Battery pack PDU device for electric heavy truck

Abstract

The utility model discloses a battery pack PDU device for an electric heavy truck, which comprises a box body with an opening at the upper end and an upper cover, the upper cover covers the opening of the box body, and an electric device mounting seat, an electric device assembly, a copper bar assembly, a BMS adapter bracket and a BMS controller which are distributed from bottom to top are arranged in the box body. A plurality of columns are fixedly arranged on the inner bottom surface of the box body, the electric device mounting seat is detachably arranged at the upper ends of the columns, the electric device assembly is arranged on the upper end surface of the electric device mounting seat, the copper bar assembly is arranged at the upper end of the electric device assembly, the BMS adapter bracket is arranged above the copper bar assembly, and the BMS adapter bracket is arranged above the copper bar assembly. The BMS controller is arranged on the upper end surface of the BMS adapter bracket; the box has the advantages that the electric devices can be orderly arranged in the box body, and the space utilization rate is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of PDU structures, and in particular relates to a battery pack PDU device for an electric heavy truck. Background Art

[0002] Trucks are large vehicles that are usually used for the transportation of goods and freight services. During operation, trucks produce some pollutants, such as carbon monoxide, nitrogen oxides, hydrocarbons, particulate matter and other harmful gases, as well as volatile organic compounds (VOCs). It can be seen that trucks are highly polluting and have gradually transformed into electric heavy trucks.

[0003] Electric heavy trucks generally require a lot of electricity, even up to 300KWH, which requires multiple battery packs to be connected in series / parallel, resulting in the need for a PDU device to manage and distribute power. However, existing PDU devices contain many electrical components, and the space for arranging electrical components in the PDU is also relatively limited. How to reasonably arrange the electrical components in the PDU in a limited space has become the main consideration for current designers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a battery pack PDU device for an electric heavy truck, which can arrange electrical components in an orderly manner in a box body and has a good space utilization rate.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a battery pack PDU device for electric heavy trucks, comprising a box body with an upper opening and an upper cover, the upper cover covering the opening of the box body, the box body is provided with an electrical component mounting seat, an electrical component assembly, a copper busbar assembly, a BMS adapter bracket and a BMS controller distributed from bottom to top, a plurality of columns are fixedly provided on the inner bottom surface of the box body, the electrical component mounting seat is detachably provided on the upper end of the column, the electrical component assembly is provided on the upper end surface of the electrical component mounting seat, the copper busbar assembly is provided on the upper end of the electrical component assembly, the BMS adapter bracket is provided above the copper busbar assembly, and the BMS controller is provided on the upper end surface of the BMS adapter bracket.

[0006] Preferably, the electrical component assembly includes nine electrical components, which are a pre-charging resistor, a pre-charging relay, a main positive relay, a main negative relay, a current sensor, a fuse, a first heating relay, a second heating relay and a third heating relay. The main positive relay, the first heating relay and the second heating relay are distributed on the center line of the electrical component mounting seat from back to front, the main negative relay and the current sensor are both located on the left side of the first heating relay, the pre-charging resistor and the pre-charging relay are both located on the right side of the first heating relay, and the fuse and the third heating relay are both located on the front side of the second heating relay.

[0007] Preferably, nine mounting slots are provided on the electrical component mounting seat, and the nine mounting slots correspond one-to-one to the nine electrical components, and the electrical components are mounted in the corresponding mounting slots.

[0008] Preferably, a plurality of heat dissipation holes are provided at the bottom of the installation slot for installing the fuse.

[0009] Preferably, the electrical component mounting seat is provided with a plurality of clamping seats for clamping wiring harnesses, and the clamping seats are staggered with the mounting grooves.

[0010] Preferably, the copper bar assembly includes a main positive input copper bar, a main positive output copper bar, a main negative input copper bar and a main negative output copper bar, the main positive input copper bar is connected to one end of the main positive relay, the other end of the main positive relay, one end of the first heating relay, one end of the second heating relay and the pre-charging resistor are connected through the main positive output copper bar, the main negative input copper bar is connected to one end of the main negative relay, the main negative input copper bar is passed through the current sensor, and the main negative output copper bar is connected to one end of the main negative relay.

