Battery pack box body

Abstract

The utility model discloses a battery pack box body, the box body is provided with a plurality of placing areas for accommodating battery modules, the box body further comprises a power supply distribution unit, the outer wall surface of the box body is provided with a supporting part for loading the power supply distribution unit and an electric connector connected with a battery pack, and the power supply distribution unit is respectively connected with the electric connector and the battery modules. Therefore, the power distribution of the battery module in the box body is realized. The power distribution unit is arranged on the outer side of the box body in a limiting mode through the supporting part, the power distribution unit and the battery module arranged in the box body are arranged in a partitioned mode, assembly of the power distribution unit and the battery module does not influence each other, and when the power distribution unit needs to be detected and maintained, the power distribution unit can be directly overhauled from the outer side wall of the box body. And the battery module does not need to be disassembled or moved, so that the maintenance is more convenient and faster. The internal space of the box body can be fully used for placing and fixing the battery module, and the internal structure of the box body tends to be concise.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of vehicle battery replacement, and particularly relates to a battery pack box body. BACKGROUND

[0002] The power battery of a heavy truck has the characteristics of large electric quantity, large volume and large energy density. According to the use of the heavy truck, if the direct charging mode is adopted, the long charging time will affect the working efficiency of the heavy truck. Therefore, the fast battery replacement mode is usually adopted to improve the advantages.

[0003] For the power battery used by the heavy truck, due to the large electric quantity, large volume and large energy density, the protection level of the power battery module (PACK) is difficult to meet the IP67 level. At present, the protection level of the battery standard box and the power distribution unit (PDU) inside the power battery module (PACK) that requires fast battery replacement is usually designed to be IP67, and the power bus inside the power battery module (PACK) needs to use a high-voltage cable. The high-voltage cable is connected to the positive or negative terminal of the battery standard box through an IP67 protection level high-voltage connector, so as to ensure the protection level of the connection components inside the power battery module.

[0004] Since the high-voltage cable supporting large current passing has a thick wire diameter and a large turning radius, it is necessary to keep the connection of the battery module simple and reliable, and avoid too complex or too long lines. Therefore, in the prior art, the power battery module, the electrical connector and the power distribution unit are usually arranged in the box body where the power battery module is placed, so as to improve the integration degree of the internal design. Since sufficient operation space needs to be provided for the production personnel and the repeatability of product repair and disassembly needs to be considered, the internal space of the box body is arranged complexly, and when the power distribution unit needs to be repaired, the power battery module needs to be shifted, which is inconvenient to operate and low in repair efficiency. UTILITY MODEL CONTENTS

[0005] The application provides a battery pack box body, which solves the problems of complex internal structure arrangement of the box body and inconvenient repair caused by the power distribution unit located inside the box body.

[0006] The technical scheme adopted by the application is as follows:

[0007] A battery pack box body, the box body is provided with a plurality of placement areas for accommodating battery modules, and the box body further comprises a power distribution unit. The outer wall surface of the box body is provided with a support portion for loading the power distribution unit and an electrical connector for connecting the battery pack. The power distribution unit is connected with the electrical connector and the battery module respectively, so as to realize power distribution for the battery module inside the box body.

[0008] The scheme places multiple battery modules in the placement area of the box body, centrally places and manages the multiple battery modules, and charges the centrally placed battery modules through the power distribution unit. The power distribution unit is compact in structure and high in integration. The power distribution unit is arranged on the outer wall of the box body through the support part, and the support part limits and fixes the power distribution unit. This can avoid assembly interference between the power distribution unit and the battery module, and can make the power distribution unit close to the battery module in the same internal part, thereby facilitating power distribution of the battery module. Since the number of battery modules is large, the power distribution unit is connected with the electrical connector and the battery module, respectively, the electrical connector is electrically connected with each battery module through the power distribution unit, the wiring on the inside and outside of the box body is avoided, the overall circuit is simple and beautiful, and the circuit connection is avoided.

[0009] Meanwhile, the power distribution unit is arranged on the outer side of the box body through the support part, and is placed in a partitioned manner with the battery module arranged in the internal part of the box body. The assembly of the two does not affect each other, and when the power distribution unit needs to be detected and maintained, the power distribution unit can be directly detected and maintained from the outer wall of the box body, without the need to disassemble or move the battery module. This makes the maintenance of the power distribution unit more convenient and fast, reduces the workload of the operator, and is also conducive to improving the maintenance rate and reducing the operation difficulty of the maintenance work.

