CN217241116U - Inverter with a voltage regulator - Google Patents

Abstract

The embodiment of the present application provides an inverter, this inverter includes: the device comprises an inversion module, a power supply module and a power supply module, wherein a golden finger connector is arranged on the inversion module, and a plurality of golden fingers arranged at intervals are arranged on the golden finger connector; the golden fingers at least comprise power interface golden fingers and signal interface golden fingers, the power interface golden fingers are used for inputting and outputting current, and the signal interface golden fingers are used for transmitting signals. The inverter in the embodiment of the application has the advantages of small volume and low production cost, and can solve the technical problem that the inverter in the prior art cannot be unified and standardized to be produced.

Description

Inverter with a voltage regulator

Technical Field

The embodiment of the application relates to the technical field of power electronics, in particular to an inverter.

Background

The inverter is an electronic device capable of converting direct current into alternating current, and is widely applied to the fields of aerospace, new energy, elevator emergency, urban landscape energy-saving engineering, cold light guideboard engineering, various inverter emergency power supplies, household appliances, communication power supplies and the like. In the field of communication power supply, a 48V busbar system is generally adopted, and in an area where the mains supply is unstable or does not have the mains supply, an inverter is used for supplying electric energy to a station navigation lamp and a lighting system.

In the prior art, an inverter module is arranged on an inverter, a plurality of terminals are arranged at an end of the inverter module, the plurality of terminals are different in type, and some of the terminals are cable terminals and some of the terminals are contact pin terminals.

However, the number and kinds of terminals on different inverters are not completely the same, so that the inverter module and the insertion frame matched with the inverter module are difficult to be produced in a standardized manner, and the cost of the inverter is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an inverter, the inverter is small in size and low in production cost, and the technical problem that the inverter cannot be unified and standardized in the prior art can be solved.

An embodiment of the present application provides an inverter, including: the device comprises an inversion module, a power supply module and a power supply module, wherein a golden finger connector is arranged on the inversion module, and a plurality of golden fingers arranged at intervals are arranged on the golden finger connector; the golden fingers at least comprise power interface golden fingers and signal interface golden fingers, the power interface golden fingers are used for inputting and outputting current, and the signal interface golden fingers are used for transmitting signals.

The inverter in the embodiment of the application can unify the terminals of the inverter module by arranging the golden finger connector on the inverter module, so that the uniform and standardized production of the inverter module can be facilitated, and the production cost can be reduced. Because the golden finger connector structure is comparatively flat, so connect and can not make contravariant module volume increase a lot on contravariant module, be favorable to contravariant module's little volume development. In addition, through setting up the power interface golden finger, realize the input of direct current and the output of alternating current to make the contravariant module convert the direct current into the alternating current, through setting up signal interface golden finger, can realize the transmission of signal, in order to realize functions such as current-sharing control, hot plug and prevent slow-witted discernment of the parallel operation of exchanging between the different contravariant modules.

In an alternative implementation, the power interface gold finger includes: a direct current input golden finger and an alternating current output golden finger.

Through the arrangement of the direct current input golden finger and the alternating current output golden finger, direct current can be input into the inverter, then alternating current is output from the alternating current output golden finger, and direct current is converted into alternating current.

In an optional implementation manner, the gold finger connector comprises a circuit board, and a plurality of gold fingers are arranged on the circuit board at intervals; the circuit board is fixed at the end of the inverter module.

The circuit board can be used for supporting the golden finger, so that the golden finger is arranged on the circuit board and is arranged on the inversion module through the circuit board, and the golden finger and the inversion module are fixedly connected conveniently.

In an optional implementation manner, the circuit board is a block, and a plurality of gold fingers are arranged on the circuit board; the circuit board is fixedly connected to the first end of the inversion module; the plurality of golden fingers are arranged at one end of the circuit board, which is far away from the inversion module.

By arranging the circuit board and arranging all the golden fingers on the circuit board, the number of the circuit boards can be saved, and the structure of the inverter module is simplified; in addition, by arranging the circuit board, the golden finger can be arranged at one end of the inverter module through the power board, so that input and output can be performed at the same end, wiring can be facilitated, wiring errors possibly caused during parallel operation wiring can be reduced, and connection with other components (such as an insertion frame) is facilitated. In addition, the circuit board is arranged at the first end of the inverter module, so that the inverter module can realize power and signal transmission at the same end, and hot plugging is conveniently realized.

In an alternative implementation, the circuit board includes a first circuit board; the first circuit board is provided with the direct-current input golden finger and a signal interface golden finger; the first circuit board is fixedly connected to the first end of the inversion module; the direct current input golden finger and the signal interface golden finger are arranged at one end of the first circuit board, which is far away from the inversion module, at intervals.

In an alternative implementation, the circuit board further comprises a second circuit board; the second circuit board is provided with the alternating current output golden finger; the second circuit board is fixedly connected to the second end of the inverter module; the alternating current output golden finger is arranged at one end, deviating from the inversion module, of the second circuit board.

Through setting up first circuit board and second circuit board can set up direct current input end and alternating current output end at the both ends of contravariant module, just so can realize "go forward back and go out" or "go forward after the back" mode of connection to make this contravariant module can adapt to more inverters of different structures, improve the suitability. In addition, the risk of wrong connection of a line can be reduced by separately arranging the direct current input and the alternating current output, so that the wiring time is shortened, and the working efficiency is improved.

