Inverter shell, inverter and vehicle

Abstract

The utility model discloses an inverter shell, an inverter and a vehicle, the inverter shell comprises an integrally formed shell body, the shell body comprises a bottom plate, at least one partition and at least two heat dissipation grooves, every two adjacent heat dissipation grooves are separated by the partition, the groove bottom walls of the heat dissipation grooves are arranged on the bottom plate, and the heat dissipation grooves are arranged on the bottom plate. The partition and / or the bottom plate are / is provided with a switching channel, and the switching channel is communicated with the two adjacent heat dissipation grooves. According to the inverter shell, the shell body is integrally formed, so that welding operation can be avoided, special welding equipment does not need to be used, and the manufacturing cost of the inverter shell is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an inverter housing, an inverter and a vehicle. Background Art

[0002] The inverter is used to convert the direct current of the battery into three-phase alternating current for driving and controlling the motor, and is also called a motor controller. In order to achieve cooling and heat dissipation of the power module inside the inverter, a heat dissipation channel is usually set on the inverter. At present, there are two common heat dissipation methods for inverters. The first is to integrate the heat dissipation groove into the inverter housing. After the power module is sealed and connected to the inverter housing, the notch of the heat dissipation groove is blocked by the power module, so that a heat dissipation channel is formed between the inverter housing and the power module; the second is to additionally set a heat dissipation component on the inverter housing, and the heat dissipation component is provided with a heat dissipation channel. The first heat dissipation method is widely used due to its advantages such as simple process and low cost.

[0003] For an inverter provided with at least two power modules, for example, an inverter provided with two power modules, an inverter module and a rectifier module, since the multiple power modules are independently provided, when the first heat dissipation method mentioned above is adopted, it is necessary to provide multiple heat dissipation grooves on the inverter housing, so that the heat dissipation grooves correspond to the power modules one by one, so as to realize cooling and heat dissipation of each power module. In order to realize the connection between adjacent heat dissipation grooves, in the related art, an inverter housing with a through hole is first formed, and then a cover plate is welded at one end of the through hole, and the opening at one end of the through hole is blocked by the cover plate, so that a connecting groove is formed between the cover plate and the inverter housing, and the connecting groove is connected with two adjacent heat dissipation grooves. In order to ensure the sealing of the welding point between the cover plate and the inverter housing, special welding equipment is required for welding operation, resulting in a high manufacturing cost of the inverter. In addition, the introduction of components such as the cover plate makes the production process of the inverter complicated and the production cost is high, further increasing the manufacturing cost of the inverter. Utility Model Content

[0004] To this end, the utility model provides an inverter housing to reduce the manufacturing cost of the inverter.

[0005] The inverter housing of the utility model includes an integrally formed housing body, the housing body includes a bottom plate, at least one partition and at least two heat dissipation slots, two adjacent heat dissipation slots are separated by the partition, the bottom wall of the heat dissipation slot is arranged on the bottom plate, the partition and / or the bottom plate are provided with a transfer channel, and the transfer channel connects the two adjacent heat dissipation slots.

[0006] Optionally, the slots of two adjacent heat dissipation slots face the same direction, the transfer channel is a transfer slot, the transfer slot and the heat dissipation slot have the same slot direction, the transfer slot is arranged on the bottom plate, and a part of the transfer slot is stacked with the partition.

[0007] Optionally, the bottom plate includes a protrusion, the protrusion is protruding in a direction away from the notch of the heat dissipation slot, and the adapter slot is provided on the protrusion.

[0008] Optionally, the surface of the adapter groove facing away from the groove opening is provided with at least one of a retaining wall, a reinforcing rib and a connecting column.

[0009] Optionally, the inverter housing is provided with an installation cavity, the installation cavity is provided on a side of the bottom plate facing away from the heat dissipation slot, and at least a portion of the installation cavity is provided corresponding to at least one of the heat dissipation slot and the adapter slot.

[0010] Optionally, the inverter housing further includes an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are integrally formed with the housing body, and the inlet pipe and the outlet pipe are respectively connected to the two heat dissipation grooves.

[0011] Optionally, the bottom plate includes a thickened portion, the thickness of the thickened portion is greater than the thickness of the remaining portion of the bottom plate, and the transfer channel is provided in the thickened portion.

[0012] The utility model also provides an inverter.

