Shell assembly of battery pack, battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a shell assembly of a battery pack, the battery pack and electric equipment. The shell assembly of the battery pack comprises a box body and a top cover, the box body comprises a box main body and a bearing plate, the top cover covers the top of the box main body, the top cover and the box main body jointly define a containing cavity used for containing a battery cell module, at least part of the structure of the top wall of the top cover is sunken towards the interior of the containing cavity to form an avoiding groove used for avoiding a vehicle frame, and the bearing plate is arranged on the bearing plate. The top cover further comprises an electrical installation part, the electrical installation part is used for arranging an electrical connection part, the avoiding groove surrounds the electrical installation part, and the electrical connection part is used for connecting the battery pack with electric equipment on the vehicle. According to the shell assembly of the battery pack, the space layout in a vehicle can be optimized, so that the battery pack is more tightly matched with the vehicle frame, the battery pack is prevented from interfering with the vehicle frame in the mounting process, and the mounting precision and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack housing assembly, a battery pack, and an electrical device. Background Art

[0002] The battery pack is the primary energy storage device in electric vehicles, responsible for storing the electrical energy needed to propel the vehicle. The battery pack powers the electric motor, enabling the vehicle to start, accelerate, or maintain a constant speed. In hybrid electric vehicles, the battery pack can also provide auxiliary power to the internal combustion engine. In addition to powering the electric motor, the battery pack also powers other electrical systems in the vehicle, such as lighting, air conditioning, and entertainment systems.

[0003] The outer shell of an existing battery pack is usually made of high-strength materials (such as aluminum alloy or stainless steel) to protect the battery cell modules and other components inside.

[0004] However, when installing the battery pack on the vehicle frame, due to the complexity of the frame structure and space limitations, the battery pack shell often interferes with the crossbeams or longitudinal beams of the frame, squeezing the installation space of the battery pack and making installation difficult. Utility Model Content

[0005] The present application provides a battery pack shell assembly, a battery pack, and electrical equipment, which can optimize the space layout inside the vehicle, make the battery pack and the frame fit more closely, avoid interference between the battery pack and the frame during installation, and improve the installation accuracy and efficiency.

[0006] In a first aspect, an embodiment of the present application provides a battery pack housing assembly, wherein the battery pack is mounted on a vehicle frame, and the housing assembly comprises: a box body and a top cover, wherein the box body comprises a box body and a supporting plate, and the top cover is disposed on the top of the box body and together with the box body defines a receiving cavity for receiving a battery cell module.

[0007] At least part of the structure of the top wall of the top cover is recessed toward the accommodating cavity to form an avoidance groove for avoiding the frame. The top cover also includes an electrical installation portion, which is used to set electrical connection components, and the avoidance groove surrounds the electrical installation portion, wherein the electrical connection components are used to connect the battery pack to electrical equipment on the vehicle.

[0008] In a possible implementation, the vehicle frame includes two longitudinal beams spaced apart in the left-right direction of the vehicle and two transverse beams spaced apart in the front-rear direction of the vehicle;

[0009] The avoidance groove includes two first groove sections and two second groove sections, wherein the two first groove sections are respectively located on opposite sides of the electrical installation part along the left-right direction of the vehicle, and the two second groove sections are respectively located on opposite sides of the electrical installation part along the front-rear direction of the vehicle, the two cross beams are respectively matched with the two second groove sections, and the two longitudinal beams are respectively matched with the two first groove sections.

[0010] In one possible implementation, the top cover is further provided with an avoidance recess recessed along the left-right direction of the vehicle, the avoidance recess being located at the intersection of the first slot section and the second slot section, and the avoidance recess is used for avoidance and for fixing the battery pack to the mounting frame of the vehicle frame.

[0011] In a possible implementation, the electrical installation portion is further provided with a ventilation valve, wherein a plurality of ventilation valves are arranged at intervals, and the ventilation valves are used to balance the pressure inside and outside the accommodating cavity.

[0012] In one possible implementation, the housing assembly of the battery pack further includes:

[0013] The explosion-proof valve is provided on the box body and is located on one side wall of the box body along the left-right direction of the vehicle.

[0014] In one possible implementation, the housing assembly of the battery pack further includes:

[0015] The heat-insulating component is at least arranged on two outer side walls of the box body along the front-rear direction of the vehicle, and the heat-insulating component is fixedly connected to the box body.

