Power assembly applied to double-electric-control integrated water channel

Abstract

The utility model provides a power assembly applied to a double-electric-control integrated water channel, which comprises a shell, an electrical chamber is formed in the shell and is provided with a transverse cooling partition plate, the cooling partition plate divides the electrical chamber into an upper-layer power module mounting chamber and a lower-layer capacitor chamber, and the upper-layer power module mounting chamber and the lower-layer capacitor chamber are arranged in the shell. The capacitor core is arranged in the capacitor chamber, and the power module is arranged in the power module installation chamber. A first power module chip used for controlling the first motor and a second power module chip used for controlling the second motor are arranged left and right, and are in sealed connection with each other; and the power module is fixed on the shell, so that a cooling cavity is formed between the power module and the cooling partition plate, and the cooling cavity is used for accommodating cooling water so as to cool the power module and the capacitor core. And the fluid inlet and the fluid outlet are formed in the two ends, in the first direction, of the shell correspondingly, the fluid inlet and the fluid outlet communicate with the cooling cavity correspondingly, and cooling water enters the cooling cavity through the fluid inlet and flows out of the fluid outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of motor controllers, in particular to a power component with an integrated water channel applied to double electric control. Background Art

[0002] For the double motor controller in the prior art, refer to the appendix Figure 1 , although the power unit is directly assembled with the capacitor through the water channel, that is, both the power unit and the capacitor are arranged in the shell, two sets of IGBT modules, two sets of water channel sealing rings, and two sets of drive boards are required for the two sets of power units, and the water channels need to be separated and friction welded, so the structural installation is relatively complex and the volume is relatively large. Summary of the Invention

[0003] In order to overcome the above technical defects, the purpose of the utility model is to provide a power component with an integrated water channel applied to double electric control, which can save costs.

[0004] The utility model discloses a power component with an integrated water channel applied to double electric control, comprising: a shell, an electrical chamber is formed in the shell, a horizontal cooling partition is arranged in the electrical chamber, the cooling partition divides the electrical chamber into an upper power module installation chamber and a lower capacitor chamber, a capacitor core is arranged in the capacitor chamber, and a power module is arranged in the power module installation chamber; the power module comprises a power module group, the power module group comprises a first power module chip for controlling a first motor and a second power module chip for controlling a second motor, the first power module chip and the second power module chip are arranged in a first direction and are hermetically connected to each other; the power module is fixed on the shell, so that a cooling chamber is formed between the power module and the cooling partition, the cooling chamber is used for accommodating cooling water to cool the power module and the capacitor core; the first direction is perpendicular to the outgoing line direction of the power terminals of the power module; a fluid inlet and a fluid outlet are respectively arranged at two ends of the shell in the first direction, the fluid inlet and the fluid outlet are respectively communicated with the cooling chamber, and the cooling water enters the cooling chamber through the fluid inlet and flows out from the fluid outlet.

[0005] Preferably, both ends of the partition in the first direction are concave parts, so that the depth of the cooling chamber at both ends in the first direction is greater than that in the middle; the concave parts and the middle part are in fillet transition.

[0006] Preferably, the capacitor chamber is provided with side wall water channels at both ends along the first direction, and the side wall water channels are connected to the cooling chamber; the fluid inlet and the fluid outlet are provided at the lower part of the shell, and the fluid inlet and the fluid outlet are respectively connected to the two side wall water channels, thereby: the cooling water enters one of the two side wall water channels through the fluid inlet, then flows through the cooling chamber, the other side wall water channel, and finally flows out from the fluid outlet.

[0007] Preferably, the bottom of the shell is an open structure, and is fixedly connected to the bottom of the shell by a metal cover plate, or the bottom of the shell is potted with epoxy resin.

[0008] Preferably, a circumferential sealing groove is provided on the top edge of the shell, a sealing ring is provided in the sealing groove, and the power module and the shell are sealed by the sealing ring.

[0009] Preferably, it also includes a driving board, which includes a first driving unit for controlling the first motor and a second driving unit for controlling the second motor, the first driving unit is connected to the signal terminal of the first power module chip, and the second driving unit is connected to the signal terminal of the second power module chip.

