Battery pack structure and battery device

Abstract

The battery pack structure comprises a battery group, a connecting piece and a limiting fixing plate, the battery group comprises a plurality of battery pieces, one of the positive poles of two adjacent battery pieces is arranged adjacent to the negative pole of the other battery piece, one end of the connecting piece is electrically connected to the positive pole of one battery piece, the second end of the connecting piece is electrically connected to the negative pole of the other battery piece, the limiting fixing plate is provided with a limiting opening, the connecting piece is provided with a limiting protrusion, and the limiting protrusion is fixedly arranged in the limiting opening. The limiting opening is arranged in the limiting fixing plate, the limiting protrusion of the battery piece is clamped in the limiting opening, and then the connecting piece can be prevented from moving in the process of the battery group, so that the battery piece is prevented from deviating due to shaking. It is ensured that the connecting piece can stably connect two adjacent battery pieces, and stable current output is provided for the battery pack.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery assembly, and in particular to a battery pack structure and battery device. Background Technology

[0002] In the production and use of battery packs, especially those composed of multiple battery components (such as cylindrical cells, battery modules, etc.) connected in series, the stability of the arrangement and connection of the battery components is crucial.

[0003] Currently, when battery cells are connected in series in a battery pack, simple conductive connectors are typically used to directly connect the electrodes of adjacent battery cells. However, this connection method has several problems. Firstly, the lack of an effective structure to precisely constrain the relative positions of the battery cells means that when the battery pack is subjected to external forces such as vibration, the battery cells are prone to displacement, leading to loose connections. This can affect the normal conductivity of the battery pack and even cause safety hazards such as short circuits. Secondly, battery cells undergo volume changes during charging and discharging; for example, lithium batteries experience cell expansion during charging and discharging. The connections between battery cells are easily stretched, which can damage the connecting components and shorten the battery pack's lifespan. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a battery pack structure and battery device with a stable connection between battery components.

[0005] The purpose of this disclosure is achieved through the following technical solution: A battery pack structure includes a battery pack and a connector. The battery pack includes a plurality of battery cells. The positive terminal of one of two adjacent battery cells is disposed adjacent to the negative terminal of the other battery cell. A first end of the connector is electrically connected to the positive terminal of one battery cell, and a second end of the connector is electrically connected to the negative terminal of the other battery cell. The battery pack structure also includes a limiting and fixing plate, which has a limiting opening, and the connector has a limiting protrusion, which is fixedly disposed in the limiting opening.

[0006] In one embodiment, the number of connectors is multiple, with a first end of one connector connected to one of the battery components and a second end of one connector connected to another battery component.

[0007] In one embodiment, there are multiple limiting ports, with one limiting port adjacent to another, and one connector corresponding to one limiting port.

[0008] In one embodiment, the connector includes a first connecting portion, a second connecting portion, and a limiting protrusion. The first connecting portion is connected to one end of one of the battery components. The two ends of the limiting protrusion are respectively connected to the first connecting portion and the second connecting portion. The second connecting portion is connected to one end of another battery component. The limiting protrusion is disposed at the limiting opening.

[0009] In one embodiment, the limiting protrusion is adapted to the limiting opening.

[0010] In one embodiment, the limiting fixing plate has four fixing holes, which penetrate the battery module and are diagonally opposite to each other.

[0011] In one embodiment, the battery pack structure further includes a first battery bracket and a second battery bracket. The first battery bracket is disposed at one end of the battery pack, and the second battery bracket is disposed at the second end of the battery pack. The first battery bracket has a plurality of first mounting holes, and one end of a battery component is mounted in the first mounting hole. The second battery bracket has a plurality of second mounting holes, and the other end of a battery component is mounted in the second mounting hole.

[0012] In one embodiment, the limiting and fixing plate is an integrally formed structure.

[0013] A battery device comprising the battery pack structure described in any of the above embodiments.

