CN219124092U - Current transformer - Google Patents

Abstract

The utility model discloses a converter, comprising: the box body is provided with a heat dissipation runner; the control assembly is arranged in the box body and is opposite to the heat dissipation flow channel; the water pipe connector is arranged on one side of the box body in the length direction and is communicated with the heat dissipation flow channel; the terminals are arranged on at least one side of the box body in the length direction and/or the width direction and are electrically connected with the control assembly. The water pipe connector and the terminals are arranged on the side face of the box body, so that the water pipe connector and the terminals do not occupy the upper surface and the lower surface of the box body, the structure of the converter is compact, and the converter does not occupy extra space during installation.

Description

Current transformer

Technical Field

The utility model relates to the technical field of current transformation equipment, in particular to a current transformer.

Background

In the related art, for the power density of the power module, a module provider starts to package the power module and the heat sink, and seals the power module and the heat sink by welding or sealing and pressing, so as to form a whole. The power module and the radiator have complex structures and large occupied space during assembly. Therefore, when the power module and the radiator are assembled, how to improve the space utilization rate and the effect of facilitating the whole vehicle arrangement becomes a problem to be solved.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the current transformer, the water pipe connector and the terminal are arranged on the side face of the box body, the structure of the current transformer is compact, and no extra space is occupied during installation.

According to an embodiment of the present utility model, a current transformer includes: the box body is provided with a heat dissipation runner; the control assembly is arranged in the box body and is opposite to the heat dissipation flow channel; the water pipe connector is arranged on one side of the box body in the length direction and is communicated with the heat dissipation flow channel; the terminals are arranged on at least one side of the box body in the length direction and/or the width direction and are electrically connected with the control assembly.

According to the converter provided by the embodiment of the utility model, the water pipe connector and the terminals are arranged on the side surface of the box body, so that the water pipe connector and the terminals do not occupy the upper surface and the lower surface of the box body, the structure of the converter is compact, and the converter does not occupy extra space during installation.

According to some embodiments of the utility model, the water connection comprises: the heat dissipation device comprises a connecting plate, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are fixed on the connecting plate, the water inlet pipe and the water outlet pipe are communicated with the heat dissipation flow channel, and the connecting plate is fixedly connected with the side face of the box body.

According to some embodiments of the utility model, an avoidance groove is formed in one side of the box body in the length direction, a first connecting hole is formed in the bottom of the avoidance groove, a second connecting hole is formed in the connecting plate and is arranged in the avoidance groove, and a fastener penetrates through the second connecting hole and then is connected with the first connecting hole.

According to some embodiments of the utility model, the current transformer further comprises: the sealing element is arranged at the bottom of the avoidance groove, and is accommodated in the accommodation groove and clamped between the connecting plate and the accommodation groove.

According to some embodiments of the utility model, the control assembly comprises: the power device comprises a power device and a cover plate, wherein the cover plate is arranged on the box body and forms the heat dissipation flow channel with the box body, a perforation is formed in the cover plate, the power device is fixed on one side, deviating from the box body, of the cover plate, a plurality of heat dissipation teeth arranged at intervals are arranged on the power device, and the heat dissipation teeth penetrate through the perforation.

According to some embodiments of the utility model, the control assembly further comprises: the capacitor is fixed on one side of the cover plate, which is away from the box body, is arranged at intervals with the power device and is electrically connected with the power device.

According to some embodiments of the utility model, the terminal comprises: the direct current connecting terminal and the alternating current connecting terminal are arranged on one side of the box body in the width direction, the direct current connecting terminal is electrically connected with the capacitor, and the alternating current connecting terminal is electrically connected with the power device.

According to some embodiments of the utility model, the control assembly further comprises: the insulation positioning block is arranged on one side of the cover plate and fixedly connected with the box body, the current sensor is arranged on the insulation positioning block, and the current sensor is arranged between the alternating current connecting terminal and the power device.

According to some embodiments of the utility model, the control assembly further comprises: the first electric connecting piece is arranged on the insulating positioning block and penetrates through the current sensor, and the first electric connecting piece is electrically connected between the power device and the alternating current connecting terminal.

According to some embodiments of the utility model, the control assembly further comprises: and the second electric connector is electrically connected between the direct current connection terminal and the capacitor.

According to some embodiments of the utility model, the control assembly further comprises: the power device comprises a fixing piece, wherein one end of the fixing piece is fixedly connected with the cover plate, the other end of the fixing piece is in butt joint with the edge of the power device, a groove is formed in the box body, and the groove corresponds to the fixing piece so as to avoid the fixing piece.

