Shell assembly of battery pack, battery pack and electric equipment

Abstract

The utility model discloses a shell assembly of a battery pack, the battery pack and electric equipment, the shell assembly comprises a shell, the shell defines an accommodating cavity, the accommodating cavity is provided with a first opening and a second opening which are adjacent to each other, and the accommodating cavity is used for accommodating at least one battery monomer; and the sealing cover is arranged on the shell so as to seal and cover the first opening and the second opening. According to the shell assembly provided by the embodiment of the utility model, the single battery can be mounted in the mounting cavity from one of the first opening and the second opening, and the position of the single battery can be observed and adjusted from the other one of the first opening and the second opening, so that the possibility that the single battery is obliquely mounted can be reduced when the single battery is mounted, and the mounting efficiency of the single battery is improved. And the uniformity between the battery monomers and the wall body of the mounting cavity is improved, the uniformity of the expansion force of the battery monomers restrained by the shell is improved, and the service life of the battery pack is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular, to a housing assembly of a battery pack, a battery pack, and an electrical device. Background Art

[0002] When a battery cell in the related art is installed in the housing of a battery pack, the battery cell is easily installed obliquely, resulting in a relatively large distance between some positions of the battery cell and the housing of the battery pack, and a relatively small distance between some positions of the battery cell and the housing of the battery pack. The housing of the battery pack has a poor ability to constrain the expansion force of the battery cell. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a housing assembly of a battery pack, which can install a battery cell into an installation cavity from one of a first open opening and a second open opening, and observe and adjust the position of the battery cell from the other of the first open opening and the second open opening. In this way, when installing the battery cell, the possibility of the battery cell being installed obliquely can be reduced, which is convenient for improving the uniformity between the battery cell and the wall of the installation cavity, improving the uniformity of the housing's constraint on the expansion force of the battery cell, and further improving the service life of the battery pack.

[0004] The utility model also provides a battery pack having the housing assembly.

[0005] The utility model also provides an electrical device having the battery pack.

[0006] The housing assembly of the battery pack according to the first aspect embodiment of the utility model includes: a housing that defines a receiving cavity having adjacent first and second open openings for receiving at least one battery cell; and a sealing cover provided on the housing to cover the first and second open openings.

[0007] According to the housing assembly embodiment of the utility model, a battery cell can be installed into an installation cavity from one of a first open opening and a second open opening, and the position of the battery cell can be observed and adjusted from the other of the first open opening and the second open opening. In this way, when installing the battery cell, the possibility of the battery cell being installed obliquely can be reduced, which is convenient for improving the uniformity between the battery cell and the wall of the installation cavity, improving the uniformity of the housing's constraint on the expansion force of the battery cell, and further improving the service life of the battery pack.

[0008] In addition, the housing assembly of the battery pack according to the above embodiment of the utility model may further have the following additional technical features:

[0009] According to some embodiments of the present utility model, the housing assembly further includes at least one partition board, and the partition board is disposed in the housing to divide the accommodation cavity into a plurality of installation cavities arranged along a first direction, and the installation cavities are used to accommodate the battery cells.

[0010] According to some embodiments of the present utility model, the housing is provided with a first explosion-proof valve, and the first explosion-proof valve is arranged on the side of the partition board close to the second open mouth.

[0011] According to some alternative embodiments of the present utility model, the partition board and / or the side wall of the housing are provided with exhaust channels, and each installation cavity is correspondingly provided with at least one exhaust channel, and the air outlet of the exhaust channel is arranged adjacent to the first explosion-proof valve.

[0012] According to some specific embodiments of the present utility model, the partition board is provided with an exhaust channel, and the second explosion-proof valve of each battery cell is arranged adjacent to or directly opposite to the exhaust channel.

[0013] In some embodiments, the exhaust channel penetrates through the partition board in the length direction of the partition board.

[0014] According to some specific embodiments of the present utility model, the partition board and / or the side wall of the accommodation cavity define a cavity, and the side of the cavity facing the first explosion-proof valve has a third open mouth, and the exhaust channel is communicated with the cavity.

[0015] According to some embodiments of the present utility model, the accommodation cavity has a placement cavity on one side of the partition board; the placement cavity is used to place a power distribution component electrically connected to the battery cell.

[0016] According to some alternative embodiments of the present utility model, a part of the power distribution component is adapted to be exposed outside the housing from the second open mouth.

[0017] According to some specific embodiments of the present utility model, the sealing cover seals the placement cavity.

[0018] According to some embodiments of the present utility model, the housing includes: a first side plate and a second side plate opposite to each other along the first direction; a bottom plate opposite to the first open mouth, wherein the first side plate, the second side plate, the bottom plate and the partition board are integrally formed.

[0019] According to some embodiments of the present utility model, the sealing cover includes a first cover body portion, and the first cover body portion covers the first open mouth; the first cover body portion is adhesively fixed between the edge of the first open mouth and the partition board; and / or, the first cover body portion and the partition board are fixedly connected by a first fastening member.

