Lithium battery connection structure

Abstract

This disclosure relates to the field of lithium battery connection structure technology. One embodiment of this disclosure provides a lithium battery connection structure, which includes: a plurality of lithium battery packs and a plurality of connecting covers. The connecting covers are disposed on the top of the lithium battery packs, a protrusion is disposed on the top of the lithium battery packs, a docking assembly is disposed between the protrusion and the connecting cover, a locking block is disposed on both sides of the lithium battery packs, and a tensioning assembly is disposed between the connecting cover and the lithium battery packs. The docking assembly includes a docking sleeve, which is fitted onto the protrusion. Through holes are formed in the protrusion and on both sides of the docking sleeve. A connecting rod is inserted into the through holes. The surface of the connecting rod has a plurality of sets of external thread layers, each set of external thread layers being a pair, with one pair of external thread layers located on both sides of the docking sleeve. Through the above technical solution, the technical problem that most existing lithium battery connection structures adopt simple snap-fit ​​or bolt connection methods, which are prone to loosening under vibration, impact, and other working conditions, is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of lithium battery connection structure technology, and more specifically, to a lithium battery connection structure. Background Technology

[0002] In the field of lithium battery applications, the connection structure between lithium batteries is a key component to ensure the stable performance and safe use of the battery pack. However, traditional lithium battery connection structures generally suffer from low connection strength and poor gripping effect on lithium batteries in practical applications, which seriously affects the reliability and service life of lithium battery packs.

[0003] Most existing lithium battery connection structures use simple snap-fit ​​or bolt connections, which are prone to loosening under vibration and impact conditions. Due to design flaws, these connection structures cannot provide effective grip on the lithium battery, leading to displacement during use. For example, in scenarios involving frequent vibration, such as electric vehicles, traditional connection structures struggle to maintain stable connections, affecting not only the overall performance of the battery pack but also potentially causing safety hazards due to poor contact.

[0004] Furthermore, the gripping effect of traditional connection structures is greatly affected by human factors, making it difficult to precisely control the gripping force during installation. Insufficient gripping force during lithium battery installation leads to an unstable connection; excessive gripping force can damage the battery, resulting in direct cost losses. In addition, traditional connection structures lack adaptive adjustment capabilities, failing to adapt to the connection requirements of different lithium battery specifications. When dealing with diverse lithium batteries, frequent changes to the connection structure are necessary, further reducing production efficiency and ease of use.

[0005] With the rapid development of new energy technologies, lithium batteries are increasingly used in energy storage systems, placing higher demands on the stability and gripping effect of lithium battery connection structures. Traditional connection structures, due to problems such as "low strength, poor gripping, and weak compatibility," can no longer meet the application requirements of high-performance lithium battery packs. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a lithium battery connection structure, which solves the technical problem that most existing lithium battery connection structures adopt simple snap-fit ​​or bolt connection methods, which are prone to loosening when facing vibration, impact and other working conditions.

[0007] According to one aspect, at least one embodiment of this disclosure provides a lithium battery connection structure, including:

[0008] Several lithium battery packs and several connecting covers, the connecting covers being disposed on the top of the lithium battery packs;

[0009] A protrusion and a docking assembly, wherein the protrusion is disposed on the top of the lithium battery pack and the docking assembly is disposed between the protrusion and the connecting cover;

[0010] Several locking blocks and a tensioning assembly are provided, wherein the locking blocks are disposed on both sides of the lithium battery pack, and the tensioning assembly is disposed between the connecting cover and the lithium battery pack;

[0011] The docking assembly includes a docking sleeve disposed at the bottom of the connecting cover. The docking sleeve is fitted onto the protrusion. Through holes are provided in the protrusion and on both sides of the docking sleeve, and connecting rods are inserted into the through holes.

[0012] As a further technical solution, the surface of the connecting rod is provided with several sets of external thread layers, each set of external thread layers is a pair, and the pair of external thread layers are located on both sides of the mating sleeve. A first nut is screwed onto the external thread layer, and the first nut is pressed against the side surface of the mating sleeve.

[0013] As a further technical solution, the tensioning assembly includes several pairs of clamps, which are attached to both sides of the lithium battery pack. Several positioning holes are opened on the surface of the clamps, and the positioning holes are fitted onto the protrusions.

[0014] As a further technical solution, grooves are provided at both ends of the top of the connecting cover, a hanging rod is provided in the groove, a connecting ear is fitted on the hanging rod, a pair of screws are provided at the bottom of the connecting ear, the lower end of the screws is inserted into the upper end of the clamping plate, and a second nut is screwed onto the screw.

