Detachable BDU battery pack structure

Abstract

The utility model relates to the technical field of power batteries, in particular to a detachable BDU battery pack structure which comprises a battery pack and a BDU structure, an electrical bin of the battery pack is provided with an opening, and the BDU structure is arranged in the opening; a telescopic lap joint aluminum sheet is arranged in the opening in the BDU insertion direction, and a plurality of installation grooves are formed in the side wall and the bottom of the electrical bin. The BDU structure comprises a plurality of telescopic fixing points arranged on the side face and the bottom of the BDU, and the telescopic fixing points are matched with the installation grooves. The BDU is an independent detachable module, and when the BDU breaks down or the battery pack system breaks down, the BDU or the battery pack system can be checked, maintained and replaced independently. The detachable BDU is integrated with a charging port and a discharging port, so that the arrangement in a battery pack is facilitated, and the use of copper and aluminum bars is reduced. The BDU not only has all functions of a common BDU, but also has the characteristics of sealing and easiness in maintenance. The BDU has the advantages of low later maintenance cost, excellent performance and complete functions, and can solve the technical problem that the BDU in the prior art is not easy to disassemble when having a fault.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a detachable BDU battery pack structure. Background Technology

[0002] A BDU, or Battery Disconnect Unit, is a safety system component used in electric or hybrid vehicles. Its primary function is to quickly disconnect the battery from the vehicle in the event of a collision, preventing short circuits or overheating that could lead to more serious safety issues.

[0003] In existing technologies, the Battery Duct Integrated Circuit (BDU) is typically integrated into the electrical compartment of the battery pack and connected as a single unit. Because the fuses in the BDU are most prone to failure, when a BDU malfunctions, the battery cover needs to be removed, increasing the difficulty and cost of maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a detachable BDU battery pack structure that can solve the technical problem that the BDU is not easy to disassemble when it malfunctions in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a detachable BDU battery pack structure, including a battery pack and a BDU structure. The electrical compartment of the battery pack has an opening, and the BDU structure is disposed in the opening.

[0007] The opening is provided with a retractable overlapping aluminum sheet along the BDU insertion direction, and the side wall and bottom of the electrical compartment are provided with multiple mounting grooves;

[0008] The BDU structure includes multiple retractable fixing points located on the sides and bottom of the BDU, which mate with mounting grooves.

[0009] As a preferred embodiment, the retractable fixing point is hemispherical.

[0010] As a preferred embodiment, the BDU structure further includes a buffer lap copper sheet disposed on the side of the BDU along the BDU insertion direction, the buffer lap copper sheet cooperating with a retractable lap aluminum sheet.

[0011] Furthermore, the BDU has a side groove on its side, and the buffer overlapping copper sheet is disposed in the side groove.

[0012] As a preferred embodiment, the BDU structure further includes two rotating pull rings, which are respectively disposed on both sides of the front end of the BDU.

[0013] As a preferred embodiment, the BDU structure further includes a charging port and a discharging port, which are respectively located at the middle of the front end of the BDU.

[0014] As a preferred embodiment, the BDU structure further includes a low-voltage communication interface and a high-voltage control interface, which are respectively located in the middle of the rear end of the BDU.

[0015] Furthermore, the electrical compartment is equipped with low-voltage communication connectors and high-voltage control connectors, which are respectively matched with low-voltage communication interfaces and high-voltage control interfaces.

[0016] As a preferred embodiment, the detachable BDU battery pack structure also includes a sealing ring, which is disposed inside the opening of the electrical compartment and engages with the side of the BDU structure.

[0017] The beneficial effects of this utility model are:

[0018] This invention provides a detachable BDU battery pack structure, which can solve the technical problem that the BDU is not easy to disassemble when it malfunctions in the prior art.

[0019] Low maintenance costs: The BDU is a separate, detachable module. When the BDU or the battery pack system malfunctions, it can be inspected, repaired, or replaced individually without disassembling the pack.

[0020] Superior performance: The detachable BDU integrates the charging port and the discharging port, making it easier to arrange the battery pack and reducing the use of copper and aluminum busbars.

[0021] Full-featured: It not only has all the functions of a regular BDU, but also features sealing and easy maintenance. Attached Figure Description

[0022] Figure 1 This is a front view of the BDU structure of this utility model.

[0023] Figure 2 This is a rear view of the BDU structure of this utility model.

[0024] Figure 3 This is a side view of the BDU structure of this utility model.

[0025] Figure 4 This is a partial front view of the electrical compartment of the battery pack of this utility model.

[0026] Figure 5 A partial front view of the battery pack after the BDU structure has been installed.

[0027] Figure 6 Partial rear view of the battery pack after the BDU structure has been installed.

[0028] Explanation of reference numerals in the attached figures:

[0029] BDU Structure 1: Side groove 11, buffer overlap copper sheet 12, fixing point 13, charging port 14, discharging port 15, low voltage communication interface 16, high voltage control interface 17, rotating pull ring 18;

[0030] Battery pack 2: opening 21, retractable overlapping aluminum sheet 22, low-voltage communication connector 23, high-voltage control connector 24, sealing ring 25. Detailed Implementation

[0031] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] This utility model relates to a detachable BDU battery pack structure, which can solve the problem of difficult BDU disassembly and maintenance, facilitate the individual replacement and maintenance of BDU, and greatly reduce the difficulty of BDU maintenance.

[0035] This utility model provides a detachable BDU battery pack structure, including a battery pack 2, a BDU structure 1, and a sealing ring 25. The electrical compartment of the battery pack has an opening 21, and the BDU structure 1 is disposed within the opening 21. The sealing ring 25 is disposed within the opening 21 of the electrical compartment and engages with the side of the BDU structure 1. A retractable overlapping aluminum sheet 22 is provided within the opening 21 along the BDU insertion direction, and multiple mounting grooves are provided on the side wall and bottom of the electrical compartment.

