Battery thermal management unit electric control box heat dissipation structure and electric locomotive

Abstract

The utility model provides a battery thermal management unit electric control box heat dissipation structure first, including electric control box, heat dissipation fan, fin and heat dissipation air duct. Heat dissipation fan sets up on electric control box, is located in the vicinity of the radiator of frequency converter and rectifier bridge, can work alone under the natural air cooling condition. The utility model further provides electric locomotive that is provided with battery thermal management unit electric control box heat dissipation structure. The utility model provides a battery thermal management unit electric control box heat dissipation structure and electric locomotive, and heat dissipation air duct sets up in the any side of electric control box periphery, is linked together with heat dissipation fan, is used for guiding airflow to flow through fin, and heat dissipation air duct is linked together with condensing fan, can form the negative pressure forced air flow under the compressor opening condition through condensing fan, enhances the heat dissipation effect. The structure design is simple, and the adaptability is strong, can effectively solve the heat dissipation problem of frequency converter and rectifier bridge in electric control box.

Description

Technical Field

[0001] This utility model relates to the field of battery thermal management technology, specifically to a heat dissipation structure for a battery management unit control box and a tram locomotive using the heat dissipation structure. Background Technology

[0002] With the continuous development of electric locomotive technology, the heat dissipation problem of battery thermal management systems has become increasingly prominent. Especially in high-power dual-source mainline electric locomotives, the electrical control box of the traction battery thermal management unit contains multiple high-power electronic components, such as frequency converters and rectifier bridges. These components generate a large amount of heat during operation. If heat dissipation is not timely, it will lead to excessively high component temperatures, thereby affecting their performance and lifespan, and even causing malfunctions.

[0003] Existing heat dissipation solutions typically rely on condenser fans and natural air cooling. However, under certain operating conditions, such as natural air cooling, the compressor and condenser fan are not running, and natural air cooling alone cannot meet the heat dissipation requirements. Furthermore, existing heat dissipation structures are often complex in design, have limited heat dissipation effectiveness, and cannot adapt to the heat dissipation needs under different operating conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a heat dissipation structure for the battery management unit control box and a tram locomotive, which effectively solves the heat dissipation problem of the control box.

[0005] To solve the above-mentioned technical problems, this utility model first provides a heat dissipation structure for the control box of a battery management unit, adopting the following technical solution:

[0006] A heat dissipation structure for the control box of a battery thermal management unit includes:

[0007] Electrical control box;

[0008] A cooling fan is mounted on the electrical control box;

[0009] A heat dissipation duct is provided on any side of the outer periphery of the electrical control box, and the heat dissipation duct is connected to the cooling fan;

[0010] The heat dissipation duct is connected to the condenser fan of the battery thermal management unit. When the compressor is running, the condenser fan creates negative pressure in the heat dissipation duct to force airflow and cool the electrical control box.

[0011] Furthermore, the heat dissipation duct includes an air inlet and an air outlet. The air inlet is connected to the cooling fan, and the air outlet is connected to the condenser fan, forming an airflow circulation path.

[0012] Furthermore, the electrical control box is equipped with a frequency converter board and a rectifier bridge, and a heat sink is provided at the frequency converter board and / or the rectifier bridge.

[0013] Furthermore, the surface of the radiator is provided with multiple heat dissipation fins to increase the heat dissipation area.

[0014] Furthermore, the cooling fan is located at the position of the inverter board heat sink and / or rectifier bridge heat sink on the electrical control box.

[0015] Furthermore, the airflow direction of the cooling fan is consistent with the airflow direction of the cooling duct.

[0016] Furthermore, the air inlet and outlet of the heat dissipation duct are respectively equipped with guide plates to optimize the airflow path.

[0017] Furthermore, the cooling fan is a low-noise fan.

[0018] Furthermore, a sealing element is provided at the connection between the heat dissipation duct and the condenser fan.

[0019] This utility model further provides an electric locomotive, which adopts the following technical solution:

[0020] An electric locomotive is equipped with a heat dissipation structure for the battery thermal management unit control box as described above.

[0021] This utility model provides a heat dissipation structure for the control box of a battery thermal management unit and a tram locomotive, which, compared with the prior art, have the following effective effects and advancements:

[0022] High-efficiency heat dissipation: Through the combined design of cooling fans and cooling ducts, it can provide an effective heat dissipation solution under different operating conditions, ensuring that the frequency converter and rectifier bridge in the control box are fully cooled.

[0023] High adaptability: The cooling fan can work independently under natural air cooling conditions, ensuring that the inverter and rectifier bridge can still be effectively cooled when the compressor and condenser fan are not running.

[0024] Simple structure: The heat dissipation duct is simple in design, easy to manufacture and maintain, and can effectively reduce production costs.

[0025] Low noise: The cooling fan adopts a low noise design and the fan speed is adjustable, which can adapt to different cooling needs and reduce the noise of the unit during operation.

[0026] High durability: The heat dissipation duct is made of high-temperature resistant plastic or metal, which can withstand long-term use in high-temperature environments, ensuring the durability of the heat dissipation structure.

