A battery box and an electric device with the same

Abstract

The application provides a battery box and a power utilization device with the same. The battery box comprises a first shell, a second shell, a partition, and a mounting cavity. The second shell is opposite to the first shell and encloses the mounting cavity. The partition is located in the mounting cavity. In a first direction, the mounting cavity has a bottom wall at the first shell, and a first gap is formed between the partition and the bottom wall. At least two fixed baffles are arranged on a side of the partition away from the bottom wall. In a direction perpendicular to the first direction, the at least two fixed baffles are spaced apart, and two adjacent fixed baffles are used for accommodating a battery cell. The first direction is the direction in which the first shell and the second shell are opposite to each other. The first gap can provide a space for deformation of the partition. When the battery box is subjected to an impact force, the partition can deform to buffer the impact force, so that the battery cell in the mounting cavity is not affected by the external impact force, and the protection performance of the battery box on the battery cell can be improved.

Description

Technical Field

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

[0002] With the development of new energy vehicle technology, the battery system, as the heart component of new energy vehicles, has increasingly higher requirements in terms of safety and range performance.

[0003] In traditional battery systems, cell integration typically involves encapsulating cells into battery modules using external structural components, and then integrating these modules into the battery housing. Consequently, traditionally designed battery systems are complex, require a wide variety and large number of components, and have low system integration. As the market demands increasingly higher energy density, capacity, and safety from battery systems, traditional cell integration methods can no longer meet market needs.

[0004] In pursuit of higher energy density, more and more battery cells are being integrated using a module-less approach, which means that the cells are directly integrated into the battery housing. This has led to increasingly higher requirements for the protection performance of the battery housing. Utility Model Content

[0005] This application provides a battery box and an electrical device having the battery box. By providing an isolation member in a first cavity and forming a first gap between the isolation member and the bottom wall, the isolation member can undergo a certain deformation through the first gap, thereby buffering the impact force from the outside and improving the protection performance of the battery box for the battery cell.

[0006] In a first aspect, embodiments of this application provide a battery housing, including...

[0007] First shell;

[0008] A second housing mates with the first housing and forms an installation cavity;

[0009] An isolator is located within the mounting cavity; along a first direction, the mounting cavity has a bottom wall located at the first housing, and a first gap is formed between the isolator and the bottom wall; at least two fixed baffles are provided on the side of the isolator away from the bottom wall, and at least two fixed baffles are spaced apart in a direction perpendicular to the first direction, with the space between two adjacent fixed baffles used to accommodate a battery cell; the first direction is the mating direction of the first housing and the second housing.

[0010] In one possible implementation, perpendicular to the first direction, the spacer has a first side and a second side that are positioned opposite each other;

[0011] Both the first side and the second side extend to the bottom wall through the first gap and are connected to the bottom wall respectively.

[0012] In one possible implementation, a support portion is provided at the bottom wall, the support portion protruding from the bottom wall and abutting against the isolation member through the first gap.

[0013] In one possible implementation, the support includes a first support block, which is positioned between two adjacent fixed baffles along the first direction.

[0014] In one possible implementation, the support includes a second support block, the position of which corresponds to the position of the fixed baffle along the first direction.

[0015] In one possible implementation, the mounting cavity is provided with at least one support member, which is connected to at least one of the circumferential sidewall and the bottom wall of the mounting cavity.

[0016] In one possible implementation, the support intersects with at least one of the fixed baffles.

[0017] In one possible implementation, at least one of the spacer and the support is provided with a channel that communicates with the first gap.

[0018] In one possible implementation, the channel is located on at least one side of the isolator perpendicular to the first direction.

[0019] Secondly, embodiments of this application provide an electrical appliance, including,

[0020] Equipment body;

[0021] Battery housing;

[0022] The battery housing is mounted on the device body using fasteners.

