Novel electric motorcycle battery module structure

Abstract

The utility model provides a novel electric motorcycle battery module structure which comprises a BMS (Battery Management System) module, a battery cell, a nickel sheet, an insulating sheet, four brackets and a screw rod, an upper-layer battery module is jointly formed by a first bracket, a second bracket, the battery cell between the first bracket and the second bracket, the nickel sheet which is arranged on the bracket and is electrically connected with the battery cell, the insulating sheet on the nickel sheet and the like; the third bracket, the fourth bracket, the battery cells between the third bracket and the fourth bracket, nickel sheets which are arranged on the brackets and are electrically connected with the battery cells, insulating sheets on the nickel sheets and the like jointly form a lower-layer battery module; the upper-layer battery module and the lower-layer battery module are stacked and are fastened through a plurality of screw rods; the BMS module is arranged at one end of the upper-layer battery module and one end of the lower-layer battery module, and the upper end and the lower end of the BMS module are fixed to the upper-layer battery module and the lower-layer battery module respectively. According to the battery module, a single-layer battery cell structure is improved into a double-layer battery cell structure, so that the volume of the battery module is smaller under the same energy, and the requirements of customers on light weight and high energy are met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a novel electric motorcycle battery module structure. Background Art

[0002] At present, the country is vigorously promoting the development of new energy, which has led to the rapid development of the battery industry. At present, the traditional motorcycle industry is still developing in full swing, especially in Europe and the United States, which has become the main focus of domestic motorcycle manufacturers with an annual growth rate of nearly 10%. In recent years, the model of converting oil to electricity has also spread to the motorcycle industry, giving birth to electric motorcycle products. This electric car starts faster and has more power than a gasoline car, and it has quickly been warmly welcomed by people.

[0003] In order to achieve longer battery life and greater power, electric motorcycles often have very high requirements on battery size and weight. "Using the smallest volume to release the largest energy" has become the main demand direction for electric motorcycle batteries. In view of customers' new needs, it is urgent to provide a battery module structure for different electric motorcycle models to meet customers' needs for light weight and high energy. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a novel electric motorcycle battery module structure.

[0005] The technical solution to be adopted by the utility model to solve its technical problems is: a new type of electric motorcycle battery module structure, including a BMS module, a battery cell, a nickel sheet, an insulating sheet, a first bracket, a second bracket, a third bracket, a fourth bracket and a screw, the first bracket and the second bracket are arranged in parallel up and down, and a plurality of battery cells are arranged between the first bracket and the second bracket, and nickel sheets electrically connected to the battery cells are arranged above the first bracket and below the second bracket, and the battery cells are connected in parallel, and the surface of the nickel sheet is also covered with a layer of insulating sheet, and the above structure together constitutes an upper battery module; the third bracket and the fourth bracket are arranged in parallel up and down, and a plurality of battery cells are also arranged between the third bracket and the fourth bracket, and nickel sheets electrically connected to the battery cells are arranged above the third bracket and below the fourth bracket, and the battery cells are connected in parallel, and the surface of the nickel sheet is also covered with a layer of insulating sheet, The above structures together constitute a lower battery module; the upper battery module is stacked on top of the lower battery module and is fastened by multiple screws that penetrate the first bracket, the second bracket, the third bracket, and the fourth bracket; the BMS module is arranged at one end of the upper battery module and the lower battery module, and the upper and lower ends of the BMS module are respectively fixed to the upper battery module and the lower battery module.

[0006] Furthermore, in order to realize the installation of the BMS module, a first fixing plate and a second fixing plate are further included, wherein the first fixing plate is formed by extending outward from an insulating plate above the first bracket and close to the BMS module and bending toward the BMS module, and the second fixing plate is formed by extending outward from an insulating plate below the fourth bracket and close to the BMS module and bending toward the BMS module, and the upper end of the BMS module is connected to the first fixing plate, and the lower end is connected to the second fixing plate. Preferably, the first fixing plate and the second fixing plate are both L-shaped structures.

[0007] Specifically, the BMS module includes a BMS circuit board and a BMS heat sink. The four corners of the BMS circuit board are fixed to the outer side of the BMS heat sink through support columns. The upper and lower ends of the BMS heat sink are respectively connected to the first fixing plate and the second fixing plate. The inner side of the BMS heat sink is provided with convex ribs for increasing the heat dissipation area. A concave and convex corrugated structure is formed on the inner side of the BMS heat sink.

[0008] In order to realize the installation and electrical connection of the battery cell on the bracket, specifically, the first bracket, the second bracket, the third bracket and the fourth bracket have the same structure, and a plurality of positioning grooves are provided on one side thereof for fixing the battery cell, and a positioning block is provided on the other side thereof for positioning the nickel sheet and the insulating sheet. During assembly, the first bracket and the second bracket are provided with one side of the positioning groove facing each other up and down, and the upper and lower ends of the battery cell are inserted into the positioning groove, and the third bracket and the fourth bracket are provided with one side of the positioning groove facing each other up and down, and the upper and lower ends of the battery cell are inserted into the positioning groove.

