Recyclable soft package battery cell connecting structure for electric motorcycle

Abstract

The utility model provides a recoverable soft package battery cell connecting structure for an electric motorcycle, and belongs to the technical field of battery cell connection. Comprising a first soft package battery cell and a second soft package battery cell, a positive tab is arranged on the front side of the first soft package battery cell, a negative tab is arranged on the front side of the second soft package battery cell, a plurality of first fixing holes are formed in the middle of the positive tab and the middle of the negative tab, and a plurality of second fixing holes are formed in the middle of the second soft package battery cell. A plurality of threaded holes are formed in the middle of the fixing iron bar at equal intervals, and a plurality of second fixing holes are formed in the middle of the fixing plate at equal intervals. According to the utility model, the heat dissipation area of the battery tab is enhanced through the fixing iron bar and the fixing plate, the stability of tab connection is enhanced at the same time, the situation of poor contact is ensured not to occur, and the fixing iron bar and the fixing plate are convenient to position in the installation process through the first positioning column, the second positioning column, the sliding groove, the positioning sliding block and the positioning groove; and the convenience in the mounting process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core connection, and in particular to a recyclable soft-pack battery core connection structure for electric motorcycles. Background Art

[0002] Soft-pack lithium batteries usually refer to lithium batteries whose outer shell is encapsulated by aluminum-plastic composite film. Due to their light weight, low mold opening cost, and high safety, their market share is gradually expanding. Currently, the lithium batteries on the market are all made into battery packs using tab welding, which has a simple welding process and high production efficiency. Common methods include laser welding, ultrasonic welding, and pulse welding. However, battery packs produced by welding processes have the problem that the battery pack as a whole cannot be disassembled and repaired, and the entire battery pack can only be replaced. At the same time, the light pollution, smoke pollution, and harmful gas pollution generated by welding will also cause harm to employees.

[0003] At present, the battery grouping process is carried out by using elastic metal to press the contact tabs, and the conduction is completed by the copper sheet or other conductive metal contacting the tabs under the pressure generated by elastic deformation; the assembly method of elastic metal pressing the tabs has the problems of uneven tab contact area and permanent deformation of the elastic metal after long-term use, which will lead to poor tab contact and local overheating of electric shock, posing certain safety hazards. At the same time, the tab press-type contact assembly process has high precision requirements, a complex overall structure, and occupies a large space, which has a great impact on the structural layout of the motorcycle. Therefore, the present application provides a recyclable soft-pack battery cell connection structure for electric motorcycles to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a recyclable soft-pack battery core connection structure for electric motorcycles to solve the problems of deformation of elastic metal pressing tabs, local overheating and complex structure occupying a large space.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A recyclable soft-pack battery cell connection structure for an electric motorcycle includes a first soft-pack battery cell and a second soft-pack battery cell, wherein the first soft-pack battery cell is provided with a positive electrode tab on the front side, and the second soft-pack battery cell is provided with a negative electrode tab on the front side, wherein the positive electrode tab is located in front of the negative electrode tab;

[0007] It also includes a fixing iron bar and a fixing plate, wherein the fixing iron bar is located at the rear side of the negative electrode ear, and the fixing plate is located at the front side of the positive electrode ear;

[0008] The middle of the positive electrode tab and the negative electrode tab are each provided with a plurality of first fixing holes, the middle of the fixing iron bar is provided with a plurality of threaded holes at equal intervals, and the middle of the fixing plate is provided with a plurality of second fixing holes at equal intervals;

[0009] The first fixing hole, the threaded hole and the second fixing hole are aligned with each other. The front side of each second fixing hole is provided with a mounting bolt, and the mounting bolt is threadedly connected to the inner side of the corresponding threaded hole.

[0010] Furthermore, first positioning posts are provided at the four corners of the fixed iron bar, and second positioning posts are provided at the outer ends of the first positioning posts on the upper and lower right sides. Positioning grooves are provided on the outer sides of the positive and negative ears, and the second positioning posts are engaged with the positioning grooves. The outer ends of the first positioning posts are both in contact with the inner sides of the positive and negative ears.

