Connecting piece, battery and electric device

Abstract

The utility model provides a connecting piece, a battery and an electric device. The connecting piece comprises a main body part used for being electrically connected with the output electrode; the pin section is obliquely arranged relative to the main body part in the direction far away from the electrode assembly and is used for being electrically connected with a tab of the electrode assembly; and the torsion section is spiral and is respectively connected with the main body part and the pin section. The electrode assembly solves the problem that the tabs of the electrode assembly in the prior art are easy to inversely insert.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a connecting piece, a battery and an electrical device. Background Art

[0002] Currently, prismatic aluminum-cased batteries are widely used in the market. Typically, the tabs of prismatic aluminum-cased batteries are extended from the top and welded to the connecting tab. The other end of the connecting tab is then laser-welded to the terminal post on the top cover. However, existing tabs are typically welded underneath the connecting tab and are designed to be relatively long. After ultrasonic welding of the tabs to the connecting tabs, the tab edges can sag or, under pressure, dig into the electrode assembly, causing micro-shorts and affecting the quality of the electrode assembly.

[0003] As can be seen from the above, the related art has the problem that the tabs of the electrode assembly are easily inserted upside down. Utility Model Content

[0004] The main purpose of the utility model is to provide a connecting piece, a battery and an electrical device to solve the problem in the related art that the tabs of the electrode assembly are easily inserted upside down.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a connecting piece is provided, including: a main body portion, which is used to be electrically connected to the output pole; a pin segment, which is inclined relative to the main body portion in a direction away from the electrode assembly and is used to be electrically connected to the electrode ear of the electrode assembly; and a torsion segment, which is spirally shaped and is respectively connected to the main body portion and the pin segment.

[0006] Furthermore, there are a plurality of pin segments, which are spaced apart and grouped in pairs to form at least one group, and each pin segment extends outward from the same side of the main body.

[0007] Furthermore, the two lead segments in each group are symmetrically arranged, and the sides close to each other are away from the electrode assembly.

[0008] Specification PN280431HWYWLN further states that the angle α between the two pin segments in each group is 150° to 179°.

[0009] Furthermore, the two pin segments in each group are arranged in parallel.

[0010] Furthermore, the included angle between the pin segment 20 and the main body 10 is 0.5° to 15°.

[0011] Furthermore, the length of the pin segment is 10 mm to 50 mm.

[0012] According to another aspect of the present invention, a battery is provided, comprising an output pole, an electrode assembly, and the above-mentioned connecting piece, wherein the main body is electrically connected to the output pole, and the lead segment is electrically connected to the tab of the electrode assembly.

[0013] Furthermore, the tab is electrically connected to a side of the lead segment facing away from the electrode assembly.

[0014] Furthermore, there are multiple pin segments, which are arranged at intervals and in pairs to form at least one group. The two pin segments in each group are symmetrically arranged, and the bending directions of the two groups of tabs of the corresponding electrode assembly are relatively arranged.

[0015] Furthermore, there are multiple pin segments, which are arranged at intervals and in pairs to form at least one group. The two pin segments in each group are arranged in parallel, and the bending directions of the two groups of tabs of the corresponding electrode assembly are the same.

[0016] Furthermore, the connecting piece includes a positive electrode connecting piece and a negative electrode connecting piece, and the thickness of the positive electrode connecting piece is 0.5 mm to 2 mm; and / or the thickness of the negative electrode connecting piece is 0.5 mm to 1.5 mm.

[0017] According to another aspect of the present invention, there is provided an electrical device comprising the above-mentioned battery.

[0018] By applying the technical solution of the present invention, the connecting piece includes a main body, a pin segment and a torsion segment. The main body is used to be electrically connected to the output pole. The pin segment is tilted relative to the main body in a direction away from the electrode assembly and is used to be electrically connected to the pole ear of the electrode assembly. The torsion segment is spirally connected to the main body and the pin segment, respectively. In this way, by tilting the pin segment in a direction away from the electrode assembly, the distance between the pin segment and the electrode assembly is increased, thereby increasing the distance between the pole ear and the electrode assembly after welding, and changing the tilt direction of the pole ear edge, so that the pole ear edge can be away from the electrode assembly, preventing the pole ear edge from sagging, and avoiding the pole ear edge from being inserted into the electrode assembly due to sagging or external force, thereby solving the problem that the pole ear of the electrode assembly is easily inserted upside down in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic structural diagram showing an angle of a connecting piece according to a specific embodiment of the present utility model; and