[0020] According to some alternative embodiments of the present utility model, the sealing cover is provided with a second cover portion, the second cover portion covers the second open opening, and the edge of the second cover portion and the second open opening are adhesively connected.

[0021] According to some specific embodiments of the present utility model, the housing includes a first side plate and a second side plate opposite to each other along the first direction, and a bottom plate opposite to the first open opening. One side of the first side plate facing the second open opening has a first mating surface, and one side of the second side plate facing the second open opening has a second mating surface. Both the first mating surface and the second mating surface are in contact with the second cover portion. Wherein, the first mating surface and the second mating surface extend obliquely towards the second cover portion along the direction from the first open opening to the bottom plate; alternatively, the first mating surface and the second mating surface extend towards the second cover portion in an arc shape along the direction from the first open opening to the bottom plate.

[0022] According to an embodiment of the second aspect of the present utility model, a battery pack is provided. The battery pack includes the housing assembly of the battery pack according to the embodiment of the first aspect of the present utility model and at least one battery cell, and the battery cell is a solid-state battery.

[0023] For the battery pack according to the embodiment of the present utility model, by using the housing assembly according to the embodiment of the first aspect of the present utility model, the battery cell can be installed into the installation cavity from one of the first open opening and the second open opening, and the position of the battery cell can be observed and adjusted from the other of the first open opening and the second open opening. In this way, when installing the battery cell, the possibility of the battery cell being installed crooked can be reduced, which is convenient for improving the uniformity between the battery cell and the wall body of the installation cavity, improving the uniformity of the expansion force of the housing restricting the battery cell, and further improving the service life of the battery pack.

[0024] According to an embodiment of the third aspect of the present utility model, an electrical device is provided. The electrical device includes the battery pack according to the embodiment of the second aspect of the present utility model.

[0025] For the electrical device according to the embodiment of the present utility model, by using the battery pack according to the embodiment of the second aspect of the present utility model, the battery cell can be installed into the installation cavity from one of the first open opening and the second open opening, and the position of the battery cell can be observed and adjusted from the other of the first open opening and the second open opening. In this way, when installing the battery cell, the possibility of the battery cell being installed crooked can be reduced, which is convenient for improving the uniformity between the battery cell and the wall body of the installation cavity, improving the uniformity of the expansion force of the housing restricting the battery cell, and further improving the service life of the battery pack.

[0026] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0027] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is an exploded view of the structure of a battery pack according to an embodiment of the present utility model;

[0029] Figure 2 is a schematic structural view of a housing, a separator plate, and battery cells according to an embodiment of the present utility model;

[0030] Figure 3 is a schematic structural view of a sealing cover according to an embodiment of the present utility model;

[0031] Figure 4 is a schematic structural view of a housing and a separator plate according to an embodiment of the present utility model;

[0032] Figure 5 is Figure 4 an enlarged view of a partial area in.

[0033] Reference numerals: battery pack 1, housing 10, first open opening 111, second open opening 112, installation cavity 12, first through hole 13, placement cavity 14, first mating surface 141, second mating surface 142, first side plate 151, second side plate 152,

[0034] separator plate 20, first fixing hole 21, battery cell 30, power distribution component 35,

[0035] sealing cover 40, first cover body part 41, second fixing hole 411, second cover body part 42, third side plate 421,

[0036] exhaust passage 51, cavity 52, third open opening 521. Detailed Description of the Embodiments

[0037] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0038] The housing assembly of a battery pack according to an embodiment of the present utility model will be described below with reference to the drawings.

[0039] As Figures 1 - 5As shown, the housing assembly of the battery pack according to an embodiment of the present utility model includes a housing 10 and a sealing cover 40.

[0040] The housing 10 defines a receiving cavity, and the receiving cavity has adjacent first open openings 111 and second open openings 112. Among them, when installing the battery cell 30 into the installation cavity 12, the battery cell 30 can be installed into the installation cavity 12 from one of the first open opening 111 and the second open opening 112, and the position of the battery cell 30 can be observed and adjusted from the other of the first open opening 111 and the second open opening 112. In this way, when installing the battery cell 30, the possibility of the battery cell 30 being installed obliquely can be reduced, and further it is convenient to improve the uniformity between the battery cell 30 and the wall of the receiving cavity.

[0041] The sealing cover 40 is provided on the housing 10 to cover the first open opening 111 and the second open opening 112, thereby forming a closed space to provide a stable working environment for the battery cell 30 and protect the battery cell 30.

[0042] Specifically, if the battery cell 30 is installed obliquely, the uniformity between the battery cell 30 and the wall of the receiving cavity is poor, which will lead to poor uniformity of the expansion force of the wall of the receiving cavity restricting the battery cell 30 and affect the service life of the battery pack 1. By improving the uniformity between the battery cell 30 and the wall of the receiving cavity in the present utility model, it is convenient to improve the uniformity of the expansion force of the housing 10 restricting the battery cell 30, and further improve the service life of the battery pack 1.

