CN218920252U - Power module, converter and energy storage system - Google Patents

Abstract

The utility model provides a power module, a converter and an energy storage system, wherein the power module comprises a heat radiation plate, a heat radiation fin, a power device and a capacitor assembly, wherein the power device and the capacitor assembly are arranged on a first side of the heat radiation plate, and the heat radiation fin is arranged on a second side of the heat radiation plate, and the first side of the heat radiation plate is opposite to the second side of the heat radiation plate. According to the power module, the converter and the energy storage system, the problems that the radiating effect of the power module is poor, and sand and moisture in the air duct can influence electronic devices when the power module is installed in the air duct are solved, the radiating fins can be completely exposed, the radiating efficiency of the radiating fins is improved, and the power device and the capacitor assembly are prevented from being influenced by the sand and moisture in the air duct.

Description

Power module, converter and energy storage system

Technical Field

The utility model relates to the technical field of electronics, in particular to a power module, a converter and an energy storage system.

Background

The power module is a module formed by combining power electronic devices according to a certain function. The power module can generate heat to accumulate locally in the use process, and the service life of the power module can be influenced by the fact that the heat cannot be smoothly dissipated, and even the safety of a device using the power module can be influenced.

In the related power module, taking the power module shown in fig. 1 and 2 as an example, the power module includes a capacitor cell 10 and a heat sink 20, the heat sink 20 can dissipate heat from the capacitor cell 10, the heat sink 20 includes a housing 21, an absorption capacitor 22, an ac line 23, a laminated busbar 24, a discharge resistor 25, and a heat dissipation channel 26, the housing 21 has an opening, and the heat dissipation channel 26 is exposed through the opening to dissipate heat. In the power module shown in fig. 1 and 2, electronic devices such as an absorption capacitor 22, an ac busbar 23, a laminated busbar 24, a discharge resistor 25 and the like are all arranged on the radiator 20, and heat generated by the capacitor cell 10 is also dissipated through the radiator 20, so that the radiator 20 and each heating device of the power module responsible for heat dissipation are all arranged in a concentrated manner, which affects the overall heat dissipation effect of the module on one hand; on the other hand, when the module is installed in a duct for discharging heat, these electronic devices may be affected by dust and moisture in the duct.

Disclosure of Invention

In view of the problems that the heat dissipation effect of the related power module is poor and sand dust and water vapor in the air duct can influence electronic devices when the power module is installed in the air duct, the utility model provides the power module, the converter and the energy storage system.

The first aspect of the utility model provides a power module, which comprises a heat dissipation plate, a heat dissipation fin, a power device and a capacitor assembly, wherein the power device and the capacitor assembly are arranged on a first side of the heat dissipation plate, and the heat dissipation fin is arranged on a second side of the heat dissipation plate, and the first side of the heat dissipation plate faces away from the second side of the heat dissipation plate.

Optionally, a flange surface for sealing connection is formed on the heat dissipation plate, and the flange surface is arranged around the heat dissipation fins.

Optionally, the power device is disposed near the heat dissipation plate, and the capacitor assembly is disposed on a side of the power device away from the heat dissipation plate.

Optionally, the power module further includes a connection busbar, and the connection busbar is disposed on the first side of the heat dissipation plate.

Optionally, the connection busbar includes an ac busbar and a dc busbar, the ac busbar is disposed on a first side of the capacitor assembly, and the dc busbar is disposed on a second side of the capacitor assembly, where the first side of the capacitor assembly faces away from the second side of the capacitor assembly.

Optionally, the connection busbar comprises a busbar main body and a wiring terminal, and the wiring terminal is arranged on one side of the busbar main body far away from the heat dissipation plate.

Optionally, the power module further includes a plurality of side plates connected to the heat dissipation plate and forming a housing together with the heat dissipation plate to house the power device, the capacitor assembly and the connection busbar.

A second aspect of the utility model provides a current transformer comprising a power module according to an exemplary embodiment of the utility model.

Optionally, the converter further includes a heat dissipation air channel, the heat dissipation air channel is on the second side of the heat dissipation plate and is in sealing connection with the heat dissipation plate, the heat dissipation fins are located in the heat dissipation air channel, and the power device and the capacitor assembly are located outside the heat dissipation air channel.

A third aspect of the utility model provides an energy storage system comprising a current transformer according to an exemplary embodiment of the utility model.

