Double-inverter six-phase output injection molding copper bar

Abstract

The utility model provides a double-inverter six-phase output injection molding copper bar which comprises a three-phase connection point of a first motor, a three-phase connection point of a second motor, a three-phase connection point of a first inverter and a three-phase connection point of a second inverter. A three-phase connection point of the first motor is connected with a three-phase connection point of the first inverter through an internal wire, and a three-phase connection point of the second motor is connected with a three-phase connection point of the second inverter through an internal wire. A three-phase connection point of the first motor and a three-phase connection point of the second motor are respectively used for connecting a three-phase input end of the first motor and a three-phase input end of the second motor; the three-phase connection point of the first inverter and the three-phase connection point of the second inverter are respectively used for connecting the three-phase output end of the first inverter and the three-phase output end of the second inverter, the injection molding copper bar reduces the number of installation points, improves the process production and assembly efficiency and the integration level of injection molding components, reduces the manufacturing cost, and improves the product quality. And the arrangement space requirement is reduced.

Description

Technical Field

[0001] This application relates to the technical field of new energy vehicle inverters, and specifically relates to a dual-inverter six-phase output injection molded copper busbar. Background Art

[0002] Currently, for the dual inverters on a vehicle, usually an injection molded copper busbar is made for the three-phase AC output of one inverter, and an injection molded copper busbar is made for the three-phase AC output of the other inverter, that is, most of the design solutions in the industry are still the integration of the three phases of U, V, and W.

[0003] However, this injection molding structure will result in poor integration, and will increase the number of installation points of the injection molded copper busbar, thereby affecting the process production and assembly efficiency. Summary of the Utility Model

[0004] In view of the above defects or deficiencies in the prior art, this application aims to provide a dual-inverter six-phase output injection molded copper busbar to solve the problems of poor integration, increased number of installation points of the injection molded copper busbar, and low process production and assembly efficiency in the prior art.

[0005] An embodiment of this application provides a dual-inverter six-phase output injection molded copper busbar, which includes the three-phase connection points of the first motor, the three-phase connection points of the second motor, the three-phase connection points of the first inverter, and the three-phase connection points of the second inverter. The three-phase connection points of the first motor and the three-phase connection points of the first inverter are connected by internal wires, and the three-phase connection points of the second motor and the three-phase connection points of the second inverter are connected by internal wires;

[0006] Among them, the three-phase connection points include a U-phase connection point, a V-phase connection point, and a W-phase connection point. The three-phase connection points of the first motor and the three-phase connection points of the second motor are respectively used to connect the three-phase input ends of the first motor and the three-phase input ends of the second motor. The three-phase connection points of the first inverter and the three-phase connection points of the second inverter are respectively used to connect the three-phase output ends of the first inverter and the three-phase output ends of the second inverter.

[0007] Optionally, the three-phase connection points are of a hole structure and the inner surface of the hole is provided with threads.

[0008] Optionally, the three-phase connection points of the first motor and the three-phase connection points of the second motor are both placed on the same horizontal line.

[0009] Optionally, the holes of the three-phase connection points of the first motor and the three-phase connection points of the second motor are horizontally oriented.

[0010] Optionally, the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are respectively placed on different horizontal lines.

[0011] Optionally, the holes at the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are vertically oriented.

[0012] Optionally, the horizontal lines where the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are located are different from the horizontal lines where the three-phase connection points of the first motor and the three-phase connection points of the second motor are located.

[0013] Optionally, the three-phase connection points of the first motor and the three-phase connection points of the second motor are both arranged outside the injection-molded copper bar, and the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are both arranged inside the injection-molded copper bar.

[0014] Optionally, the injection-molded copper bar further includes a structure to prevent bolt dropping, and the structure to prevent bolt dropping includes cavities corresponding to the three-phase connection points of the first motor and cavities corresponding to the three-phase connection points of the second motor; the cavities and the back plate of the injection-molded copper bar form a closed area.

