A heat dissipation device for outdoor portable power supply

Abstract

The utility model relates to a heat dissipation device for an outdoor portable power supply, belonging to the technical field of outdoor portable power supplies, wherein the outdoor portable mobile power supply comprises: a shell of the outdoor portable mobile power supply, and a BMS battery protection board, an inverter board and an MPPT controller located inside the shell, the BMS battery protection board is connected to the inverter board, the MPPT controller is also connected to the inverter board, and a plurality of power devices are arranged on the inverter board; the heat dissipation device comprises a radiator and an air compressor, a plurality of the power devices are connected to the radiator, an air flow slit channel is arranged on the radiator, the air flow slit channel is connected to the output end of the air compressor, and an exhaust port is arranged at one end of the air flow slit channel away from the air compressor. The utility model aims to solve the technical problem in the prior art that the battery core temperature is too high when the power supply is working, affecting the performance of the battery core.

Description

Technical Field

[0001] The utility model belongs to the technical field of outdoor portable power supplies, and in particular relates to a heat dissipation device used for outdoor portable power supplies. Background Art

[0002] Outdoor portable power bank is a large capacity portable power bank that is easy to carry. With the popularity of electronic products, the use of outdoor portable power banks has become more frequent. They are often used for outdoor camping and emergency rescue.

[0003] The conversion efficiency of the entire power system of existing outdoor portable mobile power supplies is not 100%, and some electrical energy is converted into heat energy for consumption. The shell of an outdoor portable power supply is a relatively closed space, and heat is dissipated through the air outlet. When the discharge power is large, the generated heat does not have time to dissipate to the outside of the shell, and accumulates inside the shell, causing the temperature inside the shell to rise. When the temperature exceeds the appropriate operating temperature of the battery cell (0-40°C), it will affect the performance of the battery cell. In order to protect the battery cell, the system will reduce the discharge power, thereby affecting the user experience.

[0004] Therefore, the battery cell must be kept in a reasonable operating temperature range, that is, to reduce heat accumulation and dissipate it to the outside of the shell in time. Utility Model Content

[0005] The utility model provides a heat dissipation device for an outdoor portable power supply, aiming to solve the technical problem in the prior art that the battery core temperature is too high when the power supply is working, affecting the performance of the battery core.

[0006] The technical solution of the utility model to solve the above technical problems is as follows: a heat dissipation device for an outdoor portable power supply, the outdoor portable power supply comprises: a shell and an inverter board located inside the shell, and a plurality of power devices are arranged on the inverter board; the heat dissipation device comprises a radiator and an air compressor, and the plurality of power devices are closely attached to the radiator, and an air flow slit channel is arranged on the radiator, one end of the air flow slit channel is connected to the output end of the air compressor, and the other end of the air flow slit channel is provided with an exhaust port. The beneficial effect of the utility model is that the air compressor is placed in front of the radiator, and the rotation of its turbine blades is used to inhale air from the air inlet and pressurize it to form high-pressure air, and the high-pressure air is discharged through the exhaust port of the air flow slit channel. The high-pressure air flow flows closely to the inner wall, and at the same time, the surrounding air flow is driven to blow in the exhaust direction because of the existence of the Coanda effect, that is, a negative pressure area is generated on the radiator side by a high-speed air jet to suck the surrounding air. The effect of blowing is achieved, thereby dissipating heat and cooling the interior of the outdoor portable mobile power supply.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the cross-section of the heat sink described above is an inverted U-shaped structure.

[0009] The beneficial effect of adopting the above further solution is that by setting the shape of the heat sink to an inverted U-shaped structure, the surrounding air flow can be better driven, thereby achieving heat dissipation and cooling inside the outdoor portable mobile power supply.

[0010] Furthermore, the cross-section of the heat sink is a ring structure.

[0011] The beneficial effect of adopting the above further solution is that by setting the shape of the radiator to a ring structure, the surrounding air flow can be better driven, thereby achieving heat dissipation and cooling inside the outdoor portable mobile power supply.

[0012] Furthermore, the above-mentioned air flow slit channel is located on the inner wall of the radiator.

[0013] The beneficial effect of adopting the above further solution is that the air flow slit channel is arranged on the inner wall of the radiator so that the high-speed air flow flows closely against the inner wall, thereby driving the surrounding air flow.

[0014] Furthermore, the above-mentioned multiple power devices are attached and connected to the outer surface of the heat sink.

[0015] The beneficial effect of adopting the above further solution is: the power device that mainly generates heat is attached to the outer surface of the heat sink to collect the heat.

