Battery pack switching device

Abstract

The utility model provides a battery pack switching device, which is used for connecting a battery pack and an electric tool, and is characterized in that the switching device comprises a switching piece, one end of the switching piece is connected with the electric tool, and the other end of the switching piece is detachably connected with the battery pack; the battery pack comprises an adapter, the adapter is fixedly connected with the battery pack, the electrode plate is fixedly connected with the adapter, one end and the other end of the electrode plate are respectively exposed on two sides of the adapter, one end of the electrode plate is electrically connected with the battery pack, and the other end of the electrode plate is electrically connected with the electric tool. According to the technical scheme, the electrode plate is fixedly connected with the switching piece, so that the switching device is simplified, and the manufacturing difficulty and the manufacturing cost of the switching device are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack switching structure. Background Art

[0002] In order to meet the requirements of portability and improve the convenience of use, the power tools on the market are usually equipped with battery packs, which are used to power the power tools. Usually, a plug interface is provided on the battery pack, which is directly electrically connected to the interface of the power tool to realize power supply. However, due to the safety of lithium battery packs, industry competition, and technical confidentiality, the interface of lithium battery packs is mutually compatible with DC power tools, so when using them, you must use a battery pack that is compatible with them.

[0003] However, during the manufacturing process of electric tools, when the battery pack model needs to be replaced, since the battery pack does not match the electric tool, the entire electric tool housing needs to be re-molded, which greatly increases the manufacturing cost.

[0004] In order to solve the above problems and adapt other types of battery packs, a transfer structure is usually provided between the battery pack and the power tool, and the detachable assembly and electrical connection between the battery pack and the power tool are realized through the transfer structure. However, the power socket of the existing transfer structure is usually detachable, which leads to a complex structure and high manufacturing cost. Utility Model Content

[0005] The utility model aims to provide a battery pack switching device, which has the advantages of simple structure and low manufacturing cost.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery pack adapter device, which is used to connect a battery pack and a power tool, the adapter device comprising: an adapter, one end of which is connected to the power tool, and the other end of which is detachably connected to the battery pack; and an electrode sheet, which is fixedly connected to the adapter, one end and the other end of the electrode sheet are respectively exposed on both sides of the adapter, one end of the electrode sheet is electrically connected to the battery pack, and the other end of the electrode sheet is electrically connected to the power tool.

[0007] Furthermore, a mounting groove is provided on one side of the electric tool close to the adapter, a first clamping groove is provided on the side wall of the electric tool corresponding to the mounting groove, and a first clamping portion adapted to the first clamping groove is provided on the side wall of the adapter.

[0008] Furthermore, a pressing portion is provided on the end surface of the adapter connected to the electric tool, and the pressing portion abuts against the bottom of the assembly groove, so that the first clamping portion is tightly matched with the first clamping groove.

[0009] Furthermore, a limiting groove is provided at the bottom of the assembly groove, and a limiting portion adapted to the limiting groove is provided on the adapter.

[0010] Furthermore, a protrusion is provided at the end of the adapter close to the limiting portion, a second slot is formed between the protrusion and the limiting portion, and the end of the electric tool corresponding to the second slot is inserted into the slot.

[0011] Furthermore, a wedge-shaped surface is provided on the limiting portion, and the wedge-shaped surface enables an end surface of the limiting portion on a side close to the protrusion to form a convex structure.

[0012] Furthermore, a third card slot is provided on a side of the battery pack close to the adapter, a mounting slot is provided on a side of the adapter close to the battery pack, and a second card connection portion adapted to the third card slot is provided on a side wall of the mounting slot.

[0013] Furthermore, a card connector is provided on the battery pack, and a fourth card slot is correspondingly provided at the bottom of the mounting slot, and the fourth card slot is adapted to the card connector.

[0014] Furthermore, the electrode sheet and the adapter are integrally formed, and a reinforcement portion is provided on an end surface of the adapter close to the electric tool, and the reinforcement portion is provided corresponding to the electrode sheet.

[0015] Furthermore, an extension portion is provided on a side of the adapter close to the electrode sheet, and the extension portion enables the outer shape of the adapter to fit the assembly groove.

[0016] It can be seen from the analysis that the utility model discloses a battery pack adapter, including an adapter and an electrode sheet fixedly connected to the adapter. The adapter is set up so that the electric tool can be adapted to other types of battery packs, solving the problem that the housing of the electric tool needs to be re-molded when the battery pack is replaced during the production process, thereby greatly reducing the production cost of the electric tool; in addition, the electrode sheet is fixedly connected to the adapter, thereby simplifying the adapter, so that the adapter has the advantages of simple structure and low production cost.