[0010] Preferably, the upper and lower parts of the capacitor core are respectively provided with a first copper bar and a second copper bar, the first copper bar is arranged on the top surface of the capacitor and is arranged in contact with the cooling partition, and the second copper bar is arranged on the bottom surface of the capacitor; the first copper bar is the positive copper bar, and the second copper bar is the negative copper bar; or the first copper bar is the negative copper bar, and the second copper bar is the positive copper bar.

[0011] Preferably, two sides of the second copper bar are bent upwards respectively to fit the side wall water channel.

[0012] Preferably, the first power module chip and the second power module chip are an integrated plastic package; or the first power module chip and the second power module chip are connected and then sealed by a sealant; the first power module chip and the second power module chip are connected to the same heat dissipation substrate.

[0013] Compared with the prior art, the above technical solution has the following beneficial effects:

[0014] 1. Integrate the two groups of power modules in the dual-motor controller on a heat dissipation substrate. Compared with the existing technology, the middle of the two water channels can be opened to eliminate friction welding. Correspondingly, the two sealing rings are combined into one, and the two drive plates are combined into one, which can reduce the number of parts and installation steps; since the middle partition part is eliminated and the length of the substrate is reduced, the substrate material and plastic shell material are reduced, thereby reducing costs. Description of the Drawings

[0015] Figure 1 is a power component applied to an integrated water channel for double electric control in the prior art;

[0016] Figure 2 is a schematic structural diagram of the cooling chamber provided by the present utility model;

[0017] Figure 3 is a schematic overall structural diagram of a power component applied to an integrated water channel for double electric control provided by the present utility model;

[0018] Figure 4 is a cross-sectional view of the cooling chamber of a power component applied to an integrated water channel for double electric control provided by the present utility model;

[0019] Figure 5 is a schematic position diagram of the first copper bar and the capacitor provided by the present utility model;

[0020] Figure 6 is a schematic position diagram of the second copper bar and the capacitor provided by the present utility model;

[0021] Figure 7 is an exploded view of a power component applied to an integrated water channel for double electric control provided by the present utility model.

[0022] Wherein: 1 - housing, 2 - power module unit, 3 - capacitor core, 4 - sealing groove, 5 - concave part, 6 - first copper bar, 7 - second copper bar, 8 - sealing ring, 9 - drive board. Detailed Embodiments

[0023] The advantages of the present utility model are further elaborated below in conjunction with the drawings and specific embodiments.

[0024] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] The terms used in the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0026] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a mechanical connection or an electrical connection, or it may be the communication inside two elements. It may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In the subsequent description, the suffixes such as "module", "component", or "unit" used to represent elements are only for the convenience of describing the present utility model, and they have no specific meaning in themselves. Therefore, "module" and "component" can be used interchangeably.

[0030] See the attached Figure 2-7 , the present utility model discloses a power component for an integrated water channel applied to double electric control, including a capacitor component and a power module component. The capacitor component includes two capacitor groups respectively for two motors, and the power module component also includes two power module groups respectively for two motors. The two power module groups are respectively connected to their corresponding capacitors for motor control.

[0031] The housing 1, also known as the capacitor housing 1, is used to form an electrical chamber for placing capacitors. The power module of the present utility model is also disposed in the housing 1 (the accommodation chamber formed). Specifically, the electrical chamber is provided with a horizontal cooling partition, and the cooling partition divides the electrical chamber into an upper power module installation chamber and a lower capacitor chamber. The capacitor core 3 is disposed in the capacitor chamber, and the power module is disposed in the power module installation chamber.

[0032] The power module includes a power module group, and the power module group includes a first power module chip for controlling a first motor and a second power module chip for controlling a second motor. The first power module chip and the second power module chip generally include three power module units 2 (such as IGBTs) respectively for three-phase control of the motor. In the present utility model, that is, it includes six (not limited to this) power module units 2. The power module unit 2 includes an AC / DC terminal at the upper end and a signal terminal at the lower end. The power module terminal and the signal terminal are respectively used to connect the AC / DC copper bar and the PCB drive board. Therefore, the six power module units 2 are arranged in sequence from left to right, so that the AC / DC terminals of the six power module units 2 lead out in the same direction (upper end), and the signal terminals also lead out in the same direction (lower upper end). The power module is fixed on the housing 1 by fixing parts such as bolts, thereby restricting the position of the power module, so that a cooling chamber is formed between the power module and the cooling partition. The cooling chamber is used to accommodate cooling water to cool the power module above the cooling chamber and the capacitor core 3 below. It also includes a fluid inlet and a fluid outlet, which are respectively arranged along the left and right ends of the housing 1. The fluid inlet and the fluid outlet are respectively communicated with the cooling chamber. The cooling water enters the cooling chamber through the fluid inlet and flows out from the fluid outlet.