[0011] Preferably, a plurality of support blocks extending toward the center direction of the box body are fixedly provided at the upper end of the box body, a first screw hole and a first bolt are provided on the support block, a plurality of first through holes and a clamping hole for clamping the wiring harness are provided on the BMS adapter bracket, the plurality of first through holes correspond one-to-one to the plurality of support blocks, the first bolt passes through the corresponding first through holes and is threadedly connected with the first screw hole, and a plurality of first reinforcing ribs are provided on the lower end surface of the BMS adapter bracket.

[0012] Preferably, two opposite outer sides of the box body are provided with an extension plate and a plurality of sockets, the extension plate is located at the lower part of the side of the box body, at least two connecting holes are provided on the extension plate, and the sockets are used to connect the through-wall terminal, the communication plug-in or the heating plug-in.

[0013] Preferably, a plurality of second reinforcing ribs are provided on the lower end surface of the electrical component mounting seat.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] 1. Distribute the electrical component mounting base, electrical component assembly, copper busbar assembly, BMS adapter bracket and BMS controller from bottom to top in the box. The layered design helps to improve the isolation between the various components. The vertical layout helps to save space and improve space utilization.

[0016] 2. The electrical component mounting base, electrical component assembly, and copper busbar assembly form one module, and the BMS adapter bracket and BMS controller form another module. After the two modules are assembled separately, they can be installed into the box, which is convenient for arranging the electrical components in the box in an orderly manner. The installation is more convenient, which helps to improve the assembly efficiency and facilitates the later maintenance;

[0017] 3. By integrating the BMS controller into the box, the volume of the entire battery system is made more compact, which is especially important in vehicles or equipment with limited space. It also helps to simplify the wiring between the BMS controller and the electrical component assembly, reduce the wiring length and complexity, and better protect the BMS controller from the influence of the external environment, so as to improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the local structure of the utility model Figure 1 ;

[0020] Figure 3 It is a structural schematic diagram of the box body in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the electrical component mounting base and the electrical component assembly in the utility model;

[0022] Figure 5 The structure of the electrical device mounting base in the utility model is shown in FIG. Figure 1 ;

[0023] Figure 6 It is a structural schematic diagram of the electrical component mounting base, the electrical component assembly and the copper busbar assembly in the utility model;

[0024] Figure 7 The structure of the BMS adapter bracket in this utility model is shown as follows Figure 1 ;

[0025] Figure 8The structure of the BMS adapter bracket in this utility model is shown as follows Figure 2 ;

[0026] Fig. 9 The structure of the electrical device mounting base in the utility model is shown in FIG. Figure 2 .

[0027] In the figure: 1. box body; 11. column; 12. support block; 121. first screw hole; 13. extension plate; 131. connection hole; 14. socket; 2. electrical component mounting seat; 21. mounting slot; 211. heat dissipation hole; 22. snap-on seat; 23. second reinforcing rib; 3. electrical component assembly; 31. pre-charging resistor; 32. pre-charging relay; 33. main positive relay; 34. main negative relay; 35. current sensor; 36. fuse; 37. first heating relay; 38. second heating relay; 39. third heating relay; 4. copper busbar assembly; 41. main positive input copper busbar; 42. main positive output copper busbar; 43. main negative input copper busbar; 44. main negative output copper busbar; 5. BMS adapter bracket; 51. first perforation; 52. snap-on hole; 53. first reinforcing rib; 6. BMS controller. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] Embodiment 1: Figures 1 to 3 As shown, a battery pack PDU device for an electric heavy truck includes a box body 1 with an opening at the upper end and an upper cover (not shown in the figure), the upper cover covers the opening of the box body 1, and an electrical component mounting seat 2, an electrical component assembly 3, a copper busbar assembly 4, a BMS adapter bracket 5 and a BMS controller 6 are arranged from bottom to top in the box body 1, a plurality of columns 11 are fixedly arranged on the inner bottom surface of the box body 1, the electrical component mounting seat 2 is detachably arranged on the upper end of the column 11, the electrical component assembly 3 is arranged on the upper end surface of the electrical component mounting seat 2, the copper busbar assembly 4 is arranged on the upper end of the electrical component assembly 3, the BMS adapter bracket 5 is arranged above the copper busbar assembly 4, and the BMS controller 6 is arranged on the upper end surface of the BMS adapter bracket 5.

[0031] In this embodiment, the electrical component mounting base 2, the electrical component assembly 3, and the copper busbar assembly 4 form a module, and the BMS adapter bracket 5 and the BMS controller 6 form another module. After the two modules are assembled, they can be installed into the box 1 in turn.