[0015] In summary, the present application proposes an injection-molded copper bar with a six-phase output of a dual inverter. The injection-molded copper bar includes the three-phase connection points of the first motor, the three-phase connection points of the second motor, the three-phase connection points of the first inverter, and the three-phase connection points of the second inverter. Among them, the three-phase connection points of the first motor and the three-phase connection points of the first inverter are connected by internal wires, and the three-phase connection points of the second motor and the three-phase connection points of the second inverter are connected by internal wires. The three-phase connection points include a U-phase connection point, a V-phase connection point, and a W-phase connection point. The three-phase connection points of the first motor and the three-phase connection points of the second motor are respectively used to connect the three-phase input ends of the first motor and the three-phase input ends of the second motor, and the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are respectively used to connect the three-phase output ends of the first inverter and the three-phase output ends of the second inverter. The injection-molded copper bar designs the six phases of the dual inverter and the six phases of the dual motors as an injection-molded component, reducing the number of installation points, thereby improving the process production and assembly efficiency, increasing the integration degree of the entire injection-molded component, reducing the manufacturing cost, and reducing the space requirement for arranging the injection-molded copper bar. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a front view of an injection-molded copper bar with a six-phase output of a dual inverter provided by an embodiment of the present application;

[0018] Figure 2 This is a side view of a dual-inverter six-phase output injection-molded copper bar provided by an embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of an injection-molded copper bar provided by an embodiment of the present application;

[0020] Figure 4 This is a bottom view of an injection-molded copper bar provided by an embodiment of the present application. Detailed implementation manners

[0021] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for the sake of description, only the parts related to the utility model are shown in the drawings.

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0023] As mentioned in the background art, in view of the problems in the prior art, the present application proposes a dual-inverter six-phase output injection-molded copper bar, which includes the three-phase connection points of the first motor, the three-phase connection points of the second motor, the three-phase connection points of the first inverter, and the three-phase connection points of the second inverter. The three-phase connection points of the first motor are connected to the three-phase connection points of the first inverter through internal wires, and the three-phase connection points of the second motor are connected to the three-phase connection points of the second inverter through internal wires;

[0024] Among them, the three-phase connection points include the U-phase connection point, the V-phase connection point, and the W-phase connection point. The three-phase connection points of the first motor and the three-phase connection points of the second motor are respectively used to connect the three-phase input ends of the first motor and the three-phase input ends of the second motor, and the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are respectively used to connect the three-phase output ends of the first inverter and the three-phase output ends of the second inverter.

[0025] Exemplarily, Figure 1 This is a front view of a dual-inverter six-phase output injection-molded copper bar provided by an embodiment of the present application, Figure 2 This is a side view of a dual-inverter six-phase output injection-molded copper bar provided by an embodiment of the present application.

[0026] As Figure 1-2As shown in the figure, the double-inverter six-phase output injection-molded copper bar includes the three-phase connection point 1 of the first motor, the three-phase connection point 2 of the second motor, the three-phase connection point 3 of the first inverter, and the three-phase connection point 4 of the second inverter. Each three-phase connection point is composed of a U-phase connection point, a V-phase connection point, and a W-phase connection point. For example, the three-phase connection point 3 of the first inverter includes three connection points U1, V1, and W1, and the three-phase connection point 4 of the second inverter includes three connection points U3, V3, and W3.

[0027] Specifically, the three-phase input terminals of the first motor can be connected to the three-phase connection point 1 of the first motor, and the three-phase input terminals of the second motor can be connected to the three-phase connection point 2 of the second motor; the three-phase output terminals of the first inverter can be connected to the three-phase connection point 3 of the first inverter, and the three-phase output terminals of the second inverter can be connected to the three-phase connection point 4 of the second inverter.