In an alternative implementation, the second end of the inverter module is provided with a pull ring.

Set up the pull ring through the second end at the contravariant module, can conveniently dismantle the contravariant module from the dc-to-ac converter, and then practice thrift the dismantlement time when overhauing, and then practice thrift the maintenance cost.

In an optional implementation manner, the dc input golden finger includes: the first golden finger is used for being connected with the positive pole of the direct current; and the second golden finger is used for being connected with the negative electrode of the direct current.

In an optional implementation manner, the direct current input golden finger further comprises a slow start golden finger.

The current of the direct current input end can slowly rise and slowly fall by setting the slow start golden finger, and then oscillation of the direct current power supply can be prevented when hot plugging is carried out. Therefore, the hot plug of the inversion module can be realized by setting the soft start golden finger in the embodiment of the application.

In an optional implementation manner, the ac output golden finger includes: the third golden finger is used for outputting a live wire of alternating current; and the fourth golden finger is used for outputting a zero line of alternating current.

In an optional implementation manner, the alternating current output golden finger further comprises a grounding golden finger.

Through setting up ground connection golden finger, can make the output of exchanging with be connected with the protection ground, and then improve the security of contravariant module.

In an alternative implementation, the signal interface gold finger includes: and the communication parallel machine golden finger and the northbound communication golden finger.

The alternating current parallel operation between a plurality of inversion modules can be realized by arranging the alternating current parallel operation golden finger, and the uniform current output of the alternating current parallel operation is ensured. The power density of the inverter can be improved through the alternating current parallel operation to adapt to a high-power load, and compared with the inverter in the prior art which can only be used independently, the inverter in the embodiment of the application can be subjected to the alternating current parallel operation, and the adaptability of the inverter can be improved. Through setting up northbound communication golden finger, can monitor the operating condition of different contravariant modules, conveniently monitor whether the contravariant module breaks down to reduce the maintenance cost.

In an optional implementation manner, the ac parallel operation golden finger includes: the power frequency synchronous signal golden finger is used for frequency synchronization during alternating current parallel operation; the carrier synchronization signal golden finger is used for controlling the switching circulation of the alternating current parallel operation; and the AC parallel operation CAN signal golden finger is used for current sharing control during AC parallel operation.

In an optional implementation manner, the ac parallel operation golden finger further includes: the inversion bypass switching signal golden finger is used for realizing switching between inversion output and bypass output; the switching speed of the gold finger of the inversion bypass switching signal is 10 MS/s.

In an optional implementation manner, the northbound communication golden finger includes: and the northbound CAN communication signal golden finger is used for monitoring the communication signal.

Through setting up the north CAN communication signal golden finger, CAN monitor the communication signal of contravariant module to judge whether this contravariant module breaks down according to this communication signal.

In an optional implementation manner, the mobile terminal further comprises an insertion frame; wherein at least one of the inverter modules is disposed within the insert frame; and at least part of the gold fingers in the plurality of gold fingers are electrically connected with the plug frame.

Insert the frame through the setting, can insert the frame with the contravariant module setting, then connect through inserting the frame and other equipment, and then realize the contravariant function.

In an optional implementation manner, a terminal matched with the golden finger connector is arranged on the inserting frame; at least part of the golden fingers are matched and connected with the terminals so as to electrically connect the inversion module and the plug frame.

Through set up on inserting the frame with golden finger connector complex terminal, can make things convenient for the golden finger connector to insert the frame and connect to, because the structure of golden finger connector is the platykurtic, and the structure is unified, so also unified rather than complex terminal structure, and then make the structure of inserting the frame be connected with golden finger connector also unified, the structure of whole dc-to-ac converter just can unified standardized production like this, can improve the production efficiency of dc-to-ac converter like this, thereby reduced the manufacturing cost of dc-to-ac converter.

Drawings

Fig. 1 is a schematic structural diagram of an inverter according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an inverter module of an inverter according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a gold finger connector of an inverter according to an embodiment of the present application;

fig. 4 is a side view of an inverter module of an inverter according to an embodiment of the present application;

fig. 5 is an exploded view of a gold finger connector of an inverter according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an inverter according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an inverter module of an inverter according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a gold finger connector of an inverter according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an inverter according to an embodiment of the present application.

Description of reference numerals:

100-an inverter;

110-an inverter module;

120-inserting a frame; 121-front side wall; 1211-a receiving groove; 122-a retaining wall; 123-a top wall;

111-a first end of an inversion module; 112-a second end of the inverter module;

113-gold finger connectors; 113 a-gold finger;

1131 — power interface gold finger; 1131a — direct current input golden finger;

1131b — first gold finger; 1131c — second gold finger; 1131 d-start the golden finger slowly;

1131i — pre-charging golden finger; 1131e — alternate current output golden finger;

1131f — third gold finger; 1131 g-fourth gold finger; 1131h, grounding the golden finger;

1132 — signal interface gold finger; 1132 a-north communication gold finger; 1132 b-AC parallel machine golden finger;

1132 c-power frequency synchronization signal golden finger; 1132 d-carrier synchronization signal gold finger;

1132 e-AC parallel connection CAN signal golden finger; 1132 f-inverting bypass switching signal golden finger;

1132 g-northbound CAN communication signal gold finger; 1132 h-signal grounding gold finger;

1133-circuit board; 1133a — first circuit board; 1133b — a second circuit board;

114-tab.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example" or "some examples" and the like are intended to indicate 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 present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be included in any suitable manner in any one or more embodiments or examples.

