CN219873154U

CN219873154U - Integrated packaging structure of water cooling and capacitor and application module

Info

Publication number: CN219873154U
Application number: CN202320959376.XU
Authority: CN
Inventors: 陈尧; 任红卫
Original assignee: Leadrive Technology Shanghai Co Ltd
Current assignee: Leadrive Technology Shanghai Co Ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-10-20
Anticipated expiration: 2033-04-25

Abstract

The utility model provides an integrated packaging structure of water cooling and capacitance and an application module, which relate to the technical field of motor control and comprise the following components: a capacitor housing having a cavity with an opening for receiving a capacitor core; the water cooling plate is provided with a cooling water channel, and water inlet parts and water outlet parts which are communicated with the cooling water channel are arranged on two sides of the water cooling plate; the water cooling plate is provided with at least one limiting column facing the capacitor shell at two sides of the water inlet part and the water outlet part respectively; the capacitor shell is correspondingly provided with a limiting seat matched with the limiting column; through spacing post with spacing seat cooperation for the water-cooling plate seals the cavity of electric capacity casing, the cooling water passes through the cooling water course by the portion of intaking to the portion of going out water, and cools off the electric capacity core, is used for overcoming the not good problem of current electric capacity module radiating effect.

Description

Integrated packaging structure of water cooling and capacitor and application module

Technical Field

The utility model relates to the technical field of motor control, in particular to a water-cooling and capacitor integrated packaging structure and an application module.

Background

Along with the development of technology and the rising of environmental awareness, the conservation amount of new energy vehicles is also higher and higher. The motor controller is used as an electric energy conversion unit for connecting a battery and a motor in a new energy automobile, is a core of a motor driving and controlling system, and mainly comprises hardware parts such as an IGBT power semiconductor module and a related circuit thereof, and software parts such as a motor control algorithm and logic protection. In the running process of the motor controller, a plurality of heat dissipation sources are often contained, each part needs to be dissipated, and otherwise, the normal operation of the motor controller can be directly influenced. At present, more motor controllers dissipate heat by considering IGBT modules, but not considering heat dissipation of capacitors, or only arranging a heat conduction pad auxiliary structure outside a capacitor shell, so that the heat dissipation effect is poor.

Disclosure of Invention

In order to overcome the technical defects, the utility model aims to provide a water-cooling and capacitor integrated packaging structure and an application module, which are used for solving the problem of poor heat dissipation effect of the conventional capacitor module.

The utility model discloses an integrated packaging structure of water cooling and capacitance, which comprises:

a capacitor housing having a cavity with an opening for receiving a capacitor core;

the water cooling plate is provided with a cooling water channel, and water inlet parts and water outlet parts which are communicated with the cooling water channel are arranged on two sides of the water cooling plate;

the water cooling plate is provided with at least one limiting column facing the capacitor shell at two sides of the water inlet part and the water outlet part respectively;

the capacitor shell is correspondingly provided with a limiting seat matched with the limiting column;

through spacing post with spacing seat cooperation for the water-cooling board seals the cavity of electric capacity casing, the cooling water passes through the cooling water course by the portion of intaking to the portion of going out the water, and cools off the electric capacity core.

Preferably, when the water cooling plate is connected with the capacitor shell, the cooling water channel covers the capacitor shell, and the water inlet part and the water outlet part extend out of the capacitor shell.

Preferably, insulating paper is arranged between the capacitor core arranged in the capacitor shell and the water cooling plate.

Preferably, the limit post comprises a limit end cap and a post body for passing through the limit seat;

the limiting end cap is in threaded connection with one side of the cylinder penetrating out of the limiting seat, so that the limiting column and the limiting seat are fixed in a matched mode.

Preferably, after the capacitor shell and the water cooling plate are fixed, the capacitor shell and the water cooling plate are encapsulated.

Preferably, the capacitor shell is further provided with a supporting part extending to the side edge of the water cooling plate;

and fixing a copper bar connected with the capacitor core in the capacitor shell through the supporting part.

Preferably, the water inlet part is provided with a water inlet, the inner diameter of the cooling water channel is gradually increased from the water inlet,

the water outlet part is provided with a water outlet, and the inner diameter of the water outlet is gradually reduced from the cooling water channel to the water outlet.