[0010] In addition, the power distribution unit is arranged on the outer wall of the box body. This way makes the space in the box body more fully utilized for placing and fixing the battery module, is conducive to the installation of battery modules of different sizes, and can make the internal structure of the box body tend to be simple, further reducing the assembly difficulty of the battery module and the power distribution unit.

[0011] In a preferred implementation manner of the battery pack box body, the box body includes a power supply side provided with an electrical connector, and the support part is located on the power supply side. The battery module includes a charging side provided with an electrical connection end, and the charging side is located on the same side as the power supply side.

[0012] The support part is arranged at the power supply side, so that the power distribution unit and the electrical connector are assembled on the same side of the box body, the distance between the electrical connector and the power distribution unit is effectively shortened, the wiring distance between the electrical connector and the power distribution unit is shortened, line connection is facilitated, the line length is shortened, and the wiring path is simplified. At the same time, the charging side of the battery module and the power supply side of the box body are located on the same side, which facilitates the connection between the electrical connection end of the battery module and the power distribution unit, is also conducive to shortening the connection distance, avoids assembly interference in the middle of long wiring, is conducive to the connection stability between the power distribution unit and the battery module, realizes stable power supply for the battery module, and the electrical connection end of the battery module, the electrical connector and the power distribution unit are all located on the same side of the box body, so as to facilitate the power supply connection from the power distribution unit to the electrical connection end, optimize the overall layout, and realize convenient power supply distribution connection.

[0013] In a preferred implementation manner of the battery pack box body, the plurality of battery modules are connected in series and / or parallel to the power distribution unit, the electrical connector is provided with power transmission lines corresponding to the battery modules, and the power distribution unit is provided with power transmission sockets connected with the power transmission lines.

[0014] In the scheme, the plurality of battery modules are connected in series to the power distribution unit, or the battery modules are connected in parallel to the power distribution unit, or the battery modules are connected in series and / or parallel to the power distribution unit according to the placement mode and number of the battery modules, so as to form a connection with the power distribution unit and realize charging of the battery modules. The power transmission lines of the electrical connector are inserted into the power transmission sockets, the power distribution unit supplies power to each power transmission line, the power transmission line transmits current to the battery module connected thereto, if a single power transmission line connects a single battery module, the battery module is supplied with power one by one through the power transmission line, and if the battery modules are connected to the power transmission line in series or parallel, the battery modules are supplied with power according to the actual situation.

[0015] In a preferred implementation manner of the battery pack box body, the placement area includes a first placement area and a second placement area arranged in a vertical direction and used for placing upper battery modules and lower battery modules respectively, and the corresponding upper battery modules and lower battery modules are connected in series to form battery groups, and the battery groups are connected in parallel to the power distribution unit.

[0016] The first placement area and the second placement area are arranged, so that more placement spaces are provided for the battery modules, more battery modules can be placed in the upper and lower layers of the box body, and centralized management of the multiple battery modules is realized. The upper layer battery modules and the lower layer battery modules are connected in series to form battery groups, the battery modules in the same battery group are distributed in a series connection mode, the battery groups are distributed in a parallel connection mode, the wiring connection between the multiple battery modules and the power distribution unit is further simplified, the upper layer battery modules and the lower layer battery modules in the same battery group are connected in series, the battery groups are connected in parallel, the number of wirings at the power distribution unit is reduced, the wiring layout is further simplified, and wiring arrangement is facilitated.

[0017] In a preferred implementation manner of the battery pack box body, the power transmission socket comprises a positive electrode socket and a negative electrode socket, and the power transmission socket faces the electric connector.

[0018] The power transmission socket faces the electric connector, the connection between the power transmission socket and the power transmission line of the electric connector is facilitated, the power transmission line is arranged in a short distance and directly connected to the power transmission socket, the operation is convenient, and the safety is better.

[0019] In a preferred implementation manner of the battery pack box body, the electric connector comprises a positive electrode access end and a negative electrode access end arranged at intervals in a horizontal direction, the power distribution unit comprises a positive electrode distribution unit and a negative electrode distribution unit arranged on the two sides of the electric connector, the positive electrode distribution unit is provided with a positive electrode socket, the negative electrode distribution unit is provided with a negative electrode socket, the positive electrode distribution unit is arranged on the side close to the positive electrode access end, and the negative electrode distribution unit is arranged on the side close to the negative electrode access end.

