Power assembly and power conversion device
By optimizing the layout of power modules and capacitor modules, and adopting a stacked structure and connecting busbars, the problem of long device connection loops in existing technologies has been solved, resulting in a reduction in cost and volume, and improved space utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU INOVANCE TECH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-23
AI Technical Summary
In existing power conversion devices, the connection loops between IGBT modules, capacitor modules, and main components such as reactors are relatively long, resulting in high cost and large size.
The power module is divided into two groups of power devices, and the capacitor module is divided into two groups of capacitor units, which are respectively set on both sides of the heat sink and connected by a stacked structure and a connecting busbar. The reactor is located on the rear side of the power module, and the DC switch is located below the capacitor module, thus optimizing the device layout.
It effectively shortens the connection loop path, reduces the amount of busbars used, lowers costs and volume, and improves space utilization.
Smart Images
Figure CN224401381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power electronics technology, and in particular to a power component and a power conversion device. Background Technology
[0002] Power conversion devices (such as energy storage converters) are the "central hub" of energy storage systems, responsible for realizing bidirectional conversion and control of electrical energy. They can convert AC power into DC power to store electrical energy, and at the same time, they can convert the stored DC power into AC power to supply power to enterprise equipment.
[0003] In related technologies, the power components of power conversion devices include power modules (IGBT modules, Insulated Gate Bipolar Transistors) and capacitor modules. However, the layout of power conversion devices in related technologies results in long connection loops between IGBT modules and capacitor modules and major components such as reactors, leading to high costs and large sizes. Utility Model Content
[0004] The main purpose of this invention is to propose a power component and power conversion device, which aims to shorten the connection loop path between the power component and the main devices, so as to reduce cost and size.
[0005] To achieve the above objectives, this utility model proposes a power component, comprising:
[0006] A heat sink, the heat sink having two sides disposed opposite to each other;
[0007] A power module, comprising two sets of power devices, the two sets of power devices being disposed on opposite sides of the heat sink;
[0008] A capacitor module, comprising two sets of capacitor units, the two sets of capacitor units being disposed on opposite sides of the heat sink; the power device and the capacitor units located on the same side are interconnected.
[0009] In one embodiment, in the power device and the capacitor unit located on the same side, the capacitor unit is located on the side of the power device away from the heat sink.
[0010] In one embodiment, the power component further includes two stacked structures, which are disposed on opposite sides of the heat sink, and the power device and the capacitor unit located on the same side are connected through one of the stacked structures.
[0011] In one embodiment, the stacked structure includes a first conductive bus and a second conductive bus stacked together, wherein the first conductive bus and the second conductive bus are both connected to the power device on the same side and to the capacitor unit on the same side.
[0012] In one embodiment, the capacitor unit includes:
[0013] Capacitor structure;
[0014] The first capacitor busbar is connected to one side of the capacitor structure and is connected to the first busbar on the same side.
[0015] The second insulating element is stacked on the side of the first capacitor conductive bus away from the capacitor structure;
[0016] The second capacitor busbar is stacked on the side of the second insulating member away from the first capacitor busbar and connected to the second busbar on the same side.
[0017] In one embodiment, the power component further includes two transition conductors, one of which is connected to the stacked structure and the capacitor unit located on one side of the heat sink, and the other of which is connected to the stacked structure and the capacitor unit located on the other side of the heat sink.
[0018] In one embodiment, the power component further includes a connecting busbar that connects two of the transition buses;
[0019] And / or, a third insulating element is provided between the transfer bus and the capacitor unit.
[0020] In one embodiment, the power component further includes a reactor connected to the power module via a connecting busbar, the reactor being located on the rear side of the power module.
[0021] In one embodiment, the power component further includes a DC switch located below and connected to the capacitor module.
[0022] In one embodiment, the heat sink is a liquid cooling plate.
[0023] In one embodiment, the heat sink has a width direction, and the heat sink includes a first plate body and a second plate body arranged side by side along the width direction;
[0024] The first plate has an inlet channel and the second plate has an outlet channel, which are connected in series.
