CN210430436U

CN210430436U - BDU for battery pack and shell thereof

Info

Publication number: CN210430436U
Application number: CN201921359126.2U
Authority: CN
Inventors: 于莉; 马腾飞; 宋雷雷; 孙永刚
Original assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Current assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-04-28
Anticipated expiration: 2029-08-20

Abstract

The utility model relates to a BDU for battery pack and a shell thereof, wherein, the shell of the BDU comprises an upper shell and a lower shell, the upper shell covers the upper part of the lower shell and encloses to form an installation cavity for installing each electric element of the BDU for battery pack; the lower end face of the bottom wall of the lower shell is provided with a wiring structure and a plurality of clamping pieces arranged at intervals along the length direction of the wiring structure, the wiring structure is used for installing a connecting wire, and the clamping pieces can be matched with the wiring structure to fix the connecting wire and the bottom wall; the diapire is equipped with and communicates in the installation cavity and walks the line hole of line structure, and the connecting wire is for passing the line hole and connecting in the high-voltage line and the low-voltage line between each electric elements. The BDU for the battery pack has the advantages that the line connection in the shell can be simplified, the inner space of the shell is saved, the BDU is convenient to install and maintain, and the disassembly and assembly efficiency is improved.

Description

BDU for battery pack and shell thereof

Technical Field

The utility model relates to a power battery technical field, concretely relates to BDU for battery package and casing thereof.

Background

The BDU (Battery Disconnect Unit, distribution box) for the Battery package includes the casing and locates electric elements such as relay, pre-charge resistance in the casing, because the installation space restriction, casing inner structure is comparatively compact, and interconnecting link between each electric element often more and connect comparatively complicatedly, interconnecting link occupation space is great and waste time and energy when installation and maintenance.

Therefore, how to simplify the line connection in the casing of the BDU for the battery pack, save the internal space of the casing, facilitate the operation during installation and maintenance, and improve the disassembly and assembly efficiency is a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a BDU for battery package and casing thereof can simplify the line connection in BDU for battery package's the casing, saves the inner space of casing, is convenient for install with overhaul the time operation, improve dismouting efficiency.

In order to solve the technical problem, the utility model provides a casing of BDU for battery pack, which comprises an upper casing and a lower casing, wherein the upper casing covers the lower casing and encloses to form an installation cavity for installing each electrical element of the BDU for battery pack; the lower end face of the bottom wall of the lower shell is provided with a wiring structure and a plurality of clamping pieces which are arranged at intervals along the length direction of the wiring structure, the wiring structure is used for installing a connecting wire, and the clamping pieces can be matched with the wiring structure so as to fix the connecting wire and the bottom wall; the bottom wall is provided with a wiring hole communicated with the mounting cavity and the wiring structure, and the connecting wire is a high-voltage wire and a low-voltage wire which penetrate through the wiring hole and are connected among the electric elements.

The high-voltage line and the low-voltage line that connect between each electric element in this battery package uses BDU's casing walk the line equipartition and arrange the bottom outside in the casing to simplify the line connection between the inside each electric element of casing, reduce the occupation space of circuit in the casing, be convenient for arrange between each electric element in the casing, be convenient for installation and maintenance operation. Simultaneously, with the high-voltage line between each electric elements and the low-voltage line all be not as for the casing outside, because outside is walked the line and is not received each electric elements's restriction, walk the line structure and can set up according to the concrete position of walking the line hole, guarantee that the length of connecting wire is shortest, simultaneously, still can reduce the inner space demand of this casing, and then reduce the volume of this casing, be convenient for this battery package uses BDU's overall arrangement.

Optionally, the bottom wall of the lower shell is provided with a mounting platform for mounting the electrical component, and the mounting platform is provided with a mounting point corresponding to the electrical component; the bottom end of the side wall of the lower shell extends out of the lower surface of the bottom wall, and the height of the bottom end of the side wall extending out of the lower surface of the bottom wall is not smaller than the height of the wiring structure.

