Electrical cabin structure and battery box thereof

Abstract

The utility model discloses an electrical cabin structure and a battery box thereof, the electrical cabin structure comprises a plurality of crossbeams which are arranged in parallel at intervals along the width direction of an electrical cabin, the crossbeams are provided with electrical structure supports used for installing BDU modules, and a liquid cooling plate is arranged below the crossbeams. The mounting surface of the electrical structure support is perpendicular to the plane where the liquid cooling plate is located, the bottom end of the electrical bin is provided with a maintenance port facilitating maintenance of the BDU module, and the maintenance port is provided with a sealing assembly used for sealing the maintenance port. According to the utility model, on one hand, the installation surface of the electrical structure support is arranged perpendicular to the plane where the liquid cooling plate is located, so that condensed water is prevented from being formed on the surface of the BDU module to affect the service life of the BDU module; and on the other hand, the bottom end of the electrical cabin is provided with the maintenance port convenient for maintaining the BDU module, and the maintenance area of the maintenance port of the side BDU module structure is smaller than that of a traditional maintenance port, so that the processing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack structure technical field, concretely relates to an electrical bin structure and battery box thereof. BACKGROUND

[0002] The BDU (Battery Disconnect Unit, BDU) module, also known as a battery disconnect unit, is located inside a battery pack and is a working unit for high-voltage distribution, disconnection, and short-circuit protection of a battery system. The existing BDU module is horizontally arranged on a liquid cooling plate at the bottom of an electrical bin. In the case of high-rate power generation of the battery, the heat dissipation speed of the BDU module is slow, which easily causes condensate to form on the surface of the BDU module during the working process of the battery pack, thereby causing the BDU module to be in a humid environment for a long time and affecting the service life of the BDU module. In addition, when the BDU module needs to be repaired, only the whole battery pack can be removed, which will cause huge labor costs and repair costs.

[0003] Therefore, there is an urgent need to propose a new solution to solve the above problems. SUMMARY

[0004] The utility model provides an electrical bin structure and battery box thereof, can solve existing battery pack in working process, easily form condensate on the surface of BDU module, thereby causing BDU module to be in humid environment for a long time, influence BDU module's service life, in addition, when needing to repair BDU module, only the whole battery pack can be removed, this will cause huge labor costs and repair cost problem.

[0005] The utility model provides an electrical bin structure, including the beam that a plurality of parallel interval settings along the width direction of electrical bin, the electrical structure support for installing BDU module is arranged on the beam, the liquid cooling plate is arranged below the beam, the mounting surface of electrical structure support and the plane of liquid cooling plate are perpendicular arrangement, the bottom of electrical bin is equipped with the maintenance opening of being convenient for maintaining BDU module, the sealing assembly for sealing maintenance opening is arranged to the maintenance opening.

[0006] Further, the electrical structure support is detachably arranged above a single beam by a plurality of bolt fasteners.

[0007] Further, the electrical structure support includes a main body portion, and first and second bent portions arranged on upper and lower sides of the main body portion by bending, the first and second bent portions are arranged by bending away from the side of the BDU module, the first bent portion is provided with a mounting hole for mounting a cable tie mounting seat, and the second bent portion detachably arranges the electrical structure support on the beam by a plurality of bolt fasteners.

[0008] Further, the main body part is spaced apart from the corners of the first and second bending parts and is provided with a plurality of reinforcing ribs protruding away from the BDU module.

[0009] Further, the main body part, the first and second bending parts and the reinforcing ribs are integrally formed.

[0010] Further, the sealing assembly comprises a maintenance sealing plate and a sealing gasket between the maintenance sealing plate and the liquid cooling plate.

[0011] Further, the maintenance sealing plate is detachably arranged on the lower surface of the liquid cooling plate through a plurality of bolt fasteners.

[0012] Further, the upper surface of the liquid cooling plate is provided with a second cooling liquid inlet and a second cooling liquid outlet, the side end of the electrical compartment is provided with a first cooling liquid inlet and a first cooling liquid outlet, the first cooling liquid inlet and the second cooling liquid inlet are communicated through an inlet pipe, and the first cooling liquid outlet and the second cooling liquid outlet are communicated through an outlet pipe.

[0013] The utility model also provides a battery box comprising the above-mentioned electrical compartment structure.

