Battery box, battery pack and electric device

Abstract

This utility model provides a battery box, a battery pack, and an electrical device. The battery box includes a frame, a cover, a mounting part, a connector, and a sealing ring. The frame has a cavity for accommodating the battery pack and an opening communicating with the cavity. The frame includes a first side beam and a second side beam connected to the first side beam. The cover is placed over the opening. The mounting part includes a first mounting groove on the surface of the first side beam facing the cover and a second mounting groove on the surface of the second side beam facing the cover, the second mounting groove communicating with the first mounting groove. The connector is disposed within the first and second mounting grooves. The sealing ring is disposed between the cover and the frame and surrounds the outer periphery of the opening, wherein the sealing ring is located on the side of the mounting part closer to the opening and / or the side farther from the opening. The technical solution of this application effectively solves the problem in related technologies where it is difficult to achieve a good sealing effect while improving the structural strength of the box.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery box, a battery pack, and an electrical device. Background Technology

[0002] In the field of battery technology, a battery includes a housing and a battery pack disposed within the housing. The housing includes multiple side beams and a cover, the side beams forming a cavity for accommodating the battery pack, and the cavity has an opening, with the cover covering the opening.

[0003] In related technologies, to enhance the structural strength of the enclosure, it is necessary to reinforce the two adjacent side beams. These beams are typically welded together to improve the reliability of the connection. However, the weld metal protrudes from the surface of the side beam facing the cover, causing the cover to be lifted when placed over the opening. This creates a gap between the cover and the enclosure, preventing the cover from fully fitting the side beam and reducing the enclosure's sealing effect.

[0004] In summary, while the relevant technologies improve the structural strength of the enclosure, they cannot simultaneously achieve a good sealing effect. Utility Model Content

[0005] The main purpose of this utility model is to provide a battery box, battery pack and power device to solve the problem in related technologies that it is difficult to achieve a good sealing effect while improving the structural strength of the box.

[0006] To achieve the above objectives, according to one aspect of the present invention, a battery housing is provided for accommodating a battery pack. The battery housing includes a frame, a cover, a mounting portion, a connector, and a sealing ring. The frame has a receiving cavity for accommodating the battery pack and an opening communicating with the receiving cavity. The frame includes a first side beam and a second side beam connected to the first side beam. The cover is disposed at the opening. The mounting portion includes a first mounting groove disposed on the surface of the first side beam facing the cover and a second mounting groove disposed on the surface of the second side beam facing the cover, the second mounting groove communicating with the first mounting groove. The connector is disposed within the first and second mounting grooves. The sealing ring is disposed between the cover and the frame and surrounds the outer periphery of the opening, wherein the sealing ring is located on the side of the mounting portion closer to the opening and / or away from the opening.

[0007] According to another aspect of the present invention, a battery pack is provided, including a battery housing and a battery pack disposed within the battery housing, wherein the battery housing is the aforementioned battery housing.

[0008] According to another aspect of the present invention, an electrical device is provided, including a battery pack, the battery pack described above.

[0009] By applying the above technical solution, the connector can connect the first side beam and the second side beam, thereby improving the reliability of the connection between the first and second side beams and enhancing the structural strength of the enclosure. Furthermore, the design of the first and second mounting grooves reduces the distance the connector protrudes from the frame surface towards the cover, thus reducing the gap between the cover and the frame when the cover is placed over the opening, thereby improving the enclosure's sealing performance. The sealing ring fills the gap between the cover and the frame, allowing for a tight seal. Moreover, placing the sealing ring on the side of the mounting portion closer to the opening and / or farther from the opening reduces interference between the mounting portion and the sealing ring, preventing gaps when the sealing ring covers the mounting portion and ensuring a tight fit between the sealing ring and the frame. It also reduces interference between the connector located within the mounting portion and the sealing ring, preventing deformation or damage to the sealing ring when lifted by the connector, further improving the sealing effect of the sealing ring. This design of the sealing ring ensures that it is not affected by the connectors or mounting parts, allowing it to maintain its sealing function and preventing external environmental factors such as moisture and dust from entering the battery box, thus protecting the battery pack from damage. In this way, while enhancing the structural strength of the box, a good sealing effect is also achieved. Therefore, the technical solution of this application effectively solves the problem in related technologies where it is difficult to simultaneously improve the structural strength of the box and maintain a good sealing effect. Attached Figure Description

[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0011] Figure 1 A three-dimensional structural diagram of the battery pack according to an embodiment of the present invention is shown when the cover and frame are separated.

[0012] Figure 2 A perspective view of the battery housing according to an embodiment of the present invention is shown, where the connecting member is not shown at the mounting portion.