[0014] Compared with the prior art, this disclosure has at least the following advantages: The battery pack is composed of multiple battery components. One battery component is positioned adjacent to and electrically connected to another battery component. One end of a connector is electrically connected to one battery component, and the other end is electrically connected to another battery component, thus connecting two adjacent battery components in series. This allows the battery pack to provide a stable current output. A limiting and fixing plate is welded to the end face of the battery pack near the connector, allowing the limiting and fixing plate to be fixed to the end face of the battery assembly. A limiting port is provided on the limiting and fixing plate, and the limiting protrusion of the battery component engages with the limiting port. This prevents the battery component from shifting due to shaking during battery pack movement, thus avoiding loosening or displacement of the connector due to shaking of the battery component. This ensures that the connector can stably connect two adjacent battery components in series, providing a stable current output for the battery pack. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a battery pack structure according to an embodiment of the present disclosure; Figure 2 This is an exploded view of a battery pack structure according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram of the connector of a battery pack structure according to an embodiment of the present disclosure.

[0017] Reference numerals: 10, battery pack structure; 100, battery pack; 110, battery component; 200, connector; 210, first connecting part; 220, second connecting part; 230, limiting protrusion; 300, limiting fixing plate; 310, limiting opening; 320, fixing hole; 400, first battery bracket; 410, first mounting hole; 500, second battery bracket; 510, second mounting hole. Detailed Implementation

[0018] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 3 As shown, a battery pack structure 10 of one embodiment includes a battery pack 100, a connector 200, and a limiting and fixing plate 300. The battery pack 100 includes a plurality of battery components 110. The positive terminal of one of two adjacent battery components 110 is disposed adjacent to the negative terminal of the other battery component 110. One end of the connector 200 is electrically connected to the positive terminal of one battery component 110, and the second end of the connector 200 is electrically connected to the negative terminal of the other battery component 110. The limiting and fixing plate 300 has a limiting opening 310, and the connector 200 has a limiting protrusion, which is fixedly disposed in the limiting opening 310.

[0022] In this embodiment, the battery pack 100 is composed of multiple battery components 110. One battery component 110 is disposed adjacent to and electrically connected to another battery component 110. One end of the connector 200 is electrically connected to one battery component 110, and the other end of the connector 200 is electrically connected to another battery component 110. This allows two adjacent battery components 110 to be connected in series through the connector 200, thereby enabling the battery pack 100 to provide a stable current output. The limiting and fixing plate 300 is welded to the end face of the battery pack 100 near the connector 200, thereby enabling... The limiting and fixing plate 300 can be fixed to the end face of the battery pack 100. At the same time, a limiting port 310 is opened in the limiting and fixing plate 300. The limiting protrusion 230 of the battery component 110 is snapped into the limiting port 310, so that the connector 200 can pass through the limiting port 310 to prevent the battery component 110 from shifting due to shaking during the movement of the battery pack 100. This avoids the connector 200 from becoming loose or displaced due to shaking of the battery component 110, and ensures that the connector 200 can stably connect two adjacent battery components 110 in series, providing a stable current output for the battery pack.

[0023] See Figure 2 and Figure 3 In one embodiment, there are multiple connectors 200, with one first end of a connector 200 connected to one battery cell 110 and the second end of a connector 200 connected to another battery cell 110. It can be understood that the arrangement of multiple connectors 200 is adapted to the number of battery cells 110 connected in series in the battery pack 100. If the battery pack 100 consists of multiple battery cells 110 arranged in a straight line or matrix to form a series circuit, a continuous series conductive path is formed, ensuring that the total voltage of the battery pack 100 can be stably superimposed, meeting the power supply voltage requirements of large equipment.

[0024] See Figure 2 and Figure 3 In one embodiment, there are multiple limiting ports 310, with one limiting port 310 adjacent to another, and one connector 200 correspondingly disposed at one limiting port 310. It can be understood that by providing multiple limiting ports 310 on the limiting fixing plate 300, and simultaneously providing one connector 200 correspondingly at one limiting port 310, each connector 200 connected in series with two battery components 110 can be correspondingly disposed at one limiting port 310. This ensures that when multiple connectors 200 are connected in series with two battery components 110, each connector 200 is positioned at a corresponding limiting port 310, preventing displacement caused by a single connector 200 not being positioned at a limiting port 310.