[0013] The inverter of the utility model comprises an inverter housing and at least two power modules, wherein the inverter housing is the inverter housing described in any one of the above items; the power modules correspond to the heat dissipation slots one by one, the power modules are sealedly connected to the inverter housing, and the corresponding notches of the heat dissipation slots are blocked.

[0014] Optionally, at least one of the power modules includes a substrate, the substrate is sealed to the inverter housing, and the substrate blocks a corresponding notch of the heat dissipation slot, and a heat dissipation column is provided on a side of the substrate facing the heat dissipation slot.

[0015] The vehicle of the utility model comprises the inverter described in any one of the above items.

[0016] The inverter housing of the utility model is provided with at least two heat dissipation grooves, and a partition is provided between two adjacent heat dissipation grooves, so that at least two power modules can be provided in one-to-one correspondence with at least two heat dissipation grooves and connected to the inverter housing, and the cooling medium in the heat dissipation grooves is used to achieve cooling and heat dissipation of the corresponding power modules. By forming the housing body in one piece, welding operations can be avoided, so that there is no need to use special welding equipment, and the manufacturing cost of the inverter housing is reduced. In addition, there is no need to introduce components such as cover plates, which simplifies the inverter housing production process, thereby reducing the production cost of the inverter housing. As a result, the manufacturing cost of the inverter housing is reduced, thereby reducing the manufacturing cost of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an inverter housing from one viewing angle of an embodiment of the utility model.

[0018] Figure 2 It is a cross-sectional view of a transfer slot of an inverter housing according to an embodiment of the utility model.

[0019] Figure 3 It is a cross-sectional view of an outlet pipe of an inverter housing according to an embodiment of the utility model.

[0020] Figure 4 It is a structural schematic diagram of an inverter housing from another perspective of an embodiment of the utility model.

[0021] Figure 5 It is a partial structural schematic diagram of an inverter according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] 10. Inverter housing;

[0024] 1. heat dissipation slot; 11. first heat dissipation slot; 12. second heat dissipation slot; 13. transfer channel; 14. mounting cavity; 141. first mounting cavity; 142. second mounting cavity; 15. outlet pipe; 101. partition; 102. bottom plate; 1021. raised portion; 103. first baffle; 104. second baffle;

[0025] 2. Import connector;

[0026] 3. Outlet connector;

[0027] 20. second substrate; 201. second heat dissipation column;

[0028] 30. Second sealing ring. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are 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 intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0030] like Figure 1 and Figure 2 As shown, the inverter housing 10 of the embodiment of the utility model includes an integrally formed housing body, which includes a bottom plate 102, at least one partition 101 and at least two heat dissipation slots 1. Two adjacent heat dissipation slots 1 are separated by the partition 101, and the bottom wall of the heat dissipation slot 1 is arranged on the bottom plate 102. The bottom plate 102 and / or the partition 101 are provided with a transfer channel 13, and the transfer channel 13 connects two adjacent heat dissipation slots 1.

[0031] Among them, the base plate 102 and / or the partition 101 are provided with a transfer channel 13, which can be understood as: the transfer channel 13 is provided as a whole on the partition 101; or, the transfer channel 13 is provided as a whole on the base plate 102; or, a part of the transfer channel 13 is provided on the partition 101, and the other part of the transfer channel 13 is provided on the base plate 102.

[0032] For example, the shell body is integrally formed by die casting, and the transfer channel 13 is formed by machining.

[0033] The inverter housing 10 of the utility model embodiment is provided with at least two heat dissipation slots 1, and a partition 101 is provided between two adjacent heat dissipation slots 1, so that at least two power modules can be provided in a one-to-one correspondence with at least two heat dissipation slots 1, and connected to the inverter housing, and the cooling medium in the heat dissipation slots 1 is used to achieve cooling and heat dissipation of the corresponding power modules. By integrally forming the housing body, welding operations can be avoided, so that there is no need to use special welding equipment, and the manufacturing cost of the inverter housing 10 is reduced. In addition, there is no need to introduce components such as cover plates, which simplifies the production process of the inverter housing 10, thereby reducing the production cost of the inverter housing 10. As a result, the manufacturing cost of the inverter housing 10 is reduced, thereby reducing the manufacturing cost of the inverter housing 10. Among them, the cooling medium can be a mixture of ethylene glycol and water.

