CN222191558U

CN222191558U - A battery pack PDU device for electric heavy trucks

Info

Publication number: CN222191558U
Application number: CN202420803571.8U
Authority: CN
Inventors: 黄小辉; 夏智力; 杨明
Original assignee: Chongqing Ganfeng Power Technology Co ltd
Current assignee: Chongqing Ganfeng Power Technology Co ltd
Priority date: 2024-04-18
Filing date: 2024-04-18
Publication date: 2024-12-17
Anticipated expiration: 2034-04-18

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, wherein the upper cover covers the opening of the box body, an electric device mounting seat, an electric device assembly, a copper bar assembly, a BMS switching support and a BMS controller are arranged in the box body from bottom to top, 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 end 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 switching support is arranged above the copper bar assembly, and the BMS controller is arranged on the upper end surface of the BMS switching support.

Description

Battery pack PDU device for electric heavy truck

Technical Field

The utility model belongs to the technical field of PDU structures, and particularly relates to a battery pack PDU device for an electric heavy truck.

Background

Trucks are large trucks that are commonly used for transportation and freight services of goods and produce some contaminants during operation, such as carbon monoxide, nitrogen oxides, hydrocarbons, particulate matter and other hazardous gases, as well as Volatile Organic Compounds (VOCs). It can be seen that trucks are more contaminated and have gradually been turned into the electric heavy truck direction.

The electric quantity required by the electric heavy truck is generally more, even up to 300KWH, and a plurality of battery packs are required to be connected in series/parallel, so that the electric heavy truck needs a PDU device to manage and distribute electric power, but the existing PDU device contains more electric devices, the arrangement space of the electric devices in the PDU is limited, and how to reasonably arrange the electric devices in the PDU in the limited space becomes a main consideration of the current designer.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a battery pack PDU device for an electric heavy truck, which can orderly arrange electric devices into a box body and has better space utilization rate.

The technical scheme includes that the battery pack PDU device for the electric heavy truck comprises a box body with an opening at the upper end and an upper cover, wherein the upper cover covers the opening of the box body, an electric device mounting seat, an electric device assembly, a copper bar assembly, a BMS switching support and a BMS controller are distributed in the box body from bottom to top, 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 end of the columns, the electric device assembly is arranged on the upper end face of the electric device mounting seat, the copper bar assembly is arranged at the upper end of the electric device assembly, the BMS switching support is arranged above the copper bar assembly, and the BMS controller is arranged on the upper end face of the BMS switching support.

Preferably, the electric device assembly comprises nine electric devices, wherein the nine electric devices are respectively 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 a central line of the electric device mounting seat from back to front, the main negative relay and the current sensor are all located on the left side of the first heating relay, the pre-charging resistor and the pre-charging relay are all located on the right side of the first heating relay, and the fuse and the third heating relay are all located on the front side of the second heating relay.

Preferably, nine mounting grooves are formed in the electric device mounting base, the nine mounting grooves correspond to the nine electric devices one by one, and the electric devices are mounted in the corresponding mounting grooves.

Preferably, a bottom of the mounting groove for mounting the fuse is provided with a plurality of heat radiation holes.

Preferably, the electrical device mounting base is provided with a plurality of clamping bases for clamping the wire harness, and the clamping bases are staggered with the mounting groove.

Preferably, the copper bar assembly comprises 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, wherein the main positive input copper bar is connected with 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 with one end of the main negative relay, the main negative input copper bar is penetrated by the current sensor, and the main negative output copper bar is connected with one end of the main negative relay.

Preferably, the upper end of the box body is fixedly provided with a plurality of supporting blocks extending towards the center direction of the box body, a first screw hole and a first bolt are arranged on the supporting blocks, a plurality of first through holes and clamping holes for clamping wire harnesses are arranged on the BMS switching support, the first through holes and the supporting blocks are in one-to-one correspondence, the first bolts penetrate through the corresponding first through holes and then are in threaded connection with the first screw holes, and a plurality of first reinforcing ribs are arranged on the lower end face of the BMS switching support.