[0043] In the prior art, when installing the battery cell 30 into the receiving cavity, since the installation stroke of the battery cell 30 is long and it is not easy to observe, the battery cell 30 is likely to be installed obliquely. In the present utility model, the position of the battery cell 30 can be adjusted during the process of installing the battery cell 30 into the receiving cavity, so as to reduce the possibility of the battery cell 30 being installed obliquely, further facilitate improving the uniformity between the battery cell 30 and the wall of the receiving cavity, facilitate improving the uniformity of the expansion force of the housing 10 restricting the battery cell 30, and further improve the service life of the battery pack 1.

[0044] Therefore, for the housing assembly according to an embodiment of the present utility model, the battery cell 30 can be installed into the installation cavity 12 from one of the first open opening 111 and the second open opening 112, and the position of the battery cell 30 can be observed and adjusted from the other of the first open opening 111 and the second open opening 112. In this way, when installing the battery cell 30, the possibility of the battery cell 30 being installed obliquely can be reduced, which is convenient to improve the uniformity between the battery cell 30 and the wall of the installation cavity 12, improve the uniformity of the expansion force of the housing 10 restricting the battery cell 30, and further improve the service life of the battery pack 1.

[0045] In some specific embodiments of the present utility model, such as Figures 1 - 5As shown, the housing assembly of the battery pack includes a housing 10 and a sealing cover 40.

[0046] In some embodiments of the present invention, as Figure 1 shown, the housing assembly includes at least one partition plate 20. The partition plate 20 is disposed in the housing 10 to divide the accommodation cavity into a plurality of installation cavities 12 arranged along a first direction. The installation cavities 12 are used to accommodate battery cells 30. Specifically, at least one battery cell 30 is disposed in each installation cavity 12.

[0047] The sealing cover 40 is disposed on the housing 10 to cover the first open end 111 and the second open end 112, thereby closing the open ends of the installation cavities 12 to form a relatively airtight installation cavity 12, providing a stable working environment for the battery cells 30 and protecting the battery cells 30.

[0048] Specifically, if the battery cell 30 is installed crooked, the uniformity between the battery cell 30 and the wall of the installation cavity 12 is poor, which will result in poor uniformity of the expansion force of the battery cell 30 constrained by the wall of the installation cavity 12, affecting the service life of the battery pack 1. The present invention improves the uniformity between the battery cell 30 and the wall of the installation cavity 12, facilitating the improvement of the uniformity of the expansion force of the battery cell 30 constrained by the housing 10, and thus improving the service life of the battery pack 1.

[0049] In some alternative embodiments of the present invention, as Figure 4 shown, the first open end 111 is located at one end of the width direction of the installation cavity 12, and the second open end 112 is located at one end of the length direction of the installation cavity 12. The battery cell 30 is adapted to be installed into the installation cavity 12 from the first open end 111. This facilitates reducing the installation stroke of the battery cell 30, reducing the installation difficulty of the battery cell 30, improving the installation efficiency, and at the same time reducing the possibility of the battery cell 30 being installed crooked, and improving the uniformity between the battery cell 30 and the wall of the installation cavity 12.

[0050] Specifically, when installing the battery cell 30 into the installation cavity 12 from the first open end 111, the position of the battery cell 30 in the installation cavity 12 can be observed from the second open end 112, and the distance between the battery cell 30 and the wall of the installation cavity 12 can be observed to timely adjust the installation direction of the battery cell 30 when the battery cell 30 is installed crooked, and an auxiliary force can be applied from the second open end 112 to adjust the position of the battery cell 30 in the installation cavity 12, reducing the possibility of the battery cell 30 being installed crooked and improving the uniformity between the battery cell 30 and the wall of the installation cavity 12.

[0051] In some embodiments, the width of the installation cavity 12 is 0.09m~0.2m, and the length of the installation cavity 12 is 1m~2m, so that the battery cell 30 is installed from the first open mouth 111 into the installation cavity 12, so as to control the installation stroke of the battery cell 30 within 0.09m~0.2m. Compared with installing the battery cell 30 into the installation cavity 12 from the second open mouth 112, installing the battery cell 30 into the installation cavity 12 from the first open mouth 111 is convenient to reduce the installation stroke of the battery cell 30, thereby reducing the difficulty of installation and reducing the possibility of the battery cell 30 being installed crookedly.

[0052] In some embodiments, structural adhesive is coated on the bottom wall of the accommodating cavity, and the bottom wall of the accommodating cavity is arranged opposite to the first opening 111, so that when the battery cell 30 is installed into the installation cavity 12 from the first opening 111, when the battery cell 30 and the bottom wall of the installation cavity 12 are in contact, the structural adhesive can glue and fix the battery cell 30 in the installation cavity 12 to fix the position of the battery cell 30.

