Rectification and inversion module and elevator control cabinet

Abstract

The utility model provides a rectification and inversion module and an elevator control cabinet. The rectification inversion module comprises a rectification unit which is provided with a first interface end, a second interface end and a third interface end which are sequentially arranged at intervals; the inversion unit is arranged on one side of the rectification unit, and the inversion unit is provided with a fourth interface end, a fifth interface end and a sixth interface end, and the fifth interface end and the sixth interface end are arranged opposite to the fourth interface end in the length direction of the inversion unit; the first insulating part is arranged on the rectifying unit so as to isolate the first interface end, the second interface end and the third interface end; and the second insulating part is arranged on the inversion unit so as to isolate the fifth interface end from the sixth interface end. Therefore, the probability of occurrence of electric arc, electric breakdown and other conditions of the rectification unit and the inversion unit can be reduced, and the working reliability and safety of the rectification and inversion module can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frequency converters, and particularly relates to a rectifier-inverter module and an elevator control cabinet. BACKGROUND

[0002] The elevator control cabinet is mainly used for adjusting the rotating speed and power of an elevator motor, so that the elevator runs in an optimal working state, thereby achieving the purposes of saving energy, reducing cost and improving intelligence.

[0003] The elevator control cabinet is provided with a rectifier and an inverter. In the related art, under the design requirements of miniaturization and compactness of the control cabinet, the volume and size of the control cabinet with the same power are becoming smaller and smaller, and the rectifier and the inverter are prone to arc, electrical breakdown and other problems, thereby affecting the safety and reliability of the operation of the elevator control cabinet. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a rectifier-inverter module and an elevator control cabinet, so as to improve the problem of low safety and reliability of the operation of the elevator control cabinet.

[0005] In a first aspect, the present application provides a rectifier-inverter module, comprising: a rectifier unit having a first interface end, a second interface end and a third interface end arranged in sequence and at intervals; an inverter unit arranged on one side of the rectifier unit, the inverter unit having a fourth interface end, a fifth interface end and a sixth interface end arranged opposite to the fourth interface end along the length direction of the inverter unit; a first insulating member arranged on the rectifier unit to insulate the first interface end, the second interface end and the third interface end; and a second insulating member arranged on the inverter unit to insulate the fifth interface end and the sixth interface end.

[0006] In the rectifier-inverter module of the present application, the plurality of interface ends of the rectifier unit can be electrically insulated by the first insulating member. Further, the fourth interface end, the fifth interface end and the sixth interface end of the inverter unit are located on opposite sides of the inverter unit in the length direction, and the fourth interface 121 can be electrically insulated from the fifth interface end and the sixth interface end by a larger air gap. At the same time, the fifth interface end and the sixth interface end of the inverter unit are electrically insulated by the second insulating member. Thus, the safe creepage distance is provided between any two interface ends of the rectifier unit and between any two interface ends of the inverter unit, so as to reduce the probability of arc, electrical breakdown and other conditions of the rectifier unit and the inverter unit, thereby facilitating to improve the reliability and safety of the operation of the rectifier-inverter module.

[0007] In some embodiments, the first insulation member comprises a first sub-insulation member and a second sub-insulation member, the first sub-insulation member is arranged between the first interface end and the second interface end, and the second sub-insulation member is arranged between the second interface end and the third interface end. In this way, the probability of arc, electrical breakdown and the like of the rectifying unit can be reduced, thereby facilitating the reliability and safety of the rectifying inverting module.

[0008] In some embodiments, the first insulation member comprises a bottom, a first side and a second side connected to the bottom, the bottom is provided with a through hole, the second interface end is arranged in the through hole, the first side is located between the first interface end and the second interface end, and the second side is located between the second interface end and the third interface end.