According to some embodiments of the utility model, the control assembly further comprises: the circuit board, the electric capacity with power device all with the circuit board electricity is connected, the mounting deviates from one side of apron is provided with the erection column, the circuit board with erection column fixed connection.

According to some embodiments of the utility model, the terminal comprises: the control terminal is electrically connected with the control assembly, the control terminal is arranged on one side of the box body in the length direction and is arranged at intervals with the water pipe joint, and the control terminal is fixed on the side wall of the box body.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a current transformer according to an embodiment of the present utility model;

fig. 2 is an exploded view of a current transformer according to an embodiment of the present utility model;

FIG. 3 is a partial schematic view A of FIG. 2;

FIG. 4 is a schematic view of a portion of a control assembly according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a power device and a fixture according to an embodiment of the present utility model.

Reference numerals:

100. a current transformer;

10. a case; 11. an avoidance groove; 12. a receiving groove;

20. a control assembly; 21. a power device; 22. a cover plate; 23. a capacitor; 24. an insulating positioning block; 25. a current sensor; 26. a first electrical connection; 27. a second electrical connection; 28. a fixing member; 29. a circuit board;

30. a water pipe joint; 31. a connecting plate; 32. a water inlet pipe; 33. a water outlet pipe; 34. a seal;

41. a DC connection terminal; 42. an ac connection terminal; 43. and a control terminal.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

A current transformer 100 according to an embodiment of the present utility model is described below with reference to fig. 1-5.

Referring to fig. 1 to 5, a current transformer 100 according to an embodiment of the present utility model includes: the box body 10 and the control assembly 20, be provided with the heat dissipation runner on the box body 10, the control assembly 20 sets up in the box body 10 to control assembly 20 and heat dissipation runner are relative to be set up. The current transformer 100 is an electrical device that changes the voltage, frequency, phase number, and other electric quantity or characteristics of a power supply system. And, the power battery of the new energy automobile is direct current, and the motor is generally a permanent magnet synchronous alternating current motor, that is, the direct current of the power battery needs to be converted into alternating current used by the motor through the converter 100. The control assembly 20 may be integrated with a main circuit (respectively, a rectifying circuit, an inverter circuit, an ac conversion circuit and a dc conversion circuit), and further needs a trigger circuit (or driving circuit) for controlling the on-off of the power switch element and a control circuit for realizing the adjustment and control of the electric energy.

The case 10 is provided with a heat dissipation flow channel, that is, the heat dissipation flow channel can dissipate heat to the control assembly 20, so that the current transformer 100 is prevented from overheating.

And, the current transformer 100 further includes: the water pipe joint 30, the water pipe joint 30 is provided at one side of the case 10 in the length direction, and the water pipe joint 30 communicates with the heat dissipation flow path. In this way, the water pipe connector 30 is arranged on the side surface of the box body 10, so that the water pipe connector 30 does not occupy the upper surface and the lower surface of the box body 10, and the converter 100 is compact in structure and does not occupy extra space during installation.

Further, the current transformer 100 further includes: a plurality of terminals are provided on at least one side of the case 10 in the length direction and/or the width direction and electrically connected to the control assembly 20. In the same way, the plurality of terminals are arranged on the side surface of the box body 10, so that the plurality of terminals do not occupy the upper surface and the lower surface of the box body 10, and the converter 100 is compact in structure and does not occupy extra space during installation.

Therefore, the water pipe connector 30 and the plurality of terminals are arranged on the side surface of the box body 10, so that the water pipe connector 30 and the plurality of terminals do not occupy the upper surface and the lower surface of the box body 10, the structure of the current transformer 100 is compact, and no extra space is occupied during installation.

As shown with reference to fig. 3, the water pipe joint 30 includes: the heat dissipation device comprises a connecting plate 31, a water inlet pipe 32 and a water outlet pipe 33, wherein the water inlet pipe 32 and the water outlet pipe 33 are fixed on the connecting plate 31, the water inlet pipe 32 and the water outlet pipe 33 are communicated with a heat dissipation flow channel, and the connecting plate 31 is fixedly connected with the side face of the box body 10. The water pipe connector 30 is provided with the water inlet pipe 32 and the water outlet pipe 33, that is, the water pipe connector 30 is integrated with the water inlet pipe 32 and the water outlet pipe 33, so that the structure of the converter 100 is simpler. And, the water pipe joint 30 and the case 10 may be integrally formed.

The box 10 is provided with dodges the groove 11 in one side of length direction, dodges the tank bottom in groove 11 and is provided with first connecting hole, is provided with the second connecting hole on the connecting plate 31 and sets up in dodging the groove 11, and the fastener passes the second connecting hole and is connected with first connecting hole.

