Battery pack

Abstract

The battery pack comprises a shell, and the shell comprises a first shell and a second shell which are assembled into a whole; the battery cell group comprises a plurality of battery cells, and the battery cell group is positioned in an accommodating space formed by the first shell and the second shell; the tool interface is formed in the first shell and used for being detachably connected to electric equipment; the plurality of connecting terminals are exposed out of the tool interface, and the battery pack outputs the electric energy of the battery cell group through the connecting terminals; the first shell comprises a plurality of limiting ribs, and the limiting ribs are arranged at the tool interface and are configured to support the connecting terminal.

Description

Technical Field

[0001] The utility model relates to the field of charging, in particular to a battery pack. Background Art

[0002] In recent years, with the rapid development of modern industry, the requirements for power and power of power tools with battery packs, such as wrenches, impact tools, cutting tools, etc., are getting higher and higher. Because the tools need to plug and unplug the battery pack many times in different application scenarios, the connection terminals on the battery pack are connected to the plugs of the tools, and the shape and thickness of the connection terminals vary with the different transmitted currents and voltages. Regardless of the shape, it is hoped that the plug-in is reliable. When the battery pack is plugged into the tool, it is inevitable that there will be relative movement between the connection terminals and the plugs. The plugs will deform the connection terminals. After the connection terminals are excessively deformed, the connection terminals and the plugs are in poor contact. The connection terminals are excessively deformed and broken, and the broken parts cause short circuits in electronic components. In severe cases, the battery pack will catch fire or explode, greatly affecting work efficiency and causing great trouble to users.

[0003] However, the output terminals of existing battery packs are usually connected to the circuit board by direct welding or by connecting with hard guides. This kind of hard connection structure has limited terminal seat strength and is more complicated to install. When using tools that require vibration, the welding part is easy to break, which will greatly affect the service life of the battery pack.

[0004] In view of this, a better battery pack connection terminal limiting structure is needed to solve the problems existing in the existing connection terminal limiting structure. Utility Model Content

[0005] The purpose of this application is to overcome the shortcomings of the prior art, remove the terminal seat on the circuit board, set limiting ribs on the first shell of the battery pack, and provide a safer, more stable and conveniently assembled battery pack. The utility model is achieved through the following technical solutions:

[0006] A battery pack comprises a shell, including a first shell and a second shell assembled into one body; a battery cell group, including a plurality of battery cells, wherein the battery cell group is located in a housing space formed by the first shell and the second shell; a tool interface, formed in the first shell, for being detachably connected to an electrical device; a plurality of connecting terminals, exposed in the tool interface, through which the battery pack outputs electrical energy of the battery cell group; the first shell comprises a plurality of limiting ribs, wherein the limiting ribs are arranged in the tool interface and are configured to support the connecting terminals and limit excessive deformation of the connecting terminals.

[0007] Furthermore, the battery pack includes a circuit board, and the connecting terminal is electrically connected to the circuit board.

[0008] Furthermore, the tool interface includes an outer surface and an inner wall surface, the outer surface is formed as a docking surface with the electrical equipment, the inner wall surface faces the battery cell group, and the limiting ribs extend from the inner wall surface toward the accommodating space.

[0009] Furthermore, two adjacent limiting ribs form a terminal accommodating space, each connecting terminal is located in the terminal accommodating space, and the two adjacent limiting ribs support the connecting terminal to limit excessive deformation of the connecting terminal during multiple plugging and unplugging.

[0010] Furthermore, the gap between the limiting rib and the connecting terminal is 0.2-0.8 mm, that is, the shortest distance from any point on the connecting terminal to the limiting rib is 0.2-0.8 mm. The gap can limit excessive deformation of the connecting terminal and facilitate assembly.

[0011] Furthermore, the limiting rib includes a main body and a reinforcing portion extending from the main body, the reinforcing portion is connected to the main body and the inner wall, the tool interface includes a terminal slot, and the reinforcing portion extends into the terminal slot toward the terminal slot, so as to enhance the limiting strength of the limiting rib.

[0012] Furthermore, the connection terminal includes a power terminal, and the power terminal includes a base and a plurality of pairs of clamping arms extending from the base, with cutouts formed between adjacent clamping arms for connection with an electrical device.

[0013] The battery pack eliminates the terminal seat, and the limiting rib is provided on the first shell of the battery pack. The limiting rib is also provided with a reinforcement portion to limit excessive deformation of the connecting terminal, thereby making the battery pack plugging and unplugging more stable and reliable. There is no need to install the terminal seat, making assembly more convenient and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a battery pack according to an embodiment of the present application.

[0015] Figure 2 for Figure 1 A top view of the battery pack is shown.

[0016] Figure 3 for Figure 1 A three-dimensional view of the first shell of the battery pack is shown.

[0017] Figure 4 for Figure 1 The first housing of the battery pack is shown in a three-dimensional view with connecting terminals.

[0018] Figure 5 for Figure 4 Section view along line AA.

[0019] Figure 6 for Figure 1 The battery pack shown is a three-dimensional view without the first shell. DETAILED DESCRIPTION

[0020] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0021] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for convenience of explanation and are not limited to one position or one spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] Combination Figures 1 to 4A battery pack 100 includes a shell, the shell includes a first shell 101 and a second shell 102 assembled into one body; a battery cell group includes a plurality of battery cells (not shown), the battery cell group is located in a receiving space formed by the first shell 101 and the second shell 102; a tool interface 1 formed in the first shell 101, for detachably connecting to an electrical device; a plurality of connecting terminals 2 exposed in the tool interface 1, the battery pack 100 outputs electrical energy of the battery cell group through the connecting terminals 2; wherein the first shell 101 includes a plurality of limiting ribs 3, the limiting ribs 3 are arranged on the tool interface 1, and are configured to support the connecting terminals 2 to limit excessive deformation of the connecting terminals 2.

