A high-power energy storage converter heat dissipation structure

Abstract

The utility model discloses a high -power energy storage converter heat dissipation structure relates to energy storage converter field. The structure includes the box body that is formed by the U type bottom shell, front panel, back panel and apron, and the box body is divided into two layers. Corresponding front panel is equipped with several one kind of heat dissipation fan in the lower layer, and it is hollowed out heat dissipation hole corresponding back panel, forms the heat dissipation air duct from front to back, and corresponding back panel is equipped with at least one second heat dissipation fan in the upper layer. Power inductance, IGBT radiator are located in the lower layer, and IGBT drive board, AC board, capacitor board are located in the upper layer. This layered design separates heat source, and it is favorable to heat dissipation, and can solve the heat dissipation problem of high -power energy storage converter due to power promotion and miniaturization.

Description

Technical Field

[0001] This solution relates to the field of energy storage converters, specifically a heat dissipation structure for a high-power energy storage converter. Background Technology

[0002] An energy storage converter is one of the core components of an energy storage system. It is responsible for bidirectional energy conversion between batteries (or other energy storage media) and the power grid or load, enabling the storage and release of electrical energy. It can convert AC power to DC power to charge batteries, and it can also convert DC power from batteries to AC power to feed into the power grid or power the load.

[0003] During operation, power electronic devices, inductors, capacitors, etc., in energy storage converters generate a lot of heat. If heat cannot be dissipated in time, it will lead to decreased efficiency, shortened device life, or even failure.

[0004] As battery cell technology advances towards larger capacities, the corresponding energy storage converters also need to increase power to meet these demands. Increased power means increased heat generation. Meanwhile, their size continues to shrink, leading to increasingly limited internal space and poor heat dissipation. These two conflicting development directions create a dilemma, necessitating an effective heat dissipation structure to address the heat dissipation problem of high-power energy storage converters and ensure reliable equipment operation. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a heat dissipation structure for a high-power energy storage converter.

[0006] The specific technical solution of this utility model to solve the above-mentioned technical problems is: a heat dissipation structure for a high-power energy storage converter, including a U-shaped bottom shell, a front panel, a rear panel, and a cover plate, which are enclosed to form a box, and the box is divided into two layers. The front panel is provided with several Class I cooling fans corresponding to the lower space position; the rear panel is provided with hollowed-out cooling holes corresponding to the lower space position, and the lower space forms a cooling air duct with the airflow direction from front to back; the rear panel is provided with at least one Class II cooling fan corresponding to the upper space position. The high-power energy storage converter includes a power inductor, an IGBT board, an IGBT driver board, an AC board, and a capacitor board. The IGBT board is equipped with an IGBT heat sink. The inductor and IGBT heat sink are located on the lower layer, and the IGBT driver board, AC board, and capacitor board are located on the upper layer.

[0007] This layered design effectively separates the heat sources that generate heat during equipment operation, avoiding excessive heat concentration and facilitating good heat dissipation.

[0008] Furthermore, the IGBT heat sink is a finned heat sink, which is located near the air outlet of a cooling fan. The orientation of the fin gaps is the same as the airflow direction of the cooling fan, ensuring that the low-temperature air from the outside enters the IGBT heat sink fin gaps as soon as possible, reducing the resistance of the airflow between the heat sink fins, increasing the airflow speed between the fins, and improving the heat dissipation effect.

[0009] Furthermore, the power inductor employs a vertically wound magnetic ring, which utilizes a flat wire vertical winding process to increase the heat dissipation area and reduce temperature rise. Placing this power inductor in the heat dissipation duct immediately behind the IGBT heatsink facilitates rapid heat dissipation.

[0010] Furthermore, an upper baffle and a lower baffle are provided between the air outlet of the cooling fan and the IGBT heat sink to guide the airflow of the cooling fan, reduce airflow loss, reduce turbulence, increase the airflow of the finned part, and facilitate the heat dissipation of the IGBT and power inductor.

[0011] Furthermore, the air intake baffle is detachably fixed to the front panel, facilitating individual disassembly for inspection and replacement of a type of fan.

[0012] Furthermore, the second type of cooling fan on the rear panel is used to exhaust the hot air in the upper space of the enclosure. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall layered structure of the heat dissipation structure of the high-power energy storage converter of this utility model. Figure 2 This is a schematic diagram of the lower-level component arrangement of the heat dissipation structure of the high-power energy storage converter of this utility model. Figure 3 This is a schematic diagram of the upper-layer component arrangement of the heat dissipation structure of the high-power energy storage converter of this utility model. Figure 4 This is a schematic diagram of the upper and lower baffle plates in the heat dissipation structure of the high-power energy storage converter of this utility model.