[0025] In one embodiment, the heat sink has a first side and a second side on opposite sides in the thickness direction, respectively;
[0026] One of the power devices includes an inner tube module and a first outer tube module, wherein the inner tube module is disposed on a first side of the first plate and the first outer tube module is disposed on a first side of the second plate;
[0027] Another power device includes a second outer tube module, which is disposed on the second side of the first board, and a circuit board is provided on the second side of the second board; the inner tube module and the first outer tube module are connected to the second outer tube module through an inner and outer connecting bar.
[0028] To achieve the above objectives, this utility model also proposes a power conversion device, comprising:
[0029] Cabinet;
[0030] The power component as described above is disposed within the cabinet.
[0031] The technical solution of this utility model divides the power module into two groups of power devices, which are then placed on opposite sides of the heat sink. Similarly, the capacitor module is divided into two groups of capacitor units, which are also placed on opposite sides of the heat sink. This achieves a more reasonable layout of the power module and capacitor module, effectively shortening the connection loops between the power module and capacitor module and other main components such as reactors. This reduces the amount of conductive material used in the connection loops, thereby reducing cost and volume.
[0032] In other words, this solution breaks away from the conventional layout of stacking power modules and capacitor modules, providing a wider range of layout options for subsequent power conversion device products. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0034] Figure 1 A schematic diagram of the structure of an embodiment of the power component provided by this utility model;
[0035] Figure 2 A top view of an embodiment of the power component provided by this utility model;
[0036] Figure 3 An exploded view of an embodiment of the power component provided by this utility model;
[0037] Figure 4A front view of a power module in one embodiment of the power component provided by this utility model;
[0038] Figure 5 Rear view of a power module in one embodiment of the power component provided by this utility model;
[0039] Figure 6 A schematic diagram of an embodiment of the power conversion device provided by this utility model.
[0040] Explanation of icon numbers:
[0041]
[0042]
[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0045] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0047] Power conversion devices (such as energy storage converters) are the "central hub" of energy storage systems, responsible for realizing bidirectional conversion and control of electrical energy. They can convert AC power into DC power to store electrical energy, and at the same time, they can convert the stored DC power into AC power to supply power to enterprise equipment.
[0048] In related technologies, the power components of power conversion devices include power modules (IGBT modules, Insulated Gate Bipolar Transistors) and capacitor modules. However, the layout of power conversion devices in related technologies results in long connection loops between IGBT modules and capacitor modules and major components such as reactors, leading to high costs and large sizes.
[0049] Based on the above problems, this utility model proposes a power component 100, which aims to shorten the connection loop path between the power component 100 and the main devices, so as to reduce cost and volume.
[0050] Please see Figures 1 to 3 In one embodiment of the present invention, the power component 100 includes a heat sink 10, a power module 20, and a capacitor module 30; the heat sink 10 has two sides arranged opposite to each other; the power module 20 includes two sets of power devices 20a, which are respectively disposed on both sides of the heat sink 10; the capacitor module 30 includes two sets of capacitor units 30a, which are respectively disposed on both sides of the heat sink 10; the power devices 20a and capacitor units 30a located on the same side are connected to each other.
[0051] The technical solution of this utility model divides the power module 20 into two groups of power devices 20a, with the two groups of power devices 20a respectively located on both sides of the heat sink 10, and divides the capacitor module 30 into two groups of capacitor units 30a, with the two groups of capacitor units 30a also located on both sides of the heat sink 10. This achieves a more reasonable layout of the power module 20 and the capacitor module 30, which can effectively shorten the connection circuit between the power module 20 and the capacitor module 30 and the main components such as the reactor, and reduce the amount of conductive material used in the connection circuit, thereby reducing cost and volume.
[0052] In other words, this solution breaks away from the conventional layout of stacking power modules 20 and capacitor modules 30, providing a wider range of layout options for the subsequent power conversion device 1000 product.
[0053] In this embodiment, the heat sink 10 is a structural component for dissipating heat from components such as the power module 20 and the capacitor module 30. Specifically, it can be a liquid cooling plate, an air cooling plate, or a fin structure.