[0009] In order to facilitate the installation and positioning of the nickel sheet and the insulating sheet, the first bracket, the second bracket, the third bracket and the fourth bracket are provided with a profiling groove for installing the nickel sheet and the insulating sheet on one side of the positioning block, and the positioning block is arranged in the area of ​​the profiling groove.

[0010] Furthermore, in order to make the connection between the upper and lower layers of battery modules more secure, a plurality of copper bars are also included. The copper bars are arranged on the side opposite to the BMS module, and the copper bars are fixedly connected to the first bracket, the second bracket, the third bracket and the fourth bracket from top to bottom.

[0011] In order to facilitate the connection and positioning of the copper bar, the first bracket, the second bracket, the third bracket and the fourth bracket are all provided with a copper bar fixing groove. During installation, the copper bar is directly embedded in the copper bar fixing groove, and the copper bar fixing grooves of different brackets are arranged in an up-and-down manner.

[0012] Furthermore, in order to facilitate installation and carrying, the battery module is provided in the housing as a whole, and the top cover and the bottom cover are respectively fixed to the top and bottom of the housing by screws, so that the battery module is sealed inside the housing, and the top cover is also provided with a handle for easy taking. The housing can protect the battery module and improve safety.

[0013] The beneficial effects of the present invention are as follows: the present invention provides a novel electric motorcycle battery module structure, which (1) improves the single-layer battery cell structure into a double-layer battery cell structure, thereby making the volume of the battery module smaller under the same energy; and (2) the double-layer battery cell structure is connected by means of a copper bus and a heat sink of a BMS module, thereby simplifying the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the battery module structure of an electric motorcycle of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the battery module structure of the electric motorcycle of the utility model.

[0017] Figure 3 It is a structural diagram of one side of the bracket.

[0018] Figure 4 It is a schematic diagram of the structure on the other side of the bracket.

[0019] Figure 5 It is a schematic diagram of the structure of the copper busbar.

[0020] Figure 6 It is a structural diagram of a nickel sheet.

[0021] Figure 7 It is another structure of the nickel sheet and a schematic diagram of the matching structure of the nickel sheet and the insulating sheet.

[0022] In the figure: 1. battery cell, 2. BMS circuit board, 3. BMS heat sink, 4. nickel sheet, 4.1. electrode, 5. first bracket, 6. second bracket, 7. third bracket, 8. fourth bracket, 9. screw, 10. copper busbar, 11. insulating sheet, 12. first fixing sheet, 13. second fixing sheet, 14. handle, 15. top cover, 16. shell, 17. bottom cover, 18. positioning groove, 19. positioning block, 20. contour groove, 21. copper busbar fixing groove, 22. positioning hole. DETAILED DESCRIPTION

[0023] The present invention is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter for which protection is sought is limited only by the attached claims and their equivalents.

[0024] like Figure 1-Figure 7 As shown, a new type of electric motorcycle battery module structure of the utility model includes a BMS module, a battery cell 1, a nickel sheet 4, an insulating sheet 11, a first bracket 5, a second bracket 6, a third bracket 7, a fourth bracket 8 and a screw 9, wherein the first bracket 5 and the second bracket 6 are arranged in parallel up and down, and a plurality of battery cells 1 are arranged between the first bracket 5 and the second bracket 6, and a nickel sheet 4 electrically connected to the battery cell 1 is arranged above the first bracket 5 and below the second bracket 6, and the battery cells 1 are connected in parallel, and a layer of insulating sheet 11 is also covered on the surface of the nickel sheet 4, and the above structure together constitutes an upper battery module; the third bracket 7 and the fourth bracket 8 are arranged in parallel up and down, and a plurality of battery cells 1 are also arranged between the third bracket 7 and the fourth bracket 8, and a nickel sheet 4 electrically connected to the battery cell 1 is arranged above the third bracket 7 and below the fourth bracket 8, and the battery cells 1 are connected in parallel, and a layer of insulating sheet 11 is also covered on the surface of the nickel sheet 4, The above structures together constitute the lower battery module; the upper battery module is stacked on top of the lower battery module and is fastened by a plurality of screws 9 that penetrate the first bracket 5, the second bracket 6, the third bracket 7, and the fourth bracket 8; the BMS module is arranged at one end of the upper battery module and the lower battery module, and the upper and lower ends of the BMS module are fixed to the upper battery module and the lower battery module respectively. Figure 1 As shown, for easy installation and carrying, it also includes a shell 16, a top cover 15 and a bottom cover 17. The battery module is arranged in the shell 16 as a whole, and the top cover 15 and the bottom cover 17 are respectively fixed to the top and bottom of the shell 16 by screws, so that the battery module is sealed inside the shell 16. The top cover 15 is also provided with a handle 14 for easy taking. The shell 16 can protect the battery module and improve safety.

