which has a major safety risk and is easy to cause short circuit and fire of the battery cell. In the prior art, a welding visual system is usually used to detect the tab heavy piece, but there is an error in observing whether the battery cell has the tab heavy piece phenomenon only by the visual system, and the battery cell with tab heavy piece may still flow into the formation section. SUMMARY
[0003] The utility model discloses a detection structure of battery cell tab heavy piece, which overcomes the defects in the prior art.
[0004] The utility model discloses a detection structure of battery cell tab heavy piece, which overcomes the defects in the prior art.
[0005] A detection structure of battery cell tab heavy piece, comprising: a battery cell, an inductor, a controller and a control module, the end of the battery cell is welded with a tab, the inductor is used to detect whether the tab is heavy, the controller is used to receive the feedback of the inductor and transmit to the control module, and the control module is used to display the heavy piece condition of the tab of the battery cell.
[0006] In one embodiment, the two ends of the battery cell are welded with tabs, the tabs at the two ends of the battery cell are positive and negative tabs respectively, and the inductor, the controller and the control module are arranged at the tabs at the two ends of the battery cell.
[0007] In one embodiment, the inductor is an ultrasonic heavy piece inductor.
[0008] In one embodiment, the inductor comprises a transmitter and a receiver, the transmitter is located at the top of the tab, the receiver is located at the bottom of the tab, and the transmitter and the receiver are fixed to the upper and lower sides of the tab respectively.
[0009] In one embodiment, the inductor is electrically connected with the controller, and the controller is electrically connected with the control module.
[0010] In one embodiment, the control module comprises a signal receiving module and a conversion module, the signal receiving module is used to receive the signal transmitted by the controller, and the conversion module is used to convert the signal and store it in the control module.
[0011] In one embodiment, the control module further comprises a digital display module for displaying the number of the tabs.
[0012] In one embodiment, the control module is further provided with a plurality of indicator lights, and the plurality of indicator lights are single-tab indicator lights and multi-tab indicator lights respectively.
[0013] In one embodiment, the control module is a PLC control device.
[0014] In one embodiment, a jig is further included, the jig is provided with a receiving groove, the battery cell is accommodated in the receiving groove, the jig is provided with a bearing platform relative to both sides of the receiving groove, the tabs at both ends of the battery cell are respectively placed in suspension on the two bearing platforms, the transmitter of the inductor is fixed on the top of the tab, and the receiver of the inductor is placed on the bearing platform and connected with the tab.
[0015] Compared with the prior art, the detection structure of the battery cell tab has at least the following advantages:
[0016] The detection structure of the battery cell tab can detect the tab at both ends of the battery cell after the tab is welded at both ends of the battery cell, can sense and display on the control module through the inductor, and can identify the battery cell with tab in time, so that the safety risk of the battery cell flowing into the formation section can be avoided. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment.
[0018] Figure 1 The structural diagram of the detection structure of the battery cell tab provided by the utility model is shown.
[0019] BRIEF DESCRIPTION OF DRAWINGS: 10, battery cell;11, tab;20, inductor;21, transmitter;22, receiver;30, controller;40, control module;41, digital display module;42, indicator light;50, jig;51, receiving groove;52, bearing platform. DETAILED DESCRIPTION
[0020] In order to facilitate understanding of the utility model, the following will be more comprehensive description of the utility model with reference to the related drawings.
[0021] The detection structure of the battery cell tab, with reference to Figure 1, including the battery cell 10, the sensor 20, the controller 30 and the control module 40, the end of the battery cell 10 is welded with the tab 11, the sensor 20 is used for detecting whether the tab 11 is a heavy piece, the controller 30 is used for receiving the feedback of the sensor 20 and transmitting to the control module 40, and the control module 40 is used for displaying the heavy piece condition of the tab 11 of the battery cell 10.
[0022] With reference to Figure 1 , the two ends of the battery cell 10 are welded with the tabs 11, and the tabs 11 at the two ends of the battery cell 10 are positive tabs and negative tabs respectively. The sensor 20, the controller 30 and the control module 40 are arranged at the tabs 11 at the two ends of the battery cell 10. In this way, the positive tab 11 and the negative tab 11 at the two ends of the battery cell 10 can be detected simultaneously to detect whether the positive tab 11 and the negative tab 11 appear the heavy piece phenomenon.
[0023] Further, with reference to Figure 1 , the sensor 20 is an ultrasonic heavy piece sensor. The ultrasonic heavy piece sensor 20 is used for detecting the thickness of the tab 11, so as to detect whether the tab 11 is a heavy piece.
[0024] Further, with reference to Figure 1 , the sensor 20 includes the transmitter 21 and the receiver 22, the transmitter 21 is located at the top of the tab 11, and the receiver 22 is located at the bottom of the tab 11, and the transmitter 21 and the receiver 22 are fixed to the upper and lower sides of the tab 11 respectively to detect the heavy piece phenomenon of the tab 11.
[0025] Further, with reference to Figure 1 , the sensor 20 is electrically connected with the controller 30, the controller 30 is electrically connected with the control module 40, and the controller 30 is used for receiving the signal of the sensor 20 and transmitting to the control module 40.