[0034] In addition, it should be noted that when the adapter slot is formed by welding a cover plate on the inverter housing, there may be tunnel holes, incomplete welding and weak bonding defects in the weld, which may cause cracks to expand inside the weld during use of the inverter, thereby causing the heat sink of the inverter housing to leak and fail, affecting the safety of the inverter. The inverter housing 10 of the utility model embodiment can avoid the above defects of the inverter housing 10 because the housing body including at least two heat sinks 1 is integrally formed, thereby reducing the risk of leakage and failure of the heat sink and improving the safety of the inverter.

[0035] As an example, Figure 1 and Figure 2 As shown, there are two heat dissipation slots 1, and the two heat dissipation slots 1 are respectively a first heat dissipation slot 11 and a second heat dissipation slot 12. The first heat dissipation slot 11 and the second heat dissipation slot 12 are arranged along the left-right direction, and the second heat dissipation slot 12 is arranged on the right side of the first heat dissipation slot 11. Figure 1 and Figure 2As shown. When the transfer channel 13 is provided on the partition 101, the transfer channel 13 penetrates the partition 101 in the left-right direction, so that the left end of the transfer channel 13 is connected to the first heat dissipation slot 11, and the right end of the transfer channel 13 is connected to the second heat dissipation slot 12, so that the transfer channel 13 is used to achieve the connection between the first heat dissipation slot 11 and the second heat dissipation slot 12. When the transfer channel 13 is provided on the bottom plate 102, the notch of the transfer channel 13 located on the left side of the partition 101 is provided on the bottom wall of the first heat dissipation slot 11, so that the transfer channel 13 is connected to the first heat dissipation slot 11, and the notch of the transfer channel 13 located on the right side of the partition 101 is provided on the bottom wall of the second heat dissipation slot 12, so that the transfer channel 13 is connected to the second heat dissipation slot 12, so that the transfer channel 13 is used to achieve the connection between the first heat dissipation slot 11 and the second heat dissipation slot 12.

[0036] Of course, in other embodiments, the number of heat dissipation slots 1 may be three or more, in which case the number of partitions 101 and switching channels 13 are both at least two. Any two adjacent heat dissipation slots 1 are separated by a partition 101 and connected by a switching channel 13.

[0037] Alternatively, if Figure 3 As shown, the inverter housing 10 further includes an inlet pipe and an outlet pipe 15 , which are integrally formed with the housing body, and the inlet pipe and the outlet pipe 15 are respectively connected to the two heat dissipation slots 1 .

[0038] For example, when the shell body is formed, the inlet pipe and the outlet pipe 15 are formed by core pulling, the inlet pipe is communicated with the first heat dissipation groove 11 , and the outlet pipe 15 is communicated with the second heat dissipation groove 12 .

[0039] The inlet pipe and the outlet pipe 15 are integrally formed with the shell body. Compared with the inlet pipe and the outlet pipe 15 and the shell body being assembled by welding or sealing ring to realize the connection between the inlet pipe and the heat sink 1 and the outlet pipe 15 and the heat sink 1, it can not only improve the assembly efficiency of the inverter housing 10 and reduce the manufacturing cost of the inverter housing 10; but also greatly reduce the risk of cooling medium leakage in the inverter housing 10 and improve the safety of the inverter. In some embodiments, the notches of two adjacent heat sinks 1 face the same direction, the transfer channel 13 is a transfer slot, and the notches of the transfer slot and the heat sink 1 face the same direction. The transfer slot is arranged on the bottom plate 102, and a part of the transfer slot is stacked with the partition 101.

[0040] For example, Figure 1 and Figure 2As shown, the notches of the first heat dissipation slot 11 and the second heat dissipation slot 12 are oriented in the same direction. The notches of the adapter slot and the first heat dissipation slot 11 are oriented in the same direction. The adapter slot is provided on the bottom plate 102, a portion of the adapter slot is stacked with the partition 101, a portion of the notches of the adapter slot is provided on the bottom wall of the first heat dissipation slot 11, and another portion of the notches of the adapter slot is provided on the bottom wall of the second heat dissipation slot 12.

[0041] As an example, the notches of the first heat dissipation slot 11, the second heat dissipation slot 12 and the adapter slot are all facing upward, and the adapter slot is arranged at the lower side of the partition 101. Figure 1 , Figure 2 , Figure 4 and Figure 5 shown.

