Battery pack for logistics transport vehicle

Abstract

The utility model discloses a battery pack for a logistics transport vehicle, which relates to the technical field of battery packs and comprises a box body, a battery module is arranged in the box body and comprises a transverse module and a longitudinal module, single cells are transversely arranged in the transverse module, single cells are longitudinally arranged in the longitudinal module, and the transverse module and the longitudinal module are connected in series. And the arrangement direction of the single battery cells in the transverse module is vertically intersected with the arrangement direction of the single battery cells in the longitudinal module, so that the battery module which is integrally L-shaped is formed. According to the utility model, the transverse modules which are transversely arranged and the longitudinal modules which are longitudinally arranged are arranged, and the whole battery module is L-shaped, so that in actual use, the utilization rate of the internal space of a battery compartment can be maximized no matter what types of single battery cells are adopted to assemble a battery pack; and the number of the single battery cells in a limited space is increased, so that the battery pack can adapt to electric logistics transport vehicles with more electric quantity requirements and different voltage levels.

Description

Technical Field

[0001] This utility model belongs to the field of battery swapping technology, specifically to a battery swapping pack for logistics transportation vehicles. Background Technology

[0002] With the continuous development of e-commerce and the expansion of express delivery services in recent years, the demand for transportation tools to support this industry has become more extensive, leading to the booming development of the logistics and transportation electric vehicle industry and a gradual increase in demand.

[0003] However, with the increasing number of electric vehicles on the market, the issue of battery swapping has also arisen. Different manufacturers' electric vehicles have different battery compartment sizes and require different amounts of power. Therefore, these phenomena in electric vehicles as a final product have led to a wide variety of battery pack types.

[0004] Since the size and specifications of a battery pack are largely determined by the internal battery cells, using too many different types of cells means higher costs. Furthermore, the more types of battery packs there are, the more difficult it becomes to manage the product.

[0005] Therefore, it is necessary to provide a battery pack for logistics vehicles that is compatible with different specifications of battery cells to the greatest extent. Utility Model Content

[0006] To address the issues of varying battery compartment sizes and required power levels in electric vehicles from different manufacturers, resulting in a wide variety of battery packs for logistics vehicles, high costs, difficult product management, and poor compatibility, this invention provides a battery pack for logistics vehicles that is compatible with different specifications of battery cells to the greatest extent possible.

[0007] The technical solution adopted by this utility model is as follows: A battery pack for a logistics transportation vehicle includes a box body, in which a battery module is arranged. The battery module includes a horizontal module with individual cells arranged horizontally and a vertical module with individual cells arranged vertically. The horizontal module and the vertical module are connected in series. The arrangement direction of the individual cells in the horizontal module is perpendicular to the arrangement direction of the individual cells in the vertical module, forming an L-shaped battery module.

[0008] Furthermore, the horizontal module is formed by horizontally stacking multiple individual cells, with supporting side plates installed at both ends of the individual cell stacking direction in the horizontal module, and a top plate installed on the top of the horizontal module; the vertical module is formed by vertically stacking multiple individual cells, with a top plate also installed at the top of the vertical module, and a supporting side plate also installed on one side of the vertical module.

[0009] Furthermore, the battery module is also equipped with a BMS battery management system with a low-voltage acquisition harness and a temperature acquisition harness. One end of the low-voltage acquisition harness is connected to the positive and negative tabs of the individual battery cell, and the other end is connected to the BMS battery management system. One end of the temperature acquisition harness is connected to a temperature probe attached to the individual battery cell, and the other end is connected to the BMS battery management system.

[0010] Furthermore, a positive and negative electrode carrier is installed on one side of the battery module. A total positive copper busbar for the total positive output of the battery module and a total negative copper busbar for the total negative output of the battery module are installed on the positive and negative electrode carrier. Multiple series copper busbars for connecting the positive and negative tabs of all individual battery cells are also provided.

[0011] Furthermore, a series carrier is installed on the other side of the battery module, and multiple series copper busbars for connecting the positive and negative tabs of all individual battery cells are also provided on the series carrier.

[0012] Furthermore, cushioning foam is installed on the supporting side plate and top plate of the battery module.

[0013] Furthermore, baffle strips are installed on the supporting side plate and top plate of the battery module.

[0014] Furthermore, a top cover is installed on the top of the housing, a handle is installed on the outside of the top cover, and an antenna that is connected to the handle is installed on the inside of the top cover.

[0015] Furthermore, the upper cover is provided with a first socket mounting hole for installing a vehicle charging and discharging socket, and a second socket mounting hole for installing a battery swapping cabinet charging socket.

