Control panel for electric tool and electric tool

Abstract

The utility model provides a control panel applied to an electric tool. The control panel comprises a circuit board, and a main controller, a capacitor, a plurality of MOS transistors, a switch port and a power supply chip which are arranged on the circuit board, the circuit board is provided with a first surface and a second surface which are oppositely arranged, the main controller and the power supply chip are arranged on the first surface, the capacitor, the MOS tubes and the switch port are arranged on the second surface, each MOS tube comprises a pin welded to the circuit board, the MOS tube with the pin extending in the first direction is defined as a first MOS tube, and the MOS tube with the pin extending in the second direction is defined as a second MOS tube. The MOS tube of which the pin extends along a second direction is defined as a second MOS tube, and the first direction is perpendicular to the second direction; the two first MOS transistors and the second MOS transistor enclose a space, and the capacitor part is located in the space. According to the control panel provided by the invention, the capacitor is abdicated through the second MOS tube, so that the capacitor can be compactly arranged on the first surface of the circuit board, and meanwhile, the main controller with relatively large heat productivity is arranged on the second surface with relatively large space, so that good heat dissipation performance is ensured.

Description

Technical Field

[0001] This utility model relates to the field of control, specifically to a control board for power tools and a power tool. Background Technology

[0002] The control board is a core component of power tools, primarily used to control power components such as motors, including their speed and direction of rotation. Existing controllers integrate various electronic components onto a printed circuit board to achieve these functions. Due to cost constraints, power tool circuit boards are typically small, making it difficult to accommodate a wide variety of electronic components, especially power components that require efficient heat dissipation, necessitating ample surrounding space for optimal cooling. Utility Model Content

[0003] The purpose of this application is to overcome the shortcomings of the existing technology and provide a control board and power tool with a reasonable layout and good heat dissipation effect.

[0004] This application provides a control board for power tools, including a circuit board and a main controller, a capacitor, a plurality of MOSFETs, a switch port, and a power chip disposed on the circuit board; the circuit board has a first surface and a second surface arranged opposite to each other, the main controller and the power chip are disposed on the first surface, and the capacitor, MOSFETs, and switch port are disposed on the second surface. Each MOSFET includes pins soldered to the circuit board, a MOSFET with pins extending along a first direction is defined as a first MOSFET, and a MOSFET with pins extending along a second direction is defined as a second MOSFET, the first direction being perpendicular to the second direction; two first MOSFETs and one second MOSFET enclose a space, and the capacitor portion is located within the space.

[0005] Furthermore, a plurality of first MOS transistors are arranged in a first column, and a portion of the second MOS transistors extends into the first column, thereby enclosing the space.

[0006] Furthermore, the circuit board includes a first edge, a second edge, a third edge, and a fourth edge connected in sequence, with the first edge and the third edge facing each other, and the second edge and the fourth edge facing each other; the capacitor extends to the first edge of the circuit board from the side away from the second MOS transistor.

[0007] Furthermore, a plurality of first MOS transistors are arranged in a second column, the first column and the second column extending between the second edge and the fourth edge of the circuit board.

[0008] Furthermore, the control board also includes a function switch, the switch port being located between the function switch and the MOSFET.

[0009] Furthermore, in the first direction, the main controller and the function switch at least partially overlap; in the second direction, the main controller and the function switch are staggered.

[0010] Furthermore, the main controller, MOSFET, switch port, and power chip are soldered to the circuit board via surface mount technology, and the capacitor is soldered to the circuit board via through-hole technology.

[0011] In addition, this application also provides an electric tool, including a housing, a motor disposed in the housing, a battery pack, and a control board as described above, wherein the control board is electrically connected to the motor and the battery pack.

[0012] This application provides a control board in which a second MOSFET makes way for a capacitor, allowing the capacitor to be compactly mounted on the first surface of the circuit board, while the main controller, which generates a lot of heat, is mounted on the second surface with more space to ensure good heat dissipation performance. Attached Figure Description

[0013] Figure 1 This is a perspective view of a control panel according to an embodiment of this application.

[0014] Figure 2 yes Figure 1 A perspective view of the control panel from another angle. Detailed Implementation

[0015] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0016] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0017] Combination Figures 1 to 2 This application discloses a control board for power tools, comprising a circuit board 1 and a main controller 2, capacitors 3, multiple MOSFETs 4, a switch port 5, and a power chip 6 disposed on the circuit board. The circuit board 1 has a first surface 11 and a second surface 12 arranged opposite to each other. The main controller 2 and the power chip 6 are disposed on the first surface 11, and the capacitors 3, MOSFETs 4, and switch ports 5 are disposed on the second surface 12. The circuit board 1 includes a first edge 101, a second edge 102, a third edge 103, and a fourth edge 104 connected in sequence. The first edge 101 and the third edge 103 are arranged opposite to each other, and the second edge 102 and the fourth edge 104 are arranged opposite to each other. The main controller 2 controls the signal output to the motor based on received information; the capacitors 3 are used for filtering and energy storage; the switch ports 5 are used to receive user input signals or sensor signals; and the power chip 6 is used to drive the power supply.

[0018] The main controller 2, MOSFET 4, switch port 5, and power chip 6 are soldered to the circuit board using surface mount technology (SMT), while the capacitor 3 is soldered to the circuit board using through-hole soldering (THT). Through-hole soldering offers the advantage of high reliability and is suitable for larger capacitors 3; surface mount technology offers advantages such as high precision and automation, and is suitable for other electronic components.