The present utility model also provides an application module that,

comprising any of the above-described package structures;

the capacitor also comprises a power module assembly which is connected with one side of the water cooling plate, which is away from the capacitor shell, so as to form a structure that the water cooling plate synchronously dissipates heat of the capacitor core and the power module at two sides.

Preferably, a flaring is arranged on one side of the water cooling plate, which is away from the capacitor shell, at a position corresponding to the cooling water channel, and the flaring is sealed by adopting the power module component;

and a sealing ring matched with the power module assembly is arranged on the periphery of the flaring.

Preferably, the power module assembly is provided with a plurality of heat dissipation columns extending into the cooling water channel.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

according to the integrated packaging structure and the application module of water cooling and capacitance, the metal water cooling plate is adopted to seal the injection molded capacitance shell, so that the water cooling plate and the capacitance shell are integrated into a whole, the cavity of the capacitance shell is sealed by the water cooling plate, the sharing of the water cooling plate and the partial area of the capacitance shell is realized, cooling water can directly dissipate heat of a capacitance core through the side wall of the water cooling plate, the overall heat dissipation efficiency of the capacitance module is improved, the problem of poor heat dissipation effect of the existing capacitance module is solved, the power module assembly can be integrated, the water cooling plate is integrated between the power module assembly and the capacitance module and shared with the power module assembly and the capacitance module, and the overall heat dissipation effect of the generated application module is improved.

Drawings

FIG. 1 is a schematic diagram of a water-cooled and capacitor integrated package and an application module according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a water-cooled and capacitor integrated package and a chamber according to an embodiment of the utility model;

FIG. 3 is a schematic view of a water-cooled and capacitive integrated package and a limiting end cap according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a water-cooled and capacitor integrated package and an application module according to a second embodiment of the present utility model;

FIG. 5 is a schematic diagram of a water-cooled and capacitor integrated package structure and a sealing ring embodied in a second embodiment of an application module according to the present utility model;

fig. 6 is a schematic diagram of a heat dissipation column in a second embodiment of an integrated package structure and an application module of a water cooling and capacitance according to the present utility model.

Reference numerals:

1-a capacitor housing; 11-a capacitor core; 12-chamber; 13-a support; 14-copper bars; 2-water cooling plates; 21-a cooling water channel; 22-a water inlet part; 23-a water outlet part; 24-flaring; 3-limiting columns; 31-column; 32-limiting end caps; 4, a limiting seat; 5-insulating paper; 6-a power module assembly; 7-a sealing ring; 8-a heat radiation column.

Detailed Description

Advantages of the utility model are further illustrated in the following description, taken in conjunction with the accompanying drawings and detailed description.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present utility model, and are not of specific significance per se. Thus, "module" and "component" may be used in combination. Wherein the "capacitance" is identical to the "capacitance module" counterpart.

Embodiment one: the embodiment discloses an integrated packaging structure of water cooling and capacitance, referring to fig. 1-3, comprising:

the capacitor case 1 may be a substantially rectangular parallelepiped structure, and a cavity 12 having an opening for accommodating the capacitor core 11 is provided therein, and the capacitor case 1 may be an injection molded case or other cases made of conventional materials. The chamber 12 has an opening for placing the capacitor core 11 during installation, and it should be noted that the capacitor case 1 is not completely closed on one side unlike the prior art, and is connected to the water cooling plate 2 described below to realize heat dissipation of the capacitor.

A water cooling plate 2 provided with a cooling water channel 21, and provided with a water inlet part 22 and a water outlet part 23 which are communicated with the cooling water channel 21 at two sides; the cooling water channel 21 may be disposed along the length of the water cooling plate 2, and the cooling water channel 21 may be disposed in various arrangements, such as an integration including a plurality of water channels, or may be disposed in various shapes, including but not limited to forming a curved water channel or a bent water channel, etc., to increase the cooling water flow path and time, and may be disposed in a gradually increasing depth, etc., to increase the cooling water flow rate, etc. Specifically, as a preferable mode, when the water cooling plate 2 is connected to the capacitor case 1 such that the cooling water channel 21 completely covers the capacitor case 1, the water inlet portion 22 and the water outlet portion 23 extend out of the capacitor case 1, that is, such that the cooling water can sufficiently dissipate heat from the capacitor when passing through the cooling water channel 21.