[0053] By improving the uniformity between the battery cell 30 and the wall of the installation cavity 12 and coating the bottom wall of the installation cavity 12 with structural adhesive, the battery cell 30 can be fixed in the installation cavity 12, so that the wall of the installation cavity 12 has a better restraining force on the expansion force of the battery cell 30, and there is no need to pour glue in the installation cavity 12, which is convenient for reducing costs and lightening the weight of the battery pack 1.

[0054] In some optional embodiments of the present invention, Figure 2 As shown, the shell 10 is provided with a first explosion-proof valve, and the first explosion-proof valve is arranged on the side of the partition plate 20 close to the second open port 112. When the pressure inside the battery pack 1 exceeds the first preset air pressure, the pressure can break through the first explosion-proof valve, thereby releasing the pressure inside the battery pack 1, reducing the pressure inside the battery pack 1, and preventing the battery pack 1 from rupturing or exploding.

[0055] Among them, the first explosion-proof valve is arranged on the side of the partition plate 20 close to the second open port 112, so that the gas generated by the battery cell 30 can quickly reach the first explosion-proof valve, and then when the pressure in the battery pack 1 exceeds the first preset air pressure, the pressure in the battery pack 1 can be quickly released to improve the safety of the battery pack 1.

[0056] In some specific embodiments of the present invention, Figure 4 , Figure 5As shown, the side wall of the partition plate 20 and / or the housing 10 is provided with an exhaust passage 51. Each installation cavity 12 is correspondingly provided with at least one exhaust passage 51. The air outlet of the exhaust passage 51 is adjacent to the first explosion-proof valve. The gas generated by the battery cell 30 can flow from the exhaust passage 51 towards the second open port 112, and then can reach near the first explosion-proof valve, so as to quickly release the pressure inside the battery pack 1 and reduce the pressure inside the battery pack 1 when the pressure inside the battery pack 1 exceeds the first preset air pressure, preventing the battery pack 1 from bursting or exploding.

[0057] In some embodiments, the housing assembly includes three partition plates 20, namely a first partition plate, a second partition plate and a third partition plate. The three partition plates 20 are arranged along the first direction to divide the accommodation cavity into four installation cavities 12 arranged along the first direction, which are successively a first installation cavity, a second installation cavity, a third installation cavity and a fourth installation cavity.

[0058] The housing 10 includes a first side plate 151 and a second side plate 152. The first side plate 151 and the second side plate 152 are two opposite side walls of the accommodation cavity along the first direction. The first side plate 151 defines one side wall of the first installation cavity, and the second side plate 152 defines one side wall of the fourth installation cavity.

[0059] One exhaust passage 51 is provided on the first side plate 151. The exhaust passage 51 on the first side plate 151 is communicated with the first installation cavity. The gas generated by the battery cell 30 in the first installation cavity can flow along the exhaust passage 51 on the first side plate 151 towards the first explosion-proof valve.

[0060] One exhaust passage 51 is provided on the first partition plate. The exhaust passage 51 on the first partition plate is communicated with the second installation cavity. The gas generated by the battery cell 30 in the second installation cavity can flow along the exhaust passage 51 on the first partition plate towards the first explosion-proof valve.

[0061] One exhaust passage 51 is provided on the second partition plate. The exhaust passage 51 on the second partition plate is communicated with the third installation cavity. The gas generated by the battery cell 30 in the third installation cavity can flow along the exhaust passage 51 on the second partition plate towards the first explosion-proof valve.

[0062] One exhaust passage 51 is provided on the third partition plate, and one exhaust passage 51 is provided on the second side plate 152. The exhaust passage 51 on the third partition plate is communicated with the fourth installation cavity, and the exhaust passage 51 on the second side plate 152 is communicated with the fourth installation cavity. The gas generated by the battery cell 30 in the fourth installation cavity can flow along the exhaust passage 51 on the third partition plate and the exhaust passage 51 on the second side plate 152 towards the first explosion-proof valve.

[0063] Among them, the housing assembly may also include one partition plate 20, two partition plates 20, four partition plates 20 or multiple partition plates 20, which will not be elaborated here.

[0064] In some embodiments, as Figure 2 , Figure 5 shown, a first through hole 13 is provided on the first side plate 151, and the first explosion-proof valve is arranged at the first through hole 13. When the air pressure in the battery pack 1 is greater than the first preset air pressure, the gas in the battery pack 1 can break through the first explosion-proof valve and flow to the outside from the first through hole 13, so as to reduce the air pressure in the battery pack 1 and prevent the battery pack 1 from exploding.

[0065] In some embodiments, the second open end 112 is located on one side in the length direction of the partition plate 20, and the exhaust passage 51 extends along the length direction of the partition plate 20 and / or the housing 10, so that the gas generated at the battery cell 30 can flow along the exhaust passage 51 towards the second open end 112. Furthermore, when the pressure in the battery pack 1 exceeds the first preset air pressure, the gas can break through the first explosion-proof valve to be quickly discharged, so as to release the gas in the battery pack 1, reduce the pressure in the battery pack 1, and prevent the battery pack 1 from bursting or exploding.