[0028] In the embodiment of the present application, the double-inverter six-phase output injection-molded copper bar can be understood as an intermediate component for current transmission between the double inverter and the double motor. Specifically, after the first motor, the second motor, the first inverter, and the second inverter are all connected to the corresponding three-phase connection points, the three-phase alternating current output by the three-phase output terminals of the first inverter and the three-phase output terminals of the second inverter can flow into the three-phase connection point 3 of the first inverter and the three-phase connection point 4 of the second inverter. Since the three-phase connection point 3 of the first inverter is conductive with the three-phase connection point 1 of the first motor, and the three-phase connection point 4 of the second inverter is conductive with the three-phase connection point 2 of the second motor, the three-phase alternating current will further flow into the three-phase connection point 1 of the first motor and the three-phase connection point 2 of the second motor. Finally, the three-phase alternating current will flow into the three-phase input terminals of the first motor and the three-phase input terminals of the second motor.

[0029] The double-inverter six-phase output injection-molded copper bar provided by the embodiment of the present application includes the three-phase connection point of the first motor, the three-phase connection point of the second motor, the three-phase connection point of the first inverter, and the three-phase connection point of the second inverter. Among them, the three-phase connection point of the first motor is connected to the three-phase connection point of the first inverter through internal wires, and the three-phase connection point of the second motor is connected to the three-phase connection point of the second inverter through internal wires. The three-phase connection point includes a U-phase connection point, a V-phase connection point, and a W-phase connection point. The three-phase connection point of the first motor and the three-phase connection point of the second motor are respectively used to connect the three-phase input terminals of the first motor and the three-phase input terminals of the second motor, and the three-phase connection point of the first inverter and the three-phase connection point of the second inverter are respectively used to connect the three-phase output terminals of the first inverter and the three-phase output terminals of the second inverter. This injection-molded copper bar designs the six phases of the double inverter and the six phases of the double motor into an injection-molded component, reducing the number of installation points, thereby improving the process production and assembly efficiency, and also improving the integration of the entire injection-molded component.

[0030] Based on the above embodiments, optionally, the three-phase connection point is a hole structure and the inner surface of the hole is provided with threads.

[0031] Specifically, the U-phase connection point, V-phase connection point, and W-phase connection point in the three-phase connection point can all present a hole structure (i.e., a bolt hole) and the inner surface is provided with threads. The three-phase input end of the motor or the three-phase output end of the inverter can be connected to the inner threads of the three-phase connection point through bolts to achieve the connection between the two.

[0032] By setting the three-phase connection point as a hole structure and having threads on the inner surface of the hole, the connection stability between the motor and the three-phase connection point can be ensured, and the connection stability between the inverter and the three-phase connection point can be ensured, and the connection disconnection can be avoided as much as possible.

[0033] Based on the above embodiments, optionally, the three-phase connection points of the first motor and the three-phase connection points of the second motor are both placed on the same horizontal line. For example, it can be referred to Figure 1 , the three-phase connection points of the first motor and the second motor can be located on the same horizontal line. By setting the three-phase connection points of the first motor and the second motor on the same horizontal line, the three-phase connection points of the dual motors can be made more intuitive and convenient for the access of the dual motors. In the embodiments of the present application, an isolation space can also be set between the three-phase connection points of the first motor and the three-phase connection points of the second motor to isolate the three-phase connection points of the dual motors from each other and avoid incorrect access of the dual motors.

[0034] Based on the above embodiments, optionally, the holes of the three-phase connection points of the first motor and the three-phase connection points of the second motor are horizontally oriented. For example, it can be referred to Figure 1 , the holes of the three-phase connection points of the first motor and the second motor both present a horizontal orientation, that is, the holes face the user and the axis direction of the holes is horizontal. By setting the holes of the three-phase connection points of the first motor and the second motor to be horizontally oriented, it is convenient for the user to access the dual motors and ensure the convenience of the access operation.