Referring to fig. 2 and 3, the current transformer 100 further includes: the seal 34 is arranged at the bottom of the avoidance groove 11, the accommodation groove 12 is arranged at the bottom of the avoidance groove 11, and the seal 34 is accommodated in the accommodation groove 12 and is clamped between the connecting plate 31 and the accommodation groove 12. That is, the seal 34 is interposed between the tank 10 and the water pipe joint 30. In this way, the seal 34 is provided between the tank 10 and the water pipe joint 30, so that the tank 10 and the water pipe joint 30 can be sealed by the seal 34, thereby avoiding leakage of the cooling liquid from between the tank 10 and the water pipe joint 30. Wherein the seal 34 may be a rubber seal ring.

And, set up the holding tank 12 at the tank bottom avoiding the groove 11, namely set up the seal 34 in the holding tank 12, can play the location to the seal 34 in this way, thus avoid the seal 34 to scurry the position and cause the poor leakproofness between water pipe joint 30 and the box 10.

As shown in fig. 2, the control assembly 20 includes: the power device 21 and the apron 22, apron 22 lid are established on box 10 to constitute the heat dissipation runner with box 10, be provided with the perforation on the apron 22, power device 21 is fixed in the apron 22 one side that deviates from box 10, is provided with the heat dissipation tooth that a plurality of intervals set up on the power device 21, and the perforation is worn to establish to the heat dissipation tooth. That is, a heat dissipation flow passage is provided on the case 10, and a through hole communicating with the heat dissipation flow passage is provided on the case 10, so that heat dissipation teeth can be inserted into the heat dissipation flow passage through the through hole, thereby achieving heat dissipation of the power device 21.

And, the case 10 and the cover 22 may be separately manufactured, and then the cover 22 is fixed to the case 10 by a structure such as a bolt or a screw. Of course, the case 10 and the cover 22 may be integrally formed, which may facilitate the production and assembly of the current transformer 100.

And, referring to fig. 2 and 3, the control assembly 20 further includes: and a capacitor 23, wherein the capacitor 23 is fixed on one side of the cover plate 22 away from the box body 10, the capacitor 23 and the power device 21 are arranged at intervals, and the capacitor 23 is electrically connected with the power device 21. The output end of the capacitor 23 can output filtering, so that higher harmonic waves flow through, damage to a power grid or electric equipment is prevented, and the quality of output electric energy is improved. And, the input of electric capacity 23 can absorb energy storage system's voltage fluctuation, and the output filters because the curve that inverts out alternating current is not smooth is that the broken line can smooth after through electric capacity 23 filters.

As shown with reference to fig. 1 and 2, the terminal includes: the dc connection terminal 41 and the ac connection terminal 42 are provided on one side of the case 10 in the width direction, the dc connection terminal 41 and the capacitor 23 are electrically connected, and the ac connection terminal 42 and the power device 21 are electrically connected. The power battery of the new energy automobile is direct current, and the motor is generally a permanent magnet synchronous alternating current motor, that is, the direct current of the power battery needs to be converted into alternating current used by the motor through the converter 100. In this way, the dc connection terminal 41 may be used as an input terminal of the current transformer 100, and the ac connection section may be used as an output terminal of the current transformer 100, so that the dc may be changed into the ac. And, the dc connection terminal 41 and the ac connection terminal 42 are provided at one side of the case 10 in the width direction, so that the structure of the current transformer 100 is simpler, i.e., the structure of the current transformer 100 is compact, and no additional space is occupied when mounting.

As shown in connection with fig. 2-4, the control assembly 20 further includes: the insulation locating block 24 and the current sensor 25, the insulation locating block 24 is arranged on one side of the cover plate 22 and fixedly connected with the box body 10, the current sensor 25 is arranged on the insulation locating block 24, and the current sensor 25 is arranged between the direct current connecting terminal 41 and the power device 21. The current sensor 25 can automatically detect and display current, and has an automatic protection function and a higher intelligent control when dangerous situations such as overcurrent and overvoltage occur. In this way, the current sensor 25 may be arranged between the power device 21 and the ac connection terminal 42, so that the output current of the current transformer 100 may be monitored, and thus a corresponding adjustment may be made according to the output value of the current sensor 25.

And, the current sensor 25 is disposed on the insulating positioning block 24, so that the current sensor 25 and the power device 21 can be separated by the insulating positioning block 24, and interference between the current sensor 25 and the power device 21 is avoided.