[0020] The positive electrode access end and the negative electrode access end of the electric connector are arranged at intervals, and the power distribution unit is arranged in cooperation, so that the positive electrode distribution unit and the negative electrode distribution unit are arranged on the same side as the corresponding positive electrode access end and negative electrode access end, the simple alignment connection between the electric connector and the power distribution unit is further realized, the line is prevented from being inserted and mixed in disorder, and thus the quick alignment connection of the electric connector and the power distribution unit is facilitated, and the positive electrode and the negative electrode are facilitated to be repaired separately.

[0021] In a preferred implementation manner of the battery pack box body, multiple battery groups are uniformly distributed in the box body, the electric connector is arranged at the middle position of the power supply side, the power distribution units are arranged on the two sides of the electric connector, and the relays and the fuses corresponding to the number of the battery groups are arranged in each power distribution unit.

[0022] The scheme is that the electric connector is arranged at the middle position of the power supply side, i.e. at the middle position of the box body, so that the electric connector is connected with the multiple groups of batteries evenly distributed in the box body through the power supply distribution units on both sides, and because the electric connector is arranged at the middle position, the power supply distribution units on both sides correspond to the groups of batteries evenly distributed in the box body, so that the overall structure arrangement is more harmonious and beautiful. Because the volume of the box body is certain, the maximum number of battery modules and the number of battery groups that can be placed are obtained according to the volume of the box body, and the number of relays and fuses arranged in the power supply distribution unit corresponds to the number of battery groups, so that one-to-one power supply connection is realized when the connection is made, and at the same time, whether the connection is correct can be detected by the number of connections during the connection of the power transmission line, so as to avoid omission or wrong connection.

[0023] In a preferred implementation manner of the battery pack box body, the support part includes a support frame fixed to the outside of the box body, the support frame includes a bottom plate and side plates connected to both sides of the bottom plate, the power supply distribution unit is placed on the bottom plate, and a clearance is arranged between the side of the power supply distribution unit and the side plate.

[0024] The scheme is that the support frame is arranged to limit the power supply distribution unit on the outer wall of the box body, so as to improve the compactness of the overall structure. The bottom plate supports and receives the power supply distribution unit, and the side plate protects the power supply distribution unit from the side, so as to prevent the power supply distribution unit from falling off the bottom plate and facilitate the fixation stability of the support frame in the box body and the dispersion of connection stress and support stress. The clearance is arranged to allow the test pen or other components to be inserted between the power supply distribution unit and the side plate, so that the power supply distribution unit can be detected without disassembly, and the maintenance convenience is further improved.

[0025] In a preferred implementation manner of the battery pack box body, the support part includes multiple positioning members fixed to the bottom plate, and the positioning members abut against the side wall of the power supply distribution unit, so as to limit the power supply distribution unit on the bottom plate.

[0026] The scheme is that the positioning members are arranged to limit the power supply distribution unit on one hand, and on the other hand, to improve the structural strength of the overall support part and the support stability of the power supply distribution unit. The positioning members limit the power supply distribution unit on the bottom plate through the abutting form, which is simple in structure and low in assembly difficulty, and the power supply distribution unit can be conveniently taken out from the support frame when needed.

[0027] In a preferred implementation manner of the battery pack box body, the power supply distribution unit is arranged in a square shape, the positioning member includes a positioning seat abutting against four corners of the power supply distribution unit, a bottom positioning hole of the positioning seat, and the positioning seat is fixed to the bottom plate through a fastener passing through the positioning hole.

[0028] This solution utilizes a square power distribution unit to enhance stability during placement and positioning. Positioning seats are used to fix the four corners of the power distribution unit, thus circumferentially limiting its movement and preventing it from shifting on the base plate. Fixing the positioning seats to the base plate ensures positional stability relative to the base plate, thereby guaranteeing accurate positioning of the power distribution unit on the base plate.

[0029] In a preferred embodiment of the battery pack housing, the side panel is provided with a connection port through which the power transmission line connected to the power distribution unit passes.