Optionally, a support is further disposed on the lower end face of the bottom wall, and the height of the support is the same as the height of the bottom end of the side wall extending out of the lower surface of the bottom wall.

Optionally, the routing structure is a routing groove formed in the lower end surface of the bottom wall.

Optionally, the mounting platform is provided with a mounting groove for mounting the pre-charging resistor, and a notch of the mounting groove is provided with a limiting part for limiting the pre-charging resistor in the mounting groove.

Optionally, the number of the limiting parts is at least two, and the two limiting parts are arranged at intervals along the length direction of the mounting groove.

Optionally, each of the limiting portions includes two elastic limiting members respectively disposed on two sides of the slot.

Optionally, an inclined surface is disposed at a top end of each elastic limiting member, and an end of the inclined surface facing the mounting groove is lower than an end of the inclined surface far away from the mounting groove.

Optionally, the diapire still is equipped with the through-hole, the pore wall of through-hole is equipped with integrated into one piece's installation piece, the installation piece is used for with adapter joint is fixed.

In addition, the utility model also provides a BDU is used to battery package, it includes electric element and as above the casing, electric element is located in the casing, just electric element includes insurance, current sensor, pre-charge resistance and relay.

The technical effect of the BDU for battery pack having the casing is similar to that of the casing, and is not repeated herein for saving space.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a BDU for a battery pack according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the lower housing of FIG. 1;

FIG. 3 is a schematic bottom view of FIG. 2;

FIG. 4 is a schematic view of a portion of the structure of FIG. 2;

FIG. 5 is a schematic diagram of the structure of the pre-charging resistor installation;

fig. 6 is a schematic view of the construction of the adapter fitting installation.

In the accompanying fig. 1-6, the reference numerals are illustrated as follows:

10-a bottom wall; 20-a side wall; 30-a connecting line; 40-a pre-charge resistor; 50-insurance; 60-a current sensor; 70-a relay; 80-a transfer joint;

1-a wiring hole; 2-routing structure, 21-routing groove; 3-a fastener; 4-mounting platform, 41-mounting point; 5-a bracket; 6-mounting grooves; 7-elastic limit piece, 71-inclined plane; 8-a through hole; 9-mounting the sheet.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 6, fig. 1 is a schematic diagram illustrating an internal structure of a BDU for a battery pack according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the lower housing of FIG. 1; FIG. 3 is a schematic bottom view of FIG. 2; FIG. 4 is a schematic view of a portion of the structure of FIG. 2; FIG. 5 is a schematic diagram of the structure of the pre-charging resistor installation; fig. 6 is a schematic view of the construction of the adapter fitting installation.

An embodiment of the utility model provides a BDU for battery package and casing thereof, wherein, as shown in fig. 1 and 5, BDU for battery package includes the casing and locates the electric elements in the casing, and wherein electric elements includes insurance 50, current sensor 60, pre-charge resistance 40 and relay 70.

Specifically, the casing includes casing and lower casing, the top and the two that go up the casing lid fit casing down enclose to close the installation cavity that forms and be used for placing each electric elements, the casing includes diapire 10 and the lateral wall 20 that sets up along the circumference of diapire 10 down, diapire 10 is equipped with walking line hole 1, and the lower terminal surface of diapire 10 is equipped with walks line structure 2 and a plurality of fastener 3, each fastener 3 sets up along the length direction interval of walking line structure 2, it is used for installing connecting wire structure 2 to walk line structure 2, connecting wire 30 is located and walks a plurality of fasteners 3 that line structure 2 set up and walk line structure 2 mating reaction through the interval, make connecting wire 30 can be fixed with diapire 10 steadily. The wiring hole 1 is connected to the mounting cavity and the wiring structure 2, and specifically, the connection line 30 is a high voltage line and a low voltage line passing through the wiring hole 1 and connected between the electrical components.