[0016] In a possible implementation, the box body includes two first side walls that are opposite to each other along the front-rear direction of the vehicle.

[0017] The first side wall is provided with a reinforcement portion protruding outward along the front-rear direction of the vehicle, the reinforcement portion extends along the left-right direction of the vehicle, the reinforcement portion is spaced apart from the bottom end of the first side wall, and the reinforcement portion is provided with a connecting hole penetrating along the height direction of the vehicle, and the box body is fixed to the mounting frame of the vehicle frame by fasteners passing through the connecting hole.

[0018] In one possible implementation, the reinforcement portion is provided with a plurality of mounting structures, and the mounting structure is provided on the side of the reinforcement portion facing away from the accommodating cavity along the front-rear direction of the vehicle, and / or the mounting structure is provided at one end of the reinforcement portion along the left-right direction of the vehicle.

[0019] In one possible implementation, the housing assembly of the battery pack further includes:

[0020] A plurality of positioning components, wherein the plurality of positioning components are arranged on the outer side wall of the box body, and the positioning components include:

[0021] A mounting block, fixedly connected to the box body, and provided with a mounting hole;

[0022] A positioning pin is inserted into the mounting hole and is used for positioning and cooperating with the mounting frame of the vehicle frame.

[0023] In a second aspect, an embodiment of the present application provides a battery pack, comprising:

[0024] A housing assembly of a battery pack according to any one of the above possible embodiments;

[0025] A plurality of battery cell modules are arranged in the accommodating cavity.

[0026] In a third aspect, an embodiment of the present application provides an electrical device comprising the above-mentioned battery pack.

[0027] The embodiments of the present application have at least the following beneficial effects: by designing a relief groove recessed into the accommodating cavity on the top wall of the roof cover, the roof cover structure can effectively avoid the crossbeams and longitudinal beams of the vehicle frame, thereby preventing interference during installation. Furthermore, the roof cover also includes an electrical installation portion for mounting electrical connection components, and the relief groove surrounds the electrical installation portion, ensuring that the electrical components are not affected by the frame structure. This design optimizes the interior space layout, ensuring a closer fit between the battery pack and the vehicle frame, and improving the accuracy and efficiency of battery pack installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0029] Figure 1 A schematic structural diagram of the housing assembly of the battery pack provided in this application;

[0030] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Description of reference numerals:

[0032] 100. Housing assembly;

[0033] 110. Box body; 111. First side wall; 112. Reinforcement portion; 1121. Connection hole; 113. Mounting structure;

[0034] 120, top cover; 121, avoidance groove; 1211, first groove section; 1212, second groove section; 1213, avoidance recess; 122, electrical installation portion; 1221, vent valve;

[0035] 130. Explosion-proof valve;

[0036] 140. Insulation parts;

[0037] 150. Positioning assembly; 151. Mounting block; 152. Positioning pin. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the implementation of the application described herein, for example, can be implemented in an order other than those illustrated or described herein. In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0040] The outer shell of an existing battery pack is typically a box body made of high-strength materials (such as aluminum alloy or stainless steel) to protect the battery cell modules and other components inside. The box body is usually a rectangular or cuboid container. However, when installing the battery pack on the vehicle frame, due to the complexity of the frame structure and space limitations, the battery pack shell often interferes with the crossbeams or longitudinal beams of the frame, squeezing the installation space of the battery pack and making installation difficult.

[0041] In view of this, the embodiments of the present application provide a battery pack housing assembly, a battery pack, and an electrical device. By designing a relief groove recessed into the accommodating cavity on the top wall of the top cover, the structure of the top cover can effectively avoid the crossbeams and longitudinal beams of the frame, thereby avoiding interference during installation. In addition, the top cover is also provided with an electrical installation portion for arranging electrical connection components, and the relief groove surrounds the electrical installation portion to ensure that the electrical components are not affected by the frame structure. Through the above design, the interior space layout of the vehicle can be optimized, the battery pack and the frame can be more closely matched, and the installation accuracy and efficiency of the battery pack can be improved.

[0042] refer to Figure 1 The present invention provides a battery pack housing assembly 100 for mounting on a vehicle frame. The battery pack housing assembly 100 includes a housing and a top cover 120. The housing includes a main body 110 and a carrier plate. The top cover 120 is mounted on top of the main body 110 and, together with the main body 110, defines a cavity for accommodating a battery cell module.

