Battery module of low-speed electric vehicle

Abstract

The utility model discloses a low-speed electric vehicle battery module which comprises a battery module body, and a connecting assembly is mounted at the top of the battery module body and is used for integrally connecting a plurality of battery packs on the battery module body; the connecting assembly comprises a battery pack pressing plate, two PC plastic uptake supports, an FDC flexible circuit board, two end plates and two tension steel belts, the battery pressing plate is installed in the middle of the battery module body, and the corresponding PC plastic uptake supports are installed on the two sides of the battery pressing plate. The integrated connecting assembly is arranged on the low-speed electric vehicle battery module, so that the FDC flexible circuit board on the connecting assembly replaces original wiring harness connection, and a battery connecting system is integrated, so that the space of the battery module is saved, the battery module is convenient to assemble and install, the steps of manual wiring harness assembling, welding and the like are reduced, and the cost is reduced. And thus, the assembly accuracy, convenience and production safety of the battery module are improved.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, specifically to a low-speed electric vehicle battery module. Background Technology

[0002] Lithium battery modules are battery packs used in low-speed electric vehicles. However, existing low-speed electric vehicle battery modules are not fixed in the battery box using drip irrigation technology. Instead, they need to be fixed by battery pressure plates. Using battery pressure plates makes the wiring harness arrangement of the battery pack connection system more difficult and requires manual wiring harness arrangement and installation.

[0003] Existing low-speed electric vehicle battery modules (a lithium battery module for low-speed electric vehicles with application number 202223413219.3) use multiple limiting seats on the inner wall of the outer casing to fix the internal structure of the lithium battery module while maintaining a certain distance to facilitate heat dissipation. However, the battery module does not adopt a simpler integrated layout structure to integrate the battery connection system, failing to simplify the installation process. This results in complex wiring harnesses and welding during manual assembly, leading to installation errors and affecting the safety of the low-speed electric vehicle battery module. Furthermore, the battery module lacks positioning components to adjust the tension of the fixed tension steel straps, impacting the assembly efficiency of the low-speed electric vehicle battery module. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a low-speed electric vehicle battery module to solve the technical problems of existing low-speed electric vehicle battery modules, which do not adopt a simpler integrated layout structure to integrate the battery connection system together, fail to simplify the installation process, make manual assembly of wiring harnesses and welding complicated, and thus cause installation errors, affecting the safety of the low-speed electric vehicle battery module. In addition, the battery module does not have a positioning component to adjust the tension of the fixed tension steel strip, which affects the assembly efficiency of the low-speed electric vehicle battery module.

[0005] According to the technical solution provided in the embodiments of this application, a low-speed electric vehicle battery module includes a battery module body with a connecting component installed on its top. The connecting component is used for integrated connection of several battery packs on the battery module body.

[0006] The connecting assembly includes a battery pack pressure plate, two PC vacuum forming brackets, an FDC flexible circuit board, two end plates, and two tension steel strips. The battery pressure plate is installed in the middle of the battery module body, and corresponding PC vacuum forming brackets are installed on both sides of the battery pressure plate. The two PC vacuum forming brackets are equipped with staggered aluminum bars, and each aluminum bar is equipped with a corresponding voltage acquisition nickel plate. Each voltage acquisition nickel plate is connected to the FDC flexible circuit board. The two end plates are respectively installed at both ends of the battery module body and are fixed by two annular tension steel strips, so that the connecting assembly integrates and connects the battery module body.

[0007] Several positioning mechanisms are installed on the end plate in pairs for positioning, fixing and adjusting the tension of the tensioned steel strip.

[0008] Furthermore, the FDC flexible circuit board is riveted to the top of the two PC blister brackets.

[0009] Furthermore, the end plate is provided with a plurality of mounting slots, and each mounting slot is equipped with a corresponding positioning mechanism.