The lower end surface of the bottom wall 10 refers to an end surface of the bottom wall 10 facing the outer side of the housing, and in this document, the inside refers to the inner side of the housing, and the outside refers to the outer side of the housing. In this application, the specific structure of the card and the specific number of the card 3 can be set according to the length and width of the wiring structure 2, and no specific limitation is made here.

As shown in fig. 3, the high-voltage wires and the low-voltage wires connected between the electrical components in the casing of the BDU for battery pack are uniformly distributed outside the bottom of the casing, so that the circuit connection between the electrical components inside the casing is simplified, the occupied space of the circuit in the casing is reduced, the arrangement between the electrical components in the casing is facilitated, and the installation and the maintenance operation are facilitated. Simultaneously, with the high-voltage line between each electric elements and the low-voltage line all be not as for the casing outside, because outside is walked the line and is not received each electric elements's restriction, walk line structure 2 and can set up according to the concrete position of walking line hole 1, guarantee that connecting wire 30's length is shortest, simultaneously, still can reduce the inner space demand of this casing, and then reduce the volume of this casing, be convenient for this battery package uses BDU's overall arrangement.

In the above embodiment, the bottom wall 10 of the lower housing is provided with the mounting platforms 4 for mounting the electrical components, and each mounting platform 4 is provided with the mounting point 41 corresponding to each electrical component, specifically, as shown in fig. 2, the bottom wall 10 is provided with a plurality of mounting platforms 4, each mounting platform 4 corresponds to one electrical component, and the shape of the mounting platform 4, the number and the positions of the mounting points 41 provided on the mounting platform 4, and the like are set according to the structure of the corresponding electrical component, and are not limited in detail herein.

Meanwhile, the bottom end of the side wall 20 of the lower shell extends out of the lower surface of the bottom wall 10, and therefore the bottom of the side wall 20 supports the bottom wall 10 to a certain height after the shell is placed on the placing platform, so that an installation space is formed between the bottom wall 10 and the placing platform, and when each electric element is installed through a bolt and each installation point 41, interference on installation of the bolt cannot be caused. Meanwhile, the height of the bottom end of the side wall 20 extending out of the lower surface of the bottom wall 10 is not less than the height of the routing structure 2, that is, the height of the installation space is not less than the height of the routing structure 2, and the routing structure 2 is located in the installation space, so that abrasion between the connecting line 30 in the routing structure 2 and the placing platform is avoided.

In the above embodiment, the wiring structure 2 is the wiring groove 21 provided on the lower end face of the bottom wall 10, specifically, the connecting wire 30 is located in the wiring groove 21, and the clip 3 can limit the connecting wire 30 from the end of the notch of the wiring groove 21, so that the connecting wire 30 can be stably located in the wiring groove 21, and the connecting wire 30 is fixed to the bottom wall 10. Or, in this embodiment, can also set up line structure 2 into the line cover, and connecting wire 30 passes the line cover, and the line cover passes through fastener 3 and is fixed with diapire 10, also can realize fixing the lower terminal surface of connecting wire 30 and diapire 10, and set up line structure 2 into the scheme of trough 21 and need not to establish extra structure in addition, can simplify the manufacturing process of this lower casing.

Further, the lower end surface of the bottom wall 10 is further provided with a bracket 5, and the height of the bracket 5 is the same as the height of the bottom end of the side wall 20 extending out of the lower surface of the bottom wall 10. That is, the bracket 5 is provided in the installation space, and the height of the bracket 5 is the same as the height of the installation space, so as to support the bottom wall 10 and ensure the strength of the bottom wall 10.

Specifically, in this embodiment, the number and the position of the wire feeding holes 1 are not limited, if each electrical component separately sets the wire feeding holes 1, each electrical component is installed through the installation point 41, and each electrical component separately has one wire feeding hole 1 for feeding wires, or the number and the position of the wire feeding holes 1 can be set according to the overall arrangement condition of each electrical component, and if at least two connecting wires 30 are gathered together, the wires are passed through the same wire feeding hole 1 and placed in the wire feeding structure 2. Meanwhile, the shape and structure of the support 5 are not limited, and in this embodiment, as shown in fig. 3, the support 5 is disposed along the horizontal direction and the vertical direction of the lower surface of the bottom wall 10, so that the installation space forms independent squares, or the support 5 may be disposed as a plurality of support legs, and all the support legs are uniformly distributed on the lower surface of the bottom wall 10.