The water cooling plate 2 is provided with at least one limiting column 3 facing the capacitor shell 1 at two sides of the water inlet part 22 and the water outlet part 23 respectively, and the limiting column 3 can be arranged outside the cooling water channel 21 so as to avoid influencing the cooling effect of the capacitor module; the capacitor shell 1 is correspondingly provided with a limiting seat 4 matched with the limiting column 3, and the positions and the numbers of the limiting column 3 and the limiting seat 4 are in one-to-one correspondence; through spacing post 3 with spacing seat 4 cooperation for water-cooling board 2 seals the cavity 12 of electric capacity casing 1, the cooling water passes through cooling water course 21 to play water department 23 from water inlet department 22, and carries out direct heat dissipation to electric capacity core 11.

In this embodiment, the water-cooling plate 2 is fixed on the capacitor shell 1 through the cooperation of the limit post 3 and the limit seat 4, and the cavity 12 with the opening is sealed on the capacitor shell 1, so that the water-cooling plate 2 forms a part of the sealed capacitor shell 1, when the capacitor core 11 is placed in the cavity 12 of the capacitor shell 1, one side of the capacitor core 11 can be directly contacted with the outer wall of the water-cooling plate 2, cooling water can directly dissipate heat of the capacitor core 11 through the water-cooling plate 2, medium in the heat transfer process is reduced, the heat dissipation effect on the capacitor is increased, the generated heat transfer only needs to be realized through one side wall of the water-cooling plate 2, the common part of the water-cooling plate 2 and the capacitor shell can be considered, and heat transfer obstruction is reduced through the increase of the common side wall, and other auxiliary components such as a heat conducting pad are not required to be arranged. Meanwhile, the cooling water channel 21 and the capacitor module are integrated integrally, so that water cooling is performed in the using process of the capacitor module, and the safety of the motor control process is improved.

In this embodiment, based on the above, the water cooling plate 2 is used as one side surface of the capacitor shell 1, and the water cooling plate 2 is made of metal, so that the heat transfer efficiency can be increased, therefore, the whole capacitor shell 1 can be regarded as a metal side surface including an original injection molding part and the connected water cooling plate 2, and the capacitor core 11 can be directly contacted with the metal side surface or only has a small interval, so that in order to increase the safety in use, the insulating paper 5 is arranged between the capacitor core 11 arranged in the capacitor shell 1 and the water cooling plate 2, thereby playing an insulating role, preventing the safety problem caused by burning through due to overlarge current, and the insulating paper 5 has smaller general thickness and does not occupy more space, and the insulating paper 5 can be also arranged at other parts between the capacitor core 11 and the capacitor shell 1, so as to improve the use safety.

The above-mentioned spacing post 3 and spacing seat 4 can cooperate to set up four sets of, around setting up in the four corners department of relative electric capacity casing 1 to increase the stability that water-cooling board 2 is connected with electric capacity casing 1, further, in a preferred embodiment, in order to reduce produce relative movement after above-mentioned spacing post 3 cooperates with spacing seat 4, set up above-mentioned spacing post 3 and include spacing end cap 32 and be used for passing spacing seat 4's cylinder 31, spacing end cap 32 threaded connection is in cylinder 31 wears out spacing seat 4 one side, makes spacing post 3 with spacing seat 4 cooperation is fixed, above-mentioned spacing end cap 32 and cylinder 31 threaded connection, thereby restrict cylinder 31 in spacing seat 4. The design of other existing spacing posts 3 and spacing seats 4, such as the design of the bent spacing posts 3, or the design of rotating nuts, can also be adopted, so that the spacing posts 3 and the spacing seats 4 are fixedly connected with the water cooling plate 2 and the capacitor shell 1.

In this embodiment, based on the setting of the above-mentioned spacing post 3 and spacing seat 4 capacitor case 1 with after the water-cooling plate 2 is fixed, based on capacitor case 1 with the embedment of water-cooling plate 2, the embedment operation can further increase the stability that water-cooling plate 2 is connected with capacitor case 1, increase the security in the use for capacitor module's embedment aluminum plate (be located capacitor case 1 and be close to the below-mentioned supporting part 13 inboard) and cooling water course 21 are integrated an organic whole, still can make partial heat have the embedment to transmit to water-cooling plate 2, further increase the heat dissipation to capacitor module. The gap between the water cooling plate 2 and the capacitor shell 1 can be reduced by filling and sealing, and specifically, filling and sealing operations can be performed by using pouring sealant and the like.