[0010] Furthermore, the positioning mechanism includes a positioning block, a locking block, a rack, an adjusting rod, and a gear. The locking block is horizontally mounted on the side of the positioning block, and the rack is mounted on the locking block. The locking block is movably mounted in a groove on the mounting slot, and the rack meshes with the gear. The gear is mounted on the adjusting rod so that rotating the adjusting rod causes the gear to drive the rack to move, thereby causing the positioning block to move along the mounting slot.

[0011] Furthermore, the bottom of the adjusting rod is provided with a screw hole, which is connected to a fixing bolt screwed to the bottom of the end plate, so that the fixing bolt is used to fix the adjusting rod.

[0012] Furthermore, the positioning block is also provided with a positioning groove, which is used for positioning and engaging the tension steel strip.

[0013] Furthermore, a movable rod is installed on the side of the positioning block. The movable rod is movably installed in a movable groove on the end plate and abuts against an elastic element in the movable groove.

[0014] Furthermore, the elastic element is a metal spring.

[0015] Furthermore, the battery pack pressure plate has a U-shaped structure, and the connecting lugs at both ends of the battery pack pressure plate are connected to the end plate by screws.

[0016] In summary, the beneficial effects of this application are as follows:

[0017] 1. By setting an integrated connection component on the battery module of a low-speed electric vehicle, the FDC flexible circuit board on the connection component replaces the original wire harness connection, so that the battery connection system is integrated together, thereby saving space of the battery module, facilitating the assembly and installation of the battery module, reducing manual wire harness assembly and welding steps, and thus improving the assembly accuracy, convenience and production safety of the battery module.

[0018] Second, by setting several positioning mechanisms on the end plate, the positioning plates on the positioning mechanisms can position, fix and adjust the tension of the positioning clamped steel strip, so that the tension of the steel strip can be adjusted according to the model of the installed battery module, so that the steel strip can securely fix the battery module in assembly, thereby improving the assembly stability of the low-speed electric vehicle battery module. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is an exploded structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the positioning mechanism and the end plate of this utility model;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram of the side structure of the positioning block of this utility model.

[0025] Numbering in the diagram: Battery module body - 100, Connecting component - 200, Battery pack pressure plate - 210, PC vacuum forming bracket - 220, FDC flexible circuit board - 230, End plate - 240, Mounting groove - 241, Slide groove - 242, Tensioning steel strip - 250, Aluminum bar - 260, Voltage acquisition nickel sheet - 270, Positioning mechanism - 300, Positioning block - 310, Snap-fit ​​block - 320, Rack - 330, Adjusting rod - 340, Gear - 350, Fixing bolt - 360, Moving rod - 370, Elastic element - 380. Detailed Implementation

[0026] The present application 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 relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] A low-speed electric vehicle battery module, the structure of which is as follows: Figures 1-5 As shown, the battery module body 100 includes a connecting assembly 200 mounted on its top. The connecting assembly 200 is used for integrated connection of several battery packs on the battery module body 100, replacing the original separate connection, so as to facilitate the assembly of low-speed electric vehicle battery modules, reduce the error rate of manual assembly, and improve the safety of battery modules. The connecting assembly 200 includes a battery pack pressure plate 210, two PC vacuum forming brackets 220, an FDC flexible circuit board 230, two end plates 240, and two tension steel straps 250. The battery pack pressure plate 210 has a U-shaped structure, and the connecting ear plates at both ends of the battery pack pressure plate are connected to the end plates 240 by screws. The battery pressure plate is installed in the middle of the battery module body 100 and is connected to the end plates 240 installed on both sides of the battery module body 100 by bolts, so that the battery pressure plate, the two end plates 240, and the two tension steel straps 250 are connected together. The tensioning steel band 250 secures several battery packs, while corresponding PC vacuum forming brackets 220 are installed on both sides of the battery pressure plate. Interlaced aluminum bars 260 are installed on the two PC vacuum forming brackets 220, each aluminum bar 260 being riveted to the PC vacuum forming bracket 220. Corresponding voltage acquisition nickel plates 270 are installed on each aluminum bar 260, and each voltage acquisition nickel plate 270 is connected to the FDC flexible circuit board 230, allowing the integrated connection of the FDC flexible circuit board 230 to replace the original wiring harness connection. This enables the integrated connection of the connecting component 200 to the battery module body 100, improving the assembly efficiency and convenience of the low-speed electric vehicle battery module, while also enhancing the safety of the battery module. Several positioning mechanisms 300 are installed in pairs on the end plate 240, providing positioning, fixing, and tension adjustment for the tensioning steel band 250.