[0014] Compared with the prior art, the utility model avoids the formation of condensate on the surface of the BDU module and affects the service life of the BDU module by arranging the mounting surface of the electrical structure support perpendicularly to the plane of the liquid cooling plate, and on the other hand, the utility model opens a maintenance opening at the bottom end of the electrical compartment for the maintenance of the BDU module, and the maintenance opening of the side-mounted BDU module structure is smaller than the maintenance opening of the traditional maintenance opening, thereby reducing the processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a schematic view of the overall structure of the battery box of the utility model;

[0016] Figure 2 Fig. 2 is a schematic view of the structure of the battery box of the utility model without the liquid cooling plate;

[0017] Figure 3 Fig. 3 is a schematic view of the structure of the electrical structure support of the utility model;

[0018] Figure 4 Fig. 4 is a schematic view of the structure of the BDU module and the electrical structure support of the utility model;

[0019] Figure 5 Fig. 5 is a schematic view of the structure of the liquid cooling plate of the utility model;

[0020] Reference numerals: 1. Electrical compartment; 11. First coolant inlet; 12. First coolant outlet; 2. Crossbeam; 3. Liquid cooling plate; 31. Maintenance port; 32. Second coolant inlet; 33. Second coolant outlet; 4. BDU module; 41. Electrical mounting plate; 42. Main fuse; 43. Heating fuse; 44. Shunt; 45. Pre-charge resistor; 46. Relay; 47. Cable tie mounting base; 5. Electrical structure bracket; 51. Main body; 52. First bend; 521. Cable tie mounting hole; 53. Second bend; 531. Threaded hole; 54. Reinforcing rib; 6. Sealing assembly; 61. Maintenance sealing plate; 62. Sealing gasket. Detailed Implementation

[0021] To further understand the utility model's content, features, and effects, the following embodiments are provided, along with accompanying drawings. Figures 1-5 The details are as follows.

[0022] In this embodiment, as Figures 1-5 As shown, this utility model provides an electrical compartment structure, which is installed in a battery box. It includes four horizontal beams 2 arranged parallel to each other along the width of the electrical compartment 1. The number of beams can be selected according to actual needs. Electrical structural supports 5 for mounting BDU modules 4 are provided on the horizontal beams 2. A liquid cooling plate 3 is installed below the horizontal beams 2. The mounting surface of the electrical structural supports 5 is perpendicular to the plane of the liquid cooling plate 3. A maintenance port 31 is provided at the bottom of the electrical compartment 1 to facilitate maintenance of the BDU modules 4. The maintenance port 31 is equipped with a sealing component 6 for sealing the maintenance port 31. The horizontal beams 2 not only serve as fixing beams for the side-mounted electrical structural supports 5, but also as reinforcing beams for the battery pack, increasing the structural strength of the entire battery box. A protective plate for protecting the battery box is detachably installed below the liquid cooling plate 3. During maintenance, the protective plate is removed first, followed by the sealing component 6 at the maintenance port 31.

[0023] This invention, on the one hand, avoids the formation of condensation on the surface of the BDU module and affects its service life by arranging the mounting surface of the electrical structure bracket perpendicular to the plane of the liquid cooling plate; on the other hand, it provides a maintenance port at the bottom of the electrical compartment for easy maintenance of the BDU module, and the maintenance port of the side-mounted BDU module structure has a smaller maintenance area than the traditional maintenance port, thus reducing processing costs.

[0024] In this embodiment, as Figure 2 and 3 As shown, the electrical structure bracket 5 is detachably mounted above the single crossbeam 2 by a plurality of bolt fasteners, wherein the electrical structure bracket 5 has a plurality of threaded holes 531 through which the bolt fasteners pass.

[0025] In this embodiment, as Figure 3and 4 As shown in the figure, the electrical structure support 5 includes a main body part 51, and a first bending part 52 and a second bending part 53 respectively arranged on the upper and lower sides of the main body part 51 in the form of bending, wherein the first bending part 52 and the second bending part 53 are arranged in a bent manner towards the side away from the BDU module 4, the first bending part 52 is provided with a mounting hole 521 for mounting the cable tie mounting seat 47, and the second bending part 53 is detachably arranged on the cross beam 2 through a plurality of bolt fasteners. The electrical structure support 5 as a whole is in a U-shaped frame structure.

[0026] In this embodiment, as shown in the figure, Figures 1-5 The corners of the main body part 51 and the first bending part 52 and the second bending part 53 are all spaced apart and provided with a plurality of reinforcing ribs 54 protruding away from the side of the BDU module 4, which plays a role of structural reinforcement.

[0027] In this embodiment, as shown in the figure, Figure 4 The BDU module 4 includes an electrical fixing plate 41, wherein the electrical fixing plate 41 is fixed on the electrical structure support 5 through a plurality of bolts, and the electrical fixing plate 41 is provided with a main fuse 41, a heating fuse 43, a shunt 44, a pre-charge resistor 45 and a plurality of relays 46. The plurality of relays 46 can change with the position of the battery module, which increases the flexibility and versatility of the BDU module 4.

