Battery pack box body, battery pack and electric equipment

Abstract

The embodiment of the invention provides a battery pack box body, a battery pack and electric equipment, and relates to the technical field of battery packs, the battery pack box body comprises a box body and at least one connecting row, a mounting cavity is formed in the box body, and the mounting cavity is at least used for mounting a power distribution device and / or at least one battery assembly. One part of the connecting bar is embedded in the box body, and the other part of the connecting bar extends to the mounting cavity and is used for being connected with a power distribution device or a battery assembly. According to the battery pack box provided by the embodiment of the invention, the box body is used for covering the connecting row, so that the exposed part is reduced, and the opportunity of influencing the connecting row by environmental factors is reduced, thereby ensuring the reliability of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery pack technology, and in particular to a battery pack housing, a battery pack, and an electrical device. Background Technology

[0002] Currently, battery packs are widely used in electrical equipment such as new energy vehicles and energy storage power stations because they can store and provide electrical energy.

[0003] In related technologies, high-voltage connectors are used to lead the positive or negative terminals of the battery module to the distribution box, and they are usually installed in the housing cavity of the battery pack.

[0004] However, the installation method of the high-voltage connector in the existing battery pack is susceptible to environmental factors, which reduces the reliability of the battery pack. Summary of the Invention

[0005] Based on this, this application provides a battery pack housing, a battery pack, and an electrical device to solve the problem that the installation method of the high-voltage connection busbar in the existing battery pack is easily affected by environmental factors, thereby reducing the reliability of the battery pack.

[0006] In a first aspect, this application provides a battery pack, comprising:

[0007] The enclosure body has a mounting cavity inside, which is used to install at least a power distribution device and / or at least one battery assembly.

[0008] At least one connecting bar, a portion of which is embedded in the housing, and another portion of which extends into the mounting cavity and is used to connect to a power distribution device or battery assembly.

[0009] In one possible implementation, the connecting bar includes a body segment and at least one connecting segment, with the body segment embedded within the box body.

[0010] The connecting section is attached to one side of the body section and extends into the mounting cavity for connection to a power distribution unit or battery assembly.

[0011] In one possible implementation, the thickness direction of the body segment is perpendicular to the depth direction of the mounting cavity;

[0012] And / or, the thickness direction of the connecting section is parallel to the depth direction of the mounting cavity.

[0013] In one possible implementation, the connecting segment is located above the body segment and is bent to one side.

[0014] In one possible implementation, there are multiple connection bars, and at least one connection bar is used to connect the power distribution device and the battery assembly respectively.

[0015] And / or, at least one connection bar is used to connect two adjacent battery components respectively.

[0016] In one possible implementation, the box body includes a frame and a base plate, and the frame includes multiple side beams;

[0017] Multiple edge beams are connected end to end and are respectively connected to the bottom plate, and at least a portion of the main body segment of at least one connecting row is embedded in the edge beam.

[0018] In one possible implementation, the frame further includes at least one reinforcing beam disposed on the base plate and located within the mounting cavity;

[0019] The two ends of the reinforcing beam are respectively connected to two opposite side beams, and at least a portion of the main body segment of at least one connecting row is embedded in the reinforcing beam.

[0020] In one possible implementation, at least one of the edge beam and the reinforcing beam has a support, and the connecting section overlaps the corresponding support.

[0021] In one possible implementation, the box body is made of plastic.

[0022] In one possible implementation, the connecting bar and the box body are integrally injection molded.

[0023] Secondly, this application also provides a battery pack, including any of the battery pack housings provided in the first aspect.

[0024] In one possible implementation, it also includes a power distribution device and at least one battery assembly, the power distribution device and the battery assembly being respectively disposed in the mounting cavity of the battery pack housing, and at least one connecting bar being connected to the power distribution device or the battery assembly.

[0025] In one possible implementation, the power distribution device has a first positive terminal and a first negative terminal, and the battery assembly has a second positive terminal and a second negative terminal.

[0026] The connector is connected to the first positive terminal, the second positive terminal, the first negative terminal, or the second negative terminal.

[0027] In one possible implementation, at least one connecting bar is connected to the first positive lead and the second positive lead, respectively;

[0028] And / or, at least one connecting bar is connected to the first negative lead and the second negative lead, respectively;

[0029] And / or, the number of battery components is at least two, and at least one connecting bar is respectively connected to the second positive terminal of one of the two battery components and the second negative terminal of the other of the two battery components.

[0030] Thirdly, this application also provides an electrical device, including any of the battery packs provided in the second aspect.