[0054] Power module 20 enables effective power interaction between the energy storage system and the microgrid, achieving functions such as peak shaving and valley filling, load control, emergency response, grid connection / off-grid switching, and islanding operation. Capacitor module 30 is used for energy storage and buffering, voltage smoothing, and harmonic absorption. For power module 20 and capacitor module 30 on the same side, the external DC module is connected to capacitor unit 30a, which is connected to power device 20a. Power device 20a is connected to a reactor. The two sets of power devices 20a are connected in parallel to the AC module through two sets of reactors. Thus, DC power flows through the DC module to capacitor unit 30a, and then through capacitor unit 30a to power device 20a. Power device 20a performs DC-AC conversion, transforming DC into AC power. The AC power is then combined into a single AC module output after passing through the reactor, achieving a dual-branch power topology. For example, when the single-channel input DC power is 1725kW, the combined AC output is 3.5MW.
[0055] Two sets of power devices 20a are disposed on both sides of the heat sink 10, and two sets of capacitor units 30a are disposed on both sides of the heat sink 10. It is understood that the power devices 20a and capacitor units 30a located on the same side can be arranged along the thickness direction of the heat sink 10, or along the length direction, width direction, etc. of the heat sink 10, as long as the capacitor module 30 is split into two sets of capacitor units 30a and the two sets of capacitor units 30a are disposed on both sides of the heat sink 10.
[0056] In practical applications, the structures and dimensions of the two sets of power devices 20a can be the same or different. Similarly, the structures and dimensions of the two sets of capacitor units 30a can also be the same or different.
[0057] Please see Figure 1 , Figure 2 In one embodiment of the present invention, in the power device 20a and the capacitor unit 30a located on the same side, the capacitor unit 30a is disposed on the side of the power device 20a away from the heat sink 10.
[0058] This arrangement allows the power devices 20a and capacitor units 30a located on the same side to be arranged along the thickness direction of the heat sink 10, which is equivalent to placing the power module 20 and capacitor module 30 vertically on the same side. This can further improve the layout rationality between the power module 20 and capacitor module 30, thereby further shortening the connection loop between the power module 20 and capacitor module 30 and the main components such as reactors, reducing the amount of conductive material, and further reducing cost and volume.
[0059] Please see Figures 2 to 5In one embodiment of the present invention, the power component 100 further includes two stacked structures 40, which are respectively disposed on both sides of the heat sink 10. The power device 20a and the capacitor unit 30a located on the same side are connected through a stacked structure 40.
[0060] In this embodiment, the two stacked structures 40 are the positive electrode conductive bus and the negative electrode conductive bus, respectively.
[0061] With this configuration, corresponding stacked structures 40 are provided on both sides of the heat sink 10, so that the power device 20a and the capacitor unit 30a located on the same side can be connected through the corresponding stacked structures 40. Compared with the straight connection method, the connection method of the stacked structure 40 in this solution can further shorten the connection loop between the power device 20a and the capacitor unit 30a and the main components such as the reactor, reduce the amount of conductive busbars, and thus reduce the cost of using conductive busbars.
[0062] In practical applications, the stacked structure 40 can be either copper or aluminum.
[0063] Please see Figure 2 In one embodiment of the present invention, the stacked structure 40 includes a first conductive bus and a second conductive bus 43 stacked together. The first conductive bus and the second conductive bus 43 are both connected to the power device 20a on the same side and to the capacitor unit 30a on the same side.
[0064] With this configuration, the first and second conductive bars 43 of the stacked structure 40 are respectively connected to the two terminals of the power device 20a, and the first and second conductive bars 43 are respectively connected to the two terminals or two conductive bars of the capacitor unit 30a, which makes it easier to achieve a reliable connection between the stacked structure 40 and the power device 20a and the capacitor unit 30a.
[0065] In some embodiments, the stacked structure 40 further includes a first insulating member disposed between the first conductive busbar and the second conductive busbar 43, which can effectively isolate the first conductive busbar and the second conductive busbar 43 and prevent the first conductive busbar and the second conductive busbar 43 from conducting.
