Liquid cooling control panel of electric tool and liquid cooling electric tool

Abstract

The utility model aims to solve the problem that a control panel of an existing brushless electric tool dissipates heat through air cooling or natural heat dissipation, and the heat dissipation efficiency is low. The utility model provides a liquid cooling control panel of an electric tool and a liquid cooling electric tool, the control panel comprises a circuit board and a heat dissipation plate, and the heat dissipation plate is fixedly arranged on a power component on one side of the circuit board; the heat dissipation plate comprises two heat dissipation vertical plates, a heat dissipation transverse plate and a water passing pipeline; the heat dissipation vertical plates are fixedly arranged on a power component of the circuit board, a set distance is arranged between the two heat dissipation vertical plates, a heat dissipation transverse plate is fixedly arranged between the two heat dissipation vertical plates, a water passing pipeline penetrating through the heat dissipation transverse plate is arranged on the heat dissipation transverse plate, and the water passing pipeline and the heat dissipation transverse plate are integrally formed; flushing flowing water in the electric tool is utilized, and the heat dissipation efficiency of the control panel through the heat dissipation plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a liquid-cooled control board for power tools and a liquid-cooled power tool. Background Technology

[0002] Most power tools rely on electric motors to rotate at high speeds to perform cutting or drilling operations. For example, an electric grooving machine is used to cut straight grooves in concrete or brick walls using a high-speed rotating blade, for burying pipes or wires, as shown in patent publication number CN119609859A. During operation, high-speed friction, such as the friction between the blade and a hard wall or floor during cutting, generates a significant amount of heat and dust. Therefore, it's necessary to rinse the blade area with water to reduce dust dissipation and heat generation, ensuring efficient operation. Furthermore, the motor operates at high power during operation, and the motor's drive control circuit also generates considerable heat due to Joule's law. Traditional methods mostly utilize the motor's cooling airflow path, drawing in air through the drive control circuitry for simultaneous air cooling. However, traditional airflow cooling is inefficient, especially in hot indoor environments where indoor air is drawn in, further reducing efficiency. Furthermore, incorrect operator angles can cause water and cutting material mixed with the slurry to enter the machine, covering the air-cooled heatsink. Prolonged continuous operation can also disrupt the motor's control circuitry. Therefore, a more efficient heat dissipation control board and power tool are needed. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a liquid-cooled control board for power tools and a liquid-cooled power tool.

[0004] To solve the above problems, the present invention adopts the following solution:

[0005] A liquid-cooled control board for an electric tool includes a circuit board and a heat sink, wherein the heat sink is fixedly mounted on a power component on one side of the circuit board; the heat sink includes two vertical heat sinks, a horizontal heat sink, and a water pipe; the vertical heat sinks are fixedly mounted on the power component of the circuit board, the two vertical heat sinks are spaced apart by a predetermined distance, and a horizontal heat sink is fixedly mounted between the two vertical heat sinks, with a water pipe passing through the horizontal heat sink, the water pipe being integrally formed with the horizontal heat sink.

[0006] Furthermore, a tubular through hole is provided in the middle part of one side of the heat dissipation plate to serve as a water pipe.

[0007] Furthermore, the heat dissipation plate is also provided with vertically raised heat dissipation ridges, which are located on the side of the heat dissipation plate away from the circuit board.

[0008] Furthermore, a set distance is set between the heat dissipation horizontal plate and the circuit board, so that the two heat dissipation vertical plates, the heat dissipation horizontal plate, and the circuit board form a cavity to accommodate some of the electronic components on the circuit board.

[0009] Furthermore, the heat sink is shaped like an "I", with the vertical heat sinks on both sides integrated with the horizontal heat sinks and water pipes.

[0010] Furthermore, a heat dissipation wing is provided above the heat dissipation vertical plate, extending away from the heat dissipation vertical plate on the other side, which increases the heat dissipation area and improves the efficiency of fixed power components during production and installation.

[0011] Furthermore, power components for driving the slotted motor are provided on both sides of the heat sink, and the power components are set close to the heat sink vertical plate.

[0012] Furthermore, the power components include IGBT transistors and rectifier bridges.

[0013] An electric tool, including the control panel described above.