In the above embodiment, the capacitor case 1 is provided with a rectangular parallelepiped so as to cover the capacitor core 11, and the capacitor case 1 is further provided with a support portion 13 extending to the side of the water cooling plate 2; the copper bar 14 is connected and fixed with the capacitor core 11 in the capacitor shell 1 through the supporting part 13, namely, one end of the copper bar 14 is connected with the capacitor core 11, and the other end of the copper bar is fixed on the supporting part 13 through nuts and the like, so that components such as a power module and the like can be conveniently connected and used, the position of the copper bar 14 can be distributed and fixed through the supporting part 13, and therefore, the copper bar is convenient to be connected with other modules, and potential safety hazards are reduced. The supporting part 13 can be provided as a table-shaped structure extending from the outer wall of the cavity 12 to the side edge of the water cooling plate 2, and can be directly obtained when the capacitor shell 1 is injection molded, and the position/size of the supporting part 13 can be adjusted according to the position/size of the water cooling plate 2 and the position/size of the cavity 12 without being connected by a connecting piece.

As described above, the cooling water channel 21 may be configured in different shapes to increase the cooling water flowing time or flow rate, etc. to facilitate heat dissipation, and further, the water inlet portion 22 and the water outlet portion 23 may be optimized to adjust the cooling water flowing to improve the heat dissipation effect, specifically, the water inlet portion 22 is provided with a water inlet (not labeled in the figure), the water outlet portion 23 is provided with a water outlet (not labeled in the figure), and in a preferred embodiment, both the water inlet portion 22 and the water outlet portion 23 are configured in a fan shape or a triangle shape, so that the inner diameter of the cooling water channel 21 gradually increases from the water inlet to the water inlet, so that the water pressure gradually decreases during the water inlet process, so that the flow rate of the cooling water in the cooling water channel 21 is lower, and the cooling water is maintained in the cooling channel for a longer time. Meanwhile, the inner diameter from the cooling water channel 21 to the water outlet is gradually reduced, so that the water pressure at the water outlet is gradually increased, the water outlet flow rate is improved, and the cooling water receiving the heat of the capacitor module flows out from the water outlet as soon as possible. In addition, the depth and angle of the cooling water channel 21, the cooling water channel 21 and the water outlet may be changed, for example, the depth of the cooling water channel 21 is gradually increased, the depth of the cooling water channel 21 is gradually decreased, so as to change the flow of the cooling water and further increase the heat dissipation efficiency.

In this embodiment, adopt the water-cooling board 2 of metal to seal electric capacity casing 1 of moulding plastics for water-cooling board 2 and electric capacity casing 1's sharing lateral wall is different from current common direct electric capacity casing 1 outer wall of arranging water-cooling board 2 in, with the hindrance between reduction cooling water and the electric capacity core 11, improves the cooling effect to the electric capacity module, simultaneously, based on spacing post 3 and spacing seat 4's connection, make water-cooling board 2 and electric capacity casing 1 integrated an organic whole, make can directly utilize water-cooling board 2 to realize the heat dissipation to the electric capacity module under electric capacity operating condition, convenient operation and convenient to use. Besides, the water cooling plate 2 and the capacitor shell 1 can be connected and then encapsulated, so that the connection stability is further improved, and the heat dissipation efficiency is improved.

Embodiment two: the embodiment provides an application module, which comprises the packaging structure in any one of the embodiments; referring to fig. 1-6, the power module assembly 6 is further included, the power module assembly 6 may include one or more power modules, or include a frame for integrating a plurality of power modules, and the power module assembly 6 is connected to a side of the water cooling plate 2 facing away from the capacitor shell 1, so as to form a structure that the water cooling plate 2 synchronously dissipates heat from the capacitor core 11 and the power modules at two sides. That is, the power module, the water cooling plate 2 and the capacitor case 1 are respectively arranged from top to bottom, and one side of the water cooling plate 2 is shared with the capacitor case 1, so that cooling water can respectively dissipate heat of the capacitor core 11 on one side and the power module on the other side.