[0036] The BDU structure 1 includes multiple retractable fixing points 13 disposed on the side and bottom of the BDU, the retractable fixing points 13 cooperating with mounting grooves. The retractable fixing points 13 are hemispherical, and the mounting grooves are hemispherical grooves.

[0037] The BDU structure 1 also includes a buffer overlapping copper sheet 12 disposed on the side of the BDU along the insertion direction of the BDU, the buffer overlapping copper sheet 12 cooperating with a retractable overlapping aluminum sheet 22. The side of the BDU is provided with a side groove 11, and the buffer overlapping copper sheet 12 is disposed in the side groove 11.

[0038] The BDU structure 1 also includes two rotating pull rings 18, which are respectively disposed on both sides of the front end of the BDU.

[0039] The BDU structure 1 also includes a charging port 14 and a discharging port 15, which are respectively located at the middle of the front end of the BDU.

[0040] The BDU structure 1 also includes a low-voltage communication interface 16 and a high-voltage control interface 17, which are respectively located in the middle of the rear end of the BDU. The electrical compartment is equipped with a low-voltage communication connector 23 and a high-voltage control connector 24, which are matched with the low-voltage communication interface 16 and the high-voltage control interface 17, respectively.

[0041] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] This utility model has an opening at the front of the electrical compartment of the battery pack, and the BDU is arranged in the opening to facilitate the insertion and removal of the BDU.

[0043] BDU structure as follows Figures 1 to 3As shown, the BDU has side grooves on both sides corresponding to the retractable overlapping aluminum plates of the electrical compartment blades. Inside these grooves are two layers of buffer overlapping copper plates, forming an overlap area of ​​12mm in length and 18mm in width or more. This ensures the BDU's effective overlap area and filtration capacity, meeting the requirements of the battery pack. The BDU has four fixing points on both sides and at the bottom. These fixing points are hemispherical protrusions that are retractable. Corresponding hemispherical mounting grooves inside the electrical compartment facilitate insertion into these fixing points, securing the BDU when inserted into the corresponding position. Due to its hemispherical structure, it can be easily inserted or removed when sufficient insertion or removal force is applied.

[0044] The BDU front end integrates charging and discharging ports, while the low-voltage communication interface and high-voltage control interface are located at the rear end of the BDU, allowing access when the BDU is inserted into the electrical compartment. Two rotating pull rings are designed on both sides of the BDU front end. When the BDU needs maintenance, these rings can be rotated 90° forward and pulled out. After insertion, they can be rotated to a horizontal position with the front end, without occupying external space. Both the BDU front end and the electrical compartment front end are sealed with rubber sealing rings to ensure airtightness within the package.

[0045] Battery pack structure as follows Figures 4 to 6 As shown, retractable overlapping aluminum plates, in blade style, are designed on both sides of the opening of the battery pack's electrical compartment. These plates connect to the positive (B+) and negative (B-) terminals of the battery distribution unit (BDU), respectively. The positive (B+) and negative (B-) terminals of the BDU are then connected to the positive and negative terminals of the battery module, respectively. These retractable overlapping aluminum plates on both sides of the battery pack's electrical compartment are supported by a spring structure, allowing for lateral displacement and providing strong cushioning and absorption capabilities. This ensures that the BDU is not damaged during insertion. Furthermore, the spring support allows for a tight connection with the buffered overlapping copper plates within the side grooves of the BDU, ensuring normal operation even under vibration and impact.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A removable BDU battery pack structure, characterized by: It includes a battery pack (2) and a BDU structure (1), wherein the electrical compartment of the battery pack is provided with an opening (21), and the BDU structure (1) is disposed in the opening (21); The opening (21) is provided with a retractable overlapping aluminum sheet (22) along the BDU insertion direction, and the side wall and bottom of the electrical compartment are provided with multiple mounting grooves; The BDU structure (1) includes a plurality of retractable fixing points (13) provided on the side and bottom of the BDU, the retractable fixing points (13) cooperating with the mounting grooves.

2. A detachable BDU battery pack structure according to claim 1, characterized in that: The retractable fixing point (13) is hemispherical, and the mounting groove is a hemispherical groove.

3. The detachable BDU battery pack structure of claim 1, wherein: The BDU structure (1) also includes a buffer overlapping copper sheet (12) disposed on the side of the BDU along the BDU insertion direction, the buffer overlapping copper sheet (12) cooperating with a retractable overlapping aluminum sheet (22).

4. The detachable BDU battery pack structure of claim 3, wherein: The BDU has a side groove (11) on its side, and the buffer overlapping copper sheet (12) is disposed in the side groove (11).

5. The detachable BDU battery pack structure of claim 1, wherein: The BDU structure (1) also includes two rotating pull rings (18), which are respectively disposed on both sides of the front end of the BDU.

6. The detachable BDU battery pack structure of claim 1, wherein: The BDU structure (1) also includes a charging port (14) and a discharging port (15), which are respectively located at the middle of the front end of the BDU.

7. The detachable BDU battery pack structure of claim 1, wherein: The BDU structure (1) also includes a low-voltage communication interface (16) and a high-voltage control interface (17), which are respectively located in the middle of the back end of the BDU.

8. The detachable BDU battery pack structure of claim 7, wherein: The electrical compartment is equipped with a low-voltage communication connector (23) and a high-voltage control connector (24), which are matched with the low-voltage communication interface (16) and the high-voltage control interface (17), respectively.

9. A detachable BDU battery pack structure according to any one of claims 1 to 8, characterized in that: The detachable BDU battery pack structure also includes a sealing ring (25), which is disposed inside the opening (21) of the electrical compartment and cooperates with the side of the BDU structure (1).

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