A battery pack

Abstract

The application provides a battery pack for powering an electric device, the battery pack comprising a docking structure for docking with the electric device and a locking structure for locking to the electric device, the docking structure comprising two oppositely arranged guide rails extending along a mounting direction of the battery pack to the electric device, each guide rail comprising a first guide surface, a second guide surface and a third guide surface, the first guide surface connecting the second guide surface and the third guide surface; the first guide surface comprising a first sub-guide surface and a second sub-guide surface, the distance between the first sub-guide surfaces of the two guide rails being greater than the distance between the second sub-guide surfaces of the two guide rails; the second guide surface of each guide rail comprising a third sub-guide surface and a fourth sub-guide surface, the distance from the third sub-guide surface to the third guide surface being less than the distance from the fourth sub-guide surface to the third guide surface, the connection between the plurality of sub-guide surfaces of the guide rails and the connecting portion of the electric device being able to closely fit, so that the connection of the two is stable and reliable, the structure is stable, safe and reliable.

Description

Technical Field

[0001] This application relates to the field of power tools, and more particularly to a battery pack. Background Technology

[0002] With the development of technology, power tools have gradually replaced manual tools and entered thousands of households. Lithium-ion power tools are more convenient than tools that use AC power. Lithium-ion power tools have a battery connection part on the body of the power tool. The battery pack is connected and locked to the power tool at the battery connection part. The battery pack is equipped with two guide rails that are slidably connected to the battery connection part. The electrical terminals located inside the power tool housing are connected to the terminal slots on the battery pack, so that the battery pack provides power to the power tool.

[0003] Because the battery pack is slidably connected to the power tool housing, it is prone to shaking after locking. This shaking is transmitted to the handle, which can cause discomfort to the operator and poses a risk of use, potentially causing injury to the operator. Utility Model Content

[0004] This application provides a battery pack that solves the above-mentioned technical problems, and its structure is simple and safe and reliable.

[0005] Specifically, this application provides a battery pack for powering an electric device. The battery pack includes a docking structure for connecting to the electric device and a locking structure for locking to the electric device. The docking structure includes two opposing guide rails extending along the installation direction of the battery pack and the electric device. Each guide rail includes a first guide surface, a second guide surface, and a third guide surface. The first guide surface connects the second guide surface and the third guide surface. The first guide surface includes a first sub-guide surface and a second sub-guide surface. The distance between the first sub-guide surfaces of the two guide rails is greater than the distance between the second sub-guide surfaces of the two guide rails. Each second guide surface of the guide rail includes a third sub-guide surface and a fourth sub-guide surface. The distance from the third sub-guide surface to the third guide surface is less than the distance from the fourth sub-guide surface to the third guide surface. The battery pack can be tightly fitted to the connection part of the electric device through the multiple sub-guide surfaces of the guide rails, making the mechanical connection stable and reliable, thereby ensuring the reliability of the electrical connection.

[0006] Furthermore, the first guide surface includes a first connecting surface, which is obliquely intersecting the first sub-guide surface and the second sub-guide surface. The first sub-guide surface and the second sub-guide surface form a step in the installation direction, which can increase the contact area between the connecting part of the electric device and the first guide surface, thereby making the installation of the battery pack more stable and less prone to shaking.

[0007] Furthermore, the first sub-guide surface is parallel to the second sub-guide surface.

[0008] Furthermore, the battery pack includes a second connecting surface, which is obliquely intersecting the third sub-guide surface and the fourth sub-guide surface respectively. The third sub-guide surface and the fourth sub-guide surface form a step in the installation direction, which can increase the contact area between the connecting part of the electric device and the second guide surface, thereby making the installation of the battery pack more stable and less prone to shaking.

[0009] Furthermore, the third sub-guiding surface is parallel to the fourth sub-guiding surface.

[0010] Furthermore, in the direction of battery pack installation to electric device, the first connecting surface is further forward than the second connecting surface. The electric device connection part first increases pressure on the first guide surface and then increases pressure on the second guide surface. When the battery pack moves to the end of its stroke along the installation direction, the electric device installation part is subjected to pressure from the first guide surface and the second guide surface.

[0011] Furthermore, the battery pack includes two corresponding guide protrusions. In the direction in which the battery pack is installed to the electric device, the guide protrusions are positioned further forward relative to the guide rail. The guide protrusions are configured to guide the connection between the battery pack and the electric device connection portion.

[0012] Furthermore, the distance between the two guide protrusions is less than the distance between the two first sub-guide surfaces and the distance between the two second sub-guide surfaces. The closer distance between the two guide protrusions makes it less likely for the battery pack to interfere with the connection of the electric device, and makes installation easier.

[0013] Furthermore, the docking structure includes a terminal groove located between two guide protrusions.

[0014] Furthermore, the locking structure includes a locking member and an elastic member that drives the locking member to protrude from the docking structure, the locking member passing through the docking structure and configured to lock to the electric device.

[0015] In this application, the battery pack can be tightly fitted to the connection part of the electric device through multiple sub-guide surfaces of the guide rail, so that the mechanical connection between the two is stable and reliable, thereby ensuring the reliability of the electrical connection. The structure is robust and safe. Attached Figure Description

[0016] Figure 1 This is a perspective view of a battery pack according to an embodiment of this application.

[0017] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the battery pack from another angle.

[0018] Figure 3 yes Figure 1A magnified view of a portion of the battery pack guide rail section.

[0019] Figure 4 yes Figure 1 The battery pack shown is a top view.