[0066] In practical applications, the first insulating component can be a non-conductive structural component such as a plastic component or a fiber component.
[0067] Please see Figures 1 to 3In one embodiment of the present invention, the capacitor unit 30a includes a capacitor structure 31, a first capacitor conductive bar 32, a second insulating member 33, and a second capacitor conductive bar 34; the first capacitor conductive bar 32 is connected to one side of the capacitor structure 31 and is connected to the first conductive bar on the same side; the second insulating member 33 is stacked on the side of the first capacitor conductive bar 32 away from the capacitor structure 31; the second capacitor conductive bar 34 is stacked on the side of the second insulating member 33 away from the first capacitor conductive bar 32 and is connected to the second conductive bar 43 on the same side.
[0068] In this embodiment, the first capacitor busbar 32 and the second capacitor busbar 34 are the positive electrode busbar and the negative electrode busbar, respectively. The capacitor structure 31 may include multiple capacitor cells. The multiple capacitor cells of the two capacitor units 30a may be arranged in two rows along the width direction of the capacitor module 30, and multiple capacitor cells may be arranged vertically along the height direction of the capacitor module 30.
[0069] This configuration, by connecting the first capacitor busbar 32 to the first conductive busbar of the same-side stacked structure 40, and the second capacitor busbar 34 to the second conductive busbar 43 of the same-side stacked structure 40, facilitates a more reliable connection between the stacked structure 40 and the power device 20a and capacitor unit 30a, through the cooperation of the first capacitor busbar 32 and the first conductive busbar, and the cooperation of the second capacitor busbar 34 and the second conductive busbar 43. Furthermore, the use of this bulk stacked conductive busbar method results in smaller and fewer stacked conductive busbars, and lower cost, thus significantly reducing the cost of the conductive busbars. In addition, by providing a second insulating element 33 between the first capacitor busbar 32 and the second capacitor busbar 34, effective isolation between them can be achieved, preventing conduction between them.
[0070] In practical applications, the second insulating component 33 can be a non-conductive structural component such as a plastic component or a fiber component.
[0071] Please see Figure 2 , Figure 3 In one embodiment of the present invention, the power component 100 further includes two transition conductive busbars 50, one of which is connected to the stacked structure 40 and capacitor unit 30a located on one side of the heat sink 10, and the other of which is connected to the stacked structure 40 and capacitor unit 30a located on the other side of the heat sink 10.
[0072] This configuration uses two separate connecting busbars 50 to connect the stacked structure 40 and the capacitor unit 30a, making it easier to achieve a reliable connection between the power device 20a and the capacitor unit 30a. Furthermore, the connecting busbars 50 can be arranged in a separate stacked layer with the stacked structure 40 and the capacitor unit 30a, further reducing the number of busbars used and thus saving on the cost of the busbars.
[0073] In some embodiments, one of the transition conductive busbars 50 is connected to the second conductive busbar 43 and the second capacitor conductive busbar 34 located on one side of the heat sink 10, and the other transition conductive busbar 50 is connected to the second conductive busbar 43 and the second capacitor conductive busbar 34 located on the other side of the heat sink 10.
[0074] Please see Figure 2 , Figure 3 In one embodiment of the present invention, the power component 100 further includes a connecting conductive bus 60, which connects two transition conductive buses 50.
[0075] This configuration makes it easier to connect the two transition conductors 50 by using a series connection bus, so as to realize the overall electrical circuit connection of the power component 100.
[0076] In some embodiments, the connecting busbar 60 may be designed as a U-shaped busbar to facilitate connection with two transition busbars 50.
[0077] Please see Figure 2 , Figure 3 In one embodiment of this utility model, a third insulating member 51 is provided between the adapter bus 50 and the capacitor unit 30a.
[0078] With this configuration, by providing a third insulating element 51 between the adapter conductive bus 50 and the capacitor unit 30a, effective isolation can be achieved between the adapter conductive bus 50 and the capacitor unit 30a at positions other than the terminal positions, thus preventing conduction between the adapter conductive bus 50 and the capacitor unit 30a at positions other than the terminal positions.
