Battery pack structure and electric tool

Abstract

The invention belongs to the technical field of electric tools, and particularly relates to a battery pack structure and an electric tool. The battery pack structure comprises a shell assembly and a battery cell integrated structure, the shell assembly comprises a shell, a first avoiding opening is formed in the bottom of the shell, the battery cell integrated structure is arranged in the shell, and the battery cell integrated structure comprises a battery cell and a first connecting end electrically connected with the battery cell; the first connecting end can be electrically connected with the electric tool body through the first receding opening in the axial direction of the shell so that the electric core can supply power to the electric tool body. A guide rail is arranged on the outer wall, making contact with the electric tool body, of the shell and is in sliding connection with the electric tool body, and the sliding direction is the axial direction of the shell. The battery pack structure in the technical scheme is compact in structure and convenient to mount.

Description

Technical Field

[0001] The present invention belongs to the technical field of power tools, and particularly relates to a battery pack structure and a power tool. Background Art

[0002] In order to improve the versatility of power tools and make the working range of power tools not restricted by the position of sockets, many power tools on the market are powered by battery packs. The battery pack has the advantages of being easy to carry and simple to install, and can greatly expand the application range of power tools.

[0003] The existing battery pack structure usually installs multiple battery cells, resulting in a bloated and large-sized battery pack structure. When used in miniaturized power tools, due to the lack of a miniaturized battery pack structure, the existing miniaturized power tools usually fix the battery pack inside the power tool. This method makes it inconvenient to replace the battery cells, and the sustainability of the power tool is not strong, making it inconvenient to use.

[0004] Therefore, there is an urgent need to propose a battery pack structure with a compact structure and convenient installation to adapt to the miniaturization development of power tools. Summary of the Invention

[0005] The purpose of the present invention is to provide a battery pack structure with a compact structure and convenient installation. This purpose is achieved through the following technical solutions:

[0006] A first aspect of the present invention proposes a battery pack structure, including a housing assembly and a battery cell integration structure. The housing assembly includes a housing, and a first avoidance opening is provided at the bottom of the housing. The battery cell integration structure is arranged inside the housing. The battery cell integration structure includes a battery cell and a first connection end electrically connected to the battery cell. The first connection end can be electrically connected to the power tool body through the first avoidance opening along the axial direction of the housing, so that the battery cell supplies power to the power tool body. A guiding track is provided on the outer wall of the housing in contact with the power tool body, and the guiding track is slidably connected to the power tool body, and the sliding direction is the axial direction of the housing.

[0007] By applying the battery pack structure provided by this technical solution, during the installation process of the battery pack structure and the power tool body, the first connection end can be connected to the electrical connection head of the power tool body along the axial direction of the housing. At the same time, the sliding connection between the guiding track and the power tool body defines the moving path of the battery pack structure, ensuring that the first connection end can be accurately inserted into the specified position. With this structural design, the loading and unloading process between the battery pack structure and the power tool body becomes extremely convenient and efficient.

[0008] In addition, the battery pack structure of the present invention may also have the following additional technical features:

[0009] In some embodiments of the present invention, the guiding track is a guiding groove axially arranged along the outer wall of the housing.

[0010] In some embodiments of the present invention, the guiding groove includes a first section and a second section. The first end of the first section has an insertion opening facing the bottom of the housing. The second end of the first section communicates with the second section. From the first end to the second end, the width of the first section gradually decreases.

[0011] In some embodiments of the present invention, the guiding groove further includes a third section communicating with the second section and a fourth section communicating with the third section. The third section and the second section are arranged at an angle, and the fourth section is perpendicular to the third section.

[0012] In some embodiments of the present invention, the guiding track is a protrusion axially arranged along the outer wall of the housing, or the guiding track is a magnetic attraction structure.

[0013] In some embodiments of the present invention, the battery cell integrated structure further includes a second connection end electrically connected to the battery cell. A second avoidance opening is provided at the bottom of the housing. The second connection end can be electrically connected to a power supply device through the second avoidance opening to supply power to the battery cell.