[0019] Each MOSFET 4 includes a pin 40 soldered to the circuit board 1. A MOSFET with pins extending along a first direction X is defined as a first MOSFET 41, and a MOSFET with pins extending along a second direction Y is defined as a second MOSFET 42. The first direction X is perpendicular to the second direction Y. The two first MOSFETs 41 and one second MOSFET 42 are arranged in a triangle to form a space 400. The capacitor 3 is partially located within the space 400, thereby saving space and achieving a more compact structure. It should be noted that although the first surface 11 has other spaces, these spaces cannot be arbitrarily changed for purposes such as heat dissipation and avoiding electrical interference.

[0020] Optionally, a plurality of first MOSFETs 41 are arranged in a first column 41A, and a portion of the second MOSFETs 42 extend into the first column 41A, thereby forming the space 400. A plurality of first MOSFETs 41 are arranged in a second column 41B, and the first column 41A and the second column 41B extend between the second edge 102 and the fourth edge 104 of the circuit board.

[0021] The control board also includes a function switch 7, with the switch port 6 located between the switch 7 and the MOSFET 4, and the switch port 6 being closer to the MOSFET. In the first direction X, the main controller 2 and the function switch 7 at least partially overlap; in the second direction Y, the main controller 2 and the function switch 7 are staggered, partially overlapping in one direction and staggered in the other, making the spatial layout more reasonable while ensuring heat dissipation performance.

[0022] On the other hand, this application also provides an electric tool, which includes a housing, a motor disposed in the housing, a battery pack, and a control board as described above. The control board is electrically connected to the motor and the battery pack and is used to control the start-stop and working status of the motor.

[0023] This application provides a control board in which a second MOSFET makes way for a capacitor, allowing the capacitor to be compactly mounted on the first surface of the circuit board, while the main controller, which generates a lot of heat, is mounted on the second surface with more space to ensure good heat dissipation performance.

[0024] In view of this specification, further modifications and alternative embodiments of various aspects of the present invention will be apparent to those skilled in the art. Therefore, this description should be interpreted as illustrative only. The configurations and arrangements shown in the various exemplary embodiments are merely illustrative. Although only some embodiments have been described in detail in this disclosure, many modifications can be made without substantially departing from the novel teachings and advantages described herein (e.g., variations in the size, dimensions, structure, shape and proportions of various elements, values ​​of parameters, mounting arrangements, use of materials, color, orientation, etc.). Some elements shown as integrally formed may be constructed from multiple parts or elements, the positions of elements may be reversed or otherwise changed, and the nature or number or position of discrete elements may be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm, or method steps may be changed or reordered. Other substitutions, modifications, alterations, and omissions may be made to the design, operating conditions, and arrangements of the various exemplary embodiments without departing from the scope of the present invention.

[0025] Although the present application describes specific combinations of features in the appended claims, various embodiments of the present invention relate to any combination of any features described herein, whether or not such combinations are currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.

[0026] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the accompanying drawings, are drawn to scale. Actual measurements in the drawings will disclose the relative dimensions, angles, and scales of the various exemplary embodiments. The various exemplary embodiments extend to a wide range around absolute and relative dimensions, angles, and scales that can be determined from the accompanying drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the accompanying drawings. Furthermore, actual dimensions not explicitly stated in this specification can be determined by combining the scales of the dimensions measured in the accompanying drawings with the explicit dimensions stated in this specification.

Claims

1. A control board for power tools, comprising a circuit board, and a main controller, a capacitor, a plurality of MOS tubes, a switch port and a power chip disposed on the circuit board; characterized in that, the circuit board has a first surface and a second surface disposed oppositely, the main controller and the power chip are disposed on the first surface, and the capacitor, the MOS tubes and the switch port are disposed on the second surface, each MOS tube comprises a pin soldered to the circuit board, the MOS tube with the pin extending in a first direction is defined as a first MOS tube, and the MOS tube with the pin extending in a second direction is defined as a second MOS tube, the first direction being perpendicular to the second direction; two first MOS tubes and one second MOS tube enclose a space, and the capacitor is partially located in the space.

2. The control panel of claim 1, wherein: a plurality of first MOS tubes are arranged in a first column, and the second MOS tube partially extends into the first column to enclose the space.

3. The control panel of claim 2, wherein: the circuit board comprises a first edge, a second edge, a third edge and a fourth edge disposed in sequence, the first edge and the third edge being disposed oppositely, and the second edge and the fourth edge being disposed oppositely; the capacitor extends to the first edge of the circuit board away from one side of the second MOS tube.

4. The control panel of claim 3, wherein: a plurality of first MOS tubes are arranged in a second column, and the first column and the second column extend between the second edge and the fourth edge of the circuit board.

5. The control panel of claim 1, wherein: the control board further comprises a function switch, and the switch port is located between the function switch and the MOS tubes.

6. The control panel of claim 5, wherein: in the first direction, the main controller and the function switch at least partially overlap; in the second direction, the main controller and the function switch are disposed staggeredly.

7. The control panel of claim 1, wherein: the main controller, the MOS tubes, the switch port and the power chip are soldered to the circuit board by surface soldering, and the capacitor is soldered to the circuit board by through-hole soldering.

8. A power tool characterized by comprising: the power tool comprises a housing, a motor, a battery pack and the control board as claimed in any one of claims 1 to 7, and the control board is electrically connected to the motor and the battery pack.

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