Inverter, driving system and vehicle

Abstract

The invention relates to an inverter, a driving system and a vehicle, the inverter comprises an inversion shell and an electric control assembly, a mounting cavity is arranged in the inversion shell, the electric control assembly is arranged in the mounting cavity, the electric control assembly comprises a flexible plate and a hard plate, the flexible plate comprises a flexible plate body and a golden finger, the golden finger is arranged in the flexible plate body, and the golden finger is arranged in the mounting cavity. The golden finger is arranged at the end part of the flexible board body, a connector is arranged on the hard board, and the golden finger is fixedly connected with the connector in an inserting manner. The inverter is compact in structure, and the occupied space of the electric control assembly can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to an inverter, a drive system, and a vehicle. Background Art

[0002] A vehicle dual-inverter generally includes two main functions: an inversion function in which high-voltage direct current input from a battery is converted into three-phase alternating current by the dual-inverter to drive a motor to rotate; a rectification function in which a range extender drives a generator to generate three-phase alternating current, which is then converted into high-voltage direct current by the dual-inverter to charge the battery or directly supply the drive motor.

[0003] In the related art, communication between control boards inside a dual-inverter mostly adopts a "dispersed wire + board-end connector" solution. However, the position state of the wire harness of the dispersed wire in the above solution is uncontrollable, and it occupies a large amount of space.

[0004] Disclosure Content

[0005] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0006] To this end, an embodiment of the present disclosure provides an inverter, and the structure of the inverter is compact and occupies a small amount of space.

[0007] An embodiment of the present disclosure further provides a drive system.

[0008] An embodiment of the present disclosure further provides a vehicle.

[0009] The inverter according to the embodiment of the present disclosure includes: an inverter housing, an installation cavity is provided inside the inverter housing; an electronic control assembly, the electronic control assembly is arranged in the installation cavity, the electronic control assembly includes a flexible board and a rigid board, the flexible board includes a flexible board body and a gold finger, the gold finger is arranged at the end of the flexible board body, a connector is provided on the rigid board, and the gold finger is inserted and fixed with the connector.

[0010] According to the inverter of the embodiment of the present disclosure, the rigid board can be connected to the flexible board in the form of a connector and a gold finger to replace the solution of dispersed wires / ribbon cables and board-end connectors. Since the surface of the flexible board body is flatter than that of the dispersed wires and the gold finger is in a sheet structure, the wire harness connection structure of the flexible board body and the gold finger occupies less space and has a more compact structure compared with the solution of dispersed wires / ribbon cables and board-end connectors. Moreover, the flexible board is an integral structure to facilitate the regulation and fixation of the position of the flexible board. Therefore, the inverter of the embodiment of the present disclosure has a compact structure and occupies a small amount of space, which is beneficial to the fixation of the wire harness inside the inverter.

[0011] In some embodiments, the rigid board includes a first board and a second board, and the connectors are provided on both the first board and the second board. One end of the flexible board body is plugged into the connector on the first board through the gold fingers, and the other end of the flexible board body is plugged into the connector on the second board through the gold fingers.

[0012] In some embodiments, the flexible board further includes a reinforcing sheet, the reinforcing sheet is arranged on the flexible board body and adjacent to the gold fingers, and the reinforcing sheet is fixedly connected to the inverter housing.

[0013] In some embodiments, at least two first holes are provided on the reinforcing sheet, the two first holes are arranged at intervals along the width direction of the flexible board body, two rib columns corresponding to the two first holes are provided in the inverter housing, second holes are provided on the rib columns, and the electronic control assembly further includes a fastener, and the fastener passes through the first hole and the second hole.

[0014] In some embodiments, the flexible board further includes a metal shielding layer, and the metal shielding layer covers the surface of the flexible board body.

[0015] In some embodiments, the flexible board further includes an elastic buffer layer, and the buffer layer is arranged outside the metal shielding layer.

[0016] In some embodiments, the buffer layer is adhesively fixed to any one of the metal shielding layer and the inverter housing; and / or, the buffer layer is a foam.

[0017] In some embodiments, the flexible board further includes an adhesive layer, the adhesive layer is arranged outside the metal shielding layer, the flexible board is arranged adjacent to the inner side wall of the installation cavity, and the flexible board is fixed to the inner side wall of the installation cavity through the adhesive layer.

