Constant-temperature hole ironing needle device for lithium battery
By using a combination of ceramic needle body, electric heating rod and temperature probe in the lithium battery constant temperature hot needle device, the problem of temperature consistency difference between traditional hot needle body is solved, and high-quality constant temperature control of lithium battery hot hole is achieved. Ensure the quality of the iron hole and the safety of the diaphragm.
Patent Information
- Application Number
- CN202420649317.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-01
AI Technical Summary
During the lithium battery production process, when the traditional iron needle body structure is used on diaphragms of different materials and thicknesses, the temperature consistency difference causes the iron hole to shrink or loosen, and there is a problem of bad core insertion and invalid iron holes.
The lithium battery constant temperature hot-hole needle device including ceramic needle body, electric heating rod, temperature probe, current amplification circuit and controller is adopted. Through the uniform distribution of multiple electric heating rods and the setting of temperature probes, the precise temperature monitoring and adjustment is achieved. Ensure constant temperature control.
Effectively control the temperature, ensure the quality of the ironing holes, prevent the ironing hole failure or diaphragm damage caused by uneven temperature, and achieve high-quality constant temperature ironing operation.
Smart Images
Figure CN222243189U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lithium batteries, in particular to a constant temperature perforating needle device for lithium batteries. Background Art
[0002] In the production process of lithium batteries, after the electrode is rolled up, in order to meet the needs of the negative electrode welding of the lithium battery, it is often necessary to perform hot-dip welding on the lithium battery electrode core. The traditional hot-dip welding adopts a needle body structure, and the needle body is directly powered and heated. The temperature consistency varies greatly during needle withdrawal, long-term shutdown, and continuous operation. As a result, when hot-dip welding is used on diaphragms of different materials and thicknesses, the hot-dip position in the center of the pre-roll is severely contracted or the holes are abnormally scattered, resulting in problems such as damaged core and ineffective hot-dip welding. Summary of the invention
[0003] The utility model provides a lithium battery constant temperature perforating needle device which has a simple and compact structure and can effectively control the overall temperature to meet the needs of constant temperature and high-quality perforating operations.
[0004] The technical solution adopted by the utility model is: a lithium battery constant temperature perforating needle device, characterized in that it includes a ceramic needle tube body, an electric heating rod, a temperature probe, a current amplifying circuit and a controller, the electric heating rod is inserted into the ceramic needle tube body from back to front, the temperature probe is arranged in the front part of the ceramic needle tube body, the electric heating rod is connected to the controller via the current amplifying circuit, and the temperature probe is connected to the controller.
[0005] The electric heating rod is coaxially connected to the ceramic needle tube body.
[0006] A lithium battery constant temperature perforating needle device, characterized in that it includes a ceramic needle tube body, an electric heating rod, a temperature probe, a current amplifying circuit and a controller, two or more electric heating rods are evenly distributed around the central circumference of the ceramic needle tube body and penetrate into the ceramic needle tube body from back to front, the temperature probe is arranged in the front part of the ceramic needle tube body, the electric heating rod is connected to the controller via the current amplifying circuit, and the temperature probe is connected to the controller.
[0007] The ceramic needle tube body is provided with a heating rod channel, and the electric heating rod is inserted in the heating rod channel.
[0008] The ceramic needle tube body is provided with a temperature probe channel, and more than one temperature probe is inserted in the temperature probe channel.
[0009] The front outer wall of the ceramic needle tube body is provided with more than one through hole along the axial direction, and the through hole is connected to the temperature probe channel.
[0010] The temperature probe is staggered at the through hole position in the temperature probe channel, or the temperature probe is at the corresponding through hole position in the temperature probe channel.
[0011] An electric heating rod is arranged between any two electric heating rods at the middle position of the evenly distributed circle.
[0012] The front end of the ceramic needle tube body is a right truncated cone structure.
[0013] The right circular frustum structure is a metal structure, and the right circular frustum structure is embedded and connected to the front end of the ceramic needle tube body.
[0014] The beneficial effects of the utility model are as follows: a plurality of evenly distributed electric heating rods are used to better control the temperature adjustment range and constant temperature control, and temperature probes are arranged between the evenly distributed rods, so as to more accurately monitor the heating temperature of the ceramic needle tube body, and the smooth surface of the ceramic needle tube body can prevent scratches on the diaphragm, while having higher constant temperature performance; the temperature of the ceramic needle tube body is detected by the temperature probe, and the current is adjusted under the control of the controller to maintain the temperature of the electric heating rod within the set range, thereby realizing constant temperature control of the entire device, thereby ensuring that the constant temperature perforating needle is not affected by other factors under the set operating trajectory to achieve the best perforating state. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 for Figure 1 Cross-sectional view of .