[0028] In this embodiment, the above-mentioned main body part 51, first bending part 52, second bending part 53 and reinforcing rib 54 are manufactured in an integrated molding manner, which is convenient for processing.

[0029] In this embodiment, as shown in the figure, Figure 5 The sealing assembly 6 includes a maintenance sealing plate 61 and a sealing washer 62 located between the maintenance sealing plate 61 and the liquid cooling plate 3. The maintenance sealing plate 61 is detachably arranged on the lower surface of the liquid cooling plate 3 through a plurality of bolts. In addition, the maintenance sealing plate 61 is flush with the bottom of the battery box, so as to reduce the overall height of the entire battery box.

[0030] In this embodiment, as shown in the figure, Figure 1 , 2 As shown in the figures 4, 5, the upper surface of the liquid cooling plate 3 is provided with a second cooling liquid inlet 32 and a second cooling liquid outlet 33, and the second cooling liquid inlet 32 and the second cooling liquid outlet 33 are respectively located on the left and right sides of the maintenance port 31. The side end of the electrical compartment 1 is provided with a first cooling liquid inlet 11 and a first cooling liquid outlet 12. The first cooling liquid inlet 11 and the second cooling liquid inlet 32 are communicated through an inlet pipe (not shown in the figure), and the first cooling liquid outlet 12 and the second cooling liquid outlet 33 are communicated through an outlet pipe (not shown in the figure). By arranging the liquid cooling plate 3 in the area of the electrical compartment 1, the heat dissipation speed of the BDU module 4 is accelerated.

[0031] The above-mentioned practical new type of the present application only expresses the implementation manners of the embodiments of the present application, and therefore cannot be understood as the limitation of the scope of the practical new type patent, nor any form of limitation on the structure of the embodiments of the present application. It should be pointed out that, for ordinary skilled persons in the art, some changes and improvements can be made without departing from the concept of the embodiments of the present application, and these all belong to the protection scope of the embodiments of the present application.

Claims

1. An electrical bin structure, characterized by, The electric bin (1) comprises a plurality of beams (2) arranged in parallel along the width direction of the electric bin (1), the beams (2) are provided with an electrical structure support (5) for mounting a BDU module (4), a liquid cooling plate (3) is arranged below the beams (2), the mounting surface of the electrical structure support (5) is arranged vertically to the plane where the liquid cooling plate (3) is located, a maintenance opening (31) is arranged at the bottom end of the electric bin (1) to facilitate maintenance of the BDU module (4), and the maintenance opening (31) is provided with a sealing assembly (6) for sealing the maintenance opening (31).

2. An electrical compartment structure according to claim 1, characterized in that: The electrical structure support (5) is detachably arranged above a single beam (2) through a plurality of bolt fasteners.

3. An electrical compartment structure according to claim 1, characterized in that: The electrical structure support (5) comprises a main body portion (51), and a first bending portion (52) and a second bending portion (53) arranged on the upper and lower sides of the main body portion (51) in a bending form, respectively, the first bending portion (52) and the second bending portion (53) are arranged in a bending form towards the side away from the BDU module (4), the first bending portion (52) is provided with a mounting hole (521) for mounting a cable tie mounting seat (47), and the second bending portion (53) detachably arranges the electrical structure support (5) on the beam (2) through a plurality of bolt fasteners.

4. An electrical compartment structure according to claim 3, characterized in that: A plurality of reinforcing ribs (54) protruding towards the side away from the BDU module (4) are arranged at the corners of the main body portion (51), the first bending portion (52) and the second bending portion (53).

5. An electrical compartment structure according to claim 4, characterized in that: The main body portion (51), the first bending portion (52), the second bending portion (53) and the reinforcing ribs (54) are manufactured in an integrated forming manner.

6. An electrical compartment structure according to claim 1, characterized in that: The sealing assembly (6) comprises a maintenance sealing plate (61) and a sealing gasket (62) between the maintenance sealing plate (61) and the liquid cooling plate (3).

7. An electrical compartment structure according to claim 6, characterized in that: The maintenance sealing plate (61) is detachably arranged on the lower surface of the liquid cooling plate (3) through a plurality of bolt fasteners.

8. An electrical compartment structure according to claim 1, wherein: The upper surface of the liquid cooling plate (3) is provided with a second cooling liquid inlet (32) and a second cooling liquid outlet (33), the side end of the electric bin (1) is provided with a first cooling liquid inlet (11) and a first cooling liquid outlet (12), the first cooling liquid inlet (11) and the second cooling liquid inlet (32) are communicated through an inlet pipe, and the first cooling liquid outlet (12) and the second cooling liquid outlet (33) are communicated through an outlet pipe.

9. A battery box characterized by: The electric bin structure comprises the electric bin structure according to any one of claims 1-8.

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