[0042] By setting the transfer channel as a transfer groove, and setting the transfer groove on the bottom plate 102, it is possible to avoid setting the transfer channel on the partition 101, thereby ensuring the structural strength of the partition 101, and avoiding the partition 101 from breaking during the use of the inverter housing 10, which causes the heat sink to leak and fail. In this way, the reliability of the inverter housing 10 can be improved, and the safety of the inverter can be further improved.

[0043] Of course, in other embodiments, the transfer channel may also be a transfer hole, and the transfer hole is provided on the partition 101 .

[0044] Alternatively, if Figure 2 As shown, the bottom plate 102 includes a protrusion 1021 , which is protruded in a direction facing away from the slot opening of the heat dissipation slot 1 , and the adapter slot is provided at the protrusion 1021 .

[0045] It is understandable that after the transfer channel 13 is formed on the bottom plate 102, the thickness of the bottom plate 102 will become thinner, resulting in lower strength at the transfer channel 13. By providing the protrusion 1021 and providing the transfer groove on the protrusion 1021, the flow area of ​​the transfer groove can be increased when the bottom wall of the transfer groove is thicker, thereby increasing the flow of the cooling medium between two adjacent heat dissipation grooves 1, improving the heat dissipation efficiency of the first power module and the second power module, that is, improving the heat dissipation efficiency of the inverter. Among them, the flow area of ​​the transfer groove can be understood as: the cross-sectional area of ​​the transfer groove cut by a plane perpendicular to the bottom plate 102 and parallel to the partition 101.

[0046] Optionally, the bottom plate 102 includes a thickened portion, the thickness of the thickened portion is greater than the thickness of the remaining portion of the bottom plate 102, and the transfer channel 13 is provided in the thickened portion.

[0047] It is understandable that after the transfer channel 13 is formed on the bottom plate 102, the thickness of the bottom plate 102 will become thinner, resulting in lower strength at the transfer channel 13. By providing the protrusion 1021 and arranging the transfer groove at the thickened portion, the flow area of ​​the transfer groove can be increased when the bottom wall of the transfer groove is thicker, thereby increasing the flow of the cooling medium between two adjacent heat dissipation grooves 1, improving the heat dissipation efficiency of the first power module and the second power module, that is, improving the heat dissipation efficiency of the inverter.

[0048] As an example, Figure 1 As shown, the inverter housing 10 includes a first baffle 103 and a second baffle 104. The first baffle 103 and the partition 101 are connected end to end to form an annular structure, so that the first baffle 103, the partition 101 and the bottom plate 102 form a first heat dissipation groove 11; the second baffle 104 and the partition 101 are connected end to end to form an annular structure, so that the second baffle 104, the partition 101 and the bottom plate 102 form a second heat dissipation groove 12. In fact, the first baffle 103 and the partition 101 form a surrounding plate, which together with the bottom plate 102 forms the first heat dissipation groove 11; the second baffle 104 and the partition 101 form a surrounding plate, which together with the bottom plate 102 forms the second heat dissipation groove 12. Among them, the first baffle 103, the second baffle 104 and the partition 101 are all used for sealing connection with the power module.

[0049] In the related art, when the cover plate and the inverter housing are welded to form a transfer groove, stir friction welding is usually used, which requires that the welding point between the cover plate and the inverter housing must be flat, and structures such as retaining walls, reinforcing ribs and connecting columns cannot be set at the weld, where the connecting column is used for threaded connection with the grounding bolt. This results in the busbar capacitor that needs to be separated from other components by a retaining wall being unable to be arranged at the weld, increasing the difficulty of arranging the busbar capacitor; reinforcing ribs cannot be set at the weld to improve the overall stiffness of the inverter housing, resulting in poor stiffness of the inverter; and because connecting columns cannot be set at the weld, the filter Y capacitor cannot be grounded, resulting in deterioration of the electromagnetic compatibility inside the inverter.

[0050] Optionally, at least one of a retaining wall, a reinforcing rib and a connecting column is provided on a surface of the adapter groove facing away from its groove opening.

[0051] For example, the notch of the adapter faces upward, and the lower surface of the adapter slot is provided with at least one of a retaining wall, a reinforcing rib and a connecting column.

[0052] The inverter housing 10 of the embodiment of the utility model is formed by integrally forming the housing body and then processing and forming the transfer channel 13, so that the surface of the transfer slot facing away from its slot does not need to be set as a plane, so that retaining walls, reinforcing ribs and connecting columns and other structures can be set as needed. Among them, by setting the retaining wall, the bus capacitor can be arranged at the transfer slot, reducing the difficulty of arranging the bus capacitor; by setting the reinforcing ribs, the overall rigidity of the inverter housing can be improved, thereby improving the rigidity of the inverter; by setting the connecting column, the grounding bolt is connected to the connecting column by thread, and the grounding of the filter Y capacitor can be achieved, thereby improving the electromagnetic compatibility inside the inverter.