[0014] In some embodiments of the present invention, the battery cell integrated structure further includes a control circuit board located between the battery cell and the bottom of the housing. The control circuit board includes a first circuit board and a second circuit board axially arranged along the housing. The first circuit board and the second circuit board are electrically connected. The first circuit board is located on the side close to the battery cell, and the battery cell is electrically connected to the first connection end through the first circuit board.

[0015] In some embodiments of the present invention, the battery cell integrated structure includes a first conductive sheet. One end of the first conductive sheet is electrically connected to the end of the battery cell away from the first circuit board, and the other end of the first conductive sheet is electrically connected to the first circuit board. A positioning groove for placing the first conductive sheet is axially arranged along the inner wall of the housing.

[0016] In some embodiments of the present invention, the housing assembly further includes a cover. A plug-in portion is provided at the opening of the cover. The top of the housing has an installation opening. A card hole is circumferentially arranged on the plug-in portion. A protrusion is arranged inside the top of the housing. The plug-in portion is inserted into the installation opening, and the card hole is clamped with the protrusion.

[0017] In a second aspect of the present invention, a power tool is provided. The power tool includes a power tool body and the battery pack structure in the above-described embodiment. The power tool body has a battery compartment for installing the battery pack structure. The inner wall of the battery compartment is provided with a connection port and a connection portion. The connection port is electrically connected to the first connection end, and the guide rail is slidably connected to the connection portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0019] Figure 1 Schematically shows a schematic structural diagram of a battery pack structure according to an embodiment of the present invention;

[0020] Figure 2 Schematically shows an exploded view of a battery pack structure according to an embodiment of the present invention;

[0021] Figure 3 Schematically shows a schematic structural diagram of a battery cell integration structure according to an embodiment of the present invention;

[0022] Figure 4 Schematically shows an exploded view of a battery cell integration structure according to an embodiment of the present invention;

[0023] Figure 5 Schematically shows a schematic structural diagram of a housing according to an embodiment of the present invention;

[0024] Figure 6 Schematically shows a schematic structural diagram of a cover according to an embodiment of the present invention;

[0025] Figure 7 Schematically shows a schematic structural diagram of another cover according to an embodiment of the present invention.

[0026] The reference numerals in the drawings are as follows:

[0027] 100, housing assembly; 110, housing; 111, guide rail; 1111, first section; 1112, second section; 1113, third section; 1114, fourth section; 114, buckle; 115, positioning groove; 116, positioning protrusion; 117, anti-rotation portion; 120, cover; 121, insertion portion; 122, card hole; 123, notch; 124, handle;

[0028] 200, Battery cell integrated structure; 201, Battery cell; 202, First connection end; 203, Second connection end; 204, First circuit board; 204a, First positioning protrusion; 205, Second circuit board; 206, First conductive sheet; 206a, First connection portion; 2061a, First sheet structure; 2062a, Second sheet structure; 206b, Conductive sheet body; 206c, Second connection portion; 207, Second conductive sheet; 207a, Third sheet structure; 207b, Fourth sheet structure; 207c, Fifth sheet structure; 208, First gasket; 209, Second gasket; 209a, Second positioning protrusion; 209b, Ring rib; 210, First connector; 211, Second connector; 212, Protective cover; 213, Button; 214, Indicator light; 215, Heat dissipation pad. Detailed implementation manners

[0029] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0030] It should be understood that the terms used herein are only for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless otherwise clearly specified in the context, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be executed in the particular order described or illustrated, unless the execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0031] Although the terms first, second, third, etc. may be used in this document to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used in this document do not imply an order or sequence. Therefore, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0032] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "upper", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation other than the orientations depicted in the figure. For example, if the device in the figure is flipped, the element described as "below other elements or features" or "beneath other elements or features" will then be oriented as "above other elements or features" or "upper than other elements or features". Therefore, the exemplary term "below" may include both upper and lower orientations.