[0017] The technical solution of the utility model reduces the difficulty of manufacturing the adapter, simplifies the structure of the adapter, and saves manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0019] Figure 1It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0020] Figure 2 It is an exploded view of an embodiment of the utility model.

[0021] Figure 3 It is a structural schematic diagram of an electric tool in one embodiment of the utility model.

[0022] Figure 4 It is a structural schematic diagram of a switching device in one embodiment of the utility model.

[0023] Figure 5 It is a structural schematic diagram of a switching device in another embodiment of the utility model.

[0024] Figure 6 It is a structural schematic diagram of a switching device in another embodiment of the utility model.

[0025] Figure 7 It is a structural schematic diagram of a battery pack in one embodiment of the utility model.

[0026] Explanation of the accompanying drawings: 1-adapter; 11-adapter; 101-second card slot; 102-installation slot; 103-guide slot; 104-fourth card slot; 111-first card connection portion; 112-abutment platform; 113-limiting portion; 114-abutment end surface; 115-protrusion; 116-extension portion; 117-second card connection portion; 118-reinforcement portion; 12-electrode sheet; 2-battery pack; 201-third card slot; 21-guide strip; 22-card connection piece; 221-card connector; 222-press button; 3-power tool; 301-assembly slot; 302-first card slot; 303-limiting slot; 31-first shell; 32-second shell; 33-end. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0028] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] One or more examples of the utility model are shown in the attached drawings. The detailed description uses numbers and letters to refer to the features in the drawings. Similar or similar marks in the drawings and descriptions have been used to refer to similar or similar parts of the utility model. As used herein, the terms "first", "second", and "third" etc. are used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of individual components.

[0030] See also Figure 1 and Figure 2 This embodiment provides a battery pack adapter 1, which is used to connect a battery pack 2 and an electric tool 3, so that the electric tool 3 can adapt to other types of battery packs 2, so that the factory does not need to re-open the mold of the shell of the electric tool 3 after replacing the battery pack 2, which greatly reduces the production cost of the electric tool 3. It should be noted that the electric tool 3 includes but is not limited to an electric screwdriver, an electric impact drill, and an electric cutting machine.

[0031] In one embodiment, the adapter 1 includes an adapter 11 and an electrode sheet 12. Specifically, one end of the adapter 11 is connected to the power tool 3, and the other end is detachably connected to the battery pack 2. The electrode sheet 12 is arranged on one side of the adapter 11. The electrode sheet 12 passes through the adapter 11 and is fixedly connected to the adapter 11. One end of the electrode sheet 12 is electrically connected to the battery pack 2, and the other end is electrically connected to the power tool 3, so that the battery pack 2 can supply power to the power tool 3. It can be understood that the fixed connection between the electrode sheet 12 and the adapter 11 can simplify the structure of the adapter 1, thereby reducing the difficulty and cost of manufacturing the adapter 1.

[0032] See also Figures 2 to 4In one embodiment, an assembly groove 301 is provided on one end of the electric tool 3 close to the adapter 11, a first clamping groove 302 is provided on the inner side wall of the electric tool 3 where the assembly groove 301 is located, and a first clamping portion 111 adapted to the first clamping groove 302 is provided on the side wall of the adapter 11.

[0033] Specifically, in this embodiment, two first clamping grooves 302 are provided on the inner side wall of the electric tool 3 where the assembly groove 301 is located, and the first clamping groove 302 is in a strip shape as a whole. Correspondingly, two first clamping portions 111 are provided, and are respectively located on the side walls of the adapter 11. Each first clamping portion 111 is composed of a plurality of linearly distributed clamping blocks, and each clamping block is arranged at intervals, thereby reducing the material used for the adapter 11 and further reducing the manufacturing cost.

[0034] It should be noted that the housing of the electric tool 3 usually includes two, namely, a first housing 31 and a second housing 32, and the first housing 31 and the second housing 32 are mounted by fastening screws. A portion of the assembly slot 301 is located on the first housing 31, and another portion is located on the second housing 32, and the two first slots 302 are located on the first housing 31 and the second housing 32, respectively. After the first housing 31 and the second housing 32 are assembled, the assembly slot 301 is also formed.

[0035] It should also be noted that when installing the adapter 11, firstly, one end of the adapter 11 is matched with a part of the assembly groove 301 on the first shell 31, and a first clamping portion 111 on the adapter 11 is clamped with a first clamping groove 302 on the first shell 31. Then, the second shell 32 is aligned with the first shell 31, and another first clamping portion 111 on the adapter 11 is clamped with the first clamping groove 302 on the second shell 32. Finally, the first shell 31 and the second shell 32 are fixed by tightening screws (not shown in the drawings), so that the adapter 11 can be pressed and fixed by the mutual cooperation of the first shell 31 and the second shell 32.