[0011] Furthermore, positioning sliders are provided at the upper and lower ends of the left middle part of the rear side of the fixed plate, and sliding grooves are provided at the upper and lower ends of the left front side of the fixed iron bar. The positioning sliders are slidably connected to the inner side of the corresponding sliding grooves, and the outer end of the sliding grooves is provided with a guide surface.

[0012] Furthermore, rubber gaskets are provided on the outer sides of the mounting bolts, and a mounting plate is provided on the upper rear side of the fixing plate, and the mounting plate is mounted on the upper left side of the positive electrode tab.

[0013] Furthermore, the fixed iron bar and the fixed plate are both rectangular structures, and arc grooves are provided on the upper and lower parts of the left side of the fixed plate.

[0014] Furthermore, the rear side of the fixing iron bar is in contact with the front sides of the first soft-pack battery cell and the second soft-pack battery cell.

[0015] Furthermore, the fixing plate is a copper plate.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. In the above scheme, the heat dissipation area of ​​the battery tab is enhanced by fixing the iron bar and the fixing plate, and the stability of the tab connection is enhanced to ensure that there will be no poor contact, avoid environmental pollution caused by tab welding, and have the ability to detach the battery cell. At the same time, this scheme does not require the purchase of expensive equipment such as laser welding machines and pulse welding machines, reducing equipment investment. The first positioning column, the second positioning column, the sliding groove, the positioning slider and the positioning groove make it easy to position the fixed iron bar and the fixing plate during the installation process, thereby increasing the convenience of the installation process.

[0018] 2. In the above solution, the hardness of the iron bar can ensure the stability of the tab connection and will not change over time. The bolt connection method makes the battery cell replaceable and the battery cell can be recycled for step-by-step utilization. The excellent electrical conductivity and thermal conductivity of the copper sheet greatly increases the heat dissipation volume of the tab on the basis of increasing the contact area of ​​the tab, thereby improving heat dissipation efficiency and reducing heat accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 A schematic diagram of the front three-dimensional structure of a recyclable soft-pack battery cell connection for an electric motorcycle;

[0021] Figure 2 This is a schematic diagram of the front-side three-dimensional structure of a recyclable soft-pack battery cell connection for an electric motorcycle;

[0022] Figure 3 A schematic diagram of the three-dimensional structure of a fixed iron bar connected to a recyclable soft-pack battery cell for an electric motorcycle;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of a fixing plate connected to a recyclable soft-pack battery cell for an electric motorcycle.

[0024] [reference numerals]

[0025] 1. First soft-pack battery cell; 101. Positive tab; 2. Second soft-pack battery cell; 201. Negative tab; 3. First fixing hole; 4. Fixing iron bar; 401. First positioning post; 402. Second positioning post; 403. Threaded hole; 404. Sliding groove; 405. Guide surface; 5. Fixing plate; 501. Second fixing hole; 502. Positioning slider; 503. Arc groove; 504. Mounting plate; 6. Positioning groove; 7. Mounting bolt; 8. Rubber gasket.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0027] The following describes in detail a recyclable soft-pack battery cell connection structure for electric motorcycles provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0028] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] like Figure 1-4 As shown, an embodiment of the present invention provides a recyclable soft-pack battery cell connection structure for an electric motorcycle, comprising a first soft-pack battery cell 1 and a second soft-pack battery cell 2. The front side of the first soft-pack battery cell 1 is provided with a positive electrode tab 101, and the front side of the second soft-pack battery cell 2 is provided with a negative electrode tab 201. The positive electrode tab 101 is located in front of the negative electrode tab 201.

[0031] It also includes a fixing iron bar 4 and a fixing plate 5, wherein the fixing iron bar 4 is located at the rear side of the negative electrode tab 201 and the fixing plate 5 is located at the front side of the positive electrode tab 101;

[0032] The middle of the positive electrode tab 101 and the negative electrode tab 201 are both provided with a plurality of first fixing holes 3, the middle of the fixing iron bar 4 is provided with a plurality of threaded holes 403 at equal intervals, and the middle of the fixing plate 5 is provided with a plurality of second fixing holes 501 at equal intervals;

[0033] The first fixing hole 3 , the threaded hole 403 and the second fixing hole 501 are aligned. The front side of the second fixing hole 501 is provided with a mounting bolt 7 , and the mounting bolt 7 is threadedly connected to the inner side of the corresponding threaded hole 403 .