In addition, in the present application, directional terms such as "front", "rear", etc., are defined with respect to the schematically disposed orientation of components in the drawings, it being understood that these directional terms are relative concepts that are intended for relative description and clarification, and that they may vary accordingly with the orientation in which the components are disposed in the drawings.

In the embodiment of the present application, "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

With the development of power electronic technology, people can not leave various power electronic devices in daily life, and particularly under the condition that no commercial power exists or the commercial power is unstable, people need an inverter to convert direct current into alternating current to meet the needs of people.

In the field of communication power supply, a 48V busbar system is generally adopted, and in an area where the mains supply is unstable or does not have the mains supply, an inverter is used for supplying electric energy to a station navigation lamp and a lighting system.

For example, in foreign countries, due to the high popularity of automobiles, the inverter can be used for connecting the storage battery of the automobile when the automobile is going out for work or travelling, and then electric appliances and various tools are driven to work. The on-board inverter output through the cigarette lighter is of 20W, 40W, 80W, 120W to 150W power specification. And the other larger power inverter power supply is connected to the battery through a connecting wire. Connecting the household appliance to the output of the power converter enables the use of a variety of appliances in the vehicle. Usable electric appliances are: mobile phones, notebook computers, digital video cameras, lighting lamps, electric shavers, CD machines, game machines, palm computers, electric tools, vehicle-mounted refrigerators, and various traveling, camping, medical first-aid appliances.

However, the inverters in the prior art have various structures, do not have a unified standard, and most of the inverters are used individually, which results in a technical problem that the inverters cannot be applied in some high-power scenarios. That is to say, the application scenarios of the existing inverter are very limited, and cannot meet the requirements of various powers.

In order to solve the technical problem, an embodiment of the present application provides an inverter, and through setting a gold finger connector, an ac parallel operation of a plurality of inverter modules can be realized, so as to adapt to a high-power application scenario. In addition, the shape of the golden finger connector is uniform, so that uniform and standardized production of the inverter is facilitated, and the cost can be effectively saved.

It should be noted that the inverter in the embodiment of the present application may be applied to a dc 48V voltage input and an ac 220V voltage output scenario, and may also be applied to other dc input and ac output scenarios.

The specific structure of the inverter according to the embodiment of the present application will be described in detail below.

Fig. 1 is a schematic structural diagram of an inverter according to an embodiment of the present application. Fig. 2 is a schematic structural diagram of an inverter module of an inverter according to an embodiment of the present application.

As shown in fig. 1, the present embodiment provides an inverter 100 including: the inverter module 110 and the insertion frame 120, wherein three inverter modules 110 are disposed in the insertion frame 120. Of course, one, two, four or more inverter modules 110 may be disposed in the insertion frame 120, and the number of inverter modules 110 disposed in the inverter 100 is not limited in the embodiments of the present application.

As shown in fig. 1, the insertion frame 120 is a box-shaped structure with an opening at one end, a receiving groove 1211 is recessed inward on a front side wall 121 of the insertion frame 120, the receiving groove 1211 includes two blocking walls 122 disposed opposite to each other, and a top wall 123, a bottom wall and a rear groove wall disposed between the two blocking walls 122, wherein two ends of the top wall 123 are respectively fixed to top ends of the two blocking walls 122, two ends of the rear groove wall are respectively connected to side edges of the two blocking walls 122, the bottom wall and the top wall 123 are disposed opposite to each other, that is, two ends of the bottom wall are respectively fixed to bottom ends of the two blocking walls 122. The two retaining walls 122, the top wall 123, the bottom wall and the rear groove wall together enclose an accommodating space of the inserting frame 120.

For convenience of description, a direction of the receiving groove 1211 from one of the blocking walls 122 to the other blocking wall 122 may be taken as a width direction (a direction in fig. 1) of the receiving groove 1211. The three inverter modules 110 are disposed in the receiving groove 1211 in parallel along the width of the insertion frame 120. The notch of the receiving groove 1211 is disposed opposite to the rear groove wall.

A female terminal (not shown) is disposed at the bottom of the receiving groove 1211, and the female terminal is electrically connected to the inverter module 110.

Through set up on inserting frame 120 with golden finger connector 113 complex terminal, can make things convenient for golden finger connector 113 to insert frame 120 and connect, and, because golden finger connector 113's structure is the platykurtic, and the structure is unified, so also unified with its complex terminal structure, and then make the structure of inserting frame 120 be connected with golden finger connector 113 also unified, like this whole inverter 100's structure just can unified standardized production, can improve inverter 100's production efficiency like this, thereby reduced inverter 100's manufacturing cost.

The first end 111 of the inverter module is disposed in the receiving groove 1211, and the second end 112 of the inverter module is located at the notch of the receiving groove 1211. In addition, it should be noted that, besides the inverter module 110, other devices may be disposed in the insertion frame 120, which may be specifically set according to specific requirements, and are not specifically limited herein.

As shown in fig. 2, a gold finger connector 113 may be disposed on the inverter module 110, wherein the gold finger connector 113 has a plurality of gold fingers 113a disposed at intervals; the gold finger 113a may include: a power interface finger 1131 and a signal interface finger 1132. The power interface gold fingers 1131 are used for inputting and outputting current, for example, the power interface gold fingers 1131 can realize inputting of direct current and outputting of alternating current. The signal interface gold finger 1132 is used for signal transmission to realize functions of current sharing control, hot plugging, fool-proof identification and the like of an alternating current parallel machine between different inverter modules 110.