[0014] The following is a list of component names represented by the reference numerals in the attached diagram: 1. U-shaped bottom shell; 2. Front panel; 3. Rear panel; 4. Type I cooling fan; 5. Hollowed-out heat dissipation holes; 6. Type II cooling fan; 7. Power inductor; 8. IGBT driver board; 9. IGBT heat sink; 10. AC board; 11. Capacitor board; 12. Upper baffle; 13. Lower baffle; 14. Air intake baffle. Detailed Implementation

[0015] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0016] like Figure 1 As shown, a high-power energy storage converter heat dissipation structure includes a U-shaped bottom shell 1, a front panel 2, a rear panel 3, and a cover plate. These four parts enclose a box, which is divided into two layers.

[0017] The front panel 2 has five Class I cooling fans 4 at corresponding positions in the lower space; the rear panel 3 has hollowed-out heat dissipation holes 5 at corresponding positions in the lower space, forming a heat dissipation air duct from front to back in the lower space; the rear panel 3 has at least one Class II cooling fan 6 at corresponding positions in the upper space.

[0018] The high-power energy storage converter includes a power inductor 7, an IGBT board, an IGBT driver board 8, an AC board 10, and a capacitor board 11. The IGBT board is equipped with an IGBT heat sink 9, which is a finned heat sink. In principle, the number of cooling fans 4 is equivalent to the number of IGBT heat sinks 9, that is, one cooling fan 4 corresponds to one IGBT heat sink 9 to provide cooling air. Each IGBT heat sink 9 is located at the air outlet of a cooling fan 4, and the orientation of the fin gap is consistent with the airflow direction of the cooling fan 4, ensuring that the low-temperature outside air can enter the fin gap of the IGBT heat sink 9 as soon as possible, and reducing the resistance of the airflow between the fins, increasing the airflow speed between the fins, and enhancing the heat dissipation effect.

[0019] The power inductor 7 and IGBT heatsink 9 are located on the lower layer. The power inductor 7 uses a vertically wound magnetic ring, which employs a flat wire vertical winding process to increase the heat dissipation area and reduce temperature rise. Placing the power inductor 7 in the heat dissipation duct immediately behind the IGBT heatsink 9 helps to quickly dissipate its heat.

[0020] An upper baffle 12 and a lower baffle 13 are provided between the air outlet of the cooling fan 4 and the IGBT heat sink 9 to guide the airflow of the cooling fan 4, reduce airflow loss, reduce turbulence, increase airflow in the finned section, and facilitate heat dissipation of the IGBT and power inductor 7. The air inlet baffle 14 is detachably fixed to the front panel 2 for easy removal for inspection and replacement of the cooling fan.

[0021] The IGBT driver board 8, AC board 10, and capacitor board 11 are located on the upper layer. The secondary cooling fan 6 on the rear panel 3 is used to exhaust the hot air in the upper space of the enclosure.

[0022] This layered design effectively separates the heat sources that generate heat during equipment operation, preventing excessive heat concentration and facilitating good heat dissipation.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat dissipation structure for a high-power energy storage converter, comprising a U-shaped bottom shell, a front panel, a rear panel, and a cover plate, the four components enclosing each other to form a housing, characterized in that... The box is divided into two layers; The front panel is provided with several Class I cooling fans corresponding to the lower space position; the rear panel is provided with hollowed-out cooling holes corresponding to the lower space position, and the lower space forms a cooling air duct with the airflow direction from front to back; the rear panel is provided with at least one Class II cooling fan corresponding to the upper space position. The high-power energy storage converter includes a power inductor, an IGBT board, an IGBT driver board, an AC board, and a capacitor board. The IGBT board is equipped with an IGBT heat sink. The inductor and IGBT heat sink are located on the lower layer, and the IGBT driver board, AC board, and capacitor board are located on the upper layer.

2. The heat dissipation structure for a high-power energy storage converter according to claim 1, characterized in that, The IGBT heat sink is a finned heat sink, which is located near the air outlet of a cooling fan, and the orientation of the fin gaps is the same as the airflow direction of the cooling fan.

3. The heat dissipation structure for a high-power energy storage converter according to claim 2, characterized in that, The power inductor uses a vertically wound magnetic ring, which is manufactured using a flat wire vertical winding process.

4. The heat dissipation structure for a high-power energy storage converter according to any one of claims 1-3, characterized in that, An upper baffle and a lower baffle are provided between the air outlet of the cooling fan and the IGBT heat sink to guide the airflow from the cooling fan.

5. The heat dissipation structure for a high-power energy storage converter according to any one of claims 1-3, characterized in that, The air intake baffle is detachably fixed to the front panel.

6. The heat dissipation structure for a high-power energy storage converter according to claim 5, characterized in that, The second type of cooling fan on the rear panel is used to exhaust the hot air in the upper space of the box.

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