[0079] In practical applications, the third insulating component 51 can be a non-conductive structural component such as a plastic component or a fiber component.
[0080] In some embodiments, the third insulating member 51 may be disposed between the transition conductor 50 and the second capacitor conductor 34.
[0081] Please see Figure 6 In one embodiment of the present invention, the power component 100 further includes a reactor, which is connected to the power module 20 via a connecting busbar, and the reactor is located on the rear side of the power module 20.
[0082] This configuration, by installing the reactor on the rear side of the power module 20, makes the arrangement between the reactor and the power module 20 more compact and the space utilization rate higher. At the same time, it allows the use of shorter connecting busbars to connect the reactor and the power module 20, thereby reducing the volume and the amount of busbars used.
[0083] Please see Figure 6 In one embodiment of the present invention, the power component 100 further includes a DC switch 300, which is located below the capacitor module 30 and connected to the capacitor module 30.
[0084] This configuration, by mounting the DC switch 300 below the capacitor module 30, allows for a more compact arrangement between the DC switch 300 and the capacitor module 30, resulting in higher space utilization. This enables the use of shorter busbars to connect the DC switch 300 and the capacitor module 30, thereby reducing the size and the amount of busbars used.
[0085] In some embodiments, the DC switch 300 can be connected to the capacitor module 30 using a DC bus 400. Therefore, by rationally arranging the DC switch 300 and the capacitor module 30, the length of the DC bus 400 can be effectively shortened.
[0086] It should be noted that the DC switch 300 is a structural component used to introduce DC power, and may include, for example, a DC input copper busbar, a DC circuit breaker, a DC fuse, etc.
[0087] Please see Figures 1 to 5 In one embodiment of this utility model, the heat sink 10 is a liquid cooling plate.
[0088] With this configuration, the liquid cooling plate can better dissipate the heat generated by the power module 20 and capacitor module 30 during operation, resulting in high heat dissipation efficiency, uniform heat dissipation, and low cost.
[0089] Please see Figure 4 , Figure 5 In one embodiment of the present invention, the heat sink 10 has a width direction and includes a first plate 11 and a second plate 12 arranged side by side along the width direction; a water inlet channel is formed in the first plate 11 and a water outlet channel is formed in the second plate 12, and the water inlet channel and the water outlet channel are connected in series.
[0090] With this configuration, the refrigerant can flow into the water inlet 111 of the water inlet channel of the first plate 11, then flow to the water outlet channel of the second plate 12, and finally flow out from the water outlet 121 of the water outlet channel. This cycle can effectively remove the heat generated by the power module 20 and the capacitor module 30 during operation, achieving a full heat dissipation effect.
[0091] In some embodiments, a first connecting channel can be formed in the first plate 11 at an angle to the inlet channel, and a second connecting channel can be formed in the second plate 12 at an angle to the outlet channel. The first connecting channel and the second connecting channel are connected to each other so that the inlet channel, the first connecting channel, the second connecting channel and the outlet channel form a U-shaped channel, which allows the inlet channel and the outlet channel to be smoothly connected and can extend the flow path of the refrigerant through the first plate 11 and the second plate 12, thereby improving the heat dissipation effect.
[0092] Please see Figure 4 , Figure 5 In one embodiment of this utility model, the heat sink 10 has a first side a and a second side b on opposite sides in the thickness direction; a power device 20a includes an inner tube module 21 and a first outer tube module 22, the inner tube module 21 is disposed on the first side a of the first plate 11, and the first outer tube module 22 is disposed on the first side a of the second plate 12; another power device 20a includes a second outer tube module 23, the second outer tube module 23 is disposed on the second side b of the first plate 11, and a circuit board 25 is disposed on the second side b of the second plate 12; the inner tube module 21 and the first outer tube module 22 are connected to the second outer tube module 23 through an inner and outer connecting strip 24.
[0093] In this embodiment, the first side a and the second side b of the heat sink 10 are the front and back sides of the heat sink 10, respectively.