[0066] In some specific embodiments of the present utility model, the partition plate 20 is provided with an exhaust passage 51, and the second explosion-proof valve of each battery cell 30 is arranged adjacent to or facing the exhaust passage 51, so that when the gas in the battery cell 30 breaks through the second explosion-proof valve, it can quickly or directly enter the exhaust passage 51 and flow towards the first explosion-proof valve along the exhaust passage 51.

[0067] Among them, during the charging and discharging process of the battery cell 30, gas will be generated in the battery cell 30. When the air pressure in the battery cell 30 is higher than the second preset air pressure, the air pressure in the battery cell 30 will push open the second explosion-proof valve. At this time, the gas in the battery cell 30 will flow into the installation cavity 12, and the second explosion-proof valve of each battery cell 30 is arranged adjacent to or facing the exhaust passage 51, so that when the gas in the battery cell 30 breaks through the second explosion-proof valve, it can quickly or directly enter the exhaust passage 51 and flow towards the first explosion-proof valve along the exhaust passage 51. When the air pressure in the battery pack 1 is higher than the first preset air pressure, the gas in the battery pack 1 can be quickly discharged to reduce the air pressure in the battery pack 1 and prevent the battery pack 1 from exploding.

[0068] In some specific embodiments of the present utility model, as Figure 4 , Figure 5 shown, the exhaust passage 51 penetrates through the partition plate 20 in the length direction of the partition plate 20, so that the gas in the installation cavity 12 can directly enter the exhaust passage 51, which is convenient for improving the efficiency of the gas in the installation cavity 12 entering the exhaust passage 51, and further improving the efficiency of the battery pack 1 in reducing pressure and reducing the possibility of the battery pack 1 exploding.

[0069] In some embodiments, as Figure 4 shown, the length direction of the partition plate 20 extends along the second direction, the second direction is perpendicular to the first direction, the second open end 112 is located on one side of the length direction of the partition plate 20, so that the exhaust passage 51 penetrates the partition plate 20 in the length direction of the partition plate 20, so that the gas in the area of the installation cavity 12 that is far from the second open end 112 can also flow along the exhaust passage 51 to the second open end 112, so that when the air pressure in the battery pack 1 is greater than the first preset air pressure, the gas can break through the first explosion-proof valve to release the air pressure in the battery pack 1.

[0070] In some embodiments of the present utility model, as Figure 5 shown, the partition plate 20 and / or the side wall of the accommodating cavity define a cavity 52, the side of the cavity 52 facing the first explosion-proof valve has a third open end 521, the exhaust passage 51 is communicated with the cavity 52, and the gas in the installation cavity 12 can enter the cavity 52 from the exhaust passage 51 and flow along the cavity 52 to the vicinity of the first explosion-proof valve from the third open end 521.

[0071] Among them, by providing the cavity 52, space can be reserved for the flow of gas. In this way, when the air in the installation cavity 12 flows towards the first explosion-proof valve, the resistance suffered by the gas during the flow can be reduced, so that the gas can smoothly flow to the vicinity of the first explosion-proof valve. When the air pressure in the battery pack 1 is greater than the first preset air pressure, the gas can smoothly break through the first explosion-proof valve to reduce the air pressure in the battery pack 1 and prevent the battery pack 1 from exploding.

[0072] In addition, by providing the cavity 52, it is convenient to increase the strength of the partition plate 20 and / or the side wall of the accommodating cavity, so that the partition plate 20 and / or the side wall of the accommodating cavity can bear the expansion force of the battery cell 30. At the same time, the cavity can reserve space for the deformation of the battery cell 30.

[0073] In some embodiments of the present utility model, as Figure 4 、 Figure 5 shown, the accommodating cavity has a placement cavity 14 located on one side of the partition plate 20. The placement cavity 14 is used to place the power distribution part 35 electrically connected to the battery cell 30. The power distribution part 35 is used to ensure the transmission of the power of the battery pack 1 and realize the transmission of power and signals between the battery pack 1 and each external electrical equipment power supply.

[0074] In some embodiments, a high-voltage connection part and a low-voltage connection part are provided on one side of the plurality of battery cells 30 facing the second open end 112 to connect the plurality of battery cells 30 in series.

[0075] In some alternative embodiments of the present utility model, a part of the power distribution member 35 is adapted to be exposed from the second open opening 112 to the outside of the housing 10, so as to facilitate the gripping of the power distribution member 35, and further facilitate the installation or disassembly of the power distribution member 35.

[0076] In some specific embodiments of the present utility model, the sealing cover 40 covers the placement cavity 14 to protect the part of the power distribution member 35 exposed to the outside of the housing 10.

[0077] In some alternative embodiments of the present utility model, the housing 10 includes a first side plate 151, a second side plate 152, a bottom plate and a rear plate that are oppositely arranged in the first direction. The first side plate 151 and the second side plate 152 are oppositely arranged in the first direction. The bottom plate is opposite to the first open opening 111. The bottom plate defines the bottom wall of the accommodating cavity. The first side plate 151, the second side plate 152 and the rear plate define the side walls of the accommodating cavity. The rear plate and the second open opening 112 are oppositely arranged in the second direction.