[0015] As a further technical solution, the connecting ear is T-shaped, and the connecting ear is at a 90° angle to the clamp.

[0016] As a further technical solution, the lithium battery packs are spaced at the same distance from each other.

[0017] As a further technical solution, both the positive and negative electrodes of the lithium battery pack are fitted inside the connecting cover.

[0018] As a further technical solution, the external threaded layers located at both ends of the mating sleeve have opposite thread directions.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the docking assembly is positioned by the nesting of the docking sleeve and the protrusion, the connecting rod passes through the hole, and the docking sleeve and the protrusion are rigidly connected by the first nut and the external thread layer. Adjacent connecting covers are connected in series by the same connecting rod to achieve uniform arrangement of multiple lithium batteries, which solves the problem of easy loosening of traditional buckle or bolt connections, ensures a stable connection, and the tightening force of the external thread layer and the first nut can be adjusted to adapt to different installation requirements, enhance structural stability, and provide a reliable connection foundation for lithium battery packs.

[0021] 2. In this disclosure, the tensioning assembly uses a clamp to fit against both sides of the lithium battery pack and is fixed to the protrusion through positioning holes. The connecting ear is connected to the connecting cover through a hanging rod. The screw and the second nut tighten the connecting ear, clamp, and lithium battery pack, forming a two-way tightening force to enhance the gripping effect on the lithium battery. The T-shaped connecting ear and the clamp are designed at 90° to improve structural strength and prevent loosening caused by vibration. The screw insertion depth can be adjusted according to the thickness of the lithium battery pack to adapt to different specifications, avoid damage to the lithium battery due to improper gripping force, and improve connection reliability and applicability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric drawing of the present disclosure;

[0025] Figure 3 This is an isometric sectional view of the present disclosure;

[0026] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0027] In the diagram: 1. Lithium battery pack; 2. Connecting cover; 3. Protrusion; 4. Locking block; 5. Docking assembly; 5-1. Docking sleeve; 5-2. Through hole; 5-3. Connecting rod; 5-4. External thread layer; 5-5. First nut; 6. Tensioning assembly; 6-1. Clamping plate; 6-2. Positioning hole; 6-3. Groove; 6-4. Hanging rod; 6-5. Connecting lug; 6-6. Screw; 6-7. Second nut. Detailed Implementation

[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-4 As shown, it illustrates a lithium battery connection structure according to an embodiment of the present disclosure, including:

[0035] A plurality of lithium battery packs 1 and a plurality of connecting covers 2, wherein the connecting covers 2 are disposed on the top of the lithium battery packs 1;

[0036] The protrusion 3 and the docking component 5 are provided. The protrusion 3 is disposed on the top of the lithium battery pack 1, and the docking component 5 is disposed between the protrusion 3 and the connecting cover 2.

[0037] Several locking blocks 4 and a tensioning assembly 6 are provided. The locking blocks 4 are disposed on both sides of the lithium battery pack 1, and the tensioning assembly 6 is disposed between the connecting cover 2 and the lithium battery pack 1.

[0038] The docking assembly 5 includes a docking sleeve 5-1, which is disposed at the bottom of the connecting cover 2. The docking sleeve 5-1 is fitted onto the protrusion 3. The protrusion 3 and both sides of the docking sleeve 5-1 are provided with through holes 5-2. A connecting rod 5-3 is inserted into the through holes 5-2. The surface of the connecting rod 5-3 is provided with several sets of external thread layers 5-4. Each set of external thread layers 5-4 is a pair. A pair of external thread layers 5-4 are located on both sides of the docking sleeve 5-1. A first nut 5-5 is screwed onto the external thread layer 5-4. The first nut 5-5 is pressed against the side surface of the docking sleeve 5-1.

[0039] In some examples, a docking assembly 5 is designed to achieve uniform arrangement and stable installation of multiple lithium battery packs 1. This assembly is centered on the docking sleeve 5-1 at the bottom of the connecting cover 2. The docking sleeve 5-1 can be precisely fitted onto the protrusion 3 on the top of the lithium battery pack 1 to form a preliminary positioning structure. Connecting rods 5-3 are inserted into the through holes 5-2 on both sides of the protrusion 3 and the docking sleeve 5-1. Multiple sets of external thread layers 5-4 on the surface of the connecting rods 5-3 (each set is a pair, distributed on both sides of the docking sleeve 5-1) can be used to rigidly connect the docking sleeve 5-1 and the protrusion 3 by tightening the first nut 5-5.