[0023] This application provides a battery housing and an electrical device having the battery housing. By fixing an isolation member in a first cavity and forming a first gap between the isolation member and the bottom wall, the first gap can provide space for the isolation member to deform. When the battery housing is subjected to external impact, the isolation member can deform to a certain extent through the first gap, thereby buffering the impact from the outside and preventing the battery cells in the mounting cavity from being affected by external impact. This can better improve the protective performance of the battery housing for the battery cells. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 This is a schematic diagram of the battery housing provided in some embodiments of this application;

[0026] Figure 2 This is a schematic diagram of a battery housing with the second housing hidden, provided in some embodiments of this application;

[0027] Figure 3 This is a schematic diagram of a battery housing without the second housing and separator provided in some embodiments of this application;

[0028] Figure 4 A schematic diagram of the second housing provided for some embodiments of this application;

[0029] Figure 5 A schematic diagram of the isolation component provided in some embodiments of this application;

[0030] Figure 6 This is a schematic diagram of the isolation member welded to the first cavity in some embodiments of this application, wherein the dashed line represents the inner wall of the first cavity.

[0031] Figure label:

[0032] 10. Battery housing; 11. Fasteners;

[0033] 100. First shell; 110. First cavity; 111. Bottom wall;

[0034] 200. Second housing; 210. Second cavity; 220. Reinforcing part;

[0035] 300, Isolating element; 310, First gap; 320, Fixed baffle; 330, First side; 340, Second side; 350, Third side; 360, Fourth side; 370, Second gap; 380, Third gap;

[0036] 400. Support section; 410. First support block; 420. Second support block;

[0037] 500. Support components;

[0038] 600, Channel.

[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0041] In traditional battery systems, cell integration typically involves encapsulating cells into battery modules using external structural components, and then integrating these modules into the battery housing. Consequently, traditionally designed battery systems are complex, require a wide variety and large number of components, and have low system integration. As the market demands increasingly higher energy density, capacity, and safety from battery systems, traditional cell integration methods can no longer meet market needs.

[0042] In pursuit of higher energy density, more and more battery cells are being integrated using a module-less approach, which means that the cells are directly integrated into the battery housing. This has led to increasingly higher requirements for the protection performance of the battery housing.

[0043] This application provides a battery housing and an electrical device having the battery housing. By fixing an isolation member in a first cavity and forming a first gap between the isolation member and the bottom wall, the first gap can provide space for the isolation member to deform. When the battery housing is subjected to external impact, the isolation member can deform to a certain extent through the first gap, thereby buffering the impact from the outside and preventing the battery cells in the mounting cavity from being affected by external impact. This can better improve the protective performance of the battery housing for the battery cells.

[0044] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0045] Firstly, see [the following] Figure 1 , Figure 2 and Figure 3As shown, this application embodiment provides a battery housing 10, which includes a first housing 100 and a second housing 200. The first housing 100 and the second housing 200 can be fitted together. A first cavity 110 is provided on the side of the first housing 100 near the second housing 200. When the first housing 100 and the second housing 200 are fitted together, the second housing 200 can cover the opening of the first cavity 110 and seal the first cavity 110, so that the first cavity 110 can form a mounting cavity for accommodating battery cells. Further, in some embodiments, see... Figure 4 As shown, a second cavity 210 can be provided on the side of the second housing 200 close to the first housing 100. When the first housing 100 and the second housing 200 are engaged, the first cavity 110 and the second cavity 210 can together form an installation cavity.

[0046] In the embodiments of this application, see Figure 1 , Figure 2 and Figure 3 As shown, along the first direction X, the mounting cavity has a bottom wall 111 located at the first recess 110, wherein the first direction X is the engagement direction of the first housing 100 and the second housing 200. See also Figure 2 , Figure 5 and Figure 6 As shown, a spacer 300 is fixedly disposed in the first cavity 110, and a first gap 310 is formed between the spacer 300 and the bottom wall 111. A fixed baffle 320 is disposed on the side of the spacer 300 away from the bottom wall 111, and there are at least two fixed baffles 320, which are spaced apart in a direction perpendicular to the first direction X.

[0047] In a battery housing 10 according to an embodiment of this application, in practical application, the side of the separator 300 away from the bottom wall 111 is used to support the battery cells. The number of battery cells can be one or more, and one or more battery cells are respectively housed between two adjacent fixed baffles 320. The two adjacent fixed baffles 320 cooperate to clamp the battery cells, thereby fixing the battery cells.

[0048] Furthermore, two adjacent fixed baffles 320 can be parallel to each other or intersect as extended lines; see [link / reference] Figure 2 , Figure 5 and Figure 6 As shown, when two adjacent fixed baffles 320 are parallel to each other, the size of multiple cells located between the two adjacent fixed baffles 320 can be consistent; when the extended lines of two adjacent fixed baffles 320 intersect, the size of multiple cells located between the two adjacent fixed baffles 320 is different.