Referring to fig. 4, the control assembly 20 further includes: the first electric connector 26, the first electric connector 26 is disposed on the insulating positioning block 24, and the first electric connector 26 is threaded through the current sensor 25, and the first electric connector 26 is electrically connected between the power device 21 and the ac connection terminal 42. As such, the first electrical connectors 26 are provided on the insulating positioning block 24, that is, the power device 21 and the ac connection terminals 42 can be electrically connected together by the first electrical connectors 26, specifically, the first electrical connectors 26 are three. In addition, the first electrical connector 26 is arranged on the insulation positioning block 24, so that insulation can be achieved through the insulation positioning block 24, interference between the first electrical connector 26 and the power device 21 is avoided, and conduction between the first electrical connector 26 and the box 10 is avoided.

Further, the first electrical connector 26 is provided with a current sensor 25, i.e. by monitoring the current flowing through the first electrical connector 26, the current monitoring of the output terminal of the current transformer 100 can be achieved.

Referring to fig. 4, the control assembly 20 further includes: the second electrical connector 27, the second electrical connector 27 is electrically connected between the dc connection terminal 41 and the capacitor 23. That is, the capacitor 23 and the dc connection terminal 41 are connected by the second electrical connection, so that the input terminal of the current transformer 100 and the capacitor 23 can be electrically connected. And, the number of the second electric connectors 27 and the number of the direct current connecting terminals 41 are two, and the two second electric connectors 27 and the two direct current connecting terminals 41 are in one-to-one correspondence.

And, as shown in fig. 5, the control assembly 20 further includes: and one end of the fixing piece 28 is fixedly connected with the cover plate 22, the other end of the fixing piece 28 is abutted against the edge of the power device 21, and a groove is formed in the box body 10 and corresponds to the fixing piece 28 so as to avoid the fixing piece 28. So arranged, the fixing member 28 is provided on the power device 21, and one end of the fixing member 28 is fixedly connected with the cover plate 22, and the other end of the fixing member 28 abuts against the edge of the power device 21, so that the power device 21 can be fixed on the cover plate 22. And, the fixing piece 28 is abutted on the power device 21, so that the tightness between the power device 21 and the cover plate 22 is improved, and the use safety of the power device 21 is improved.

And, since the fixing member 28 is fixed on the cover plate 22, and the fixing member 28 is fixed on the cover plate 22 by screws, so that the thickness of the corresponding position of the fixing member 28 is thicker, in order to ensure the dimension of the heat dissipation flow channel in the height direction, a groove is provided on the case 10, so that the constant pipe diameter of the heat dissipation flow channel can be ensured by the groove, thereby ensuring the normal heat dissipation of the power device 21.

Referring to fig. 2, the control assembly 20 further includes: the circuit board 29, the capacitor 23 and the power device 21 are electrically connected with the circuit board 29, and a mounting column is arranged on one side of the fixing piece 28, which faces away from the cover plate 22, and the circuit board 29 is fixedly connected with the mounting column. That is, a circuit board 29 is provided on the side of the power device 21 and the capacitor 23 facing away from the cover plate 22, and a mounting post is provided on the mount 28, so that the circuit board 29 can be mounted by the mounting post. Similarly, mounting posts may be provided on the cover 22 to mount the circuit board 29.

Specifically, there may be two circuit boards 29, and the two circuit boards 29 are respectively disposed above the capacitor 23 and the power device 21. In this way, when the capacitor 23 or the power device 21 is damaged, the corresponding circuit board 29 is only required to be disassembled for maintenance, which is beneficial to reducing the maintenance cost of the converter 100. And, the two circuit boards 29 are a driving circuit board 29 and a control circuit board 29, respectively.

Wherein, referring to fig. 2-4, the terminal includes: the control terminal 43, the control terminal 43 and the control assembly 20 are electrically connected, the control terminal 43 is arranged at one side of the box 10 in the length direction, the control terminal 43 and the water pipe joint 30 are arranged at intervals, and the control terminal 43 is fixed on the side wall of the box 10. Wherein, the control terminal 43 is provided on the side wall of the case 10, that is, the control terminal 43 does not occupy the external space of the case 10 additionally, so that the structure of the current transformer 100 is compact and the space is not occupied additionally when being installed. Specifically, the control terminal 43 and the circuit board 29 are electrically connected.

And, control of the converter 100 can be achieved through the control terminal 43, for example, the converter 100 is controlled to output corresponding current through the control terminal 43 so as to provide the required electric energy, thereby meeting the technical requirements of the production process, the scientific test and the like; for example, the safety of operators and technical equipment and the prevention of inadmissible overloads can be ensured, and the circuit should be automatically protected and locked.

