Battery pack

Abstract

The utility model relates to the field of energy storage equipment, and particularly discloses a battery pack which comprises a framework, a shell at least partially wrapping the outer side of the framework, a battery module installed on the framework and a circuit board electrically connected with the battery module, the circuit board is electrically connected with a signal light source, and a light guide plate is arranged on one side of the signal light source. The electric quantity or the working condition of the battery pack can be displayed through the change of the color of the signal light source, in the display process of the signal light source, light rays of the signal light source are scattered to the light guide strip for long-distance light guide, and in the use process of the battery pack, a user can visually and clearly know the electric quantity and the working condition of the battery pack through the light rays scattered by the light guide strip; the framework is provided with the positioning part, the light guide plate is installed at the positioning part, when the light guide plate is installed, the upper shell of the battery pack covers the surface of the framework and compresses and positions the light guide plate, and the light guide plate is convenient to assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage devices, in particular to a battery pack. BACKGROUND

[0002] In the rich use scenarios of power tools, the performance and convenience of the battery pack as the core power supply component directly affect the overall performance of the power tool.

[0003] During use, the battery pack needs to display the remaining power or working condition through a signal light source. Through understanding of related technologies, the signal light source of the battery pack has the problems of low display intensity or unclear display when displaying light, and the user cannot intuitively understand the remaining power or working condition of the battery pack. CONTENT OF THE UTILITY MODEL

[0004] The purpose of at least one specific embodiment of the present application is to solve the defects in the prior art and provide a battery pack.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A battery pack comprises:

[0007] a framework;

[0008] a shell at least partially covering the outside of the framework;

[0009] a battery module mounted on the framework;

[0010] a circuit board electrically connected to the battery module;

[0011] the circuit board is electrically connected to a signal light source, and a light guide plate is mounted on the battery pack to guide the signal light source;

[0012] The framework is provided with a positioning portion, the light guide plate is mounted at the positioning portion, and the shell comprises an upper shell which covers the surface of the framework and tightly positions the light guide plate.

[0013] Further, the signal light source is an RGB three-color light suitable for displaying the power or working condition of the battery pack.

[0014] Further, the shell further comprises a left shell and a right shell, and the left shell, the right shell and the upper shell all cover the outside of the framework.

[0015] Further, after the left shell and the right shell cover the outside of the framework, the battery module can be covered; and after the upper shell covers the outside of the framework, the circuit board can be covered.

[0016] Further, after the left shell and the right shell cover the outside of the framework, they are clamped on both sides of the light guide plate.

[0017] Further, at least part of the skeleton is not covered by the shell.

[0018] Further, the light guide plate comprises a light guide part and a light emitting part, the skeleton is provided with a mounting surface, the mounting surface is located at one side of the positioning part, the mounting surface is suitable for supporting the light emitting part, and the light guide part faces the signal light source.

[0019] Further, the number of the light guide plates is two, and the two light guide plates are installed at the front end and the rear end of the battery pack.

[0020] Further, the upper shell is provided with a pressing part, after the upper shell covers the outer side of the skeleton, the pressing part covers the surface of the light emitting part, and the pressing part and the mounting surface form relative support above and below the light emitting part.

[0021] Further, the two ends of the light guide plate extend towards the left shell and the right shell respectively.

[0022] The battery pack can display the power or working condition through the color change of the signal light source, the light of the signal light source is scattered to the light guide strip during the display process, the light is guided at a long distance, and the user can intuitively and clearly understand the power and working condition of the battery pack through the scattered light of the light guide strip during the use of the battery pack.

[0023] In addition, the skeleton is provided with a positioning part, the light guide plate is installed at the positioning part, the upper shell of the battery pack covers the surface of the skeleton and tightly positions the light guide plate during the installation of the light guide plate, and the light guide plate is convenient to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a structural schematic diagram of the battery pack in some embodiments of the present application.

[0026] Figure 2 It is an assembly schematic diagram of the battery pack in some embodiments of the present application.