According to the power module, the converter and the energy storage system, the power device and the capacitor assembly are arranged on the first side of the radiating plate, and the radiating fins are arranged on the second side of the radiating plate, so that the radiating fins and the electronic device can be separated, on one hand, the radiating fins can be completely exposed, the radiating efficiency of the radiating fins is improved, on the other hand, when the power module is installed in the air duct, only part of the radiating fins can be allowed to be arranged in the air duct, and the power device and the capacitor assembly can be arranged outside the air duct, so that the power device and the capacitor assembly are prevented from being influenced by sand dust and water vapor in the air duct.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will be apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein it is to be understood that the following drawings illustrate only certain embodiments of the utility model and are therefore not to be considered limiting of its scope. In the drawings:

fig. 1 is a schematic structure diagram of a power module according to the related art.

Fig. 2 is a schematic structural view of a radiator part in a power module according to the related art.

Fig. 3 is a perspective view of a power module according to an exemplary embodiment of the present utility model.

Fig. 4 is an exploded view of a power module according to an exemplary embodiment of the present utility model.

Fig. 5 is a circuit connection schematic of a power module according to an exemplary embodiment of the present utility model.

Reference numerals illustrate:

10-a capacitor cell; 20-a heat sink; 21-a housing; 22-absorption capacitance; 23-alternating current rows; 24-laminating busbar; 25-discharge resistance; 26-heat dissipation channels; 110-a heat dissipation plate; 120-radiating fins; 130-power devices; 140-a capacitive component; 150-alternating current busbar; 151-alternating current busbar body; 152-alternating current busbar connection terminals; 160-direct current busbar; 161-direct current copper bars; 162-midpoint copper bars; 170-side plates; 200-a heat dissipation air duct.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example and is not limited to those set forth herein, but may be altered as will be apparent after an understanding of the disclosure of the utility model, except for operations that must occur in a specific order. Furthermore, descriptions of features known in the art may be omitted for clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided to illustrate only some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after an understanding of the present disclosure.

As used herein, the term "and/or" includes any one of the listed items associated as well as any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, first component, first region, first layer, or first portion referred to in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

In the description, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" or "coupled to" the other element, it can be directly "on" the other element, be directly "connected to" or be "coupled to" the other element, or one or more other elements intervening elements may be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" or "directly coupled to" another element, there may be no other element intervening elements present.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, amounts, operations, components, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, amounts, operations, components, elements, and/or combinations thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. Unless explicitly so defined herein, terms (such as those defined in a general dictionary) should be construed to have meanings consistent with their meanings in the context of the relevant art and the present utility model and should not be interpreted idealized or overly formal.

In addition, in the description of the examples, when it is considered that detailed descriptions of well-known related structures or functions will cause ambiguous explanations of the present utility model, such detailed descriptions will be omitted.

In order to enable one skilled in the art to utilize the teachings of the present utility model, the following exemplary embodiments are presented in terms of particular application scenarios, particular system, device and component parameters and particular manner of connection. However, it will be apparent to those having ordinary skill in the art that these embodiments are merely examples, and that the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the utility model.

Further, in order to clearly show the relationship between components or internal configurations, etc., in the drawings, other portions of the energy storage system, for example, and components and structures, etc., that are not related to the described exemplary embodiments are omitted.

In view of the above, exemplary embodiments of the present utility model provide a power module, a converter, and an energy storage system to solve or mitigate at least one of the above problems.

According to a first aspect of the present utility model, there is provided a power module, and an exemplary structure of the power module of an exemplary embodiment of the present utility model will be described below with reference to the accompanying drawings.

Fig. 3 is a perspective view of a power module according to an exemplary embodiment of the present utility model. Fig. 4 is an exploded view of a power module according to an exemplary embodiment of the present utility model.

As shown in fig. 3 and 4, the power module may include a heat dissipation plate 110, a heat dissipation fin 120, a power device 130, and a capacitor assembly 140. The power device 130 and the capacitor assembly 140 may be disposed on a first side of the heat dissipation plate 110, and the heat dissipation fin 120 may be disposed on a second side of the heat dissipation plate 110, wherein the first side of the heat dissipation plate 110 faces away from the second side of the heat dissipation plate 110. Through setting up electronic device and radiating fin 120 respectively on the both sides of the back of heating panel 110, can separate electronic device and radiating fin, be in different spaces to on the one hand, can expose radiating fin completely, improve radiating fin's radiating efficiency, on the other hand, when installing the wind channel with power module, can allow only to arrange radiating fin part in the wind channel in, and can set up power device and capacitor assembly outside the wind channel, avoid power device and capacitor assembly to receive the inside sand and dust and the influence of steam in wind channel.

As an example, the power device 130 may be, but is not limited to, an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT). The capacitive component 140 may be, but is not limited to, a capacitive pool.

