Power battery pack

Abstract

The utility model discloses a power battery pack, which belongs to the technical field of battery packs and comprises a box cover, a battery module and a BMS (battery management system) module are arranged in the box cover, a plurality of mounting parts are arranged outside the box cover, and the mounting parts are distributed along the circumferential direction of the box cover at intervals; the number of the maintenance windows is multiple, and the maintenance windows are detachably installed on the box cover; each heating part comprises a heating piece and a heating electrode, and every two heating parts form a group and are respectively positioned on two sides of the battery module. According to the power battery pack, the heating part is arranged in the power battery pack, the area nearby the battery pack under low-temperature charging can be heated to change the low-temperature environment, so that the charging efficiency of the power battery pack is effectively improved, the power battery pack is provided with the independent maintenance window, the box cover does not need to be disassembled and assembled in the BMS module maintenance process, and the maintenance cost is reduced. Therefore, the maintenance efficiency of the BMS module is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and in particular relates to a power battery pack. Background Art

[0002] Power battery packs are the core energy source in the new energy sector. They are typically composed of multiple single cells (battery cells), connected in series and parallel to form a high-voltage, high-capacity battery assembly. They typically include several key components: cells, modules, electrical systems, thermal management systems, enclosures, and a battery management system (BMS).

[0003] The existing power battery packs have the following problems in actual use:

[0004] 1. There is no heating unit inside the battery pack, so the battery cannot be heated when charging at low temperatures, thereby failing to improve the charging efficiency of the battery pack;

[0005] 2. The BMS module does not have an independent maintenance window, and the box cover needs to be disassembled and installed during the later maintenance process, resulting in increased maintenance costs;

[0006] 3. Existing power battery packs have many inconveniences in the transportation, installation, and packaging processes, and their operating efficiency is low. Utility Model Content

[0007] The utility model overcomes the deficiencies of the prior art and provides a power battery pack to solve the problems existing in the prior art.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is: a power battery pack, comprising

[0009] A box cover, wherein a battery module and a BMS module are arranged inside the box cover, and a plurality of mounting parts are arranged outside the box cover, wherein the mounting parts are distributed at intervals along the circumference of the box cover;

[0010] Maintenance windows, the number of which is multiple and which are detachably mounted on the box cover;

[0011] The heating part includes a heating element and a heating electrode. The heating elements are arranged in groups of two and are located on both sides of the battery module. When the heating electrodes are energized, the heating elements heat the sides of the battery module.

[0012] In a preferred embodiment of the present invention, there are multiple battery modules distributed along the length of the box cover, and adjacent battery modules are connected in series.

[0013] In a preferred embodiment of the present invention, an MSD module and an output interface are provided on the outer surface of the box cover.

[0014] In a preferred embodiment of the present invention, there are two maintenance windows, one maintenance window corresponds to the position of the BMS module, and the other maintenance window corresponds to the position of the MSD module.

[0015] In a preferred embodiment of the present invention, a bottom plate is provided at the bottom of the box cover, and the bottom plate is detachably mounted on the bottom of the box cover.

[0016] In a preferred embodiment of the present invention, the mounting member includes a mounting plate and a hanging plate, the mounting plate connects the box cover to the bottom plate, and the hanging plate is installed on the box cover.

[0017] In a preferred embodiment of the present invention, the lifting plate is provided with a lifting groove for lifting the power battery pack.

[0018] In a preferred embodiment of the present invention, the heating element is a heating film, and the heating electrode includes a heating positive electrode and a heating negative electrode. After the heating positive electrode and the heating negative electrode are electrically connected to the outside, the heating element heats up to generate heat.

[0019] In a preferred embodiment of the present invention, an explosion-proof pipeline is provided on one side of the box cover. The explosion-proof pipeline is installed on the surface of the box cover through an explosion-proof valve and is communicated with the interior of the box cover.

[0020] In a preferred embodiment of the present invention, an aerosol module is provided in the box cover.

[0021] The present invention solves the defects in the background technology and has the following beneficial effects:

[0022] 1. The power battery pack of the present invention is internally provided with a heating unit, which can heat the area near the battery pack during low-temperature charging to change the low-temperature environment, thereby effectively improving the charging efficiency of the power battery pack;

[0023] 2. The power battery pack of the present invention has an independent maintenance window, which enables quick and convenient maintenance of the BMS module without removing the box cover, thereby improving the maintenance efficiency of the BMS module and reducing maintenance costs;

[0024] 3. The power battery pack of the present invention is hoisted using a hoisting plate, thereby improving the operational efficiency of the battery pack during transportation, installation, packaging, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0026] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the partial structure of a preferred embodiment of the utility model;

[0028] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0029] Figure 4 This is a structural diagram of a lifting plate in a preferred embodiment of the utility model;

