Battery pack

Abstract

A battery pack comprises a shell, a battery unit and a circuit board electrically connected with the battery unit, a containing cavity is defined by the shell, the battery unit and the circuit board are arranged in the containing cavity, the circuit board comprises a light-emitting lamp, the battery pack comprises a light guide part corresponding to the light-emitting lamp, and the light guide part is arranged in the containing cavity. The light guide part comprises a plurality of light guide columns, one ends of the light guide columns are located in the containing cavity, the light guide columns are arranged to guide out light emitted by the light-emitting lamp, and when the battery pack is horizontally placed on the horizontal plane, the projection of the circuit board on the horizontal plane does not intersect with the projection of the light guide part on the horizontal plane.

Description

Technical Field

[0001] This utility model relates to the field of charging, and specifically to a battery pack. Background Technology

[0002] In recent years, with the development of battery material technology, the application scope of lithium batteries has been greatly expanded, and they are now widely used in products such as power tools and cleaning equipment. In today's power tool industry, lithium battery packs are an unstoppable force as a new power source replacing traditional energy sources, and their applications are becoming increasingly widespread. The battery pack includes a housing, battery modules housed inside the housing, and a circuit board electrically connected to the battery modules. The battery modules store electrical energy. The circuit board has connecting wires, the other ends of which are electrically connected to several indicator lights. The housing has connecting holes through which the indicator lights protrude from the outer wall of the housing. Workers can determine the remaining battery power by observing the indicator lights; for example, when all indicator lights are lit, it indicates that the battery pack has sufficient remaining power.

[0003] However, during the current battery pack assembly process, the light guide column needs to be fixed with a bracket before being snapped onto the circuit board, which makes assembly difficult and greatly affects assembly efficiency. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of existing technologies by providing a fixing groove on the housing, allowing the light guide column to slide and be mounted on the battery pack housing without needing to assemble with or interfere with the circuit board, thus reducing assembly difficulty and providing a more convenient battery pack. This utility model is achieved through the following technical solution:

[0005] A battery pack includes a housing, battery cells, and a circuit board electrically connected to the battery cells. The housing forms a storage cavity, and the battery cells and the circuit board are disposed within the storage cavity. The circuit board includes a light-emitting lamp, and the battery pack includes a light guide corresponding to the light-emitting lamp. The light guide includes multiple light guide pillars, one end of which is located within the storage cavity and is configured to receive the light beam from the light-emitting lamp. When the battery pack is placed flat on a horizontal surface, the projection of the circuit board on the horizontal surface does not intersect with the projection of the light guide pillars on the horizontal surface. The circuit board and the light guide pillars are staggered, and the light guide pillars do not interfere with each other when installed, making assembly simpler.

[0006] Furthermore, the light guide post includes a first end face, a second end face, and a side face connecting the first end face and the second end face. The first end face and the side face are configured to receive light generated by the light-emitting lamp, and the second end face is exposed from the housing and configured to guide the light generated by the light-emitting lamp. The light of the light-emitting lamp is conducted through the light guide post, so that the light guide post becomes an indirect indicator and the light-emitting lamp becomes a direct indicator. This allows the user to know the on / off status of the light-emitting lamp by observing the on / off status of the light guide post, and thus know the remaining power of the battery pack.

[0007] Furthermore, the light guide includes a fixing part that is fixedly connected to the light guide post, configured to fix the light guide post to the housing. The fixing part is fixedly connected to the light guide post, and the light guide post is set on the fixing part to facilitate the installation of the light guide post.

[0008] Furthermore, the housing includes an opening communicating with the storage cavity, one end of the light guide column away from the light-emitting lamp is located in the opening, most of the light guide column is located inside the battery pack, and the light-emitting lamp is located inside the battery pack.

[0009] Furthermore, the opening includes a fixing groove, and the fixing part is slidably installed in the fixing groove to position the light guide post. By slidingly installing the fixing part with the housing through the fixing groove, it is not necessary to use tools to install and fix the fixing part, nor is it necessary to snap or interfere with the circuit board, which facilitates the installation and disassembly of the fixing part and the battery pack housing.

[0010] Furthermore, the housing includes a first housing and a second housing, and the fixing groove is disposed in the first housing to fix the fixing part, so that the fixing part is not easy to shake in the first housing.

[0011] Furthermore, the second housing includes a positioning post, and the first housing includes a positioning groove for the positioning post to be embedded in, so as to pre-fix the first housing and the second housing, which facilitates the subsequent fixed connection between the first housing and the second housing.

