Combined open-loop current sensor structure
By designing a combined structure of Hall element, magnetic ring, shielding layer and heat dissipation fins, the problems of poor magnetic field concentration and poor heat dissipation in traditional Hall current sensors are solved, achieving higher accuracy and stable current measurement.
Patent Information
- Application Number
- CN202423156148.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Traditional open-loop Hall current sensors suffer from poor magnetic field focusing, low measurement accuracy, especially large errors during high current measurements, and poor heat dissipation.
It adopts a combined structure, including the design of Hall element, magnetic ring, shielding layer and heat sink fins. The magnetic ring concentrates the magnetic field to increase magnetic induction density, the shielding layer reduces electromagnetic interference, and the heat sink fins improve heat dissipation performance.
It improves the accuracy of magnetic flux density measurement and the stability of the sensor, reduces the influence of external electromagnetic interference, ensures efficient heat dissipation of the sensor, and achieves more efficient current measurement.
Smart Images
Figure CN223711692U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electronic component equipment technical field especially relates to a combined open loop current sensor structure. BACKGROUND
[0002] In recent years, with the development of Hall effect elements, open loop current sensors based on Hall elements have gradually attracted attention. Hall elements can directly measure magnetic field intensity and convert it into an electrical signal, thereby achieving non-contact current measurement.
[0003] However, traditional open loop Hall current sensors usually have poor magnetic field aggregation effect, low measurement accuracy and other problems, especially when measuring large currents, the magnetic induction density detected by the Hall element is low, resulting in large measurement errors.
[0004] Therefore, a combined open loop current sensor structure is proposed to solve the above problems. UTILITY MODEL CONTENT
[0005] In order to make up for the above shortcomings, the utility model provides a kind of combined open loop current sensor structure, to improve the problem that the magnetic induction density detected by Hall element is low and error and poor heat dissipation when working.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of combined open loop current sensor structure, including Hall element, the Hall element one end is provided with connecting component, the Hall element outside is provided with combination component;
[0007] The combination component includes a shell, the shell is inserted with magnetic ring inside, the magnetic ring outside is fixedly connected with multiple clamping blocks, the shell outside is provided with shielding component, the shell bottom is provided with heat dissipation component, the shell inside is provided with fixed component.
[0008] As a further description of the above technical scheme:
[0009] The connecting component includes a pin, the pin one end is fixedly connected in the Hall element side, the pin end away from the Hall element is provided with protection component.
[0010] As a further description of the above technical scheme:
[0011] The shielding component includes a shielding layer, and the shielding layer is fixedly connected to the outer periphery of the shell.
[0012] As a further description of the above technical scheme:
[0013] The heat dissipation component includes a heat dissipation fin, and the heat dissipation fin is fixedly connected to the bottom of the shielding layer.
[0014] As a further description of the above technical solutions:
[0015] The protection assembly comprises a protection plate, which is arranged on the side of the pin away from the Hall element.
[0016] As a further description of the above technical solutions:
[0017] The fixing assembly comprises a plurality of rubber protrusions, and the clamping block is clamped between two rubber protrusions.
[0018] As a further description of the above technical solutions:
[0019] The Hall element is inserted into the magnetic ring.
[0020] As a further description of the above technical solutions:
[0021] The pin is slidably connected to the inside of the shell.
[0022] The utility model has the advantages of the following beneficial effects:
[0023] 1. In the utility model, the linear Hall element is inserted into the magnetic ring that converges current, the open type thin magnetic ring converges the magnetic field, the linear Hall device can detect higher magnetic induction density, thereby more accurately measuring the current. The structure is not only convenient to assemble, low in cost and high in efficiency.
[0024] 2. In the utility model, a plurality of rubber protrusions are arranged in the shell, and a clamping block is arranged on the outside of the magnetic ring. When the magnetic ring is inserted into the shell, the clamping block is clamped between two rubber protrusions, thereby ensuring the stability between the magnetic ring and the shell and ensuring the sealing property.
[0025] 3. In the utility model, the shielding layer is fixed on the outside of the shell, thereby significantly reducing the influence of external electromagnetic interference on the combined open loop current sensor element, thereby improving the measurement accuracy and stability of the sensor.
[0026] 4. In the utility model, the heat dissipation fins are arranged on the bottom of the shell, thereby significantly improving the heat dissipation performance of the combined open loop current sensor, ensuring that the generated heat can be rapidly conducted to the external environment, thereby avoiding affecting the normal work of the element. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 The utility model provides a kind of combined open loop current sensor structure's three-dimensional schematic view;
[0028] Figure 2 The utility model provides a kind of combined open loop current sensor structure's explosion structure schematic view;
[0029] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.
