A large current horizontal current transformer with temperature detection

Abstract

The present invention relates to a large current horizontal current transformer with temperature detection, comprising an upper cover and a shell, the shell consisting of a shell groove and a protrusion, a toroidal magnetic core provided in the shell, a wire package provided on the toroidal magnetic core, a bottom beam shielding groove provided in the protrusion, a temperature sensor and a current carrier provided in the bottom beam shielding groove, the current carrier passing through the toroidal magnetic core and connected to an external current terminal; a module circuit board provided in the upper cover, a needle holder provided in the shell groove, a pin provided in the needle holder, one end of the pin connected to the module circuit board, and the other end connected to an external device interface. The present invention is provided with a thermistor, and when the temperature is abnormal, the control mechanism of the module circuit board will take action to ensure the safe operation of the current transformer; the error compensation circuit avoids the occurrence of inaccurate measurement due to current disturbances, thereby improving the measurement accuracy of the current transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of current transformers, and in particular to a large-current horizontal current transformer with temperature detection function. Background Art

[0002] Current transformers, used for AC metering and detection, are a crucial component of current metering equipment. Typical current transformers only have analog output capabilities and do not monitor the temperature of the current-carrying plate, posing a safety hazard to computing equipment. Traditional current transformers have outdated structures and fail to consider the safety risks posed by electromagnetic interference during mechanical design. This can lead to inaccurate measurement of external current in environments with interference. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, a large current horizontal current transformer with temperature detection is proposed. The current transformer has a novel structure, and the electromagnetic shielding effect is greatly improved by the shell groove and protruding mouth structure, so that the external current loop can achieve accurate measurement in a shielded environment; information is exchanged with external devices through the pin (5), which greatly improves the data transmission efficiency; the present invention is provided with a thermistor in the bottom beam shielding groove, and the thermistor is connected to the module circuit board. At the same time, the thermistor is tightly fitted with the current carrier. When the temperature is abnormal, the control mechanism of the module circuit board will take action to ensure the safe operation of the current transformer.

[0004] The technical solution of the present invention is: a large-current horizontal current transformer with temperature detection, comprising an upper cover and a shell, the shell consisting of a shell groove and a protrusion, an annular magnetic core is provided in the shell, a wire package is provided on the annular magnetic core, a bottom beam shielding groove is provided in the protrusion, a temperature sensor and a current-carrying sheet are provided in the bottom beam shielding groove, the current-carrying sheet passes through the annular magnetic core and is connected to the external current end; a module circuit board is provided in the upper cover, a needle seat is provided in the shell groove, a pin is provided in the needle seat, one end of the pin is connected to the module circuit board, and the other end thereof is connected to the external device interface.

[0005] Preferably, the shell groove is an integrated structure consisting of an arc groove and an open rectangular groove, the two sides of the opening of the rectangular groove are respectively connected to one side of the two arc structures, and the other side of the two arc structures are respectively injection molded with the two vertical ribs of the protruding mouth.

[0006] Preferably, a hollow groove is provided at the bottom of the housing groove, and the needle seat is arranged in the rectangular groove.

[0007] Preferably, the carrier sheet is a twisted integral structure, the bottom of which is the carrier sheet bottom beam, and on both sides of the carrier sheet bottom beam are short terminal arms and long terminal arms respectively, and at the ends of the short terminal arms and long terminal arms are short terminals and long terminals respectively; the angles between the short terminals and long terminals of the carrier sheet and the short terminal arms and the long terminal arms respectively are 90 degrees; the angles between the short terminal arms and long terminal arms and the carrier sheet bottom beam respectively are 90 degrees, and the short terminals and long terminals of the carrier sheet are on the same plane.

[0008] Preferably, the bottom beam of the current carrier sheet is in the shape of an elongated strip, and is a closed bottom beam figure composed of two parallel lines and two arcs.

[0009] Preferably, the bottom beam shielding groove is in the shape of a groove, the bottom surface of which is consistent with the shape and size of the closed figure of the bottom beam, and the groove wall is composed of a protruding upper groove and a protruding lower groove. The groove wall of the protruding upper groove constitutes the groove edge of the bottom hollow groove of the shell groove, the inner arm height of the protruding upper groove is equal to the thickness of the bottom beam of the current carrier, and the inner arm height of the protruding lower groove is equal to the sum of the thickness of the bottom beam of the current carrier and the inner wall height of the arc groove.

[0010] Preferably, the carrier bottom beam of the carrier sheet is arranged in a bottom beam shielding groove, and the temperature sensor is arranged at one end or both ends of the groove bottom of the bottom beam shielding groove, and fits tightly with the carrier bottom beam.

[0011] Preferably, the temperature sensor is connected to the module circuit board via a signal line. A probe circuit is provided in the module circuit board. The probe circuit is arranged in the gap of the annular magnetic core and is non-contact with the gap.

[0012] Beneficial effects of the present invention:

[0013] 1) The present invention has a novel structure, and the electromagnetic shielding effect is greatly improved through the shell groove and protruding mouth structure, so that the external current loop can be accurately measured in a shielded environment.