The inverter 100 in the embodiment of the present application can unify the terminals of the inverter 100 module by providing the gold finger connector 113 on the inverter module 110, so that the uniform standardized production of the inverter module 110 can be facilitated, and the production cost can be reduced. Because the gold finger connector 113 has a flat structure, the connection to the inverter module 110 does not increase the volume of the inverter module 110 so much, which is beneficial to the development of small volume of the inverter module 110. In addition, the power interface gold finger 1131 is arranged to convert direct current into alternating current for the inverter module 110, and the signal interface gold finger 1132 is arranged to realize functions of current sharing control, hot plug, fool-proof identification and the like of alternating current parallel operation between different inverter modules 110.

It should be noted that, a connecting finger (connecting finger) is computer hardware such as: all signals are transmitted by the golden fingers between the memory bank and the memory slot, between the display card and the display card slot and the like. The gold finger consists of a plurality of golden conductive contacts, which are called "gold fingers" because their surfaces are gold plated and the conductive contacts are arranged like fingers. Gold fingers are often used in signal transmission hardware because of their metal surface's strong oxidation resistance and strong conductivity.

Since the transmission power of the gold finger is larger, it can be satisfied to increase the power density of the inverter module 110. Moreover, the gold finger is a flat sheet structure, so that the gold finger connector 113 has a smaller volume than the wire terminal in the prior art, and is convenient to connect with the plug frame 120.

Fig. 3 is a schematic structural diagram of a gold finger connector of an inverter according to an embodiment of the present application. As shown in fig. 3, in the present embodiment, the gold finger connector 113 includes a front surface and a back surface, wherein the gold fingers 113a are disposed on both the front surface and the back surface, and the gold fingers 113a on the front surface and the back surface may be disposed oppositely.

It should be noted that the shape of the gold finger shown in the drawings does not represent the actual shape of the gold finger, and the shape of the gold finger in the drawings is only a schematic drawing drawn for distinguishing different gold fingers, and does not limit the protection scope of the technical solution of the present application.

The functions of the gold fingers 113a on the front and back sides of the gold finger connector 113 may be the same or different. Exemplarily, the following steps are carried out: for some power interface gold fingers 1131, the gold fingers 113a located at opposite positions on the front and back sides function identically; for some signal interface fingers 1132, the functionality of the fingers 113a at opposing locations on the front and back will generally be different.

In this embodiment, the power interface gold finger 1131 may include: a dc input gold finger 1131a and an ac output gold finger 1131 e. The dc input gold finger 1131a is located at one end of the gold finger connector 113, and the ac output gold finger 1131e is located at the other end of the gold finger connector 113, so that during wiring, since the dc input gold finger 1131a is far away from the ac output gold finger 1131e, it is not easy to connect the line by mistake. The dc input finger 1131a can be used for inputting dc 48V voltage, for example, and the ac output finger 1131e can realize outputting ac 220V voltage, for example.

By providing the dc input fingers 1131a and the ac output fingers 1131e, dc power can be input to the inverter 100, and ac power can be output from the ac output fingers 1131e, thereby converting dc power into ac power.

Specifically, the dc input gold finger 1131a may include: a first gold finger 1131b for connecting with the positive electrode of the direct current; and a second gold finger 1131c for connecting to a negative electrode of the direct current. The first gold finger 1131b and the second gold finger 1131c are disposed in parallel at one end of the gold finger connector 113, and when in use, the positive electrode of the power source can be connected to the first gold finger 1131b, and the negative electrode of the power source can be connected to the second gold finger 1131c, so that the inverter 100 can be connected to the dc power source, and then the ac voltage can be output through the ac output terminal.

In some embodiments, the dc input gold finger 1131a further includes a soft start gold finger 1131 d.

Through setting up the slow start golden finger 1131d, can realize that the electric current of direct current input end can rise slowly and descend slowly, and then can prevent DC power supply's oscillation when the hot plug, because the oscillation process of power probably arouses the error code, or the system restarts, also probably arouses the connector to strike sparks, and then arouses the conflagration, so through setting up the slow start golden finger 1131d, can prevent DC power supply's oscillation when the hot plug, and then can protect power and golden finger connector 113. Therefore, in this embodiment of the application, the inverter module 110 can realize hot plug by setting the soft start gold finger 1131 d.

It should be noted that hot plugging is an operation of plugging and unplugging a system in a live state when the system works normally, and does not affect the system at all. The influence of hot plug on the system has two main aspects: firstly, when hot plugging is carried out, mechanical contacts of the connector bounce at the moment of contact to cause power oscillation, the oscillation process can cause system power to drop to cause error codes or system restart, and the connector can be ignited to cause fire. Secondly, during hot plug, due to the charging effect of a large-capacity energy storage capacitor of the system, a large impact current can appear in the system, and the current of the capacitor is reduced in an exponential trend during charging, so that the impact current is very large when the capacitor is just charged, and the impact current can possibly burn a device power supply protective tube, so that the impact current must be controlled during hot plug to change according to an ideal trend. This application embodiment slowly starts golden finger 1131d through setting up, and the electric current vibration when can reducing the hot plug to can realize the hot plug, overhaul like this and maintain and get up according to the convenience. In addition, in order to prevent the current of the capacitor from being too large when the circuit is started, a pre-charging gold finger 1131i may be further included, and the pre-charging gold finger 1131i may charge the capacitor in advance when the dc input terminal is started, so as to prevent the current of the capacitor from being too large.