[0016] Furthermore, the top of the battery module is provided with an insulating film that isolates and insulates it from the top cover.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] This battery pack for logistics vehicles uses a design with transversely arranged modules and longitudinally arranged modules. The arrangement of individual cells in the transverse modules intersects perpendicularly with the arrangement of individual cells in the longitudinal modules, forming an L-shaped battery module. This maximizes the utilization of the battery compartment's internal space, regardless of the manufacturer or model of individual cells used in assembling the battery pack. It fully utilizes both the height and width of the battery compartment. Increasing the number of individual cells within a limited space allows the battery pack to accommodate more electric logistics vehicles with varying power demands and voltage levels, thus providing excellent compatibility. The L-shaped battery module also provides space for the subsequent BMS (Battery Management System), wiring harnesses, and sockets. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model;

[0021] Figure 2 for Figure 1 3D structural diagram of the internal battery module;

[0022] Figure 3 for Figure 2 Schematic diagram of the structure of the positive and negative electrode carriers;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure of the tandem carrier;

[0024] Figure 5 for Figure 2 Schematic diagram of the structure of the horizontal and vertical modules;

[0025] Figure 6 for Figure 2 Schematic diagram of the middle horizontal module;

[0026] Figure 7 for Figure 2 Schematic diagram of the structure of the longitudinal module;

[0027] Figure 8 This is a schematic diagram of the structure of the battery module entering the housing according to this utility model;

[0028] Figure 9 for Figure 8 A three-dimensional structural diagram of the upper cover, handle, and antenna.

[0029] Figure 10 for Figure 9 Schematic diagram of the upper and middle covers;

[0030] Figure 11 for Figure 1 A three-dimensional structural diagram of the middle box;

[0031] Figure 12 This is a schematic diagram of the assembly of the top cover and the box body of this utility model;

[0032] Figure 13This is a schematic diagram of the assembly of the present invention and the battery swapping cabinet.

[0033] Attached image description: 1. Box body;

[0034] 2. Top cover; 201. Handle mounting hole; 202. First socket mounting hole; 203. Second socket mounting hole; 204. Handle; 205. Vehicle charging / discharging socket; 206. Battery swapping cabinet charging socket; 207. Antenna mounted;

[0035] 3. Battery module; 301. Horizontal module; 302. Vertical module; 303. Individual battery cell; 304. Supporting side plate; 305. Top plate;

[0036] 4. Positive and negative electrode carriers; 401. Total positive copper busbar; 402. Total negative copper busbar;

[0037] 5. Series carrier; 6. Series copper busbar; 7. Low-voltage acquisition harness; 8. Temperature acquisition harness; 9. BMS battery management system; 10. Positive side high-voltage connection terminal; 11. Negative side high-voltage connection terminal; 12. Buffer foam; 13. Adhesive strip; 14. Insulating film; 15. Adhesive overflow hole. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] The following is combined Figures 1-13 This utility model will be described in detail.

[0042] Example

[0043] like Figure 5 As shown, a battery swapping pack for a logistics vehicle includes a housing 1. A battery module 3 is provided inside the housing 1. The battery module 3 includes a transverse module 301 with individual battery cells 303 arranged laterally and a longitudinal module 302 with individual battery cells 303 arranged longitudinally. The transverse module 301 and the longitudinal module 302 are connected in series. The arrangement direction of the individual battery cells 303 in the transverse module 301 is perpendicular to the arrangement direction of the individual battery cells 303 in the longitudinal module 302, forming an L-shaped battery module 3.

[0044] In the existing technology, individual battery cells 303 can only be arranged in a single direction, either longitudinally or laterally. Due to the different models of individual battery cells 303 produced by different manufacturers, the positive and negative tabs of some cells are located in the middle of the width direction, while those are located to the left or right. In some cases, the positive and negative tabs are on the same side. Therefore, the series and parallel arrangement of individual battery cells 303 in a single direction is prone to short circuit problems.

[0045] By utilizing the aforementioned arrangement of the horizontal module 301 and the vertical module 302, the internal space utilization of the battery compartment can be maximized in actual use, regardless of the manufacturer's individual battery cells 303 used to assemble the battery pack, or the type of individual battery cells 303 used. This means that the space in both the height and width directions of the battery compartment can be fully utilized. Simultaneously, the overall L-shaped battery module 3 also provides space for the subsequent BMS battery management system 9, as well as wiring harnesses and sockets.

[0046] like Figure 6 As shown, the horizontal module 301 is formed by horizontally stacking multiple individual battery cells 303. Supporting side plates 304 are installed at both ends of the stacking direction of the individual battery cells 303 in the horizontal module 301, and a top plate 305 is installed on the top of the horizontal module 301. After the multiple individual battery cells 303 are stacked and assembled into a module, they can be secured with cable ties. Overflow holes 15 are provided on both supporting side plates 304 and the top plate 305 to facilitate smooth glue filling after the battery module 3 is installed into the housing 1.