Preferably, the two opposite outer side surfaces of the box body are respectively provided with an extension plate and a plurality of sockets, the extension plates are positioned at the lower parts of the side surfaces of the box body, at least two connecting holes are formed in the extension plates, and the sockets are used for connecting through-wall terminals, communication plug-ins or heating plug-ins.

Preferably, a plurality of second reinforcing ribs are arranged on the lower end face of the electric device mounting seat.

Compared with the prior art, the utility model has the advantages that:

1. The electric device mounting seat, the electric device assembly, the copper bar assembly, the BMS switching support and the BMS controller are distributed into the box body from bottom to top, and the layered design is adopted, so that the isolation among all the components is improved, the vertical layout is beneficial to saving space, and the space utilization rate is improved;

2. The electric device mounting seat, the electric device assembly and the copper bar assembly form a module, the BMS switching support and the BMS controller form another module, and the two modules are assembled respectively and then are put into the box body, so that the electric devices can be arranged in the box body in order, the installation is convenient, the assembly efficiency is improved, and the later maintenance is convenient;

3. Through with the BMS controller integrated into the box for whole battery system's volume is compacter, especially in vehicle or the equipment in limited space more important, helps simplifying the wiring between BMS controller and the electrical equipment assembly simultaneously, reduces wiring length and reduces the complexity, and protection BMS controller that in addition also can be better makes the BMS controller avoid external environment's influence, and the security is better.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a part of the present utility model;

FIG. 3 is a schematic view of the structure of the case in the present utility model;

FIG. 4 is a schematic view of an electrical device mounting base and electrical device assembly according to the present utility model;

FIG. 5 is a schematic diagram of an electrical device mounting base according to the present utility model;

FIG. 6 is a schematic view of the structure of the electrical device mounting base, the electrical device assembly and the copper bar assembly of the present utility model;

fig. 7 is a schematic view illustrating a structure of a BMS adapter bracket according to the present utility model;

fig. 8 is a schematic structural view of a BMS adapter bracket according to the present utility model;

fig. 9 is a schematic diagram of a second structure of the electrical device mounting base according to the present utility model.

In the figure, 1, a box body, 11, a column body, 12, a supporting block, 121, a first screw hole, 13, an extension plate, 131, a connecting hole, 14, a socket, 2, an electric device mounting seat, 21, a mounting groove, 211, a heat dissipation hole, 22, a clamping seat, 23, a second reinforcing rib, 3, an electric device assembly, 31, a pre-charging resistor, 32, a pre-charging relay, 33, a main positive relay, 34, a main negative relay, 35, a current sensor, 36, a fuse, 37, a first heating relay, 38, a second heating relay, 39, a third heating relay, 4, a copper bar assembly, 41, a main positive input copper bar, 42, a main positive output copper bar, 43, a main negative input copper bar, 44, a main negative output copper bar, 5, a BMS switching bracket, 51, a first through hole, 52, a clamping hole, 53, a first reinforcing rib and a 6, and a BMS controller.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

First embodiment as shown in fig. 1 to 3, a battery pack PDU device for an electric heavy truck includes a box 1 with an opening at an upper end and an upper cover (not shown in the drawings), wherein the upper cover covers the opening of the box 1, an electric device mounting seat 2, an electric device assembly 3, a copper bar assembly 4, a BMS switching support 5 and a BMS controller 6 distributed from bottom to top are arranged in the box 1, a plurality of columns 11 are fixedly arranged on an inner bottom surface of the box 1, the electric device mounting seat 2 is detachably arranged at an upper end of the columns 11, the electric device assembly 3 is arranged on an upper end surface of the electric device mounting seat 2, the copper bar assembly 4 is arranged at an upper end of the electric device assembly 3, the BMS switching support 5 is arranged above the copper bar assembly 4, and the BMS controller 6 is arranged on an upper end surface of the BMS switching support 5.