[0030] This solution, by setting up a connection port and a clearance between the side panel and the power distribution unit, allows new power transmission lines to be directly connected to the power distribution unit's power supply socket from the connection port, further simplifying the connection path and avoiding bends in the transmission lines. Furthermore, the connection port facilitates direct connection testing of the power distribution unit's power supply socket during maintenance, eliminating the need to remove the power distribution unit or perform testing from one side due to obstruction from the side panel. This direct connection port method makes maintenance more convenient.

[0031] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0032] This solution centrally manages multiple battery modules by placing them in the designated storage area of ​​the enclosure. A power distribution unit then distributes power to each module for charging. The power distribution unit is mounted on the outer wall of the enclosure via a support structure, which secures and limits its position. This prevents assembly interference between the power distribution unit and the battery modules and allows the unit to be positioned close to battery modules located within the same compartment, facilitating power distribution. Due to the large number of battery modules, the power distribution unit connects to both the electrical connectors and the individual battery modules. This separate connection avoids messy wiring on the inside and outside of the enclosure, resulting in a cleaner and more aesthetically pleasing overall wiring configuration and reducing the complexity of the wiring connections.

[0033] Meanwhile, the power distribution unit is positioned on the outside of the enclosure by a support limit, and is placed separately from the battery module inside the enclosure. The assembly of the two does not affect each other. When the power distribution unit needs to be inspected and repaired, it can be inspected and repaired directly from the outer wall of the enclosure without disassembling or moving the battery module. This makes the inspection and repair of the power distribution unit more convenient and faster, reduces the workload of operators, and also helps to improve the inspection and repair speed and reduce the operational difficulty of the inspection and repair work.

[0034] In addition, the power distribution unit is arranged at the outer wall of the box body, which can make the space inside the box body be more fully utilized to place and fix the battery module, facilitate the adaptive adjustment of the battery module of different sizes, and make the internal structure of the box body tend to be simple, and further reduce the assembly difficulty of the battery module and the power distribution unit. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application. In the drawings:

[0036] Figure 1 It is a structural schematic view of the battery pack box body in an embodiment of the present application;

[0037] Figure 2 It is a distribution schematic view of the battery pack box body placement area in an embodiment of the present application;

[0038] Figure 3 It is an enlarged view of A part of Figure 2

[0039] Figure 4 It is a structural schematic view of the power distribution unit and the electrical connector in an embodiment of the present application;

[0040] Figure 5 It is an enlarged view of B part of Figure 4

[0041] Figure 6 It is an enlarged view of C part of Figure 4

[0042] Explanation of reference signs:

[0043] 100 - box body, 110 - placement area, 120 - power supply side, 200 - battery module, 210 - charging side, 220 - upper layer battery module, 230 - lower layer battery module, 300 - support part, 310 - support frame, 311 - bottom plate, 312 - side plate, 313 - positioning seat, 314 - wiring port, 400 - power distribution unit, 410 - positive pole distribution unit, 411 - positive pole socket, 420 - negative pole distribution unit, 421 - negative pole socket, 500 - electrical connector, 510 - positive pole access end, 520 - negative pole access end. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the overall concept of the application, the following will be described in detail in an exemplary manner combined with the drawings of the specification.

[0045] ​​​In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced without the specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present application. It can be understood that the embodiments of the present application and the characteristics of the embodiments can be combined with each other under the condition of no conflict.

[0046] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0047] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection, or can be communication; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The present application provides a battery pack box 100, as shown in Figures 1 to 6 The box 100 is provided with a plurality of placing areas 110 for accommodating battery modules 200, and the box 100 further includes a power distribution unit 400. The outer wall surface of the box 100 is provided with a support part 300 for loading the power distribution unit 400 and an electrical connector 500 for connecting the battery pack. The power distribution unit 400 is connected with the electrical connector 500 and the battery module 200 respectively, so as to realize power distribution of the battery module 200 inside the box 100.

[0050] The scheme places multiple battery modules 200 in the placement area 110 of the box 100 to centrally manage the multiple battery modules 200, and charges the centrally placed battery modules 200 through the power distribution unit 400. The power distribution unit 400 is arranged on the outer wall of the box 100 through the support part 300, and the support part 300 limits and fixes the power distribution unit 400, which can avoid assembly interference between the power distribution unit 400 and the battery module 200, and can make the power distribution unit 400 close to the battery module 200 in the same interior, thereby facilitating power distribution of the battery module 200. Since the number of battery modules 200 is large, the power distribution unit 400 is arranged to be connected with the electrical connector 500 and the battery module 200, respectively, to realize electrical connection between the electrical connector 500 and each battery module 200, avoid wiring confusion on the inside and outside of the box 100, and be conducive to the simplicity and beauty of the overall circuit, and avoid complex circuit connection.