[0078] Wherein, the bottom plate, the first side plate 151, the second side plate 152 and the partition plate 20 are integrally formed. The rear plate is fixed to one side of the first side plate 151, the second side plate 152 and the plurality of partition plates 20 in the length direction, so that the housing 10 has strong structural strength and enables the housing 10 to withstand the expansion force of the battery cell 30.

[0079] In some examples, the battery cell 30 is a solid-state battery. The solid-state battery has a large expansion force, so that the bottom plate, the first side plate 151, the second side plate 152 and the partition plate 20 are integrally formed to be able to withstand the expansion force of the solid-state battery.

[0080] In some examples, the bottom plate, the first side plate 151, the second side plate 152 and the plurality of partition plates 20 are made of a metal material, such as aluminum.

[0081] In some examples, the thickness of the first side plate 151, the second side plate 152 and the partition plate 20 is 1 mm to 2 mm, so that the first side plate 151, the second side plate 152 and the partition plate 20 have strong structural strength to be able to withstand the expansion force of the battery cell 30.

[0082] In some examples, the rear plate is fixed to one side of the first side plate 151, the second side plate 152 and the plurality of partition plates 20 in the length direction by one or more of gluing, welding and screwing.

[0083] In some embodiments of the present utility model, as Figure 3 shown, the sealing cover 40 includes a first cover body portion 41. The first cover body portion 41 is covered on the first open opening 111 to close the first open opening 111.

[0084] In some embodiments, the first cover portion 41 is adhesively fixed between the edge of the first open opening 111 and the partition plate 20 to fix the first cover portion 41 at the first open opening 111, enabling the first cover portion 41 to close the first open opening 111.

[0085] In some examples, the first open opening 111 is an open opening above the accommodation cavity (it should be understood that the above direction definition is only for facilitating the description of the drawings and will not limit the actual installation position and direction of the housing assembly). The first cover portion 41 is disposed above the partition plate 20 and the accommodation cavity.

[0086] The housing 10 includes a first side plate 151, a second side plate 152, a bottom plate, and a rear plate. The bottom plate defines the bottom wall of the accommodation cavity. The first side plate 151, the second side plate 152, and the rear plate define the accommodation cavity. The first side plate 151 and the second side plate 152 are disposed opposite to each other in the first direction. The rear plate and the second open opening 112 are disposed opposite to each other in the second direction. The bottom plate and the first open opening 111 are disposed opposite to each other in the up and down direction.

[0087] Wherein, an adhesive layer is coated above the first side plate 151, the second side plate 152, the bottom plate, and the partition plate 20. After the first cover portion 41 is disposed above the first side plate 151, the second side plate 152, the bottom plate, and the partition plate 20, the first cover portion 41 is adhesively fixed to the upper parts of the first side plate 151, the second side plate 152, the bottom plate, and the partition plate 20.

[0088] In some embodiments, the first cover portion 41 and the partition plate 20 are fixedly connected by a first fastener. The first fastener passes through the first cover portion 41 and the partition plate 20 to fix the first cover portion 41 at the first open opening 111, enabling the first cover portion 41 to close the first open opening 111.

[0089] In some examples, as Figure 3 , Figure 5 shown, a first fixing hole 21 is provided above the partition plate 20, a second fixing hole 411 is provided on the first cover portion 41, and the first fastener passes through the first fixing hole 21 and the second fixing hole 411 to fix the first cover portion 41 above the partition plate 20, enabling the first cover portion 41 to close the first open opening 111.

[0090] In some alternative embodiments of the present utility model, as Figure 3 shown, the sealing cover 40 is provided with a second cover portion 42. The second cover portion 42 seals the second open opening 112. The second cover portion 42 and the edge of the second open opening 112 are adhesively connected to fix the second cover portion 42 on the housing 10, enabling the second cover portion 42 to close the second open opening 112.

[0091] In some embodiments, as Figure 5As shown, the accommodation cavity has a placement cavity 14 located on one side of the partition plate 20. The placement cavity 14 is used to place the power distribution unit 35. A part of the power distribution component 35 is exposed from the second open opening 112 to the outside of the housing 10. The second cover part 42 defines a first chamber. When the second cover part 42 is covered on the second open opening 112, the part of the power distribution component 35 that is exposed outside the housing 10 is located in the first chamber to protect the exposed part of the power distribution component 35.

[0092] In some specific embodiments of the present invention, such as Figure 5 As shown, the housing 10 includes a first side plate 151 and a second side plate 152, and a bottom plate opposite to the first open opening 111. The first side plate 151 and the second side plate 152 are opposite to each other in the first direction. The side of the first side plate 151 facing the second open opening 112 has a first mating surface 141, and the side of the second side plate 152 facing the second open opening 112 has a second mating surface 142. Both the first mating surface 141 and the second mating surface 142 are in contact with the second cover part 42 to achieve the adhesive connection between the second cover part 42 and the first mating surface 141 and the second mating surface 142.