In this embodiment, the electric device mounting base 2, the electric device assembly 3, and the copper bar assembly 4 form a module, and the BMS switching support 5 and the BMS controller 6 form another module, and the two modules are assembled respectively and then sequentially installed into the box 1.

Conventionally, the upper end of the column 11 is provided with a second screw hole and a second bolt, the electric device mounting seat 2 is provided with a second through hole, and the second bolt passes through the second through hole and is in threaded connection with the second screw hole so as to fix the electric device mounting seat 2.

In the second embodiment, as shown in fig. 4 to 6, the rest is the same as the first embodiment, except that the electric device assembly 3 includes nine electric devices, the nine electric devices are respectively a precharge resistor 31, a precharge 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 a central line of the electric device mounting seat 2 from back to front, the main negative relay 34 and the current sensor 35 are all located on the left side of the first heating relay 37, the precharge resistor 31 and the precharge relay 32 are all located on the right side of the first heating relay 37, and the fuse 36 and the third heating relay 39 are all located on the front side of the second heating relay 38.

In this embodiment, nine mounting grooves 21 are provided on the electrical device mounting base 2, the nine mounting grooves 21 correspond to nine electrical devices one by one, and the electrical devices are mounted in the corresponding mounting grooves 21.

In this embodiment, the bottom of the mounting groove 21 for mounting the fuse 36 is provided with a plurality of heat dissipation holes 211, which is helpful for rapidly dissipating the heat of the fuse 36.

In this embodiment, be provided with a plurality of bayonet sockets 22 that are used for joint pencil on the electrical component mount pad 2, bayonet socket 22 staggers with mounting groove 21, and the electrical component needs to use a certain amount of pencil when being connected, through the fixed pencil of bayonet socket 22, makes the pencil arrange according to appointed route, i.e. the pencil standardization, easy installation maintenance.

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 with 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 precharge resistor 31 are connected through the main positive output copper bar 42, the main negative input copper bar 43 is connected with one end of the main negative relay 34, the main negative input copper bar 43 is provided with a current sensor 35 in a penetrating manner, and the current sensor 35 is used for detecting the current on the main negative input copper bar 43, and the main negative output copper bar 44 is connected with the other end of the main negative relay 34.

In the third embodiment, as shown in fig. 3 and fig. 7 to fig. 9, the rest is the same as the first embodiment, except that a plurality of supporting blocks 12 extending toward the center direction of the case 1 are fixedly provided at the upper end of the case 1, a first screw hole 121 and a first bolt (not shown in the drawings) are provided on the supporting blocks 12, a plurality of first through holes 51 and a clamping hole 52 for clamping a wire harness are provided on the BMS adapting bracket 5, the plurality of first through holes 51 are in one-to-one correspondence with the plurality of supporting blocks 12, the first bolts are screwed with the first screw holes 121 after passing through the corresponding first through holes 51, and a plurality of first reinforcing ribs 53 are provided on the lower end surface of the BMS adapting bracket 5. The first through holes 51 can be waist-shaped holes to overcome machining tolerance, applicability is good, the first reinforcing ribs 53 can improve structural strength of the BMS switching support 5, part of the first reinforcing ribs 53 are of a net-shaped structure, and the other part of the first reinforcing ribs 53 are of a divergent structure.

In this embodiment, two opposite outer sides of the case 1 are provided with an extension board 13 and a plurality of sockets 14, the extension board 13 is located at the lower part of the side of the case 1, at least two connection holes 131 are provided on the extension board 13, and the sockets 14 are used for connecting through-wall terminals, communication plug-ins or heating plug-ins, and the battery pack PDU device is fixed on other structures through the connection holes 131.