[0051] At the same time, the power distribution unit 400 is arranged on the outside of the box 100 through the support part 300, and is placed in a partitioned manner with the battery module 200 arranged in the interior of the box 100, and the assembly of the two does not interfere with each other. When the power distribution unit 400 needs to be detected and maintained, the power distribution unit 400 can be directly repaired from the outer wall of the box 100, without the need to disassemble or move the battery module 200, so that the repair of the power distribution unit 400 is more convenient and fast, reduces the workload of the operator, and is conducive to improving the repair rate and reducing the operation difficulty of the repair work.

[0052] In addition, the power distribution unit 400 is arranged on the outer wall of the box 100, which makes the space in the interior of the box 100 more fully utilized for placing and fixing the battery module 200, is conducive to the installation of battery modules 200 of different sizes, and can make the interior structure of the box 100 tend to be simple, and further reduce the assembly difficulty of the battery module 200 and the power distribution unit 400.

[0053] In one embodiment, as shown in Figure 1 the box 100 includes a power supply side 120 provided with an electrical connector 500, the support part 300 is located on the power supply side 120, and the battery module 200 includes a charging side 210 provided with an electrical connection end, and the charging side 210 is located on the same side as the power supply side 120.

[0054] The support part 300 is arranged on the power supply side 120, so that the power distribution unit 400 and the electric connector 500 are assembled on the same side of the box body 100, the distance between the electric connector 500 and the power distribution unit 400 is effectively shortened, the wiring distance between the electric connector 500 and the power distribution unit 400 is shortened, the line connection is facilitated, the line length is shortened, and the wiring path is simplified. At the same time, the charging side 210 of the battery module 200 and the power supply side 120 of the box body 100 are located on the same side, the connection between the electric connection end of the battery module 200 and the power distribution unit 400 is facilitated, the connection distance is shortened, the assembly interference in the long wiring is avoided, the connection stability between the power distribution unit 400 and the battery module 200 is facilitated, the stable power supply of the battery module 200 is realized, the electric connection end of the battery module 200, the electric connector 500 and the power distribution unit 400 are located on the same side of the box body 100, the power supply connection from the power distribution unit 400 to the electric connection end is facilitated, the overall layout is optimized, and the convenient power supply distribution connection is realized.

[0055] In an embodiment, the plurality of battery modules 200 are connected in series and / or parallel to the power distribution unit 400, the electric connector 500 is provided with power transmission lines corresponding to the battery modules 200, and the power distribution unit 400 is provided with power transmission sockets connected to the power transmission lines.

[0056] The plurality of battery modules 200 are connected in series to the power distribution unit 400, or the battery modules 200 are connected in parallel to the power distribution unit, or the battery modules 200 are connected in series and / or parallel according to the placement mode and number of the battery modules 200, so that the battery modules 200 are connected to the power distribution unit 400, and the charging of the battery modules 200 is realized. The power transmission lines of the electric connector 500 are inserted into the power transmission sockets, the power distribution unit 400 supplies power to each power transmission line, the power transmission line transmits current to the battery module 200 connected thereto, if a single power transmission line connects a single battery module 200, the battery module 200 is supplied with power one by one through the power transmission line, if the battery modules 200 are connected to the power transmission line in series or parallel, the battery modules 200 are supplied with power according to the actual situation.

[0057] Preferably, the placement area 110 includes a first placement area 110 and a second placement area 110 arranged in the vertical direction, respectively used for placing upper battery modules 220 and lower battery modules 230, and the corresponding upper battery modules 220 and lower battery modules 230 are connected in series to form a battery pack, and each battery pack is connected in parallel to the power distribution unit 400.