[0012] Furthermore, the first housing is provided with a plurality of fixing screws, which pass through the second housing and are threadedly connected to the second housing. The first housing and the second housing are connected by fixing screws, thereby realizing a detachable connection between the first housing and the second housing, which facilitates the installation of the circuit board, battery unit and fixing part.

[0013] Furthermore, there are no fewer than three light-emitting lamps, and the number of light guide columns is the same as the number of light-emitting lamps and they are set accordingly.

[0014] Furthermore, the battery pack includes a push-button switch, which is electrically connected to the circuit board.

[0015] Furthermore, the battery pack includes a pressing plate, and the opening includes a pressing plate groove. The pressing plate is slidably installed in the pressing plate groove and abuts against the pressing switch. The circuit board controls the light to emit light. By setting the pressing switch, when the light needs to work, the pressing plate is pressed to open the pressing switch so as to know the battery pack's power status. When it is not necessary to know the battery power status, the light is turned off, which can save energy.

[0016] The battery pack has a fixing groove on its housing, which allows the light guide column to be slidably mounted on the battery pack housing. Since the light guide column and the circuit board do not coincide on the horizontal plane, the light guide can be installed by tooling after the circuit board is assembled, which reduces the assembly difficulty, makes the operation more convenient, greatly improves the assembly efficiency, and provides a more convenient battery pack. Attached Figure Description

[0017] Figure 1 This is a perspective view of a battery pack according to an embodiment of this application.

[0018] Figure 2 for Figure 1 The image shows a three-dimensional view of the battery pack from another angle, in which the second housing is not shown.

[0019] Figure 3 for Figure 2 The image shows another perspective view of the battery pack.

[0020] Figure 4 for Figure 1 The diagram shows the position of the light guide column of the battery pack relative to the circuit board.

[0021] Figure 5 for Figure 1 A three-dimensional view of the light guide component of the battery pack shown.

[0022] Figure 6 for Figure 1 The image shows a perspective view of the first housing of the battery pack.

[0023] Figure 7 for Figure 1 The diagram shows a perspective view of the second housing of the battery pack. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] Combination Figures 1 to 5 A battery pack 100 includes a housing 101, a battery unit 102, and a circuit board 103 electrically connected to the battery unit 102. The housing 101 forms a storage cavity 104. The battery unit 102 and the circuit board 103 are disposed within the storage cavity 104. The circuit board 103 includes a light-emitting lamp 1. The battery pack 100 includes a light guide corresponding to the light-emitting lamp 1. The light guide includes a plurality of light guide pillars 2. One end of each light guide pillar 2 is located within the storage cavity 104, and the light guide pillar 2 is configured to receive the light beam from the light-emitting lamp 1. When the battery pack 100 is placed flat on a horizontal surface, the projection of the circuit board 103 on the horizontal surface does not intersect with the projection of the light guide pillar 2 on the horizontal surface. The circuit board 103 and the light guide pillar 2 are staggered. When the light guide pillar 2 is installed, the light guide pillar 2 does not interfere with the circuit board 103, making assembly simpler.

[0027] Preferably, the light guide post 2 includes a first end face 21, a second end face 22, and a side face 23 connecting the first end face 21 and the second end face 22. The first end face 21 and the side face 23 are configured to receive the light generated by the light-emitting lamp. The second end face 22 is exposed from the housing 101 and is configured to guide the light generated by the light-emitting lamp. The light of the light-emitting lamp 1 is conducted through the light guide post 2, so that the light guide post 2 becomes an indirect indicator and the light-emitting lamp 1 becomes a direct indicator. This allows the user to know the on / off status of the light-emitting lamp 1 by observing the on / off status of the light guide post 2, and thus know the remaining power of the battery pack 100.

[0028] The light guide includes a fixing part 3 fixedly connected to the light guide post 2, configured to fix the light guide post 2 to the housing. The fixing part 3 is fixedly connected to the light guide post 2, and the light guide post 2 is placed on the fixing part 3 for easy installation. The housing 101 includes an opening 4 communicating with the storage cavity 104. The end of the light guide post 2 away from the light-emitting lamp 1 is located in the opening 4. Most of the light guide post 2 is located inside the battery pack 100, and the light-emitting lamp 1 is located inside the battery pack 100.

[0029] Preferably, the opening 4 includes a fixing groove 5, and the fixing part 3 is slidably installed in the fixing groove 5 to position the light guide post 2. The fixing part 3 is slidably installed with the housing 101 through the fixing groove 5, so that the fixing part 3 does not need to be installed and fixed with tools, nor does it need to be snapped or interfered with the circuit board, which facilitates the installation and disassembly of the fixing part 3 and the housing 101 of the battery pack 100.