[0014] The beneficial effects of this utility model are as follows:

[0015] By setting up water pipes that pass through the heat dissipation plate in the heat sink and forming them as a single unit, the water flow from the power tools is fully utilized to achieve liquid cooling for the internal electronic components, thereby improving the heat dissipation efficiency of the control board through the heat sink.

[0016] By setting up heat dissipation ridges, along with the strip-shaped protrusions on them, the contact area with the atmospheric environment is increased, thereby improving the efficiency of air cooling or natural heat dissipation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the control board for Example 1;

[0018] Figure 2 This is an exploded view of the control board in Example 1.

[0019] Explanation of the symbols in the attached diagram: Circuit board 1, IGBT tube 11, rectifier bridge 12, heat sink 2, heat sink vertical plate 21, heat sink horizontal plate 22, water pipe 23, heat sink protrusion 24, strip protrusion 25, heat sink fin 26. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] Example 1:

[0023] like Figure 1 and Figure 2 As shown, a liquid-cooled control board for an electric tool, taking a grooving machine as an example, includes a circuit board 1 and a heat sink 2, wherein the heat sink 2 is fixedly disposed on one side of the circuit board 1; the circuit board 1 is connected to the motor in the grooving machine for driving the motor to work. It should be noted that in this example, the circuit components and component connections of the circuit board 1 adopt existing technology; the heat sink 2 includes two symmetrically arranged vertical heat sinks 21 and a horizontal heat sink 22, as well as a water pipe 23; the sides of the vertical heat sinks 21 are fixedly disposed on the power components of the circuit board 1, and the two vertical heat sinks 21 are spaced apart by a set distance. A horizontal heat sink 22 is fixedly disposed between the two vertical heat sinks 21, and a water pipe 23 is disposed inside the horizontal heat sink 22, passing through the horizontal heat sink 22. The water pipe is integrally formed with the horizontal heat sink 22; by setting the water pipe 23, on the one hand, the water cooling effect is achieved, which greatly improves the heat dissipation efficiency, and on the other hand, it can be combined with the traditional motor cooling air to achieve a combination of dual heat dissipation methods. It should be noted that the thickness of the heat dissipation horizontal plate 22 is much greater than the thickness of the heat dissipation vertical plate 21. The purpose is to enhance the heat transfer capacity of the heat dissipation horizontal plate 22, and also to facilitate the installation of a thicker water pipe 23 through the heat dissipation horizontal plate 22.

[0024] The heat dissipation horizontal plate 22 has a tubular through hole in the middle, serving as a water pipe 23. Half of the water pipe 23 is embedded in the heat dissipation horizontal plate 22, while the other half is a raised arched structure, forming a complete tubular through hole. In this example, both ends of the water pipe 23 are also equipped with adapters for connecting external hoses, enabling connection with other water hoses and forming a complete slotted flushing water flow channel. The water pipe 23 is integrally formed with the heat dissipation horizontal plate 22 and the vertical plate 21, avoiding gaps between the water pipe 23 and the heat dissipation plate 2, improving heat transfer efficiency, and facilitating the removal of heat through the liquid flowing within the water pipe 23. The heat dissipation horizontal plate 22 is also provided with vertically protruding heat dissipation ridges 24, located on the side of the heat dissipation horizontal plate 22 away from the circuit board 1. Several strip-shaped protrusions 25 extending along the length direction are also provided on both sides of the heat dissipation ridges 24, increasing the heat dissipation area and improving the efficiency of natural heat dissipation.

[0025] The heat dissipation horizontal plate 22 is spaced at a set distance from the circuit board 1, so that the two heat dissipation vertical plates 21, the heat dissipation horizontal plate 22, and the circuit board 1 form a cavity to accommodate some of the taller circuit components on the circuit board 1, including relays, safety devices, etc., because in this cavity, on the one hand, the water flow in the heat dissipation horizontal plate 22 carries away the heat, and on the other hand, the two ends of the cavity are open, so it can also serve as a channel for air cooling.

[0026] The heat sink 2 is in the shape of an "I" and the heat sink vertical plates 21 and heat sink horizontal plates 22 on both sides are integrally formed, which increases the tightness and consistency of the overall structure and improves the heat transfer efficiency between them. In this example, the heat sink 2 is made of aluminum alloy, which has a high heat transfer efficiency.