[0043] It is understood that the box body 110 is the foundation of the entire housing assembly 100, directly enclosing and protecting the battery modules and other electronic components within it. The carrier plate can be located within the box body 110, primarily used to secure and support the battery modules, ensuring they do not shift due to vibration or collision during transportation and use.

[0044] In a possible design, the top cover 120 and the box body 110 can be connected by bolts. Positioning holes and threaded holes can be provided on the contact surface of the top cover 120 and the box body 110. The positioning holes are used for the preliminary alignment of the top cover 120 and the box body 110, and the threaded holes are used for the final fixation of the top cover 120 and the box body 110. The box body 110 can also be provided with positioning posts, and corresponding positioning holes can be designed at the corresponding positions of the top cover 120. In this way, the top cover 120 and the box body 110 can be preliminarily aligned by the positioning posts. After the top cover 120 is aligned with the box body 110, bolts are inserted through the threaded holes and tightened with nuts to thereby achieve the connection and fixation of the top cover 120 and the box body 110.

[0045] In one possible design, a rubber sealing ring or other forms of sealing members may be installed between the top cover 120 and the box body 110 to ensure waterproof and dustproof performance of the connection.

[0046] At least a portion of the top wall of the top cover 120 is recessed into the housing cavity, forming a clearance groove 121 for clearing the vehicle frame. The top cover 120 also includes an electrical installation portion 122, which is used to accommodate electrical connectors. The clearance groove 121 surrounds the electrical installation portion 122. These connectors are used to connect the battery pack to electrical devices on the vehicle.

[0047] It is understood that the position and shape of the avoidance groove 121 can be designed based on the specific structure of the vehicle frame to ensure that the battery pack cover 120 can avoid the crossbeams or longitudinal beams on the vehicle frame. Optionally, a U-shaped avoidance groove 121 can be formed on the top wall of the cover 120, and the electrical installation portion 122 can be positioned within the area enclosed by the avoidance groove 121. The edges of the avoidance groove 121 can be rounded to reduce stress concentration and increase structural strength.

[0048] In a possible implementation, the vehicle frame includes two longitudinal beams spaced apart in the left-right direction of the vehicle and two transverse beams spaced apart in the front-rear direction of the vehicle.

[0049] It's understood that longitudinal beams run along the length of the vehicle (front-to-back), primarily supporting the vehicle's weight and providing longitudinal rigidity during driving. Crossbeams run along the width of the vehicle (left-to-right), primarily providing lateral rigidity to prevent excessive deformation during cornering or lateral forces. The crossbeams intersect with longitudinal beams to form a grid-like structure, enhancing the overall strength and stability of the frame and helping to distribute loads in different directions.

[0050] Furthermore, the grid-like structure formed by the crossbeams and longitudinal beams serves as a mounting base for the battery pack. This grid-like structure has high structural strength, providing stable support for the battery pack. The battery pack can be securely connected to the vehicle frame through bolts. In this way, by utilizing the space between the crossbeams and longitudinal beams and rationally arranging the battery pack's position, the space under the vehicle can be maximized while ensuring that the battery pack's installation does not affect other functional components of the vehicle.

[0051] Furthermore, the avoidance groove 121 includes two first groove sections 1211 and two second groove sections 1212. The two first groove sections 1211 are respectively located on opposite sides of the electrical installation portion 122 along the left-right direction of the vehicle, and the two second groove sections 1212 are respectively located on opposite sides of the electrical installation portion 122 along the front-back direction of the vehicle. The two crossbeams are respectively engaged with the two second groove sections 1212, and the two longitudinal beams are respectively engaged with the two first groove sections 1211.

[0052] It is understandable that the two first slot sections 1211 are respectively located on opposite sides of the electrical installation portion 122 along the left-right direction of the vehicle, with the purpose of avoiding the longitudinal beam and ensuring that there is sufficient clearance between the top cover 120 of the battery pack and the longitudinal beam. The shape of the first slot section 1211 can be rectangular or arc-shaped, depending on the cross-sectional shape of the longitudinal beam. The two second slot sections 1212 are respectively located on opposite sides of the electrical installation portion 122 along the front-rear direction of the vehicle, with the purpose of avoiding the cross beam and ensuring that there is sufficient clearance between the top cover 120 of the battery pack and the cross beam. Similarly, the shape of the second slot section 1212 can be rectangular or arc-shaped, depending on the cross-sectional shape of the cross beam.