[0049] It is worth mentioning that, since there is a first gap 310 between the separator 300 and the bottom wall 111 in this embodiment, the first gap 310 can provide space for the separator 300 to deform. When the battery box 10 is subjected to external impact, the separator 300 can deform to a certain extent through the first gap 310, thereby buffering the impact from the outside and preventing the battery cell in the mounting cavity from being affected by the external impact. This can better improve the protection performance of the battery box 10 for the battery cell.

[0050] Furthermore, since the first gap 310 between the separator 300 and the bottom wall 111 can provide a certain space for deformation of the separator 300, when the battery cell is placed on the separator 300 and the first housing 100 and the second housing 200 are assembled together, the separator 300 and the second housing 200 can form a clamping effect on the battery cell, thereby fixing the battery cell in the mounting cavity, improving the stability of the battery cell placed in the mounting cavity, and thus improving the protection performance of the battery box 10 for the battery cell in this embodiment.

[0051] In some implementations, see Figure 2 , Figure 5 and Figure 6 As shown, the isolation member 300 has a first side 330 and a second side 340, and the first side 330 and the second side 340 are positioned opposite each other in a direction perpendicular to the first direction X. In this embodiment, the isolation member 300 and the first housing 100 are manufactured separately. When the isolation member 300 is placed in the first cavity 110, the first side 330 and the second side 340 of the isolation member 300 are fixed to the bottom wall 111, thereby completing the installation of the isolation member 300.

[0052] For example, see Figure 2 and Figure 5 As shown in the embodiment of this application, the spacer 300 is generally square in the first direction X, so that the spacer 300 has four sides perpendicular to the first direction X, and the four sides are a first side 330, a second side 340, a third side 350 and a fourth side 360, wherein the first side 330 and the second side 340 are opposite each other in the first direction X, and the third side 350 and the fourth side 360 ​​are opposite each other in the first direction X. When the spacer 300 is placed in the first cavity 110, the first side 330 and the second side 340 can be fixed to the bottom wall 111 by welding, and the third side 350 and the fourth side 360 ​​can be fixed to the inner wall of the first cavity 110 by welding, thereby realizing the installation and use of the spacer 300.

[0053] It is understood that the first side 330 and the second side 340 can be fixedly connected to the bottom wall 111 by welding, bolting, bonding or snapping, and there are no special limitations on this.

[0054] Furthermore, since there is a first gap 310 between the spacer 300 and the bottom wall 111, and the first side 330 and the second side 340 are connected to the bottom wall 111, the first side 330 and the second side 340 extend to the bottom wall 111 through the first gap 310 and are connected to the bottom wall 111.

[0055] In this embodiment, after the separator 300 is fixedly installed in the first cavity 110, an electrophoretic solution is injected into the first gap 310 between the separator 300 and the bottom wall 111, so that the inner wall of the first gap 310 is electrophoretically treated, which can better improve the corrosion resistance of the inner wall of the first gap 310, thereby improving the structural stability of the separator 300 and the first housing 100, and improving the protection effect of the entire battery box 10 on the battery cell.

[0056] In some implementations, see Figure 2 and Figure 3 As shown, a support portion 400 is provided on the bottom wall 111, and the support portion 400 protrudes from the bottom wall 111 and extends toward the second housing 200. By providing the support portion 400 on the bottom wall 111, the structural strength of the first housing 100 can be improved, so that the first housing 100 can stably protect the battery cell.

[0057] In this embodiment, the support portion 400 disposed on the bottom wall 111 extends toward the second housing 200 and abuts against the insulating member 300 through the first gap 310. It is understood that, due to the weight of the battery cell, and the fact that the insulating member 300 is only connected to the bottom wall 111 via the first side 330 and the second side 340, and to the inner wall of the first cavity 110 via the third side 350 and the fourth side 360, the middle position of the insulating member 300 is relatively weak. When the battery cell is placed on the insulating member 300, over a long period, deformation will occur at the middle position of the insulating member 300 toward the bottom wall 111, affecting the structural strength of the insulating member 300 and reducing its effectiveness in buffering external impacts. In this embodiment, the support portion 400 on the bottom wall 111 abuts against the isolator 300, which can better support the isolator 300 and prevent the middle position of the isolator 300 from deforming and collapsing in the direction of the bottom wall 111. This can improve the load-bearing capacity of the isolator 300 and improve the stability of the battery cell in the mounting cavity.