[0009] In this way, on the one hand, the probability of arc, electrical breakdown and the like of the rectifying unit can be reduced, thereby facilitating the reliability and safety of the rectifying inverting module. On the other hand, when installing the first insulation member, the second interface end only needs to be inserted into the through hole, so that the electrical insulation of the first insulation member to the three interface ends can be realized, and the installation of the first insulation member can also be realized, thereby facilitating the installation of the first insulation member. In addition, the through hole of the bottom can accurately position the first insulation member, so that the first side and the second side can be in the correct insulation position, thereby facilitating the reliability of the electrical insulation of the first insulation member to the three interface ends.

[0010] In some embodiments, the first side is provided with a first groove, and the second side is provided with a second groove opposite to the first groove. When the three interface ends of the rectifying unit are connected by the conductive member, the first groove and the second groove can be passed through by the conductive member. In this way, on the one hand, the appearance and convenience of the wiring of the conductive member can be improved. On the other hand, the reliability of the electrical insulation of the first insulation member and the convenience of the installation of the first insulation member can be improved.

[0011] In some embodiments, the rectifying inverting module further comprises a first absorption capacitor electrically connected to the rectifying unit, and at least one of the first side and the second side is provided with a first avoiding gap for avoiding the first absorption capacitor. In this way, the installation of the first absorption capacitor and the rectifying unit can be realized while ensuring the reliability of the electrical insulation of the first insulation member, thereby facilitating the space utilization and the compactness of the rectifying inverting module.

[0012] In some embodiments, the inverter unit is provided with a partition groove between the fifth interface end and the sixth interface end, and a part of the second insulating member is located in the partition groove. In this way, the second insulating member can be positioned through the partition groove, avoiding dislocation, movement and other conditions of the second insulating member, thereby improving the reliability of electrical insulation of the second insulating member.

[0013] In some embodiments, the second insulating member includes a first sub-plate and a second sub-plate connected to each other, the second sub-plate is located on the side of the inverter unit away from the rectifier unit, the second sub-plate is perpendicular to the first sub-plate, the second sub-plate is provided with a clamping groove, a part of the first sub-plate is located in the partition groove, and the first sub-plate is clamped in the clamping groove, and the second sub-plate is further provided with a plurality of first connecting holes. In this way, on the one hand, the probability of the first sub-plate from shaking, dislocating and other conditions can be reduced, thereby improving the reliability of electrical insulation of the first sub-plate. On the other hand, the second sub-plate can be fixedly installed through the first connecting holes, thereby further improving the reliability of electrical insulation of the first sub-plate.

[0014] In some embodiments, the rectifier-inverter module further includes a second absorption capacitor connected to the fifth interface end and the sixth interface end; and the first sub-plate is provided with a second avoiding gap for avoiding the second absorption capacitor. In this way, the installation of the second absorption capacitor and the inverter unit can be realized while ensuring the reliability of electrical insulation of the second insulating member, thereby improving the space utilization, and further improving the structural compactness of the rectifier-inverter module.

[0015] In some embodiments, the distance between the top of the first insulating member and the top of the rectifier unit is greater than or equal to 10 mm. In this way, the reliability and safety of the rectifier-inverter module in operation can be improved.

[0016] In some embodiments, the distance between the top of the second insulating member and the top of the inverter unit is greater than or equal to 10 mm. In this way, the reliability and safety of the rectifier-inverter module in operation can be improved.

[0017] In some embodiments, the inverter unit is provided with a plurality of second connecting holes, the plurality of second connecting holes include a first hole and a second hole located at the same side of the fifth interface end and the sixth interface end, and the fifth interface end and the sixth interface end are located between the first hole and the second hole; the rectifier-inverter module further includes a third insulating piece, the third insulating piece is sleeved on the inverter unit and is arranged at an angle with the thickness direction of the inverter unit, the fifth interface end and the sixth interface end are located at one side of the third insulating piece, and the first hole and the second hole are located at the other side of the third insulating piece. In this way, the creepage distance between the first hole and the second hole and the fifth interface end and the sixth interface end can be increased, thereby facilitating further reduction of the probability of arc, electrical breakdown and other conditions of the inverter unit, thereby facilitating further improvement of the reliability and safety of the rectifier-inverter module.