[0035] Based on the above embodiments, optionally, the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are respectively placed on different horizontal lines. For example, it can be referred to Figure 2 , the three-phase connection point 3 of the first inverter is located on the upper horizontal line, and the three-phase connection point 4 of the second inverter is located on the lower horizontal line. The first inverter can be placed above the three-phase connection point 3 of the first inverter, and the second inverter can be placed above the three-phase connection point 4 of the second inverter.

[0036] By setting the three-phase connection points of the first inverter and the second inverter on different horizontal lines respectively, it is convenient to distinguish the dual inverters and avoid incorrect access of the dual inverters.

[0037] Based on the above embodiments, optionally, the holes of the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are vertically oriented. For example, reference can be made to Figure 1 , where the holes of the three-phase connection point 3 of the first inverter are vertically oriented, that is, the axis direction of the holes is vertical. By setting the holes of the three-phase connection points of the first inverter and the second inverter to be vertically oriented, it is convenient to distinguish them from the three-phase connection points of the dual motors, avoiding incorrect connection of the dual motors and the dual inverters.

[0038] Based on the above embodiments, optionally, the horizontal lines where the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are located are different from the horizontal lines where the three-phase connection points of the first motor and the three-phase connection points of the second motor are located. As Figure 1 - Figure 2 shown, the three-phase connection point 1 of the first motor and the three-phase connection point 2 of the second motor are located on the horizontal line near the middle and lower part, the three-phase connection point 3 of the first inverter is located on the upper horizontal line, and the three-phase connection point 4 of the second inverter is located on the lower horizontal line. By setting the three-phase connection points of the dual inverters and the three-phase connection points of the dual motors on different horizontal lines, it is convenient for users to distinguish the three-phase connection points of the dual motors and the dual inverters, avoiding connecting the motor to the three-phase connection points of the inverter and, moreover, avoiding connecting the inverter to the three-phase connection points of the motor. And this design can also ensure that the structural distribution of the entire injection-molded copper bar is uniform, facilitating processing, and avoiding the situation of current short-circuit caused by all three-phase connection points being concentrated together.

[0039] Based on the above embodiments, optionally, the three-phase connection points of the first motor and the three-phase connection points of the second motor are both arranged on the outer side of the injection-molded copper bar, and the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are both arranged on the inner side of the injection-molded copper bar. As Figure 1 - Figure 2 shown, the three-phase connection point 1 of the first motor and the three-phase connection point 2 of the second motor can be arranged on the outer side of the injection-molded copper bar, and the three-phase connection point 3 of the first inverter and the three-phase connection point 4 of the second inverter can be arranged on the inner side of the injection-molded copper bar. By arranging the three-phase connection points of the dual motors and the dual inverters on the inner and outer sides respectively, it is more convenient for users to distinguish the connection points on the motor side and the connection points on the inverter side, avoiding confusion. At the same time, it is also convenient for placing the dual inverters, and the dual inverters can be placed on the inner side, separated from the dual motors.

[0040] Based on the above embodiments, optionally, the injection-molded copper bar further includes an anti-bolt-drop structure, and the anti-bolt-drop structure includes a cavity corresponding to the three-phase connection point of the first motor and a cavity corresponding to the three-phase connection point of the second motor; the cavity and the back plate of the injection-molded copper bar form a closed area.

[0041] Among them, considering that when the dual motors are connected to the corresponding three-phase connection points, there may be a situation where bolts fall due to reasons such as vehicle vibration. In order to prevent the bolts on the dual-motor side from falling into the inner cavity of the injection-molded copper busbar and thus affecting other circuits, an anti-bolt-falling structure can also be designed for the three-phase connection points of the first motor and the three-phase connection points of the second motor.