[0030] In the figure: 10, box cover; 11, battery module; 12, BMS module; 13, mounting part; 131, mounting plate; 132, lifting plate; 1321, lifting slot; 14, MSD module; 15, output interface; 16, aerosol module; 20, maintenance window; 30, heating part; 31, heating element; 32, heating electrode; 40, bottom plate; 50, explosion-proof pipeline. DETAILED DESCRIPTION

[0031] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0032] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present embodiment provides a power battery pack, which is internally provided with a heating portion 30, capable of heating the area near the battery pack under low-temperature charging to change the low-temperature environment, thereby effectively improving the charging efficiency of the power battery pack, and the power battery pack has an independent maintenance window 20, which can quickly and conveniently perform maintenance on the BMS module 12. During this process, there is no need to disassemble the box cover 10, thereby improving the maintenance efficiency of the BMS module 12 and reducing maintenance costs. The power battery pack of this embodiment is hoisted using a hoisting piece 132, thereby improving the operational efficiency of the battery pack during transportation, installation, packaging, etc.

[0034] Specific combination Figures 1 to 4 As shown, the power battery pack of this embodiment includes a box cover 10, a maintenance window 20 and a heating part 30. A battery module 11 and a BMS module 12 are arranged in the box cover 10 of this embodiment, and an MSD module 14 and an output interface 15 are provided on the outer surface of the box cover 10. The battery module 11, the BMS module 12 and the MSD module 14 are necessary structures of the battery pack, and the output interface 15 can connect the battery module 11 to the outside for power output. The maintenance window 20 of this embodiment is detachably installed on the box cover 10. By opening the maintenance window 20, the BMS module 12 can be quickly and conveniently maintained. During this process, there is no need to disassemble the box cover 10, thereby improving the maintenance efficiency of the BMS module 12 and reducing maintenance costs. The heating part 30 can heat the side of the battery module 11 to solve the problem of low charging efficiency of the battery pack under low temperature conditions.

[0035] In this embodiment, there are multiple battery modules 11 distributed along the length of the box cover 10 , and adjacent battery modules 11 are connected in series.

[0036] Furthermore, a base plate 40 is provided at the bottom of the box cover 10, and the base plate 40 is detachably installed at the bottom of the box cover 10. The base plate 40 of this embodiment is a heat dissipation profile, which can meet the heat dissipation requirements of the battery pack in actual use and improve the stability of the battery pack.

[0037] Combine Figure 1 and Figure 4As shown, a plurality of mounting members 13 are provided on the outside of the box cover 10. The number of the mounting members 13 is multiple and they are spaced apart along the circumference of the box cover 10. The mounting members 13 include mounting plates 131 and hanging plates 132. The mounting plates 131 connect the box cover 10 to the base plate 40, and the hanging plates 132 are installed on the box cover 10. The mounting plates 131 and the hanging plates 132 of this embodiment are both sheet metal plates with high structural strength, which are conducive to the installation and hanging of the battery pack. Under the installation action of the mounting plates 131, the box cover 10 is stably connected to the base plate 40 to enhance the stability of the battery module 11 located in the box cover 10, and the hanging plates 132 can meet the hanging requirements of the battery pack, thereby improving the operational efficiency of the battery pack during transportation, installation, and packaging.

[0038] Specifically, the lifting piece 132 of this embodiment is provided with a lifting groove 1321 , so that the power battery pack can be lifted through the box cover 10 .

[0039] In this embodiment, an explosion-proof pipeline 50 is provided on one side of the box cover 10. The explosion-proof pipeline 50 is installed on the surface of the box cover 10 through an explosion-proof valve and is connected to the inside of the box cover 10. When a large amount of high-temperature gas or flammable gas is generated in the box cover 10, the explosion-proof pipeline 50 can discharge the gas in time to avoid dangerous situations in the box cover 10. In addition, an aerosol module 16 is provided in the box cover 10 of this embodiment to achieve further protection inside the box cover 10.

[0040] like Figure 1 As shown, the number of maintenance windows 20 in this embodiment is two, one maintenance window 20 corresponds to the position of the BMS module 12, and the other maintenance window 20 corresponds to the position of the MSD module 14. The two maintenance windows 20 are used to maintain and disassemble the BMS module 12 and the MSD module 14 respectively, thereby improving maintenance efficiency and reducing maintenance costs.

[0041] Combine Figure 2 and Figure 3 As shown, the heating portion 30 of this embodiment includes a heating element 31 and a heating electrode 32. The heating elements 30 are arranged in groups of two and are located on both sides of the battery module 11. After the heating electrodes 32 are energized, the heating element 31 heats the sides of the battery module 11. When the battery pack is charged in a low-temperature environment, the heating portion 30 heats both sides of the battery module 11 to increase the peripheral temperature of the battery module 11, thereby improving the charging efficiency of the battery pack.