[0018] In some embodiments, the first insulating piece and the third insulating piece are insulating paper, and the second insulating piece is an insulating plate. In this way, the interface ends of the rectifier unit and the inverter unit are electrically insulated by insulating paper and epoxy plates, and the structure is simple, the material installation process is simple, and the cost is low.

[0019] In a second aspect, the application provides an elevator control cabinet including the rectifier-inverter module of the first aspect. In this way, the probability of arc, electrical breakdown and other conditions of the rectifier unit and the inverter unit can be reduced, thereby facilitating improvement of the reliability and safety of the rectifier-inverter module and the elevator control cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 A structure schematic view of the rectifier-inverter module according to an embodiment of the present application is shown from one perspective;

[0022] Figure 2 Another structure schematic view of the rectifier-inverter module according to an embodiment of the present application is shown from another perspective;

[0023] Figure 3 A structure schematic view of the rectifier unit and the first insulating piece according to an embodiment of the present application is shown;

[0024] Figure 4Another structural schematic view of the rectifier unit and the first insulating member provided by an embodiment of the present application is shown in FIG. 1C.

[0025] Figure 5 A structural schematic view of the first insulating member provided by an embodiment of the present application is shown in FIG. 2.

[0026] Figure 6 Another structural schematic view of the rectifier-inverter module provided by an embodiment of the present application is shown in FIG. 3C.

[0027] Figure 7 A structural schematic view of the inverter unit and the second insulating member provided by an embodiment of the present application is shown in FIG. 4.

[0028] Figure 8 A structural schematic view of the second insulating member provided by an embodiment of the present application is shown in FIG. 5.

[0029] Explanation of Reference Signs

[0030] 100 - rectifier-inverter module, 110 - rectifier unit, 111 - first interface end, 112 - second interface end, 113 - third interface end, 120 - inverter unit, 121 - fourth interface end, 122 - fifth interface end, 123 - sixth interface end, 124 - groove, 125 - second connecting hole, 1251 - first hole, 1252 - second hole, 130 - first insulating member, 131 - first sub-insulating member, 132 - second sub-insulating member, 133 - bottom, 1331 - through hole, 134 - first side, 1341 - first recess, 1342 - first avoiding gap, 135 - second side, 1351 - second recess, 140 - second insulating member, 141 - first sub-plate, 1411 - second avoiding gap, 142 - second sub-plate, 1421 - clamping groove, 1422 - first connecting hole, 150 - first absorbing capacitor, 160 - second absorbing capacitor, 170 - third insulating member, 200 - heat sink. DETAILED DESCRIPTION

[0031] The principles and features of the present application are described below in conjunction with the accompanying drawings, in which the examples are presented only to explain the present application and not to limit the scope of the present application.

[0032] As Figure 1 and Figure 2As shown, the embodiment of the first aspect of the present application proposes a rectification inversion module 100. The rectification inversion module 100 comprises a rectification unit 110, an inversion unit 120, a first insulation member 130 and a second insulation member 140. The rectification unit 110 has a first interface end 111, a second interface end 112 and a third interface end 113 arranged in sequence and at intervals. The inversion unit 120 is arranged on one side of the rectification unit 110. The inversion unit 120 has a fourth interface end 121, and a fifth interface end 122 and a sixth interface end 123 arranged opposite to the fourth interface end 121 along the length direction of the inversion unit 120. The first insulation member 130 is arranged on the rectification unit 110 to insulate the first interface end 111, the second interface end 112 and the third interface end 113. The second insulation member 140 is arranged on the inversion unit 120 to insulate the fifth interface end 122 and the sixth interface end 123.

[0033] The rectification inversion module 100 of the present application comprises a rectification unit 110, an inversion unit 120, a first insulation member 130 and a second insulation member 140. The rectification unit 110 is used to convert alternating current into direct current. The inversion unit 120 is used to convert direct current into alternating current with a preset frequency and a preset voltage.