[0053] In one possible implementation, continue to refer to Figure 1 The top cover 120 is also provided with an avoidance recess 1213 recessed along the left and right directions of the vehicle. The avoidance recess 1213 is located at the intersection of the first groove section 1211 and the second groove section 1212. The avoidance recess 1213 is used for avoidance and for fixing the battery pack to the mounting frame of the vehicle frame.

[0054] It can be understood that the avoidance recess 1213 is located at the intersection of the first groove section 1211 and the second groove section 1212. Its main purpose is to provide sufficient space for the battery pack so that the battery pack can be more securely installed on the vehicle's mounting frame. The structure of the avoidance recess 1213 can be customized according to specific installation requirements, and this application does not impose specific restrictions here. For example, the avoidance recess 1213 can be a rectangular groove, the size and shape of which can match the mounting frame to ensure that the mounting frame can be accurately embedded in the avoidance groove 121. This not only helps to simplify the installation process, but also ensures that the connection between the battery pack and the frame is more secure and reliable.

[0055] In a possible implementation, the electrical installation portion 122 is further provided with a plurality of air valves 1221 arranged at intervals, and the air valves 1221 are used to balance the pressure inside and outside the accommodating cavity.

[0056] It is understood that vent valve 1221 can regulate the air pressure within the battery compartment during vehicle operation, preventing excessively high or low internal pressure due to temperature fluctuations or altitude differences, thereby protecting electrical equipment from damage. Vent valve 1221 stabilizes the air pressure within the battery pack, helping to reduce stress on the battery pack due to pressure fluctuations, thereby extending the battery pack's service life.

[0057] In one possible implementation, refer to Figure 2 The battery pack housing assembly 100 further includes an explosion-proof valve 130 , which is disposed on the box body 110 and located on one side wall of the box body 110 along the left-right direction of the vehicle.

[0058] Specifically, the explosion-proof valve 130 can be made of high-temperature and corrosion-resistant materials to ensure it can still function normally under extreme conditions. In addition, the explosion-proof valve 130 has a certain strength threshold. When the internal pressure of the battery pack exceeds the set safety range, the explosion-proof valve 130 can automatically open to release excess pressure in the battery pack.

[0059] It is understandable that when the internal pressure of the battery pack increases abnormally, the battery pack can quickly release the pressure from the side wall through the explosion-proof valve 130 to avoid direct damage to the bottom or top of the vehicle.

[0060] In one possible implementation, refer to Figure 1 The battery pack housing assembly 100 further includes a heat preservation member 140 , which is at least arranged on two outer side walls of the box body 110 along the front and rear directions of the vehicle, and the heat preservation member 140 is fixedly connected to the box body 110 .

[0061] In one possible design, the thermal insulation member 140 and the box body 110 may be fixedly connected, for example, by bolts, buckles, or other mechanical fixing devices, to ensure that the thermal insulation member 140 does not loosen or fall off during driving of the vehicle.

[0062] In a possible design, the length of the heat preservation member 140 is less than the length of the two outer side walls of the box body 110 along the vehicle front-rear direction. Specifically, the heat preservation member 140 can cover a portion of the outer side wall, rather than the entire side wall, to reserve space for other functional components.

[0063] It can be understood that the main function of the insulation component 140 is to control the temperature of the battery pack. Especially in low temperature environments, the insulation component 140 can reduce heat loss inside the box, allowing the battery pack to operate within a preset temperature range, thereby improving the efficiency and life of the battery.

[0064] In one possible implementation, the box body 110 includes two first side walls 111 facing each other along the vehicle front-rear direction. The first side walls 111 are provided with a reinforcement portion 112 protruding outward along the vehicle front-rear direction, and the reinforcement portion 112 extends along the vehicle left-right direction.

[0065] In order to improve the structural strength and stability of the box body 110, each first side wall 111 is provided with a reinforcement portion 112 protruding outward in the front-to-back direction of the vehicle, and the reinforcement portion 112 extends in the left-to-right direction of the vehicle. Furthermore, the reinforcement portion 112 has a hollow inner cavity, in which a plurality of partitions are provided, and the plurality of partitions divide the inner cavity into a plurality of sub-chambers. The hollow design of the reinforcement portion 112 can reduce the overall weight while providing sufficient space for installing partitions and other auxiliary structures. At the same time, the sub-chambers can also be used to carry or guide other functional components, such as cables, pipes, etc.