[0027] Figure 3 It is a top view schematic diagram of the battery pack in some embodiments of the present application.

[0028] Figure 4 It is Figure 3 a sectional view along line A-A.

[0029] Figure 5 For Figure 4 B area in the enlarged view. DETAILED DESCRIPTION

[0030] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0031] Referring to Figure 1 , Figure 2 A battery pack 100, comprising a framework 10, a shell 20 at least partially wrapped outside the framework 10, a battery module 30 installed on the framework 10, a circuit board 40 electrically connected with the battery module 30, wherein the circuit board 40 is electrically connected with a signal light source 50, and a light guide plate 60 is arranged on one side of the signal light source 50 for light guiding of the signal light source 50; the signal light source 50 is an RGB three-color lamp, and the signal light source 50 can present rich and varied color changes by skillfully combining three basic colors of red, green and blue. This feature makes it very suitable for directly displaying the power or working condition of the battery pack.

[0032] When the battery pack has sufficient power, it can be displayed as green; when the power is at a medium level, it presents blue; and when the power is low, it is warned with red. In terms of working condition, it may display a certain color stably in normal operation state, and if abnormal working condition occurs, the light will flicker or switch to a specific color combination to timely convey the state information of the battery pack to the user, greatly facilitating the user to grasp the real-time condition of the battery pack.

[0033] During the display of the signal light source 50, the light is scattered to the light guide strip 60, the light guide strip 60 can guide light at a long distance, and during the use of the battery pack, the user can intuitively and clearly understand the power and working condition of the battery pack through the light scattered by the light guide strip 60.

[0034] The framework 10 is provided with a positioning portion 101, and when the light guide plate 60 is installed, it is located at the positioning portion 101 and matches the positioning portion 101, and the installed light guide plate 60 is tightly positioned by the shell 20.

[0035] Specifically, the shell 20 comprises an upper shell 201, a left shell 202 and a right shell 203, and after the upper shell 201, the left shell 202 and the right shell 203 are wrapped outside the framework, the shell 20 is surrounded.

[0036] Referring to Figure 3 , Figure 4 , Figure 5The battery module 30 includes a plurality of battery cell units 30a, the plurality of battery cell units 30a are connected in parallel or in series to form the battery module 30, the battery module 30 is composed of the plurality of battery cell units 30a, and the plurality of battery cell units 30a can be connected in parallel or in series according to actual voltage and capacity requirements. When the plurality of battery cell units 30a are connected in parallel, the capacity of the battery module 30 increases accordingly, and the voltage remains unchanged; when the plurality of battery cell units 30a are connected in series, the voltage of the battery module 30 increases, and the capacity remains unchanged. By reasonably selecting the parallel or series connection mode, the requirements of different power tools for power voltage and capacity can be met.

[0037] Since the skeleton 10 is provided with a plurality of mounting positions, when the battery cell unit 30a is mounted on the skeleton 10, it is inserted into the mounting position of the skeleton 10, and the two ends of the battery cell unit 30a are exposed outside the skeleton 10, facilitating the parallel or series connection between the plurality of battery cell units 30a.

[0038] When the shell 20 is assembled outside the skeleton 10, the left shell 202 and the right shell 203 are respectively wrapped on both sides of the skeleton 10, and the left shell 202 and the right shell 203 respectively cover the exposed ends of the battery cell unit 30a, thereby protecting the battery cell unit 30a. After the upper shell 201 is wrapped outside the skeleton 10, the circuit board 40 can be covered, thereby protecting the circuit board 40.

[0039] In the embodiment, the shell 20 is assembled by a plurality of split structures, and the assembled shell 20 mainly protects the battery cell unit 30a and the circuit board 40 of the battery pack. In addition, other areas on the skeleton 10 do not need to be covered by the shell 20, and these areas are directly exposed outside. The directly exposed area on the skeleton 10 can directly dissipate the heat generated by the internal battery cell unit 30a during operation, thereby improving the heat dissipation performance of the battery pack to a certain extent.