[0034] The rectification unit 110 may, for example, be a rectification bridge. The number of rectification units 110 may be 1, 2, 3 or more. The plurality of rectification units 110 may be arranged at intervals. When the number of rectification units 110 is 1, it can process the conversion of single-phase alternating current input to direct current. When the number of rectification units 110 is 3, the three rectification units 110 can form a group to convert three-phase alternating current input to direct current. When the number of rectification units 110 is greater than 3, the three rectification units 110 can also be grouped. The plurality of groups can be connected in parallel, thereby realizing the rectification of alternating current with higher voltage or greater current. The number of rectification units 110 can be flexibly designed according to the condition of alternating current input.

[0035] The first interface end 111 of the rectification unit 110 can be an alternating current input end. The second interface end 112 and the third interface end 113 can be direct current positive output ends and direct current negative output ends. Of course, the three interface ends can also be flexibly defined according to actual conditions, which is not limited in the present application.

[0036] The inversion unit 120 may, for example, be an IGBT (Insulated Gate Bipolar Transistor) module. Similarly, the number of inversion units 120 may be 1, 2, 3 or more. The plurality of inversion units 120 may be arranged at intervals. The number of inversion units 120 can be flexibly designed according to the voltage and current of input direct current, the number of phases of output alternating current and other conditions.

[0037] The fourth interface terminal 121 of the inverter unit 120 can be an AC output terminal, and the fifth interface terminal 122 and the sixth interface terminal 123 can be DC positive input terminals and DC negative input terminals, respectively. It should be noted that... Figure 2 In the middle, the fourth interface terminal 121 is divided into two sub-ports. These two sub-ports are used to connect the same conductive element to output one phase of AC power. Therefore, the two sub-ports together constitute the fourth interface terminal 121.

[0038] The first insulating element 130 is disposed on the rectifier unit 110. The first insulating element 130 can isolate the first interface terminal 111, the second interface terminal 112, and the third interface terminal 113. That is, the first interface terminal 111 and the second interface terminal 112, as well as the second interface terminal 112 and the third interface terminal 113, are electrically isolated through the first insulating element 130.

[0039] The second insulating element 140 is disposed on the inverter unit 120, and the second insulating element 140 can isolate the fifth interface terminal 122 and the sixth interface terminal 123. That is, the fifth interface terminal 122 and the sixth interface terminal 123 are electrically isolated from each other by the second insulating element 140.

[0040] In related technologies, the miniaturization requirements and space constraints of elevator control cabinets have led to low reliability of electrical isolation between rectifier and inverter units. However, in the rectifier-inverter module 100 of this application, multiple interface terminals of the rectifier unit 110 can achieve electrical isolation through a first insulating member 130. Furthermore, the fourth interface terminal 121 of the inverter unit 120 is located on opposite sides of the inverter unit 120 along its length, and the fourth interface terminal 121 can achieve electrical isolation from the fifth and sixth interface terminals 122 and 123 through a large air gap. Simultaneously, the fifth and sixth interface terminals 122 and 123 of the inverter unit 120 are electrically isolated through a second insulating member 140. This ensures a safe creepage distance between any two interface terminals of the rectifier unit 110 and between any two interface terminals of the inverter unit 120, thereby reducing the probability of arcing, electrical breakdown, and other conditions in the rectifier unit 110 and inverter unit 120, and thus improving the reliability and safety of the rectifier-inverter module 100.

[0041] like Figure 3 As shown, in some embodiments, the first insulating member 130 includes a first sub-insulating member 131 and a second sub-insulating member 132. The first sub-insulating member 131 is disposed between the first interface end 111 and the second interface end 112, and the second sub-insulating member 132 is disposed between the second interface end 112 and the third interface end 113.