[0093] In some embodiments, the second cover part 42 has a third side plate 421 and a fourth side plate. The third side plate 421 and the fourth side plate are arranged opposite to each other in the first direction. The third side plate 421 and the fourth side plate define two side walls of the first chamber opposite to each other in the first direction. The side of the third side plate 421 facing the first side plate 151 has a third mating surface, and the side of the fourth side plate facing the second side plate 152 has a fourth mating surface.

[0094] The first mating surface 141 and the third mating surface are adhesively connected, and the second mating surface 142 and the fourth mating surface are adhesively connected to fix the first side plate 151 and the third side plate 421 together, and fix the second side plate 152 and the fourth side plate together, thereby fixing the second cover part 42 on the housing 10 so that the second cover part 42 can close the second open opening 112

[0095] In some embodiments, the first mating surface 141 and the second mating surface 142 extend obliquely towards the second cover part 42 along the direction from the second open opening 112 to the bottom plate, which is convenient for increasing the mating area between the first mating surface 141 and the second mating surface 142 and the second cover part 42.

[0096] In some examples, such as Figure 5As shown, the first open opening 112 is located above the housing 10. The first mating surface 141 extends downward from top to bottom towards the direction close to the second open opening 112. The second mating surface 142 is parallel to the first mating surface 141, and the third mating surface is parallel to the first mating surface 141, so that the third mating surface can be attached to the first mating surface 141, and then the third mating surface and the first mating surface 141 can be adhesively connected together. The fourth mating surface is parallel to the second mating surface 142, so that the fourth mating surface can be attached to the second mating surface 142, and then the fourth mating surface and the second mating surface 142 can be adhesively connected together.

[0097] In addition, when the power distribution component 35 is arranged in the placement cavity 14 in this way, the part of the power distribution component 35 exposed outside the housing 10 can be operated from one side in the length direction of the first side plate 151 and the second side plate 152, so as to facilitate the installation or disassembly of the power distribution component 35.

[0098] In some other embodiments, the first mating surface 141 and the second mating surface 142 extend towards the arc surface of the second cover body part 42 along the direction from the first open opening 112 to the bottom plate. This is convenient for increasing the mating area between the first mating surface 141 and the second mating surface 142 and the second cover body part 42. At the same time, after the second cover body part 42 is removed, it can avoid the edges of the first mating surface 141 and the second mating surface 142 from scratching the operator.

[0099] In some examples, the first open opening 112 is located above the housing 10. The first mating surface 141 extends in an arc shape downward from top to bottom towards the direction close to the second open opening 112. The second mating surface 142 extends in an arc shape downward from top to bottom towards the direction close to the second open opening 112. The third mating surface is adapted to the shape of the first mating surface 141, so that the third mating surface can be attached to the first mating surface 141, and then the third mating surface and the first mating surface 141 can be adhesively connected together. The fourth mating surface is adapted to the shape of the second mating surface 142, so that the fourth mating surface can be attached to the second mating surface 142, and then the fourth mating surface and the second mating surface 142 can be adhesively connected together.

[0100] In addition, when the power distribution component 35 is arranged in the placement cavity 14 in this way, the part of the power distribution component 35 exposed outside the housing 10 can be operated from one side in the length direction of the first side plate 151 and the second side plate 152, so as to facilitate the installation or disassembly of the power distribution component 35.

[0101] In some embodiments, the sealing cover 40 is made of a metal material. By fixing the first sealing cover 40 at the first open opening 111 and fixing the second sealing cover 40 at the second open opening 112, the connection strength between the housing 10 and the sealing cover 40 is enhanced, so that the housing 10 and the sealing cover 40 can jointly bear the expansion force of the battery cell 30.

[0102] The battery pack according to an embodiment of the present invention will be described below. The battery pack according to an embodiment of the present invention includes a housing assembly according to the above embodiment of the present invention.

[0103] For the battery pack according to an embodiment of the present invention, by using the housing assembly according to the above embodiment of the present invention, the battery cell 30 can be installed into the installation cavity 12 from one of the first opening 111 and the second opening 112, and the position of the battery cell 30 can be observed and adjusted from the other of the first opening 111 and the second opening 112. In this way, when installing the battery cell 30, the possibility of the battery cell 30 being installed obliquely can be reduced, which is convenient for improving the uniformity between the battery cell 30 and the wall of the installation cavity 12, improving the uniformity of the expansion force of the housing 10 restraining the battery cell 30, and further improving the service life of the battery pack 1.

[0104] The electrical equipment according to an embodiment of the present invention will be described below. The electrical equipment according to an embodiment of the present invention includes the battery pack 1 according to the above embodiment of the present invention.