[0014] 2) The present invention exchanges information with external devices through pins, greatly improving data transmission efficiency;

[0015] 3) The present invention provides a thermistor in the bottom beam shielding groove, which is connected to the module circuit board. At the same time, the thermistor is tightly fitted to the current carrier. When the temperature is abnormal, the control mechanism of the module circuit board will take action to ensure the safe operation of the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the right side;

[0018] Figure 3 This is a schematic diagram of the conductive terminal structure of the present invention;

[0019] Figure 4 for Figure 3 Side view of;

[0020] Figure 5 for Figure 3 A top view of

[0021] Figure 6 for Figure 3 Schematic diagram of the right side;

[0022] Figure 7 This is a schematic diagram of the positional relationship between the pin (5) and the conductive terminal of the present invention;

[0023] Figure 8 This is a schematic diagram of the upper cover structure of the present invention;

[0024] Figure 9 This is a schematic diagram of the shell structure of the present invention;

[0025] Figure 10 This is a schematic diagram of the position of the bottom beam shielding slot of the present invention;

[0026] Figure 11 for Figure 10 Schematic side view of .

[0027] In the figure, 1. long terminal of the current-carrying piece; 2. short terminal of the current-carrying piece; 3. protruding nozzle; 4. shell; 5. pin; 6. wave card seat; 7. short terminal arm; 8. bottom beam of the current-carrying piece; 9. long terminal arm; 10. upper cover; 11. current-carrying piece; 12. U-shaped plate; 12-1. U-shaped groove; 13. arc-shaped cover; 13-1. arc-shaped groove; 14. square mouth; 15. protruding nozzle upper cover; 15-1. protruding nozzle lower groove, 15-2. protruding nozzle lower groove; 16. needle seat; 17. bottom beam shielding groove; 18. vertical rib. DETAILED DESCRIPTION

[0028] See also Figures 1 to 11 As shown, the present invention comprises an upper cover (10) and a shell (4), wherein the shell (4) is an integrated injection-molded structure consisting of a shell groove and a protruding nozzle (3), an annular magnetic core is provided in the shell (4), a wire package is provided on the annular magnetic core, a bottom beam shielding groove (17) is provided in the protruding nozzle (3), and a temperature sensor and a current carrier (11) are provided in the bottom beam shielding groove (17), as shown in FIG. Figure 11As shown, the current carrier (11) passes through the annular magnetic core and is connected to the external current terminal; a module circuit board is provided in the upper cover (10), a needle seat (16) is provided in the housing groove, and the needle seat (16) is provided in the rectangular groove. A pin (5) is provided in the needle seat (16), Figure 7 When the upper cover (10) and the shell (4) are buckled together, one end of the pin (5) is connected to the module circuit board, and the other end is connected to the external device interface. The shell groove is an integrated structure consisting of an arc groove and an open rectangular groove. The two sides of the opening of the rectangular groove are respectively connected to one side of the two arc structures, and the other sides of the two arc structures are respectively injection-molded with the two vertical ribs (18) of the protruding nozzle (3). Figure 2 .

[0029] The bottom of the housing groove is provided with a hollow groove, and the current carrier (11) is a twisted integral structure, the bottom of which is the current carrier bottom beam (8), see Figure 4 、 5 As shown in FIG6 , on both sides of the carrier chip bottom beam (8) are short terminal arms (7) and long terminal arms (9), and at the ends of the short terminal arms (7) and long terminal arms (9) are short carrier chips terminals (2) and long carrier chips terminals (1); the angles between the short carrier chips terminals (2) and long carrier chips terminals (1) and the short terminal arms (7) and long terminal arms (9) are 90 degrees respectively; the angles between the short terminal arms (7) and long terminal arms (9) and the carrier chip bottom beam (8) are 90 degrees respectively, and the short carrier chips terminals (2) and long carrier chips terminals (1) are on the same plane. The carrier chip bottom beam (8) is in the shape of a long strip and is a bottom beam closed figure composed of two parallel lines and two arcs. The bottom beam shielding groove (17) is in the shape of a groove, the bottom surface of which is consistent with the shape and size of the bottom beam closed figure, and the groove wall is composed of a protruding mouth upper groove (15-2) and a protruding mouth lower groove (15-1).

