Compact battery pack

Abstract

The utility model discloses a compact battery pack, which belongs to the field of batteries and comprises an outer frame, an integrated beam and a battery module are arranged in the outer frame, the integrated beam is used as a cross beam and / or a longitudinal beam, and the battery module is arranged on the side of the integrated beam; the integrated beam is of a rectangular tubular structure, a rectangular cavity is formed in the integrated beam, and a battery management system board is arranged in the cavity; a top plate of the integrated beam is provided with a matching hole, two opposite side plates of the integrated beam are divided into a first side plate and a second side plate, the first side plate is provided with a mounting hole, the first side plate is detachably provided with a closing plate, and the closing plate covers the mounting hole; the battery management system board is fixed to the second side board, and the insertion columns of the battery management system board extend out of the matching holes. The compact battery pack has certain strength, and is simple in structure, easy to maintain and high in flexibility.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a compact battery pack. Background Technology

[0002] Currently, battery packs are demanding increasingly higher internal space utilization and higher energy density requirements. However, battery management systems (BMS) occupy a significant amount of space within the battery pack, and their casings are typically made of metal, making them quite heavy. The battery system design must allocate dedicated space for the BMS, limiting the overall space utilization of the battery pack. Furthermore, the additional casing and mounting brackets of the BMS increase the overall weight of the pack, reducing the system's energy density.

[0003] For example, Chinese patent document (publication number: CN 208585211 U) provides a longitudinal beam and a lower housing assembly for a battery pack. The longitudinal beam of the assembly is adapted to separate the battery module mounting space in the lower housing of the battery pack from left to right. A circuit board mounting space is formed on the longitudinal beam. The circuit board mounting space is spaced apart from the battery module mounting spaces on both sides of the longitudinal beam. The longitudinal beam is provided with longitudinal beam connecting holes that connect the circuit board mounting space and the battery module mounting space.

[0004] To a certain extent, the longitudinal beam circuit board of this component is integrated into the installation space, saving space. However, it has high requirements for the structural compatibility of the battery module, is complex in structure, and cannot be flexibly applied to other types of battery modules. When the circuit board fails, it is also difficult for maintenance personnel to replace the circuit board quickly.

[0005] The relevant technologies do not provide effective solutions to the above problems. Utility Model Content

[0006] To address the issue of efficient internal space utilization in battery packs in related technologies, some embodiments of this application provide a compact battery pack, including an outer frame. An integrated beam and a battery module are disposed within the outer frame. The integrated beam serves as a crossbeam and / or longitudinal beam, and the battery module is disposed to the side of the integrated beam. The integrated beam is a rectangular tubular structure with a rectangular cavity inside, within which a battery management system board is disposed. A mating hole is provided on the top plate of the integrated beam. Two opposing side plates of the integrated beam are divided into a first side plate and a second side plate. The first side plate has a mounting hole, and a sealing plate is detachably mounted on the first side plate, covering the mounting hole. The battery management system board is fixed to the second side plate, and the insertion pins of the battery management system board extend from the mating hole.

[0007] Furthermore, the cavity is provided with a plurality of battery management system boards; the top plate of the integrated beam is provided with a plurality of mating holes along the length direction; the first side plate is provided with a plurality of mounting holes along the length direction; the number of battery management system boards, mating holes and mounting holes are corresponding.

[0008] Furthermore, the sealing plate extends along the length of the integrated beam, and all the mounting holes are covered by a single sealing plate.

[0009] Furthermore, the integrated beam is integrally formed, the mounting holes are cut and formed, and the battery management system board can enter the integrated beam through the mounting holes.

[0010] Furthermore, the battery management system board is detachably connected to the second side panel.

[0011] Furthermore, the cavity is filled with a lightweight filler.

[0012] Furthermore, the integrated beam serves as a crossbeam.

[0013] Furthermore, the integrated beam serves as a longitudinal beam.

