Transformer integrated with current transformer
The integrated current transformer design addresses the space and heat issues in transformers by combining the transformer with the current sensor, enabling real-time monitoring and efficient heat dissipation.
Patent Information
- Application Number
- CN202422282576.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-19
AI Technical Summary
When adding independent external current transformers, existing transformers need to add PCB plug-in process, and the heat generation of coils leads to insufficient heat dissipation performance.
Design a transformer with integrated current transformer, integrate the current transformer with the transformer core, reduce the PCB plug-in process, and realize cooling air circulation through the core's heat dissipation port and fan to improve the heat dissipation performance.
Real-time monitoring of current changes is achieved, system stability and abnormal warning capabilities are improved, while reducing PCB plug-in processes and labor costs, and improving heat dissipation performance.
Smart Images
Figure CN223108637U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of transformers. Background Art
[0002] In the fields of optical storage and new energy, in order to ensure and monitor the smoothness of the transformer current, it is necessary to lead the wire of the coil in the transformer through the current transformer. The current change of the current transformer provides a voltage signal for the feedback circuit, so as to realize the real-time monitoring of the current change of the transformer, and further be more conducive to balancing the stability of the system and the early warning of abnormal conditions.
[0003] Based on the existing transformer, if an independent external current transformer is added, a larger area of PCB board is required, and the PCB plug-in process needs to be added during assembly; at the same time, heat generation will occur during the process of the coil inside the transformer passing through the current, resulting in heat accumulation. Therefore, it is necessary to optimize its heat dissipation performance on the basis of the existing structure. Summary of the Invention
[0004] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the utility model provides a transformer integrated with a current transformer, which reduces the additional PCB plug-in process of the current transformer and improves the heat dissipation capacity.
[0005] Technical Solution: To achieve the above object, a transformer integrated with a current transformer of the utility model includes an upper iron core disk, a lower iron core disk and a coil skeleton. The upper iron core disk and the lower iron core disk are respectively buckled on the upper and lower sides of the coil skeleton, and the upper iron core disk and the lower iron core disk together form a transformer iron core; an upper coil winding ring groove and a lower coil winding ring groove are respectively arranged on the outer periphery of the coil skeleton, and an a coil and a b coil are respectively wound in the upper coil winding ring groove and the lower coil winding ring groove; a horizontal current transformer support is fixed on one side of the lower end of the coil skeleton, a current transformer is installed on the current transformer support, and the wire electrically connected to any end of the a coil passes through the current transformer.
[0006] Furthermore, a wire threading seat is fixed on the side of the lower end of the coil skeleton away from the current transformer support.
[0007] Furthermore, the upper iron core disk includes an upper disk, an upper iron core column is integrally arranged in the center of the lower side of the upper disk, an upper iron core ring wall is integrally arranged on the edge of the lower side contour of the upper disk, the upper iron core ring wall surrounds the outer periphery of the upper coil winding ring groove, and a left upper notch and a right upper notch are respectively arranged on the left and right sides of the integrated structure formed by the upper disk and the upper iron core ring wall;
[0008] The lower iron core disk includes a lower disk, a lower iron core column is integrally arranged in the center of the upper side of the lower disk, a lower iron core ring wall is integrally arranged on the edge of the upper side contour of the lower disk, the lower iron core ring wall surrounds the outer periphery of the lower coil winding ring groove, and a left lower notch and a right lower notch are respectively arranged on the left and right sides of the integrated structure formed by the lower disk and the lower iron core ring wall.
[0009] Further, when the upper iron core disc and the lower iron core disc are combined to form a transformer iron core, the upper left notch and the lower left notch are aligned vertically and form a heat dissipation port on the left side of the iron core, and the upper right notch and the lower right notch are aligned vertically and form a heat dissipation port on the right side of the iron core.
[0010] Further, the mutual inductor support and the wire threading base are respectively clamped in the lower right notch and the lower left notch.
[0011] Further, the lower end surfaces of the upper iron core column and the upper iron core ring wall are adhesively bonded to the upper end surfaces of the lower iron core column and the lower iron core ring wall.