[0029] As a preferred embodiment, please refer to Figure 4 and Figure 5The end plate 240 is provided with several mounting slots 241, and each mounting slot 241 is equipped with a corresponding positioning mechanism 300. The positioning mechanism 300 includes a positioning block 310, a snap-fit ​​block 320, a rack 330, an adjusting rod 340, and a gear 350. The snap-fit ​​block 320 is horizontally mounted on the side of the positioning block 310, and the rack 330 is mounted on the snap-fit ​​block 320. The snap-fit ​​block 320 is movably mounted in the sliding groove 242 on the mounting slot 241, and the rack 330 is meshed with the gear 350. Mounted on the adjusting rod 340, rotating the adjusting rod 340 causes the gear 350 mounted on the adjusting rod 340 to rotate, thereby causing the rack 330 meshing with the gear 350 to move, which in turn drives the locking block 320 with the rack 330 to move along the slide groove 242, thereby causing the positioning block 310 with the locking block 320 to move along the mounting groove 241, thereby causing the tension steel band 250 that is positioned and locked by the positioning block 310 to expand outward in the horizontal direction, thereby adjusting the tightness of the tension steel band 250.

[0030] As a preferred embodiment, please refer to Figure 4 The bottom of the adjusting rod 340 is also provided with a screw hole, which is connected to the fixing bolt 360 screwed to the bottom of the end plate 240, so as to rotate the fixing bolt 360 and thus fix the adjusting rod 340 after rotation adjustment.

[0031] As a preferred embodiment, please refer to Figure 3 and Figure 5 The positioning block 310 is also provided with a positioning groove, which is L-shaped, so as to position and engage the tension steel strip 250, preventing the tension steel strip 250 from being unpositioned during installation, thus affecting the positioning and fixing of the battery pack on the low-speed electric vehicle battery module.

[0032] As a preferred embodiment, please refer to Figure 4 A movable rod 370 is installed on the side of the positioning block 310. The movable rod 370 is movably installed in the movable groove on the end plate 240 and abuts against the elastic element 380 in the movable groove. The elastic element 380 is a metal spring. When the positioning mechanism 300 adjusts the positioning block 310, the movable rod 370 moves along the movable groove, thereby restoring the compressed elastic element 380. The elastic potential energy generated by the elastic element 380 pushes the positioning block 310 to move outward, thereby improving the quality of the positioning block 310 in adjusting the tension of the tensioned steel belt 250.

[0033] The working principle of this low-speed electric vehicle battery module is as follows:

[0034] During the assembly and installation of low-speed electric vehicle battery modules, since the low-speed electric vehicle is not fixed in the PACK box using potting adhesive, the battery pack is fixed by the battery pack pressure plate 210. The wiring harness on the battery module is arranged and installed along the battery pack pressure plate 210. Because the wiring harness and the various connection systems of the battery module are not centralized and integrated, the assembly and welding of the low-speed electric vehicle module is relatively cumbersome, and human error can lead to safety issues with the battery pack. By integrating the battery connection system together, the battery module body 100 can be assembled... During installation, an integrated connecting assembly 200 is used. After several battery packs are fixed on the battery pack pressure plate 210, PC vacuum forming brackets 220 are installed on both sides of the battery pack pressure plate 210. Corresponding aluminum bars 260 are riveted to the PC vacuum forming brackets 220 to connect the battery packs. At the same time, FDC flexible circuit boards 230 are set on both sides of the battery pack pressure plate 210 to replace the original wire harness connection, allowing the FDC flexible circuit boards 230 to... The overvoltage acquisition nickel plate 270 is connected to each aluminum bar 260, thereby collecting and transmitting data from each battery pack on the battery module body 100. This allows the integrated connection component 200 to replace the original separate connection, improving the assembly efficiency and convenience of the low-speed electric vehicle battery module, while also enhancing its safety. Simultaneously, the two end plates 240 on the battery module body 100 are equipped with corresponding positioning mechanisms 300, allowing the positioning plates on the positioning mechanisms 300 to position and fix the positioning clamping steel strip 250. The tension is adjusted by rotating the adjusting rod 340 on the positioning mechanism 300, which in turn drives the gear 350 to rotate. This causes the rack 330, which is meshed with the gear 350, to move left and right in the horizontal direction. This, in turn, causes the positioning block 310, on which the rack 330 is mounted, to move left and right in the horizontal direction along the mounting groove 241. As the positioning block 310 moves horizontally, it adjusts the tension of the tension steel belt 250. When the tension is adjusted, the tension steel belt 250 can fix different models of battery modules and battery packs, thereby improving the assembly firmness of the battery modules and the safety of production.