[0014] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0015] (1) The battery management system board is integrated into the integrated beam through the mounting hole and is sealed by the sealing plate, so that the integrated beam effectively protects the battery management system board. When the user needs to repair or replace the battery management system board, the side sealing plate can be removed and the battery management system board can be taken out directly. The structure is simple and easy to maintain. At the same time, the battery management system board is directly connected to the battery module through the mating hole at the top of the integrated beam without taking up side space. This design can be adapted to various types of battery modules and has high flexibility.

[0016] (2) The sealing plate extends along the length of the integrated beam, and all mounting holes are covered by a sealing plate. The sealing plate can also enhance the strength of the integrated beam and make the assembly of the battery management system board more convenient.

[0017] (3) The integrated beam is integrally formed, for example, by extrusion molding or casting. The mounting holes are cut and formed. The manufacturer can cut appropriate mounting hole sizes according to different battery management system board sizes, and the battery management system board can enter the integrated beam through the mounting holes. The integrated beam of this solution avoids the use of sheet metal splicing structure to prevent uneven stress on the integrated beam when facing a collision. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0019] Figure 1 This is a schematic diagram of a compact battery pack structure according to an embodiment of this application;

[0020] Figure 2 This is an exploded view of the integrated beam structure of a compact battery pack according to an embodiment of this application.

[0021] Label Explanation:

[0022] 100. Outer frame;

[0023] 200. Battery module;

[0024] 300, Integrated beam; 310, Top plate; 311, Mating hole; 320, First side plate; 321, Mounting hole; 330, Second side plate;

[0025] 400. Battery Management System Board; 410. Connector Post;

[0026] 500. Enclosed panel. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0029] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0030] like Figure 1 , 2 As shown, this application provides a compact battery pack, which includes an outer frame 100, an integrated beam 300 and a battery module 200 disposed within the outer frame 100, the integrated beam 300 serving as a crossbeam and / or a longitudinal beam, and the battery module 200 disposed on the side of the integrated beam 300.

[0031] Optionally, the integrated beam 300 can be welded to the outer frame 100 or detachably installed in the outer frame 100. For example, the integrated beam 300 can be snapped, plugged in, screwed or bolted to the outer frame 100.

[0032] Optionally, the battery pack can have various configurations of crossbeams and longitudinal beams. For example, the battery pack can have only one crossbeam (see reference). Figure 1 The battery pack may have multiple crossbeams, or multiple crossbeams or longitudinal beams, etc., to improve the overall rigidity and impact resistance of the battery pack. This application does not impose any restrictions on these aspects.

[0033] Among them, such as Figure 2 As shown, the integrated beam 300 is a rectangular tubular structure with a rectangular cavity inside, and the battery management system board 400 is installed inside the cavity.

[0034] like Figure 2 As shown, the top plate 310 of the integrated beam 300 is provided with a mating hole 311. The two opposite side plates of the integrated beam 300 are divided into a first side plate 320 and a second side plate 330. The first side plate 320 is provided with a mounting hole 321. A sealing plate 500 is detachably installed on the first side plate 320, and the sealing plate 500 covers the mounting hole 321. The battery management system board 400 is fixed to the second side plate 330. The plug post 410 of the battery management system board 400 extends from the mating hole 311 and is connected to the wires of the battery module 200.

[0035] Therefore, as Figure 2As shown, the battery management system board 400 is integrated into the integrated beam 300 through the mounting hole 321 and is sealed by the sealing plate 500, which effectively protects the battery management system board 400. When the user needs to repair or replace the battery management system board 400, the side sealing plate 500 can be removed and the battery management system board 400 can be taken out directly. The structure is simple and easy to maintain. At the same time, the battery management system board 400 is directly connected to the battery module 200 through the mating hole 311 on the top of the integrated beam 300 without occupying the side space. This design can be adapted to various types of battery modules 200 and has high flexibility.

[0036] Specifically, such as Figure 2 As shown, a plurality of battery management system boards 400 are disposed within the cavity. The top plate 310 of the integrated beam 300 has a plurality of mating holes 311 along its length. The first side plate 320 has a plurality of mounting holes 321 along its length. The number of battery management system boards 400, mating holes 311, and mounting holes 321 corresponds accordingly. The term "a plurality of" refers to two or more units to accommodate larger battery packs, such as a battery pack containing multiple battery modules 200.