[0042] In the embodiment, the first insulating member 130 is composed of a first sub-insulating member 131 and a second sub-insulating member 132. The first sub-insulating member 131 can realize electrical insulation between the first interface end 111 and the second interface end 112, and the second sub-insulating member 132 can realize electrical insulation between the second interface end 112 and the third interface end 113. Thus, the probability of arc, electrical breakdown and other conditions of the rectifying unit 110 can be reduced, and the reliability and safety of the rectifying and inverting module 100 can be improved. In addition, the first sub-insulating member 131 and the second sub-insulating member 132 can be installed separately. On the one hand, the installation convenience and flexibility can be improved. On the other hand, the two sub-insulating members can be replaced separately, and the convenience of maintenance and repair can be improved. Alternatively, the first sub-insulating member 131 and the second sub-insulating member 132 can be connected with the rectifying unit 110 by clamping, bonding and other ways, which are not limited in the application.

[0043] As shown in Figure 4 and Figure 5 In some other embodiments, the first insulating member 130 includes a bottom 133, a first side 134 and a second side 135 connected with the bottom 133. The bottom 133 is provided with a through hole 1331, and the second interface end 112 is arranged in the through hole 1331. The first side 134 is located between the first interface end 111 and the second interface end 112, and the second side 135 is located between the second interface end 112 and the third interface end 113.

[0044] In the embodiment, the first insulating member 130 is composed of the bottom 133, the first side 134 and the second side 135, which can be an integrated structure. For example, the structure of the first insulating member 130 can be formed by bending a plate-shaped body.

[0045] In this way, on the one hand, the probability of arc, electrical breakdown and other conditions of the rectifying unit 110 can be reduced, and the reliability and safety of the rectifying and inverting module 100 can be improved. On the other hand, when installing the first insulating member 130, the second interface end 112 only needs to be inserted into the through hole 1331 to realize the electrical insulation of the three interface ends by the first insulating member 130, and the installation of the first insulating member 130 can also be realized. Thus, the convenience of installing the first insulating member 130 can be improved. On the third hand, the through hole 1331 of the bottom 133 can accurately position the first insulating member 130 by the second interface end 112, and the first side 134 and the second side 135 can be ensured to be in the correct insulation position. Thus, the reliability of the electrical insulation of the three interface ends by the first insulating member 130 can be improved.

[0046] In some embodiments, as shown in Figure 4 and Figure 5As shown, the first side 134 is provided with a first recess 1341, and the second side 135 is provided with a second recess 1351 opposite to the first recess 1341.

[0047] Since the first recess 1341 and the second recess 1351 are opposite, the first recess 1341 and the second recess 1351 can form a specific wiring channel. When the three interface ends of the rectifying unit 110 are connected using a conductive piece, the first recess 1341 and the second recess 1351 can be passed through by the conductive piece. In this way, on the one hand, the beauty and convenience of the wiring of the conductive piece are improved. On the other hand, when the conductive piece passes through the first recess 1341 and the second recess 1351, the conductive piece can also limit the first insulating piece 130, avoiding the dislocation and shaking of the first insulating piece 130, and at the same time, the first insulating piece 130 can be sleeved on the second interface end 112 only through the perforation 1331, without the need for additional fixing of the first insulating piece 130 and the rectifying unit 110. In this way, the reliability of the electrical insulation of the first insulating piece 130 is improved, and the convenience of the installation of the first insulating piece 130 is also improved.

[0048] It should be noted that the first recess 1341 and the second recess 1351 need to be located on the side of the first insulating piece 130 away from the interface end of the rectifying unit 110, so as to avoid affecting the insulation effect of the first recess 1341 and the second recess 1351 on the first insulating piece 130.

[0049] As shown in some embodiments, Figure 4 to Figure 6 the rectifying and inverting module 100 further comprises a first absorption capacitor 150 electrically connected with the rectifying unit 110, and at least one of the first side 134 and the second side 135 is provided with a first avoiding gap 1342 for avoiding the first absorption capacitor 150.