[0033] Figure 1 The structural schematic diagram of the battery pack structure according to an embodiment of the present invention is schematically shown. Figure 2 The exploded view of the battery pack structure according to an embodiment of the present invention is schematically shown. Figure 3 The structural schematic diagram of the battery cell integration structure 200 according to an embodiment of the present invention is schematically shown. Figure 4 The exploded view of the battery cell integration structure 200 according to an embodiment of the present invention is schematically shown. As Figures 1 to 4 shown, the present invention provides a battery pack structure, including a housing assembly 100 and a battery cell integration structure 200. The housing assembly 100 includes a housing 110. A first avoidance opening is provided at the bottom of the housing 110. The battery cell integration structure 200 is disposed inside the housing 110. The battery cell integration structure 200 includes battery cells 201 and a first connection end 202 electrically connected to the battery cells 201. The first connection end 202 can be electrically connected to the power tool body through the first avoidance opening along the axial direction of the housing 110, so that the battery cells 201 supply power to the power tool body; a guiding track 111 is provided on the outer wall of the housing 110 in contact with the power tool body. The guiding track 111 is slidably connected to the power tool body, and the sliding direction is the axial direction of the housing 110.

[0034] By applying the battery pack structure provided by the present technical solution, during the installation process of the battery pack structure and the power tool body, the first connection end 202 can be connected to the electrical connection joint of the power tool body along the axial direction of the housing 110. At the same time, the sliding connection mode between the guiding track 111 and the power tool body defines the moving path of the battery pack structure, ensuring that the first connection end 202 can be accurately inserted into the designated position. With this structural design, the loading and unloading process between the battery pack structure and the power tool body becomes extremely convenient and efficient.

[0035] Further, referring to Figure 1and Figure 2 , the housing 110 is generally cylindrical, and the battery cell integrated structure 200 can be axially inserted into the interior of the housing 110 along the axis of the housing 110. Optionally, an anti-rotation portion 117 is provided on the outer wall of the housing 110, and the anti-rotation portion 117 is provided on the opposite side of the guiding track 111. When the battery pack structure is placed on a plane, the anti-rotation portion 117 can prevent the battery pack structure from rolling. Exemplarily, the anti-rotation portion 117 can be a planar structure or a bracket, etc. Optionally, the first connection end 202 can adopt a Type-C interface.

[0036] Furthermore, referring to Figure 2 , the guiding track 111 is a guiding groove axially provided along the outer wall of the housing 110.

[0037] Correspondingly, in order to ensure that the battery pack structure can be correctly and stably installed, a plugging protrusion is provided on the power tool body. During the installation process of the battery pack structure, the user needs to align the guiding groove with the plugging protrusion, and then push the battery pack structure along the extending direction of the guiding groove until the first connection end 202 is successfully plugged with the power-consuming connector on the power tool body. This plugging method through the guiding groove and the plugging protrusion can not only effectively ensure that the connection end is installed in place, but also effectively prevent the battery pack structure from loosening after installation. It can be understood that since the plugging direction of the first connection end 202 and the power-consuming connector on the power tool body is along the axis of the housing 110, therefore, the guiding groove should be designed to extend along the axis of the housing 110. In this way, when the guiding groove moves along the plugging protrusion, the first connection end 202 can be smoothly connected to the power-consuming connector. In addition, there are various choices for the design of the plugging protrusion, such as a cuboid plugging protrusion, a cube plugging protrusion, or a cylindrical plugging protrusion, etc. The key is that they must be able to perform a smooth sliding connection with the guiding groove.

[0038] Furthermore, in some embodiments, the guiding groove includes a first section 1111 and a second section 1112. The first end of the first section 1111 has an insertion opening, and the insertion opening faces the bottom of the housing 110. The second end of the first section 1111 communicates with the second section 1112, and from the first end to the second end, the width of the first section 1111 gradually decreases.

[0039] By setting the first section 1111 in this structural form, it is easy to plug the insertion opening and the plugging protrusion. Optionally, the width of the second section 1112 is equal to the width of the plugging protrusion. Optionally, the lengths of the first section 1111 and the second section 1112 are respectively set according to the usage needs, and no specific limitation is made here.

[0040] Further, the guiding groove further includes a third section 1113 communicating with the second section 1112 and a fourth section 1114 communicating with the third section 1113. The third section 1113 is arranged at an angle with the second section 1112, and the fourth section 1114 is perpendicular to the third section 1113.

