A power supply structure

Abstract

The present invention provides a power supply structure comprising a housing, a battery cell and a circuit board disposed within the housing, and a support frame suitable for mounting and positioning the battery cell and circuit board. The battery cell has first and second ends, opposite along its length, positioned and connected to the support frame. First and second electrical connectors are disposed at electrodes at the first and second ends of the battery cell, respectively, extending laterally outward, bending, attaching to the outer surface of the support frame, and extending toward the circuit board for connection. This technical solution provides for safe electrical use.

Description

Technical Field

[0001] The invention relates to a power supply structure. Background Art

[0002] To increase the versatility of power tools and expand their working range beyond the limitations of socket locations, many cordless power tools have emerged on the market. These tools offer portability, ease of operation, and diverse functionality. They significantly reduce labor intensity, improve efficiency, and mechanize manual operations, making them widely used in construction, housing design, automotive, machinery, electricity, bridge construction, gardening, and other fields. Summary of the Invention

[0003] The object of the present invention is to provide a power supply structure with safe electricity use.

[0004] The present invention provides a power supply structure, comprising a housing, a battery cell and a circuit board disposed within the housing, and further comprising a support frame adapted to mount and position the battery cell and the circuit board; the battery cell having first and second opposite ends along its length direction, respectively, being positioned and connected to the support frame;

[0005] The first electrical connector and the second electrical connector are respectively arranged at the electrodes at the first end and the second end of the battery cell, and extend outwardly, bend, adhere to the outer surface of the support frame, and extend toward the circuit board to connect to the circuit board.

[0006] Furthermore, a gap is provided between the circuit board and the supporting frame, and the first electrical connector and the second electrical connector respectively include an extended connecting section located at the gap, and the extended connecting section extends along the length direction of the battery cell and is connected to the circuit board at the tail end.

[0007] Furthermore, the extended connecting section extends along the outer surface of the supporting frame.

[0008] Furthermore, the tail ends of the extended connecting sections at the opposite ends connected to the circuit board are respectively located on opposite sides of the circuit board.

[0009] Compared with the prior art, the beneficial technical effects of the present invention are:

[0010] The above structural design makes the first electrical connector and the second electrical connector spaced apart from the surface of the battery cell. The first electrical connector and the second electrical connector are connected to the battery cell electrodes and are obviously made of conductive materials. The supporting skeleton in this technical solution is made of insulating material. Therefore, the conductive first electrical connector and the second electrical connector are separated from the surface of the battery cell by insulating material. Therefore, even if the surface of the battery cell is damaged, a short circuit accident will not occur, thereby playing a role of safety insulation protection.

[0011] Another object of the present invention is to provide a power supply structure that is easy to assemble.

[0012] A power supply structure includes a housing, a battery cell and a circuit board arranged inside the housing, and is characterized in that:

[0013] The power supply structure further includes a support frame suitable for mounting and positioning the battery cell and the circuit board; the battery cell has first and second ends opposite to each other along its length, respectively, positioned and connected to the support frame;

[0014] a third electrical connector, which is disposed at one end of the circuit board and is configured to be electrically connected to an electrical device so that power from the battery cell can be provided to the electrical device through the third electrical connector;

[0015] The support frame is provided with a mounting position corresponding to the third electrical connector.

[0016] Furthermore, the third electrical connector is a pin terminal, which includes at least two pin connection posts suitable for connecting to the circuit board, and the support frame extends upward to form a protrusion that matches the pin terminal.

[0017] Furthermore, the pin terminal is provided with a lug on an extended protruding portion close to the support frame, and the lug is fixedly connected to the circuit board and / or the support frame.

[0018] Furthermore, the third electrical connector includes a USB interface, and the circuit board is provided with a mounting notch corresponding to the USB interface.

[0019] Compared with the prior art, the beneficial technical effects of the present invention are:

[0020] The above structural design uses a support frame to simply install and position the circuit board and the battery cell, and connects the electrodes at both ends of the battery cell to the circuit board. At the same time, the support frame is configured with an installation position corresponding to the third electrical connector. The overall structural layout is simple and the assembly is easy and convenient.

[0021] Yet another object of the present invention is to provide a power supply structure that can supply power to different electrical devices.