[0032] Conventionally, a second screw hole and a second bolt are provided at the upper end of the column 11 , and a second through hole is provided on the electrical device mounting base 2 . The second bolt passes through the second through hole and is threadedly connected with the second screw hole to fix the electrical device mounting base 2 .

[0033] Embodiment 2: Figures 4 to 6 As shown, the rest of the parts are the same as those in Example 1, except that the electrical component assembly 3 includes nine electrical components, which are a pre-charging resistor 31, a pre-charging relay 32, a main positive relay 33, a main negative relay 34, a current sensor 35, a fuse 36, a first heating relay 37, a second heating relay 38 and a third heating relay 39. The main positive relay 33, the first heating relay 37 and the second heating relay 38 are distributed on the center line of the electrical component mounting base 2 from back to front, the main negative relay 34 and the current sensor 35 are both located on the left side of the first heating relay 37, the pre-charging resistor 31 and the pre-charging relay 32 are both located on the right side of the first heating relay 37, and the fuse 36 and the third heating relay 39 are both located on the front side of the second heating relay 38.

[0034] In this embodiment, nine mounting slots 21 are provided on the electrical component mounting base 2 . The nine mounting slots 21 correspond to nine electrical components one by one, and the electrical components are mounted in the corresponding mounting slots 21 .

[0035] In this embodiment, a plurality of heat dissipation holes 211 are provided at the bottom of the installation slot 21 for installing the fuse 36 , which are helpful to quickly dissipate the heat of the fuse 36 .

[0036] In this embodiment, a plurality of clamping seats 22 for clamping wiring harnesses are provided on the electrical component mounting seat 2. The clamping seats 22 are staggered with the mounting grooves 21. A certain amount of wiring harnesses are required when connecting electrical components. The wiring harnesses are fixed by the clamping seats 22 so that the wiring harnesses are arranged along a specified route, thereby standardizing the wiring harnesses and facilitating installation and maintenance.

[0037] In this embodiment, the copper bar assembly 4 includes a main positive input copper bar 41, a main positive output copper bar 42, a main negative input copper bar 43 and a main negative output copper bar 44. The main positive input copper bar 41 is connected to one end of the main positive relay 33, and the other end of the main positive relay 33, one end of the first heating relay 37, one end of the second heating relay 38 and the pre-charging resistor 31 are connected through the main positive output copper bar 42. The main negative input copper bar 43 is connected to one end of the main negative relay 34. The main negative input copper bar 43 is penetrated by a current sensor 35, and the current sensor 35 is used to detect the current on the main negative input copper bar 43. The main negative output copper bar 44 is connected to the other end of the main negative relay 34.

[0038] Embodiment 3: Figure 3 , Figures 7 to 9 As shown, the rest of the parts are the same as the first embodiment, except that a plurality of support blocks 12 extending toward the center of the box body 1 are fixedly provided at the upper end of the box body 1, and a first screw hole 121 and a first bolt (not shown in the figure) are provided on the support block 12, and a plurality of first through holes 51 and a clamping hole 52 for clamping the wiring harness are provided on the BMS adapter bracket 5, and the plurality of first through holes 51 correspond to the plurality of support blocks 12 one by one, and the first bolt passes through the corresponding first through hole 51 and is threadedly connected with the first screw hole 121, and a plurality of first reinforcing ribs 53 are provided on the lower end surface of the BMS adapter bracket 5. Among them, the first through hole 51 can adopt a waist-shaped hole to overcome the processing tolerance, and the applicability is better; the first reinforcing rib 53 can improve the structural strength of the BMS adapter bracket 5, and some of the first reinforcing ribs 53 adopt a mesh structure, and the other part of the first reinforcing ribs 53 adopt a divergent structure.

[0039] In this embodiment, an extension plate 13 and a plurality of sockets 14 are provided on two opposite outer sides of the box body 1. The extension plate 13 is located at the lower part of the side of the box body 1. At least two connecting holes 131 are provided on the extension plate 13. The sockets 14 are used to connect the through-wall terminal, the communication plug-in or the heating plug-in. The battery pack PDU device can be fixed to other structures through the connecting holes 131.

[0040] In this embodiment, a plurality of second reinforcing ribs 23 are provided on the lower end surface of the electrical component mounting base 2. The second reinforcing ribs 23 can improve the structural strength of the electrical component mounting base 2. Some of the second reinforcing ribs 23 have a mesh structure, while other parts of the second reinforcing ribs 23 have a divergent structure.