[0041] Understandably, by setting the guiding groove in a zigzag shape, the fourth section 1114 limits the axial displacement of the housing 110, which can prevent the first connection end 202 from loosening from the electrical connector and prevent the first connection end 202 from detaching from the electrical connector. The third section 1113 is used to transition between the second section 1112 and the fourth section 1114, which can make the sliding process of the housing 110 smoother. Optionally, the included angle between the extending direction of the third section 1113 and the extending direction of the second section 1112 can be 45° to 60°. Exemplarily, the included angle can be 45°, 50°, 55° or 60°, etc.

[0042] In some embodiments, the guiding groove can also be linear. The position of the guiding groove is set according to the positions of the first connection end 202 and the electrical connector, so as to ensure that the first connection end 202 can be inserted in place.

[0043] Further, the guiding track 111 is a protrusion axially arranged along the outer wall of the housing 110, or the guiding track 111 is a magnetic structure.

[0044] When the guiding track 111 is a protrusion, correspondingly, a groove is provided on the power tool body. When installing the battery pack structure, align the protrusion with the groove and push the battery pack structure axially along the housing 110 to insert the first connection end 202 and the electrical connector. Optionally, the magnetic structure can be a magnet connected to the outer wall of the housing 110. Of course, the magnetic structure can also be arranged inside the housing 110 or embedded in the wall of the housing 100, as long as it can be adsorbed on the power tool body. When the guiding track 111 is a magnetic structure, correspondingly, a substance such as iron or nickel that can be attracted by a magnet is provided on the power tool body. When the battery pack structure is installed in place, the battery pack structure is adsorbed on the power tool body, thereby preventing the battery pack structure from rotating.

[0045] Further, referring to Figure 1 , the battery cell integrated structure 200 further includes a second connection end 203 electrically connected to the battery cell 201. A second avoidance opening is provided at the bottom of the housing 110, and the second connection end 203 can be electrically connected to a power supply device through the second avoidance opening to supply power to the battery cell 201.

[0046] In some cases, the second connection end 203 can be selectively designed as a Type-C interface. The advantage of this design is that it can be adapted to the connector of the Type-C interface, thus providing a more convenient configuration method. In this way, when the user needs to charge the device, it is not easy to be unable to charge because the appropriate power supply connector cannot be found.

[0047] Further, referring to Figure 3 and Figure 4 , the battery cell integrated structure 200 further includes a control circuit board, which is located between the battery cell 201 and the bottom of the housing 110. The control circuit board includes a first circuit board 204 and a second circuit board 205 arranged along the axis of the housing 110. The first circuit board 204 and the second circuit board 205 are electrically connected. The first circuit board 204 is located on the side close to the battery cell 201, and the battery cell 201 is electrically connected to the first connection end 202 through the first circuit board 204.

[0048] By adopting a multi-layer circuit board placed in layers, the internal space of the housing 110 can be reasonably utilized. In this embodiment, the control circuit board includes two circuit boards. In other embodiments, the control circuit board can also include three or more circuit boards. Optionally, the negative electrode of the battery cell 201 is loaded into the housing 110 with the bottom of the housing 110 facing, and the control circuit board is located between the negative electrode of the battery cell 201 and the bottom plate of the housing 110.

[0049] Optionally, a first connector 210 is provided at the first connection end 202, and an avoidance opening is provided on the second circuit board 205. The first connector 210 is located at the avoidance opening, and the end is fixed to the first circuit board 204. Optionally, a second connector 211 is provided at the second connection end 203, and the second connector 211 is connected to the second circuit board 205.

[0050] Further, Figure 5 Schematically shows a schematic structural diagram of the housing 110 according to an embodiment of the present invention. Referring to Figure 4 and Figure 5 , the battery cell integrated structure 200 includes a first conductive sheet 206. One end of the first conductive sheet 206 is electrically connected to the end of the battery cell 201 away from the first circuit board 204, and the other end of the first conductive sheet 206 is electrically connected to the first circuit board 204. A positioning groove 115 for placing the first conductive sheet 206 is axially provided along the inner wall of the housing 110.