[0022] The present invention provides a power supply structure, comprising a housing, a battery cell and a circuit board arranged inside the housing, characterized in that:

[0023] The power supply structure further includes a support frame suitable for mounting and positioning the battery cell and the circuit board; the battery cell has first and second ends opposite to each other along its length, respectively, positioned and connected to the support frame;

[0024] a third electrical connector, which is disposed at one end of the circuit board and is configured to be electrically connected to an electrical device so that power from the battery cell can be provided to the electrical device through the third electrical connector;

[0025] The third electrical connector includes a pin terminal and a USB interface arranged at the same end, a notch suitable for positioning, installing and connecting the USB interface is formed on one side of the pin terminal, and the USB interface is adapted to be installed in the notch and connected to the circuit board.

[0026] Furthermore, the pin terminal and the USB interface respectively include an extended protruding section, the extended protruding section is provided with a sealing sleeve adapted thereto, and the sealing sleeve is clamped between the third electrical connector and the inner wall of the shell.

[0027] Furthermore, the sealing sleeve is provided with a protruding edge portion on one side close to the inner wall of the shell, and the inner wall of the shell is correspondingly provided with an edge groove adapted thereto, and the edge portion is inserted into the edge groove.

[0028] Furthermore, the circuit board is spaced apart from the supporting frame, and the circuit board is provided with a mounting notch corresponding to the USB interface. The USB interface is mounted in the mounting notch and its upper surface is substantially flush with the upper surface of the circuit board.

[0029] Furthermore, the circuit board and the supporting frame are spaced apart, and a minimum distance between the two is H, where H≤2mm.

[0030] Compared with the prior art, the beneficial technical effects of the present invention are:

[0031] These pin terminals are electrically connected to external electrical equipment via pin-type connectors connected to a circuit board. These pin-type connectors include at least one positive and one negative discharge electrode for positive and negative discharge, and may also include a signal terminal for communication with the electrical equipment and signal transmission. These pin terminals are typically used in power tools, which typically have relatively high discharge currents.

[0032] Moreover, the pin terminal adopts an integrated injection molding method to encapsulate the pin-type connecting column in the plastic body, which can effectively prevent dust and water.

[0033] In addition, the configured USB interface is generally used to power 3C electrical devices or electronic devices around 3C. It is preferred to use type-c, and the battery cell can also be charged via type-c. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 : Exploded view of the power supply structure of a specific embodiment of the present invention;

[0036] Figure 2 : A cross-sectional view of the power supply structure of a specific embodiment of the present invention;

[0037] Figure 3 : Exploded view of the power supply structure of a specific embodiment of the present invention;

[0038] Figure 4 : A schematic diagram of the power supply structure of a specific embodiment of the present invention;

[0039] Figure 5 : Schematic diagram of the support skeleton structure of a specific embodiment of the present invention;

[0040] Figure 6 : Schematic diagram of the exploded structure of the power supply structure according to a specific embodiment of the present invention;

[0041] Figure 7 : Schematic diagram of the exploded structure of the power supply structure according to a specific embodiment of the present invention;

[0042] Figure 8 : Cross-sectional view of the shell of a specific embodiment of the present invention. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] [Example 1]

[0045] like Figure 1 and Figure 2 As shown, a power supply structure 100 includes a housing 10, a battery cell 20 and a circuit board 30 disposed inside the housing 10, and the power supply structure 100 further includes a support frame 40 suitable for mounting and positioning the battery cell 20 and the circuit board 10; the battery cell 20 is positioned and connected to the support frame 40 at first and second ends thereof, which are opposite along its length direction;

[0046] The first electrical connector 50 and the second electrical connector 60 are respectively arranged at the electrodes at the first end and the second end of the battery cell 20 , and extend laterally outward, bend and adhere to the outer surface of the support frame 40 , and extend toward the circuit board 30 to connect to the circuit board 30 .

[0047] Specifically, refer to Figure 3 As shown, the battery cell 20 is positioned in the support frame 40, and the support frame 40 is provided with connection openings O1 and O2 corresponding to the two end electrodes of the battery cell 20, respectively. The starting ends of the first electrical connector 50 and the second electrical connector 60 correspond to the electrical connection of the two end electrodes of the battery cell 20 at the connection openings O1 and O2, respectively. Specifically, the first electrical connector 50 and the second electrical connector 60 are made of metal nickel sheets, which are spot-welded to the two end electrodes of the battery cell 20. Then, the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, and are bent, and then are attached to the outer surface of the support frame 40 to extend toward the circuit board 30 and be connected thereto. The first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, and are bent to form a laterally extending bent section, as shown in FIG. Figure 3 Shown in area A.