[0066] In this way, the protruding reinforcement portion 112 combined with the internal partition design can significantly enhance the bending strength and torsional rigidity of the first side wall 111 of the box body 110, thereby improving the structural stability of the entire box. The design of the hollow inner cavity allows the box body 110 to reduce weight while ensuring structural strength, which is beneficial to improving the energy efficiency of the vehicle. In addition, the provision of multiple sub-chambers allows the battery pack to be dispersed to multiple small areas when encountering a side impact, thereby reducing the direct impact on the battery pack and improving the safety of the vehicle.

[0067] Furthermore, the reinforcement portion 112 is spaced apart from the bottom end of the first side wall 111 , and a connection hole 1121 is provided in the reinforcement portion 112 that passes through the vehicle height direction. The box body 110 is fixed to the mounting frame of the vehicle frame by fasteners passing through the connection hole 1121 .

[0068] As can be appreciated, securing the box body 110 to the mounting frame of the vehicle frame with fasteners ensures that the battery pack can be securely mounted on the vehicle under various road conditions, reducing the risk of displacement due to vibration or collision. Furthermore, the design of the connection holes 1121 facilitates faster installation, reducing installation difficulty and time costs.

[0069] In one possible implementation, refer to Figure 2 A plurality of mounting structures 113 are provided on the reinforcement portion 112. The mounting structure 113 is provided on the side of the reinforcement portion 112 facing away from the accommodating cavity along the front-rear direction of the vehicle, and / or the mounting structure 113 is provided at one end of the reinforcement portion 112 along the left-right direction of the vehicle.

[0070] It is understood that the mounting structure 113 is located on the side of the reinforcement portion 112 facing away from the accommodating cavity, that is, the side facing the vehicle exterior. This design fully utilizes the space outside the reinforcement portion 112 while facilitating installation and removal operations from the vehicle exterior. The mounting structure 113 can also be located at one end of the reinforcement portion 112 in the left-right direction of the vehicle, that is, at either end of the reinforcement portion 112. This design is suitable for situations where installation or removal from the side is required, particularly where space is limited or access is restricted.

[0071] In one possible implementation, refer to Figure 2 The battery pack housing assembly 100 further includes a plurality of positioning assemblies 150 . The plurality of positioning assemblies 150 are disposed on the outer sidewall of the box body 110 .

[0072] In one possible design, the battery pack housing assembly 100 may be provided with two positioning assemblies 150. The two positioning assemblies 150 are respectively located on two opposing outer side walls. Optionally, the two positioning assemblies 150 may be diagonally distributed.

[0073] It is understood that the two positioning assemblies 150 are located on opposite outer sidewalls, namely one on the front sidewall and the other on the rear sidewall. This arrangement provides balanced support points, making the battery pack more stable during installation. Furthermore, the two positioning assemblies 150 are arranged diagonally, providing support for the battery pack at different angles, increasing installation flexibility.

[0074] Furthermore, the positioning assembly 150 includes a mounting block 151 fixedly connected to the box body 110, and a mounting hole is provided on the mounting block 151. The positioning assembly 150 also includes a positioning pin 152 that can be inserted into the mounting hole. The positioning pin 152 is used to position and cooperate with the mounting frame of the vehicle frame.

[0075] In one possible design, the locating pin 152 can be designed to be cylindrical or conical, with its maximum diameter slightly smaller than the inner diameter of the mounting hole to facilitate insertion. The locating pin 152 should be long enough to ensure that it can be accurately positioned and matched with the mounting frame on the vehicle frame after being inserted into the mounting hole.

[0076] In addition, an embodiment of the present application further provides a battery pack, comprising:

[0077] The housing assembly 100 of the battery pack according to any one of the above possible embodiments;

[0078] A plurality of battery cell modules are arranged in the accommodating cavity.

[0079] The battery pack of the embodiment of the present application uses the above-mentioned battery pack housing assembly 100, so that the battery pack can fit more tightly with the vehicle frame.

[0080] In addition, an embodiment of the present application also provides an electrical device including the above-mentioned battery pack.

[0081] The electrical equipment of the embodiment of the present application can optimize the space layout inside the vehicle, make the battery pack and the frame fit more closely, avoid interference between the battery pack and the frame during installation, and improve the installation accuracy and efficiency.

