Battery pack, battery pack assembly and electric tool

Abstract

The utility model discloses a battery pack, a battery pack assembly and an electric tool, the battery pack comprises a shell, a controller, a battery electrically connected with the controller, a connecting elastic piece assembly electrically connected with the controller and a charging interface electrically connected with the controller, one side of the shell is a connecting side, the connecting elastic piece assembly is arranged on the connecting side, and the charging interface is electrically connected with the controller. The charging interface is also located on the connecting side of the shell, the shell is used for being in sliding fit with the battery holder, when the shell is installed on the battery holder, the connecting elastic piece assembly is used for being electrically connected with the battery holder, and the charging interface is covered by the battery holder. The charging interface is located on the connecting side of the shell, and when the shell is installed on the battery holder, the charging interface is covered by the battery holder, so that the charging interface does not need to be additionally provided with a protection structure, and impurities and the like do not easily enter the covered charging interface after the battery pack is installed.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to a battery pack, a battery pack assembly and an electric tool. Background Art

[0002] Most existing portable power tools are powered by quick-release battery packs, which are connected to the battery socket on the power tool via spring clips to transmit power and signals. The quick-release design allows longer battery life to be achieved by replacing the battery pack.

[0003] In the prior art, a battery pack is usually charged quickly through a special charging stand. The charging stand can be provided with a structure such as a blast element to cool the battery pack to achieve fast charging. However, this charging method requires a special charging stand for charging, and ordinary chargers cannot charge the battery pack slowly. Existing battery packs also have a structure with a slow charging interface, but after such battery packs are installed on the power tool, the slow charging interface is exposed to the outside, and impurities are easily introduced into the slow charging interface. Therefore, such battery packs need to be provided with additional protective structures to protect the slow charging interface. Utility Model Content

[0004] The present invention aims at the above-mentioned problems, overcomes at least one disadvantage, and provides a battery pack, a battery pack assembly, and an electric tool.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A battery pack is used for detachable installation on a battery holder of an electric tool, comprising a shell, a controller, a battery electrically connected to the controller, a connecting spring assembly electrically connected to the controller, and a charging interface electrically connected to the controller. One side of the shell is a connecting side, the connecting spring assembly is arranged on the connecting side, and the charging interface is also located on the connecting side of the shell. The shell is used to slide with the battery holder. When the shell is installed on the battery holder, the connecting spring assembly is used to electrically connect to the battery holder, and the charging interface is covered by the battery holder.

[0007] The charging interface of the present application is located on the connection side of the housing. When the housing is installed on the battery holder, the charging interface is covered by the battery holder. Therefore, the charging interface of the present application does not need to be provided with an additional protective structure. After the battery pack is installed, foreign matter and the like are not easy to enter the covered charging interface. The present application not only saves parts (no protective structure is required), but also makes it more convenient to use the charging interface. Compared with the existing design with a protective structure, there is no need to open the protective structure.

[0008] In actual use, the battery pack of the present application can be charged by connecting a special charging stand to a connecting spring assembly, or it can be charged by a common charger through a charging interface.

[0009] In actual use, the charging interface can be a variety of existing structural forms, including but not limited to Type-c, MicroUSB, DC socket, Lightning, etc.

[0010] The connecting spring assembly mentioned in the present application is a general term and is not limited to just springs. The connecting spring assembly can also be in other forms such as pins, contacts, etc., as long as it can achieve electrical connection with the battery holder.

[0011] In one embodiment of the present invention, the plug direction of the charging interface is perpendicular to the sliding direction of the housing relative to the battery holder.

[0012] In one embodiment of the present invention, the connection side of the shell has a boss, the boss is used to slide with the battery holder, the connecting spring assembly is arranged on the side of the boss, and the charging interface is located on the end surface of the boss.

[0013] In one embodiment of the utility model, there are slide grooves on both sides of the boss, and the slide grooves are used to cooperate with the slider on the battery seat; the connecting side of the shell also has a limiting surface, when the shell is installed on the battery seat, the limiting surface and the battery seat abut against each other, the limiting surface has a first limiting structure, and the battery seat has a second limiting structure that cooperates with the first limiting structure.

[0014] In one embodiment of the present invention, the first limiting structure is a protrusion, and the second limiting structure is a recess; or, the first limiting structure is a recess, and the second limiting structure is a protrusion.

[0015] The cooperation of the first limiting structure and the second limiting structure (cooperation of the protrusion and the recess) can further limit the housing and the battery seat, effectively preventing the battery pack from shaking left and right relative to the battery seat.

[0016] In one embodiment of the present invention, the charging interface is a slow charging interface.

[0017] In one embodiment of the present invention, the charging interface is a fast charging interface.