In this embodiment, the ac output golden finger 1131e may include: a third gold finger 1131f for outputting a live wire of alternating current; and a fourth gold finger 1131g for outputting a zero line of the alternating current. This allows the connection of a load at the ac output. Of course, in some embodiments, the third gold finger 1131f and the fourth gold finger 1131g may both be a hot wire outputting alternating current, which may be suitable for a dual-hot wire application scenario.

In addition, the ac output gold finger 1131e further includes a grounding gold finger 1131 h. By providing the grounding gold finger 1131h, the ac output terminal can be connected to a protection ground, thereby improving the safety of the inverter module 110.

In this embodiment, the signal interface gold finger 1132 may include: an ac parallel operation golden finger 1132b and a northbound communication golden finger 1132 a.

The alternating current parallel operation between the plurality of inversion modules 110 can be realized by setting the alternating current parallel operation golden finger 1132b, and the uniform current output of the alternating current parallel operation is ensured. At present, for the inverter 100 in the prior art cannot perform ac parallel operation, the inverter 100 in the present application can perform ac parallel operation, so as to adapt to a high-power application scenario, and further improve the application range of the inverter 100. Through setting up northbound communication golden finger 1132a, can monitor different contravariant module 110's operating condition, conveniently monitor contravariant module 110 and whether break down to reduce the maintenance cost.

It should be noted that, in some embodiments, the signal interface golden finger 1132 may also protect the signal grounding golden finger 1132h1131h, so that the signal can be grounded to safely transmit the signal. In addition, in some embodiments, the signal interface gold finger 1132 may further include an address identification gold finger, which may facilitate a system to identify an address of the gold finger, so that when the inverter module 110 fails, it is convenient to determine which gold finger position has a problem, and thus, time for troubleshooting is saved.

In this embodiment, the ac merge key 1132b may include: the power frequency synchronization signal gold finger 1132c may be used for frequency synchronization during ac parallel operation (for example, the frequency of the commercial power is 50Hz, and the power frequency synchronization signal gold finger 1132c controls the frequency of the output ac to be 50 Hz); the carrier synchronization signal golden finger 1132d is used for controlling the switching circulation of the alternating current parallel operation; and the AC parallel operation CAN signal golden finger 1132e is used for current sharing control during AC parallel operation.

It should be noted that the positions, shapes, and numbers of the power frequency synchronization signal gold finger 1132c, the carrier synchronization signal gold finger 1132d, and the ac parallel operation CAN signal gold finger 1132e do not limit the protection range of the present application, and any technical scheme provided with the power frequency synchronization signal gold finger 1132c, the carrier synchronization signal gold finger 1132d, and the ac parallel operation CAN signal gold finger 1132e belongs to the protection range of the present application. In addition, some inverters 100 that do not need the ac parallel operation may not be provided with one or more of the power frequency synchronization signal gold finger 1132c, the carrier synchronization signal gold finger 1132d, and the ac parallel operation CAN signal gold finger 1132 e.

It should be noted that, in some embodiments, the ac merge golden finger 1132b may further include: the inversion bypass switching signal golden finger 1132f is used for realizing switching between inversion output and bypass output; the switching speed of the gold finger of the variable bypass switching signal can be 10 MS/s. This facilitates current sharing between different inverter modules 110.

Note that MS/s: the unit "megapots per second", i.e., how many megapots can be saved per second. 10 ms/s. The system can store 10 Mbps and is mainly used for signal and data acquisition.

In an alternative implementation, the northbound communication gold finger 1132a may include: and the northbound CAN communication signal gold finger 1132g is used for monitoring the communication signal. By setting the northbound CAN communication signal gold finger 1132g, the communication signal of the inverter module 110 CAN be monitored, so as to determine whether the inverter module 110 has a fault according to the communication signal. For example, in use, the system may transmit a signal to the north CAN communication signal gold finger 1132g to monitor whether the inverter module 110 is in an operating state.

It should be noted that some rigid nodes may be further disposed on the gold finger connector 113, so that a user may control the inverter module 110 by using the rigid nodes, for example: the inverter module 110 may be turned on or off.

Fig. 4 is a side view of an inverter module of an inverter according to an embodiment of the present application. As shown in fig. 4, the gold finger connector 113 may further include a circuit board 1133, and a plurality of gold fingers 113a are arranged on the circuit board 1133 at intervals; the circuit board 1133 is secured to the first end 111 of the inverter module, although in some embodiments, the circuit board 1133 may also be secured to the second end 112 of the inverter module.

In the embodiment of the present application, as shown in fig. 3 and 4, the circuit board 1133 is a block, and a plurality of gold fingers 113a are all disposed on the circuit board; the dc input gold finger 1131a and the signal interface gold finger 1132 are disposed at the bottom end of the circuit board 1133, the ac output gold finger 1131e is disposed at the top end of the circuit board 1133, and a gap is disposed between the ac output gold finger 1131e and the dc input gold finger 1131a so as to distinguish the dc input end from the ac output end. As shown in fig. 4, the circuit board 1133 is fixedly connected to the first end 111 of the inverter module; the plurality of gold fingers 113a are disposed at an end of the circuit board 1133 facing away from the inverter module 110.