[0050] The first absorption capacitor 150 can reduce the peak voltage and current, and improve the stability and reliability of the output voltage of the rectifying unit 110. By providing the first avoiding gap 1342 on at least one of the first side 134 and the second side 135, the installation of the first absorption capacitor 150 and the rectifying unit 110 can be realized while ensuring the reliability of the electrical insulation of the first insulating piece 130, thereby improving the space utilization, and further improving the structural compactness of the rectifying and inverting module 100, so as to realize the miniaturization design requirement of the elevator control cabinet.

[0051] As shown in some embodiments, Figure 2 and Figure 7As shown in the drawings, in some embodiments, the inverter unit 120 is provided with a groove 124 between the fifth interface end 122 and the sixth interface end 123, and a portion of the second insulation member 140 is located in the groove 124. In this way, the second insulation member 140 can be positioned through the groove 124, avoiding dislocation, movement and other conditions of the second insulation member 140, thereby facilitating to improve the reliability of electrical insulation of the second insulation member 140.

[0052] As shown in the drawings, Figure 6 to Figure 8 in some embodiments, the second insulation member 140 includes a first sub-plate 141 and a second sub-plate 142 connected to each other, the second sub-plate 142 is located on the side of the inverter unit 120 away from the rectifier unit 110, the second sub-plate 142 is perpendicular to the first sub-plate 141, the second sub-plate 142 is provided with a clamping groove 1421, a portion of the first sub-plate 141 is located in the groove 124, and the first sub-plate 141 is clamped in the clamping groove 1421, and the second sub-plate 142 is further provided with a plurality of first connecting holes 1422.

[0053] In this embodiment, the second insulation member 140 includes the first sub-plate 141 and the second sub-plate 142, and the first sub-plate 141 is located in the groove 124 of the inverter unit 120 and the clamping groove 1421 of the second sub-plate 142 at the same time, thereby reducing the probability of the first sub-plate 141 from shaking, dislocation and other conditions, thereby facilitating to improve the reliability of electrical insulation of the first sub-plate 141. Alternatively, the first sub-plate 141 can be clamped in the clamping groove 1421 by interference fit. Alternatively, the groove 124 and the clamping groove 1421 are arranged relatively to facilitate the convenience of installation of the first sub-plate 141.

[0054] In addition, the second sub-plate 142 is further provided with a plurality of first connecting holes 1422. As shown in the drawings, Figure 1 , Figure 2 and Figure 6 the rectifier-inverter module 100 usually further includes a heat sink 200, the rectifier unit 110 and the inverter unit 120 are directly installed on the heat dissipation surface of the heat sink 200, and the second sub-plate 142 is located on the side of the inverter unit 120 away from the rectifier unit 110, and the second sub-plate 142 can also be installed on the heat dissipation surface of the heat sink 200 through the first connecting holes 1422, so that the second sub-plate 142 is also fixedly installed. In this way, the probability of the first sub-plate 141 from shaking, dislocation and other conditions can be further reduced, thereby facilitating to further improve the reliability of electrical insulation of the first sub-plate 141.

[0055] As shown in the drawings, Figure 6 to Figure 8As shown, in some embodiments, the rectification inversion module 100 further comprises a second absorption capacitor 160 connected with the fifth interface end 122 and the sixth interface end 123, and the first sub-plate 141 is provided with a second avoiding gap 1411 for avoiding the second absorption capacitor 160. The fifth interface end 122 and the sixth interface end 123 can be a direct current positive input end and a direct current negative input end on the inversion unit 120. By providing the second avoiding gap 1411 on the first sub-plate 141, the installation of the second absorption capacitor 160 and the inversion unit 120 can be realized while ensuring the electrical insulation reliability of the second insulation member 140, thereby facilitating to improve the space utilization, and further facilitating to improve the structural compactness of the rectification inversion module 100, so as to realize the miniaturization design requirement of the elevator control cabinet.

[0056] It should be noted that when the rectification unit 110 and the inversion unit 120 are multiple, each rectification unit 110 can be connected with one first absorption capacitor 150, and each inversion unit 120 can be connected with one second absorption capacitor 160.