[0013] Figure 3 It shows Figure 2 A top view of the connector of the battery box;

[0014] Figure 4 It shows Figure 3 A magnified view of a portion of the battery casing at point A;

[0015] Figure 5 It shows Figure 2 A partial enlarged view of another embodiment of the battery housing;

[0016] Figure 6 It shows Figure 2 A partial enlarged view of the mounting section of the battery box when the connector is not shown;

[0017] Figure 7 It shows Figure 2 The enlarged view shows a portion of the battery housing mounting section where the connectors and sealing rings are not shown.

[0018] The above figures include the following reference numerals:

[0019] 10. Frame; 11. First side beam; 12. Second side beam; 13. Receiving cavity; 14. Opening; 15. Second mounting hole;

[0020] 20. Cover;

[0021] 30. Mounting section; 31. First mounting slot; 32. Second mounting slot;

[0022] 40. Connecting parts;

[0023] 50. Sealing ring; 51. Fourth mounting hole; 60. Battery pack. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] like Figures 1 to 3 As shown, in some embodiments according to this application, a battery housing is provided for accommodating a battery pack 60. The battery housing includes: a frame 10, a cover 20, a mounting portion 30, a connector 40, and a sealing ring 50. The frame 10 has a receiving cavity 13 for accommodating the battery pack 60 and an opening 14 communicating with the receiving cavity 13. The frame 10 includes a first side beam 11 and a second side beam 12 connected to the first side beam 11. The cover 20 covers the opening 14. The mounting portion 30 includes a first mounting groove 31 disposed on the surface of the first side beam 11 facing the cover 20 and a second mounting groove 32 disposed on the surface of the second side beam 12 facing the cover 20, the second mounting groove 32 communicating with the first mounting groove 31. The connector 40 is disposed within the first mounting groove 31 and the second mounting groove 32. The sealing ring 50 is disposed between the cover 20 and the frame 10 and surrounds the outer periphery of the opening 14, wherein the sealing ring 50 is located on the side of the mounting portion 30 closer to the opening 14.

[0028] By applying the above technical solution, the connector 40 can connect the first side beam 11 and the second side beam 12, thereby improving the reliability of the connection between the first side beam 11 and the second side beam 12 and enhancing the structural strength of the enclosure. Furthermore, the arrangement of the first mounting groove 31 and the second mounting groove 32 reduces the distance of the connector 40 protruding from the surface of the frame 10 towards the cover 20, thus reducing the gap between the cover 20 and the frame 10 when the cover 20 is placed over the opening 14, thereby improving the enclosure's sealing performance. The sealing ring 50 fills the gap between the cover 20 and the frame 10, allowing the cover 20 and the frame 10 to be sealed together. Furthermore, by placing the sealing ring 50 on the side of the mounting portion 30 near the opening 14, interference between the mounting portion 30 and the sealing ring 50 is reduced, preventing gaps when the sealing ring 50 covers the mounting portion 30, allowing the sealing ring 50 to fit tightly against the frame 10. This also reduces interference between the connector 40 located within the mounting portion 30 and the sealing ring 50, preventing deformation or damage to the sealing ring 50 when it is lifted by the connector 40, further improving the sealing effect of the sealing ring 50. This arrangement of the sealing ring 50 ensures that it is not affected by the connector 40 and the mounting portion 30, allowing it to maintain its sealing function and preventing external environmental factors such as moisture and dust from entering the battery box, protecting the battery pack 60 from damage. Thus, while enhancing the structural strength of the box, a good sealing effect is also achieved. Therefore, the technical solution of this application effectively solves the problem in related technologies where it is difficult to achieve a good sealing effect while improving the structural strength of the box.

[0029] In some other embodiments according to this application, the sealing ring 50 is located on the side of the mounting portion 30 away from the opening 14; or, there are two sealing rings 50, with the two sealing rings 50 located on the side of the mounting portion 30 near the opening 14 and the side of the mounting portion 30 away from the opening 14, respectively.

[0030] In some embodiments according to this application, the connector 40 is a connecting piece, which connects the first side beam 11 and the second side beam 12. This makes the distance of the connecting piece protruding from the surface of the frame 10 toward the cover 20 more controllable, and reduces the distance of the connecting piece protruding from the first side beam 11 and the second side beam 12 toward the surface of the cover 20. This reduces the gap between the cover 20 and the frame 10 when the cover 20 is placed at the opening 14, thereby improving the sealing performance of the box.

[0031] In some other embodiments according to this application, the connector 40 is a solder, which is disposed in the first mounting groove 31 and the second mounting groove 32 to connect the first side beam 11 and the second side beam 12.