[0082] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0083] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0084] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0085] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0086] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack housing assembly (100), characterized in that: The battery pack is mounted on a vehicle frame, and the housing assembly (100) comprises a box body and a top cover (120). The box body comprises a box body (110) and a supporting plate. The top cover (120) is arranged on the top of the box body (110) and defines together with the box body (110) a receiving cavity for receiving a battery cell module. At least a portion of the top wall of the top cover (120) is recessed toward the accommodating cavity to form an avoidance groove (121) for avoiding the vehicle frame. The top cover (120) further includes an electrical installation portion (122), the electrical installation portion (122) being used to set an electrical connection component, and the avoidance groove (121) surrounds the electrical installation portion (122), wherein the electrical connection component is used to connect the battery pack to an electrical device on the vehicle.

2. The battery pack housing assembly (100) according to claim 1, characterized in that: The vehicle frame includes two longitudinal beams spaced apart in the left-right direction of the vehicle and two transverse beams spaced apart in the front-rear direction of the vehicle; The avoidance groove (121) includes two first groove sections (1211) and two second groove sections (1212), wherein the two first groove sections (1211) are respectively located on opposite sides of the electrical installation part (122) along the left-right direction of the vehicle, and the two second groove sections (1212) are respectively located on opposite sides of the electrical installation part (122) along the front-rear direction of the vehicle, the two crossbeams are respectively matched with the two second groove sections (1212), and the two longitudinal beams are respectively matched with the two first groove sections (1211).

3. The battery pack housing assembly (100) according to claim 2, characterized in that: The top cover (120) is further provided with an avoidance recess (1213) recessed along the left-right direction of the vehicle. The avoidance recess (1213) is located at the intersection of the first groove section (1211) and the second groove section (1212). The avoidance recess (1213) is used for avoidance and for fixing the battery pack to the mounting frame of the vehicle frame.

4. The housing assembly (100) of the battery pack according to any one of claims 1 to 3, characterized in that: The electrical installation portion (122) is further provided with a vent valve (1221), wherein the vent valves (1221) are arranged in a plurality at intervals, and the vent valves (1221) are used to balance the pressure inside and outside the accommodating cavity.

5. The housing assembly (100) of the battery pack according to any one of claims 1 to 3, characterized in that: Also includes: An explosion-proof valve (130) is provided on the box body (110) and is located on a side wall of the box body (110) along the left-right direction of the vehicle.

6. The housing assembly (100) of the battery pack according to any one of claims 1 to 3, characterized in that: Also includes: A heat-insulating component (140) is provided at least on two outer side walls of the box body (110) along the front-rear direction of the vehicle, and the heat-insulating component (140) is fixedly connected to the box body (110).

7. The housing assembly (100) of the battery pack according to any one of claims 1 to 3, characterized in that: The box body (110) includes two first side walls (111) facing each other along the front-rear direction of the vehicle. The first side wall (111) is provided with a reinforcement portion (112) protruding outward along the front-rear direction of the vehicle, the reinforcement portion (112) extends along the left-right direction of the vehicle, the reinforcement portion (112) is spaced apart from the bottom end of the first side wall (111), the reinforcement portion (112) is provided with a connection hole (1121) penetrating along the height direction of the vehicle, and the box body (110) is fixed to the mounting frame of the vehicle frame by fasteners passing through the connection hole (1121).

8. The battery pack housing assembly (100) according to claim 7, characterized in that: The reinforcement portion (112) is provided with a plurality of mounting structures (113), wherein the mounting structures (113) are provided on a side of the reinforcement portion (112) facing away from the accommodating cavity along the front-rear direction of the vehicle, and / or the mounting structures (113) are provided at one end of the reinforcement portion (112) along the left-right direction of the vehicle.

9. The housing assembly (100) of the battery pack according to any one of claims 1 to 3, characterized in that: Also includes: A plurality of positioning components (150), wherein the plurality of positioning components (150) are arranged on the outer side wall of the box body (110), and the positioning components (150) include: A mounting block (151) is fixedly connected to the box body (110), and a mounting hole is provided on the mounting block (151); A positioning pin (152) is inserted into the mounting hole, and the positioning pin (152) is used for positioning and cooperating with the mounting frame of the vehicle frame.

10. A battery pack, characterized in that: include: The housing assembly (100) of the battery pack according to any one of claims 1 to 9; A plurality of battery cell modules are arranged in the accommodating cavity.

11. An electrical device, characterized in that: Including the battery pack according to claim 10.

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