[0053] In the related art, an inlet connecting pipe and an outlet connecting pipe are arranged inside the inverter housing, and the two ends of the inlet connecting pipe are respectively connected to the first heat sink and the inlet joint, and the two ends of the outlet connecting pipe are respectively connected to the second heat sink and the outlet joint. When in use, the cooling medium enters the inlet connecting pipe through the inlet joint, and then enters the first heat sink through the inlet connecting pipe; then enters the second heat sink through the adapter slot; then flows out of the second heat sink through the outlet connecting pipe; and finally flows out through the outlet joint. Among them, the inlet connecting pipe and the outlet connecting pipe are both independently arranged from the inverter housing. When assembling, it is necessary to ensure the sealing between the inlet connecting pipe and the first heat sink and the connection between the inlet connecting pipe and the inlet joint, and the sealing between the outlet connecting pipe and the second heat sink and the connection between the outlet connecting pipe and the outlet joint. For example, the sealing of the above-mentioned connections is ensured by welding or setting a first sealing ring, which leads to a large sealing failure problem in the above-mentioned connections, and the inverter has a large risk of cooling medium leakage.

[0054] Optionally, the inverter housing 10 includes an inlet joint 2 and an outlet joint 3 , the inlet joint 2 is sealedly connected to the inlet pipe, and the outlet joint 3 is sealedly connected to the outlet pipe 15 .

[0055] For example, the inlet joint 2 has an interference fit with the inlet pipe, and the inlet joint 2 is bonded to the inlet pipe to achieve a sealed connection between the inlet joint 2 and the inlet pipe; the outlet joint 3 has an interference fit with the outlet pipe 15, and the outlet joint 3 is bonded to the outlet pipe 15 to achieve a sealed connection between the inlet joint 2 and the inlet pipe.

[0056] By providing the inlet joint 2 and the outlet joint 3, the inlet pipe and the outlet pipe 15 are conveniently connected to the cooling medium.

[0057] Alternatively, if Figure 4 As shown, the inverter housing is provided with an installation cavity 14, which is provided on the side of the bottom plate 102 facing away from the heat sink 1. At least a portion of the installation cavity 14 corresponds to at least one of the heat sink 1 and the adapter slot. The installation cavity 14 can be provided with a busbar capacitor, an input filter, etc.

[0058] For example, Figure 4 As shown, there are two mounting cavities 14 , which are a first mounting cavity 141 and a second mounting cavity 142 . A busbar capacitor is installed in the first mounting cavity 141 , and a filter is installed in the second mounting cavity 142 .

[0059] By arranging at least a portion of the installation cavity 14 to correspond to at least one of the heat dissipation slot 1 and the adapter slot, the cooling medium flowing through the heat dissipation slot 1 and the adapter slot can take away the heat of the power module arranged in the installation cavity 14, thereby realizing cooling and heat dissipation of the power module arranged in the installation cavity 14. In this way, not only the structural compactness of the inverter is improved, but also the heat dissipation efficiency of the inverter is improved.

[0060] The manufacturing method of the inverter housing 10 of the embodiment of the utility model comprises the following steps:

[0061] An integrally formed housing body including a bottom plate 102 and at least one partition 101, wherein the housing body has at least two heat dissipation slots 1;

[0062] The transfer channel 13 is formed at the partition 101 and / or the bottom plate 102 of the housing body. The inverter housing 10 manufactured by the above manufacturing method can avoid welding operations by integrally forming the housing body and then forming the transfer channel 13, thereby eliminating the need for special welding equipment and reducing the manufacturing cost of the inverter housing 10.

[0063] Optionally, the shell body is integrally die-cast.

[0064] By integrally die-casting the shell body, on one hand, both sides of the heat sink 1 have a die-casting dense layer, which can improve the structural strength of the heat sink 1 and reduce the risk of cooling medium leakage from the heat sink 1; on the other hand, the surface of the adapter slot facing away from its slot opening can at least retain the die-casting dense layer, which improves the structural strength of the adapter slot and reduces the risk of cooling medium leakage from the adapter slot. Thus, the safety of the inverter is improved.