[0031] The battery pack housing, battery pack, and electrical equipment provided in this application include a housing body and at least one connecting bar. An installation cavity is formed within the housing body, where at least a power distribution device and / or at least one battery module are installed. A portion of the connecting bar is embedded within the housing body, while another portion extends into the installation cavity and connects to the power distribution device or battery module. Therefore, the battery pack provided in this application covers the connecting bar with the housing body, reducing exposed portions and minimizing the impact of environmental factors on the connecting bar, thereby ensuring the reliability of the battery pack. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the battery pack housing provided in an embodiment of this application;

[0034] Figure 2 for Figure 1 Exploded view;

[0035] Figure 3 for Figure 1 A sectional view along section AA;

[0036] Figure 4 for Figure 1 A sectional view along section BB;

[0037] Figure 5 This is a partial structural schematic diagram of the battery pack provided in an embodiment of this application.

[0038] Figure label:

[0039] 10: Power distribution device; 11: First positive terminal; 12: First negative terminal; 20: Battery assembly; 21: Second positive terminal; 22: Second negative terminal;

[0040] 100: Box body; 101: Mounting cavity; 102: Support part; 110: Frame; 111: Side beam; 112: Reinforcing beam; 120: Base plate;

[0041] 200: Connecting section; 210: Body section; 220: Connecting section. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0043] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] As mentioned in the background section, in existing battery pack structures, the busbar (i.e., the connector) is installed in the housing cavity inside the pack, close to the battery module. When the battery cell leaks or water enters the pack, it can easily cause high-voltage arcing. Because the busbar is inside the pack and has no heat convection exchange with the external environment, the temperature rises and heat dissipation is poor when the battery pack is charged and discharged quickly, thus reducing the reliability of the battery pack.

[0045] Furthermore, existing extrusion bus solutions require the insulation layer to be extruded integrally with the copper / aluminum busbar, adding extra insulation costs. Longer busbars may be used between battery modules. To prevent the busbars from shifting during vehicle operation, additional fixing and cushioning foam are typically required. When connecting ultra-long busbars, to ensure the safety of battery module transport and ease of assembly, the long busbars are usually broken and then partially spliced ​​during overall pack assembly, further increasing costs. Additionally, the busbars occupy internal space within the battery pack when assembled between battery modules.

[0046] To address the aforementioned problems in the prior art, this application provides a battery pack housing, a battery pack, and an electrical device. The battery pack housing provided by this application includes a housing body and at least one connecting bar. By creating an installation cavity within the housing body, at least a power distribution device and / or at least one battery assembly are installed within the installation cavity. A portion of the connecting bar is embedded within the housing body, while another portion extends into the installation cavity and connects to the power distribution device or battery assembly. In other words, the housing body covers the connecting bar, reducing exposed portions and minimizing the impact of environmental factors on the connecting bar, thereby ensuring the reliability of the battery pack.

[0047] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0048] Firstly, referring to Figure 1-Figure 5 As shown in the figure, this application embodiment provides a battery pack housing, including:

[0049] The enclosure body 100 has a mounting cavity 101 inside, which is used to install at least a power distribution device 10 and / or at least one battery assembly 20.

[0050] At least one connecting bar 200, a portion of which is embedded within the housing body 100, and another portion of which extends into the mounting cavity 101 and is used to connect to the power distribution device 10 or the battery assembly 20.

[0051] In this embodiment, the box body 100, also known as the tray, is mainly used to support the battery assembly 20 and related components, such as the power distribution device 10. The box body 100 is generally rectangular shell-shaped and can be integrally formed or assembled from profiles. The box body 100 has a mounting cavity 101, in which at least the power distribution device 10 and at least one battery assembly 20 are installed.

[0052] In this embodiment, the connecting bus 200, also known as the busbar, is used to connect between the power distribution device 10 and the battery module 20 or between multiple battery modules 20 to form a high-voltage circuit. It can be a copper busbar, an aluminum busbar, etc.

[0053] Specifically, if Figures 1-4 As shown, a portion of the connecting bar 200 is embedded in the housing body 100, such as in the beam or bottom plate of the housing body 100. That is, the housing body 100 covers most of the surface of the connecting bar 200, and another portion of the connecting bar 200 extends into the mounting cavity 101 and is connected to the power distribution device 10 or the battery assembly 20.