The heat dissipation fins 120 (may also be referred to as "heat sink ventilation fins") may be, for example, metal materials, and may be integrally formed with the heat dissipation plate 110, or may be separately formed and then connected together by, for example, welding, and the heat dissipation plate 110 may serve as a mounting surface of the power device 130, and may form a heat source surface for conducting heat of the power device 130 mounted thereon to the heat dissipation fins 120. The heat radiating fins 120 may serve as heat radiating surfaces to radiate heat from the heat radiating plate 110. Here, the heat dissipation fin 120 may be a phase change heat sink, a dense tooth profile heat sink, a relieved tooth heat sink, etc., and the heat dissipation fin 120 may increase a contact surface between the heat sink and air, and perform heat exchange with air rapidly, thereby increasing a heat dissipation area and improving a heat dissipation effect.

The heat sink plate 110 may further have a flange surface for sealing connection, and the flange surface is provided around the heat sink fins 120. Although not shown in fig. 3 and 4, a flange surface may be provided at the second side of the heat dissipation plate 110 and may be provided around the heat dissipation fins 120. By providing a flange around the heat dissipation fins 120, when the power module is mounted to the heat dissipation air duct 200, the heat dissipation air duct 200 may be connected with the heat dissipation plate 110 through the flange surface at the second side of the heat dissipation plate 110 in a sealing manner, so that the heat dissipation fins 120 are located in the heat dissipation air duct, and the power device 130 and the capacitor assembly 140 are located outside the heat dissipation air duct 200.

In an exemplary embodiment according to the present utility model, the power device 130 may be disposed near the heat dissipation plate 110, and the capacitor assembly 140 may be disposed at a side of the power device 130 remote from the heat dissipation plate 110. Specifically, as shown in fig. 4, the power device 130 may be disposed closer to the heat sink 110 than the capacitor assembly 140, so that, on the one hand, heat dissipation of the power device 130 may be facilitated, and, on the other hand, the disposition of the capacitor assembly 140 away from the heat sink 110 may be advantageous in connection with the layout of the busbar as will be described below.

The power module may further include a connection busbar, and the connection busbar may be disposed on the first side of the heat dissipation plate. In this way, the power device 130, the capacitor assembly 140 and the connection busbar are arranged on the same side, so that circuit wiring and subsequent maintenance on the power module can be facilitated. The connection busbar may be, for example, a connection copper or aluminum busbar for a circuit connection.

As an example, the connection busbar may include an ac busbar 150 and a dc busbar 160, the ac busbar 150 may be disposed on a first side of the capacitive assembly 140, and the dc busbar 160 may be disposed on a second side of the capacitive assembly 140, wherein the first side of the capacitive assembly 140 faces away from the second side of the capacitive assembly 140. The AC busbar 150 may be used for AC conduction, for example, may be connected to an AC (AC) inlet, and the AC busbar 150 may be, for example, but not limited to, an AC copper busbar. The DC bus 160 may be used for DC conduction, for example, may be connected to a Direct Current (DC) inlet, as shown in fig. 4, and the DC bus 160 may include a DC copper bar 161 and a midpoint copper bar 162. In this way, the ac busbar 150 and the dc busbar 160 are disposed on opposite sides of the capacitor assembly 140, so that the power module layout is optimized, the modules are more compact, and the ac/dc interference is avoided.

Each of the connection busbar including the ac busbar 150 and the dc busbar 160 may include a busbar body and a connection terminal, and the connection terminal may be disposed at a side of the busbar body away from the heat dissipation plate. For example, in fig. 4, taking the ac busbar 150 as an example, the ac busbar 150 includes an ac busbar body 151 and an ac busbar connection terminal 152, and the ac busbar connection terminal 152 may be disposed on a side of the ac busbar body 151 away from the heat dissipation plate 110. In this way, the connection terminals of the connection busbar are disposed at a side far away from the heat dissipation plate, so that connection can be facilitated, for example, as shown in fig. 3, after the power module is assembled, the connection terminals can be exposed outwards in a direction far away from the heat dissipation plate, so that subsequent connection and other operations can be facilitated.

In addition, as shown in fig. 3 and 4, the power module may further include a plurality of side plates 170, and the plurality of side plates 170 may be connected to the heat dissipation plate 110 and form a case accommodating the power device 130, the capacitor assembly 140, and the connection busbar together with the heat dissipation plate 110. As an example, the side plates 170 may be two, and as shown in fig. 3 and 4, the two side plates 170 may be disposed on two opposite sides of the heat dissipation plate 110 to accommodate and support all devices of the power module in a case surrounded by the side plates 170 and the heat dissipation plate 110.

In addition, openings may be provided on the sides of the case where the other two opposite sides of the heat dissipation plate 110 are located, so that the electronic devices inside the case can be exposed outwards, so that heat dissipation of the electronic devices such as the power device 130 and the capacitor assembly 140 can be facilitated while the side plates 170 and the heat dissipation plate 110 form protection and support for the electronic devices, and thus, heat dissipation surfaces are formed on three sides (two openings of the case and the heat dissipation plate) of the power module, and heat dissipation effect of the power module can be further improved.

