Lithium battery component capable of reducing resistance

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a lithium battery component capable of reducing resistance, which comprises a rectangular battery body, and at least one positive conductive terminal and at least one negative conductive terminal which are respectively arranged at the end parts of two sides with longer perimeter of the rectangular battery body, when the number of the positive electrode conductive terminal and the negative electrode conductive terminal is single, the positive electrode conductive terminal and the negative electrode conductive terminal are electrically connected with the rectangular battery body through connecting pieces respectively; when the number of the positive electrode conductive terminals and the number of the negative electrode conductive terminals are multiple, the transmission path of current in the battery is greatly shortened, so that the internal resistance of the battery is effectively reduced, the multiple conductive terminals are connected together at the same end in a welding mode and the like, the continuity of current transmission is ensured, and the service life of the battery is prolonged. And the transmission efficiency of the current is further enhanced, so that the battery can provide electric energy more efficiently, and the battery can show more excellent performance under the occasions of high-power output and rapid charging and discharging.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a lithium battery component that reduces resistance. Background Technology

[0002] Traditional battery designs often place the positive and negative conductive terminals on the same side surface or both sides, such as common cylindrical batteries (e.g., traditional AAA batteries), which typically have the conductive terminals at both ends. While this design facilitates battery stacking and series connection, in certain applications, especially those requiring high power output and rapid charging / discharging, the battery's resistivity can become a critical factor limiting performance. Because the conductive terminals are concentrated on one or both ends, the current travel path within the battery may be longer, leading to increased resistance and thus affecting the battery's rate performance and output power. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a lithium battery component with reduced resistance, including a rectangular battery body. Positive and negative conductive terminals are respectively provided on the two ends with a longer perimeter of the rectangular battery body. The number of positive and negative conductive terminals is at least one. When the number of positive and negative conductive terminals is one, each is electrically connected to the rectangular battery body through a connecting piece. When the number of positive and negative conductive terminals is multiple, multiple positive conductive terminals are connected to the rectangular battery body at the same end through their respective connecting pieces, and multiple negative conductive terminals are also connected to the rectangular battery body at the same end through their respective connecting pieces. The multiple conductive terminals are connected together by welding. The connecting piece is a metal sheet with good conductivity, and its shape and size are adapted to the corresponding positive or negative conductive terminal.

[0004] Furthermore, the positions of the positive and negative conductive terminals on the rectangular battery body are symmetrical about the central axis of the rectangular battery body.

[0005] Furthermore, when there are multiple positive and negative conductive terminals, the multiple conductive terminals are evenly distributed on the same end.

[0006] Furthermore, each conductive terminal is connected to the rectangular battery body via an independent connecting piece.

[0007] Furthermore, the connecting piece and the conductive terminal are fixedly connected by means of welding, riveting or crimping.

[0008] Furthermore, the connecting piece is made of one of the following metal materials: copper, aluminum, silver, or nickel-plated copper.

[0009] Furthermore, the welding between the conductive terminal and the connecting piece is performed using one of the following methods: laser welding, ultrasonic welding, or resistance welding.

[0010] The beneficial effects of this utility model are as follows: By setting positive and negative conductive terminals on the two sides of the longer perimeter of the rectangular battery body, and when there are multiple conductive terminals, they are evenly distributed on the same end and connected to the battery body through their respective connecting pieces, which greatly shortens the current transmission path inside the battery, thereby effectively reducing the internal resistance of the battery. Multiple conductive terminals are connected together on the same end by welding or other methods, which not only ensures the continuity of current transmission, but also further enhances the current transmission efficiency, enabling the battery to provide electrical energy more efficiently. The battery can exhibit better performance in high-power output and fast charging and discharging applications. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0012] Among them, 1. Rectangular battery body; 2. Positive conductive terminal; 3. Negative conductive terminal. Detailed Implementation

[0013] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0014] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] In the embodiments, by Figure 1 Provided is a lithium battery component for reducing resistance, comprising a rectangular battery body 1. Positive conductive terminals 2 and negative conductive terminals 3 are respectively disposed on the two longer ends of the rectangular battery body 1. The number of positive conductive terminals 2 and negative conductive terminals 3 is at least one. When there is only one positive conductive terminal 2 and one negative conductive terminal 3, each is electrically connected to the rectangular battery body 1 via a connecting piece. When there are multiple positive conductive terminals 2 and multiple negative conductive terminals 3, multiple positive conductive terminals 2 are connected to the rectangular battery body 1 at the same end via their respective connecting pieces, and multiple negative conductive terminals 3 are also connected to the rectangular battery body 1 at the same end via their respective connecting pieces. The multiple conductive terminals are connected together by welding. The connecting piece is a metal sheet with good conductivity, and its shape and size correspond to the corresponding... Positive conductive terminal 2 or negative conductive terminal 3 are matched. Positive conductive terminal 2 and negative conductive terminal 3 are respectively provided on both sides of the long side of the rectangular battery body 1. Each conductive terminal is electrically connected to the rectangular battery body 1 through a special connecting piece to ensure that the current can flow smoothly into or out of the rectangular battery body 1. When the number of conductive terminals increases to multiple, each terminal will be connected to the battery body through an independent connecting piece. At the same time, these multiple conductive terminals located at the same end will also be connected to each other by welding or other methods to form a parallel current transmission network. This not only increases the cross-sectional area of ​​current transmission, but also effectively disperses the current path, thereby significantly reducing the internal resistance of the battery. By optimizing the layout and connection method of the conductive terminals, an efficient and low-resistance current transmission is constructed, thereby reducing the internal resistance of the battery and improving battery performance.