[0034] like Figure 2 and Figure 4As shown, first positioning posts 401 are provided at the four corners of the fixed iron bar 4, and second positioning posts 402 are provided at the outer ends of the first positioning posts 401 on the upper and lower right sides. Positioning grooves 6 are provided on the outer sides of the positive ear 101 and the negative ear 201, and the second positioning posts 401 are engaged with the positioning grooves 6. The outer ends of the first positioning posts 401 are both in contact with the inner sides of the positive ear 101 and the negative ear 201. The first positioning posts 401 are engaged with the positioning grooves 6 to position and limit the left and right positions of the fixed iron bar 4. The second positioning posts 402 are in contact with the inside of the positive ear 101 and the negative ear 201 to position and limit the upper and lower positions of the fixed iron bar 4, so as to facilitate the alignment of the first fixing hole 3 with the threaded hole 403.

[0035] like Figure 3 and Figure 4 As shown, positioning sliders 502 are provided at the upper and lower ends of the left middle part of the rear side of the fixing plate 5, and sliding grooves 404 are provided at the upper and lower ends of the left front side of the fixing iron bar 4. The positioning sliders 502 are slidably connected to the inner sides of the corresponding sliding grooves 404, and the outer ends of the sliding grooves 404 are provided with guide surfaces 405, which are convenient for positioning and limiting the left and right and up and down positions of the fixing plate 5 during installation, so that the second fixing hole 501 is aligned with the first fixing hole 3, and the positioning slider 502 is added through the guide surface 405 and inserted into the inner side of the sliding groove 404, thereby increasing its installation convenience.

[0036] like Figure 2 and Figure 3 As shown, rubber gaskets 8 are provided on the outside of the mounting bolts 7, and a mounting plate 504 is provided on the upper rear side of the fixing plate 5. The mounting plate 504 is mounted on the upper left side of the positive electrode ear 101. The rubber gaskets 8 increase the fastening performance of the mounting bolts 7 after connection, and prevent the mounting bolts 7 from falling off due to vibration during use. The mounting plate 504 prevents the upper and lower positions of the fixing plate 5 from moving, thereby increasing stability after mounting.

[0037] like Figure 3 and Figure 4 As shown, the fixed iron bar 4 and the fixed plate 5 are both rectangular structures, and arc grooves 503 are provided on the upper and lower parts of the left side of the fixed plate 5. While facilitating manufacturing, the rectangular structure has high structural strength and prevents deformation. Through the arc groove 503, the insertion position of the positioning slider 502 can be clearly seen when it is inserted into the inner side of the sliding groove 404.

[0038] like Figure 2 As shown, the rear side of the fixed iron bar 4 is in contact with the front side of the first soft-pack battery cell 1 and the second soft-pack battery cell 2, so that the fixed iron bar 4 can support the rear of the positive electrode ear 101 and the negative electrode ear 201, prevent the positive electrode ear 101 and the negative electrode ear 201 from being squeezed and deformed, and ensure the stability of the connection.

[0039] like Figure 2As shown, the fixing plate 5 is a copper plate, which can increase the heat dissipation capacity of the fixing plate 5, improve the heat dissipation efficiency, and reduce heat accumulation.