[0012] Beneficial effects: The current change of the current transformer of the present utility model provides a voltage signal for the feedback circuit, so as to realize real-time monitoring of the current change of the a coil, and further is more beneficial to the stability of the balance system and the early warning of abnormal conditions; at the same time, this integrated structure also reduces the PCB plug-in process and reduces the plug-in labor cost of the external current transformer; the external air flow can blow into the air guide gap from the heat dissipation port on the right side of the iron core, so as to blow out the hot air in the air guide gap from the heat dissipation port on the left side of the iron core, so as to achieve the effect of internal cooling air circulation of the transformer. Description of the Drawings
[0013] Figure 1 It is a schematic diagram of the whole transformer, and the coil is hidden in this figure;
[0014] Figure 2 It is an exploded schematic diagram of the transformer from the first perspective, and the coil is hidden in this figure;
[0015] Figure 3 It is an exploded schematic diagram of the transformer from the second perspective, and the coil is hidden in this figure;
[0016] Figure 4 It is a schematic diagram of the cooperation between the coil and the current transformer. Detailed Embodiments
[0017] The following further describes the present utility model with reference to the drawings.
[0018] As shown in the attached Figures 1 to 4A transformer integrated with a current transformer, as shown, includes an upper iron core disk 1, a lower iron core disk 3, and a coil skeleton 2. The upper iron core disk 1 and the lower iron core disk 3 are respectively buckled on the upper and lower sides of the coil skeleton 2, and the upper iron core disk 1 and the lower iron core disk 3 together form a transformer iron core 30. On the outer periphery of the coil skeleton 2, an upper coil winding ring groove 22 and a lower coil winding ring groove 23 are respectively provided. An a coil 21 and a b coil 20 are respectively wound in the upper coil winding ring groove 22 and the lower coil winding ring groove 23. On one side of the lower end of the coil skeleton 2, a transverse current transformer support 8 is fixed. A current transformer 7 is installed on the current transformer support 8. A wire electrically connected to any end of the a coil 21 passes through the current transformer 7. The current change of the current transformer 7 provides a voltage signal for the feedback circuit, so as to realize the real-time monitoring of the current change of the a coil 21, and further is more beneficial to the balance of the system stability and the early warning of abnormal situations. In this solution, the transformer and the current transformer are integrated together at the time of factory shipment. At the same time, this integrated structure also reduces the PCB plug-in process during assembly, and reduces the labor cost of plugging in the external current transformer. At the same time, the highly integrated structure also reduces the volume and the material used for the PCB.
[0019] As Figure 2 and 3 , on the side of the lower end of the coil skeleton 2 far from the current transformer support 8, a wire passing seat 9 is fixed. There is a wire passing hole on the wire passing seat 9 for passing through the wire. A core hole 13 runs through the coil skeleton 2 coaxially from top to bottom. On the outer periphery of the coil skeleton 2, an a ring wall 24, a b ring wall 25, and a c ring wall 26 are integrally provided from top to bottom. The upper coil winding ring groove 22 is between the a ring wall 24 and the b ring wall 25, and the lower coil winding ring groove 23 is between the b ring wall 25 and the c ring wall 26. The current transformer support 8 and the wire passing seat 9 are both integrally fixed on the lower side of the c ring wall 26. The upper iron core disk 1 includes an upper disk 10a. At the center of the lower side of the upper disk 10a, an upper iron core column 12a is integrally provided. At the edge of the lower side contour of the upper disk 10a, an upper iron core ring wall 11a is integrally provided. The upper iron core ring wall 11a surrounds the outer periphery of the upper coil winding ring groove 22. On the left and right sides of the integrated structure formed by the upper disk 10a and the upper iron core ring wall 11a, a left upper notch 5a and a right upper notch 6a are respectively provided. The upper iron core column 12a is inserted downward into the upper end of the core hole 13.
[0020] The lower iron core disc 3 includes a lower disc 10b. A lower iron core column 12b is integrally provided at the center on the upper side of the lower disc 10b. A lower iron core ring wall 11b is integrally provided at the contour edge on the upper side of the lower disc 10b. The lower iron core ring wall 11b surrounds the outer periphery of the lower coil winding ring groove 23. The left and right sides of the integral structure formed by the lower disc 10b and the lower iron core ring wall 11b are respectively provided with a lower left notch 5b and a lower right notch 6b. When the upper iron core disc 1 and the lower iron core disc 3 are jointly combined into a transformer iron core 30, the upper left notch 5a and the lower left notch 5b are vertically aligned and form a left-side heat dissipation port 5 of the iron core. The upper right notch 6a and the lower right notch 6b are vertically aligned and form a right-side heat dissipation port 6 of the iron core. The lower iron core column 12b passes upward through the lower end of the iron core hole 13.