[0018] In some embodiments, the flexible board further includes a wear-resistant layer, and the wear-resistant layer is arranged outside the metal shielding layer.

[0019] A drive system according to another embodiment of the present disclosure includes: an inverter, the inverter being the inverter according to any one of the embodiments of the present disclosure; a drive motor and a speed reducer, the drive motor and the speed reducer being electrically connected to the inverter.

[0020] According to the drive system of an embodiment of the present disclosure, the rigid board can be connected to the flexible board in the form of a connector and a gold finger to replace the solution of discrete wires / ribbon cables and board-edge connectors. Since the surface of the flexible board body is flatter than that of discrete wires and the gold finger is a sheet structure, the wire harness connection structure of the flexible board body and the gold finger occupies less space and is more compact than the solution of discrete wires / ribbon cables and board-edge connectors. Moreover, the flexible board is an integral structure to facilitate the regulation and fixation of the position of the flexible board. Therefore, the inverter of the drive system of the embodiment of the present disclosure has a compact structure and occupies less space, which is beneficial to the fixation of the wire harness inside the inverter.

[0021] A vehicle according to another embodiment of the present disclosure includes the drive system described in the embodiment of the present disclosure.

[0022] According to the vehicle of an embodiment of the present disclosure, the rigid board can be connected to the flexible board in the form of a connector and a gold finger to replace the solution of discrete wires / ribbon cables and board-edge connectors. Since the surface of the flexible board body is flatter than that of discrete wires and the gold finger is a sheet structure, the wire harness connection structure of the flexible board body and the gold finger occupies less space and is more compact than the solution of discrete wires / ribbon cables and board-edge connectors. Moreover, the flexible board is an integral structure to facilitate the regulation and fixation of the position of the flexible board. Therefore, the inverter of the vehicle of the embodiment of the present disclosure has a compact structure and occupies less space, which is beneficial to the fixation of the wire harness inside the inverter. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the electric control component of the inverter according to the embodiment of the present disclosure.

[0024] Figure 2 It is a partial schematic diagram of the inverter according to the embodiment of the present disclosure.

[0025] Figure 3 It is another partial schematic diagram of the inverter according to the embodiment of the present disclosure.

[0026] Reference Signs:

[0027] 1, inverter housing; 11, installation cavity; 12, rib column;

[0028] 2, electric control component; 21, flexible board; 211, flexible board body; 212, gold finger; 213, metal shielding layer; 214, reinforcing patch; 2141, first hole; 22, rigid board; 221, first board; 222, second board; 223, connector;

[0029] 3, fastener. Detailed Description of the Embodiments

[0030] Embodiments of the present disclosure will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

[0031] Reference is made below to the attached Figures 1 to 3 Describe an inverter, a drive system, and a vehicle according to an embodiment of the present disclosure.

[0032] As Figures 1 to 3 As shown, the inverter according to an embodiment of the present disclosure includes: an inverter housing 1 and an electronic control assembly 2. An installation cavity 11 is provided in the inverter housing 1, and the electronic control assembly 2 is disposed in the installation cavity 11. The electronic control assembly 2 includes a flexible board 21 and a rigid board 22. The flexible board 21 includes a flexible board body 211 and a gold finger 212. The gold finger 212 is disposed at the end of the flexible board body 211. A connector 223 is provided on the rigid board 22, and the gold finger 212 is inserted and fixed to the connector 223.

[0033] For the inverter according to an embodiment of the present disclosure, the rigid board 22 can be connected to the flexible board 21 in the form of the connector 223 and the gold finger 212 to replace the scheme of discrete wires / ribbon cables and board-end connectors 223. Since the surface of the flexible board body 211 is flatter than that of discrete wires and the gold finger 212 is a sheet-like structure, the wire harness connection structure of the flexible board body 211 and the gold finger 212 occupies less space and has a more compact structure compared with the scheme of discrete wires / ribbon cables and board-end connectors 223. Moreover, the flexible board 21 is an integral structure, so as to adjust and fix the position of the flexible board 21. Therefore, the inverter according to an embodiment of the present disclosure has a compact structure and occupies less space, which is beneficial to fixing the wire harness in the inverter.