[0035] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the utility model involved in this application is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A low-speed electric vehicle battery module, comprising a battery module body (100), on which a connecting component (200) is mounted, the connecting component (200) being used for integrated connection of a plurality of battery packs on the battery module body (100), characterized in that: The connecting assembly (200) includes a battery pack pressure plate (210), two PC vacuum forming brackets (220), an FDC flexible circuit board (230), two end plates (240), and two tension steel strips (250). The battery pressure plate is installed in the middle of the battery module body (100), and corresponding PC vacuum forming brackets (220) are installed on both sides of the battery pressure plate. The two PC vacuum forming brackets (220) are equipped with staggered aluminum bars (260), and each aluminum bar (260) is equipped with a corresponding voltage acquisition nickel sheet (270). Each voltage acquisition nickel sheet (270) is connected to the FDC flexible circuit board (230). The two end plates (240) are installed at both ends of the battery module body (100) and fixed by the two annular tension steel strips (250) so that the connecting assembly (200) can be integrated to connect the battery module body (100). Several positioning mechanisms (300) are installed on the end plate (240) in pairs for positioning, fixing and tension adjustment of the tensioned steel strip (250).

2. The low-speed electric vehicle battery module according to claim 1, characterized in that: The FDC flexible circuit board (230) is riveted to the top of the two PC blister brackets (220).

3. A low-speed electric vehicle battery module according to claim 1, characterized in that: The end plate (240) is provided with a plurality of mounting slots (241), and each mounting slot (241) is provided with a corresponding positioning mechanism (300).

4. A low-speed electric vehicle battery module according to claim 3, characterized in that: The positioning mechanism (300) includes a positioning block (310), a snap-fit ​​block (320), a rack (330), an adjusting rod (340), and a gear (350). The snap-fit ​​block (320) is horizontally mounted on the side of the positioning block (310), and the rack (330) is mounted on the snap-fit ​​block (320). The snap-fit ​​block (320) is movably mounted in the sliding groove (242) on the mounting groove (241). The rack (330) is meshed with the gear (350), and the gear (350) is mounted on the adjusting rod (340) so that rotating the adjusting rod (340) causes the gear (350) to drive the rack (330) to move, thereby causing the positioning block (310) to move along the mounting groove (241).

5. A low-speed electric vehicle battery module according to claim 4, characterized in that: The bottom of the adjusting rod (340) is also provided with a screw hole, which is connected to a fixing bolt (360) screwed to the bottom of the end plate (240) so that the fixing bolt (360) is used to fix the adjusting rod (340).

6. A low-speed electric vehicle battery module according to claim 4, characterized in that: The positioning block (310) is also provided with a positioning groove, which is used for positioning and engaging the tension steel strip (250).

7. A low-speed electric vehicle battery module according to claim 4, characterized in that: The positioning block (310) has a moving rod (370) mounted on its side. The moving rod (370) is movably mounted in the moving groove on the end plate (240) and abuts against the elastic element (380) in the moving groove.

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