[0051] Understandably, through the setting of the first conductive sheet 206, the electrical connection between the battery cell 201 and the second circuit board 205 is achieved. This connection method not only ensures stable power supply but also improves the reliability of the overall circuit. In addition, the setting of the positioning groove 115 provides the necessary space for the precise installation of the first conductive sheet 206, ensuring its correct position in the battery pack structure. Precisely setting the first conductive sheet 206 in the positioning groove 115 can effectively prevent the first conductive sheet 206 from undergoing unnecessary movement or displacement after the battery pack structure has been used for a long time, which has a good effect on maintaining the performance of the battery pack structure and extending its service life.

[0052] Optionally, the first conductive sheet 206 can be a nickel sheet. In some embodiments, the first conductive sheet 206 includes a first connection portion 206a, a conductive sheet body 206b, and a second connection portion 206c. The first connection portion 206a is respectively connected to both ends of the conductive sheet body 206b. Optionally, the conductive sheet body 206b is a rectangular sheet structure. In order to make the conductive sheet fit more closely to the side surface of the battery cell 201, the conductive sheet can also be set as a curved surface structure. Optionally, the first connection piece is a sheet structure, and the first connection portion 206a is electrically connected to the end of the battery cell 201 away from the control circuit board. In order to make the first connection portion 206a fit the end face of the battery cell 201, the first connection portion 206a and the conductive sheet body 206b are perpendicularly connected. Optionally, the second connection portion 206c is a sheet structure, and the second connection portion 206c is electrically connected to the second circuit board 205. In order to facilitate the connection between the second connection portion 206c and the second circuit board 205, the second connection portion 206c and the second circuit board 205 are perpendicularly arranged.

[0053] Furthermore, two first positioning protrusions 204a are spaced apart on the outer periphery of the first circuit board 204, and a first card slot for placing the conductive sheet body 206b is formed between the two first positioning protrusions 204a. By setting the first card slot on the first circuit board 204, the conductive sheet body 206b can be limited, thereby making the overall battery cell integrated structure 200 more compact and stable. Understandably, the distance between the two first positioning protrusions 204a is set according to the width of the conductive sheet body 206b, so as to ensure that the conductive sheet body 206b does not shift, and further ensure the connection stability between the first conductive sheet 206 and the battery cell 201 and the stable, safe and reliable operation of the circuit.

[0054] Further, a first gasket 208 is provided at one end of the battery cell 201 away from the control circuit board. A through hole is formed in the middle of the first gasket 208. The part of the first connecting portion 206a away from the conductive sheet body 206b is bent toward the battery cell 201, so that a part of the structure of the first connecting portion 206a is located in the through hole of the first gasket 208. It can be understood that the first gasket 208 plays a role in positioning the first connecting portion 206a. At the same time, the setting of the first gasket 208 plays a role in buffering and protecting the battery cell 201, reducing the damage to the battery cell 201 caused by collision or dropping. Optionally, the first gasket 208 is generally circular, and its outer diameter is equal to the outer diameter of the battery cell 201. The through hole in the middle of the first gasket 208 is a rectangular through hole. Optionally, the material of the first gasket 208 can be rubber or foam, etc.

[0055] Further, the first connecting portion 206a includes a first sheet-like structure 2061a and a second sheet-like structure 2062a. The first sheet-like structure 2061a is connected to the conductive sheet body 206b through the second sheet-like structure 2062a. The second sheet-like structure 2062a is perpendicular to the conductive sheet body 206b. The first sheet-like structure 2061a and the second sheet-like structure 2062a are parallel. The first sheet-like structure 2061a is in contact with the battery cell 201, and there is a certain interval between the second sheet-like structure 2062a and the battery cell 201, that is, there is a height difference between the second sheet-like structure 2062a and the first sheet-like structure 2061a. By setting the first connecting portion 206a in this structural form, the first sheet-like structure 2061a can be placed in the through hole of the first gasket 208. Optionally, the height difference between the first sheet-like structure 2061a and the second sheet-like structure 2062a is equal to the thickness of the first gasket 208.