[0034] Optionally, the flexible board 21 further includes a metal shielding layer 213, and the metal shielding layer 213 is coated on the surface of the flexible board body 211. It can be understood that since the surface of the flexible board 21 is flatter than that of discrete wires, it is beneficial to integrate the metal shielding layer 213 to achieve the EMC shielding of the flexible board 21, which is beneficial to reducing the production cost of the inverter.

[0035] For example, the inverter can be a dual inverter for a vehicle.

[0036] It should be noted that in the related art, whether it is a discrete wire or ribbon cable scheme, not only the cost is relatively high, but also the wire harness diameter supported by the hard board-end connector adapted to the discrete wire or ribbon cable is usually relatively thick, and the volume of the wire harness assembly and the process space required for assembly are usually large, which is not conducive to reducing the power density of the inverter. In addition, since the wire harness is relatively thin, it is difficult to integrate the metal shielding layer 213 on the surface of the wire harness, that is, the EMC shielding of the wire harness body cannot be achieved, and external interference signal spikes and burrs are likely to affect the PCBA at both ends of the wire harness.

[0037] For the inverter according to the embodiments of the present disclosure, by connecting the rigid board 22 to the flexible board 21 in the form of a connector 223 and a gold finger 212, since the width of the flexible board 21 and the required assembly space are smaller, it is more conducive to the compact design and high power density design of the inverter. In addition, the solution of "flexible board body 211 + gold finger 212" can cancel half of the number of connectors 223 in the traditional wire and ribbon cable connection solutions of the inverter, greatly reducing the manufacturing cost of the inverter. The flexible board body 211 can also be compatible with the EMC metal shielding layer 213 to prevent the influence of external signal interference on the control and functions of the inverter.

[0038] At the same time, compared with the traditional wire or ribbon cable connection solution, the width of the flexible board 21 only depends on the terminal pitch of the connector 223. Taking a 50Pin FPC (flexible board 21) as an example, the connector pitch is 0.5mm, and the total width of the FPC is about 26.5mm. Whether it is the connector 223 or the width of the flexible board body 211, there is a significant reduction in volume and space compared with the traditional wire or ribbon cable solution. And the required assembly process space for the flexible board 21 is smaller, which is more conducive to reducing the volume of the inverter and improving the power density.

[0039] It can be understood that interfaces connected to the connectors 223 of the rigid board 22 are reserved at both ends of the flexible board 21 in the extending direction. The interfaces are usually nickel-plated and gold-plated on the surface (i.e., the gold fingers 212 are provided) to improve the wear resistance of the insertion of the gold fingers 212 and the internal terminal contacts of the connectors 223, ensure the contact resistance and good holding force. For the rigid board 22 and the connectors 223 at different arrangement positions, either side of the positive and negative sides of the interface can be flexibly selected for gold plating according to requirements. Compared with the traditional wire, ribbon cable and B2B connection solutions, the present disclosure can better adapt to complex and space-limited inter-board signal connections, and at the same time can increase the vibration reliability of the electrical connection between the gold fingers 212 and the connectors 223 on the rigid board 22.

[0040] For example, the metal shielding layer 213 is made of aluminum or stainless steel. Of course, a suitable shielding layer can also be selected in combination with the EMC, vibration and anti-wear requirements of the flexible board 21 in the arrangement path.

[0041] In one example, the rigid board 22 includes a first board 221 and a second board 222. Connectors 223 are provided on both the first board 221 and the second board 222. One end of the flexible board body 211 is plugged into the connector 223 of the first board 221 through the gold fingers 212, and the other end of the flexible board body 211 is plugged into the connector 223 of the second board 222 through the gold fingers 212. It can be understood that both the first board 221 and the second board 222 are rigid circuit boards. The first board 221 and the second board 222 are arranged at intervals in the installation cavity 11, and the first board 221 and the second board 222 communicate through the flexible board 21. That is, both ends of the flexible board body 211 are connected to the first board 221 and the second board 222 in the form of gold fingers 212 + FPC connectors 223, whereby the occupied space of the electronic control component 2 can be further reduced, and the production cost of the inverter can be reduced.