The control terminal 43 and the dc connection terminal 41 and the ac connection terminal 42 are not provided on the same side of the case 10, that is, the control terminal 43 is separated from the dc connection terminal 41 and the ac connection terminal 42, which increases the anti-interference capability of the inverter 100.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A current transformer (100), characterized by comprising:

the box body (10), the said box body (10) has heat dissipation runners;

the control assembly (20) is arranged in the box body (10) and is opposite to the heat dissipation flow channel;

the water pipe joint (30) is arranged on one side of the box body (10) in the length direction and is communicated with the heat dissipation flow channel;

and a plurality of terminals which are arranged on at least one side of the box body (10) in the length direction and/or the width direction and are electrically connected with the control assembly (20).

2. The current transformer (100) of claim 1, wherein the water connection (30) comprises: connecting plate (31), inlet tube (32) and outlet pipe (33), inlet tube (32) with outlet pipe (33) are fixed in connecting plate (31), inlet tube (32) with outlet pipe (33) all with heat dissipation runner intercommunication, connecting plate (31) with the side fixed connection of box (10).

3. The converter (100) according to claim 2, wherein the case (10) is provided with an avoidance groove (11) on one side in the length direction, a first connecting hole is formed in the bottom of the avoidance groove (11), a second connecting hole is formed in the connecting plate (31) and is arranged in the avoidance groove (11), and a fastener passes through the second connecting hole and is connected with the first connecting hole.

4. A current transformer (100) according to claim 3, further comprising: the sealing element (34), the tank bottom of dodging groove (11) is provided with holding tank (12), sealing element (34) hold in holding tank (12) and press from both sides locate connecting plate (31) with between holding tank (12).

5. The current transformer (100) of claim 1, wherein the control assembly (20) comprises: the power device comprises a power device (21) and a cover plate (22), wherein the cover plate (22) is arranged on the box body (10) in a covering mode and forms a heat dissipation flow channel with the box body (10), a through hole is formed in the cover plate (22), the power device (21) is fixed on one side, deviating from the box body (10), of the cover plate (22), a plurality of heat dissipation teeth arranged at intervals are arranged on the power device (21), and the heat dissipation teeth penetrate through the through hole.

6. The current transformer (100) of claim 5, wherein the control assembly (20) further comprises: the capacitor (23), the capacitor (23) is fixed in the apron (22) deviate from one side of box (10) and with power device (21) interval setting and with power device (21) electricity connection.

7. The current transformer (100) of claim 6, wherein the terminals comprise: the direct current connection terminal (41) and the alternating current connection terminal (42), the direct current connection terminal (41) and the alternating current connection terminal (42) are arranged on one side of the box body (10) in the width direction, the direct current connection terminal (41) and the capacitor (23) are electrically connected, and the alternating current connection terminal (42) and the power device (21) are electrically connected.

8. The current transformer (100) of claim 7, wherein the control assembly (20) further comprises: the insulation positioning block (24) and the current sensor (25), the insulation positioning block (24) is arranged on one side of the cover plate (22) and is fixedly connected with the box body (10), the current sensor (25) is arranged on the insulation positioning block (24), and the current sensor (25) is arranged between the alternating current connecting terminal (42) and the power device (21).

9. The current transformer (100) of claim 8, wherein the control assembly (20) further comprises: the first electric connecting piece (26), first electric connecting piece (26) set up on insulating locating piece (24) and wear to establish current sensor (25), first electric connecting piece (26) electricity is connected between power device (21) and alternating current connection terminal (42).

10. The current transformer (100) of claim 8, wherein the control assembly (20) further comprises: -a second electrical connection (27), said second electrical connection (27) being electrically connected between said direct current connection terminal (41) and said capacitor (23).

11. The current transformer (100) of claim 6, wherein the control assembly (20) further comprises: the power device comprises a fixing piece (28), wherein one end of the fixing piece (28) is fixedly connected with a cover plate (22), the other end of the fixing piece is abutted to the edge of the power device (21), a groove is formed in the box body (10), and the groove corresponds to the fixing piece (28) so as to avoid the fixing piece (28).

12. The current transformer (100) of claim 11, wherein the control assembly (20) further comprises: the circuit board (29), electric capacity (23) with power device (21) all with circuit board (29) electricity is connected, mounting (28) deviate from one side of apron (22) is provided with the erection column, circuit board (29) with erection column fixed connection.

13. The current transformer (100) of claim 1, wherein the terminals comprise: the control terminal (43), control terminal (43) with control assembly (20) electricity is connected, control terminal (43) set up in box (10) in one side of length direction and with water pipe head (30) interval setting, control terminal (43) are fixed in the lateral wall of box (10).

Images