[0016] Furthermore, the above-mentioned multiple power devices are evenly distributed on the outer surface of the heat sink.

[0017] The beneficial effect of adopting the above further solution is that multiple power devices are evenly distributed, thereby avoiding the accumulation of heat sources and causing damage to the power devices due to excessive heat.

[0018] Furthermore, the housing is provided with heat dissipation holes for dissipating heat.

[0019] The beneficial effect of adopting the above further solution is that by providing heat dissipation holes on the outer shell, the air flow inside the outer shell is facilitated, making the air flow smoother.

[0020] Furthermore, the heat dissipation hole is directly opposite to the air outlet.

[0021] The beneficial effect of adopting the above further solution is that the heat dissipation hole is just opposite to the exhaust port, and the gas discharged from the exhaust port can be quickly and smoothly discharged from the shell, thereby achieving rapid airflow interaction.

[0022] Furthermore, a heat absorbing layer is provided on the outer surface of the heat sink, and the plurality of power devices are attached and connected to the heat absorbing layer.

[0023] The beneficial effect of adopting the above further solution is that by providing a heat absorption layer, the heat generated by the power device can be more easily collected.

[0024] Furthermore, the material of the heat absorbing layer is a thermally stable nanomaterial.

[0025] The beneficial effect of adopting the above further scheme is that the thermally stable nanomaterial can dissipate heat or absorb heat through the infrared radiation effect. When the material is lower than the outside temperature, it absorbs heat; when the material is higher than the outside temperature, it dissipates heat.

[0026] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A top view of a heat dissipation device provided by an embodiment of the utility model;

[0028] Figure 2 A side view of a heat dissipation device provided by an embodiment of the utility model;

[0029] Figure 3 This is a front view of a heat dissipation device provided in one embodiment of the utility model.

[0030] Figure numerals: 1. Radiator; 2. Power device; 3. Air flow slit channel; 4. Air compressor. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] The following specific embodiments are used to describe in detail the technical solution of the present invention and how the technical solution of the present invention solves the above technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The following embodiments of the present invention will be described in conjunction with the accompanying drawings.

[0033] like Figure 1-Figure 3As shown, this embodiment provides a heat dissipation device for an outdoor portable power supply, which includes: a shell of an outdoor portable mobile power supply, and a BMS battery protection board, an inverter board and an MPPT controller located inside the shell, the BMS battery protection board is connected to the inverter board, the MPPT controller is also connected to the inverter board, and a plurality of power devices 2 are arranged on the inverter board; the heat dissipation device includes a radiator 1 and an air compressor 4, a plurality of the power devices 2 are connected to the radiator 1, an air flow slit channel 3 is arranged on the radiator 1, the air flow slit channel 3 is connected to the output end of the air compressor 4, and an exhaust port is arranged at one end of the air flow slit channel 3 away from the air compressor 4.

[0034] Among them, the air compressor 4 is placed in front of the radiator 1, and the rotation of its turbine blades is used to suck air from the air inlet and pressurize it to form high-pressure air, which is discharged through the exhaust port of the air flow slit channel 3. The high-pressure air flow flows closely to the inner wall and drives the surrounding air flow due to the Coanda effect to achieve blowing in the exhaust direction, that is, a negative pressure area is generated on the side of the radiator 1 by a high-speed air jet to suck the surrounding air. The effect of blowing is achieved, thereby dissipating heat and cooling the interior of the outdoor portable mobile power supply.

[0035] Optionally, the cross-section of the radiator 1 is an inverted U-shaped structure.

[0036] Among them, by setting the shape of the heat sink 1 to an inverted U-shaped structure, the surrounding air flow can be better driven, thereby achieving heat dissipation and cooling inside the outdoor portable mobile power supply.

[0037] Optionally, the cross-section of the radiator 1 is a ring-shaped structure.

[0038] Among them, by setting the shape of the radiator 1 to a ring structure, the surrounding air flow can be better driven, thereby achieving heat dissipation and cooling inside the outdoor portable mobile power supply.

[0039] Optionally, the air flow slit channel 3 is located on the inner wall of the radiator 1 .

[0040] The air flow slit channel 3 is arranged on the inner wall of the heat sink 1 so that the high-speed air flow flows closely along the inner wall, thereby driving the surrounding air flow.

[0041] Optionally, a plurality of power devices 2 are attached and connected to the outer surface of the heat sink 1 .