[0056] Further, a second conductive sheet 207 is provided at one end of the battery cell 201 close to the control circuit board. The battery cell 201 is electrically connected to the first circuit board 204 through the second conductive sheet 207. A second gasket 209 is provided between the battery cell 201 and the first circuit board 204. A through hole is formed in the middle of the second gasket 209. A part of the second conductive sheet 207 is bent toward the battery cell 201, so that a part of the structure of the second conductive sheet 207 is located in the through hole of the second gasket 209. In order to enable the first conductive sheet 206 and the second gasket 209 to be assembled, the second conductive sheet 207 is provided with a third sheet-like structure 207a, a fourth sheet-like structure 207b, and a fifth sheet-like structure 207c. Among them, the third sheet-like structure 207a and the fifth sheet-like structure 207c are respectively located at both ends of the fourth sheet-like structure 207b. There is a height difference between the third sheet-like structure 207a and the fourth sheet-like structure 207b, and the fifth sheet-like structure 207c is perpendicularly arranged with respect to the fourth sheet-like structure 207b, and the fifth sheet-like structure 207c extends in the direction toward the first circuit board 204. The height difference between the third sheet-like structure 207a and the fourth sheet-like structure 207b enables the third sheet-like structure 207a to be placed in the through hole of the second gasket 209, so that the third sheet-like structure 207a contacts the battery cell 201. Optionally, the height difference between the third sheet-like structure 207a and the fourth sheet-like structure 207b is equal to the thickness of the second gasket 209. By perpendicularly arranging the fifth sheet-like structure 207c and the fourth sheet-like structure 207b, the fifth sheet-like structure 207c can be connected to the first circuit board 204. Optionally, the second conductive sheet 207 can be a nickel sheet.

[0057] Further, two second positioning protrusions 209a are spaced apart from each other on the outer periphery of the second gasket 209. A second card slot for placing the conductive sheet body 206b is formed between the two second positioning protrusions 209a. The first card slot and the second card slot are arranged opposite to each other. By providing the second card slot on the second gasket 209, the conductive sheet body 206b can be limited, so that the overall battery cell integrated structure 200 is more compact and stable. It can be understood that the distance between the two second positioning protrusions 209a is set according to the width of the conductive sheet body 206b, so as to ensure that the conductive sheet body 206b does not shift, and further ensure the connection stability between the first conductive sheet 206 and the battery cell 201 and the stable, safe and reliable operation of the circuit. Exemplarily, the through hole on the second gasket 209 is a rectangular through hole, and the material of the second gasket 209 can be rubber or foam, etc. Optionally, a ring rib 209b is provided on the outer periphery of the second gasket 209, and the ring rib 209b is used to support the first circuit board 204.

[0058] Further, continue to refer to Figure 4, a heat dissipation pad 215 is provided on the outer periphery of the battery cell 201. By providing the heat dissipation pad 215 on the outer periphery of the battery cell 201, the accumulation of heat in the battery cell 201 can be reduced, preventing the temperature of the battery cell 201 from being too high and affecting its performance and service life. At the same time, the setting of the heat dissipation pad 215 can reduce the impact on the battery cell 201 caused by external collisions, avoiding damage to the battery cell 201 due to bumps. Optionally, the heat dissipation pad 215 can be a rectangular pad-like structure wound around the outer periphery of the battery cell 201, or it can be a cylindrical structure sleeved on the battery cell 201. Optionally, the heat dissipation pad 215 can be a heat-conducting silicone pad. Optionally, when using a battery cell 201 with a larger outer diameter, the heat dissipation pad 215 may not be needed. Of course, the thickness of the heat dissipation pad 215 can also be adjusted according to the outer diameter size of the battery cell 201.

[0059] See Figure 4 and Figure 5 , a switch button 213 is provided on the second circuit board 205. Pressing the switch button 213 turns on the charging circuit, and the power supply device can charge the battery pack structure. After the battery is fully charged, pressing the button 213 again disconnects the battery pack structure from the power supply device.