[0105] For the electrical equipment according to an embodiment of the present invention, by using the battery pack according to the above embodiment of the present invention, the battery cell 30 can be installed into the installation cavity 12 from one of the first opening 111 and the second opening 112, and the position of the battery cell 30 can be observed and adjusted from the other of the first opening 111 and the second opening 112. In this way, when installing the battery cell 30, the possibility of the battery cell 30 being installed obliquely can be reduced, which is convenient for improving the uniformity between the battery cell 30 and the wall of the installation cavity 12, improving the uniformity of the expansion force of the housing 10 restraining the battery cell 30, and further improving the service life of the battery pack 1.

[0106] The other configurations and operations of the electrical equipment according to an embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0107] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween.

[0108] In the description of the present utility model, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature.

[0109] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0110] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0111] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pack housing assembly, characterized in that: include: A housing (10), the housing (10) defining a receiving cavity, the receiving cavity having a first open opening (111) and a second open opening (112) adjacent to each other, the receiving cavity being used to receive at least one battery cell (30); A sealing cover (40) is provided on the housing (10) to seal the first opening (111) and the second opening (112).

2. The housing assembly of the battery pack according to claim 1, characterized in that: It also includes at least one partition plate (20), the partition plate (20) being arranged on the housing (10) to divide the accommodating cavity into a plurality of mounting cavities (12) arranged along a first direction, the mounting cavities (12) being used to accommodate the battery cells (30).

3. The housing assembly of the battery pack according to claim 2, characterized in that: The housing (10) is provided with a first explosion-proof valve, and the first explosion-proof valve is arranged on a side of the partition plate (20) close to the second open port (112).

4. The housing assembly of the battery pack according to claim 3, characterized in that: The partition plate (20) and / or the side wall of the shell (10) are provided with an exhaust channel (51), each installation cavity (12) is correspondingly provided with at least one exhaust channel (51), and the air outlet of the exhaust channel (51) is arranged adjacent to the first explosion-proof valve.

5. The housing assembly of the battery pack according to claim 4, characterized in that: The partition plate (20) is provided with an exhaust passage (51), and the second explosion-proof valve of each battery cell (30) is arranged adjacent to or facing the exhaust passage (51).

6. The housing assembly of the battery pack according to claim 5, characterized in that: The exhaust passage (51) penetrates the partition plate (20) in the length direction of the partition plate (20).

7. The housing assembly of the battery pack according to claim 4, characterized in that: The partition plate (20) and / or the side wall of the accommodating cavity define a cavity (52), the cavity (52) has a third open opening (521) on the side facing the first explosion-proof valve, and the exhaust passage (51) is in communication with the cavity (52).

8. The housing assembly of the battery pack according to claim 2, characterized in that: The accommodating cavity has a placement cavity (14) located on one side of the partition plate (20); The placement cavity (14) is used to place a distribution component (35) electrically connected to the battery cell (30).

9. The housing assembly of the battery pack according to claim 8, characterized in that: A portion of the power distribution component (35) is suitable for being exposed outside the housing (10) from the second open opening (112).

10. The housing assembly of the battery pack according to claim 9, characterized in that: The sealing cover (40) covers the placement cavity (14).

11. The housing assembly of the battery pack according to claim 2, characterized in that: The housing (10) comprises: A first side plate (151) and a second side plate (152) opposite to each other along the first direction; a bottom plate opposite to the first opening (111), Wherein, the first side plate (151), the second side plate (152), the bottom plate and the partition plate (20) are integrally formed.

12. The housing assembly of the battery pack according to any one of claims 2 to 11, characterized in that: The sealing cover (40) comprises a first cover body (41), wherein the first cover body (41) is arranged to cover the first opening (111); The first cover portion (41) is glued and fixed to the edge of the first opening (111) and the partition plate (20); And\or, the first cover body (41) and the partition plate (20) are fixedly connected by a first fastener.

13. The housing assembly of the battery pack according to claim 12, characterized in that: The sealing cover (40) is provided with a second cover body (42), the second cover body (42) covers the second opening (112), and the edges of the second cover body (42) and the second opening (112) are glued together.

14. The housing assembly of the battery pack according to claim 13, characterized in that: The housing (10) comprises a first side plate (151) and a second side plate (152) opposite to each other along the first direction, and a bottom plate opposite to the first open opening (111). The first side plate (151) has a first mating surface (141) on a side facing the second open opening (112), and the second side plate (152) has a second mating surface (142) on a side facing the second open opening (112), and the first mating surface (141) and the second mating surface (142) are both in contact with the second cover portion (42). Wherein, the first mating surface (141) and the second mating surface (142) extend obliquely along the direction from the first opening (111) to the base plate toward the second cover body portion (42); or, the first mating surface (141) and the second mating surface (142) extend along the direction from the first opening (111) to the base plate toward the arc surface of the second cover body portion (42).

15. A battery pack, characterized in that: include: The housing assembly of the battery pack according to any one of claims 1 to 14; At least one battery cell, wherein the battery cell is a solid-state battery.

16. An electrical device comprising the battery pack (1) according to claim 15.

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