[0036] Please continue reading Figures 2 to 4 In one embodiment, a pressing portion 112 is provided on the end surface of the adapter 11 connected to the electric tool 3. When the adapter 11 is assembled with the electric tool 3, the pressing portion 112 abuts against the bottom of the assembly groove 301, so that the first clamping portion 111 is clamped with the first clamping groove 302, thereby preventing the adapter 11 and the electric tool 3 from shaking up and down after assembly, thereby improving the stability of the assembly between the adapter 11 and the electric tool 3.

[0037] In this embodiment, two abutting portions 112 are provided corresponding to the first clamping portions 111, and the abutting portions 112 are connected to the first clamping portions 111. It should be noted that in other embodiments, the shape and number of the abutting portions 112 can be set according to requirements, and they only need to be able to clamp the adapter 11 and the assembly groove 301 and prevent the adapter 11 and the electric tool 3 from shaking up and down.

[0038] In one embodiment, a limiting groove 303 is disposed at the bottom of the assembly groove 301 , and a limiting portion 113 is disposed on the adapter 11 , and the limiting portion 113 is adapted to the limiting groove 303 .

[0039] It should be noted that, in this embodiment, the end face of the adapter 11 away from the limiting portion 113 is the abutting end face 114. When the adapter 11 is assembled with the electric tool 3, the adapter 11 is horizontally limited by the cooperation between the limiting portion 113 and the limiting groove 303 and the abutting end face 114 and the side wall of the assembly groove 301, so as to prevent the adapter 11 from shaking in the front-to-back direction after assembly.

[0040] See also Figures 3 to 5 In one embodiment, a protrusion 115 is provided at the end of the adapter 11 near the limiting portion 113, and a second slot 101 is formed between the protrusion 115 and the limiting portion 113. The end 33 of the electric tool 3 corresponding to the second slot 101 is inserted into the second slot 101. Obviously, the second slot 101 is connected to the end 33 of the electric tool 3, which can further improve the stability of the cooperation between the electric tool 3 and the adapter 11.

[0041] Furthermore, in this embodiment, a wedge-shaped surface 1131 is provided on the limiting portion 113, and the wedge-shaped surface 1131 forms a convex structure on the end surface of the limiting portion 113 close to the protrusion 115, and the limiting portion 113 abuts against the end portion 33 through the convex structure, thereby limiting the adapter 11. It can be understood that when the adapter 11 is assembled with the power tool 3, the end portion 33 needs to be inserted into the second slot 101, and the design of the wedge-shaped surface 1131 can facilitate accurate positioning of the end portion 33 so that it can be smoothly inserted into the second slot 101, which is conducive to the installation of the adapter 11.

[0042] In one embodiment, an extension portion 116 is provided on one side of the adapter 11 close to the electrode sheet 12, and a reinforcing rib (not marked in the drawings) is provided on the extension portion 116 to enhance the structural strength of the extension portion 116. The provision of the extension portion 116 enables the shape of the adapter 11 to fit the assembly groove 301, thereby ensuring the aesthetics of the adapter 11 after assembly.

[0043] See also Figure 6 and Figure 7In one embodiment, a third card slot 201 is provided on one side of the battery pack 2 close to the adapter 11. A mounting slot 102 is provided on one side of the adapter 11 close to the battery pack 2, and a second card connection portion 117 adapted to the third card slot 201 is provided on the side wall of the mounting slot 102. The battery pack 2 is detachably assembled with the adapter 11 by the card connection between the second card connection portion 117 and the third card slot 201.

[0044] It is worth noting that the second clamping portion 117 is horizontally protrudingly arranged on the side wall of the mounting groove 102, so that the second clamping portion 117 and the bottom of the mounting groove 102 form a guide groove 103. The third clamping groove 201 is arranged on the battery pack 2, so that a guide bar 21 is formed on the battery pack 2. When the battery pack 2 is assembled with the adapter 11, the guide bar 21 can be aligned with the guide groove 103, and the battery pack 2 can be pushed along the extension direction of the guide groove 103, so that the second clamping portion 117 cooperates with the third clamping groove 201, and the battery pack 2 is assembled with the adapter 11.

[0045] In one of the embodiments, a clamping member 22 is disposed on the battery pack 2 , and a fourth clamping slot 104 is correspondingly disposed at the bottom of the mounting slot 102 , and the fourth clamping slot 104 is adapted to the clamping member 22 .

[0046] Specifically, an elastic member (not shown in the drawings) is disposed inside the battery pack 2, and one end of the elastic member is connected to the clamping member 22, and the other end is connected to the battery pack 2. The elastic member is used to squeeze the clamping member 22 toward the fourth clamping slot 104 so that the clamping member 22 is clamped with the fourth clamping slot 104.

