Heat dissipation device for improving temperature in energy storage converter

Abstract

The utility model relates to the technical field of energy storage converters, and provides a heat dissipation device for improving the temperature in an energy storage converter, which comprises a case, a double-sided relieved tooth radiator, an internal heat dissipation fan, an external fan and an air duct, the case is composed of the inside of the case and the bottom of the case, and the internal heat dissipation fan comprises a first fan and a second fan. The first fan and the second fan are both arranged in the case, the power unit radiator, the first flow guide plate and the second flow guide plate are arranged at the bottom of the case, and the power unit radiator, the double-face relieved tooth radiator, the first flow guide plate, the second flow guide plate and the external fan are all arranged in the air duct. Through the double-sided relieved tooth radiator, the double-sided radiator upper relieved teeth and the double-sided radiator lower relieved teeth, the heat resistance of a heat exchange path between air inside and outside the case is reduced, heat exchange between air inside and outside the case is enhanced, the temperature of the air inside the case can be greatly improved, and the situation that derating is triggered due to the too high temperature and the client income is affected is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage inverters, and particularly relates to a heat dissipation device for improving the temperature inside an energy storage inverter. Background Art

[0002] Energy storage inverters are usually used in the environment of outdoor cabinets. Although a large amount of water or dust can be blocked through some waterproof and dustproof measures, there is still a lot of water vapor and fine dust that cannot be filtered out and enter the chassis. If electrical components are exposed to an environment with water vapor and dust for a long time, their service life will be seriously affected. Therefore, electrical parts such as communication units, power units, main control units, DC sides, and AC sides are usually concentrated in a closed and highly protected cavity, and the radiators of power units and the radiators of reactors are arranged in the bottom air duct of the product for heat dissipation. During the operation of the energy storage inverter, electrical components such as AC molded case circuit breakers, DC load switches, DC contactors, fuses, and filter plates will generate a certain amount of heat. If these heats are not conducted out in time, the temperature inside the chassis will gradually increase.

[0003] When a highly protected energy storage inverter is integrated into a battery cabinet, the radiators of its power unit and reactor are provided with a bottom air duct with a self - equipped fan. When the fan operates, it can quickly cool the radiators in the air duct. However, considering that the floor area of the battery cabinet should be as small as possible, the space reserved around the energy storage inverter by the battery cabinet is extremely small, and the air flow is weak, making it difficult to lower the temperature of the surrounding shells inside the chassis, resulting in the heat generated by electrical components such as filter plates inside the chassis not being able to be dissipated in time. Therefore, it is necessary to consider establishing a heat transfer path with low thermal resistance between the inside of the chassis and the bottom air duct. Summary of the Utility Model

[0004] The utility model provides a heat dissipation device for improving the temperature inside an energy storage inverter, which establishes a heat transfer path with low thermal resistance between the inside of the chassis and the bottom air duct, and improves the temperature inside the energy storage inverter.

[0005] The technical solution of the utility model is as follows: A heat dissipation device for improving the temperature inside an energy storage inverter, comprising: a chassis, a double - sided shovel - tooth radiator, an internal heat dissipation fan, an external fan, and an air duct;

[0006] The chassis is composed of the inside of the chassis and the bottom of the chassis;

[0007] The internal heat dissipation fan includes a first fan and a second fan, and both the first fan and the second fan are arranged inside the chassis;

[0008] The power unit radiator, a first deflector, and a second deflector are respectively arranged on the bottom of the chassis, and the power unit radiator, the double - sided shovel - tooth radiator, the first deflector, the second deflector, and the external fan are all arranged inside the air duct;

[0009] The double-sided shovel-tooth radiator includes an upper shovel-tooth of the double-sided radiator and a lower shovel-tooth of the double-sided radiator, and the double-sided shovel-tooth radiator is fixedly installed on the bottom of the chassis, and one end of the upper shovel-tooth of the double-sided radiator extends into the chassis.

[0010] Preferably, a DC side support member is arranged inside the chassis, a DC side electrical component is fixedly installed on the DC side support member, and the DC side support member is located on one side of the upper shovel-tooth of the double-sided radiator.

[0011] Preferably, a fan bracket is arranged inside the chassis, both ends of the fan bracket are fixedly connected to the chassis, and the first fan is fixed on the fan bracket.

[0012] Preferably, a sealing ring is installed on the double-sided shovel-tooth radiator, and the sealing ring is located outside the upper shovel-tooth of the double-sided radiator.