[0030] The upper cover (10) is an integrated cover composed of a U-shaped plate (12), an arc-shaped cover (13), and a protruding mouth upper cover (15). The U-shaped plate (12) corresponds to the U-shaped groove (12-1) of the housing groove. Figure 8 、 Figure 9 The rear part of the U-shaped groove (12-1) is provided with a wave card seat (6), the arc cover (13) corresponds to the arc groove (13-1) of the housing groove, the convex nozzle upper cover (15) is buckled with the convex nozzle lower groove (15-1), and a square opening (14) is provided on the upper cover (10), which is the outlet of the current-carrying chip long terminal (1), see Figure 1The groove wall of the upper groove of the protruding nozzle (15-2) constitutes the groove edge of the bottom hollow groove of the housing groove, the inner arm height of the upper groove of the protruding nozzle (15-2) is equal to the thickness of the carrier sheet bottom beam (8), and the inner arm height of the lower groove of the protruding nozzle (15-1) is equal to the sum of the thickness of the carrier sheet bottom beam (8) and the inner wall height of the arc groove (13-1). Figure 11 The carrier sheet bottom beam (8) of the carrier sheet (11) is arranged in a bottom beam shielding groove (17), and the temperature sensor is arranged at one end of the groove bottom of the bottom beam shielding groove (17). The temperature sensor can be provided in plurality, and in this case, the temperature sensor is provided at both ends of the groove bottom of the bottom beam shielding groove (17), and is closely fitted with the carrier sheet bottom beam (8) to form a temperature sensing source. The temperature sensor is connected to the module circuit board through a signal line, and a probe circuit is provided in the module circuit board, and the probe circuit is provided in the notch of the annular magnetic core and is non-contact with the notch.

[0031] The present invention has the following characteristics:

[0032] 1) The present invention has a novel structure, and the electromagnetic shielding effect is greatly improved through the shell groove and protruding mouth structure, so that the external current loop can be accurately measured in a shielded environment.

[0033] 2) The present invention exchanges information with external devices through pins, greatly improving data transmission efficiency;

[0034] 3) The present invention provides a thermistor in the bottom beam shielding groove, which is connected to the module circuit board. At the same time, the thermistor is tightly fitted to the current carrier. When the temperature is abnormal, the control mechanism of the module circuit board will take action to ensure the safe operation of the current transformer.

Claims

1. A high-current horizontal current transformer with temperature detection, comprising an upper cover (10) and a housing (4), characterized in that: The shell (4) is composed of a shell groove and a protrusion (3); an annular magnetic core is provided in the shell (4); a wire package is provided on the annular magnetic core; a bottom beam shielding groove (17) is provided in the protrusion (3); a temperature sensor and a current carrier (11) are provided in the bottom beam shielding groove (17); the current carrier (11) passes through the annular magnetic core and is connected to the external current end; a module circuit board is provided in the upper cover (10); a needle seat (16) is provided in the shell groove; a pin (5) is provided in the pin seat (16); one end of the pin (5) is connected to the module circuit board, and the other end thereof is connected to the external device interface; The housing groove is an integrated structure consisting of an arc-shaped groove and an open rectangular groove; The current carrier (11) is a twisted integral structure, the bottom of which is a current carrier bottom beam (8), and the current carrier bottom beam (8) is a long strip, and is a bottom beam closed figure composed of two parallel lines and two arcs; The bottom beam shielding groove (17) is in the shape of a groove, and its bottom surface is consistent with the shape and size of the bottom beam closed figure. Its groove wall is composed of a protruding upper groove (15-2) and a protruding lower groove (15-1). The groove wall of the protruding upper groove (15-2) constitutes the groove edge of the bottom hollow groove of the shell groove. The inner arm height of the protruding upper groove (15-2) is equal to the thickness of the carrier sheet bottom beam (8), and the inner arm height of the protruding lower groove (15-1) is equal to the sum of the thickness of the carrier sheet bottom beam (8) and the inner wall height of the arc groove (13-1).

2. The high-current horizontal current transformer with temperature detection according to claim 1 is characterized in that: The two sides of the opening of the rectangular groove are respectively connected to one side of the two arc-shaped structures, and the other sides of the two arc-shaped structures are respectively injection-molded together with the two vertical ribs (18) of the protruding mouth (3).

3. The high-current horizontal current transformer with temperature detection according to claim 2 is characterized in that: A hollow groove is provided at the bottom of the housing groove, and the needle seat (16) is arranged in the rectangular groove.

4. The high-current horizontal current transformer with temperature detection according to claim 3 is characterized by: exist The two sides of the carrier chip bottom beam (8) are respectively short terminal arms (7) and long terminal arms (9), and the ends of the short terminal arms (7) and the long terminal arms (9) are respectively short terminals (2) and long terminals (1) of the carrier chip; the angles between the short terminals (2) and the long terminals (1) and the short terminal arms (7) and the long terminal arms (9) are 90 degrees; the angles between the short terminal arms (7) and the long terminal arms (9) and the carrier chip bottom beam (8) are respectively 90 degrees, and the short terminals (2) and the long terminals (1) are on the same plane.

5. The high-current horizontal current transformer with temperature detection according to claim 4 is characterized in that: The carrier sheet bottom beam (8) of the carrier sheet (11) is arranged in a bottom beam shielding groove (17), and the temperature sensor is arranged at one end or both ends of the groove bottom of the bottom beam shielding groove (17), and is tightly fitted with the carrier sheet bottom beam (8).

6. The high-current horizontal current transformer with temperature detection according to claim 4 is characterized in that: The temperature sensor is connected to the module circuit board through a signal line. A probe circuit is provided in the module circuit board. The probe circuit is arranged in the gap of the annular magnetic core and is non-contact with the gap.

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