[0030] Legend:
[0031] 1. Protection board; 2. Pins; 3. Hall element; 4. Housing; 5. Heat sink fins; 6. Card block; 7. Shielding layer; 8. Magnetic ring; 9. Rubber bump. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a combined open-loop current sensor structure, including a Hall element 3, a connecting component at one end of the Hall element 3, and a combined component on the outside of the Hall element 3.
[0034] The assembly includes a housing 4, a magnetic ring 8 inserted inside the housing 4, multiple locking blocks 6 fixedly connected to the outside of the magnetic ring 8, a shielding assembly on the outside of the housing 4, a heat dissipation assembly at the bottom of the housing 4, and a fixing assembly inside the housing 4. The Hall element 3 is the core component, used to detect changes in the magnetic field and convert them into electrical signals. The housing 4 is used to enable the linear Hall device to detect higher magnetic field density, thereby measuring the current flowing through more accurately. The magnetic ring 8 is used to concentrate the magnetic field. The locking blocks 6 and rubber protrusions 9 cooperate to fix the magnetic ring 8 and the housing 4.
[0035] Reference Figure 1 - Figure 3 The connection component includes pin 2, one end of which is fixedly connected to one side of the Hall element 3, and the end of pin 2 away from the Hall element 3 is provided with a protective component. Pin 2 is used to connect to the Hall element 3.
[0036] Reference Figure 1 - Figure 3 The shielding assembly includes a shielding layer 7, which is fixedly connected to the outer periphery of the housing 4. The shielding layer 7 is used to reduce external electromagnetic interference and improve measurement accuracy.
[0037] Reference Figure 1 and Figure 2The heat dissipation component includes heat dissipation fins 5, which are fixedly connected to the bottom of the shielding layer 7. The heat dissipation fins 5 are used to accelerate heat conduction and ensure that the components operate within the normal temperature range.
[0038] Reference Figure 1 - Figure 3 The protection component includes a protection plate 1, which is located on the side of pin 2 away from Hall element 3. The protection plate 1 is used to protect pin 2.
[0039] Working principle: When the magnetic ring 8 is inserted into the housing 4, the locking block 6 on the magnetic ring 8 will engage between the two rubber protrusions 9 inside the housing 4, allowing the Hall element 3 to detect a higher magnetic flux density, thereby more accurately measuring the current flowing through it. This structure is not only easy to assemble, low in cost, and highly efficient, but also ensures the stability between the magnetic ring 8 and the housing 4, as well as the sealing performance. The fixed shielding layer 7 on the outside of the housing 4 can significantly reduce the impact of external electromagnetic interference on the combined open-loop current sensor element, thereby improving the measurement accuracy and stability of the sensor. The heat dissipation fins 5 at the bottom of the housing 4 can significantly improve the heat dissipation performance of the combined open-loop current sensor, ensuring that the generated heat can be quickly conducted to the external environment, thereby avoiding affecting the normal operation of the element.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A combined open-loop current sensor structure comprising a Hall element (3), characterized in that: One end of the Hall element (3) is provided with a connecting assembly, and the outer side of the Hall element (3) is provided with a combination assembly. The combination assembly comprises a shell (4), the shell (4) is inserted with a magnetic ring (8) inside, a plurality of clamping blocks (6) are fixedly connected to the outer side of the magnetic ring (8), a shielding assembly is arranged on the outer side of the shell (4), a heat dissipation assembly is arranged at the bottom of the shell (4), and a fixing assembly is arranged inside the shell (4).
2. A combined open-loop current sensor structure according to claim 1, characterized in that: The connecting assembly comprises a pin (2), one end of the pin (2) is fixedly connected to one side of the Hall element (3), and the end of the pin (2) away from the Hall element (3) is provided with a protection assembly.
3. A combined open-loop current sensor structure according to claim 1, characterized in that: The shielding assembly comprises a shielding layer (7), and the shielding layer (7) is fixedly connected to the outer periphery of the shell (4).
4. A combined open-loop current sensor structure according to claim 3, characterized in that: The heat dissipation assembly comprises a heat dissipation fin (5), and the heat dissipation fin (5) is fixedly connected to the bottom of the shielding layer (7).
5. A combined open-loop current sensor structure according to claim 2, characterized in that: The protection assembly comprises a protection plate (1), and the protection plate (1) is arranged on the side of the pin (2) away from the Hall element (3).
6. The combination open-loop current sensor structure of claim 1, wherein: The fixing assembly comprises a plurality of rubber protrusions (9), and the clamping block (6) is clamped between two rubber protrusions (9).
7. The combination open-loop current sensor structure of claim 1, wherein: The Hall element (3) is inserted into the magnetic ring (8).
8. The combination open-loop current sensor structure of claim 2, wherein: The outer side of the pin (2) is slidingly connected inside the shell (4).