[0013] Preferably, an air inlet plate is fixedly installed on one side of the chassis, and the air inlet plate is located on one side of the external fan.

[0014] Preferably, an air outlet plate is fixedly installed on one side of the chassis away from the air inlet plate.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] Through the double-sided shovel-tooth radiator, the upper shovel-tooth of the double-sided radiator and the lower shovel-tooth of the double-sided radiator, the thermal resistance of the heat exchange path between the air inside and outside the chassis is reduced, the heat exchange between the air inside and outside the chassis is strengthened, the temperature of the air inside the chassis can be greatly improved, and the derating caused by too high temperature can be prevented from affecting the customer's income. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0018] Figure 1 is the overall three-dimensional structure schematic diagram proposed by the present utility model;

[0019] Figure 2 is the three-dimensional structure schematic diagram of the second fan proposed by the present utility model;

[0020] Figure 3 is the three-dimensional structure schematic diagram of the DC side support member proposed by the present utility model;

[0021] Figure 4 is the structure schematic diagram of the double-sided shovel-tooth radiator proposed by the present utility model;

[0022] In the figure: 1. Chassis; 2. Inside the chassis; 3. Bottom of the chassis; 4. First fan; 5. Second fan; 6. DC-side electrical components; 7. Power unit radiator; 8. Double-sided shovel-tooth radiator; 9. First deflector; 10. Second deflector; 11. External fan; 12. Upper shovel teeth of the double-sided radiator; 13. Lower shovel teeth of the double-sided radiator; 14. DC-side support; 15. Sealing ring; 16. Fan bracket; 17. Air inlet plate; 18. Air outlet plate. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] Please refer to Figure 1 - Figure 4 , a heat dissipation device for improving the temperature inside an energy storage converter, including: chassis 1, double-sided shovel-tooth radiator 8, internal heat dissipation fans, external fan 11 and air ducts;

[0026] The chassis 1 is composed of the inside of the chassis 2 and the bottom of the chassis 3;

[0027] The internal heat dissipation fans include a first fan 4 and a second fan 5, and both the first fan 4 and the second fan 5 are arranged inside the chassis 2;

[0028] On the bottom of the chassis 3, a power unit radiator 7, a first deflector 9 and a second deflector 10 are respectively arranged, and the power unit radiator 7, the double-sided shovel-tooth radiator 8, the first deflector 9, the second deflector 10 and the external fan 11 are all arranged in the air duct;

[0029] The double-sided shovel-tooth radiator 8 includes upper shovel teeth 12 of the double-sided radiator and lower shovel teeth 13 of the double-sided radiator, and the double-sided shovel-tooth radiator 8 is fixedly installed on the bottom of the chassis 3, and one end of the upper shovel teeth 12 of the double-sided radiator extends into the inside of the chassis 2;

[0030] A DC-side support 14 is arranged inside the chassis 2, a DC-side electrical component 6 is fixedly installed on the DC-side support 14, and the DC-side support 14 is located on one side of the upper shovel teeth 12 of the double-sided radiator.

[0031] A heat dissipation device for improving the temperature inside an energy storage converter provided by the utility model. When the air inside the chassis reaches a certain temperature, the first fan 4 and the second fan 5 will start. Then, the air generated by the first fan 4 will pass through the internally heated DC-side electrical components 6 inside the chassis 2, etc. After heating up, it will enter the air inlet of the second fan 5. Then, after being pressurized by the second fan 5, it will flow through the DC-side electrical components 6, the DC-side support 14, and the area of the upper shovel teeth 12 of the double-sided radiator. Then, because there are many shovel teeth on the double-sided shovel-tooth radiator 8, the heat transfer area is large and the surface temperature is low, a large amount of heat of the air inside the chassis 2 can be taken away, thereby being able to reduce the temperature inside the chassis 2. At the same time, the external fan 11 inside the bottom 3 of the chassis will also start, thereby bringing in a large amount of low-temperature air. Then, under the guiding action of the first deflector 9 and the second deflector 10, the low-temperature air will successively flow through the lower shovel teeth 13 of the double-sided radiator and the power unit radiator 7, thereby improving the problem of the temperature inside the energy storage converter and avoiding the problem of derating due to excessive temperature inside the chassis.