[0027] Above the heat dissipation vertical plate 21, a heat dissipation wing 26 is also provided, extending away from the heat dissipation vertical plate 21 on the other side. This is also to increase the surface area in contact with the air and improve the efficiency of natural heat dissipation. On the other hand, the top of the power component can also fit close to the bottom of the heat dissipation wing, which makes it convenient to install and fix the power component on the heat dissipation plate. It can also increase the contact area between the power component and the heat dissipation plate, improve heat dissipation efficiency, and also improve production efficiency.

[0028] The heat sink 2 has power components for driving the slotted motor on both sides. In this example, the power components include six IGBT tubes 11 and a rectifier bridge 12. The six IGBT tubes 11 and the rectifier bridge 12 are respectively attached to both sides of the heat sink vertical plate 21, located on the side of the two heat sink vertical plates 21 that are far apart from each other.

[0029] An electric tool, including the control panel described above.

[0030] During implementation, by setting up a water pipe 23 that passes through the interior of the heat dissipation plate 22 in the heat dissipation plate 2, the water flow from the rinsing groove is fully utilized to achieve liquid cooling and improve the heat dissipation efficiency of the control board through the heat dissipation plate 2; by setting up heat dissipation ridges 24, in conjunction with the strip-shaped protrusions on them, the contact area with the atmospheric environment is increased, thereby improving the efficiency of air cooling or natural heat dissipation.

[0031] The above description is merely a specific example of this utility model and does not constitute any limitation on this utility model. Obviously, those skilled in the art, after understanding the content and principle of this utility model, may make various modifications and changes in form and details without departing from the principle and structure of this utility model. However, these modifications and changes based on the concept of this utility model are still within the protection scope of the claims of this utility model.

Claims

1. A liquid-cooled control board for an electric tool, comprising a circuit board (1) and a heat sink (2), wherein the heat sink (2) is fixedly disposed on a power component on one side of the circuit board (1); characterized in that, The heat sink (2) includes two vertical heat sinks (21), a horizontal heat sink (22), and a water pipe (23); the vertical heat sinks (21) are fixedly mounted on the power components of the circuit board (1), and the two vertical heat sinks (21) are spaced apart by a set distance; a horizontal heat sink (22) is fixedly mounted between the two vertical heat sinks (21), and a water pipe (23) is mounted on the horizontal heat sink (22) and passes through the horizontal heat sink (22), and the water pipe is integrally formed with the horizontal heat sink.

2. The liquid cooling control board of an electric power tool according to claim 1, wherein A tubular through hole is provided in the middle part of one side of the heat dissipation plate (22) as a water pipe (23).

3. The liquid cooling control board of an electric power tool according to claim 2, wherein The heat dissipation plate (22) is also provided with a vertically protruding heat dissipation strip (24), which is located on the side of the heat dissipation plate (22) away from the circuit board (1).

4. The liquid cooling control board of an electric power tool according to claim 2, wherein The heat dissipation horizontal plate (22) is spaced at a set distance from the circuit board (1); so that the two heat dissipation vertical plates (21), the heat dissipation horizontal plate (22), and the circuit board (1) form a cavity to accommodate some electronic components on the circuit board (1).

5. The liquid cooling control board of an electric power tool according to claim 2, wherein The heat sink (2) is in the shape of an "I" and the heat sink vertical plates (21) on both sides are integrally formed with the heat sink horizontal plates (22).

6. The liquid cooling control board of an electric power tool according to claim 1, wherein Above the heat dissipation vertical plate (21), there is also a heat dissipation wing (26) extending in a direction away from the heat dissipation vertical plate (21) on the other side.

7. The liquid cooling control board of an electric power tool according to claim 1, wherein The heat sink (2) is provided with power components for driving the brushless motor on both sides. The power components are attached to the heat sink vertical plate (21). The power components are also fixedly connected to the circuit board (1).

8. The liquid-cooled control board for a power tool according to claim 7, characterized in that, The power components include IGBT transistors (11) and rectifier bridges (12).

9. A liquid-cooled power tool characterized by comprising: Includes the control panel as described in any one of claims 1 to 8.

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