[0025] See Figure 1 , Figure 2 and Figure 3 Furthermore, the connector 200 includes a first connecting portion 210, a second connecting portion 220, and a limiting protrusion 230. The first connecting portion 210 is connected to one end of one of the battery components 110, the second connecting portion 220 is connected to one end of another battery component 110, and the two ends of the limiting protrusion 230 are respectively connected to the first connecting portion 210 and the second connecting portion 220. The limiting protrusion 230 is disposed at the limiting opening 310. It can be understood that by setting the connector 200 as a three-section integrated structure of the first connecting portion 210, the second connecting portion 220, and the limiting protrusion 230, it can not only accurately realize the electrical connection of adjacent battery components 110, but also strengthen the structural constraint through the cooperation of the limiting protrusion 230 and the limiting opening 310, forming a dual function of conductivity and positioning, which is suitable for the high requirements of large mechanical equipment for battery pack stability. The limiting protrusion 230 is inserted into the limiting port 310 by means of a clip. The limiting protrusion 230 and the limiting port 310 restrain each other so that the connector 200 as a whole will not shift due to shaking.

[0026] It should be noted that the connector is made of nickel-plated copper.

[0027] See Figure 1 , Figure 2 and Figure 3 Furthermore, the limiting protrusion 230 is adapted to the limiting opening 310. It can be understood that adapting the limiting protrusion 230 to the limiting opening 310 ensures that their projected shapes are identical, allowing for quick alignment and assembly of the limiting fixing plate 300 and the battery pack 100 during assembly.

[0028] See Figure 1, Figure 2 and Figure 3 In one embodiment, the limiting and fixing plate 300 has four fixing holes 320, which penetrate the battery module. One fixing hole 320 is positioned opposite to another. By providing four fixing holes 320 on the limiting and fixing plate 300 and welding it to the end face of the battery pack 100, an external connecting bracket can fix the battery pack 100 through the fixing holes 320. Furthermore, the four fixing holes 320 are arranged diagonally opposite each other, making the connection to the external connecting bracket more stable. When powering outdoor equipment, fixing the battery pack 100 through the fixing holes 320 effectively withstands mechanical impacts and environmental interference in complex outdoor environments.

[0029] See Figure 1 and Figure 2 In one embodiment, the battery pack structure 10 further includes a first battery bracket 400 and a second battery bracket 500. The first battery bracket 400 is disposed at one end of the battery pack 100, and the second battery bracket 500 is disposed at the second end of the battery pack 100. The first battery bracket 400 has a plurality of first mounting holes 410, and one end of a battery component 110 is mounted in the first mounting hole 410. The second battery bracket 500 has a plurality of second mounting holes 510, and the other end of a battery component 110 is mounted in the second mounting hole 510. It can be understood that the design of the first battery bracket 400 and the second battery bracket 500 is to position the two ends of the battery pack 100, forming a "two ends + middle" fixing system with the "middle limiting" of the limiting fixing plate 300. This structurally solves the problem of offset and shaking when multiple battery components 110 are connected in series, and is also suitable for the high-intensity working conditions of large mechanical equipment and complex outdoor environments. One end of a battery component 110 is disposed at the first mounting hole 410, and the other end of the battery component 110 is disposed at the second mounting hole 510, so that both ends of the battery component 110 are located at the first mounting hole 410 and the second mounting hole 510, so that the battery component 110 can be stably clamped between the first battery bracket 400 and the second battery bracket 500.

[0030] See Figure 1 and Figure 2 In one embodiment, the limiting and fixing plate 300 is a one-piece molded structure. It can be understood that by designing the limiting and fixing plate 300 as a one-piece molded structure and eliminating seams in the plate shape, the structural strength of the limiting and fixing plate 300 is improved. Furthermore, the limiting and fixing plate 300 is made of alloy material, which prevents deformation under external impact.