[0017] In the figure: a ceramic needle tube body 1, a metal regular circular cone 2, a controller 3, a current amplifying circuit 4, a heating rod channel 5, an electric heating rod 6, a temperature probe channel 7, and a temperature probe 8. DETAILED DESCRIPTION
[0018] The following is a further description with reference to the accompanying drawings.
[0019] Figure 1 As shown: a lithium battery constant temperature perforating needle device, including a ceramic needle body 1, a metal right circular cone 2, a control circuit 3, a current amplifying circuit 4, an electric heating rod 6, and a temperature probe 8. The front end of the ceramic needle body 1 is embedded with a metal right circular cone 2, and the ceramic needle body 1 has two axial heating rod channels 5 toward the rear end. The heating rod channels 5 are evenly distributed around the central circumference of the ceramic needle body and the electric heating rod 6 is penetrated from the back to the front inside. The electric heating rod 6 is externally connected to the current amplifying circuit 4, and the current amplifying circuit 4 is connected to the controller 3; the ceramic needle body 1 has an axial temperature probe channel 7 toward the rear end, and the temperature probe channel 7 is located in the middle of the two evenly distributed circumferences of the heating rod channels 5. The temperature probe 8 is penetrated in the temperature probe channel 7, and the temperature probe 8 is connected to the controller 3.
[0020] After power is turned on, the electric heating rod generates heat. The controller receives the signal from the temperature probe and adjusts the current through the controller or the current amplifier according to the preset temperature, thereby maintaining the temperature of the electric heating rod within the set range and achieving constant temperature control, thereby ensuring that the perforation needle is not affected by the environment of needle withdrawal, long-term shutdown, and continuous operation, which may cause perforation failure or damage to the diaphragm due to uneven temperature.
[0021] Based on the above embodiment, a plurality of temperature probes may be arranged in the temperature probe channel 7 along the axial direction of the ceramic needle tube body 1 .
[0022] Based on the above embodiment, more than one through hole can be axially arranged on the front outer wall of the ceramic needle tube body, and the through hole is connected to the temperature probe channel; the temperature probe is staggered in the temperature probe channel, or the temperature probe is located in the corresponding through hole position in the temperature probe channel.
Claims
1. A lithium battery constant temperature perforation needle device, characterized in that: It includes a ceramic needle tube body, an electric heating rod, a temperature probe and a controller. The electric heating rod is inserted into the ceramic needle tube body from back to front, the temperature probe is arranged in the front part of the ceramic needle tube body, the electric heating rod is connected to the controller through a current amplification circuit, and the temperature probe is connected to the controller.
2. The lithium battery constant temperature perforation needle device according to claim 1 is characterized in that: The electric heating rod is coaxially connected to the ceramic needle tube body.
3. A lithium battery constant temperature perforation needle device, characterized in that: It includes a ceramic needle tube body, an electric heating rod, a temperature probe, and a controller. Two or more electric heating rods are evenly distributed around the central circumference of the ceramic needle tube body and penetrate into the ceramic needle tube body from back to front. The temperature probe is arranged in the front part of the ceramic needle tube body. The electric heating rods are connected to the controller through a current amplification circuit, and the temperature probe is connected to the controller.
4. The lithium battery constant temperature perforation needle device according to claim 1, 2 or 3, characterized in that: The ceramic needle tube body is provided with a heating rod channel, and the electric heating rod is inserted in the heating rod channel.
5. The lithium battery constant temperature perforation needle device according to claim 1 or 3, characterized in that: The ceramic needle tube body is provided with a temperature probe channel, and more than one temperature probe is inserted in the temperature probe channel.
6. The lithium battery constant temperature perforation needle device according to claim 5, characterized in that: The front outer wall of the ceramic needle tube body is provided with more than one through hole along the axial direction, and the through hole is connected to the temperature probe channel.
7. The lithium battery constant temperature perforation needle device according to claim 6, characterized in that: The temperature probe is staggered at the through hole position in the temperature probe channel, or the temperature probe is at the corresponding through hole position in the temperature probe channel.
8. The lithium battery constant temperature perforation needle device according to claim 3, characterized in that: An electric heating rod is arranged between any two electric heating rods at the middle position of the evenly distributed circle.
9. The lithium battery constant temperature perforation needle device according to claim 1 or 3, characterized in that: The front end of the ceramic needle tube body is a right truncated cone structure.
10. The lithium battery constant temperature perforation needle device according to claim 9, characterized in that: The right circular frustum structure is a metal structure, and the right circular frustum structure is embedded and connected to the front end of the ceramic needle tube body.