[0047] like Figure 7 As shown, the vertical module 302 is formed by stacking multiple individual battery cells 303 vertically. A top plate 305 is also installed on the upper end of the vertical module 302, and a supporting side plate 304 is also installed on one side of the vertical module 302. After the multiple individual battery cells 303 are stacked and assembled to form a module, they can be secured with cable ties. The top plate 305 has an overflow hole 15, which also facilitates smooth glue filling after installation into the housing 1.

[0048] like Figure 3 and Figure 4 As shown, the positive and negative electrode carriers 4 and the series carriers 5 are respectively assembled onto the stacked battery module 3 to form a whole. The positive and negative electrode carriers 4 are equipped with a total positive copper busbar 401 and a total negative copper busbar 402 for total positive and total negative output, and also have multiple series copper busbars 6 for connecting the positive and negative tabs of all individual battery cells 303 in series. The total positive copper busbar 401, the total negative copper busbar 402, and the series copper busbars 6 are fastened to the positive and negative electrode carriers 4 with brass rivets.

[0049] The positive and negative electrode carrier 4 has elongated holes for the tabs of the individual battery cells 303 to pass through. After the battery cell tabs pass through the elongated holes on the positive and negative electrode carrier 4, they are bent by a specific tool and placed on the series copper busbar 6 in a fixed position. Finally, they are fixed by laser welding.

[0050] In addition, overflow holes 15 are also provided on the positive and negative electrode carriers 4 to ensure that the final potting can encapsulate all individual battery cells 303. The positive and negative electrode carriers 4 and the supporting side plates 304 and top plates 305 of the battery module 3 have snap-fit ​​holes at the matching positions, which are matched and connected according to the male and female principle to achieve a tight fastening effect.

[0051] The series carrier 5 is also equipped with a series copper busbar 6 for connecting the positive and negative tabs of all individual battery cells 303 in series. It is fastened to the series carrier 5 with brass rivets. Similarly, the series carrier 5 has elongated holes for the tabs of the individual battery cells 303 to pass through. It is bent by a specific tool and overlapped on the series copper busbar 6 in a fixed position. Finally, it is fixed by laser welding to complete the series conduction of the entire battery module 3.

[0052] The series carrier 5 also has an overflow hole 15, as well as a snap-fit ​​hole that matches and connects with the support side plate 304 and top plate 305 on the battery module 3. After the positive and negative carriers 4 and the series side carrier 5 are snapped together and installed, the entire battery module 3 is assembled.

[0053] Immediately afterwards, such as Figure 2 As shown, the low-voltage acquisition harness 7 with a nickel strip at the tail end is laser-welded to the acquisition point of each individual battery cell 303, and the other end is connected to the BMS battery management system 9 via a terminal to achieve the purpose of acquiring cell signals. One end of the temperature acquisition harness 8 is connected to the temperature probe of the individual battery cell 303, and the other end is connected to the BMS battery management system 9 via a terminal.

[0054] The battery pack is an integrated system consisting of battery modules 3 controlled or managed by the BMS (Battery Management System) 9. The battery pack not only facilitates the installation, connection, and management of battery modules 3, but also provides necessary protection and monitoring functions to ensure the safe and efficient operation of the batteries.

[0055] like Figure 10 As shown, the top cover 2 on the housing 1 is milled with reinforcing ribs in the horizontal and vertical directions using an aluminum ingot machining method, thereby ensuring the rigidity and strength of the top cover and improving the structural strength of the entire battery pack.

[0056] like Figure 10 As shown, the upper cover 2 is machined with a first socket mounting hole 202 for installing the vehicle charging and discharging socket 205, a second socket mounting hole 203 for installing the battery swapping cabinet charging socket 206, and a handle mounting hole 201 for installing the handle 204. The upper cover 2 is also provided with threaded through holes around its perimeter for connecting and fixing with the housing 1.

[0057] like Figure 11 As shown, the housing 1 is formed from aluminum sheet through bending and welding processes. The bent sheet unfolds into an L-shape, meaning there are three weld seams on the bottom of housing 1 and one weld seam on the vertical surface. This minimizes the number of welding points, thereby reducing stress concentration and deformation caused by welding. Similarly, through holes are provided around the mating surfaces of housing 1 and the upper cover 2 for bolt connection with the threaded through holes of the upper cover 2.

[0058] like Figure 9 As shown, the vehicle charging / discharging socket 205 and the battery swapping cabinet charging socket 206 are pre-installed on the upper cover 2, with adapter connectors attached to the wiring harness ends of the sockets. Simultaneously, the handle 204 and the mounted antenna 207 are also installed on the upper cover 2. The mounted antenna 207 is a GPS antenna, which utilizes the propagation and reception of electromagnetic waves to achieve positioning and navigation functions. Installing the antenna 207 on the handle 204 further facilitates signal reception.