Based on the above, to directly contact one side of the water cooling plate 2 with the capacitor core 11 to improve heat transfer efficiency, in order to further increase the heat dissipation effect on the power module on the other side, the cooling water channel 21 on the water cooling plate 2 may be sealed by the power module assembly 6, that is, the bottom plate of the power module assembly 6 becomes a side wall of the cooling water channel 21, specifically, the water cooling plate 2 is provided with a flaring 24 on a position opposite to the capacitor shell 1 and corresponding to the cooling water channel 21, the power module assembly 6 is adopted to seal the flaring 24, as shown in fig. 5, the water cooling plate 2 includes an upper plate (not labeled in the drawing) and a lower plate, the cooling water channel 21, the water inlet 22 and the water outlet 23 are opened on the lower plate, the upper plate is covered on the lower plate, and the water inlet 22 and the water outlet 23 are sealed, and the flaring 24 is provided on the upper plate corresponding to the position of the cooling water channel 21 and is covered by the bottom plate of the power module assembly 6, at this time, the cooling water channel 21 formed by one side of the capacitor shell 1 and the bottom plate of the power module assembly 6 is visible, so that both sides of the cooling water channel 21 directly correspond to the capacitor core 11 and the heat dissipation efficiency of the power module can be improved. On this basis, in order to prevent the coolant from overflowing from the junction of the power module assembly 6, a sealing ring 7 matched with the power module assembly 6 is arranged around the flaring 24 (i.e. the cooling water channel 21), thereby increasing the safety in the water cooling process.

Based on the above embodiment, as a preferable way, the heat dissipation effect on the power module may be further increased, and a plurality of heat dissipation posts 8 extending into the cooling water channel 21 may be disposed on the power module assembly 6 (i.e., on the side facing the water cooling plate 2/on the side of the closed buckle), a plurality of heat dissipation posts 8 may be disposed, and may be uniformly distributed or unevenly distributed, and a water channel whose distribution makes the cooling water pass may be disposed, and the heat dissipation posts 8 extend into the cooling water channel 21, so as to further improve the heat dissipation effect of the application module.

In the above embodiment, the power module assembly 6, the water cooling plate 2 and the capacitor module are integrated by the application module, the water cooling plate 2 is located between the power module assembly 6 and the capacitor module and is partially shared with both the power module assembly 6 and the capacitor module, specifically, the water cooling plate 2 is connected with the capacitor module through the limit post 3 and the limit seat 4, the water cooling plate 2 seals one side surface of the capacitor module, the capacitor core 11 can be directly cooled, the power module assembly 6 is connected to the other side of the water cooling plate 2, and the bottom wall of the power module assembly 6 is adopted as the other side wall of the cooling water channel 21 through the sealing ring 7, so that the direct cooling of the power module by cooling water is realized, the capacitor core 11 and the power module are respectively cooled by the water cooling panel side, and the cooling efficiency is improved.

It should be noted that the embodiments of the present utility model are preferred and not limited in any way, and any person skilled in the art may make use of the above-disclosed technical content to change or modify the same into equivalent effective embodiments without departing from the technical scope of the present utility model, and any modification or equivalent change and modification of the above-described embodiments according to the technical substance of the present utility model still falls within the scope of the technical scope of the present utility model.

Claims

1. The utility model provides an integrated packaging structure of water-cooling and electric capacity which characterized in that includes:

2. The package structure of claim 1, wherein:

when the water cooling plate is connected with the capacitor shell, the cooling water channel covers the capacitor shell, and the water inlet part and the water outlet part extend out of the capacitor shell.

3. The package structure of claim 1, wherein:

and insulating paper is arranged between the capacitor core arranged in the capacitor shell and the water cooling plate.

4. The package structure of claim 1, wherein:

the limiting column comprises a limiting end cap and a column body which is used for penetrating through the limiting seat;

5. The package structure of claim 1, wherein:

and after the capacitor shell is fixed with the water cooling plate, filling and sealing the capacitor shell and the water cooling plate.

6. The package structure of claim 1, wherein:

the capacitor shell is also provided with a supporting part extending to the side edge of the water cooling plate;

7. The package structure of claim 1, wherein:

the water inlet part is provided with a water inlet, the inner diameter of the cooling water channel is gradually increased from the water inlet to the cooling water channel,

8. An application module, characterized in that:

comprising the package structure of any of claims 1-7;

9. The application module of claim 8, wherein:

a flaring is arranged on one side of the water cooling plate, which is away from the capacitor shell, at a position corresponding to the cooling water channel, and the flaring is sealed by adopting the power module component;

and a sealing ring matched with the power module assembly is arranged on the circumference of the flaring.

10. The application module of claim 9, wherein:

and the power module assembly is provided with a plurality of heat dissipation columns extending into the cooling water channel.