[0018] The present application also discloses a battery pack assembly, including a battery holder and a battery pack plugged with the battery holder, the battery holder is used to be arranged on an electric tool, the battery pack includes a housing, a controller, a battery electrically connected to the controller, a connecting spring assembly electrically connected to the controller, and a charging interface electrically connected to the controller, one side of the housing is a connecting side, the connecting spring assembly is arranged on the connecting side, and the charging interface is also located on the connecting side of the housing;

[0019] The battery holder is provided with a plug;

[0020] The shell is plugged into the battery seat. When the shell is installed on the battery seat, the plug is electrically connected to the connecting spring assembly, and the charging interface is covered by the battery seat.

[0021] In one embodiment of the present invention, the connection side of the housing has a boss, the boss is used to slide with the battery holder, the connecting spring assembly is arranged on the side of the boss, and the charging interface is located on the end surface of the boss;

[0022] The two sides of the boss are provided with slide grooves, and the battery seat is provided with a slider matched with the slide grooves; the connection side of the shell also has a limiting surface, the limiting surface has a first limiting structure, and the battery seat has a second limiting structure;

[0023] When the housing is mounted on the battery seat, the limiting surface and the battery seat abut against each other, and the first limiting structure and the second limiting structure cooperate with each other.

[0024] The present application also discloses an electric tool, comprising the battery pack assembly described above.

[0025] The beneficial effects of the utility model are as follows: the charging interface of the present application is located on the connection side of the shell, and when the shell is installed on the battery holder, the charging interface is covered by the battery holder. Therefore, the charging interface of the present application does not need to be provided with an additional protective structure, and after the battery pack is installed, foreign matter and the like are not easy to enter the covered charging interface. The present application not only saves parts (no protective structure is required), but also makes it more convenient to use the charging interface. Compared with the existing design with a protective structure, there is no need to open the protective structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the battery pack;

[0027] Figure 2 This is a schematic diagram of the battery pack from another angle;

[0028] Figure 3 It is a schematic diagram of the battery pack structure combined with the battery holder;

[0029] Figure 4 This is a schematic diagram of the battery pack structure after being separated from the battery holder.

[0030] The reference numerals in the figures are:

[0031] 100, battery pack; 1, shell; 1a, connection side; 11, boss; 111, slide groove; 12, limiting surface; 121, first limiting structure; 2, connecting spring assembly; 3, charging interface; 200, battery holder; 21, slider; 22, second limiting structure; 23, plug. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The utility model is described in detail below in conjunction with the accompanying drawings.

[0036] like Figure 1 , 2 As shown in Figures 3 and 4, this embodiment discloses a battery pack assembly, including a battery holder 200 and a battery pack 100 plugged into and mated with the battery holder 200, wherein the battery holder 200 is used to be disposed on an electric tool.

[0037] like Figure 1 , 2 As shown in Figures 3 and 4, the battery pack 100 of this embodiment includes a shell 1, a controller (omitted and not shown in the figures), a battery (omitted and not shown in the figures) electrically connected to the controller, a connecting spring assembly 2 electrically connected to the controller, and a charging interface 3 electrically connected to the controller. One side of the shell 1 is a connecting side 1a, the connecting spring assembly 2 is arranged on the connecting side 1a, and the charging interface 3 is also located on the connecting side 1a of the shell 1. The shell 1 is used for sliding cooperation with the battery holder 200. When the shell 1 is installed on the battery holder 200, the connecting spring assembly 2 is used for electrically connecting to the battery holder 200, and the charging interface 3 is covered by the battery holder 200.

[0038] The charging interface 3 of the present application is located at the connection side 1a of the housing 1. When the housing 1 is installed on the battery holder 200, the charging interface 3 is covered by the battery holder 200. Therefore, the charging interface 3 of the present application does not need to be provided with an additional protective structure. After the battery pack 100 is installed, foreign matter and the like are not easy to enter the covered charging interface 3. The present application not only saves parts (no protective structure is required), but also makes it more convenient to use the charging interface 3. Compared with the existing design with a protective structure, there is no need to open the protective structure.

[0039] In actual use, the battery pack 100 of the present application can be charged by connecting to the connecting spring assembly 2 through a special charging seat, and can also be charged by using a common charger through the charging interface 3.

[0040] In actual use, the charging interface 3 can be a variety of existing structural forms, including but not limited to Type-c, Micro USB, DC socket, Lightning, etc. In actual use, the charging interface 3 can be a slow charging interface or a fast charging interface. In this embodiment, it is a slow charging interface.

[0041] The connecting spring assembly 2 mentioned in the present application is a general term and is not limited to being a spring. The connecting spring assembly 2 can also be in other forms such as a pin, a contact, etc., as long as it can achieve electrical connection with the battery holder 200.

[0042] In actual use, the battery can be a lithium battery or other rechargeable batteries.