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0029] In the attached diagram:

[0030] Figure 1 This utility model provides a schematic diagram of the heat dissipation structure at the bottom of the control box in a battery thermal management unit control box heat dissipation structure.

[0031] Figure 2 This utility model provides a schematic diagram of the heat dissipation airflow direction under compressor-on operation in the heat dissipation structure of the control box of a battery thermal management unit. Figure 1 ;

[0032] Figure 3 This utility model provides a schematic diagram of the heat dissipation airflow direction under compressor-on operation in the heat dissipation structure of the control box of a battery thermal management unit. Figure 2 ;

[0033] Figure 4 This utility model provides a schematic diagram of the heat dissipation direction under natural air cooling conditions in the heat dissipation structure of the control box of a battery thermal management unit.

[0034] The components include: 1. Cooling fan; 2. Radiator; 3. Cooling duct; 4. Electrical control box; 5. Condenser fan.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] This utility model first provides a heat dissipation structure for the control box of a battery thermal management unit, including:

[0040] Electrical control box 4;

[0041] Cooling fan 1 is mounted on the electrical control box 4;

[0042] The heat dissipation duct 3 is disposed on any side of the outer periphery of the electrical control box 4, and the heat dissipation duct 3 is connected to the cooling fan 1;

[0043] The heat dissipation duct 3 is connected to the condenser fan 5 of the battery thermal management unit. When the compressor is running, the condenser fan 5 creates a negative pressure in the heat dissipation duct 3 to force airflow and cool the electrical control box 4.

[0044] This utility model provides a heat dissipation structure for the control box of a battery thermal management unit, specifically including the following embodiments:

[0045] Example 1

[0046] In this embodiment, as Figures 1 to 4 As shown, the heat dissipation structure of the battery thermal management unit's control box includes a control box 4. The control box 4 houses an inverter and a rectifier bridge. An aluminum heat sink 2 is fixed to the heat sink 2 of the inverter and / or rectifier bridge. The surface of the heat sink 2 is provided with multiple heat dissipation fins to increase the heat dissipation area. A cooling fan 1 is located on the side wall of the control box 4, near the heat sink 2 of the inverter and rectifier bridge. The airflow direction of the cooling fan 1 is consistent with the airflow direction of the cooling duct 3.

[0047] Preferably, in this embodiment, both the frequency converter and the rectifier bridge are equipped with heat sinks 2. Each heat sink 2 has a similar structural shape, differing only in size. The volume of the heat sink 2, as well as the number and length of its heat dissipation fins, are adjusted according to the volume of the frequency converter and the rectifier bridge to adjust the heat dissipation effect of the heat sink 2. In practical applications, the frequency converter and the rectifier bridge use a single heat sink 2 for heat dissipation.

[0048] The electrical control box 4 is equipped with a cooling fan 1, which is located at the position of the inverter board heat sink 2 and / or rectifier bridge heat sink 2 inside the electrical control box 4, especially at the position where the air outlet direction is towards the heat sink 2, so as to improve the heat dissipation efficiency.

[0049] At least one side wall of the cavity containing the electrical control box 4 is provided with a grille to allow airflow. Under the action of the cooling fan 1, the air outside the electrical control box 4 forms an airflow that enters the cavity of the electrical control box 4 through the grille and then flows out through the corresponding grille. The cooling fan 1 is located at the radiator 2, so that the airflow outside the cavity enters the cavity under the action of the cooling fan 1, passes through the heat dissipation fins of the radiator 2, and carries away the heat on the radiator 2.

[0050] The heat dissipation duct 3 is installed on any side wall of the outer periphery of the electrical control box 4. The air inlet of the heat dissipation duct 3 is connected to the cooling fan 1, and the air outlet is connected to the condenser fan 5, forming an airflow circulation path. Furthermore, the air inlet / air intake end of the heat dissipation duct 3 is connected to any side wall of the electrical control box 4. The side wall of the electrical control box 4 on that side has a grille as described above, forming the air outlet of the electrical control box 4. The air inlet of the heat dissipation duct 3 is connected to the air outlet on the electrical control box 4, thereby connecting with the cooling fan 1. This allows the airflow generated by the cooling fan 1 to enter the heat dissipation duct 3 and finally be discharged, thereby realizing the airflow at the heat dissipation fins of the electrical control box 4 and achieving the heat dissipation effect.

[0051] Furthermore, the air outlet of the heat dissipation duct 3 is connected to the condenser fan 5, forming an airflow circulation path. The condenser fan 5 creates negative pressure within the heat dissipation duct 3, forcing airflow to cool the electrical control box 4.

[0052] The heat dissipation duct 3 is arc-shaped, which ensures uniform airflow distribution and avoids localized overheating. The air inlet and outlet of the heat dissipation duct 3 are equipped with guide vanes to optimize the airflow path.

[0053] The heat dissipation duct 3 wraps around the heat dissipation fins of the electrical control box 4. It is made of stainless steel and aluminum alloy plates. The duct and the fan interface are smoothly transitioned in height to reduce airflow resistance.