[0033] It should be noted that the first power module chip and the second power module chip need to be hermetically connected to each other to prevent the cooling water in the cooling chamber from leaking at the connection between the first power module chip and the second power module chip. Optionally, the first power module chip and the second power module chip are an integrally encapsulated component. Optionally, after the first power module chip and the second power module chip are connected, they are sealed with a sealant.

[0034] Preferably, the left and right ends of the partition are concave portions 5, so that the depths of the left and right ends of the cooling chamber are greater than the depth of the middle. And the concave portion 5 and the middle portion are in a rounded transition to reduce the flow resistance of the cooling water in the concave portion 5.

[0035] Another preferably, side wall water channels can be respectively arranged at the left and right ends of the capacitor chamber, so that side wall water channels are respectively provided on both sides of the housing 1. The side wall water channels are communicated with the cooling chamber. Specifically, the upper part of the side wall water channel is communicated with the cooling chamber. It can be understood that the cooling chamber extends from the upper part of the capacitor to the side of the capacitor, so that the side of the capacitor can be cooled, increasing the cooling area. The side wall water channels are also used for the inlet and outlet of the cooling water in the cooling chamber. Specifically, the fluid inlet and the fluid outlet provided on the housing 1 are respectively communicated with the two side wall water channels. Thus: the cooling water enters one of the two side wall water channels through the fluid inlet, then flows through the cooling chamber and the other side wall water channel, and finally flows out from the fluid outlet to realize the circulation of the cooling water.

[0036] Further, in order to integrate various structures, the present utility model arranges the fluid inlet and the fluid outlet on the left and right sides of the electrical chamber, making the overall power component more tend to be "block-shaped" and "square-shaped" rather than "strip-shaped". Moreover, the fluid inlet and the fluid outlet are arranged at the lower part of the housing 1 and on one side of the copper discharge line end, current sensor, etc., thereby integrating with components such as copper bars and current sensors, increasing the compactness.

[0037] Further, the bottom of the housing 1 is an open structure, and can be fixedly connected to the bottom of the housing 1 through a metal cover plate. The cover plate is made of metal, which is convenient for the capacitors inside the cover plate to dissipate heat. The cover plate is preferably made of aluminum alloy. Alternatively, the bottom of the housing 1 can also be potted with epoxy resin.

[0038] In a preferred embodiment, a circumferential sealing groove 4 is provided at the top edge of the housing 1, and a sealing ring is provided in the sealing groove 4 to seal the power module and the housing 1 through the sealing ring, preventing the cooling water from leaking from the connection between the power module and the housing 1.

[0039] In a preferred embodiment, the drive board 9 includes a first drive part for controlling the first motor and a second drive part for controlling the second motor. The first drive part and the second drive part of the present utility model are an integral part, which can be understood as the first drive part and the second drive part are integrated on one drive board. The first drive part is connected to the signal terminal of the first power module chip, and the second drive part is connected to the signal terminal of the second power module chip. The first power module chip and the second power module chip are connected to the same heat dissipation substrate and dissipate heat through the same heat dissipation substrate.

[0040] In a preferred embodiment, a first copper bar 6 and a second copper bar 7 are respectively provided at the upper and lower parts of the capacitor core 3. The first copper bar 6 is arranged on the top surface of the capacitor and is attached to the cooling partition plate, so that the first copper bar 6 can also dissipate heat through the cooling chamber, and at the same time, the heat conduction distance between the capacitor and the cooling chamber is reduced.

[0041] The second copper bar 7 is arranged on the bottom surface of the capacitor, that is, it is attached to the cover plate (for example), so that the second copper bar 7 can also dissipate heat through the cover plate. Here, the first copper bar 6 and the second copper bar 7 are the positive copper bar and the negative copper bar, and the specific is not limited. That is, if the first copper bar 6 is the positive copper bar, then the second copper bar 7 is the negative copper bar; if the first copper bar 6 is the negative copper bar, then the second copper bar 7 is the positive copper bar.