[0021] Figure 2 A schematic structural diagram showing another angle of a connecting piece according to a specific embodiment of the present utility model is shown;

[0022] Figure 3A structural schematic diagram showing another angle of a connecting piece according to a specific embodiment of the utility model is shown;

[0023] Figure 4 A schematic diagram of the internal structure of a battery according to a specific embodiment of the present utility model is shown;

[0024] Figure 5 A schematic structural diagram of a connecting piece according to another specific embodiment of the present utility model is shown;

[0025] Figure 6 The figure shows a schematic structural diagram of an electric device according to a specific embodiment of the present utility model.

[0026] The above drawings include the following reference numerals:

[0027] 10. Main body; 20. Pin segment; 30. Output pole; 40. Electrode assembly; 41. Tab; 50. Torsion segment; 100. Battery; 1000. Electrical device.

[0028] Instruction manual PN280431HWYWLN DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0032] Instruction manual PN280431HWYWLN

[0033] To address the problem of electrode tabs being easily inserted upside down in related art, the present invention provides a connecting piece, a battery, and an electrical device. The battery described below includes the connecting piece described below. The electrical device described below includes the battery described below.

[0034] like Figures 1 to 4 As shown, the connecting piece includes a main body 10, a lead segment 20, and a torsion segment 50. The main body 10 is used to electrically connect to the output electrode 30. The lead segment 20 is arranged at an angle relative to the main body 10, away from the electrode assembly 40, and is used to electrically connect to the electrode tab 41 of the electrode assembly 40. The torsion segment 50 is spirally connected to the main body 10 and the lead segment 20.

[0035] The connecting piece includes a main body 10, a pin segment 20 and a torsion segment 50. The main body 10 is used to electrically connect to the output pole 30. The pin segment 20 is tilted relative to the main body 10 in a direction away from the electrode assembly 40 and is used to electrically connect to the pole ear 41 of the electrode assembly 40. The torsion segment 50 is spiral-shaped and is connected to the main body 10 and the pin segment 20 respectively. In this way, by tilting the pin segment 20 in a direction away from the electrode assembly 40, the distance between the pin segment 20 and the electrode assembly 40 is increased, and then the distance between the pole ear 41 and the electrode assembly 40 after welding is increased, and the tilt direction of the pole ear edge is changed, so that the pole ear edge can be away from the electrode assembly 40, preventing the pole ear edge from sagging, and avoiding the pole ear edge from sagging or being inserted into the electrode assembly 40 due to external force.

[0036] Specifically, the main body 10, the torsion section 50 and the pin section 20 are connected in sequence. It can be understood that the torsion section 50 is an intermediate transition section that is twisted into a spiral shape so that the pin section 20 can tilt upward relative to the main body 10.

[0037] It should be noted that the tab edge is the end of the tab 41 away from the electrode assembly 40 .

[0038] In this embodiment, there are multiple pin segments 20, which are spaced apart and grouped in pairs to form at least one group. Each pin segment 20 extends outward from the same side of the main body 10. Preferably, the number of pin segments 20 is 2 to 6.

[0039] Specifically, the following describes the technical solution of this application using an example of two lead segments 20 forming a group, i.e., correspondingly connected to the winding core of an electrode assembly 40. Of course, the number of lead segments 20 can be greater, such as four or six, meaning that the electrode assembly 40 has two or three winding cores, with each group of lead segments 20 corresponding to each winding core. The number can be selected based on actual needs.

[0040] It can be understood that the connecting piece in this embodiment is U-shaped, and the two lead segments 20 extend outward from both ends of the same side of the main body 10, so as to be arranged at intervals and electrically connected to the two groups of tabs 41 of the electrode assembly 40 respectively.

[0041] In this embodiment, the main body 10 and the output pole 30, as well as the lead segment 20 and the tab 41, are welded. Specifically, the main body 10 and the output pole 30 are welded by laser welding, and the lead segment 20 and the tab 41 are welded by ultrasonic welding.

[0042] In this embodiment, if Figure 3 As shown, the two lead segments 20 in each group are symmetrically arranged, and the sides close to each other are away from the electrode assembly 40. In other words, the two lead segments 20 are relatively inclined upward, and when viewed from the side, the cross-section of the two lead segments 20 in this embodiment is in an eight-shaped shape.