[0054] Understandably, compared to existing methods that place the busbars within the housing cavity of the battery pack, the application of the battery pack housing in this embodiment, on the one hand, covers most of the main body of the connecting busbar 200 by the housing body 100, preventing arcing between the busbar and the battery under extreme conditions such as leakage or water ingress, thus reducing the chance of environmental factors affecting the connecting busbar 200 and improving the reliability of the battery pack. On the other hand, the connecting busbar 200 can be fixed by the housing body 100, eliminating the need for additional fixing and buffering structures within the pack, thereby reducing costs.

[0055] It is worth noting that by integrating most of the connecting strips 200 within the housing body 100, the wiring of the connecting strips 200 does not occupy space within the mounting cavity 101, thus saving space and allowing the battery pack to further increase its energy density. Furthermore, the connecting strips 200 can directly transfer heat to the outside through the housing body 100, resulting in a shorter heat transfer path and improved heat dissipation. Additionally, there is no need to consider fixing the connecting strips 200, nor is it necessary to break them for safety reasons and then reconnect them in sections, thereby improving assembly efficiency and further reducing production costs.

[0056] Therefore, the battery pack housing provided in this embodiment includes a housing body 100 and at least one connecting bar 200. By opening an installation cavity 101 in the housing body 100, at least a power distribution device 10 and / or at least one battery assembly 20 are installed in the installation cavity 101. By embedding a part of the connecting bar 200 in the housing body 100 and extending another part of the connecting bar 200 into the installation cavity 101 and connecting it to the power distribution device 10 or the battery assembly 20, the connecting bar 200 is covered by the housing body 100, reducing the exposed part and reducing the chance of environmental factors affecting the connecting bar 200, thereby ensuring the reliability of the battery pack.

[0057] In some embodiments, the connecting bar 200 includes a body segment 210 and at least one connecting segment 220, wherein the body segment 210 is embedded within the box body 100.

[0058] The connecting section 220 is connected to one side of the body section 210 and extends to the mounting cavity 101 for connection to the power distribution device 10 or the battery assembly 20.

[0059] For example, such as Figure 4 As shown, the connecting strip 200 includes a body section 210 and two connecting sections 220. The body section 210 is elongated, and the two connecting sections 220 are respectively connected to the two ends of the body section 210. The connecting sections 220 and the body section 210 can be integrally formed.

[0060] Specifically, the main body section 210 is embedded in the box body 100, such as in the beam or bottom plate of the box body 100. The two connecting sections 220 are located in the mounting cavity 101 and are used to connect to the power distribution device 10 or the battery assembly 20. That is, only the part of the connecting strip 200 that is connected to the power distribution device 10 or the battery assembly 20 is exposed in the mounting cavity 101.

[0061] This avoids the influence of environmental factors within the package on the body segment 210. The specific shape and length of the body segment 210 and the connecting segment 220 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0062] Furthermore, in this embodiment, the thickness direction of the body segment 210 is perpendicular to the depth direction of the mounting cavity 101.

[0063] And / or, the thickness direction of the connecting segment 220 is parallel to the depth direction of the mounting cavity 101.

[0064] Specifically, the connecting row 200 is a long strip-shaped sheet or plate-like structure, and the thickness direction of the body segment 210 is as follows: Figure 2 As shown in the X and Y axis directions, the depth direction of the mounting cavity 101 is as follows: Figure 2 The Z-axis is shown in the middle, while the X-axis, Y-axis and Z-axis are perpendicular to each other.

[0065] In this way, when the main body segment 210 is embedded in the side beam or reinforcing beam, the size occupied in the X and Y directions is small, thereby avoiding the side beam or reinforcing beam being too thick. That is, the main body segment 210 can be perfectly embedded in the thinner side beam or reinforcing beam, thus saving the material required to manufacture the box body 100 and improving the overall rigidity of the box body 100.

[0066] Additionally, the thickness direction of the connecting segment 220 is as follows: Figure 2 As shown in the Z-axis direction, this allows the large surface to face upwards, which facilitates welding, screwing, riveting, and other operations, and also provides stronger support.

[0067] Furthermore, in this embodiment, the connecting segment 220 is located above the body segment 210 and is bent to one side. For example, the connecting segment 220 is bent to one side until it is horizontal.

[0068] This satisfies installation requirements while facilitating the fabrication of the connecting strip 200. It should be noted that, to avoid large tolerances between the connecting section 220 and each lead-out end, the connecting section 220 can be manufactured as a laminated structure, i.e., a flexible connection, allowing the connecting section 220 to move along... Figure 2 Adjust the height along the Z-axis to achieve a perfect connection.