[0031] This application also provides a battery device, including the battery pack structure 10 described in any of the above embodiments. It is understood that a limiting opening 310 is provided in the limiting and fixing plate 300, and the middle portion of the battery component 110 is snapped into the limiting opening 310, thereby allowing the connector 200 to prevent the battery component 110 from shifting due to shaking during the movement of the battery pack 100. This prevents the connector 200 from becoming loose or displaced due to shaking of the battery component 110, ensuring that the connector 200 can stably connect two adjacent battery components 110 in series, providing a stable current output to the battery pack.

[0032] Compared with the prior art, this disclosure has at least the following advantages: The battery pack 100 is composed of multiple battery components 110. One battery component 110 is disposed adjacent to and electrically connected to another battery component 110. One end of the connector 200 is electrically connected to one battery component 110, and the other end of the connector 200 is electrically connected to the other battery component 110. This allows two adjacent battery components 110 to be connected in series through the connector 200, thereby enabling the battery pack 100 to provide a stable current output. The limiting and fixing plate 300 is welded to the end face of the battery pack 100 near the connector 200, thereby limiting and fixing the battery. The plate 300 can be fixed to the end face of the battery pack 100. At the same time, a limiting port 310 is opened on the limiting fixing plate 300. The limiting protrusion 230 of the battery component 110 is snapped into the limiting port 310, so that the connector 200 can pass through the limiting port 310 to prevent the battery component 110 from shifting due to shaking during the movement of the battery pack 100. This avoids the connector 200 from becoming loose or displaced due to shaking of the battery component 110, and ensures that the connector 200 can stably connect two adjacent battery components 110 in series, providing a stable current output for the battery pack.

[0033] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A battery pack structure, comprising a battery pack and connectors, wherein the battery pack includes multiple battery components; characterized in that, In a pair of adjacent battery devices, the positive terminal of one battery device is disposed adjacent to the negative terminal of the other battery device. The first end of the connector is electrically connected to the positive terminal of one battery device, and the second end of the connector is electrically connected to the negative terminal of the other battery device. The battery pack structure also includes a limiting and fixing plate, which has a limiting opening, and the connector has a limiting protrusion, which is fixedly disposed in the limiting opening.

2. The battery pack structure according to claim 1, characterized in that, The number of connectors is multiple, with the first end of one connector connected to one battery unit and the second end of one connector connected to another battery unit.

3. The battery pack structure according to claim 2, characterized in that, The number of the limiting ports is multiple, with one limiting port adjacent to another, and one connector corresponding to one limiting port.

4. The battery pack structure according to claim 3, characterized in that, The connector includes a first connecting part, a second connecting part, and a limiting protrusion. The first connecting part is connected to one end of one of the battery components, the second connecting part is connected to one end of the other battery component, and the two ends of the limiting protrusion are respectively connected to the first connecting part and the second connecting part. The limiting protrusion is disposed at the limiting opening.

5. The battery pack structure according to claim 1, characterized in that, The limiting protrusion is adapted to the limiting opening.

6. The battery pack structure according to claim 1, characterized in that, The limiting and fixing plate has four fixing holes, which penetrate the battery pack. One fixing hole is diagonally opposite to another.

7. The battery pack structure according to claim 6, characterized in that, The battery pack structure further includes a first battery bracket and a second battery bracket. The first battery bracket is disposed at one end of the battery pack, and the second battery bracket is disposed at the second end of the battery pack. The first battery bracket has a plurality of first mounting holes, and one end of a battery component is mounted in the first mounting hole. The second battery bracket has a plurality of second mounting holes, and the other end of a battery component is mounted in the second mounting hole.

8. The battery pack structure according to claim 1, characterized in that, The limiting and fixing plate is a one-piece molded structure.

9. A battery device, characterized in that, The battery pack structure includes any one of claims 1 to 8.

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