[0058] Furthermore, in this embodiment, the support part 400 is formed by stamping the first housing 100. In practical applications, the support part 400 and the first housing 100 can be manufactured separately, and the support part 400 can be fixed to the bottom wall 111 by welding, bonding or snap-fitting, etc., without any particular limitation.

[0059] In some implementations, see Figure 3 As shown, the support portion 400 provided on the bottom wall 111 includes a first support block 410, and along the first direction X, the position of the first support block 410 is located between two adjacent fixed baffles 320.

[0060] Since one or more battery cells are placed between two adjacent fixed baffles 320, the spacer 300 located between the two adjacent fixed baffles 320 bears most of the load, which makes the spacer 300 more prone to deformation and collapse. In this embodiment, by positioning the first support block 410 between the two adjacent fixed baffles 320, the first support block 410 can support the spacer 300 located between the two adjacent fixed baffles 320, preventing the spacer 300 located between the two adjacent fixed baffles 320 from deforming and collapsing towards the bottom wall 111. This improves the load-bearing capacity of the spacer 300 located between the two adjacent fixed baffles 320 and enhances the stability of the battery cells housed in the mounting cavity.

[0061] It is understandable that when there are two fixed baffles 320, the number of first support blocks 410 can be one or more; when there are more than two fixed baffles 320, the number of first support blocks 410 is multiple, so that each pair of adjacent fixed baffles 320 can correspond to at least one first support block 410.

[0062] In some implementations, see Figure 2 and Figure 3 As shown, the support portion 400 provided on the bottom wall 111 includes a second support block 420, and the position of the second support block 420 corresponds to the position of the fixed baffle 320 along the first direction X.

[0063] In this embodiment, the second support block 420 is positioned corresponding to the fixed baffle 320, enabling the second support block 420 to support the fixed baffle 320 and thus improve the structural strength of the fixed baffle 320. It is understood that when one or more battery cells are housed between two adjacent fixed baffles 320, the battery cells will expand during operation, causing them to compress the fixed baffles 320. Because the second support block 420 supports the fixed baffles 320, the structural strength of the fixed baffles 320 is increased, making it less prone to significant bending under the compression of the battery cells. This improves the positional stability of the fixed baffles 320 and, correspondingly, the positional stability of the battery cells.

[0064] It is understandable that if there are at least two fixed baffles 320, then there are also at least two second support blocks 420, so that each fixed baffle 320 can correspond to at least one second support block 420, thereby improving the positional stability of the fixed baffles 320 and the battery cell, and improving the protection effect on the battery cell.

[0065] In some implementations, see Figure 2 and Figure 3 As shown, at least one support member 500 is provided in the mounting cavity. The support member 500 can be connected to at least one of the circumferential side wall and bottom wall 111 of the mounting cavity, so that the support member 500 can support the battery box 10, thereby improving the structural strength of the battery box 10 and thus improving the protection effect of the battery box 10 on the battery cell.

[0066] Exemplarily, at least one support member 500 is provided in the first cavity 110, and the support member 500 is connected to at least one of the circumferential sidewall and the bottom wall 111 of the first cavity 110. Further, in the embodiments of this application, see... Figure 2 and Figure 3 As shown, the support member 500 is connected to both the circumferential sidewall and the bottom wall 111 of the first cavity 110, so that the support member 500 can support the first housing 100, thereby improving the structural strength of the first housing 100 and thus improving the protection effect of the first housing 100 on the battery cell.

[0067] In this embodiment, the support member 500 and the first housing 100 are manufactured separately, and the support member 500 is fixed to the first housing 100 by welding.

[0068] In some embodiments, the support member 500 intersects with at least one fixed baffle 320. This intersection allows the support member 500 to support the fixed baffle 320, thereby improving the structural strength of the fixed baffle 320 and enhancing the protection of the battery cell. The support member 500 and the fixed baffle 320 can form any angle; this embodiment does not impose any particular limitation on this.

[0069] For example, see Figure 2 As shown in the embodiment of this application, the support member 500 intersects with all the fixed baffles 320, so that each support member 500 can support all the fixed baffles 320, thereby improving the structural strength of all the fixed baffles 320 and improving the protection effect on the battery cell.