[0069] Alternatively, the pre-processed connecting strip 200 can be pre-embedded in the mold, and then injection molding or compression molding can be performed through the mold to make the connecting strip 200 and the box body 100 form an integral whole, which facilitates processing, reduces assembly steps, and is efficient and low-cost.

[0070] In some embodiments, there are multiple connection bars 200, and at least one connection bar 200 is used to connect the power distribution device 10 and the battery assembly 20 respectively.

[0071] And / or, at least one connection row 200 is used to connect two adjacent battery assemblies 20 respectively.

[0072] Specifically, the connecting bus 200 can be a positive connecting bus, which connects to the positive terminal of the power distribution device 10 and the positive terminal of the battery pack 20. The connecting bus 200 can also be a negative connecting bus, which connects to the negative terminal of the power distribution device 10 and the negative terminal of the battery pack 20. When there are multiple battery packs 20, the connecting bus 200 can also be a bridging connecting bus, which connects to the positive and negative terminals of two adjacent battery packs 20, thereby forming a high-voltage circuit.

[0073] In some embodiments, the box body 100 includes a frame 110 and a base plate 120, and the frame 110 includes a plurality of side beams 111.

[0074] Multiple edge beams 111 are connected end to end and are respectively connected to the base plate 120, and at least a portion of the main body segment 210 of at least one connecting row 200 is embedded in the edge beam 111.

[0075] For example, such as Figure 2 As shown, the frame 110 can be formed by connecting four side beams 111 in sequence. The side beams 111 can be formed by injection molding or compression molding. Taking the connecting row 200 as the positive terminal connecting row as an example, as... Figures 2-4 As shown, a portion of the main body section 210 of the positive electrode connection bar is embedded in the side beam 111.

[0076] Of course, the box body 100 may also include a bottom plate 120 and a cover. The bottom plate 120 may be integrally formed with the frame 110, or it may be connected to the bottom of the frame 110 by means of screwing, bonding or other methods. The cover covers the top of the frame 110 to form an installation cavity 101.

[0077] In addition, wire holes, explosion-proof valve mounting holes, and lifting lugs may also be provided on the side beam 111. Other structures on the side beam 111 can be determined according to actual installation requirements, and no specific limitations are made in this embodiment.

[0078] Furthermore, in this embodiment, the frame 110 also includes at least one reinforcing beam 112, which is disposed on the base plate 120 and located within the mounting cavity 101.

[0079] The two ends of the reinforcing beam 112 are respectively connected to two opposite side beams 111, and at least a portion of the body segment 210 of at least one connecting row 200 is embedded in the reinforcing beam 112.

[0080] For example, combined Figure 2 , Figure 5 As shown, there are two reinforcing beams 112 and two battery modules 20. The first reinforcing beam 112 is located between the power distribution device 10 and the battery module 20, and the second reinforcing beam 112 (i.e., the middle beam) is located between the two battery modules 20. The two ends of the reinforcing beam 112 are respectively connected to the opposite side beams 111. It can be integrally formed with the side beams 111. Weight reduction holes or weight reduction grooves can also be opened on the reinforcing beam 112 to save raw materials.

[0081] Among them, such as Figure 1 , Figure 2 As shown, another part of the body segment 210 of the positive electrode connecting bar is embedded in the first reinforcing beam 112, the body segment 210 of the negative electrode connecting bar is also embedded in the first reinforcing beam 112, and the body segment 210 of the bridging connecting bar is embedded in the second reinforcing beam 112. The specific number and position of the connecting bars 200 on the side beam 111 or reinforcing beam 112 can be determined according to actual needs; this embodiment does not impose specific limitations.

[0082] Furthermore, in this embodiment, at least one of the side beam 111 and the reinforcing beam 112 has a support portion 102, and the connecting section 220 overlaps on the corresponding support portion 102.

[0083] For example, such as Figure 1 , Figure 2 As shown, the side beam 111 and the reinforcing beam 112 are provided with support parts 102, such as support columns or support steps, corresponding to the positions of the connecting sections 220, and the connecting sections 220 are correspondingly overlapped on the support parts 102.

[0084] In this way, the support portion 102 supports the connecting section 220, increasing the strength of the connecting section 220 and thus improving the stability of the connection with each lead-out end. The specific shape, number, and position of the support portion 102 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0085] In some embodiments, the box body 100 is made of plastic.

[0086] For example, the box body 100 may be made of one or more of the following materials: polyamide resin (PA), polyethylene (PE), polypropylene (PP), glass fiber reinforced polypropylene (PP+GF), epoxy resin (ER), polyphenylene ether (PPO).