According to the power module of the exemplary embodiment of the utility model, a compact layout can be realized while considering the heat dissipation effect, so as to be beneficial to the miniaturization of the module.

The second aspect of the utility model also provides a current transformer comprising a power module according to an exemplary embodiment of the utility model.

As an example, the power module may be a power module in a three-level energy storage converter (Power Conversion System, PCS), fig. 5 shows a schematic diagram of the circuit connections of the power module according to an exemplary embodiment of the utility model. As shown in fig. 5, the power module may include a plurality of power devices 130 and a capacitor assembly 140, each power device 130 may include IGBTs and diodes, such as IGBTs T11, T12, T13, T21, T22, T23 and diodes I11, I12, I13, I21, I22, I23, the capacitor assembly 140 may include a plurality of capacitors, such as capacitors C11, C12 … … C17 and capacitors C21, C22 … … C27, the DC ports of the energy storage converter (i.e., dc+ and DC-) may be used to connect to an energy storage device, such as an energy storage battery, and the ac ports of the energy storage converter (i.e., terminals A, B and C of fig. 5) may output or input ac power to discharge or charge the energy storage device.

According to an exemplary embodiment of the present utility model, the converter may further include a heat dissipation duct (e.g., the heat dissipation duct 200 shown in fig. 3), and the heat dissipation duct 200 is hermetically connected to the heat dissipation plate 110 at a second side of the heat dissipation plate 110 (i.e., the same side of the heat dissipation fin 120 as the heat dissipation plate 110), the heat dissipation fin 120 may be located within the heat dissipation duct 200, and the power device 130 and the capacitor assembly 140 may be located outside the heat dissipation duct 200, as shown in fig. 3.

The heat dissipation air duct 200 may include a partition, for example, a partition may be disposed at an end of the heat dissipation air duct 200, and the partition may be in sealing connection with a flange surface on the second side of the heat dissipation plate 110, so that the power module may be mounted to the heat dissipation air duct 200, so that the heat dissipation fins 120 may ventilate and dissipate heat in the heat dissipation air duct 200, while ensuring that dust and moisture caused by wind in the air duct do not affect other components of the power module. In this way, the heat dissipation plate 110 can be used as a partition, and the electronic devices such as the power device and the capacitor assembly and the heat dissipation fin are arranged in a separated mode, so that the reliability of the power module and the converter can be effectively improved, and the maintenance period of the power module and the converter can be prolonged.

A third aspect of the utility model also provides an energy storage system comprising a current transformer according to an exemplary embodiment of the utility model.

The converter and the energy storage system according to the exemplary embodiments of the present utility model have the power module as described above, and thus have the same advantageous effects as the power module described above, and thus are not described in detail.

Although exemplary embodiments of the present utility model have been described in detail above, various modifications and variations may be made to the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the utility model. It should be understood that such modifications and variations will still fall within the spirit and scope of the exemplary embodiments of the utility model as defined by the appended claims as seen by those skilled in the art.

Claims (10)

1. The utility model provides a power module, its characterized in that, power module includes heating panel, radiating fin, power device and capacitance component, the power device with capacitance component set up in the first side of heating panel, radiating fin set up in the second side of heating panel, wherein, the first side of heating panel is facing away from the second side of heating panel.

2. The power module of claim 1, wherein the heat dissipation plate has a flange surface formed thereon for sealing connection, the flange surface being disposed around the heat dissipation fins.

3. The power module of claim 1, wherein the power device is disposed proximate to the heat sink and the capacitive component is disposed on a side of the power device remote from the heat sink.

4. The power module of claim 3 further comprising a connection busbar disposed on a first side of the heat sink.

5. The power module of claim 4, wherein the connection busbar comprises an ac busbar and a dc busbar, the ac busbar being disposed on a first side of the capacitive assembly and the dc busbar being disposed on a second side of the capacitive assembly, wherein the first side of the capacitive assembly faces away from the second side of the capacitive assembly.

6. The power module of claim 4 or 5, wherein the connection busbar includes a busbar body and a connection terminal provided at a side of the busbar body remote from the heat dissipation plate.

7. The power module of claim 6 further comprising a plurality of side plates connected to the heat sink and together with the heat sink forming a housing that houses the power device, the capacitive assembly, and the connection busbar.

8. A current transformer, characterized in that it comprises a power module according to any one of claims 1 to 7.

9. The current transformer of claim 8, further comprising a heat sink channel in sealed connection with the heat sink plate on a second side of the heat sink plate, the heat sink fins being located within the heat sink channel, the power device and the capacitor assembly being located outside the heat sink channel.

10. An energy storage system, characterized in that it comprises a current transformer according to claim 8 or 9.

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