[0032] like Figure 6As shown, the minimum distance D1 between the sealing ring 50 and the first mounting groove 31 satisfies: 0mm ≤ D1 ≤ 10mm. The minimum distance D2 between the sealing ring 50 and the second mounting groove 32 satisfies: 0mm ≤ D2 ≤ 10mm. By specifying that the minimum distances D1 and D2 between the sealing ring 50 and the first mounting groove 31 and the second mounting groove 32 are within a reasonable range, the placement position of the sealing ring 50 is limited, further reducing the possibility of interference between the mounting part 30 and the sealing ring 50, and between the connector 40 and the sealing ring 50, thereby further improving the sealing effect of the sealing ring 50. The above settings reduce the impact of possible structural changes or stress concentrations on the sealing ring 50 caused by the first mounting groove 31 and the second mounting groove 32, thereby avoiding unnecessary deformation of the sealing ring 50 under compression, maintaining a tight fit between the sealing ring 50 and the frame 10, and thus improving the sealing performance of the sealing ring 50.

[0033] Preferably, the minimum distance D1 between the sealing ring 50 and the first mounting groove 31 is 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. The minimum distance D2 between the sealing ring 50 and the second mounting groove 32 is 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm.

[0034] In some other embodiments according to this application, the minimum distance D1 between the sealing ring 50 and the first mounting groove 31 satisfies: 0mm ≤ D1 ≤ 10mm. Alternatively, the minimum distance D2 between the sealing ring 50 and the second mounting groove 32 satisfies: 0mm ≤ D2 ≤ 10mm.

[0035] like Figures 1 to 3 As shown, connector 40 is interference-fitted with the first mounting groove 31 and with the second mounting groove 32. The interference fit between connector 40 and the first mounting groove 31 increases the friction between connector 40 and the first side beam 11, and the interference fit between connector 40 and the second mounting groove 32 increases the friction between connector 40 and the second side beam 12, making connector 40 more secure after installation. This feature not only reduces the possibility of connector 40 loosening but also enhances the reliability of the connection between the first side beam 11 and the second side beam 12, further ensuring the structural stability of the battery box.

[0036] In some other embodiments according to this application, the connector 40 is interference-fitted with the first mounting groove 31, or the connector 40 is interference-fitted with the second mounting groove 32.

[0037] In other embodiments according to this application, the connector 40 is interference-fitted with the first mounting groove 31, and the connector 40 is connected to the first side beam 11 by welding. Compared with direct welding between the first side beam 11 and the second side beam 12, this embodiment can reduce the use of solder, thereby reducing the possibility of the cover 20 being lifted and improving the sealing effect of the box. The connector 40 is interference-fitted with the second mounting groove 32, and the connector 40 is connected to the second side beam 12 by welding. Compared with direct welding between the first side beam 11 and the second side beam 12, this embodiment can reduce the use of solder, thereby reducing the possibility of the cover 20 being lifted and improving the sealing effect of the box.

[0038] like Figure 3 and Figure 4 As shown, the battery housing also includes a first fastener for connecting the frame 10 and the cover 20. The cover 20 has a first mounting hole, and the frame 10 has a second mounting hole 15. The first fastener passes through the first mounting hole and the second mounting hole 15. The first mounting hole is located on one side of the sealing ring 50, and the second mounting hole 15 is also located on one side of the sealing ring 50. By introducing the first fastener to connect the frame 10 and the cover 20, the reliability of the connection between the cover 20 and the frame 10 is increased, and the operation of connecting the cover 20 and the frame 10 is also facilitated. Furthermore, placing the first mounting hole on one side of the sealing ring 50 and the second mounting hole 15 on one side of the sealing ring 50 reduces the physical damage to the sealing ring 50 caused by the first fastener during the connection of the cover 20 and the frame 10, and also reduces the risk of the first fastener applying additional stress to the sealing ring 50 during installation, thus ensuring the sealing performance of the sealing ring 50.

[0039] like Figure 3 , Figure 4 as well as Figure 7 As shown, the minimum distance D3 between the second mounting hole 15 and the sealing ring 50 satisfies: 0mm ≤ D3 ≤ 20mm. By limiting the minimum distance D4 between the second mounting hole 15 and the sealing ring 50, direct compression or wear on the sealing ring 50 when the first fastener passes through the second mounting hole 15 is avoided, ensuring the integrity of the sealing ring 50 during the connection process between the cover 20 and the frame 10, thereby guaranteeing the sealing effect of the sealing ring 50. Furthermore, the above setting reduces the impact of structural changes or stress concentrations that may be caused to the sealing ring 50 by the first fastener passing through the second mounting hole 15, thereby avoiding unnecessary deformation of the sealing ring 50 under compression, maintaining a tight fit between the sealing ring 50 and the frame 10 and the cover 20, and thus improving the sealing performance of the sealing ring 50. Preferably, the minimum distance D3 between the second mounting hole 15 and the sealing ring 50 is 0mm, 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, or 20mm.

[0040] like Figure 1 , Figure 2 and Figure 6 As shown, the sealing ring 50 is fixedly connected to the frame 10. This fixed connection enhances the positioning stability of the sealing ring 50, preventing displacement when the battery box is subjected to external impacts or vibrations. This ensures the sealing effect of the sealing ring 50 under various operating conditions, especially its sealing reliability when the battery box is in complex environmental conditions.