[0058] The first placement area 110 and the second placement area 110 are arranged, more placement spaces are provided for the battery module 200, more battery modules 200 can be placed in the upper and lower layers of the box 100, and the centralized management of the plurality of battery modules 200 is realized. The upper battery module 220 and the lower battery module 230 are connected in series to form a battery pack, the battery modules 200 in the same battery pack are distributed by the series connection mode, the power supply distribution units 400 between the battery packs are distributed by the parallel connection mode, the line connection between the plurality of battery modules 200 and the power supply distribution units 400 is further simplified, the upper battery module 220 and the lower battery module 230 in the same battery pack are connected in series, the battery packs are connected in parallel, the number of lines at the power supply distribution units 400 is reduced, the line layout is further simplified, and the line arrangement is facilitated.

[0059] Further, as shown in Figure 3 、 Figure 5 , the power transmission socket includes the positive electrode socket 411 and the negative electrode socket 421, and the power transmission socket faces the electric connector 500.

[0060] The power transmission socket faces the electric connector 500, the connection between the power transmission socket and the power transmission line of the electric connector 500 is facilitated, the power transmission line is arranged in a short distance and connected to the power transmission socket directly, the operation is convenient, and the safety is better.

[0061] Further, as shown in Figure 6 , the electric connector 500 includes the positive electrode access end 510 and the negative electrode access end 520 arranged in the horizontal direction, the power supply distribution unit 400 includes the positive electrode distribution unit 410 and the negative electrode distribution unit 420 arranged on the two sides of the electric connector 500, the positive electrode distribution unit 410 is provided with the positive electrode socket 411, the negative electrode distribution unit 420 is provided with the negative electrode socket 421, the positive electrode distribution unit 410 is located on the side close to the positive electrode access end 510, and the negative electrode distribution unit 420 is located on the side close to the negative electrode access end 520.

[0062] The positive electrode access end 510 and the negative electrode access end 520 of the electric connector 500 are arranged in the horizontal direction, and the power supply distribution unit 400 is arranged, the positive electrode distribution unit 410 and the negative electrode distribution unit 420 are arranged on the same side as the corresponding positive electrode access end 510 and negative electrode access end 520, the simple alignment connection between the electric connector 500 and the power supply distribution unit 400 is further realized, the line is prevented from being inserted and mixed, the quick alignment connection of the electric connector 500 and the power supply distribution unit 400 is facilitated, and the positive electrode and the negative electrode are facilitated to be repaired separately.

[0063] In a preferred embodiment, as shown in Figure 1 、 Figure 2 and Figure 4As shown, the housing 100 contains multiple battery packs evenly distributed inside. The electrical connector 500 is located in the middle of the power supply side 120. Power distribution units 400 are provided on both sides of the electrical connector 500, and each power distribution unit 400 contains a relay and a fuse corresponding to the number of battery packs.

[0064] This solution positions the electrical connector 500 in the middle of the power supply side 120, i.e., in the middle of the housing 100. This facilitates the connection of the electrical connector 500 to the multiple battery packs evenly distributed within the housing 100 via the power distribution units 400 on both sides. Furthermore, the central location of the connector 500 ensures a harmonious and aesthetically pleasing overall structure, as the power distribution units 400 on both sides correspond to the evenly distributed battery packs within the housing 100. Since the volume of the housing 100 is fixed, the maximum number of battery modules 200 that can be placed and the number of battery packs formed are determined by the capacity of the housing 100. By assigning relays and fuses within the power distribution units 400 to the number of battery packs, a one-to-one power supply connection is achieved during connection. Simultaneously, the number of connections during the power transmission line connection process allows for verification of correctness, preventing omissions or incorrect connections.

[0065] In one embodiment, such as Figure 3 , Figure 4 As shown, the support 300 includes a support frame 310 fixed to the outside of the housing 100. The support frame 310 includes a base plate 311 and side plates 312 connected to both sides of the base plate 311. The power distribution unit 400 is placed on the base plate 311, and a clearance gap is provided between the side of the power distribution unit 400 and the side plate 312.

[0066] This design utilizes a support frame 310 to confine the power distribution unit 400 to the outer wall of the enclosure 100, improving the overall structural compactness. The power distribution unit 400 is supported by a base plate 311 and protected from the sides by side plates 312, preventing it from falling off the base plate 311 and enhancing the stability of the support frame 310 within the enclosure 100, thus distributing connection and support forces. A clearance gap allows a testing pen or other components to be inserted between the power distribution unit 400 and the side plate 312, enabling testing without disassembling the power distribution unit 400 and further improving maintenance convenience.