[0040] Specifically, in some embodiments, the light guide plate 60 includes a light guide portion 601 and a light emitting portion 602, the skeleton 10 is provided with a mounting surface 102, the mounting surface 102 is located on one side of the positioning portion 101, and when the light guide plate 60 is located at the positioning portion 101 and matches the positioning portion 101, the mounting surface 102 supports the light emitting portion 602 of the light guide plate 60, and the light guide portion 601 of the light guide plate 60 faces the signal light source 50.

[0041] In addition, the upper shell 201 is provided with a pressing portion 201a, and after the upper shell 201 is wrapped outside the skeleton 10, the pressing portion 201a covers the surface of the light emitting portion 602. The pressing portion 201a and the mounting surface 102 form a relative support above and below the light emitting portion 602, thereby clamping and fixing the light guide plate 60 in the vertical direction, and pressing and positioning the light guide plate 60.

[0042] Further, after the left shell 202 and the right shell 203 are wrapped outside the framework 10, the left shell 202 and the right shell 203 are located at both sides of the positioning part 101, and the left shell 202 and the right shell 203 at both sides of the positioning part 101 form a transverse clamping on the light guide plate 60, so that the light guide plate 60 can be transversely clamped and fixed.

[0043] In some embodiments, in order to improve the light display effect, the two ends of the light guide plate 60 extend towards the left shell 202 and the right shell 203 respectively, and the signal light source 50 on one side of the light guide plate 60 can be provided as a plurality of signal light sources 50, and the plurality of signal light sources 50 can improve the light brightness of the light guide plate 60.

[0044] Further, in some embodiments, the number of light guide plates 60 can be two, and the two light guide plates 60 are respectively installed at the front end and the rear end of the battery pack 100. During use of the battery pack 100, the user can intuitively and clearly understand the battery capacity and working condition of the battery pack through the light scattered by the light guide strip 60, regardless of whether the user is at the front end of the battery pack 100 or the rear end of the battery pack 100.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack, comprising: a skeleton; a shell at least partially covering an outer side of the skeleton; a battery module mounted on the skeleton; a circuit board electrically connected with the battery module; characterized in that the circuit board is electrically connected with a signal light source, and a light guide plate is mounted on the battery pack for light guiding of the signal light source; the skeleton is provided with a positioning portion, the light guide plate is mounted at the positioning portion, and the shell comprises an upper shell covering a surface of the skeleton and tightly positioning the light guide plate.

2. The battery pack of claim 1, wherein, The signal light source is an RGB three-color light source, which is suitable for displaying the power or working condition of the battery pack.

3. The battery pack of claim 1, wherein, The shell further comprises a left shell and a right shell, and the left shell, the right shell and the upper shell all cover the outer side of the skeleton.

4. The battery pack of claim 3, wherein, After the left shell and the right shell cover the outer side of the skeleton, the battery module can be covered; after the upper shell covers the outer side of the skeleton, the circuit board can be covered.

5. The battery pack of claim 3, wherein, After the left shell and the right shell cover the outer side of the skeleton, they are clamped on both sides of the light guide plate.

6. The battery pack of claim 4, wherein, At least part of the skeleton is not covered by the shell.

7. The battery pack of claim 1, wherein, The light guide plate comprises a light guiding portion and a light emitting portion, the skeleton is provided with a mounting surface, the mounting surface is located on one side of the positioning portion, the mounting surface is suitable for supporting the light emitting portion, and the light guiding portion faces the signal light source.

8. The battery pack of claim 1, wherein, The number of the light guide plates is two, and the two light guide plates are mounted at the front end and the rear end of the battery pack.

9. The battery pack of claim 7, wherein, The upper shell is provided with a pressing portion, after the upper shell covers the outer side of the skeleton, the pressing portion covers the surface of the light emitting portion, and the pressing portion and the mounting surface form opposite supports above and below the light emitting portion.

10. The battery pack of claim 5, wherein, The two ends of the light guide plate respectively extend towards the left shell and the right shell.

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