[0047] In this embodiment, the card connector 22 includes: a card connector body (not shown in the drawings), a card connector 221 and a push button 222. The card connector body is arranged inside the battery pack 2 and is connected to one end of the elastic member. The card connector 221 is arranged on one side of the card connector body, and the card connector 221 protrudes from the end surface of the battery pack 2 and is adapted to the fourth card slot 104. The push button 222 is arranged on the side wall of the battery pack 2. By applying force to the push button 222, the push button 222 can be moved to the side away from the adapter 11, thereby driving the card connector 221 to move, so that the card connector 221 is separated from the fourth card slot 104, so that the battery pack 2 can be removed from the adapter 11. It should be noted that in other embodiments, the structure of the card connector 22 can be used as long as it can realize the detachable assembly between the battery pack 2 and the adapter 11.

[0048] Please go back Figures 2 to 4In one embodiment, the electrode sheet 12 is integrally formed with the adapter 11. The adapter 1 thus configured is not only simple in structure and easy to install, but also can further reduce the manufacturing cost. In this embodiment, a reinforcing portion 118 is provided on the end face of the adapter 11 on the side close to the power tool 3, and the reinforcing portion 118 is provided corresponding to the electrode sheet 12. The provision of the reinforcing portion 118 thickens the molding portion of the electrode sheet 12, so that in the integrally formed adapter 1, the connection between the electrode sheet 12 and the adapter 11 is more stable and reliable.

[0049] It should be noted that, in this embodiment, the reinforcing portion 118 extends to the abutting end surface 114. Since the reinforcing portion 118 protrudes from the abutting end surface 114, when the adapter 11 is assembled with the power tool 3, the reinforcing portion 118 abuts against the side wall of the assembly groove 301, thereby further improving the stability of the assembly of the adapter 11 with the power tool 3.

[0050] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: by setting up the adapter device 1, the power tool 3 can be adapted to other types of battery packs 2, which solves the problem that the shell of the power tool 3 needs to be re-molded due to replacement of the battery pack 2 during the production process, thereby greatly reducing the production cost of the power tool 3; in addition, the electrode sheet 12 is fixedly connected to the adapter 11, thereby simplifying the adapter device 1, so that the adapter device 1 has the advantages of simple structure and low production cost.

[0051] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery pack adapter, used to connect a battery pack to an electric tool, characterized in that: The switching device comprises: an adapter, one end of which is connected to the electric tool, and the other end of which is detachably connected to the battery pack; and An electrode sheet is fixedly connected to the adapter, one end and the other end of the electrode sheet are respectively exposed on both sides of the adapter, one end of the electrode sheet is electrically connected to the battery pack, and the other end is electrically connected to the power tool.

2. The battery pack adapter according to claim 1, characterized in that: A mounting groove is arranged on one side of the electric tool close to the adapter, a first clamping groove is arranged on the side wall of the electric tool corresponding to the mounting groove, and a first clamping portion adapted to the first clamping groove is arranged on the side wall of the adapter.

3. The battery pack adapter according to claim 2, characterized in that: A pressing portion is provided on the end surface of the adapter connected to the electric tool, and the pressing portion abuts against the bottom of the assembly groove, so that the first clamping portion is tightly matched with the first clamping groove.

4. The battery pack adapter according to claim 2, characterized in that: A limiting groove is arranged at the bottom of the assembly groove, and a limiting portion adapted to the limiting groove is arranged on the adapter.

5. The battery pack adapter according to claim 4, characterized in that: A protrusion is provided at the end of the adapter close to the limiting portion, a second slot is formed between the protrusion and the limiting portion, and the end of the electric tool corresponding to the second slot is inserted into the slot.

6. The battery pack adapter according to claim 5, characterized in that: The limiting portion is provided with a wedge-shaped surface, and the wedge-shaped surface enables the end surface of the limiting portion on one side close to the protrusion to form a convex structure.

7. The battery pack adapter according to claim 1, characterized in that: A third card slot is provided on one side of the battery pack close to the adapter, a mounting slot is provided on one side of the adapter close to the battery pack, and a second card connection portion adapted to the third card slot is provided on a side wall of the mounting slot.

8. The battery pack adapter according to claim 7, characterized in that: The battery pack is provided with a card connector, and a fourth card slot is correspondingly provided at the bottom of the mounting slot, and the fourth card slot is adapted to the card connector.

9. The battery pack adapter according to any one of claims 1 to 8, characterized in that: The electrode sheet and the adapter are integrally formed, and a reinforcement portion is provided on an end surface of the adapter close to the electric tool, and the reinforcement portion is provided corresponding to the electrode sheet.

10. The battery pack adapter according to claim 2, characterized in that: An extension portion is provided on one side of the adapter close to the electrode sheet, and the extension portion enables the outer shape of the adapter to fit the assembly groove.

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