[0060] Furthermore, an indicator light 214 is provided on the second circuit board 205. The design of the indicator light 214 is to enable users to more conveniently identify and understand the current state of the battery level. Specifically, in this embodiment, the number of indicator lights 214 is set to two. In the case where the battery level is completely depleted, neither of the two indicator lights 214 will show any sign of lighting up, thus intuitively conveying to the user the information that the battery level has been completely depleted. When users need to charge the device, they only need to connect the second connection end 203 to the corresponding power supply device. After the connection is completed, users can press the button 213 to start the charging process. At this time, the first indicator light 214 will start to blink, indicating that the charging is in progress and the battery level in the battery pack structure is less than 50%. As the charging continues, once the battery level in the battery pack structure exceeds 50%, the first indicator light 214 will change to a continuously lit state. At the same time, the second indicator light 214 will also start to blink to indicate that the battery level is further increasing. Finally, when the battery pack structure is fully charged, both indicator lights 214 will remain continuously lit, thus clearly showing to the user that the charging has been completed. Of course, in other embodiments, the number of indicator lights 214 can be three, four, five, etc., which can be specifically set according to the usage needs.

[0061] Optionally, a second connector 211 is provided at the second connection end 203, and a protective cover 212 is provided on the second connector 211, and the protective cover 212 is located above the button 213. The protective cover 212 protects the second connection end 203, and the button 213 can be pressed by pressing the protective cover 212. Optionally, the protective cover 212 is made of a transparent material, so that the position of the button 213 and the status of the indicator light 214 can be observed. Optionally, the protective cover 212 can be made of silicone material, which has a certain elasticity, so that the button 213 can be pressed down.

[0062] Further, Figure 6 A schematic structural diagram of a cover 120 according to an embodiment of the present invention is shown schematically. Figure 7 Schematically shows a structural diagram of another cover 120 according to an embodiment of the present invention. Figures 5 to 7 The shell assembly 100 also includes a cover 120, a plug-in portion 121 is provided at the opening of the cover 120, a mounting opening is provided at the top of the shell 110, a clamping hole 122 is provided in the circumference of the plug-in portion 121, a protrusion is provided on the inner side of the top of the shell 110, the plug-in portion 121 and the mounting opening are plugged in, and the clamping hole 122 and the protrusion are clamped in.

[0063] The fast installation of the cover 120 and the housing 110 can be achieved by snapping the clamping hole 122 and the protrusion. Optionally, the plug-in portion 121 is a partially open annular structure, and the opening is set so that the plug-in portion 121 has a certain elasticity, so that the buckle 114 can be snapped into the clamping hole 122, and after the buckle 114 and the clamping hole 122 are matched, the plug-in portion 121 can automatically rebound. Preferably, there are multiple buckles 114, and correspondingly, there are multiple clamping holes 122. The stability of the connection can be increased by setting multiple buckles 114. Exemplarily, the number of buckles 114 can be two, three, four or five, etc., which are specifically set according to the use needs and are not specifically limited here. Preferably, a positioning protrusion 116 is set inside the opening of the housing 110, and the opening on the plug-in portion 121 is a positioning notch 123. When installing the cover 120, the positioning notch 123 is directly opposite to the positioning protrusion 116, so that the two are plugged in. That is to say, the positioning notch 123 and the positioning protrusion 116 can facilitate the operator to determine the insertion position of the cover 120. In addition, after the cover 120 is inserted into the housing 110, the positioning protrusion 116 opens the positioning notch 123, so that the plug-in portion 121 is expanded and tightened at the installation opening of the housing 110, ensuring a stable connection between the two and avoiding loosening or falling off.

[0064] Further, see Figure 6 and Figure 7, a handle 124 is provided on the top of the cover 120. A through hole is formed in the middle of the handle 124, and the through hole can be used to thread an anti-drop rope. When taking the battery pack structure, the anti-drop rope can be put on the wrist to prevent the battery pack structure from falling off. Optionally, the shape of the handle is set according to the usage requirements and will not be specifically limited here.

[0065] Furthermore, this technical solution also provides a power tool, including a power tool body and the above battery pack structure. The power tool body has a battery compartment for installing the battery pack structure. A connection port and a connection part are provided on the inner wall of the battery compartment. The connection port is electrically connected to the first connection end 202, and the guide rail 111 is slidably connected to the connection part.