[0057] Please refer to Figure 6 In some embodiments, the distance between the top of the first insulation member 130 and the top of the rectification unit 110 is greater than or equal to 10 mm. In this way, the first insulation member 130 can effectively enhance the creepage distance between the multiple interface ends of the rectification unit 110. Therefore, it is beneficial to improve the reliability and safety of the operation of the rectification inversion module 100.

[0058] Please refer to Figure 6 In some embodiments, the distance between the top of the second insulation member 140 and the top of the inversion unit 120 is greater than or equal to 10 mm. In this way, the second insulation member 140 can effectively enhance the creepage distance between the fifth interface end 122 and the sixth interface end 123 of the inversion unit 120, thereby facilitating to improve the reliability and safety of the operation of the rectification inversion module 100.

[0059] It should be noted that when the first insulation member 130 is provided with the first avoiding gap 1342, the top of the first insulation member 130 refers to the highest point surface of the first insulation member 130, which must not be the top of the first avoiding gap 1342. Similarly, when the second insulation member 140 is provided with the second avoiding gap 1411, the top of the second insulation member 140 refers to the highest point surface of the second insulation member 140, which must not be the top of the second avoiding gap 1411.

[0060] As Figure 6 to Figure 8As shown, in some embodiments, the inverter unit 120 is provided with a plurality of second connecting holes 125, the plurality of second connecting holes 125 including a first hole 1251 and a second hole 1252 located on the same side of the fifth interface end 122 and the sixth interface end 123, and the fifth interface end 122 and the sixth interface end 123 are located between the first hole 1251 and the second hole 1252. The rectifier-inverter module 100 further includes a third insulating piece 170, which is sleeved on the inverter unit 120 and is arranged at an angle with the thickness direction of the inverter unit 120, and the fifth interface end 122 and the sixth interface end 123 are located on one side of the third insulating piece 170, and the first hole 1251 and the second hole 1252 are located on the other side of the third insulating piece 170.

[0061] In the present embodiment, as described above, the rectifier unit 110 and the inverter unit 120 are directly mounted on the heat dissipation surface of the heat sink 200. By providing a plurality of second connecting holes 125, the inverter unit 120 can be fixed to the heat sink 200 through connecting pieces and the second connecting holes 125. It can be understood that the connecting pieces and the heat dissipation surface of the heat sink 200 are both conductive.

[0062] The plurality of second connecting holes 125 include the first hole 1251 and the second hole 1252, both of which are located on the same side of the fifth interface end 122 and the sixth interface end 123, and the third insulating piece 170 is sleeved on the inverter unit 120, so that the third insulating piece 170 can separate the first hole 1251 and the second hole 1252 from the fifth interface end 122 and the sixth interface end 123. By such arrangement, the creepage distance between the first hole 1251 and the second hole 1252 and the fifth interface end 122 and the sixth interface end 123 can be increased, thereby facilitating further reduction of the probability of arc, electrical breakdown and other conditions of the inverter unit 120, thereby facilitating further improvement of the reliability and safety of the rectifier-inverter module 100.

[0063] Alternatively, the third insulating piece 170 can be a plate structure with an opening for sleeving the inverter unit 120, and the angle between the third insulating piece 170 and the thickness direction of the inverter unit 120 can be 30°, 45°, 50°, 55°, 60°, etc., which can be flexibly set according to actual conditions.

[0064] In some embodiments, the first insulation 130 and the third insulation 170 are insulation paper, and the second insulation 140 is an insulation board, and the material of the insulation board can be, for example, epoxy resin, polyimide, glass fiber reinforced plastic, etc. In this way, the interface ends of the rectifier unit 110 and the inverter unit 120 are electrically insulated by insulation paper and epoxy boards, and the structure is simple, the material installation process is simple, and the cost is low.

[0065] Embodiments of the second aspect of the present application provide an elevator control cabinet comprising the rectifier-inverter module 100 of the first aspect. The elevator control cabinet can be, for example, an elevator control cabinet, an air conditioner control cabinet, etc.