In this embodiment, the lower end face of the electric device mounting seat 2 is provided with a plurality of second reinforcing ribs 23, the second reinforcing ribs 23 can improve the structural strength of the electric device mounting seat 2, part of the second reinforcing ribs 23 adopt a reticular structure, and the other part of the second reinforcing ribs 23 adopt a divergent structure.

The utility model has been described above by way of example with reference to the accompanying drawings, it is clear that the implementation of the utility model is not limited to the above-described manner, but it is within the scope of the utility model to apply the inventive concept and technical solution to other situations as long as various improvements made by the inventive concept and technical solution are adopted or without any improvement.

Claims

1. The utility model provides a battery package PDU device that electronic heavily blocked was used, includes upper end open-ended box (1) and upper cover, the upper cover lid is in the opening part of box (1), its characterized in that be provided with electric appliance mount pad (2), electric appliance assembly (3), copper bar assembly (4), BMS switching support (5) and BMS controller (6) of distributing from the bottom up in box (1), the interior bottom surface of box (1) is fixed to be provided with a plurality of cylinder (11), electric appliance mount pad (2) detachable sets up the upper end of cylinder (11), electric appliance assembly (3) set up on the up end of electric appliance mount pad (2), copper bar assembly (4) set up the upper end of electric appliance assembly (3), BMS switching support (5) set up the top of copper bar assembly (4), BMS controller (6) set up on the up end of BMS switching support (5).

2. The battery pack PDU device for an electric heavy truck according to claim 1, wherein the electric device assembly (3) includes nine electric devices, the nine electric devices are respectively a precharge resistor (31), a precharge 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 a central line of the electric device mounting base (2) from back to front, the main negative relay (34) and the current sensor (35) are all located on the left side of the first heating relay (37), the precharge resistor (31) and the precharge relay (32) are all located on the right side of the first heating relay (37), and the third heating relay (36) and the third heating relay (38) are all located on the front side of the second heating relay (38).

3. The battery pack PDU device for the electric heavy truck according to claim 2, wherein nine mounting grooves (21) are provided on the electric device mounting base (2), the nine mounting grooves (21) are in one-to-one correspondence with the nine electric devices, and the electric devices 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 a plurality of heat radiation holes (211) are provided at the bottom of the mounting groove (21) for mounting the fuse (36).

5. A battery pack PDU device for an electric heavy truck according to claim 3, characterized in that a plurality of clamping seats (22) for clamping a wire harness are provided on the electric device mounting seat (2), and the clamping seats (22) are staggered with the mounting groove (21).

6. The battery pack PDU device for the 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), wherein the main positive input copper bar (41) is connected with 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 through the main positive output copper bar (42), the main negative input copper bar (43) is connected with 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 with one end of the main negative relay (34).

7. The battery pack PDU device for the electric heavy truck according to claim 1, wherein a plurality of supporting blocks (12) extending towards the center direction of the box body (1) are fixedly arranged at the upper end of the box body (1), a first screw hole (121) and a first bolt are arranged on the supporting blocks (12), a plurality of first through holes (51) and clamping holes (52) for clamping a wire harness are arranged on the BMS switching support (5), the first through holes (51) are in one-to-one correspondence with the supporting blocks (12), the first bolts penetrate through the corresponding first through holes (51) and are in threaded connection with the first screw holes (121), and a plurality of first reinforcing ribs (53) are arranged on the lower end face of the BMS switching support (5).

8. The battery pack PDU device for the electric heavy truck according to claim 1, wherein an extension plate (13) and a plurality of sockets (14) are arranged on two opposite outer sides of the box body (1), the extension plate (13) is positioned at the lower part of the side surface of the box body (1), at least two connecting holes (131) are arranged on the extension plate (13), and the sockets (14) are used for connecting through-wall terminals, communication plug-ins or heating plug-ins.

9. The battery pack PDU device for an electric heavy truck as recited in claim 1, characterized in that a plurality of second reinforcing ribs (23) are provided on a lower end surface of the electric device mounting base (2).