[0066] The power tool body includes, but is not limited to, any one of the following: a lawn mower, a blower, a pruning machine, a chain saw, a lawn mower, an angle grinder, and a drill. Of course, the power tool body can also be other types of tools, and the embodiments of the present application do not limit this. The power tool body receives the power output from the battery pack structure through the connection port.

[0067] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A battery pack structure, characterized in that: The invention comprises a shell component (100) and a battery cell integrated structure (200), wherein the shell component (100) comprises a shell (110), a first avoidance opening is arranged at the bottom of the shell (110), the battery cell integrated structure (200) is arranged inside the shell (110), the battery cell integrated structure (200) comprises a battery cell (201) and a first connection end (202) electrically connected to the battery cell (201), the first connection end (202) can be electrically connected to an electric tool body through the first avoidance opening along the axial direction of the shell (110), so that the battery cell (201) supplies power to the electric tool body; the outer wall of the shell (110) in contact with the electric tool body is provided with a guide track (111), the guide track (111) is slidably connected to the electric tool body, and the sliding direction is the axial direction of the shell (110).

2. The battery pack structure according to claim 1, characterized in that: The guide track (111) is a guide groove axially arranged along the outer wall of the housing (110).

3. The battery pack structure according to claim 2, characterized in that: The guide groove comprises a first section (1111) and a second section (1112), the first end of the first section (1111) having an insertion port, the insertion port facing the bottom of the housing (110), the second end of the first section (1111) being connected to the second section (1112), and the width of the first section (1111) gradually decreasing from the first end to the second end.

4. The battery pack structure according to claim 3, characterized in that: The guide groove also includes a third section (1113) connected to the second section (1112) and a fourth section (1114) connected to the third section (1113), the third section (1113) and the second section (1112) are arranged at an angle, and the fourth section (1114) and the third section (1113) are perpendicular.

5. The battery pack structure according to claim 1, characterized in that: The guide track (111) is a protrusion axially arranged along the outer wall of the housing (110), or the guide track (111) is a magnetic attraction structure.

6. The battery pack structure according to claim 1, characterized in that: The battery cell integrated structure (200) further comprises a second connection end (203) electrically connected to the battery cell (201); a second avoidance opening is provided at the bottom of the housing (110); and the second connection end (203) can be electrically connected to a power supply device through the second avoidance opening to supply power to the battery cell (201).

7. The battery pack structure according to claim 1, characterized in that: The battery cell integrated structure (200) further comprises a control circuit board, the control circuit board being located between the battery cell (201) and the bottom of the housing (110), the control circuit board comprising a first circuit board (204) and a second circuit board (205) being arranged axially along the housing (110), the first circuit board (204) and the second circuit board (205) being electrically connected, the first circuit board (204) being located on a side close to the battery cell (201), and the battery cell (201) being electrically connected to the first connection end (202) via the first circuit board (204).

8. The battery pack structure according to claim 7, characterized in that: The battery cell integrated structure (200) comprises a first conductive sheet (206), one end of the first conductive sheet (206) being electrically connected to an end of the battery cell (201) away from the first circuit board (204), the other end of the first conductive sheet (206) being electrically connected to the first circuit board (204), and a positioning groove (115) for placing the first conductive sheet (206) being axially arranged along the inner wall of the housing (110).

9. The battery pack structure according to any one of claims 1 to 8, characterized in that: The shell assembly (100) further comprises a cover (120), an inserting portion (121) is arranged at an opening of the cover (120), a mounting opening is provided at the top of the shell (110), a clamping hole (122) is arranged in the circumference of the inserting portion (121), a protrusion is arranged on the inner side of the top of the shell (110), the inserting portion (121) and the mounting opening are plugged in, and the clamping hole (122) and the protrusion are clamped in.

10. An electric tool, characterized in that: The invention comprises an electric tool body and a battery pack structure according to any one of claims 1 to 9, wherein the electric tool body has a battery compartment for installing the battery pack structure, the inner wall of the battery compartment is provided with a connection port and a connection part, the connection port and the first connection end (202) are electrically connected, and the guide rail (111) and the connection part are slidably connected.

Images