[0020] Figure 5 yes Figure 4 The image shows a cross-sectional view of the battery pack. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] Please combine Figures 1 to 5This application provides a battery pack 100 for powering an electric device. The battery pack 100 includes a docking structure 101 for docking with an electric device (not shown) and a locking structure 102 for locking to the electric device. The docking structure 101 includes two guide rails 103 arranged opposite to each other, extending along the installation direction of the electric device in the battery pack 100. Each guide rail 103 includes a first guide surface 1, a second guide surface 2, and a third guide surface 3. The first guide surface 1 connects the second guide surface 2 and the third guide surface 3. The first guide surface 1 includes a first sub-guide surface and a second sub-guide surface 12. The distance between the first sub-guide surfaces of the two guide rails 103 is greater than the distance between the second sub-guide surfaces 12 of the two guide rails 103. The second guide surface 2 of each guide rail 103 includes a third sub-guide surface 21 and a fourth sub-guide surface 22. The distance from the third sub-guide surface 21 to the third guide surface 3 is less than the distance from the fourth sub-guide surface 22 to the third guide surface 3. The battery pack 100 can be tightly fitted to the connection part of the electric device through multiple sub-guide surfaces of the guide rail 103, so that the mechanical connection between the two is stable and reliable, thereby ensuring the reliability of the electrical connection.

[0024] Preferably, the first guide surface 1 includes a first connecting surface 13, which is obliquely intersecting the first sub-guide surface and the second sub-guide surface 12. The first sub-guide surface and the second sub-guide surface 12 form a step in the installation direction, which increases the contact area between the connecting part of the electric device and the first guide surface 1, thereby making the installation of the battery pack 100 more stable and less prone to shaking. The first sub-guide surface is parallel to the second sub-guide surface 12.

[0025] Preferably, the battery pack 100 includes a second connecting surface 23, which is obliquely intersecting the third sub-guide surface 21 and the fourth sub-guide surface 22. The third sub-guide surface 21 and the fourth sub-guide surface 22 form a step in the installation direction, which increases the contact area between the connecting part of the electric device and the second guide surface 22, thereby making the installation of the battery pack 100 more stable and less prone to shaking. The third sub-guide surface 21 is parallel to the fourth sub-guide surface 22.

[0026] Combination Figure 3 In the direction in which the battery pack 100 is installed to the electric device, the first connecting surface 13 is further forward than the second connecting surface 23. The electric device connection part first increases pressure on the first guide surface 1 and then increases pressure on the second guide surface 2. When the battery pack 100 moves to the end of its stroke along the installation direction, the electric device installation part is subjected to pressure from the first guide surface 1 and the second guide surface 2.

[0027] Combination Figure 4The battery pack 100 includes two corresponding guide protrusions 4. In the direction in which the battery pack 100 is installed to the electric device, the guide protrusions 4 are further forward than the guide rail 103. The guide protrusions 4 are configured to guide the connection between the battery pack 100 and the electric device connection part.

[0028] Preferably, the distance between the two guide protrusions 4 is less than the distance between the two first sub-guide surfaces and the distance between the two second sub-guide surfaces 12. The closer distance between the two guide protrusions 4 makes it less likely for the battery pack 100 to interfere with the connection part of the electric device, and facilitates installation. The docking structure 101 includes a terminal groove 5, which is located between the two guide protrusions 4.

[0029] Preferably, the locking structure 102 includes a locking member 66 and an elastic member (not shown) that drives the locking member 66 to protrude from the docking structure 101. The locking member 66 passes through the docking structure 101 and is configured to lock to the electric device.

[0030] In this application, the battery pack 100 can be tightly fitted to the connection part of the electric device through multiple sub-guide surfaces of the guide rail 103, so that the mechanical connection between the two is stable and reliable, thereby ensuring the reliability of the electrical connection. The structure is solid and safe.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A battery pack for supplying power to an electric device, the battery pack comprising a docking structure for engaging with the electric device and a locking structure for locking to the electric device, the docking structure comprising two opposing guide rails extending along the mounting direction of the battery pack to the electric device, characterized in that: Each of the guide rails includes a first guide surface, a second guide surface, and a third guide surface, wherein the first guide surface connects the second guide surface and the third guide surface; The first guide surface includes a first sub-guide surface and a second sub-guide surface, and the distance between the first sub-guide surfaces of the two guide rails is greater than the distance between the second sub-guide surfaces of the two guide rails; The second guide surface of each guide rail includes a third sub-guide surface and a fourth sub-guide surface, wherein the distance from the third sub-guide surface to the third guide surface is less than the distance from the fourth sub-guide surface to the third guide surface.

2. The battery pack according to claim 1, characterized in that, The first guide surface includes a first connecting surface, which is obliquely intersecting the first sub-guide surface and the second sub-guide surface.

3. The battery pack according to claim 2, characterized in that, The first sub-guide surface is parallel to the second sub-guide surface.

4. The battery pack according to claim 3, characterized in that, The battery pack includes a second connecting surface, which is obliquely intersecting the third sub-guide surface and the fourth sub-guide surface, respectively.

5. The battery pack according to claim 4, characterized in that, The third sub-guide surface is parallel to the fourth sub-guide surface.

6. The battery pack according to claim 4, characterized in that, In the direction in which the battery pack is installed to the electric device, the first connecting surface is further forward than the second connecting surface.

7. The battery pack according to claim 1, characterized in that, The battery pack includes two corresponding guide protrusions, which are positioned further forward relative to the guide rail in the direction in which the battery pack is installed onto the electric device.

8. The battery pack according to claim 7, characterized in that, The distance between the two guide bumps is less than the distance between the two first sub-guide surfaces and the distance between the two second sub-guide surfaces.

9. The battery pack according to claim 7, characterized in that, The docking structure includes a terminal slot located between two guide protrusions.

10. The battery pack according to claim 1, characterized in that, The locking structure includes a locking member and an elastic member that drives the locking member to protrude from the docking structure. The locking member passes through the docking structure and is configured to lock to the electric device.

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