In the above embodiment, the mounting platform 4 is provided with the mounting groove 6 for mounting the pre-charging resistor 40, and the notch of the mounting groove 6 is provided with the limiting part for limiting the pre-charging resistor 40 so that the pre-charging resistor 40 is located in the mounting groove 6. Alternatively, in this embodiment, the pre-charging resistor 40 may be fixed to the mounting platform 4 by bolts and the mounting points 41. The scheme of installing and fixing the pre-charging resistor 40 through the installation groove 6 and the limiting part can simplify the installation operation and facilitate the disassembly and assembly, meanwhile, the installation of the pre-charging resistor 40 does not need to additionally arrange the installation point 41, the occupied volume of the pre-charging resistor 40 after installation can be reduced, and the space arrangement of each electric element in the shell is further facilitated. Specifically, the mounting groove 6 may be integrally formed with the bottom wall 10 of the lower housing, thereby simplifying the processing of the lower housing.

In the above embodiment, the number of the limiting portions is at least two, and the two limiting portions are arranged at intervals along the length direction of the mounting groove 6, and the arrangement of the at least two limiting portions can enable the pre-charging resistor 40 to be more stably located in the mounting groove 6. In this embodiment, the number of the limiting portions is two, or three or more limiting portions may be provided.

Further, as shown in fig. 5, each of the limiting portions includes two elastic limiting members 7 disposed at two sides of the notch of the mounting groove 6, wherein the two elastic limiting members 7 of each of the limiting portions may be aligned or staggered, and no specific limitation is made herein. The distance between the two elastic limiting members 7 of each limiting portion along the width direction of the pre-charging resistor 40 is smaller than the width of the pre-charging resistor 40, so that the pre-charging resistor 40 can be guaranteed to be limited in the mounting groove 6.

Specifically, when the pre-charging resistor 40 is installed in the installation groove 6, the pre-charging resistor 40 extrudes the elastic limiting member 7 outwards to enable the elastic limiting member 7 to expand outwards and deform, then after the pre-charging resistor 40 is located in the installation groove 6, the elastic limiting member 7 returns to the original state and limits the pre-charging resistor 40 located in the installation groove 6, if the pre-charging resistor 40 needs to be taken out, the elastic limiting member 7 needs to be manually acted outwards, and therefore the distance between the elastic limiting members 7 on the two sides is not smaller than the width of the pre-charging resistor 40.

Or, in this embodiment, can also set up spacing portion as the dead lever, the shape of this dead lever and the upper surface looks adaptation of pre-charging resistor 40, the one end of this dead lever is articulated with the terminal surface of mounting groove 6, the other end passes through the joint with the terminal surface of mounting groove 6, bolted connection etc. is fixed all can, during the installation, open the dead lever around its hinged end, place pre-charging resistor 40 in mounting groove 6 back, can restrict this pre-charging resistor 40 in mounting groove 6 with the other end of dead lever and the terminal surface of mounting groove 6 is fixed. Compared with the scheme of the fixing rod, the arrangement of the elastic limiting part 7 is more convenient for disassembly and assembly operation.

In the above embodiment, the top end of each elastic limiting member 7 is provided with an inclined surface 71, and one end of the inclined surface 71 facing the mounting groove 6 is lower than one end far away from the mounting groove 6, that is, the inclined surfaces 71 of the elastic limiting members 7 on both sides of the mounting groove 6 form guide surfaces, which facilitates the mounting of the pre-charging resistor 40.

Specifically, the specific structure of the elastic limiting member 7 is not limited, for example, the elastic limiting member 7 in the embodiment is made of plastic material and has certain elasticity, or the elastic action of the elastic limiting member 7 can be realized by a spring, and how to arrange the elastic limiting member 7 with the spring to limit the pre-charging resistor 40 in the mounting groove 6 is well known in the prior art, and is not described herein again for saving space.