By arranging one circuit board 1133 and arranging all the gold fingers on the circuit board 1133, the number of the circuit boards 1133 can be saved, and the structure of the inverter module 110 is simplified; moreover, by providing a circuit board 1133, the gold finger 113a can be disposed at one end of the inverter module 110 through the circuit board 1133, so as to input and output at the same end, thereby being able to be wired conveniently and connected with other components (e.g., the plug frame 120) conveniently. In addition, by disposing the circuit board 1133 at the first end of the inverter module 110, the inverter module 110 can implement power and signal transmission at the same end, thereby facilitating hot plug.

The circuit board 1133 may provide support for the arrangement of the gold finger 113a, so that the gold finger 113a is arranged on the circuit board 1133 and is mounted on the inverter module 110 through the circuit board 1133, which facilitates the fixed connection between the gold finger 113a and the inverter module 110. In addition, the circuit board 1133 is provided with some traces, which can realize electrical connection between the gold finger connector 113 and other components of the inverter module 110, so as to realize the function of converting direct current into alternating current by the inverter module 110.

As shown in fig. 3, a plurality of gold fingers 113a are disposed on the front surface of the circuit board 1133, and the plurality of gold fingers 113a are disposed at intervals in the longitudinal direction, and a plurality of gold fingers 113a corresponding to the front surface of the circuit board 1133 are disposed on the back surface of the circuit board 1133. The gold fingers 113a partially have the same structure, and the gold fingers 113a partially have different structures. In the present embodiment, the number and shape of the gold fingers 113a are not particularly limited.

In the present embodiment, the height h of the inverter module 110 may be 1U, the width L1 may be 2.5U, and the length d1 may be 269 mm. The inverter module 110 can then be inserted into an insert frame 120 of the type 1U by 19 inches.

Note that the insert frame 120 of the type 1U × 19 inches is a prior art insert frame 120, and the insert frame 120 has a dimension height H of 1U, a width L2 of 19 inches, and a length d2 of about 269 mm.

The height of the inverter module 110 in the embodiment of the present application includes, but is not limited to, the above-mentioned height h is 1U, wherein 1U is equal to 44.45mm, and in practical applications, the height h of the inverter module 110 may be 4.08mm, for example, the height h of the inverter module 110 may be 40-44.45 mm. Illustratively, the height h of the inverter module 110 may be a suitable value such as 41mm, 42mm, 43mm, or 44 mm.

The length d1 of the inverter module 110 in the embodiment of the present application may be determined according to the length d2 of the insertion frame 120, and the lengths of the inverter module 110 may be different in different types of insertion frames 120, which is not specifically limited in the embodiment of the present application.

The width L1 of the inverter module 110 in the embodiment of the present application includes, but is not limited to, 2.5U as described above, and in practical applications, the width L1 of the inverter module 110 may be 2U-3U. Illustratively, the width L1 of the inverter module 110 may be 100mm, 105mm, 110mm, etc. as appropriate. The width L1 of the inverter module 110 is related to the number of the inverter modules 110 disposed in the insertion frame 120, and therefore, may be specifically set according to specific situations, and is not specifically limited herein.

It will be appreciated that for the height h of the circuit board ₀ As shown in fig. 3, may be smaller than the height h of the inverter module 110.

In other embodiments, the size of the inverter module 110 may be other values, and the inverter 100 provided with the gold finger connector 113 is within the protection scope of the present disclosure.

It should be noted that the numerical values and numerical ranges related to the embodiments of the present application are approximate values, and there may be a certain range of errors due to the manufacturing process, and such errors may be considered as negligible by those skilled in the art.

In addition, it is understood that the inverter module 110 in the embodiment of the present application may be disposed in the insertion frame 120 with 1U × 19 inches, and of course, may also be disposed in insertion frames 120 with other sizes and models, and may be specifically set according to specific situations.

Fig. 5 is an exploded view of a gold finger connector of an inverter according to an embodiment of the present application. As shown in fig. 5, the second end 112 of the inverter module is provided with a pull ring 114. The pull ring 114 is fixedly arranged at the second end 112 of the inverter module, and can be used for detaching the inverter module 110 from the inverter 100, and also can be used for conveniently installing the inverter module 110 in the insertion frame 120, so that the detachment time during maintenance can be shortened, and the maintenance cost is reduced.

As shown in fig. 5, the structure of the pull ring 114 is a strip-shaped structure protruding outward, the pull ring 114 may be fixedly connected to the inverter module 110 by a fastener, and the pull ring 114 may also be fixed to the inverter module 110 by glue, it should be noted that, in the embodiment of the present application, the structure of the pull ring 114 and the connection manner between the pull ring 114 and the inverter module 110 are not specifically limited, as long as the pull ring 114 is provided, and the pull ring 114 can be conveniently detached from the inverter module 110, which belongs to the protection range of the technical solution of the present application.

It should be noted that, in the embodiment of the present application, the gold finger connector 113 includes a circuit board 1133, all gold fingers 113a are disposed on the circuit board 1133, and the circuit board 1133 is disposed at the first end 111 of the inverter module. In other embodiments, the inverter module 110 may have other structures.