[0032] In addition, it should be noted that since the selection of the external fan 11 is configured for the power unit, the air volume generated by it far exceeds the heat conduction requirement of the double-sided shovel-tooth radiator 8. Thus, the air flow generated by the external fan 11 can quickly take away the heat brought by the upper shovel teeth 12 of the double-sided radiator. In addition, considering that the space inside the chassis 2 is very compact and the height of the upper shovel teeth 12 of the double-sided radiator is small, in order to ensure sufficient heat transfer area, the distance between the fins is also set very small. Then, the space at the bottom 3 of the chassis is large, and the height of the lower shovel teeth 13 of the double-sided radiator can be set higher. However, due to the large air volume at the bottom 3 of the chassis, the distance between the fins can be enlarged to 1.5 times the distance between the fins of the upper shovel teeth 12 of the double-sided radiator.

[0033] Furthermore, a fan bracket 16 is provided inside the chassis 2. Both ends of the fan bracket 16 are fixedly connected to the chassis 1, and the first fan 4 is fixed on the fan bracket 16.

[0034] Specifically, through the fan bracket 16, it is not only convenient to install the first fan 4 inside the chassis 2, but also enables the installation position and quantity of the first fan 4 to be adjusted and increased according to requirements, thus no longer being limited to the corner.

[0035] Furthermore, a sealing ring 15 is installed on the double-sided shovel-tooth radiator 8, and the sealing ring 15 is located outside the upper shovel teeth 12 of the double-sided radiator.

[0036] Specifically, through the sealing ring 15, the high protection requirements inside the entire chassis are ensured.

[0037] Furthermore, an air inlet plate 17 is fixedly installed on one side of the chassis 1, and the air inlet plate 17 is located on one side of the external fan 11. An air outlet plate 18 is fixedly installed on the side of the chassis 1 away from the air inlet plate 17.

[0038] Specifically, through the air inlet plate 17, the low-temperature air outside the chassis 1 can quickly enter the chassis 1 under the action of the external fan 11, and then through the air outlet plate 18, the hot air flowing through the lower shovel teeth 13 of the double-sided radiator and the power unit radiator 7 can be discharged from the chassis 1.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat dissipation device for improving the temperature inside an energy storage converter, characterized in that: include: A chassis (1), a double-sided skived-tooth heat sink (8), an internal cooling fan, an external fan (11) and an air duct; The chassis (1) is composed of a chassis interior (2) and a chassis bottom (3); The internal heat dissipation fan comprises a first fan (4) and a second fan (5), and the first fan (4) and the second fan (5) are both arranged inside the chassis (2); A power unit radiator (7), a first guide plate (9) and a second guide plate (10) are respectively arranged on the bottom (3) of the chassis, and the power unit radiator (7), the double-sided skived radiator (8), the first guide plate (9), the second guide plate (10) and the external fan (11) are all arranged in the air duct; The double-sided skived-tooth radiator (8) comprises upper skived teeth (12) of the double-sided radiator and lower skived teeth (13) of the double-sided radiator, and the double-sided skived-tooth radiator (8) is fixedly mounted on the bottom (3) of the chassis, and one end of the upper skived teeth (12) of the double-sided radiator extends into the inside (2) of the chassis.

2. A heat dissipation device for improving the temperature inside an energy storage converter according to claim 1, characterized in that: A DC side support member (14) is provided inside the chassis (2), a DC side electrical component (6) is fixedly mounted on the DC side support member (14), and the DC side support member (14) is located on one side of the skived teeth (12) on the double-sided heat sink.

3. A heat dissipation device for improving the temperature inside an energy storage converter according to claim 1, characterized in that: A fan bracket (16) is arranged inside the chassis (2), both ends of the fan bracket (16) are fixedly connected to the chassis (1), and the first fan (4) is fixed on the fan bracket (16).

4. A heat dissipation device for improving the temperature inside an energy storage converter according to claim 1, characterized in that: A sealing ring (15) is installed on the double-sided skived-tooth radiator (8), and the sealing ring (15) is located on the outside of the skived teeth (12) on the double-sided radiator.

5. A heat dissipation device for improving the temperature inside an energy storage converter according to claim 1, characterized in that: An air inlet plate (17) is fixedly mounted on one side of the chassis (1), and the air inlet plate (17) is located on one side of the external fan (11).

6. A heat dissipation device for improving the temperature inside an energy storage converter according to claim 5, characterized in that: An air outlet plate (18) is fixedly mounted on a side of the chassis (1) away from the air inlet plate (17).

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