[0048] The above structural design makes the first electrical connector 50 and the second electrical connector 60 spaced apart from the surface of the battery cell. The first electrical connector 50 and the second electrical connector 60 are connected to the electrodes of the battery cell 20 and are obviously made of conductive materials. In this technical solution, the support frame 40 is made of insulating material. Therefore, the conductive first electrical connector 50 and the second electrical connector 60 are separated from the surface of the battery cell 20 by insulating material. Therefore, even if the surface of the battery cell 20 is damaged, a short circuit accident will not occur, thereby playing a role of safety insulation protection.

[0049] In addition, since the power supply structure 100 is also suitable for power tools, and the use of power tools often involves large vibrations, the first electrical connector 50 and the second electrical connector 60 are respectively arranged in the outward lateral direction. Extending, protruding, and bending to form a transversely extended bent section can also effectively attenuate vibrations, thereby preventing the large vibrations involved in the use of power tools from affecting the internal structure.

[0050] like Figure 2 As shown, a gap L is provided between the circuit board 30 and the supporting frame 40, and the first electrical connector 50 and the second electrical connector 60 respectively include extended connecting sections (50a, 60a) located at the gap, and the extended connecting sections (50a, 60a) extend along the length direction of the battery cell 20 and are connected to the circuit board 30 at the tail end.

[0051] Specifically, the support frame 40 is provided with installation grooves 40a and 40b corresponding to the extended connection ends 50a and 60a. The installation grooves 40a and 40b extend along the outer surface of the support frame 40. The extended connection ends 50a and 60a are respectively installed in the installation grooves 40a and 40b, and are equipped with positioning columns and positioning holes to perform installation and positioning.

[0052] Providing the mounting grooves 40a and 40b on the support frame 40 can effectively reduce the overall height of the power supply.

[0053] In addition, the extended connecting sections 50 a and 60 a extend along the outer surface of the support frame 40 , and the extended connecting sections 50 a and 60 a are insulated from the surface of the battery cell 20 by the support frame 40 .

[0054] Moreover, the tail ends of the extended connecting sections (50a, 60a) at the opposite ends connected to the circuit board 30 are located on the opposite sides of the circuit board 30, for details, see Figure 3 As shown, the tail end of the extended connecting section 50a extends along direction n toward one side of the circuit board 30 and is connected to the circuit board 30, while the tail end of the extended connecting section 60a extends along direction m toward the other opposite side of the circuit board 30 and is connected to the circuit board 30. In this way, the extended connecting sections 50a and 60a are separated from each other at the tail end portions, ensuring a safe electrical connection.

[0055] [Example 2]

[0056] like Figure 4 As shown, a power supply structure 100 includes a housing 10, a battery cell 20 and a circuit board 30 disposed inside the housing 10, wherein the power supply structure 100 further includes a support frame 40 suitable for mounting and positioning the battery cell 20 and the circuit board 30; the battery cell 20 is positioned and connected to the support frame 40 at a first end and a second end thereof, which are opposite along its length direction;

[0057] Specifically, refer to Figure 5 As shown, the support frame 40 has a curved surface 40d adapted to the outer surface of the battery cell 20, and the curved surface 40d extends along the length direction of the battery cell 20, and end limit plates 40e and 40f are provided at both ends of the length direction of the battery cell 20. The limit plates 40e and 40f, and the curved surface 40d cooperate to constitute the positioning area of ​​the battery cell 20, and cooperate with the shell 10 to fix the battery cell 20 within the positioning area.

[0058] The third electrical connector 70 is provided at one end of the circuit board 30. The third electrical connector 70 is configured to be electrically connected to the electrical device so that the power from the battery cell can be provided to the electrical device through the third electrical connector 70. Correspondingly, the support frame 40 is provided with a mounting position 40c corresponding to the third electrical connector 70. Figure 4 shown.

[0059] More specifically, refer to Figure 6 and Figure 7 As shown, the third electrical connector 70 is a pin terminal 70a, which includes at least two pin connection columns 70a-1 suitable for connecting to the circuit board 30, and the support frame 40 extends upward to form a protrusion to form a mounting area 40c matching the pin terminal 70a.