[0043] In this embodiment, if Figure 3 As shown, the angle α between the two pin segments 20 in each group is 150° to 179°. In other words, the angle between each pin segment 20 and the vertical plane in this embodiment is 75° to 89.5°, or the angle between each pin segment 20 and the horizontal plane (i.e., the angle at which the pin segment 20 is lifted upward) is 0.5° to 15°. The main body 10 in this embodiment is horizontally arranged, and the angle between the pin segment 20 and the horizontal plane is also the angle between the pin segment 20 and the main body 10. With the above arrangement, the space occupied by the connecting piece in the height direction can be reduced as much as possible while avoiding the inverted insertion of the tab as much as possible, thereby avoiding the battery from being too large.

[0044] In the present embodiment, the length of the pin segment 20 is 10mm to 50mm. With the above arrangement, the space occupied by the connecting tab in the horizontal direction is reduced as much as possible while ensuring that the pin segment 20 is sufficiently welded to the tab 41, preventing the positive and negative connecting tabs from coming into contact and shorting out.

[0045] In an alternative embodiment, as shown in Figure 5 , the two pin segments 20 in each group are arranged in parallel. That is, the two pin segments 20 are inclined upward toward the same side. Specifically, the angle between the pin segment 20 and the main body 10 is 0.5° to 15°, i.e., the angle at which the pin segment 20 is raised upward.

[0046] In the present embodiment, the forming method of the connecting tab can include two types:

[0047] (1) The two pin segments 20 of the connecting tab are directly formed into an obtuse angle by stamping;

[0048] (2) The connecting tab is supplied in a flat state, and after ultrasonic welding of the pin segment 20 to the tab 41, a shaping process is performed to bend the pin segment 20 upward into an inclined shape.

[0049] As shown in Figure 4 , the present application also provides a battery comprising a shell, a top cover, a lower plastic, an output pole 30, an electrode assembly 40, and the above-mentioned connecting tab. The electrode assembly 40 is accommodated in the shell, and the top cover is connected to the top of the shell to seal the opening at the top of the shell. The main body 10 is electrically connected to the output pole 30, and the output pole 30 is fixedly connected to the top cover. The pin segment 20 is electrically connected to the tab 41 of the electrode assembly 40. The lower plastic is located between the top cover and the connecting tab, and is used to insulate the tab 41 from the top cover.

[0050] In the present embodiment, as shown in Figure 4 , the tab 41 can be welded to the lower side of the pin segment 20 as in the prior art. In a preferred embodiment, the tab 41 is electrically connected to the side of the pin segment 20 that faces away from the electrode assembly 40. That is, the tab 41 is electrically connected to the upper side of the pin segment 20 that faces away from the electrode assembly 40. By welding the tab 41 to the upper side of the pin segment 20, the tab edge is clamped between the connecting tab and the lower plastic, thereby being further away from the electrode assembly 40, and the pressing force of the connecting tab edge on the bent portion of the tab 41 can be solved, preventing damage to the tab 41.

[0051] In the present embodiment, the two pin segments 20 in each group are symmetrically arranged, and the bending directions of the two groups of tabs 41 of the corresponding electrode assembly 40 are oppositely arranged. Specifically, as shown in Figure 4 , the two groups of tabs 41 of the electrode assembly 40 are bent inward from both sides,

[0052] In an optional embodiment, the two lead segments 20 in each group are arranged in parallel, and the two sets of tabs 41 of the corresponding electrode assembly 40 are bent in the same direction. Specifically, the two sets of tabs 41 of the electrode assembly 40 are bent in the same direction, for example, both toward the right or toward the left.

[0053] In this embodiment, the connecting piece includes a positive connecting piece and a negative connecting piece. Correspondingly, the output pole 30 includes a positive output pole and a negative output pole. The positive connecting piece is welded to the positive output pole and the positive pole tab respectively, and the negative connecting piece is welded to the negative output pole and the negative pole tab respectively, thereby leading out the positive and negative poles of the battery respectively.