[0067] Furthermore, such as Figure 3 As shown, the support 300 includes a plurality of positioning members fixed to the base plate 311, and the positioning members abut against the side wall of the power distribution unit 400 so that the power distribution unit 400 is limited to the base plate 311.

[0068] The positioning piece can position the power distribution unit 400 on one side, and on the other side, it is beneficial to improve the overall structural strength of the support part 300 and strengthen the support stability of the power distribution unit 400. The positioning piece positions the power distribution unit 400 on the bottom plate 311 through abutment. This structure is simple and has low assembly difficulty. When the power distribution unit 400 needs to be removed from the support frame 310, it is convenient to remove it.

[0069] Preferably, the power distribution unit 400 is square, the positioning piece includes a positioning seat 313 abutting the four corners of the power distribution unit 400, and the bottom of the positioning seat 313 is provided with a positioning hole. The positioning seat 313 is fixed to the bottom plate 311 through the positioning hole by a fastener. The square power distribution unit 400 is provided, so that the power distribution unit 400 has better stability when placed and positioned. The four corners of the power distribution unit 400 are fixed by the positioning seat 313, so that the square power distribution unit 400 is circumferentially positioned to prevent the power distribution unit 400 from moving on the bottom plate 311. The positioning seat 313 is fixed to the bottom plate 311 to achieve the positional stability of the positioning seat 313 relative to the bottom plate 311, and further achieve the positioning accuracy of the power distribution unit 400 on the bottom plate 311. The fastener can be a bolt or other fastening structure in the prior art. The positioning seat 313 can be fixedly connected to the power distribution unit 400 by welding, riveting, screws or other fixing methods in the prior art.

[0070] Preferably, as shown in Figure 3 The side plate 312 is provided with a wiring port 314 through which the power transmission line connected to the power distribution unit 400 passes.

[0071] The wiring port 314 is provided between the side plate 312 and the power distribution unit 400 to form a clearance. The power transmission line can be directly connected to the power transmission socket of the power distribution unit 400 through the wiring port 314, which further simplifies the connection path of the power transmission line and avoids bending the power transmission line. When the staff needs to overhaul, the power transmission socket of the power distribution unit 400 can be directly plugged and detected through the wiring port 314, without the need to remove the power distribution unit 400 or detect from the side of the side plate 312 due to the obstruction of the side plate 312. The direct detection through the wiring port 314 makes the overhaul more convenient.

[0072] In a specific embodiment, as shown in Figures 1 to 6As shown, the box 100 is provided with vertically arranged upper battery module 220 and lower battery module 230, and the upper battery module 220 and the lower battery module 230 are one-to-one corresponding, and the corresponding upper battery module 220 and the lower battery module 230 form three groups of battery groups, and the battery groups are uniformly distributed in the box 100, and along the distribution direction of the battery group, the electrical connector 500 is located in the middle, and one power distribution unit 400 is arranged on each side of the electrical connector 500.

[0073] The upper battery module 220 and the lower battery module 230 in the single battery group in the box 100 are connected in series, and then each battery group is connected in parallel to the electrical connector 500, and the electrical connector 500 is provided with a positive access end 510 and a negative access end 520 along the distribution direction of the battery group, and the power distribution unit 400 on both sides is a positive distribution unit 410 connected with the positive access end 510 and a negative access unit connected with the negative access end 520, and the positive plug 411 of the positive distribution unit 410 and the negative plug 421 of the negative distribution unit 420 are arranged on a side perpendicular to the outer side wall of the box 100, so that the shielding of the positive plug 411 and the negative plug 421 can be avoided, and the connection of the electrical connector 500 and the power distribution unit 400 is facilitated.

[0074] The places not described in the application can be realized by using or referring to the existing technology.

[0075] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0076] The above only describes the embodiments of the application and does not limit the application. Those skilled in the art can make various modifications and changes to the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the scope of claims of the application.

Claims

1. A battery pack case characterized by, The box is provided with a plurality of placement areas for accommodating battery modules, and further comprises a power distribution unit, and an outer wall surface of the box is provided with a support portion for loading the power distribution unit and an electrical connector connected to the battery pack, the power distribution unit is connected to the electrical connector and the battery modules respectively to realize power distribution of the battery modules in the box.