[0043] In this embodiment, the plug direction of the charging interface 3 is perpendicular to the sliding direction of the housing 1 relative to the battery holder 200. Figure 4 The plug direction of the charging interface 3 is the up-down direction, and the sliding direction of the shell 1 relative to the battery holder 200 is the horizontal direction.

[0044] like Figure 3 and 4 As shown, the battery holder 200 has a plug 23 and a slider 21. When the housing 1 is mounted on the battery holder 200, the plug 23 is electrically connected to the connecting spring assembly 2.

[0045] like Figure 1 and 2 As shown, in this embodiment, the connection side 1a of the housing 1 has a boss 11, which is used to slide with the battery holder 200, the connecting spring assembly 2 is arranged on the side of the boss 11, and the charging interface 3 is located on the end surface of the boss 11. Both sides of the boss 11 have slide grooves 111, which are used to cooperate with the slider 21 on the battery holder 200; the connection side 1a of the housing 1 also has a limiting surface 12, and when the housing 1 is installed on the battery holder 200, the limiting surface 12 and the battery holder 200 abut against each other.

[0046] like Figure 4 As shown, the limiting surface 12 has a first limiting structure 121, and the battery holder 200 has a second limiting structure 22 that cooperates with the first limiting structure 121. In actual use, the first limiting structure 121 is a convex block, and the second limiting structure 22 is a concave groove; or, the first limiting structure 121 is a concave groove, and the second limiting structure 22 is a convex block.

[0047] The cooperation between the first limiting structure 121 and the second limiting structure (cooperation between the protrusion and the recess) can further limit the housing 1 and the battery holder 200 , and effectively prevent the battery pack 100 from shaking left and right relative to the battery holder 200 .

[0048] This embodiment also discloses an electric tool, including the battery pack assembly of this embodiment.

[0049] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A battery pack for detachably mounting on a battery holder of an electric tool, comprising a housing, a controller, a battery electrically connected to the controller, a connecting spring assembly electrically connected to the controller, and a charging interface electrically connected to the controller, characterized in that: One side of the shell is the connection side, the connection spring assembly is arranged on the connection side, the charging interface is also located on the connection side of the shell, the shell is used to slide with the battery holder, when the shell is installed on the battery holder, the connection spring assembly is used to electrically connect with the battery holder, and the charging interface is covered by the battery holder.

2. The battery pack according to claim 1, characterized in that: The plug direction of the charging interface is perpendicular to the sliding direction of the shell relative to the battery seat.

3. The battery pack according to claim 1, wherein: The connection side of the shell has a boss, and the boss is used to slide with the battery seat. The connecting spring assembly is arranged on the side of the boss, and the charging interface is located on the end surface of the boss.

4. The battery pack according to claim 3, characterized in that: The boss has slide grooves on both sides, and the slide grooves are used to cooperate with the slider on the battery seat; the connection side of the shell also has a limiting surface, when the shell is installed on the battery seat, the limiting surface and the battery seat abut against each other, the limiting surface has a first limiting structure, and the battery seat has a second limiting structure that cooperates with the first limiting structure.

5. The battery pack according to claim 4, characterized in that: The first limiting structure is a convex block, and the second limiting structure is a concave groove; or the first limiting structure is a concave groove, and the second limiting structure is a convex block.

6. The battery pack according to claim 1, wherein: The charging interface is a slow charging interface.

7. The battery pack according to claim 1, characterized in that: The charging interface is a fast charging interface.

8. A battery pack assembly, comprising a battery holder and a battery pack plugged into the battery holder, wherein the battery holder is used to be arranged on an electric tool, characterized in that: The battery pack includes a shell, a controller, a battery electrically connected to the controller, a connecting spring assembly electrically connected to the controller, and a charging interface electrically connected to the controller, one side of the shell is a connecting side, the connecting spring assembly is arranged on the connecting side, and the charging interface is also located on the connecting side of the shell; The battery holder is provided with a plug; The shell is plugged into the battery seat. When the shell is installed on the battery seat, the plug is electrically connected to the connecting spring assembly, and the charging interface is covered by the battery seat.

9. The battery pack assembly according to claim 8, characterized in that: The connection side of the housing has a boss, the boss is used to slide with the battery holder, the connecting spring assembly is arranged on the side of the boss, and the charging interface is located on the end surface of the boss; The two sides of the boss are provided with slide grooves, and the battery seat is provided with a slider matched with the slide grooves; the connection side of the shell also has a limiting surface, the limiting surface has a first limiting structure, and the battery seat has a second limiting structure; When the housing is mounted on the battery seat, the limiting surface and the battery seat abut against each other, and the first limiting structure and the second limiting structure cooperate with each other.

10. An electric tool, characterized in that: A battery pack assembly comprising any one of claims 8 to 9.

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