[0054] like Figure 2 and Figure 3As shown, when the compressor is running, the condenser fan 5 operates. Under the action of the condenser fan 5, a negative pressure is formed inside the heat dissipation duct 3, i.e., the airflow path. This, combined with the cooling fan 1, forces air to flow through the heat dissipation duct 3, cooling the inverter and rectifier bridge inside the electrical control box 4. Figure 4 As shown, under natural air cooling conditions, the compressor and condenser fan 5 do not operate, and the cooling fan 1 works alone, guiding airflow through the cooling duct 3 to dissipate heat from the inverter and rectifier bridge.

[0055] Example 2

[0056] Based on Embodiment 1, in this embodiment, the cooling fan 1 is a low-noise fan. A seal is provided at the connection between the cooling duct 3 and the condenser fan 5 to ensure no airflow leakage. The cooling duct 3 is made of high-temperature resistant plastic or metal, capable of withstanding long-term use in high-temperature environments.

[0057] A filter screen is installed at the air outlet of the heat dissipation duct 3 to prevent dust and impurities from entering the electrical control box 4. A shock absorption device is installed at the connection between the cooling fan 1 and the heat dissipation duct 3 to reduce vibration and noise during fan operation.

[0058] This utility model further provides an electric locomotive, which is equipped with a heat dissipation structure for the battery thermal management unit control box as described above.

[0059] Based on Embodiments 1 and / or 2, in this embodiment, a heat dissipation structure for the control box of a battery thermal management unit is applicable to the thermal management unit of the traction battery in a high-power dual-source mainline electric locomotive project. The design of the heat dissipation duct 3 ensures an effective heat dissipation solution under both natural air cooling and compressor operation conditions. The positions of the air inlet and outlet of the heat dissipation duct 3 are optimized to maximize the use of the negative pressure generated by the condenser fan 5, thereby enhancing the heat dissipation effect.

[0060] This utility model provides a heat dissipation structure for the control box of a battery thermal management unit and a tram locomotive, which, compared with the prior art, have the following effective effects and advancements:

[0061] High-efficiency heat dissipation: Through the combined design of cooling fans and cooling ducts, it can provide an effective heat dissipation solution under different operating conditions, ensuring that the frequency converter and rectifier bridge in the control box are fully cooled.

[0062] High adaptability: The cooling fan can work independently under natural air cooling conditions, ensuring that the inverter and rectifier bridge can still be effectively cooled when the compressor and condenser fan are not running.

[0063] Simple structure: The heat dissipation duct is simple in design, easy to manufacture and maintain, and can effectively reduce production costs.

[0064] Low noise: The cooling fan adopts a low noise design, which can adapt to different cooling needs and reduce the noise of the unit during operation.

[0065] High durability: The heat dissipation duct is made of high-temperature resistant plastic or metal, which can withstand long-term use in high-temperature environments, ensuring the durability of the heat dissipation structure.

[0066] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A heat dissipation structure for the control box of a battery thermal management unit, characterized in that: Including, electrical control box; A cooling fan is mounted on the electrical control box; A heat dissipation duct is provided on any side of the outer periphery of the electrical control box, and the heat dissipation duct is connected to the cooling fan; The heat dissipation duct is connected to the condenser fan of the battery thermal management unit. When the compressor is running, the condenser fan creates negative pressure in the heat dissipation duct to force airflow and cool the electrical control box.

2. The heat dissipation structure of the battery thermal management unit control box according to claim 1, characterized in that: The heat dissipation duct includes an air inlet and an air outlet. The air inlet is connected to the cooling fan, and the air outlet is connected to the condenser fan, forming an airflow circulation path.

3. The heat dissipation structure of the battery thermal management unit control box according to claim 1, characterized in that: The electrical control box is equipped with a frequency converter board and a rectifier bridge, and a heat sink is provided at the frequency converter board and / or rectifier bridge.

4. The heat dissipation structure of the battery thermal management unit control box as described in claim 3, characterized in that: The surface of the radiator is provided with multiple heat dissipation fins to increase the heat dissipation area.

5. The heat dissipation structure of the battery thermal management unit control box according to claim 3, characterized in that: The cooling fan is located at the position of the inverter board heat sink and / or rectifier bridge heat sink on the electrical control box.

6. The heat dissipation structure of the battery thermal management unit control box as described in claim 5, characterized in that: The airflow direction of the cooling fan is consistent with the airflow direction of the cooling duct.

7. The heat dissipation structure of the battery thermal management unit control box according to claim 1, characterized in that: The air inlet and outlet of the heat dissipation duct are respectively equipped with guide plates to optimize the airflow path.

8. The heat dissipation structure of the battery thermal management unit control box according to claim 1, characterized in that: The cooling fan is a low-noise fan.

9. The heat dissipation structure of the battery thermal management unit control box according to claim 1, characterized in that: A sealing element is provided at the connection between the heat dissipation duct and the condenser fan.

10. An electric locomotive, characterized in that: The battery thermal management unit control box is provided with a heat dissipation structure as described in any one of claims 1 to 9.

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