[0070] Furthermore, to facilitate the placement of the battery cell between two adjacent fixed baffles 320, see, for example, [reference needed]. Figure 2 As shown in the embodiment of this application, all the fixed baffles 320 are kept parallel to each other, and the support member 500 is perpendicular to the fixed baffles 320.

[0071] It is understandable that the number of support components 500 can be set to one or more, and can be adjusted according to the needs of actual application, without any special limitation.

[0072] In some implementations, see Figure 2 and Figure 5 As shown, a channel 600 is provided on at least one of the isolation member 300 and the support member 500, and the channel 600 is connected to the first gap 310.

[0073] After the separator 300 and the support 500 are installed in the first cavity 110, and a first gap 310 is formed between the separator 300 and the bottom wall 111, the electrophoretic liquid is injected into the first gap 310 through the channel 600. This allows the inner wall of the first gap 310 to be electrophoretically treated, which can better improve the corrosion resistance of the inner wall of the first gap 310. This can improve the structural stability of the separator 300 and the first housing 100, and improve the protection effect of the entire battery box 10 on the battery cell.

[0074] It is understood that the channel 600 can be set on the isolation member 300 or on the support member 500. The channel 600 can also be set on both the isolation member 300 and the support member 500 at the same time, as long as the electrophoretic fluid can be injected into the first gap 310 through the channel 600. There are no special limitations on this.

[0075] In some embodiments, the channel 600 is disposed on the isolator 300. More specifically, the channel 600 is disposed on at least one side of the isolator 300 perpendicular to the first direction X. For example, see [link to relevant documentation]. Figure 2 and Figure 5 As shown in the embodiment of this application, a channel 600 is provided at the first side 330.

[0076] In this embodiment of the application, when the isolation member 300 is welded to the bottom wall 111 through the first side 330 and the second side 340, so that a first gap 310 is formed between the isolation member 300 and the bottom wall 111, electrophoretic liquid can be injected into the first gap 310 through the channel 600 located at the first side 330 to perform electrophoretic treatment on the inner wall of the first gap 310.

[0077] It is worth mentioning that, see Figure 2 As shown in the embodiment of this application, a portion of the second support block 420 is inserted into the channel 600, so that the second support block 420 can provide a pre-positioning function for the installation of the isolation member 300 on the bottom wall 111, and when the isolation member 300 is welded to the bottom wall 111, the second support block 420 can limit the channel 600, thereby improving the stability of the isolation member 300 welded to the bottom wall 111 and avoiding welding failure between the isolation member 300 and the bottom wall 111.

[0078] In some implementations, see Figure 6 As shown, Figure 6 The dotted line in the figure represents the inner wall of the first cavity 110. In the direction perpendicular to the first direction X, there is a second gap 370 between the first side 330 of the separator 300 and the inner wall of the first cavity 110. The first side 330 can be easily welded to the bottom wall 111 through the second gap 370.

[0079] Furthermore, in a direction perpendicular to the first direction X, there is a third gap 380 between the second side 340 of the isolation member 300 and the inner wall of the first cavity 110, through which the second side 340 can be easily welded to the bottom wall 111.

[0080] In some embodiments, the first housing 100 and the second housing 200 are bolted together to improve the stability of the connection between the first housing 100 and the second housing 200; a sealing ring is also provided between the first housing 100 and the second housing 200. When the first housing 100 and the second housing 200 are engaged, the first housing 100 and the second housing 200 can clamp the sealing ring, thereby enabling the sealing ring to seal the mounting cavity.

[0081] In some implementations, see Figures 1-3 As shown, a fastener 11 is provided on at least one of the first housing 100 and the second housing 200. The battery box 10 in this embodiment can be fixedly installed on an external device for use by means of the fastener 11.

[0082] For example, see Figures 1-3 As shown in the embodiment of this application, a fixing member 11 is provided on the first housing 100, and there are multiple fixing members 11 arranged around the first direction X on the first housing 100.

[0083] It is understood that the fastener 11 can be fixedly installed on the external equipment by means of welding, bolting, bonding or snap-fitting, and the embodiments of this application do not make any special limitations in this regard.