[0021] The mutual inductor support 8 and the wire threading seat 9 are respectively clamped in the lower right notch 6b and the lower left notch 5b. Their clamping structure not only improves the structural stability and anti-bending of the mutual inductor support 8 and the wire threading seat 9, but also plays a role in restricting the relative rotation of the coil bobbin 2.
[0022] The lower end surfaces of the upper iron core column 12a and the upper iron core ring wall 11a are adhesively bonded to the upper end surfaces of the lower iron core column 12b and the lower iron core ring wall 11b, specifically using a modified epoxy resin adhesive.
[0023] After an a coil 21 and a b coil 20 are respectively wound in the upper coil winding ring groove 22 and the lower coil winding ring groove 23, there are air guiding gaps between the a coil 21 and the upper iron core ring wall 11a, and between the b coil 20 and the lower iron core ring wall 11b. In practice, a small cooling fan is provided outside the right-side heat dissipation port 6 of the iron core. Under the action of the fan, the external air flow can be blown into the air guiding gaps from the right-side heat dissipation port 6 of the iron core, so as to blow the hot air in the air guiding gaps out from the left-side heat dissipation port 5 of the iron core, thereby achieving the effect of internal cooling air circulation of the transformer and improving the heat dissipation performance.
[0024] The above is only the preferred implementation manner of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.
Claims
1. A transformer integrated with a current transformer, characterized in that: It includes an upper iron core disk (1), a lower iron core disk (3) and a coil skeleton (2). The upper iron core disk (1) and the lower iron core disk (3) are respectively buckled on the upper and lower sides of the coil skeleton (2), and the upper iron core disk (1) and the lower iron core disk (3) jointly form a transformer iron core (30). On the outer periphery of the coil skeleton (2), an upper coil winding ring groove (22) and a lower coil winding ring groove (23) are respectively arranged. An a coil (21) and a b coil (20) are respectively wound in the upper coil winding ring groove (22) and the lower coil winding ring groove (23). On one side of the lower end of the coil skeleton (2), a transverse mutual inductor support (8) is fixed. A current mutual inductor (7) is installed on the mutual inductor support (8). A wire electrically connected to any end of the a coil (21) passes through the current mutual inductor (7).
2. The transformer integrated with a current transformer according to claim 1, characterized in that: On one side of the lower end of the coil skeleton (2) far from the mutual inductor support (8), a wire passing seat (9) is fixed.
3. The transformer integrated with a current transformer according to claim 2, characterized in that: The upper iron core disk (1) includes an upper disk (10a). A central upper iron core column (12a) is integrally arranged on the lower side of the upper disk (10a). An upper iron core ring wall (11a) is integrally arranged on the contour edge of the lower side of the upper disk (10a). The upper iron core ring wall (11a) surrounds the outer periphery of the upper coil winding ring groove (22). On the left and right sides of the integral structure formed by the upper disk (10a) and the upper iron core ring wall (11a), a left upper notch (5a) and a right upper notch (6a) are respectively arranged. The lower iron core disk (3) includes a lower disk (10b). A central lower iron core column (12b) is integrally arranged on the upper side of the lower disk (10b). A lower iron core ring wall (11b) is integrally arranged on the contour edge of the upper side of the lower disk (10b). The lower iron core ring wall (11b) surrounds the outer periphery of the lower coil winding ring groove (23). On the left and right sides of the integral structure formed by the lower disk (10b) and the lower iron core ring wall (11b), a left lower notch (5b) and a right lower notch (6b) are respectively arranged.
4. A transformer integrated with a current transformer according to claim 3, characterized in that: When the upper iron core disk (1) and the lower iron core disk (3) jointly form the transformer iron core (30), the left upper notch (5a) and the left lower notch (5b) are vertically aligned to form a left-side heat dissipation port (5) of the iron core, and the right upper notch (6a) and the right lower notch (6b) are vertically aligned to form a right-side heat dissipation port (6) of the iron core.
5. The transformer integrated with a current transformer according to claim 4, characterized in that: The mutual inductor support (8) and the wire passing seat (9) are respectively embedded in the right lower notch (6b) and the left lower notch (5b).
6. The transformer integrated with a current transformer according to claim 5, characterized in that: The lower end surfaces of the upper iron core column (12a) and the upper iron core ring wall (11a) are adhesively bonded to the upper end surfaces of the lower iron core column (12b) and the lower iron core ring wall (11b).