[0040] When multiple lithium battery packs 1 are installed in parallel, the mating sleeves 5-1 of adjacent connecting covers 2 are connected in series through the same connecting rod 5-3. By adjusting the tightening force of the first nut 5-5, the lithium battery packs 1 can be kept equidistant.

[0041] This modular docking design supports the lateral expansion of the lithium battery pack 1. Through the nesting and positioning of the docking sleeve 5-1 and the protrusion 3, the through connection of the connecting rod 5-3, and the tightening adjustment of the first nut 5-5, the docking assembly 5 achieves the uniform distribution of multiple lithium batteries, ensuring the flatness and stability of the overall structure after installation, and providing a reliable foundation for subsequent circuit connections.

[0042] like Figures 1-4As shown in the figure, the tensioning assembly 6 in this embodiment includes several pairs of clamping plates 6-1. The clamping plates 6-1 are attached to both sides of the lithium battery pack 1. Several positioning holes 6-2 are opened on the surface of the clamping plates 6-1. The positioning holes 6-2 are fitted on the protrusions 3. Grooves 6-3 are opened at both ends of the top of the connecting cover 2. A hanging rod 6-4 is provided in the groove 6-3. A connecting ear 6-5 is fitted on the hanging rod 6-4. A pair of screws 6-6 are provided at the bottom of the connecting ear 6-5. The lower end of the screw 6-6 is inserted into the upper end of the clamping plate 6-1. A second nut 6-7 is screwed onto the screw 6-6.

[0043] In some examples, a tensioning assembly 6 is designed to enhance the tightness of the connection between the lithium battery pack 1 and the connecting cover 2. This assembly uses clamping plates 6-1 that fit against both sides of the lithium battery pack 1 as a support structure. The positioning holes 6-2 on the surface of the clamping plates 6-1 are fitted onto the protrusions 3 to ensure that the relative positions of the clamping plates 6-1 and the lithium battery pack 1 are fixed. The hanging rod 6-4 in the groove 6-3 at the top of the connecting cover 2 is fitted with the connecting ear 6-5. The lower end of the screw 6-6 at the bottom of the connecting ear 6-5 is inserted into the screw hole at the upper end of the clamping plate 6-1. By tightening the second nut 6-7, the connecting ear 6-5, the clamping plate 6-1 and the lithium battery pack 1 can be tightened and fixed. They can be inserted one by one until all the lithium battery packs 1 in a row are assembled.

[0044] When the second nut 6-7 is tightened, the screw 6-6 moves the connecting lug 6-5 downwards, tightening the connecting cover 2 and the lithium battery pack 1 via the hanging rod 6-4. Simultaneously, the clamping plate 6-1 clamps the side of the lithium battery pack 1, creating a two-way tightening force. This tightening structure allows adjustment of the screw 6-6 insertion depth according to the thickness of the lithium battery pack 1, adapting to different battery pack specifications. Furthermore, the anti-loosening design of the second nut 6-7 prevents loosening caused by vibration. Through the side clamping of the clamping plate 6-1, the vertical tightening of the screw 6-6 and the second nut 6-7, and the linkage of the hanging rod 6-4, the tightening assembly 6 further secures the lithium battery pack 1 and the connecting cover 2, improving the overall structure's vibration resistance and connection reliability.

[0045] For example, such as Figure 1 As shown, the connecting ear 6-5 has an overall T-shaped structure, and the connecting ear 6-5 is at a 90° angle to the clamping plate 6-1.

[0046] In some examples, a 90° relative angle is used to create better structural strength between the connecting lug 6-5 and the clamp 6-1, preventing loosening.

[0047] For example, such as Figure 2 As shown, the lithium battery packs 1 are spaced at the same distance from each other.

[0048] In some examples, maintaining the same spacing helps avoid significant temperature-related influences between the components.

[0049] For example, such as Figure 1 As shown, the positive and negative electrodes of the lithium battery pack 1 are both fitted inside the connecting cover 2.

[0050] In some examples, the positive and negative terminals are encased in the connector cover 2 for easier connection and protection.

[0051] For example, such as Figure 3 As shown, the external thread layers 5-4 located at both ends of the mating sleeve 5-1 have opposite thread directions.

[0052] In some examples, by using opposite thread directions, the first nuts 5-5 on both sides of the mating sleeve 5-1 can be turned simultaneously, while pressing the mating sleeve 5-1 to form a fixed shape.