Fig. 6 is a schematic structural diagram of an inverter according to an embodiment of the present application. As shown in fig. 6, the present embodiment provides an inverter 100 including: the inverter module 110 and the insertion frame 120, wherein three inverter modules 110 are disposed in the insertion frame 120. Of course, one, two, four or more inverter modules 110 may be disposed in the insertion frame 120, and the number of inverter modules 110 disposed in the inverter 100 is not limited in the embodiments of the present application.

The first end 111 of the inverter module is disposed in the receiving groove 1211, and the second end 112 of the inverter module is located at the notch of the receiving groove 1211. In addition, it should be noted that, in addition to the inverter module 110, other devices may be disposed in the insertion frame 120, which may be specifically set according to specific requirements, and are not specifically limited herein.

Fig. 7 is a schematic structural diagram of an inverter module of an inverter according to an embodiment of the present application. As shown in fig. 7, a gold finger connector 113 may be disposed on the inverter module 110, wherein the gold finger connector 113 has a plurality of gold fingers 113a disposed at intervals; the gold finger 113a may include: a power interface finger 1131 and a signal interface finger 1132.

In this embodiment, the power interface gold finger 1131 may include: a dc input gold finger 1131a and an ac output gold finger 1131 e. The dc input gold finger 1131a may include: a first gold finger 1131b for connecting with the positive electrode of the direct current; and a second gold finger 1131c for connecting with a negative electrode of the direct current. The first gold finger 1131b and the second gold finger 1131c are disposed in parallel at one end of the gold finger connector 113, and when in use, the positive electrode of the power source can be connected to the first gold finger 1131b, and the negative electrode of the power source can be connected to the second gold finger 1131c, so that the inverter 100 can be connected to the dc power source, and then the ac voltage can be output through the ac output terminal. In addition, in some embodiments, the dc input gold finger 1131a may further include a slow start gold finger 1131d, and hot plugging of the inverter module 110 may be achieved by setting the slow start gold finger 1131d, so as to facilitate detachment.

In this embodiment, the ac output gold finger 1131e may include: a third gold finger 1131f for outputting a live wire of alternating current; and a fourth gold finger 1131g for outputting a zero line of the alternating current. This allows the connection of a load at the ac output. Of course, in some embodiments, the third gold finger 1131f and the fourth gold finger 1131g may both be a hot wire outputting alternating current, which may be suitable for a dual-hot wire application scenario. In addition, in some embodiments, the ac output gold finger 1131e further includes a grounding gold finger 1131h, and the grounding gold finger 1131h can connect the ac output terminal with a protection ground, so as to protect the circuit and improve the safety factor.

The signal interface gold finger 1132 may include: an ac parallel operation golden finger 1132b and a northbound communication golden finger 1132 a. In this embodiment of the application, the ac parallel operation golden finger 1132b may include: the power frequency synchronization signal gold finger 1132c may be used for frequency synchronization during the ac parallel operation; the carrier synchronization signal golden finger 1132d is used for controlling the switching circulation of the alternating current parallel operation; and the AC parallel operation CAN signal golden finger 1132e is used for current sharing control during AC parallel operation. Of course, in some embodiments, the ac merge golden finger 1132b may further include: and the inversion bypass switching signal golden finger 1132f is used for realizing switching between inversion output and bypass output so as to realize current-sharing output after alternating current parallel operation.

In an alternative implementation, the northbound communication gold finger 1132a may include: and the northbound CAN communication signal gold finger 1132g is used for monitoring the communication signal.

Fig. 8 is a schematic structural diagram of the gold finger connector 113 of the inverter 100 according to an embodiment of the present application. As shown in fig. 8, in the embodiment of the present application, the gold finger connector 113 includes a circuit board 1133 and gold fingers 113a disposed on the front and back sides of the circuit board 1133, wherein the gold fingers 113a on the front and back sides may be disposed oppositely.

In this embodiment, the circuit board 1133 includes a first circuit board 1133a, and a dc input gold finger 1131a and a signal interface gold finger 1132 are disposed on the first circuit board 1133 a; the first circuit board 1133a is fixedly connected to the first end 111 of the inverter module; the dc input gold finger 1131a and the signal interface gold finger 1132 are disposed at an end of the first circuit board 1133a away from the inverter module 110 at intervals. Circuit board 1133 further includes a second circuit board 1133 b; the second circuit board 1133b is provided with an alternating current output golden finger 1131 e; the second circuit board 1133b is fixedly connected to the second end 112 of the inverter module; the ac output gold finger 1131e is disposed at an end of the second circuit board 1133b away from the inverter module 110.

By arranging the first circuit board 1133a and the second circuit board 1133b, the dc input end and the ac output end can be arranged at two ends of the inverter module 110, so that a "forward-backward-forward" or "backward-forward" wiring manner can be realized, so that the inverter module 110 can adapt to more inverters 100 with different structures, and the applicability is improved. In addition, the risk of wrong connection of a line can be reduced by separately arranging the direct current input and the alternating current output, so that the wiring time is shortened, and the working efficiency is improved.

It should be noted that, in the embodiment, the sizes of the inverter module 110 and the insertion frame 120 may refer to the description of the embodiment in fig. 1, and are not described herein again, and it should be noted that the first circuit board 1133ah ₁ And a height h of the second circuit board 1133b ₂ Are all less than the height h of the inverter module 110.