[0042] Further, both sides of the second copper bar 7 are bent upward to fit the side wall water channel, so as to further realize cooling and heat dissipation through the side wall water channel.

[0043] It should be noted that the embodiments of the present utility model have better implementability and do not impose any form of limitation on the present utility model. Any person skilled in the art may use the disclosed technical content to modify or transform it into equivalent effective embodiments. However, as long as it does not depart from the technical solution of the present utility model, any modification, equivalent change or modification made to the above embodiments based on the technical essence of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims

1. A power component for an integrated waterway with dual electric control, characterized in that: include: A shell, wherein an electrical chamber is formed in the shell, wherein the electrical chamber is provided with a transverse cooling baffle, wherein the cooling baffle separates the electrical chamber into an upper power module installation chamber and a lower capacitor chamber, wherein the capacitor core is arranged in the capacitor chamber, and the power module is arranged in the power module installation chamber; A power module, comprising a power module group, wherein the power module group comprises a first power module chip for controlling a first motor, and a second power module chip for controlling a second motor, wherein the first power module chip and the second power module chip are arranged in a first direction and are sealed and connected to each other; the power module is fixed to the housing so that a cooling chamber is formed between the power module and the cooling baffle, wherein the cooling chamber is used to contain cooling water to cool the power module and the capacitor core; the first direction is perpendicular to the outlet direction of the power terminal of the power module; A fluid inlet and a fluid outlet are respectively arranged along the two ends of the shell in the first direction, and the fluid inlet and the fluid outlet are respectively connected to the cooling chamber, and cooling water enters the cooling chamber through the fluid inlet and flows out from the fluid outlet.

2. The power assembly of the integrated water channel for dual electric control according to claim 1, characterized in that: The two ends of the partition along the first direction are concave portions, so that the depth of the two ends of the cooling chamber along the first direction is greater than the depth in the middle; The concave portion and the middle portion are in a rounded transition.

3. The power assembly of the integrated water channel for dual electric control according to claim 1, characterized in that: The capacitor chamber is provided with side wall water channels at both ends along the first direction, and the side wall water channels are connected to the cooling chamber; The fluid inlet and the fluid outlet are arranged at the lower part of the shell, and the fluid inlet and the fluid outlet are respectively connected to the two side wall water channels, whereby: cooling water enters one of the two side wall water channels through the fluid inlet, then flows through the cooling chamber and the other side wall water channel, and finally flows out from the fluid outlet.

4. The power assembly of the integrated water channel for dual electric control according to claim 1, characterized in that: The bottom of the shell is an open structure, and is fixedly connected to the bottom of the shell by a metal cover plate, or the bottom of the shell is potted with epoxy resin.

5. The power assembly of the integrated water channel for dual electric control according to claim 1, characterized in that: A circumferential sealing groove is provided on the top edge of the shell, a sealing ring is provided in the sealing groove, and the power module and the shell are sealed by the sealing ring.

6. The power assembly of the integrated water channel for dual electric control according to claim 1, characterized in that: It also includes a driving board, which includes a first driving unit for controlling the first motor and a second driving unit for controlling the second motor, the first driving unit is connected to the signal terminal of the first power module chip, and the second driving unit is connected to the signal terminal of the second power module chip.

7. The power assembly of the integrated water channel for dual electric control according to claim 3, characterized in that: The upper part and the lower part of the capacitor core are respectively provided with a first copper bar and a second copper bar, the first copper bar is arranged on the top surface of the capacitor and is arranged in contact with the cooling baffle, and the second copper bar is arranged on the bottom surface of the capacitor; The first copper bar is a positive copper bar, and the second copper bar is a negative copper bar; or the first copper bar is a negative copper bar, and the second copper bar is a positive copper bar.

8. The power assembly of the integrated water channel for dual electric control according to claim 7, characterized in that: Both sides of the second copper bar are bent upwards respectively to fit the side wall water channel.

9. The power assembly of the integrated water channel for dual electric control according to claim 1, characterized in that: The first power module chip and the second power module chip are an integrated plastic package; or the first power module chip and the second power module chip are connected and sealed by a sealant; The first power module chip and the second power module chip are connected to the same heat dissipation substrate.

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