[0084] In some embodiments, the first housing 100, the second housing 200, the isolation member 300, and the support member 500 are all integrally formed by a stamping process, wherein the isolation member 300 and the support member 500 are installed in the first cavity 110 by welding connection.

[0085] It should be further noted that the fixed baffle 320 set on the isolation member 300 is also formed on the isolation member 300 by a stamping process.

[0086] In this embodiment, the first housing 100, the second housing 200, the isolation member 300, and the support member 500 are formed by stamping, which can better improve the dimensional accuracy and structural strength of the first housing 100, the second housing 200, the isolation member 300, and the support member 500. Furthermore, the stamping process allows the isolation member 300 and the support member 500 to be integrally formed, which can better reduce the number of parts.

[0087] In some implementations, see Figure 4 As shown, a reinforcing part 220 is provided on the inner wall of the second cavity 210 of the second housing 200. That is, the reinforcing part 220 protrudes from the inner wall of the second cavity 210. The provision of the reinforcing part 220 can improve the structural strength of the second housing 200, thereby enabling the second housing 200 to cooperate with the first housing 100 to protect the battery cell.

[0088] Furthermore, in this embodiment, the reinforcing part 220 and the second housing 200 are integrally formed. For example, see [link to relevant documentation]. Figure 1 and Figure 4 As shown, the reinforcing part 220 is formed by stamping the second housing 200.

[0089] Secondly, this application provides an electrical device including the battery housing 10 described above, which thus possesses the corresponding technical effects and advantages.

[0090] Furthermore, the electrical equipment in this application embodiment also includes a device body, wherein the device body serves as the aforementioned external device, and the battery box 10 can be fixedly mounted on the device body by means of the fastener 11 thereon.

[0091] It should be noted that the device body in this application embodiment is not limited to a vehicle. Exemplarily, a vehicle is used as the device body for description, and the battery box 10 is fixedly installed on the vehicle by a fastener 11. One or more power modules are also provided on the vehicle, and the battery cells inside the battery box 10 are electrically connected to one or more power modules.

[0092] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A battery housing, characterized in that: include, First housing (100); The second housing (200) mates with the first housing (100) and forms an installation cavity; The isolation element (300) is located within the mounting cavity; Along the first direction, the mounting cavity has a bottom wall (111) located at the first housing (100), and a first gap (310) is formed between the isolation member (300) and the bottom wall (111); the isolation member (300) is provided with at least two fixed baffles (320) on the side away from the bottom wall (111), and at least two fixed baffles (320) are spaced apart in the direction perpendicular to the first direction, and the space between two adjacent fixed baffles (320) is used to accommodate the battery cell; the first direction is the engagement direction of the first housing (100) and the second housing (200).

2. The battery housing according to claim 1, characterized in that: Perpendicular to the first direction, the spacer (300) has a first side (330) and a second side (340) that are positioned opposite each other. The first side (330) and the second side (340) both extend to the bottom wall (111) through the first gap (310) and are respectively connected to the bottom wall (111).

3. The battery housing according to claim 1 or 2, characterized in that: A support portion (400) is provided at the bottom wall (111), the support portion (400) protrudes from the bottom wall (111) and abuts against the isolation member (300) through the first gap (310).

4. The battery housing according to claim 3, characterized in that: The support (400) includes a first support block (410) located between two adjacent fixed baffles (320) along the first direction.

5. The battery housing according to claim 3, characterized in that: The support (400) includes a second support block (420), and the position of the second support block (420) corresponds to the position of the fixed baffle (320) along the first direction.

6. The battery housing according to any one of claims 1, 2, 4, and 5, characterized in that: The mounting cavity is provided with at least one support member (500), which is connected to at least one of the circumferential sidewall and the bottom wall (111) of the mounting cavity.

7. The battery housing according to claim 6, characterized in that: The support member (500) intersects with at least one of the fixed baffles (320).

8. The battery housing according to claim 7, characterized in that: At least one of the isolation member (300) and the support member (500) is provided with a channel (600) that communicates with the first gap (310).

9. The battery housing according to claim 8, characterized in that: The channel (600) is disposed on at least one side of the isolation member (300) perpendicular to the first direction.

10. An electrical appliance, characterized in that: include, Equipment body; Battery housing (10) as described in any one of claims 1-9; The battery box (10) is installed on the device body by means of a fastener (11).

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