[0030] Combination Figure 6 and Figure 7 The housing 101 includes a first housing 6 and a second housing 7. A fixing groove 5 is disposed in the first housing 6 to fix the fixing part 3, preventing it from easily shaking within the first housing 6. The second housing 7 includes a positioning post 71, and the first housing 6 includes a positioning groove 61 for the positioning post 71 to be inserted, pre-fixing the first housing 6 and the second housing 7 to facilitate subsequent fixed connection between them. The first housing 6 is provided with a plurality of fixing screws 62, which pass through the second housing 7 and are threadedly connected to it. The first housing 6 and the second housing 7 are connected by the fixing screws 62, achieving a detachable connection between them, thereby facilitating the installation of the circuit board 103, the battery unit 102, and the fixing part 3.

[0031] Preferably, there are at least three light-emitting lamps 1, and the number of light guide columns 2 is the same as that of the light-emitting lamps 1 and they are correspondingly arranged. The battery pack 100 includes a push-button switch 8, which is electrically connected to the circuit board 103.

[0032] Preferably, the battery pack 100 includes a pressing piece 81, the opening 4 includes a pressing piece groove 82, the pressing piece 81 is slidably installed in the pressing piece groove 82, the pressing piece 81 abuts against the pressing switch 8, and the circuit board 103 controls the light lamp 1 to emit light. By setting the pressing switch 8, when the light lamp 1 needs to work, the pressing piece 81 is pressed to open the pressing switch 8 so as to know the power status of the battery pack 100. When it is not necessary to know the battery power status, the light lamp 1 is turned off, which can save energy.

[0033] The battery pack 100 has a fixing groove 5 on the housing 101, so that the light guide column 2 can be slidably installed on the housing 101 of the battery pack 100 without being assembled with the circuit board 103. Since the light guide column 2 and the circuit board 103 do not overlap on the horizontal plane, the light guide can be installed by tooling after the circuit board is assembled, without interfering with the circuit board 103, reducing the assembly difficulty, making the operation more convenient, greatly improving the assembly efficiency, and providing a more convenient battery pack 100.

[0034] It should be understood that the accompanying drawings illustrate exemplary embodiments in detail, and it should be understood that this application is not limited to the details or methods set forth in the specification or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered limiting.

[0035] In view of this specification, further modifications and alternative embodiments of various aspects of the 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 (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.) can be made without substantially departing from the novel teachings and advantages described herein. 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 invention.

[0036] Although the present application describes specific combinations of features in the appended claims, various embodiments of the 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.

[0037] 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 battery pack, comprising a housing, battery cells, and a circuit board electrically connected to the battery cells, wherein the housing forms a receiving cavity, and the battery cells and the circuit board are disposed within the receiving cavity, characterized in that: The circuit board includes a light source, and the battery pack includes a light guide corresponding to the light source. The light guide includes multiple light guide pillars, one end of which is located inside the receiving cavity. The light guide pillars are configured to guide the light emitted by the light source. When the battery pack is placed flat on a horizontal surface, the projection of the circuit board on the horizontal surface does not intersect with the projection of the light guide on the horizontal surface.

2. The battery pack as described in claim 1, characterized in that: The light guide post includes a first end face, a second end face, and a side face connecting the first end face and the second end face. The first end face and the side face are configured to receive light generated by the light-emitting lamp, and the second end face is exposed from the housing and configured to guide light generated by the light-emitting lamp. The light guide includes a fixing part that is fixedly connected to the light guide post, and is configured to fix the light guide post to the housing.

3. A battery pack as described in claim 2, characterized in that: The housing includes an opening communicating with the storage cavity, and the end of the light guide column away from the light-emitting lamp is located in the opening.

4. A battery pack as described in claim 3, characterized in that: The opening includes a fixing groove, and the fixing part is slidably installed in the fixing groove to position the light guide column.

5. A battery pack as described in claim 4, characterized in that: The housing includes a first housing and a second housing, and the fixing groove is disposed in the first housing.

6. A battery pack as described in claim 5, characterized in that: The second housing includes a positioning post, and the first housing includes a positioning groove into which the positioning post is inserted.

7. A battery pack as described in claim 5, characterized in that: The first housing is provided with a plurality of fixing screws, which pass through the second housing and are connected to the second housing by threads.

8. A battery pack as described in claim 7, characterized in that: The number of light-emitting lamps shall not be less than three.

9. A battery pack as described in claim 6, characterized in that: The battery pack includes a push-button switch, which is electrically connected to the circuit board.

10. A battery pack as described in claim 6, characterized in that: The battery pack includes a pressing plate, the opening includes a pressing plate groove, the pressing plate is slidably mounted in the pressing plate groove, the pressing plate abuts against the pressing switch, and the circuit board controls the light to emit light.

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