[0060] The extended protrusion portion of the pin terminal 70a close to the support frame 40 is provided with a lug 70a-2. In this embodiment, the lug 70a-2 is fixedly connected to the circuit board 30. Of course, it can also be fixedly connected to the support frame 40.

[0061] In addition, the third electrical connector 70 may further include a USB interface 70 b , and the circuit board 30 is provided with a mounting notch 30 a corresponding to the USB interface 70 b .

[0062] Pin terminal 70a electrically connects to external electrical equipment via pin connector 70a-1, which is connected to circuit board 30. Pin connector 70a-1 includes at least one positive and one negative discharge electrode for positive and negative discharge, and may also include a signal terminal for communication with the electrical equipment and signal transmission. Pin terminal 70a is typically used in power tools, which typically have a relatively high discharge current.

[0063] In addition, the configured USB interface 70b is generally used to power 3C electrical equipment or electronic equipment around 3C. Type-c is preferably used, and the battery cell 20 can also be charged via type-c.

[0064] [Example 3]

[0065] like Figure 4 and Figure 6 ,as well as Figure 7 As shown, a power supply structure 100 includes a housing 10, a battery cell 20 and a circuit board 30 disposed inside the housing 10, and the power supply structure 100 further includes a support frame 40 suitable for mounting and positioning the battery cell 20 and the circuit board 30; the battery cell 20 is positioned and connected to the support frame 40 at a first end and a second end thereof, which are opposite along its length direction;

[0066] A third electrical connector 70 is provided at one end of the circuit board 30 , and the third electrical connector 70 is configured to be electrically connected to an electrical device, so that power from the battery cell can be provided to the electrical device through the third electrical connector 70 ;

[0067] The third electrical connector 70 includes a pin terminal 70a and a USB interface 70b arranged at the same end. A slot 70a-3 suitable for positioning and installing the USB interface 70b is formed on one side of the pin terminal 70a. The USB interface 70b is adapted to be installed in the slot 70a-3 and connected to the circuit board 30.

[0068] Pin terminal 70a electrically connects to external electrical equipment via pin connector 70a-1, which is connected to circuit board 30. Pin connector 70a-1 includes at least one positive and one negative discharge electrode for positive and negative discharge, and may also include a signal terminal for communication with the electrical equipment and signal transmission. Pin terminal 70a is typically used in power tools, which typically have a relatively high discharge current.

[0069] Moreover, the pin terminal 70a adopts an integrated injection molding method to encapsulate the pin connecting column 70a-1 in the plastic body, which can effectively prevent dust and water.

[0070] In addition, the configured USB interface 70b is generally used to power 3C electrical equipment or electronic equipment around 3C. Type-c is preferably used, and the battery cell 20 can also be charged via type-c.

[0071] In addition, the pin terminal 70a and the USB interface 70b respectively include extended protruding sections (70a-4, 70b-1), and the extended protruding sections (70a-4, 70b-1) are sleeved with a sealing sleeve 80 adapted thereto, and the sealing sleeve 80 is clamped between the third electrical connector 70 and the inner wall of the shell 10.

[0072] With this arrangement, on the one hand, the electrical port of the pin-type connecting column 70a-1 is sealed against dust and water through the pin-type terminal 70a, and the installation gap of the third electrical connector 70 is sealed with the sealing sleeve 80, which can effectively prevent water from entering, and the waterproof grade can reach the IPX7 standard.

[0073] In addition, reference Figure 7 and Figure 8 The sealing sleeve 80 is provided with a protruding edge portion 80a on the side close to the inner wall of the shell 10, and the inner wall of the shell 10 is correspondingly provided with a side groove 10a adapted thereto, and the edge portion 80a is inserted into the side groove 10a; so that the sealing sleeve 80 is clamped in the gap between the third electrical connector 70 and the inner wall of the shell 10 to effectively seal.

[0074] The circuit board 30 is spaced apart from the support frame 40 . The circuit board 30 is provided with a mounting notch 30 a corresponding to the USB interface 70 b . The USB interface 70 b is mounted in the mounting notch 30 a and its upper surface is substantially flush with the upper surface of the circuit board 30 .

[0075] The circuit board 30 and the supporting frame 40 are spaced apart, and the minimum distance between them is H, where H≤2mm.