In the above embodiment, as shown in fig. 4 and 6, the bottom wall 10 is further provided with the through hole 8, the wall of the through hole 8 is provided with the integrally formed mounting piece 9, the BDU for battery pack is further provided with the adapter 80, the adapter 80 is used for connecting the wire harness and the external device, and the mounting piece 9 is used for fixing the adapter 80. With the pore wall integrated into one piece of installation piece 9 and through-hole 8, can simplify the fixed operation of this installation piece 9 and casing, adapter joint 80 is equipped with the joint structure, when the installation, directly place adapter joint 80 in through-hole 8 and through the joint structure with the installation piece 9 joint fixed can, the installation operation is comparatively convenient.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The shell of the BDU for the battery pack is characterized by comprising an upper shell and a lower shell, wherein the upper shell covers the upper part of the lower shell and encloses to form a mounting cavity for mounting each electric element of the BDU for the battery pack;

the lower end face of the bottom wall (10) of the lower shell is provided with a wiring structure (2) and a plurality of clamping pieces (3) arranged at intervals along the length direction of the wiring structure (2), the wiring structure (2) is used for installing a connecting wire (30), and the clamping pieces (3) can be matched with the wiring structure (2) to fix the connecting wire (30) and the bottom wall (10);

the bottom wall (10) is provided with a wiring hole (1) communicated with the installation cavity and the wiring structure (2), and the connecting wire (30) penetrates through the wiring hole (1) and is connected with a high-voltage wire and a low-voltage wire between each electric element.

2. The housing of a BDU for a battery pack according to claim 1,

the bottom wall (10) of the lower shell is provided with a mounting platform (4) for mounting the electric element, and the mounting platform (4) is provided with a mounting point (41) corresponding to the electric element;

the bottom end of the side wall (20) of the lower shell extends out of the lower surface of the bottom wall (10), and the height of the bottom end of the side wall (20) extending out of the lower surface of the bottom wall (10) is not less than the height of the routing structure (2).

3. A BDU housing for a battery pack, as claimed in claim 2, wherein said bottom wall (10) is further provided at its lower end with a bracket (5), said bracket (5) having the same height as the bottom end of said side wall (20) protruding from the lower surface of said bottom wall (10).

4. A BDU housing for a battery pack according to any of claims 1-3, wherein the routing structure (2) is a routing groove (21) opening onto the lower end face of the bottom wall (10).

5. The BDU shell for battery pack according to claim 2 or 3, wherein the mounting platform (4) is provided with a mounting groove (6) for mounting a pre-charging resistor (40), and the notch of the mounting groove (6) is provided with a limiting part for limiting the pre-charging resistor (40) in the mounting groove (6).

6. The case of the BDU for battery pack according to claim 5, wherein the number of the position limiting portions is at least two, and the two position limiting portions are provided at intervals along a length direction of the mounting groove (6).

7. The BDU shell as recited in claim 6, wherein each of the limiting parts comprises two elastic limiting parts (7) respectively arranged at two sides of the notch correspondingly.

8. The case of the BDU for battery pack according to claim 7, wherein the top end of each elastic stopper (7) is provided with an inclined surface (71), and one end of the inclined surface (71) facing the mounting groove (6) is lower than one end thereof away from the mounting groove (6).

9. A BDU shell for battery packs as claimed in any one of the claims 1 to 3, wherein the bottom wall (10) is further provided with a through hole (8), the wall of the through hole (8) is provided with an integrally formed mounting piece (9), and the mounting piece (9) is used for being clamped and fixed with the adapter connector (80).

10. A BDU for a battery pack, comprising a housing according to any of claims 1-9 and electrical components, said electrical components being located within said housing and said electrical components comprising a fuse (50), a current sensor (60), a pre-charge resistor (40) and a relay (70).