[0094] With this configuration, by placing the inner tube module 21 and the first outer tube module 22 on the first side a of the first plate 11 and the first side a of the second plate 12 respectively, and installing the second outer tube module 23 on the second side b of the first plate 11, while installing the circuit board 25 on the second side b of the second plate 12, the space on both sides of the heat sink 10 can be fully utilized, thereby reducing the overall size of the machine.
[0095] Please see Figure 6 This utility model also proposes a power conversion device 1000, which includes a cabinet 200 and a power component 100. The specific structure of the power component 100 is as described in the above embodiments. Since this power conversion device 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The power component 100 is disposed inside the cabinet 200.
[0096] In this embodiment, the cabinet 200 is the supporting structure of the whole machine, used to install and fix the power components 100 and other structures.
[0097] Please see Figure 6 In one embodiment of this utility model, the power conversion device 1000 is an energy storage converter. Of course, in other embodiments, the power conversion device 1000 can also be other devices capable of power conversion.
[0098] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A power component, characterized in that, include: A heat sink, the heat sink having two sides disposed opposite to each other; A power module, comprising two sets of power devices, the two sets of power devices being disposed on opposite sides of the heat sink; A capacitor module, comprising two sets of capacitor units, the two sets of capacitor units being disposed on opposite sides of the heat sink; the power device and the capacitor units located on the same side are interconnected.
2. The power component as described in claim 1, characterized in that, In the power device and the capacitor unit located on the same side, the capacitor unit is located on the side of the power device away from the heat sink.
3. The power component as described in claim 1, characterized in that, The power component also includes two stacked structures, which are respectively disposed on both sides of the heat sink. The power device and the capacitor unit located on the same side are connected through one of the stacked structures.
4. The power component as described in claim 3, characterized in that, The stacked structure includes a first conductive bus and a second conductive bus stacked together. Both the first conductive bus and the second conductive bus are connected to the power device on the same side and to the capacitor unit on the same side.
5. The power component as claimed in claim 4, characterized in that, The capacitor unit includes: Capacitor structure; The first capacitor busbar is connected to one side of the capacitor structure and is connected to the first busbar on the same side. The second insulating element is stacked on the side of the first capacitor conductive bus away from the capacitor structure; The second capacitor busbar is stacked on the side of the second insulating member away from the first capacitor busbar and connected to the second busbar on the same side.
6. The power component as claimed in claim 3, characterized in that, The power component also includes two transition conductors, one of which is connected to the stacked structure and the capacitor unit located on one side of the heat sink, and the other of which is connected to the stacked structure and the capacitor unit located on the other side of the heat sink.
7. The power component as claimed in claim 6, characterized in that, The power component also includes a connecting busbar that connects two of the transition busbars; And / or, a third insulating element is provided between the transfer bus and the capacitor unit.
8. The power component as claimed in any one of claims 1 to 7, characterized in that, The power component also includes a reactor, which is connected to the power module via a connecting busbar, and the reactor is located on the rear side of the power module.
9. The power component as claimed in any one of claims 1 to 7, characterized in that, The power component also includes a DC switch located below and connected to the capacitor module.
10. The power component as claimed in any one of claims 1 to 7, characterized in that, The heat sink is a liquid cooling plate.
11. The power component as claimed in claim 10, characterized in that, The heat sink has a width direction, and the heat sink includes a first plate body and a second plate body arranged side by side along the width direction; The first plate has an inlet channel and the second plate has an outlet channel, which are connected in series.
12. The power component as claimed in claim 11, characterized in that, The heat sink has a first side and a second side on opposite sides in the thickness direction; One of the power devices includes an inner tube module and a first outer tube module, wherein the inner tube module is disposed on a first side of the first plate and the first outer tube module is disposed on a first side of the second plate; Another power device includes a second outer tube module, which is disposed on the second side of the first board, and a circuit board is provided on the second side of the second board; the inner tube module and the first outer tube module are connected to the second outer tube module through an inner and outer connecting bar.
13. A power conversion device, characterized in that, include: Cabinet; The power component as described in any one of claims 1 to 12, wherein the power component is disposed within the cabinet.