[0087] It is worth noting that, due to the good insulation properties of plastic, the connection busbar 200 and the housing body 100 are integrally injection molded. Compared with the multiple or single-layer insulation protection of traditional high-voltage busbars, such as heat shrink tubing, PA layer, mica, PI, ceramic composite tape, etc., the connection busbar 200 is insulated by the housing body 100 in this embodiment of the application. Therefore, the insulation layer on the connection busbar 200 can be reduced or even eliminated, further reducing the cost.

[0088] Secondly, embodiments of this application also provide a battery pack, including the battery pack housing provided in any of the above embodiments.

[0089] The structure of the battery pack housing has been described in detail in the above embodiments, and will not be repeated here.

[0090] The battery pack provided in this application embodiment, by configuring the aforementioned battery pack housing, includes a housing body 100 and at least one connecting bar 200. By opening an installation cavity 101 in the housing body 100, at least a power distribution device 10 and / or at least one battery assembly 20 are installed in the installation cavity 101. By embedding a portion of the connecting bar 200 in the housing body 100 and extending another portion of the connecting bar 200 into the installation cavity 101 and connecting it to the power distribution device 10 or the battery assembly 20, the connecting bar 200 is covered by the housing body 100, reducing exposed portions and lowering the chance of environmental factors affecting the connecting bar 200, thereby ensuring the reliability of the battery pack.

[0091] In some embodiments, the battery pack provided in this application further includes a power distribution device 10 and at least one battery assembly 20. The power distribution device 10 and the battery assembly 20 are respectively disposed in the mounting cavity 101 of the battery pack housing, and at least one connecting bar 200 is connected to the power distribution device 10 or the battery assembly 20.

[0092] Specifically, such as Figure 5 As shown, the power distribution unit 10 and the battery assembly 20 are along... Figure 5 The cells are arranged at intervals in the opposite direction of the X-axis. The battery module 20 consists of multiple cells, which are roughly rectangular in shape, resembling plates or plates, such as blade batteries. Each cell is arranged along... Figure 5 Stacked along the Y-axis. Connected to the power distribution unit 10 or battery assembly 20 via the connecting bar 200, facilitating the formation of a high-voltage circuit.

[0093] Furthermore, in this embodiment, the power distribution device 10 has a first positive terminal 11 and a first negative terminal 12, and the battery assembly 20 has a second positive terminal 21 and a second negative terminal 22.

[0094] The connector 200 is connected to the first positive terminal 11, the second positive terminal 21, the first negative terminal 12, or the second negative terminal 22.

[0095] Specifically, such as Figure 5 As shown, the first positive lead 11, the first negative lead 12, the second positive lead 21, and the second negative lead 22 can all be connecting pieces. The connecting bar 200 and each connecting piece can be connected by welding, screwing, riveting, or other methods.

[0096] Furthermore, in this embodiment, at least one connecting bar 200 is connected to the first positive lead 11 and the second positive lead 21, respectively.

[0097] And / or, at least one connecting bar 200 is connected to the first negative lead 12 and the second negative lead 22, respectively.

[0098] And / or, the number of battery components 20 is at least two, and at least one connection bar 200 is respectively connected to the second positive terminal 21 of one of the two battery components 20 and the second negative terminal 22 of the other of the two battery components 20.

[0099] For example, the number of battery modules 20 is two, namely a first battery module and a second battery module, and the power distribution device 10 and the first battery module and the second battery module are along Figure 5 The components are arranged at intervals in opposite directions along the X-axis. One connecting bus 200 is a positive connecting bus, which connects to the first positive lead 11 on the power distribution device 10 and the second positive lead 21 on the second battery assembly. One connecting bus 200 is a negative connecting bus, which connects to the first negative lead 12 on the power distribution device 10 and the second negative lead 22 on the first battery assembly. One connecting bus 200 is a bridging connecting bus, which connects to the second positive lead 21 on the first battery assembly and the second negative lead 22 on the second battery assembly, thereby forming a high-voltage circuit.

[0100] Of course, the number of battery components 20 can also be increased. The specific number and arrangement can be determined according to actual needs. This embodiment does not impose too many restrictions.

[0101] Thirdly, embodiments of this application also provide an electrical device, including the battery pack provided in any of the above embodiments. This electrical device can be a new energy vehicle, an energy storage power station, etc.