[0041] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A battery pack PDU device for an electric heavy truck, comprising a box body (1) with an upper opening and an upper cover, wherein the upper cover is covered at the opening of the box body (1), characterized in that The box (1) is provided with an electrical component mounting seat (2), an electrical component assembly (3), a copper busbar assembly (4), a BMS adapter bracket (5) and a BMS controller (6) which are distributed from bottom to top. A plurality of columns (11) are fixedly provided on the inner bottom surface of the box (1). The electrical component mounting seat (2) is detachably provided on the upper end of the column (11). The electrical component assembly (3) is provided on the upper end surface of the electrical component mounting seat (2). The copper busbar assembly (4) is provided on the upper end of the electrical component assembly (3). The BMS adapter bracket (5) is provided above the copper busbar assembly (4). The BMS controller (6) is provided on the upper end surface of the BMS adapter bracket (5).

2. A battery pack PDU device for an electric heavy truck according to claim 1, characterized in that The electrical component assembly (3) includes nine electrical components, which are respectively a pre-charging resistor (31), a pre-charging relay (32), a main positive relay (33), a main negative relay (34), a current sensor (35), a fuse (36), a first heating relay (37), a second heating relay (38) and a third heating relay (39). The main positive relay (33), the first heating relay (37) and the second heating relay (38) are distributed from back to front on the center line of the electrical component mounting base (2). The main negative relay (34) and the current sensor (35) are both located on the left side of the first heating relay (37). The pre-charging resistor (31) and the pre-charging relay (32) are both located on the right side of the first heating relay (37). The fuse (36) and the third heating relay (39) are both located in front of the second heating relay (38).

3. A battery pack PDU device for an electric heavy truck according to claim 2, characterized in that Nine mounting grooves (21) are arranged on the electrical component mounting seat (2), the nine mounting grooves (21) correspond to the nine electrical components one by one, and the electrical components are mounted in the corresponding mounting grooves (21).

4. A battery pack PDU device for an electric heavy truck according to claim 3, characterized in that The bottom of the installation slot (21) for installing the fuse (36) is provided with a plurality of heat dissipation holes (211).

5. The battery pack PDU device for an electric heavy truck according to claim 3 is characterized in that The electrical component mounting seat (2) is provided with a plurality of clamping seats (22) for clamping wiring harnesses, and the clamping seats (22) are staggered with the mounting grooves (21).

6. A battery pack PDU device for an electric heavy truck according to claim 2, characterized in that The copper bar assembly (4) comprises a main positive input copper bar (41), a main positive output copper bar (42), a main negative input copper bar (43) and a main negative output copper bar (44); the main positive input copper bar (41) is connected to one end of the main positive relay (33); the other end of the main positive relay (33), one end of the first heating relay (37), one end of the second heating relay (38) and the pre-charging resistor (31) are connected via the main positive output copper bar (42); the main negative input copper bar (43) is connected to one end of the main negative relay (34); the main negative input copper bar (43) is penetrated by the current sensor (35); and the main negative output copper bar (44) is connected to one end of the main negative relay (34).

7. The battery pack PDU device for an electric heavy truck according to claim 1 is characterized in that A plurality of support blocks (12) extending toward the center of the box body (1) are fixedly provided at the upper end of the box body (1), and a first screw hole (121) and a first bolt are provided on the support block (12). A plurality of first through holes (51) and a clamping hole (52) for clamping a wiring harness are provided on the BMS adapter bracket (5), and the plurality of first through holes (51) correspond one-to-one to the plurality of support blocks (12). The first bolt passes through the corresponding first through holes (51) and is threadedly connected to the first screw hole (121). A plurality of first reinforcing ribs (53) are provided on the lower end surface of the BMS adapter bracket (5).

8. The battery pack PDU device for an electric heavy truck according to claim 1 is characterized in that An extension plate (13) and a plurality of sockets (14) are provided on two opposite outer sides of the box body (1); the extension plate (13) is located at the lower part of the side of the box body (1); at least two connection holes (131) are provided on the extension plate (13); and the sockets (14) are used to connect a through-wall terminal, a communication plug-in or a heating plug-in.

9. The battery pack PDU device for an electric heavy truck according to claim 1 is characterized in that The lower end surface of the electrical component mounting seat (2) is provided with a plurality of second reinforcing ribs (23).

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