[0066] The elevator control cabinet of the present application uses the rectifier-inverter module 100 of the first aspect, and the safe creepage distance is provided between any two interface ends of the rectifier unit 110 and any two interface ends of the inverter unit 120, so as to reduce the probability of arc, electrical breakdown, etc. of the rectifier unit 110 and the inverter unit 120, thereby facilitating to improve the reliability and safety of the rectifier-inverter module 100 and the elevator control cabinet.

[0067] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0068] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0069] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected via an intermediate medium; can be internal communication of two elements, or interaction between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0070] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0071] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0072] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A rectifier-inverter module, characterized by, The rectifier unit has a first interface end, a second interface end and a third interface end arranged in sequence and at intervals. The inverter unit is arranged on one side of the rectifier unit, and has a fourth interface end, a fifth interface end and a sixth interface end arranged opposite to the fourth interface end along the length direction of the inverter unit. The first insulation member is arranged on the rectifier unit to insulate the first interface end, the second interface end and the third interface end. The second insulation member is arranged on the inverter unit to insulate the fifth interface end and the sixth interface end. The first insulation member includes a first sub-insulation member arranged between the first interface end and the second interface end, and a second sub-insulation member arranged between the second interface end and the third interface end. The first insulation member includes a bottom portion, a first side portion and a second side portion connected to the bottom portion, and the second interface end is arranged in a through hole in the bottom portion, the first side portion is arranged between the first interface end and the second interface end, and the second side portion is arranged between the second interface end and the third interface end.

2. The rectifier-inverter module of claim 1, wherein, The first side portion is provided with a first groove, and the second side portion is provided with a second groove opposite to the first groove.

3. The rectifier-inverter module of claim 1, wherein, The rectifier-inverter module further includes a first absorption capacitor electrically connected to the rectifier unit, and at least one of the first side portion and the second side portion is provided with a first avoiding gap for avoiding the first absorption capacitor.

4. The rectifier-inverter module of claim 3, wherein, The inverter unit is provided with a partition groove between the fifth interface end and the sixth interface end, and part of the second insulation member is arranged in the partition groove. The second insulation member includes a first sub-plate and a second sub-plate connected to each other, the second sub-plate is arranged on a side of the inverter unit away from the rectifier unit, the second sub-plate is perpendicular to the first sub-plate, the second sub-plate is provided with a clamping groove, part of the first sub-plate is arranged in the partition groove, the first sub-plate is clamped in the clamping groove, and the second sub-plate is provided with a plurality of first connecting holes.

5. The rectifier-inverter module of claim 1, wherein, The rectifier-inverter module further includes a second absorption capacitor connected to the fifth interface end and the sixth interface end.

6. The rectifier-inverter module of claim 5, wherein, The first sub-plate is provided with a second avoiding gap for avoiding the second absorption capacitor.

7. The rectifier-inverter module of claim 6, wherein, The distance between the top of the first insulation member and the top of the rectifier unit is greater than or equal to 10 mm. The distance between the top of the second insulation member and the top of the inverter unit is greater than or equal to 10 mm.

8. The rectifier-inverter module of claim 1, wherein, The inverter unit is provided with a plurality of second connecting holes, the plurality of second connecting holes include a first hole and a second hole arranged on the same side of the fifth interface end and the sixth interface end, and the fifth interface end and the sixth interface end are arranged between the first hole and the second hole. ​ 9. The rectifier-inverter module of claim 1, wherein, ​ The rectifier-inverter module further comprises a third insulation piece, which is sleeved on the inverter unit and is arranged at an angle with the thickness direction of the inverter unit, the fifth interface end and the sixth interface end are located on one side of the third insulation piece, and the first hole and the second hole are located on the other side of the third insulation piece.

10. The rectifier-inverter module of claim 9, wherein, The first insulation piece and the third insulation piece are insulation paper, and the second insulation piece is an insulation plate.

11. An elevator control cabinet, characterized in that The rectifier-inverter module as claimed in any one of claims 1-10.

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