[0065] Optionally, the transfer channel 13 is machined using a T-shaped cutter.

[0066] The T-shaped knife can extend into the inner side of the partition 101 to process and shape the transfer channel 13 without damaging the partition 101. Therefore, it is not only convenient to process and shape the transfer channel 13, but also can effectively ensure the structural strength of the inverter housing 10.

[0067] like Figure 5As shown, the inverter of the embodiment of the utility model includes an inverter housing 10 and at least two power modules. The inverter housing 10 is the inverter housing 10 described in any of the above embodiments. The power modules correspond to the heat dissipation slots 1 one by one. The power modules are sealed and connected to the housing inverter housing 10, and the notches of the corresponding heat dissipation slots 1 are blocked.

[0068] The power module is used to block the slot corresponding to the heat dissipation slot 1, so that the power module and the inverter housing 10 form a heat dissipation channel through the heat dissipation slot 1, so that the cooling medium in the heat dissipation channel directly contacts the power module, thereby taking away the heat generated by the power module, thereby achieving cooling and heat dissipation of the power module.

[0069] Since the manufacturing cost of the inverter case 10 can be reduced, the manufacturing cost of the inverter can be reduced.

[0070] As an example, there are two power modules, which are respectively a first power module and a second power module. The first power module blocks the notch of the first heat dissipation slot 11 , and the second power module blocks the notch of the second heat dissipation slot 12 .

[0071] Optionally, at least one power module includes a substrate, the substrate is sealed and connected to the inverter housing 10, and the substrate blocks the corresponding notch of the heat dissipation slot 1. A heat dissipation column is provided on one side of the heat dissipation slot 1.

[0072] By arranging a heat dissipation column on the side of the substrate facing the heat dissipation slot 1, on the one hand, the heat dissipation column can realize the turbulence effect on the cooling medium in the heat dissipation slot 1, thereby improving the heat dissipation effect of the power module; on the other hand, the heat dissipation column can increase the heat dissipation area of ​​the power module, thereby improving the heat dissipation effect of the power module.

[0073] As an example, Figure 5 As shown, the first power module includes a first substrate, which is sealed and connected to the inverter housing 10, and the first substrate blocks the notch of the first heat dissipation slot 11. A first heat dissipation column is provided on the side of the first substrate facing the first heat dissipation slot 11. The first power module may be an inverter module with an inversion function, and the second power module may be a rectifier module with a rectification function.

[0074] For example, the first substrate is arranged on the upper side of the first heat dissipation groove 11, and the first heat dissipation column is arranged on the lower side of the first substrate. The inverter housing 10 is provided with a first sealing groove at the notch of the first heat dissipation groove 11, and a first sealing ring is arranged in the first sealing groove. The first sealing ring is clamped between the bottom wall of the first sealing groove and the first substrate, and the first substrate is connected to the inverter housing 10 by screws to realize the sealed connection between the first power module and the inverter housing 10. The first power module, the inverter housing 10 and the first sealing ring form a heat dissipation channel.

[0075] As an example, Figure 5 As shown, the second power module includes a second substrate 20, which is sealed to the inverter housing 10 and blocks the notch of the second heat dissipation slot 12. A second heat dissipation column 201 is provided on one side of the second substrate 20 facing the second heat dissipation slot 12.

[0076] For example, the second substrate 20 is arranged on the upper side of the second heat dissipation slot 12, and the second heat dissipation column 201 is arranged on the lower side of the second substrate 20. The inverter housing 10 is provided with a second sealing groove at the notch of the second heat dissipation slot 12, and a second sealing ring 30 is arranged in the second sealing groove. The second sealing ring 30 is clamped between the bottom wall of the second sealing groove and the second substrate 20, and the second substrate 20 is connected to the inverter housing 10 by screws to achieve a sealed connection between the second power module and the inverter housing 10. The second power module, the inverter housing 10 and the second sealing ring 30 form a heat dissipation channel.

[0077] By arranging a second heat dissipation column 201 on the side of the second substrate 20 facing the second heat dissipation groove 12, on the one hand, the second heat dissipation column 201 can realize the turbulence effect on the cooling medium in the second heat dissipation groove 12, thereby improving the heat dissipation effect of the second power module; on the other hand, the second heat dissipation column 201 can increase the heat dissipation area of ​​the second power module, thereby improving the heat dissipation effect of the second power module.