[0017] Reference Figure 1 The positions of the positive conductive terminal 2 and the negative conductive terminal 3 on the rectangular battery body are symmetrical about the central axis of the rectangular battery body 1.

[0018] With the above structural arrangement, the positive conductive terminal 1 and the negative conductive terminal 2 are arranged in a centrally symmetrical manner on the rectangular battery body 1, which is not only aesthetically pleasing, but also helps to achieve a more balanced transmission of current inside the battery.

[0019] Reference Figure 1 When there are multiple positive conductive terminals 2 and multiple negative conductive terminals 3, the multiple conductive terminals are evenly distributed on the same end;

[0020] Reference Figure 1 Each conductive terminal is connected to the rectangular battery body 1 via an independent connecting piece;

[0021] Reference Figure 1The connecting piece and the conductive terminal are fixedly connected by welding, riveting or pressing, and the connecting piece is made of one of the following metal materials: copper, aluminum, silver or nickel-plated copper.

[0022] With the above structural design, the connecting piece serves as a bridge between the conductive terminal and the rectangular battery body 1. To ensure smooth and stable current transmission, reliable connection methods such as welding, riveting, or crimping are used between the connecting piece and the conductive terminal. This not only provides strong mechanical connection force, ensuring a tight fit between the connecting piece and the conductive terminal, but also achieves good electrical connection through direct metal-to-metal contact, thereby reducing contact resistance. The connecting piece uses metal materials with excellent conductivity, such as copper, aluminum, silver, or nickel-plated copper, which not only have good conductivity and can efficiently transmit current, but also have excellent corrosion resistance and mechanical strength, ensuring the stability and reliability of the connecting piece during long-term use.

[0023] Reference Figure 1 The connection between the conductive terminal and the connecting piece is achieved by one of the following methods: laser welding, ultrasonic welding, or resistance welding.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery component with reduced resistance, characterized in that: The battery includes a rectangular battery body (1). Positive conductive terminals (2) and negative conductive terminals (3) are respectively provided on the two ends of the rectangular battery body (1) with a longer perimeter. The number of positive conductive terminals (2) and negative conductive terminals (3) is at least one. When the number of positive conductive terminals (2) and negative conductive terminals (3) is a single one, they are electrically connected to the rectangular battery body (1) through connecting pieces. When the number of positive conductive terminals (2) and negative conductive terminals (3) is multiple, multiple positive conductive terminals (2) are connected to the rectangular battery body (1) at the same end through their respective connecting pieces, and multiple negative conductive terminals (3) are also connected to the rectangular battery body (1) at the same end through their respective connecting pieces. The multiple conductive terminals are connected together by welding. The connecting piece is a metal sheet, and its shape and size are adapted to the corresponding positive conductive terminal (2) or negative conductive terminal (3).

2. A lithium battery component for reducing resistance according to claim 1, characterized in that: The positions of the positive conductive terminal (2) and the negative conductive terminal (3) on the rectangular battery body are symmetrical about the central axis of the rectangular battery body (1).

3. A lithium battery component for reducing resistance according to claim 1, characterized in that: When there are multiple positive conductive terminals (2) and multiple negative conductive terminals (3), the multiple conductive terminals are evenly distributed on the same end.

4. A lithium battery component for reducing resistance according to claim 1, characterized in that: Each conductive terminal is connected to the rectangular battery body (1) via an independent connecting piece.

5. A lithium battery component for reducing resistance according to claim 1, characterized in that: The connecting piece and the conductive terminal are fixedly connected by welding, riveting or pressing.

6. A lithium battery component for reducing resistance according to claim 1, characterized in that: The connecting piece is made of one of the following metal materials: copper, aluminum, silver, or nickel-plated copper.

7. A lithium battery component for reducing resistance according to claim 1, characterized in that: The connection between the conductive terminal and the connecting piece is made by one of the following methods: laser welding, ultrasonic welding, or resistance welding.

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