[0042] The power device 2 that mainly generates heat is attached to the outer surface of the heat sink 1 to collect the heat.

[0043] Optionally, a plurality of power devices 2 are evenly distributed on the outer surface of the heat sink 1 .

[0044] The multiple power devices 2 are evenly distributed to avoid the accumulation of heat sources, which may lead to excessive heat and damage to the power devices 2 .

[0045] Optionally, the housing is provided with heat dissipation holes for dissipating heat.

[0046] Among them, by starting heat dissipation holes on the shell, the air flow inside the shell is facilitated, making the air flow more unobstructed.

[0047] Optionally, the heat dissipation hole is directly opposite to the air exhaust port.

[0048] Among them, the heat dissipation hole is just opposite to the exhaust port, and the gas discharged from the exhaust port can be quickly and smoothly discharged from the outer casing, realizing rapid airflow interaction.

[0049] Optionally, a heat absorbing layer is provided on the outer surface of the heat sink 1, and the plurality of power devices 2 are attached and connected to the heat absorbing layer.

[0050] Wherein, by providing a heat absorption layer, the heat generated by the power device 2 can be more easily collected.

[0051] Optionally, the material of the heat absorbing layer is a thermally stable nanomaterial.

[0052] Among them, thermally stable nanomaterials can dissipate or absorb heat through the infrared radiation effect. When the material is lower than the outside temperature, it absorbs heat; when it is higher than the outside temperature, it dissipates heat.

[0053] Working principle:

[0054] During the operation of the outdoor portable power supply, the power device 2 generates heat, and the heat generated is conducted to the radiator 1 through the heat absorption layer. The radiator 1 may be an aluminum block radiator 1, which is an inverted U-shaped structure as a whole. A temperature detector may be provided on the aluminum block radiator 1. When the temperature reaches the preset temperature, the air compressor 4 is started to dissipate heat and cool down. The air compressor 4 may also be started to dissipate heat and cool down at the beginning of the operation of the outdoor portable power supply. After the air compressor 4 is started, the air compressor 4 absorbs and compresses air to form high-pressure air, and the high-pressure air is controlled to be discharged to the air flow slit channel 3, and finally discharged through the exhaust port. The exhaust port is a crack, and the purpose is that the high-pressure air flow flows closely to the inner wall and drives the surrounding air flow due to the existence of the Coanda effect to achieve blowing in the exhaust direction, that is, a negative pressure area is generated on the radiator 1 side by a high-speed air jet to suck the surrounding air. The effect of blowing is achieved, thereby dissipating heat and cooling the interior of the outdoor portable mobile power supply.

[0055] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) by each other to form a technical solution.

Claims

1. A heat dissipation device for an outdoor portable power supply, the outdoor portable power supply comprising: A shell and an inverter board located inside the shell, wherein a plurality of power devices are arranged on the inverter board; it is characterized in that: the heat dissipation device comprises a radiator and an air compressor, a plurality of the power devices are closely attached to the radiator, an air flow slit channel is arranged on the radiator, one end of the air flow slit channel is connected to the output end of the air compressor, and an exhaust port is arranged at the other end of the air flow slit channel.

2. A heat dissipation device for an outdoor portable power source according to claim 1, characterized in that: The cross section of the radiator is an inverted U-shaped structure.

3. The heat dissipation device for an outdoor portable power source according to claim 1, characterized in that: The cross section of the radiator is a ring structure.

4. A heat dissipation device for an outdoor portable power source according to claim 2 or 3, characterized in that: The air flow slit channel is located on the inner wall of the radiator.

5. A heat dissipation device for an outdoor portable power source according to claim 2 or 3, characterized in that: A plurality of power devices are attached and connected to the outer surface of the heat sink.

6. A heat dissipation device for an outdoor portable power source according to claim 5, characterized in that: A plurality of power devices are evenly distributed on the outer surface of the heat sink.

7. The heat dissipation device for an outdoor portable power source according to claim 1, characterized in that: The shell is provided with heat dissipation holes for dissipating heat.

8. The heat dissipation device for an outdoor portable power source according to claim 7, characterized in that: The heat dissipation hole is directly opposite to the air outlet.

9. The heat dissipation device for an outdoor portable power source according to claim 5, characterized in that: The outer surface of the heat sink is provided with a heat absorbing layer, and the plurality of power devices are attached and connected to the heat absorbing layer.

10. The heat dissipation device for an outdoor portable power source according to claim 9, characterized in that: The material of the heat absorbing layer is a thermally stable nano material.

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