[0054] In this embodiment, the thickness of the positive electrode connecting tab is greater than or equal to the thickness of the negative electrode connecting tab. Specifically, the thickness of the positive electrode connecting tab is 0.5 mm to 2 mm. The thickness of the negative electrode connecting tab is 0.5 mm to 1.5 mm. This arrangement ensures that the current flow capacity of each of the positive and negative electrode connecting tabs can be guaranteed.

[0055] like Figure 6 As shown, the present application also provides an electric device 1000, including the above-mentioned battery 100. The battery 100 described in the embodiment of the present application is applicable to various electric devices 1000 using the battery 100. Specifically, the electric device 1000 can be a mobile phone, a portable device, a laptop computer, a vehicle, a ship, a spacecraft, an electric toy, an electric tool, etc. The embodiment of the present application does not impose any special restrictions on the above-mentioned electric device 1000.

[0056] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by setting a connecting piece including a main body 10, a pin segment 20 and a torsion segment 50, the main body 10 is used to electrically connect with the output pole 30, and the pin segment 20 is tilted relative to the main body 10 in a direction away from the electrode assembly 40, and is used to electrically connect with the pole ear 41 of the electrode assembly 40, and the torsion segment 50 is spirally connected to the main body 10 and the pin segment 20 respectively. In this way, by tilting the pin segment 20 in a direction away from the electrode assembly 40, the distance between the pin segment 20 and the electrode assembly 40 is increased, and then the distance between the pole ear 41 and the electrode assembly 40 after welding is increased, and the tilt direction of the pole ear edge is changed, so that the pole ear edge can be away from the electrode assembly 40, preventing the pole ear edge from sagging, and avoiding the pole ear edge from sagging or being inserted into the electrode assembly 40 due to external force.

[0057] Instruction manual PN280431HWYWLN

[0058] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A connecting piece, characterized in that: include: A main body (10) for electrically connecting to an output pole (30); a lead segment (20), the lead segment (20) being arranged obliquely relative to the main body (10) in a direction away from the electrode assembly (40), and being used for electrically connecting to the tab (41) of the electrode assembly (40); The torsion section (50) is spiral-shaped and is respectively connected to the main body (10) and the pin section (20).

2. The connecting piece according to claim 1, characterized in that There are a plurality of pin segments (20), which are arranged at intervals and form at least one group in pairs, and each pin segment (20) extends outward from the same side of the main body (10).

3. The connecting piece according to claim 2, characterized in that: The two lead segments (20) in each group are symmetrically arranged, and the sides close to each other are away from the electrode assembly (40).

4. The connecting piece according to claim 3, characterized in that The included angle α between the two pin segments (20) in each group is 150° to 179°.

5. The connecting piece according to claim 2, characterized in that: The two pin segments (20) in each group are arranged in parallel.

6. The connecting piece according to claim 5, characterized in that The included angle between the pin segment (20) and the main body (10) is 0.5° to 15°.

7. The connecting piece according to any one of claims 1 to 6, characterized in that The length of the pin segment (20) is 10 mm to 50 mm.

8. A battery, characterized in that: It comprises an output pole (30), an electrode assembly (40), and a connecting piece according to any one of claims 1 to 7, wherein the main body (10) is electrically connected to the output pole (30), and the lead segment (20) is electrically connected to the tab (41) of the electrode assembly (40).

9. The battery according to claim 8, characterized in that The electrode tab (41) is electrically connected to a side of the lead segment (20) facing away from the electrode assembly (40).

10. The battery according to claim 8, characterized in that There are a plurality of pin segments (20), and the plurality of pin segments (20) are arranged at intervals and in pairs to form at least one group. The two pin segments (20) in each group are symmetrically arranged, and the bending directions of the two groups of tabs (41) of the corresponding electrode assembly (40) are arranged oppositely.

11. The battery according to claim 8, characterized in that There are a plurality of pin segments (20), the plurality of pin segments (20) are arranged at intervals and are grouped in pairs to form at least one group, the two pin segments (20) in each group are arranged in parallel, and the two groups of tabs (41) of the corresponding electrode assembly (40) have the same bending direction.

12. The battery according to claim 8, characterized in that The connecting piece includes a positive connecting piece and a negative connecting piece, The thickness of the positive electrode connecting piece is 0.5 mm to 2 mm; and / or The thickness of the negative electrode connecting piece is 0.5 mm to 1.5 mm.

13. An electrical device, characterized in that: A battery comprising the battery according to any one of claims 8 to 12.

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