[0078] Optionally, the inverter is a bidirectional inverter.

[0079] Among them, the inverter includes an inverter function and a rectifier function. The inverter function can be: the high-voltage direct current input by the battery is converted into three-phase alternating current through the inverter to drive the motor to rotate; the rectifier function can be: the three-phase alternating current generated by the range extender driving motor is converted into high-voltage direct current through the inverter to charge the battery or directly supply the driving motor.

[0080] The vehicle of the embodiment of the utility model comprises the inverter described in any of the above embodiments. The vehicle may be a pure electric vehicle or a hybrid electric vehicle. The inverter housing 10 of the embodiment of the utility model.

[0081] Since the cost of the inverter is relatively low, the cost of the vehicle according to the embodiment of the utility model is also relatively low.

[0082] The utility model can solve the problems of high cost and complicated process caused by the use of welding cover plate in the related technology, which makes the heat sink integrated in the inverter housing difficult, and the difficulty of assembly layout, and the deterioration of rigidity and electromagnetic compatibility due to the limitation of welding process. Specifically, by adjusting the structure of the inverter housing 10 and canceling the welding cover plate process, the heat sink 1 can be provided with retaining walls, reinforcing ribs and connecting columns, etc., which optimizes the rigidity and electromagnetic compatibility of the inverter; the inlet pipe and outlet pipe 15 formed by core pulling are used to reduce the complexity of the forming process of the inlet pipe and outlet pipe 15, and simplify the manufacturing difficulty of the inverter housing 10; two adjacent heat sinks 1 are connected through the transfer channel 13, so that at least two heat sinks 1 are connected in series, which can increase the flow of cooling medium, improve the heat dissipation performance of the inverter, and improve the power generation and driving efficiency of the electric control assembly, and further improve the cruising range of the whole vehicle.

[0083] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An inverter housing, characterized in that: The inverter housing includes an integrally formed housing body, the housing body includes a bottom plate, at least one partition and at least two heat dissipation slots, two adjacent heat dissipation slots are separated by the partition, the bottom wall of the heat dissipation slot is arranged on the bottom plate, the partition and / or the bottom plate are provided with a transfer channel, and the transfer channel connects the two adjacent heat dissipation slots.

2. The inverter housing according to claim 1, characterized in that: The slots of two adjacent heat dissipation slots face the same direction, the transfer channel is a transfer slot, the transfer slot and the heat dissipation slot face the same direction, the transfer slot is arranged on the bottom plate, and a part of the transfer slot is stacked with the partition.

3. The inverter housing according to claim 2, characterized in that: The bottom plate comprises a raised portion, the raised portion is protruding in a direction facing away from the notch of the heat dissipation slot, and the adapter slot is arranged on the raised portion.

4. The inverter housing according to claim 2, characterized in that: The surface of the adapter groove facing away from the groove opening is provided with at least one of a retaining wall, a reinforcing rib and a connecting column.

5. The inverter housing according to claim 2, characterized in that: The inverter housing is provided with an installation cavity, which is arranged on a side of the bottom plate facing away from the heat dissipation slot, and at least a portion of the installation cavity is arranged corresponding to at least one of the heat dissipation slot and the adapter slot.

6. The inverter housing according to any one of claims 1 to 5, characterized in that: The inverter housing further comprises an inlet pipe and an outlet pipe, wherein the inlet pipe and the outlet pipe are integrally formed with the housing body, and the inlet pipe and the outlet pipe are respectively connected to the two heat dissipation grooves.

7. The inverter housing according to any one of claims 1 to 5, characterized in that: The bottom plate includes a thickened portion, the thickness of the thickened portion is greater than the thickness of the remaining portion of the bottom plate, and the transfer channel is arranged in the thickened portion.

8. An inverter, characterized in that: include: An inverter housing, wherein the inverter housing is the inverter housing according to any one of claims 1 to 7; At least two power modules, the power modules correspond to the heat dissipation slots one by one, the power modules are sealed and connected to the inverter housing, and block the corresponding notches of the heat dissipation slots.

9. The inverter according to claim 8, characterized in that: At least one of the power modules includes a substrate, which is sealed and connected to the inverter housing. The substrate blocks the corresponding notch of the heat dissipation slot, and a heat dissipation column is provided on one side of the substrate facing the heat dissipation slot.

10. A vehicle, characterized in that: Comprising the inverter described in claim 8 or 9.

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