[0042] Figure 3 FIG. is a schematic structural diagram of an injection-molded copper busbar provided by an embodiment of the present application. Among them, the anti-bolt-falling structure 5 can be constituted by cavities corresponding to the three-phase connection points of the dual motors, that is, the anti-bolt-falling structure 5 can respectively form a cavity for the three-phase connection points of the first motor and the three-phase connection points of the second motor. Refer to Figure 3 the circled part in. This cavity can form a closed area with the backplane of the injection-molded copper busbar, which is used to limit the position of the bolt when the bolt of the motor falls, so as to prevent the bolt from falling into other areas, thereby avoiding the impact of the bolt falling on other circuits.

[0043] Figure 4 FIG. is a bottom view of an injection-molded copper busbar provided by an embodiment of the present application. As Figure 4 shown, the anti-bolt-falling structure 5 can form a cavity at each connection point of the dual motors.

[0044] It should be noted that the terms used in the present application are only for describing specific embodiments and do not limit the scope of the present application. As shown in the specification and claims of the present application, unless the context clearly indicates an exception, words such as "a", "one", "a kind of" and / or "the" are not specifically singular and may also include plural. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method or device including the said element.

[0045] It should also be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0046] In this article, specific examples are used to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only for helping to understand the method and its core idea of the present application. The above are only the preferred implementation manners of the present application. It should be noted that due to the limited nature of literal expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present application, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as the protection scope of the present application.

Claims

1. A six-phase output injection-molded copper busbar for a dual inverter, characterized in that: including a three-phase connection point of a first motor, a three-phase connection point of a second motor, a three-phase connection point of a first inverter, and a three-phase connection point of a second inverter, wherein the three-phase connection point of the first motor is connected to the three-phase connection point of the first inverter via an internal wire, and the three-phase connection point of the second motor is connected to the three-phase connection point of the second inverter via an internal wire; Among them, the three-phase connection point includes a U-phase connection point, a V-phase connection point and a W-phase connection point, the three-phase connection point of the first motor and the three-phase connection point of the second motor are respectively used to connect the three-phase input end of the first motor and the three-phase input end of the second motor, and the three-phase connection point of the first inverter and the three-phase connection point of the second inverter are respectively used to connect the three-phase output end of the first inverter and the three-phase output end of the second inverter.

2. The dual inverter six-phase output injection-molded copper busbar according to claim 1, characterized in that: The three-phase connection point is a hole structure and the inner surface of the hole is provided with threads.

3. The dual inverter six-phase output injection-molded copper busbar according to claim 1, characterized in that: The three-phase connection points of the first motor and the three-phase connection points of the second motor are placed on the same horizontal line.

4. The dual inverter six-phase output injection-molded copper busbar according to claim 3, characterized in that: The holes of the three-phase connection point of the first motor and the three-phase connection point of the second motor are horizontally oriented.

5. The dual inverter six-phase output injection-molded copper busbar according to claim 4, characterized in that: The three-phase connection point of the first inverter and the three-phase connection point of the second inverter are respectively placed on different horizontal lines.

6. The dual inverter six-phase output injection-molded copper busbar according to claim 5, characterized in that: The holes of the three-phase connection point of the first inverter and the three-phase connection point of the second inverter are vertically oriented.

7. The dual inverter six-phase output injection-molded copper busbar according to claim 6, characterized in that: The horizontal lines where the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are located are different from the horizontal lines where the three-phase connection points of the first motor and the three-phase connection points of the second motor are located.

8. The dual inverter six-phase output injection-molded copper busbar according to claim 7, characterized in that: The three-phase connection points of the first motor and the three-phase connection points of the second motor are both arranged on the outside of the injection-molded copper busbar, and the three-phase connection points of the first inverter and the three-phase connection points of the second inverter are both arranged on the inside of the injection-molded copper busbar.

9. The dual inverter six-phase output injection-molded copper busbar according to claim 1, characterized in that: The injection-molded copper busbar also includes a bolt-drop prevention structure, which includes a cavity corresponding to the three-phase connection point of the first motor and a cavity corresponding to the three-phase connection point of the second motor; the cavity and the back plate of the injection-molded copper busbar form a closed area.

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