[0040] The technical solution provided by the present invention is that during use, the positive tab 101 provided at the front end of the first soft-pack battery cell 1 is first aligned with the negative tab 201 provided at the front side of the second soft-pack battery cell 2, and the positive tab 101 is set in front of the negative tab 201. After the left and right positions of the first soft-pack battery cell 1 and the second soft-pack battery cell 2 are aligned, the first fixing holes 3 are aligned, and then the fixing iron bar 4 is placed on the rear side of the negative tab 201. The first positioning column 401 is arranged obliquely so that it can be engaged with the inner side of the positive tab 101 and the negative tab 201, so that the fixing iron bar 4 is limited in upper and lower positions, and at the same time, the second positioning column 402 is clamped on the inner side of the positioning groove 6 to limit the left and right positions of the fixed iron bar 4, and the threaded hole 403 is aligned with the first fixing hole 3. Secondly, the fixing plate 5 is set on the front side of the positive ear 101, and the positioning slider 502 set on the rear side is clamped on the inner side of the sliding groove 404. The fixing plate 5 is pushed to the right to align the second fixing hole 501, the threaded hole 403 and the first fixing hole 3, and the mounting plate 504 is slid on the upper part of the positive ear 101 for guidance. Finally, the rubber gasket 8 and the mounting bolt 7 are installed.

[0041] The present invention encompasses any substitutions, modifications, equivalent methods, and solutions that are not within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention above, but those skilled in the art can fully understand the present invention without these detailed descriptions.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A recyclable soft-pack battery cell connection structure for an electric motorcycle, comprising a first soft-pack battery cell (1) and a second soft-pack battery cell (2), characterized in that: The front side of the first soft-pack battery cell (1) is provided with a positive electrode tab (101), and the front side of the second soft-pack battery cell (2) is provided with a negative electrode tab (201), wherein the positive electrode tab (101) is located in front of the negative electrode tab (201); It also includes a fixing iron bar (4) and a fixing plate (5), wherein the fixing iron bar (4) is located on the rear side of the negative electrode tab (201), and the fixing plate (5) is located on the front side of the positive electrode tab (101); The positive electrode tab (101) and the negative electrode tab (201) are both provided with a plurality of first fixing holes (3) in the middle, the fixing iron bar (4) is provided with a plurality of threaded holes (403) at equal intervals in the middle, and the fixing plate (5) is provided with a plurality of second fixing holes (501) at equal intervals in the middle; The first fixing hole (3), the threaded hole (403) and the second fixing hole (501) are aligned, and the front side of the second fixing hole (501) is provided with a mounting bolt (7), and the mounting bolt (7) is threadedly connected to the inner side of the corresponding threaded hole (403).

2. The recyclable soft-pack battery cell connection structure for electric motorcycles according to claim 1, characterized in that: First positioning posts (401) are provided at the four corners of the fixed iron bar (4), and second positioning posts (402) are provided at the outer ends of the first positioning posts (401) at the upper and lower right sides. Positioning grooves (6) are provided on the outer sides of the positive electrode ear (101) and the negative electrode ear (201), and the second positioning posts (402) are engaged with the positioning grooves (6). The outer ends of the first positioning posts (401) are both in contact with the inner sides of the positive electrode ear (101) and the negative electrode ear (201).

3. The recyclable soft-pack battery cell connection structure for electric motorcycles according to claim 1, characterized in that: Positioning sliders (502) are provided at the upper and lower ends of the left middle portion of the rear side of the fixing plate (5), and sliding grooves (404) are provided at the upper and lower ends of the left front side of the fixing iron bar (4). The positioning sliders (502) are slidably connected to the inner sides of the corresponding sliding grooves (404), and the outer ends of the sliding grooves (404) are provided with guide surfaces (405).

4. The recyclable soft-pack battery cell connection structure for electric motorcycles according to claim 1, characterized in that: The outer sides of the mounting bolts (7) are provided with rubber gaskets (8), and the upper rear side of the fixing plate (5) is provided with a mounting plate (504), and the mounting plate (504) is mounted on the upper left side of the positive electrode tab (101).

5. The recyclable soft-pack battery cell connection structure for electric motorcycles according to claim 1, characterized in that: The fixed iron bar (4) and the fixed plate (5) are both rectangular structures, and arc grooves (503) are provided on the upper and lower parts of the left side of the fixed plate (5).

6. The recyclable soft-pack battery cell connection structure for electric motorcycles according to claim 1, characterized in that: The rear side of the fixing iron bar (4) is in contact with the front sides of the first soft-pack battery core (1) and the second soft-pack battery core (2).

7. The recyclable soft-pack battery cell connection structure for electric motorcycles according to claim 1, characterized in that: The fixing plate (5) is a copper plate.

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