[0076] The minimum spacing H ensures that the USB interface 70b has sufficient installation space and remains substantially flush with the upper surface of the circuit board 30 to reduce the overall height of the power supply.

[0077] In addition, it is worth mentioning that:

[0078] The circuit board 30 is supported on the support frame 40 at intervals, and the minimum distance between the circuit board 30 and the support frame 40 is not greater than 2 mm; by setting the distance H, a certain heat dissipation effect and electronic installation space are effectively guaranteed between the circuit board 3 and the battery cell 2.

[0079] Furthermore, the width of the circuit board 30 is Y, the diameter of the battery cell 20 is D, and the width Y is 95% or less of the width D. In this embodiment, the width Y of the circuit board 30 is 20 mm, and the diameter D of the battery cell 20 is 21 mm.

[0080] In addition, the length of the battery cell 20 is L3, the length of the battery pack 100 is L4, and L4 is 1.3 times or less of L3; the diameter of the battery cell is D, the height of the battery pack is M, and M is 1.8 times or less of D; in a specific embodiment, the length of the battery cell 20 is 70 mm, and the length of the battery pack 100 is 82 mm; the diameter of the battery cell 20 is 21 mm, and the height of the battery pack 100 is 36 mm; the above-mentioned structural arrangement can effectively ensure that the battery pack of this embodiment has a compact structure, is easy to carry when used as a mobile power source, and can be applied to various small power tools.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply structure comprising a housing, a battery cell and a circuit board disposed inside the housing, characterized in that: The power supply structure further includes a support frame suitable for mounting and positioning the battery cell and the circuit board; the battery cell has first and second ends opposite to each other along its length, respectively, positioned and connected to the support frame; a first electrical connector and a second electrical connector, which are respectively arranged at the electrodes at the first end and the second end of the battery cell, and extend laterally outward, bend, adhere to the outer surface of the support frame, and extend toward the circuit board to connect to the circuit board; a third electrical connector, which is disposed at one end of the circuit board and is configured to be electrically connected to an electrical device so that power from the battery cell can be provided to the electrical device through the third electrical connector; The support frame is provided with a mounting position corresponding to the third electrical connector; A gap is provided between the circuit board and the supporting frame. The first electrical connector and the second electrical connector respectively include an extended connecting section located at the gap. The extended connecting section extends along the length direction of the battery cell and is connected to the circuit board at the tail end. The tail ends of the extended connecting sections at opposite ends connected to the circuit board are respectively located on opposite sides of the circuit board.

2. The power supply structure according to claim 1, wherein: The extended connecting section extends along the outer surface of the supporting frame.

3. The power supply structure according to claim 1, wherein: The third electrical connector is a pin terminal, which includes at least two pin connection posts suitable for connecting to the circuit board. The support frame extends upward to form a protrusion that matches the pin terminal.

4. The power supply structure according to claim 3, wherein: The pin terminal is provided with a lug on an extended protruding portion close to the support frame, and the lug is fixedly connected to the circuit board and / or the support frame.

5. The power supply structure according to claim 1, wherein: The third electrical connector includes a USB interface, and a mounting notch corresponding to the USB interface is provided on the circuit board.

6. The power supply structure according to claim 1, wherein: The third electrical connector includes a pin terminal and a USB interface arranged at the same end, a notch suitable for positioning, installing and connecting the USB interface is formed on one side of the pin terminal, and the USB interface is adapted to be installed in the notch and connected to the circuit board.

7. The power supply structure according to claim 6, characterized in that: The pin terminal and the USB interface respectively include an extended protruding section, and the extended protruding section is provided with a sealing sleeve adapted thereto, and the sealing sleeve is clamped between the third electrical connector and the inner wall of the housing.

8. The power supply structure according to claim 7, characterized in that: The sealing sleeve is provided with a protruding edge portion on one side close to the inner wall of the shell, and the inner wall of the shell is correspondingly provided with an edge groove adapted thereto, and the edge portion is inserted into the edge groove.

9. The power supply structure according to claim 6, characterized in that: The circuit board is spaced apart from the supporting frame. The circuit board is provided with a mounting notch corresponding to the USB interface. The USB interface is mounted in the mounting notch and its upper surface is substantially flush with the upper surface of the circuit board.

10. The power supply structure according to claim 9, characterized in that: The circuit board and the supporting frame are spaced apart, and a minimum distance between the two is H, where H is less than or equal to 2 mm.

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