[0059] like Figure 2 As shown, the positive side high-voltage connection terminal 10 is connected to the main positive copper busbar 401 with a bolt and nut for positive output; the negative side high-voltage connection terminal 11 is connected to the main negative copper busbar 402 with a bolt and nut for negative output. The main positive copper busbar 401 and the main negative copper busbar 402 serve as both the main positive / main negative output and the main positive / main negative input of the battery module 3. When connected to the vehicle charging / discharging socket, 206 functions as an output; when connected to the battery swapping cabinet charging socket, 207 functions as an input.

[0060] In addition, cushioning foam 12 and adhesive strips 13 are attached to the periphery of the entire battery module 3. The proper use of cushioning foam 12 and adhesive strips 13 ensures that the battery module 3 is securely fastened without increasing the weight of the battery pack.

[0061] like Figure 8As shown, the assembled battery module 3 is pushed horizontally into the housing, and sealant is injected through the gap between the battery module 3 and the housing 1 to ensure that the battery module 3 is fixed inside the housing. Next, an insulating film 14 is attached to the top of the battery module 3 for insulation and isolation from the top cover 2.

[0062] Finally, as Figure 1 and Figure 12 As shown, the assembled top cover 2 and the box body 1 are assembled and connected with screws. Figure 13 As shown, the assembled battery pack is placed into the battery swapping cabinet.

[0063] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery swap battery pack for a logistics transport vehicle, comprising a box body (1), characterized in that: The battery module (3) is arranged in the box body (1), and the battery module (3) comprises a transverse module (301) in which single battery cells (303) are arranged transversely and a longitudinal module (302) in which single battery cells (303) are arranged longitudinally, the transverse module (301) and the longitudinal module (302) are connected in series, the arrangement direction of the single battery cells (303) in the transverse module (301) is perpendicular to the arrangement direction of the single battery cells (303) in the longitudinal module (302), and the battery module (3) as a whole has an L shape.

2. The battery swap pack for logistic transport vehicle according to claim 1, characterized in that: The transverse module (301) is formed by transversely stacking a plurality of single battery cells (303), support side plates (304) are arranged at both ends of the stacking direction of the single battery cells (303) in the transverse module (301), and a top plate (305) is arranged at the top of the transverse module (301); the longitudinal module (302) is formed by longitudinally stacking a plurality of single battery cells (303), a top plate (305) is arranged at the upper end of the longitudinal module (302), and a support side plate (304) is arranged at one side of the longitudinal module (302). 3.The battery pack for logistic transport vehicle according to claim 1, characterized in that: A BMS battery management system (9) with a low-voltage collection wire harness (7) and a temperature collection wire harness (8) is further arranged on the battery module (3), one end of the low-voltage collection wire harness (7) is connected with positive and negative tabs of the single battery cell (303), the other end of the low-voltage collection wire harness (7) is connected with the BMS battery management system (9), one end of the temperature collection wire harness (8) is connected with a temperature probe attached to the single battery cell (303), and the other end of the temperature collection wire harness (8) is connected with the BMS battery management system (9).

4. The battery swap pack for logistic transport vehicle according to claim 2, characterized in that: A positive and negative carrier (4) is arranged at one side of the battery module (3), the positive and negative carrier (4) is provided with a total positive copper bar (401) for total positive output of the battery module (3) and a total negative copper bar (402) for total negative output of the battery module (3), and a plurality of series copper bars (6) for connecting positive and negative tabs of all single battery cells (303) in series are further arranged.

5. The battery swap pack for logistic transport vehicle according to claim 2, characterized in that: A series carrier (5) is arranged at the other side of the battery module (3), and the series carrier (5) is also provided with a plurality of series copper bars (6) for connecting positive and negative tabs of all single battery cells (303) in series. 6.The battery pack for logistic transport vehicle according to claim 2, characterized in that: Buffered foam (12) is arranged on the support side plate (304) and the top plate (305) of the battery module (3). 7.The battery pack for logistic transport vehicle according to claim 2, characterized in that: A glue blocking strip (13) is arranged on the support side plate (304) and the top plate (305) of the battery module (3). 8.The battery pack for logistic transport vehicle according to claim 1, characterized in that: An upper cover (2) is arranged at the top of the box body (1), a handle (204) is arranged on the outer side of the upper cover (2), and a carrying antenna (207) is further arranged on the inner side of the upper cover (2) and connected with the handle (204). 9.The battery pack for logistic transport vehicle according to claim 8, characterized in that: A first socket mounting hole (202) for mounting a vehicle-mounted charging and discharging socket (205) is arranged on the upper cover (2), and a second socket mounting hole (203) for mounting a battery replacement cabinet charging socket (206) is further arranged. 10.The battery pack for logistic transport vehicle according to claim 9, characterized in that: An insulating film (14) is arranged on the top of the battery module (3) and is insulated from the upper cover (2).

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