2. The battery pack enclosure of claim 1, wherein, The box comprises a power supply side provided with the electrical connector, and the support portion is located on the power supply side, and the battery modules comprise a charging side provided with an electrical connection end, and the charging side is located on the same side as the power supply side.

3. The battery pack enclosure of claim 2, wherein, A plurality of the battery modules are connected in series and / or parallel to the power distribution unit, the electrical connector is provided with a power transmission line corresponding to each of the battery modules, and the power distribution unit is provided with a power transmission socket connected to each of the power transmission lines.

4. The battery pack enclosure of claim 3, wherein, The placement areas comprise first and second placement areas arranged in a vertical direction for placing upper and lower battery modules respectively, and the corresponding upper and lower battery modules are connected in series to form a battery pack, and each battery pack is connected in parallel to the power distribution unit.

5. The battery pack enclosure of claim 3, wherein, The power transmission socket comprises a positive electrode socket and a negative electrode socket, and the power transmission socket faces the electrical connector.

6. The battery pack enclosure of claim 5, wherein, The electrical connector comprises a positive electrode access end and a negative electrode access end arranged at intervals in a horizontal direction, the power distribution unit comprises a positive electrode distribution unit and a negative electrode distribution unit arranged on both sides of the electrical connector, the positive electrode distribution unit is provided with the positive electrode socket, the negative electrode distribution unit is provided with the negative electrode socket, the positive electrode distribution unit is located on one side close to the positive electrode access end, and the negative electrode distribution unit is located on one side close to the negative electrode access end.

7. The battery pack enclosure of claim 4, wherein, The box is provided with a plurality of placement areas for accommodating battery modules, and further comprises a power distribution unit, and an outer wall surface of the box is provided with a support portion for loading the power distribution unit and an electrical connector connected to the battery pack, the power distribution unit is connected to the electrical connector and the battery modules respectively to realize power distribution of the battery modules in the box.

8. The battery pack enclosure of claim 1, wherein, The box comprises a power supply side provided with the electrical connector, and the support portion is located on the power supply side, and the battery modules comprise a charging side provided with an electrical connection end, and the charging side is located on the same side as the power supply side.

9. The battery pack enclosure of claim 8, wherein, A plurality of the battery modules are connected in series and / or parallel to the power distribution unit, the electrical connector is provided with a power transmission line corresponding to each of the battery modules, and the power distribution unit is provided with a power transmission socket connected to each of the power transmission lines.

10. The battery pack enclosure of claim 9, wherein, The placement areas comprise first and second placement areas arranged in a vertical direction for placing upper and lower battery modules respectively, and the corresponding upper and lower battery modules are connected in series to form a battery pack, and each battery pack is connected in parallel to the power distribution unit.

11. The battery pack enclosure of claim 8, wherein, The power transmission socket comprises a positive electrode socket and a negative electrode socket, and the power transmission socket faces the electrical connector. The electrical connector comprises a positive electrode access end and a negative electrode access end arranged at intervals in a horizontal direction, the power distribution unit comprises a positive electrode distribution unit and a negative electrode distribution unit arranged on both sides of the electrical connector, the positive electrode distribution unit is provided with the positive electrode socket, the negative electrode distribution unit is provided with the negative electrode socket, the positive electrode distribution unit is located on one side close to the positive electrode access end, and the negative electrode distribution unit is located on one side close to the negative electrode access end. The box is provided with a plurality of placement areas for accommodating battery modules, and further comprises a power distribution unit, and an outer wall surface of the box is provided with a support portion for loading the power distribution unit and an electrical connector connected to the battery pack, the power distribution unit is connected to the electrical connector and the battery modules respectively to realize power distribution of the battery modules in the box. The support portion comprises a support frame fixed to the outside of the box, the support frame comprises a bottom plate and side plates connected to both sides of the bottom plate, the power distribution unit is placed on the bottom plate, and a clearance is provided between the side of the power distribution unit and the side plate. The support portion comprises a plurality of positioning members fixed to the bottom plate, and the positioning members abut against the side wall of the power distribution unit to limit the power distribution unit on the bottom plate. The power distribution unit is square, the positioning members comprise positioning seats abutting against four corners of the power distribution unit, the positioning seats are provided with bottom positioning holes, and the positioning seats are fixed to the bottom plate through fasteners passing through the positioning holes. The side plate is provided with a wiring port through which a power transmission line connected to the power distribution unit passes.

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