[0025] like Figure 2 As shown, in order to realize the installation of the BMS module, it also includes a first fixing plate 12 and a second fixing plate 13, wherein the first fixing plate 12 is formed by extending outward from the insulating plate 11 above the first bracket 5 and close to the BMS module and bending toward the BMS module, and the second fixing plate 13 is formed by extending outward from the insulating plate 11 below the fourth bracket 8 and close to the BMS module and bending toward the BMS module, and the upper end of the BMS module is connected to the first fixing plate 12, and the lower end is connected to the second fixing plate 13. Preferably, the first fixing plate 12 and the second fixing plate 13 are both L-shaped structures. The BMS module includes a BMS circuit board 2 and a BMS heat sink 3, and the four corners of the BMS circuit board 2 are fixed to the outer surface of the BMS heat sink 3 through support columns, and the upper and lower ends of the BMS heat sink 3 are respectively connected to the first fixing plate 12 and the second fixing plate 13, and the inner side surface of the BMS heat sink 3 is provided with convex ribs for increasing the heat dissipation area. A concave and convex corrugated structure is formed on the inner side surface of the BMS heat sink 3.

[0026] like Figure 3 and Figure 4 As shown, the structures of the first bracket 5, the second bracket 6, the third bracket 7 and the fourth bracket 8 are basically the same, and a plurality of positioning grooves 18 are provided on one side thereof for fixing the battery cell 1, and a positioning block 19 is provided on the other side thereof for positioning the nickel sheet 4 and the insulating sheet 11. During assembly, the first bracket 5 and the second bracket 6 are provided with one side of the positioning groove 18 facing each other up and down, and the upper and lower ends of the battery cell 1 are inserted into the positioning groove 18, and the third bracket 7 and the fourth bracket 8 are provided with one side of the positioning groove 18 facing each other up and down, and the upper and lower ends of the battery cell 1 are inserted into the positioning groove 18. In order to facilitate the installation and positioning of the nickel sheet 4 and the insulating sheet 11, the first bracket 5, the second bracket 6, the third bracket 7 and the fourth bracket 8 are provided with one side of the positioning block 19 and a contour groove 20 for installing the nickel sheet 4 and the insulating sheet 11 is also provided, and the positioning block 19 is arranged in the area of ​​the contour groove 20.

[0027] like Figure 5 As shown, in order to make the connection between the upper and lower layers of battery modules more secure, a plurality of copper bars 10 are also included. The copper bars 10 are arranged on the side opposite to the BMS module, and the copper bars 10 are fixedly connected to the first bracket 5, the second bracket 6, the third bracket 7 and the fourth bracket 8 from top to bottom.

[0028] like Figure 3 and Figure 4 As shown, in order to facilitate the connection and positioning of the copper bar 10, the first bracket 5, the second bracket 6, the third bracket 7 and the fourth bracket 8 are all provided with a copper bar fixing groove 21. During installation, the copper bar 10 is directly embedded in the copper bar fixing groove 21, and the copper bar fixing grooves 21 of different brackets are aligned up and down.

[0029] like Figure 6 and Figure 7 As shown, the shape of the nickel sheet 4 can be one or more and can be designed according to actual needs. Figure 6 It is a structure of nickel sheet 4. Figure 7 Another structure of the nickel sheet 4 is shown in FIG. 4 , where the electrode 4.1 extends from the edge of the nickel sheet 4. The structure of the nickel sheet 4 of the utility model includes but is not limited to the above two structures, which will not be described one by one here. Figure 7 As shown, the structure of the insulating sheet 11 needs to match the structure of the nickel sheet 4 so that the nickel sheet 4 can be covered by the insulating sheet 11 to achieve insulation. The nickel sheet 4 and the insulating sheet 11 are also provided with positioning holes 22 that match the positioning blocks 19 on the bracket.

[0030] In this embodiment, the number of battery cells 1 is 180 pcs, each layer of battery cells 1 has 90 pcs, and the battery cells 1 adopt a specification of 21700 battery cells 1; the four battery cell 1 brackets protect the battery cells 1, and the 15mm ends of the single battery cell 1 are embedded in the positioning groove 18 for fixing; the four corners of the BMS circuit board 2 are fixed by four-corner screws; the surface of the bracket is provided with a contoured groove 20 for the nickel sheet 4 and the insulating sheet 11 to position the nickel sheet 4 and the insulating sheet 11, and the side is provided with a copper busbar fixing groove 21 to position the copper busbar 10; the copper busbar 10 connects the upper and lower layers of modules in series, and plays a fixing role, and is used for overcurrent, stress resistance, and vibration resistance between the two modules; the upper and lower layers of modules are also fixed by screws 9; the nickel sheet 4 is used for overcurrent of the battery cell 1 to achieve parallel connection.