[0023] Preferably, the tool interface 1 includes an outer surface 11 and an inner wall surface 12, the outer surface 11 is formed as a docking surface with the electrical equipment, the inner wall surface 12 faces the battery cell group, and the limiting ribs 3 extend from the inner wall surface 12 to the accommodating space to form strips.

[0024] Two adjacent limiting ribs 3 form a terminal accommodating space, and each connecting terminal 2 is located in the terminal accommodating space. The two adjacent limiting ribs 3 support the connecting terminal 2 to limit excessive deformation of the connecting terminal 2 during multiple plugging and unplugging.

[0025] Preferably, the gap between the limiting rib 3 and the connecting terminal 2 is 0.2-0.8 mm, that is, the shortest distance from any point on the connecting terminal 2 to the limiting rib 3 is 0.2-0.8 mm. The gap can limit excessive deformation of the connecting terminal 2 and facilitate assembly.

[0026] Combination Figure 3 , Figure 5 and Figure 6 The limiting rib 3 includes a main body 32 and a reinforcing portion 31 extending from the main body 32, the reinforcing portion 31 is connected to the main body 32 and the inner wall, the tool interface 1 includes a terminal slot 4, the reinforcing portion 31 extends into the terminal slot 4 toward the terminal slot 4, and is used to enhance the limiting strength of the limiting rib 3. The battery pack 100 includes a circuit board 5, and the connecting terminal 2 is electrically connected to the circuit board 5.

[0027] Preferably, the connection terminal 2 comprises a power terminal, and the power terminal comprises a base and a plurality of pairs of clamping arms 21 extending from the base, with cutouts formed between adjacent clamping arms 21 for connection with an electrical device.

[0028] The battery pack 100 eliminates the terminal seat, and the limiting rib 3 is provided on the first shell 101 of the battery pack 100. The limiting rib 3 is also provided with a reinforcing portion 31 to limit excessive deformation of the connecting terminal 2, thereby making the battery pack 100 more stable and reliable to plug and unplug. There is no need to install the terminal seat, making assembly more convenient and greatly improving work efficiency.

[0029] It should be understood that the drawings illustrate exemplary embodiments in detail, and it should be understood that the present application is not limited to the details or methods set forth in the specification or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered as limiting.

[0030] In view of this specification, further modifications and alternative embodiments of various aspects of the present invention will be obvious to those skilled in the art. Therefore, this description should be interpreted as being illustrative only. The configurations and arrangements shown in various exemplary embodiments are illustrative only. Although only some embodiments are described in detail in this disclosure, many modifications (e.g., variations in the size, dimensions, structure, shape and proportion of various elements, the value of parameters, the installation arrangement, the use of materials, colors, orientations, etc.) can be made without substantially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as being integrally formed can be constructed of multiple parts or elements, the position of the elements can be reversed or otherwise changed, and the nature or number or position of discrete elements can be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm or method steps can be changed or reordered. Other replacements, modifications, changes and omissions can also be made to the design, operating conditions and arrangements of various exemplary embodiments without departing from the scope of the present invention.

[0031] Although the current application describes a specific combination of features in the appended claims, various embodiments of the present invention are directed to any combination of any of the features described herein, regardless of whether such a combination is currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.

[0032] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the drawings are drawn to scale. Actual measurements of the drawings will disclose the relative dimensions, angles, and ratios of the various exemplary embodiments. The various exemplary embodiments extend to various ranges around absolute and relative dimensions, angles, and ratios that can be determined from the drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the drawings. In addition, actual dimensions that are not explicitly stated in this specification can be determined by using the ratios of the dimensions measured in the drawings in conjunction with the explicit dimensions stated in this specification.

Claims

1. A battery pack, comprising: The housing comprises a first housing and a second housing assembled into one body; A battery cell group, comprising a plurality of battery cells, wherein the battery cell group is located in a receiving space formed by the first shell and the second shell; A tool interface, formed on the first housing, for detachably connecting to an electrical device; A plurality of connection terminals, exposed at the tool interface, through which the battery pack outputs the electrical energy of the battery cell group; Wherein, the first shell includes a plurality of limiting ribs, and the limiting ribs are arranged on the tool interface and configured to support the connecting terminal.

2. The battery pack according to claim 1, characterized in that: The battery pack includes a circuit board, and the connection terminal is electrically connected to the circuit board.

3. The battery pack according to claim 1, characterized in that: The tool interface includes an outer surface and an inner wall surface, the outer surface is formed as a docking surface with the electrical equipment, the inner wall surface faces the battery cell group, and the limiting ribs extend from the inner wall surface toward the accommodating space.

4. The battery pack according to claim 1, characterized in that: Each connecting terminal is located within two adjacent limiting ribs, and the two adjacent limiting ribs support the connecting terminal.

5. The battery pack according to claim 3, characterized in that: The gap between the limiting rib and the connecting terminal is 0.2-0.8 mm.

6. The battery pack according to claim 5, characterized in that: The limiting rib comprises a main body and a reinforcing portion extending from the main body, and the reinforcing portion is connected to the main body and the inner wall.

7. The battery pack according to claim 6, characterized in that: The tool interface includes a terminal slot, and the reinforcement portion extends into the terminal slot toward the terminal slot.

8. The battery pack according to claim 6, characterized in that: The connecting terminal comprises a power terminal, and the power terminal comprises a base and a plurality of pairs of clamping arms extending from the base, with cutouts formed between adjacent clamping arms.

Images