[0042] In other examples, the rigid board 22 may be two or more board bodies, and adjacent board bodies are connected in the form of the flexible board 21. The present disclosure does not specifically limit the number and arrangement position of the rigid board 22.

[0043] Optionally, the flexible board 21 further includes a reinforcing sheet 214. The reinforcing sheet 214 is provided on the flexible board body 211 and is arranged adjacent to the gold fingers 212. The reinforcing sheet 214 is fixedly connected to the inverter housing 1. It can be understood that the reinforcing sheet 214 can improve the structural strength of the flexible board body 211 at the position adjacent to the gold fingers 212, which is beneficial to improving the reliability of the plugging of the gold fingers 212. And since the reinforcing sheet 214 is fixedly connected to the inverter housing 1, the problem of poor contact between the gold fingers 212 and the connector 223 when the electronic control component 2 vibrates can be avoided.

[0044] For example, the reinforcing sheet 214 may be a PI reinforcing sheet, an FR4 reinforcing sheet or a metal aluminum plate reinforcing sheet. Among them, the FR4 reinforcing sheet has high structural strength and low cost, and can effectively ensure its vibration durability reliability under the vibration excitation of the range extender system. The PI reinforcing sheet has weak strength and is suitable for occasions with low vibration requirements.

[0045] In one example, at least two first holes 2141 are provided on the reinforcement sheet 214. The two first holes 2141 are arranged at intervals in the width direction of the flexible plate body 211. Two rib columns 12 corresponding to the two first holes 2141 are provided in the inverter housing 1. A second hole (not shown) is provided on the rib column 12. The electronic control assembly 2 further includes a fastener 3. The fastener 3 passes through the first hole 2141 and the second hole. For example, the fastener 3 is a screw head or a bolt. When fixing the reinforcement sheet 214, an operator can pass the fastener 3 through the first hole 2141 of the reinforcement sheet 214 and the second hole of the rib column 12 in sequence, thereby fixing the reinforcement sheet 214. Since there are at least two first holes 2141 and they are arranged on both sides in the width direction of the flexible plate body 211, the firmness of the installation of the reinforcement sheet 214 can be further improved.

[0046] In some embodiments, the flexible plate 21 further includes an elastic buffer layer (not shown). The buffer layer is provided on the outer side of the metal shielding layer 213. It can be understood that by providing a buffer layer on the outer periphery of the flexible plate 21, the vibration amplitude of the flexible plate 21 can be reduced, so that the electronic control assembly 2 of the inverter has better vibration resistance performance. For example, the buffer layer can be foam or rubber and other materials.

[0047] Optionally, the buffer layer is adhesively fixed to any one of the metal shielding layer 213 and the inverter housing 1. It can be understood that the buffer layer is fixed in the inverter housing 1 in an adhesive form, thereby further fixing the flexible plate 21. For example, one side of the foam is adhesively bonded to the metal shielding layer 213, and the other side of the foam is adhesively bonded to the inner side wall of the inverter housing 1. Thus, not only can the flexible plate 21 be fixed to improve the vibration resistance performance of the flexible plate 21, but also the production cost of the inverter can be reduced.

[0048] Optionally, the flexible plate 21 further includes an adhesive layer (not shown). The adhesive layer is provided on the outer side of the metal shielding layer 213. The flexible plate 21 is arranged adjacent to the inner side wall of the installation cavity 11, and the flexible plate 21 is fixed to the inner side wall of the installation cavity 11 through the adhesive layer. In other words, the flexible plate 21 can be directly fixed to the inner side wall of the inverter housing 1 through the adhesive layer to avoid the problem that the flexible plate 21 moves relative to the inverter housing 1 when the inverter vibrates, and it is convenient to disassemble and assemble, and the production cost is relatively low.

[0049] In another example, the flexible plate 21 further includes a wear-resistant layer (not shown). The wear-resistant layer is provided on the outer side of the metal shielding layer 213. For example, the wear-resistant layer can be a woven mesh polyester fiber structure. Since the wear-resistant layer is provided on the outer side of the metal shielding layer 213, the problem that the flexible plate 21 fails due to wear when the flexible plate 21 shakes relative to the inverter housing 1 can be avoided, which is beneficial to extending the service life of the flexible plate 21.