[0102] The electrical equipment provided in this application embodiment, by configuring the above-mentioned battery pack, includes a battery pack housing, which includes a housing body 100 and at least one connecting bar 200. By opening an installation cavity 101 in the housing body 100, at least a power distribution device 10 and / or at least one battery assembly 20 are installed in the installation cavity 101. By embedding a part of the connecting bar 200 in the housing body 100 and extending another part of the connecting bar 200 into the installation cavity 101 and connecting it to the power distribution device 10 or the battery assembly 20, the connecting bar 200 is covered by the housing body 100, reducing the exposed part and reducing the chance of environmental factors affecting the connecting bar 200, thereby ensuring the reliability of the battery pack.

[0103] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0104] It should be understood that this application is not limited to the precise structures described above and shown in the appendix, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack housing, characterized in that, include: The housing body (100) has a mounting cavity (101) therein, which is used to install at least a power distribution device (10) and / or at least one battery assembly (20). At least one connecting bar (200), a portion of which is embedded in the housing body (100), and another portion of which extends into the mounting cavity (101) and is used to connect to the power distribution device (10) or the battery assembly (20).

2. The battery pack housing according to claim 1, characterized in that, The connecting bar (200) includes a body section (210) and at least one connecting section (220), the body section (210) being embedded within the box body (100); The connecting segment (220) is connected to one side of the body segment (210) and extends to the mounting cavity (101) for connection to the power distribution device (10) or the battery assembly (20).

3. The battery pack housing according to claim 2, characterized in that, The thickness direction of the body segment (210) is perpendicular to the depth direction of the mounting cavity (101); And / or, the thickness direction of the connecting segment (220) is parallel to the depth direction of the mounting cavity (101).

4. The battery pack housing according to claim 3, characterized in that, The connecting segment (220) is located on the upper part of the body segment (210) and is bent to one side.

5. The battery pack housing according to claim 1, characterized in that, The number of the connecting bars (200) is multiple, and at least one of the connecting bars (200) is used to connect the power distribution device (10) and the battery assembly (20) respectively. And / or, at least one of the connection rows (200) is used to connect two adjacent battery assemblies (20), respectively.

6. The battery pack housing according to claim 1, characterized in that, The box body (100) includes a frame (110) and a bottom plate (120), and the frame (110) includes a plurality of side beams (111). Multiple side beams (111) are connected end to end and respectively connected to the base plate (120), and at least a portion of the main body segment (210) of at least one connecting row (200) is embedded in the side beam (111).

7. The battery pack housing according to claim 6, characterized in that, The frame (110) also includes at least one reinforcing beam (112), which is disposed on the base plate (120) and located within the mounting cavity (101); The two ends of the reinforcing beam (112) are respectively connected to two opposite side beams (111), and at least a portion of the body segment (210) of at least one connecting row (200) is embedded in the reinforcing beam (112).

8. The battery pack housing according to claim 7, characterized in that, At least one of the side beam (111) and the reinforcing beam (112) has a support (102), and the connecting section (220) overlaps the support (102).

9. The battery pack housing according to any one of claims 1 to 8, characterized in that, The box body (100) is made of plastic.

10. The battery pack housing according to claim 9, characterized in that, The connecting bar (200) and the box body (100) are integrally injection molded.

11. A battery pack, characterized in that, Includes the battery pack housing as described in any one of claims 1 to 10.

12. The battery pack according to claim 11, characterized in that, It also includes a power distribution device (10) and at least one battery assembly (20), wherein the power distribution device (10) and the battery assembly (20) are respectively disposed in the mounting cavity (101) of the battery pack housing, and at least one of the connecting bars (200) is connected to the power distribution device (10) or the battery assembly (20).

13. The battery pack according to claim 12, characterized in that, The power distribution device (10) has a first positive terminal (11) and a first negative terminal (12), and the battery assembly (20) has a second positive terminal (21) and a second negative terminal (22). The connecting bar (200) is connected to the first positive lead (11) or the second positive lead (21) or the first negative lead (12) or the second negative lead (22).

14. The battery pack according to claim 13, characterized in that, At least one of the connecting bars (200) is connected to the first positive lead (11) and the second positive lead (21), respectively. And / or, at least one of the connecting bars (200) is connected to the first negative lead-out terminal (12) and the second negative lead-out terminal (22), respectively. And / or, the number of battery assemblies (20) is at least two, and at least one of the connection bars (200) is connected to the second positive terminal (21) of one of the two battery assemblies (20) and the second negative terminal (22) of the other of the two battery assemblies (20).

15. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 11 to 14.

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