It should be noted that, in the above embodiment, the inverter modules 110 in the same insertion frame 120 are of the same type, and in fig. 1, the circuit boards are all one, and are all disposed at the first end 111 of the inverter module, that is, in a "back-to-back" connection manner. In the embodiment shown in fig. 6, two circuit boards are used, and the dc input terminal is disposed at the first end 111 of the inverter module, and the ac output terminal is disposed at the second end 112 of the inverter module, i.e. a "back-to-front" connection manner. Of course, in some embodiments, different inverter modules 110 may be further disposed on one insertion frame 120, as shown in fig. 9, two inverter modules 110 in a "back-to-back-out" connection mode may be disposed, and one inverter module 110 in a "back-to-front-out" connection mode may be disposed. Therefore, the type and number of the inverter modules 110 provided in the insertion frame 120 of the inverter 100 are not particularly limited.

The terminal unification of inverter 100 module can be realized through set up golden finger connector 113 on contravariant module 110 to inverter 100 in this application embodiment, can make things convenient for the unified standardized production of contravariant module 110 like this to can reduction in production cost. Because the gold finger connector 113 has a flat structure, the connection to the inverter module 110 does not increase the volume of the inverter module 110 so much, which is beneficial to the development of small volume of the inverter module 110. In addition, the inverter module 110 can convert direct current into alternating current by setting the power interface gold finger 1131, and current sharing control, hot plug, fool-proof identification and other functions of an alternating current parallel machine between different inverter modules 110 can be realized by setting the signal interface gold finger 1132.

In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may for example be fixed or indirectly connected through intervening media, or may be interconnected between two elements or may be in the interactive relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is expressly intended that all such additional apparatus or elements be included within this description or this summary, and be constructed and operative in a particular orientation, and not limited to the specific embodiments disclosed herein. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (17)

1. An inverter, comprising: an inversion module is arranged on the base plate,

a golden finger connector is arranged on the inversion module, and a plurality of golden fingers arranged at intervals are arranged on the golden finger connector;

the golden fingers at least comprise power interface golden fingers and signal interface golden fingers;

the power interface golden finger is used for inputting and outputting current;

the signal interface golden finger is used for transmitting signals.

2. The inverter of claim 1, wherein the power interface gold finger comprises: a direct current input golden finger and an alternating current output golden finger.

3. The inverter of claim 2, wherein the gold finger connector comprises a circuit board,

the plurality of gold fingers are arranged on the circuit board at intervals;

the circuit board is fixed at the end of the inverter module.

4. The inverter according to claim 3, wherein the circuit board is a single piece, and a plurality of the gold fingers are disposed on the circuit board;

the circuit board is fixedly connected to the first end of the inversion module;

the plurality of golden fingers are arranged at one end of the circuit board, which is far away from the inversion module.

5. The inverter of claim 3, wherein the circuit board comprises a first circuit board; wherein the content of the first and second substances,

the first circuit board is provided with the direct current input golden finger and a signal interface golden finger;

the first circuit board is fixedly connected to the first end of the inversion module;

the direct current input golden finger and the signal interface golden finger are arranged at one end of the first circuit board, which is far away from the inversion module, at intervals.

6. The inverter of claim 5, wherein the circuit board further comprises a second circuit board;

the second circuit board is provided with the alternating current output golden finger;

the second circuit board is fixedly connected to the second end of the inverter module;

the alternating current output golden finger is arranged at one end, deviating from the inversion module, of the second circuit board.

7. An inverter according to any one of claims 2-6, characterized in that the second end of the inverter module is provided with a pull ring.

8. The inverter of claim 7, wherein the dc input gold finger comprises:

the first golden finger is used for being connected with the positive pole of the direct current;

and the second golden finger is used for being connected with the negative electrode of the direct current.

9. The inverter of claim 8, wherein the dc input gold finger further comprises a soft start gold finger.

10. The inverter of claim 9, wherein the ac output gold finger comprises:

the third golden finger is used for outputting a live wire of alternating current;

and the fourth golden finger is used for outputting a zero line of alternating current.

11. The inverter of claim 10, wherein the ac output gold finger further comprises a ground gold finger.

12. The inverter according to any one of claims 8-11, wherein the signal interface gold finger comprises:

and the communication parallel machine golden finger and the northbound communication golden finger.

13. The inverter of claim 12, wherein the ac parallel operation golden finger comprises:

the power frequency synchronous signal golden finger is used for frequency synchronization during alternating current parallel operation;

the carrier synchronization signal golden finger is used for controlling the switching circulation of the alternating current parallel operation;

and the AC parallel operation CAN signal golden finger is used for current sharing control during AC parallel operation.

14. The inverter of claim 13, wherein the ac parallel operation golden finger further comprises: the inversion bypass switching signal golden finger is used for realizing switching between inversion output and bypass output;

the switching speed of the gold finger of the inversion bypass switching signal is 10 MS/s.

15. The inverter of claim 14, wherein the northbound communication gold finger comprises:

and the northbound CAN communication signal golden finger is used for monitoring the communication signal.

16. The inverter according to any one of claims 13 to 15, further comprising an insert frame; wherein at least one of the inverter modules is disposed within the insert frame;

and at least part of the gold fingers in the plurality of gold fingers are electrically connected with the plug frame.

17. The inverter according to claim 16, wherein the plug frame is provided with terminals for mating with the gold finger connectors;

at least part of the golden fingers are matched and connected with the terminals so as to electrically connect the inversion module and the plug frame.

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