[0053] In actual use: First, place the lithium battery packs 1 side by side on the workbench according to the preset layout, ensuring that the positive and negative terminals of each battery pack face the same direction and the spacing is uniform. Then, precisely fit the mating sleeve 5-1 at the bottom of the connecting cover 2 onto the protrusion 3 on the top of the lithium battery pack 1, so that the mating sleeve 5-1 and the positioning groove of the protrusion 3 are completely matched. Next, insert the connecting rod 5-3 into the through hole 5-2, ensuring that the connecting rod 5-3 passes through the through hole 5-2 of the adjacent mating sleeve 5-1 and the protrusion 3. Then, tighten the first nut 5-5 to evenly press the two sides of the mating sleeve 5-1 through the external thread layer 5-4, so that the adjacent connecting covers 2 are rigidly connected in series through the same connecting rod 5-3, ensuring that the lithium battery packs 1 are arranged neatly. Next, attach the clamping plates 6-1 to both sides of the lithium battery pack 1, accurately fitting the positioning holes 6-2 of the clamping plates 6-1 onto the protrusions 3. Then, fit the hanging rod 6-4 in the groove 6-3 at the top of the connecting cover 2 onto the connecting ear 6-5, so that the lower end of the screw 6-6 at the bottom of the connecting ear 6-5 is inserted into the screw hole at the upper end of the clamping plate 6-1. Slowly tighten the second nut 6-7 until the clamping plates 6-1 tightly clamp the sides of the lithium battery pack 1, ensuring that there is no shaking between the battery packs. Finally, check whether the positive and negative terminals of the lithium battery pack 1 are completely fitted into the insulating grooves in the connecting cover 2, and confirm that all lithium battery packs 1 maintain the same spacing to avoid poor heat dissipation or contact failure due to uneven spacing.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A lithium battery connection structure, characterized in that, include: A plurality of lithium battery packs (1) and a plurality of connecting covers (2), wherein the connecting covers (2) are disposed on the top of the lithium battery packs (1); The protrusion (3) and the docking assembly (5) are provided on the top of the lithium battery pack (1) and the docking assembly (5) is provided between the protrusion (3) and the connecting cover (2). A plurality of locking blocks (4) and a tensioning assembly (6) are provided, wherein the locking blocks (4) are disposed on both sides of the lithium battery pack (1) and the tensioning assembly (6) is disposed between the connecting cover (2) and the lithium battery pack (1); The docking assembly (5) includes a docking sleeve (5-1), which is disposed at the bottom of the connecting cover (2). The docking sleeve (5-1) is fitted onto the protrusion (3). The protrusion (3) and both sides of the docking sleeve (5-1) are provided with through holes (5-2), and a connecting rod (5-3) is inserted into the through holes (5-2).

2. The lithium battery connection structure according to claim 1, characterized in that, The connecting rod (5-3) has several sets of external thread layers (5-4) on its surface. Each set of external thread layers (5-4) is a pair. The pair of external thread layers (5-4) is located on both sides of the mating sleeve (5-1). A first nut (5-5) is screwed onto the external thread layer (5-4). The first nut (5-5) is pressed against the side surface of the mating sleeve (5-1).

3. The lithium battery connection structure according to claim 1, characterized in that, The tensioning assembly (6) includes several pairs of clamps (6-1), which are attached to both sides of the lithium battery pack (1). Several positioning holes (6-2) are provided on the surface of the clamps (6-1), and the positioning holes (6-2) are fitted onto the protrusions (3).

4. The lithium battery connection structure according to claim 3, characterized in that, The connecting cover (2) has grooves (6-3) at both ends of its top. A hanging rod (6-4) is provided in the groove (6-3). A connecting ear (6-5) is fitted on the hanging rod (6-4). A pair of screws (6-6) are provided at the bottom of the connecting ear (6-5). The lower end of the screw (6-6) is inserted into the upper end of the clamping plate (6-1). A second nut (6-7) is screwed onto the screw (6-6).

5. A lithium battery connection structure according to claim 4, characterized in that, The connecting ear (6-5) has an overall T-shaped structure, and the connecting ear (6-5) is at a 90° angle to the clamp (6-1).

6. A lithium battery connection structure according to claim 1, characterized in that, The lithium battery packs (1) are spaced at the same distance from each other.

7. A lithium battery connection structure according to claim 1, characterized in that, The positive and negative electrodes of the lithium battery pack (1) are both fitted inside the connecting cover (2).

8. A lithium battery connection structure according to claim 2, characterized in that, The external thread layers (5-4) located at both ends of the mating sleeve (5-1) have opposite thread directions.

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