[0031] In addition, the structure of the bracket, BMS and nickel sheet 4 also has the following functions:

[0032] (1) Special bracket structure: fix the battery cell 1, fix the BMS module, and fix the bracket of the module through the screw 9; fix the battery cell of the module through the nickel sheet and play the role of overcurrent;

[0033] (2) Special BMS structure: The total positive and negative of the battery are fixed to the BMS module by screws through the busbar, the movement of the BMS circuit board is limited by positioning the four corners, and the BMS circuit board is fixed by screws;

[0034] (3) Special nickel sheet 4, busbar structure: total positive and total negative copper-nickel composite busbar, 0.2mm thick series-parallel nickel sheet 4, the module uses a screw structure to fix the busbar to provide the module's overcurrent capacity. The nickel sheet 4 and the battery cell 1 are welded by spot welding.

[0035] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A new type of electric motorcycle battery module structure, characterized by: It includes a BMS module, a battery cell, a nickel sheet, an insulating sheet, a first bracket, a second bracket, a third bracket, a fourth bracket and a screw rod, wherein the first bracket and the second bracket are arranged in parallel up and down, and a plurality of battery cells are arranged between the first bracket and the second bracket, and a nickel sheet electrically connected to the battery cell is arranged above the first bracket and below the second bracket, and a layer of insulating sheet is also covered on the surface of the nickel sheet, and the above structure together constitutes an upper battery module; the third bracket and the fourth bracket are arranged in parallel up and down, and a plurality of battery cells are also arranged between the third bracket and the fourth bracket, and a nickel sheet electrically connected to the battery cell is arranged above the third bracket and below the fourth bracket, and a layer of insulating sheet is also covered on the surface of the nickel sheet, and the above structure together constitutes a lower battery module; the upper battery module is stacked on top of the lower battery module and is fastened by a plurality of screw rods penetrating the first bracket, the second bracket, the third bracket and the fourth bracket; the BMS module is arranged at one end of the upper battery module and the lower battery module, and the upper and lower ends of the BMS module are respectively fixed to the upper battery module and the lower battery module.

2. The novel electric motorcycle battery module structure as claimed in claim 1, characterized in that: It also includes a first fixing plate and a second fixing plate, wherein the first fixing plate is formed by extending outward from an insulating plate above the first bracket and close to the BMS module and bending toward the BMS module, and the second fixing plate is formed by extending outward from an insulating plate below the fourth bracket and close to the BMS module and bending toward the BMS module, and the upper end of the BMS module is connected to the first fixing plate, and the lower end is connected to the second fixing plate.

3. The novel electric motorcycle battery module structure as claimed in claim 2 is characterized in that: The BMS module includes a BMS circuit board and a BMS heat sink. The four corners of the BMS circuit board are fixed to the outer side of the BMS heat sink through support columns. The upper and lower ends of the BMS heat sink are respectively connected to the first fixing plate and the second fixing plate. The inner side of the BMS heat sink is provided with convex ribs to increase the heat dissipation area.

4. The novel electric motorcycle battery module structure as claimed in claim 3 is characterized in that: The first bracket, the second bracket, the third bracket and the fourth bracket have the same structure, and one side thereof is provided with a plurality of positioning grooves for fixing the battery core, and the other side is provided with a positioning block for positioning the nickel sheet and the insulating sheet.

5. The novel electric motorcycle battery module structure as claimed in claim 4 is characterized in that: A side surface of the first bracket, the second bracket, the third bracket and the fourth bracket on which the positioning block is provided is also provided with a contoured groove for installing the nickel sheet and the insulating sheet, and the positioning block is arranged in the area of ​​the contoured groove.

6. The novel electric motorcycle battery module structure as claimed in claim 1 is characterized in that: It also includes a plurality of copper bars, which are arranged on a side opposite to the BMS module, and the copper bars are fixedly connected to the first bracket, the second bracket, the third bracket and the fourth bracket in sequence from top to bottom.

7. The novel electric motorcycle battery module structure as claimed in claim 6 is characterized in that: The first bracket, the second bracket, the third bracket and the fourth bracket are all provided with copper bar fixing grooves.

8. The novel electric motorcycle battery module structure according to any one of claims 1 to 7, characterized in that: It also includes a shell, a top cover and a bottom cover. The battery module is arranged as a whole in the shell, and the top cover and the bottom cover are respectively fixed to the top and bottom of the shell by screws to seal the battery module inside the shell. A handle is also provided on the top cover.

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