[0026] Further, with reference to Figure 1 , the control module 40 includes the signal receiving module and the conversion module, the signal receiving module is used for receiving the signal transmitted by the controller 30, and the signal is converted by the conversion module to be stored in the control module 40. The control module 40 further includes the digital display module 41, the converted signal of the conversion module is transmitted to the digital display module 41 for display, and the digital display module 41 is used for displaying the number of the tab 11. It should be noted that when the number of the tab 11 is single, the number displayed on the digital display module 41 is 1, and when the tab 11 is a heavy piece, the number displayed on the digital display module 41 is the number of the tab 11.
[0027] Further, with reference to Figure 1The control module 40 is further provided with a plurality of indicator lights 42, which are single-pole ear indicator lights and multi-pole ear indicator lights, respectively.
[0028] Further, referring to Figure 1 The control module 40 is a PLC control device.
[0029] In an embodiment, referring to Figure 1 The detection structure of the cell pole ear piece further comprises a jig 50 for carrying the cell 10. The jig 50 is provided with a receiving groove 51 in the middle, and the cell 10 is accommodated in the receiving groove 51. The jig 50 is provided with a bearing platform 52 on both sides of the receiving groove 51, and the bearing platform 52 is used to carry the inductor 20 and the pole ear 11 of the cell 10. The pole ears 11 at both ends of the cell 10 are respectively placed in suspension on the two bearing platforms 52. It should be noted that the depth of the receiving groove 51 is less than the thickness of the cell 10, so that the pole ears 11 at both ends of the cell 10 can be placed in suspension on the two bearing platforms 52. The emitter 21 of the inductor 20 is fixed to the top of the pole ear 11, and the receiver 22 of the inductor 20 can be placed on the bearing platform 52 and connected with the bottom of the pole ear 11, so as to facilitate the detection of the pole ear 11.
[0030] The utility model discloses a detection structure of the cell pole ear piece, which is used for detecting the pole ear 11 of the cell 10 after the pole ear 11 is welded at both ends of the cell 10. The inductor 20 senses and displays on the control module 40, so as to identify the cell 10 with the pole ear 11 piece in time, and avoid the safety risk of the cell 10 flowing into the formation section.
[0031] The above-mentioned embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.
Claims
1. A detection structure of an electrode tab tabbing of an electric cell, characterized by, The utility model relates to a battery cell (10), inductor (20), controller (30) and control module (40), the end of battery cell (10) is welded with tab (11), inductor (20) is used to detect whether tab (11) is heavy piece, controller (30) is used to receive the feedback of inductor (20) and transmission to control module (40), control module (40) is used to show the heavy piece condition of the tab (11) of battery cell (10). The utility model relates to a battery cell (10), inductor (20), controller (30) and control module (40), the end of battery cell (10) is welded with tab (11), inductor (20) is used to detect whether tab (11) is heavy piece, controller (30) is used to receive the feedback of inductor (20) and transmission to control module (40), control module (40) is used to show the heavy piece condition of the tab (11) of battery cell (10).
2. The detection structure of the tab plate of the battery cell according to claim 1, wherein, The inductor (20) is an ultrasonic heavy piece inductor.
3. The detection structure of the tab plate of the battery cell according to claim 2, wherein, The inductor (20) includes a transmitter (21) and a receiver (22), the transmitter (21) is located at the top of the tab (11), the receiver (22) is located at the bottom of the tab (11), and the transmitter (21) and the receiver (22) are fixed to the upper and lower sides of the tab (11), respectively.
4. The detection structure of the tab plate of the battery cell according to claim 3, wherein, The inductor (20) is electrically connected to the controller (30), and the controller (30) is electrically connected to the control module (40).
5. The detection structure of the tab plate of the battery cell according to claim 1, wherein, The control module (40) includes a signal receiving module and a conversion module, the signal receiving module is used for receiving the signal transmitted by the controller (30), and the conversion module is used for converting the signal and storing it in the control module (40).
6. The detection structure of the tab plate of the battery cell according to claim 5, wherein, The control module (40) further includes a digital display module (41), and the digital display module (41) is used for displaying the number of tabs (11).
7. The detection structure of the tab plate of the battery cell according to claim 6, wherein, A plurality of indicator lights (42) are further arranged on the control module (40), and the plurality of indicator lights (42) are single-tab indicator lights and multi-tab indicator lights, respectively.
8. The detection structure of the tab plate of the battery cell according to claim 7, wherein, The control module (40) is a PLC control device.
9. The detection structure of the tab plate of the battery cell according to claim 8, wherein, The utility model further includes a jig (50), the jig (50) is provided with a receiving groove (51), the battery cell (10) is accommodated in the receiving groove (51), the jig (50) is provided with a bearing platform (52) on both sides of the receiving groove (51), the tabs (11) at both ends of the battery cell (10) are respectively placed on the two bearing platforms (52), the transmitter (21) of the inductor (20) is fixed to the top of the tab (11), and the receiver (22) of the inductor (20) is placed on the bearing platform (52) and connected with the tab (11).
10. The detection structure of an electrode tab of a battery cell according to claim 4, wherein,