[0037] As an optional solution, each mounting hole 321 is provided with a corresponding sealing plate 500, which can be embedded in the mounting beam.

[0038] Preferred, such as Figure 2 As shown, the sealing plate 500 extends along the length of the integrated beam 300, and all mounting holes 321 are covered by a sealing plate 500. The sealing plate 500 can also enhance the strength of the integrated beam 300 and make the assembly of the battery management system board 400 more convenient.

[0039] Specifically, the enclosure plate 500 is fixed to the first side plate 320 by bolt fasteners.

[0040] Optionally, the integrated beam 300 is composed of several plates spliced ​​together.

[0041] As a preferred solution, the integrated beam 300 is integrally formed, such as by extrusion molding or casting, while the mounting holes 321 are cut to size. The manufacturer can cut appropriate mounting hole sizes 321 according to different battery management system board 400 dimensions, allowing the battery management system board 400 to enter the integrated beam 300 through the mounting holes 321. This solution avoids the use of sheet metal splicing structures for the integrated beam 300, preventing uneven stress distribution during collisions.

[0042] Specifically, the battery management system board 400 is detachably connected to the second side panel 330, for example, by bolts or screws, for easy assembly and disassembly.

[0043] Optionally, the cavity of the integrated beam 300 is filled with a lightweight filler, such as foam, pearl cotton, or expanding foam, to protect the battery management system board 400 and enhance the vibration resistance of the integrated beam 300.

[0044] Preferably, the cavity of the integrated beam 300 is filled with expanding foam to effectively protect the battery management system board 400 and enhance its flame retardancy and temperature resistance. Specifically, the porous structure formed after the expanding foam cures can tightly fill the internal gaps of the integrated beam 300, thereby improving the overall structural rigidity and reducing vibration transmission. The expanding foam can also isolate the temperature transmitted from the battery module 200 to a certain extent, preventing the components on the battery management system board 400 from failing due to temperature.

[0045] Preferably, the integrated beam 300 is used as a crossbeam or a longitudinal beam. Compared with a structure in which both the crossbeam and the longitudinal beam are constructed as integrated beams 300, this design is simpler and has a lower manufacturing cost.

[0046] In this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compact battery pack, characterized in that: The device includes an outer frame, within which an integrated beam and a battery module are disposed. The integrated beam serves as a crossbeam and / or a longitudinal beam, and the battery module is disposed to the side of the integrated beam. The integrated beam is a rectangular tubular structure with a rectangular cavity inside, and a battery management system board is installed inside the cavity. The top plate of the integrated beam is provided with a mating hole. The two opposite side plates of the integrated beam are divided into a first side plate and a second side plate. The first side plate is provided with a mounting hole. A sealing plate is detachably installed on the first side plate, and the sealing plate covers the mounting hole. The battery management system board is fixed to the second side plate, and the plug-in post of the battery management system board extends out from the mating hole.

2. The compact battery pack according to claim 1, characterized in that: The cavity is provided with a plurality of battery management system boards; the top plate of the integrated beam is provided with a plurality of mating holes along the length direction; the first side plate is provided with a plurality of mounting holes along the length direction; the number of battery management system boards, mating holes and mounting holes are corresponding.

3. The compact battery pack according to claim 2, characterized in that: The sealing plate extends along the length of the integrated beam, and all the mounting holes are covered by one of the sealing plates.

4. The compact battery pack according to claim 1, characterized in that: The integrated beam is integrally formed, and the mounting holes are cut and formed so that the battery management system board can enter the integrated beam through the mounting holes.

5. The compact battery pack according to claim 1, characterized in that: The battery management system board is detachably connected to the second side panel.

6. The compact battery pack according to claim 1, characterized in that: The cavity is filled with a lightweight filler.

7. The compact battery pack according to any one of claims 1-6, characterized in that: The integrated beam serves as a crossbeam.

8. The compact battery pack according to any one of claims 1-6, characterized in that: The integrated beam serves as a longitudinal beam.

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