[0042] In this embodiment, the heating element 31 is a heating film, and the heating electrode 32 includes a heating positive electrode and a heating negative electrode. After the heating positive electrode and the heating negative electrode are electrically connected to the outside, the heating element 31 generates heat. The heat generated will heat the surrounding area of ​​the battery module 11, so that the battery pack can be charged at a normal temperature, thereby improving the charging efficiency of the battery pack.

[0043] In actual use, the power battery pack of this embodiment is internally provided with a heating portion 30, which can heat the battery pack under low-temperature charging, increase the temperature around the battery module 11, and thus charge the battery pack at a normal temperature, effectively improving the charging efficiency of the power battery pack. In addition, the power battery pack of this embodiment has an independent maintenance window 20, which can quickly and conveniently maintain the BMS module 12 and the MSD module 14. During this process, there is no need to disassemble the box cover 10, thereby improving the maintenance efficiency of the BMS module 12 and the MSD module 14 and reducing maintenance costs. The power battery pack of this embodiment is hoisted by a hoisting piece 132, thereby improving the operational efficiency of the battery pack during transportation, installation, packaging, etc.

[0044] Although the present invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the present invention. That is, the methods, systems, or devices discussed above are all examples. Various configurations may omit, replace, or add various processes or components as appropriate. For example, in an alternative configuration, the method may be performed in an order different from that described, and / or various stages may be added, omitted, and / or combined. Moreover, the features described with respect to certain configurations may be combined in various other configurations. Different aspects and elements of the configurations may be combined in a similar manner. In addition, as technology develops, many elements are merely examples and do not limit the scope of this disclosure or the claims.

[0045] Specific details are given in the specification to provide a thorough understanding of the exemplary configurations including implementations. However, the configurations can be practiced without these specific details. For example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configurations. This description provides only example configurations and does not limit the scope, applicability, or configurations of the claims. On the contrary, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made to the functions and arrangements of the elements without departing from the spirit or scope of this disclosure.

[0046] Furthermore, although each operation may be described as a sequential process, many operations may be performed in parallel or simultaneously. Furthermore, the order of the operations may be rearranged. A process may have additional steps. Furthermore, examples of the methods may be implemented in hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments for performing the necessary tasks may be stored in a non-transitory computer-readable medium such as a storage medium, and the described tasks may be performed by a processor.

[0047] In summary, it is intended that the above detailed description be considered illustrative rather than restrictive, and it should be understood that the claims (including all equivalents) are intended to define the spirit and scope of the present invention. The above embodiments should be understood as merely illustrating the present invention and not to limit the scope of protection of the present invention. After reading the contents of the present invention, technicians can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims

1. A power battery pack, characterized in that: include A box cover (10), wherein a battery module (11) and a BMS module (12) are arranged inside the box cover (10), and a plurality of mounting members (13) are arranged outside the box cover (10), wherein the mounting members (13) are multiple and are spaced apart along the circumference of the box cover (10); Maintenance windows (20), the maintenance windows (20) are multiple in number and are detachably mounted on the box cover (10); A heating unit (30) includes a heating element (31) and a heating electrode (32). The heating elements (30) are arranged in pairs and are located on both sides of the battery module (11). When the heating electrode (32) is energized, the heating element (31) heats the side of the battery module (11).

2. A power battery pack according to claim 1, characterized in that: The battery modules (11) are multiple in number and distributed along the length direction of the box cover (10), and adjacent battery modules (11) are connected in series.

3. The power battery pack according to claim 1, characterized in that: An MSD module (14) and an output interface (15) are provided on the outer surface of the box cover (10).

4. A power battery pack according to claim 3, characterized in that: There are two maintenance windows (20), one maintenance window (20) corresponds to the position of the BMS module (12), and the other maintenance window (20) corresponds to the position of the MSD module (14).

5. The power battery pack according to claim 1, characterized in that: A bottom plate (40) is provided at the bottom of the box cover (10), and the bottom plate (40) is detachably mounted on the bottom of the box cover (10).

6. A power battery pack according to claim 5, characterized in that: The mounting member (13) comprises a mounting piece (131) and a hanging piece (132); the mounting piece (131) connects the box cover (10) to the bottom plate (40); and the hanging piece (132) is mounted on the box cover (10).

7. The power battery pack according to claim 6, characterized in that: The lifting plate (132) is provided with a lifting groove (1321) for lifting the power battery pack.

8. The power battery pack according to claim 1, characterized in that: The heating element (31) is a heating film, and the heating electrode (32) includes a heating positive electrode and a heating negative electrode. After the heating positive electrode and the heating negative electrode are electrically connected to the outside, the heating element (31) is heated to generate heat.

9. The power battery pack according to claim 1, characterized in that: An explosion-proof pipeline (50) is provided on one side of the box cover (10); the explosion-proof pipeline (50) is installed on the surface of the box cover (10) through an explosion-proof valve and is communicated with the interior of the box cover (10).

10. The power battery pack according to claim 1, characterized in that: An aerosol module (16) is provided in the box cover (10).

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