[0050] The drive system of another embodiment of the present disclosure includes: an inverter, a drive motor, and a reducer. The inverter is the inverter of the embodiment of the present disclosure, and the drive motor and the reducer are electrically connected to the inverter.

[0051] In the drive system according to the embodiment of the present disclosure, since the rigid board 22 is connected to the flexible board 21 in the form of the connector 223 and the gold finger 212 to replace the scheme of the discrete wires / ribbon cables and the board-end connector, the wiring connection structure of the inverter can be simplified, the occupied space of the electric control component 2 in the installation cavity 11 can be reduced, and the surface of the flexible board 21 is flatter than that of the discrete wires, which is beneficial to integrating the metal shielding layer 213 to achieve the EMC shielding of the flexible board 21. Therefore, the structure of the inverter of the drive system according to the embodiment of the present disclosure is compact, which is beneficial to reducing the occupied space of the electric control component 2, and is convenient for performing EMC shielding on the flexible board 21, which is beneficial to reducing the production cost of the inverter.

[0052] A vehicle of another embodiment of the present disclosure includes the drive system of the embodiment of the present disclosure. The technical advantages of the vehicle according to the embodiment of the present disclosure are the same as those of the drive system in the above embodiment, and will not be described herein again.

[0053] In the description of the present disclosure, 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", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present disclosure 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, and thus should not be construed as a limitation to the present disclosure.

[0054] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In this disclosure, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0056] In this disclosure, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0057] In this disclosure, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean 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 this disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0058] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting this disclosure. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of this disclosure.

Claims

1. An inverter, characterized in that, Comprising: An inverter housing (1), within which there is an installation cavity (11); An electric control component (2), which is disposed within the installation cavity (11). The electric control component (2) includes a flexible board (21) and a rigid board (22). The flexible board (21) includes a flexible board body (211) and a gold finger (212). The gold finger (212) is disposed at the end of the flexible board body (211). A connector (223) is provided on the rigid board (22), and the gold finger (212) is inserted and fixed to the connector (223).

2. The inverter according to claim 1, characterized in that, The rigid board (22) includes a first board (221) and a second board (222). Connectors (223) are provided on both the first board (221) and the second board (222). One end of the flexible board body (211) is inserted into the connector (223) on the first board (221) through the gold finger (212), and the other end of the flexible board body (211) is inserted into the connector (223) on the second board (222) through the gold finger (212).

3. The inverter according to claim 1, characterized in that, The flexible board (21) further includes a reinforcing patch (214), which is disposed on the flexible board body (211) and is arranged adjacent to the gold finger (212). The reinforcing patch (214) is fixedly connected to the inverter housing (1).

4. The inverter according to claim 3, wherein At least two first holes (2141) are provided on the reinforcing patch (214). The two first holes (2141) are arranged at intervals along the width direction of the flexible board body (211). Two rib columns (12) corresponding to the two first holes (2141) are provided within the inverter housing (1). Second holes are provided on the rib columns (12). The electric control component (2) further includes a fastener (3), and the fastener (3) passes through the first holes (2141) and the second holes.

5. The inverter according to any one of claims 1-4, characterized in that, The flexible board (21) further includes a metal shielding layer (213), which covers the surface of the flexible board body (211).

6. The inverter according to claim 5, characterized in that, The flexible board (21) further includes an elastic buffer layer, which is disposed outside the metal shielding layer (213).

7. The inverter according to claim 6, characterized in that, The buffer layer is adhesively fixed to either the metal shielding layer (213) or the inverter housing (1); and / or, the buffer layer is a foam.

8. The inverter according to claim 5, characterized in that, The flexible board (21) further includes an adhesive layer, which is disposed outside the metal shielding layer (213). The flexible board (21) is arranged adjacent to the inner side wall of the installation cavity (11), and the flexible board (21) is fixed to the inner side wall of the installation cavity (11) through the adhesive layer.

9. The inverter according to claim 5, characterized in that, The flexible board (21) further includes a wear-resistant layer, which is disposed outside the metal shielding layer (213).

10. A drive system, characterized in that, Comprising: An inverter, which is the inverter according to any one of claims 1-9; A drive motor and a reducer, where the drive motor and the reducer are electrically connected to the inverter.

11. A vehicle, characterized in that, Including the drive system according to claim 10.

Images