[0041] In some embodiments according to this application, the sealing ring 50 is fixed to the surface of the frame 10 facing the cover 20. Specifically, the sealing ring 50 is fixed to the surface of the frame 10 facing the cover 20 by adhesive bonding.

[0042] In some other embodiments according to this application, the sealing ring 50 is fixed to the side wall of the receiving cavity 13, and the sealing ring 50 protrudes from the surface of the frame 10 toward the cover 20 in the direction toward the cover 20.

[0043] like Figure 5 As shown, the battery housing also includes a second fastener for connecting the frame 10 and the sealing ring 50. The frame 10 has a third mounting hole, and the sealing ring 50 has a fourth mounting hole 51. The second fastener passes through both the third and fourth mounting holes 51. A first preset distance is maintained between the fourth mounting hole 51 and the surface of the sealing ring 50 near the opening 14, and a second preset distance is maintained between the fourth mounting hole 51 and the surface of the sealing ring 50 away from the opening 14. By using the second fastener to fix the frame 10 and the sealing ring 50, the fixing reliability of the sealing ring 50 is improved, and the offset of the sealing ring 50 during use is reduced. Simultaneously, the first and second preset distances ensure that while the sealing ring 50 is fixed by the second fastener, the portions of the sealing ring 50 located on both sides of the second fastener remain sealed, preventing external environmental factors such as moisture and dust from entering the battery housing through the second fastener, thus maintaining a good sealing effect.

[0044] It should be noted that, as Figure 5 As shown, the first preset distance refers to the minimum distance L1 between the fourth mounting hole 51 and the surface of the sealing ring 50 near the opening 14. The second preset distance refers to the minimum distance L2 between the fourth mounting hole 51 and the surface of the sealing ring 50 away from the opening 14. The first preset distance is... Figure 5 L1 in the middle, the second preset distance is Figure 5 In the L2, 5mm≤L1≤15mm, 3mm≤L2≤15mm.

[0045] Preferably, L1 is 5mm, 7mm, 10mm, 12mm, 14mm or 15mm. L2 is 3mm, 5mm, 7mm, 10mm, 12mm, 14mm or 15mm.

[0046] like Figure 7 As shown, the distance D4 between the first mounting groove 31 and the inner edge of the first side beam 11 satisfies: 5mm ≤ D4 ≤ 25mm; the distance D5 between the first mounting groove 31 and the outer edge of the first side beam 11 satisfies: 0mm ≤ D5 ≤ 20mm. By limiting the distances D4 and D5 between the first mounting groove 31 and the inner edge of the first side beam 11, the setting position of the first mounting groove 31 is optimized, making the stress on the first side beam 11 more uniform when the connector 40 is connected to it, and making the connection between the first side beam 11 and the second side beam 12 more reliable. Furthermore, the above settings also ensure that the connector 40 effectively strengthens the connection between the first side beam 11 and the second side beam 12 without excessively approaching the inner and outer edges of the first side beam 11, causing stress concentration, further improving the structural stability of the entire battery box.

[0047] Preferably, the distance D4 between the first mounting groove 31 and the inner edge of the first side beam 11 is 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 17mm, 19mm, 20mm, 22mm, 24mm or 25mm.

[0048] The distance D5 between the first mounting groove 31 and the outer edge of the first side beam 11 is 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm.

[0049] like Figure 7 As shown, the relationship between the distance D4 between the first mounting groove 31 and the inner edge of the first side beam 11 and the distance D5 between the first mounting groove 31 and the outer edge of the first side beam 11 satisfies: 0.8 ≤ D4 / D5 ≤ 1.2. By defining the proportional relationship between D4 and D5, the positional distribution of the first mounting groove 31 on the first side beam 11 is restricted, so that the reinforcement effect of the connector 40 can be evenly distributed on the inner and outer sides of the side beam, avoiding the situation of over-reinforcement on one side and under-reinforcement on the other side, thus ensuring the overall structural strength of the box.

[0050] Preferably, D4 / D5 is 0.8, 0.9, 1.0, 1.1 or 1.2.

[0051] In some embodiments according to this application, the specific position of the second mounting groove 32 on the second side beam 12 can be set with reference to the relative position of the first mounting groove 31 and the first side beam 11.

[0052] like Figure 1 and Figure 2 As shown, the sealing ring 50 is disposed on the surface of the frame 10 facing the cover 20. The sealing ring 50 has a first surface facing the cover 20, and the connector 40 has a second surface facing the cover 20. The first surface is located on the side of the second surface facing the cover 20. The sealing ring 50 is disposed on the surface of the frame 10 facing the cover 20, and its first surface is closer to the cover 20 than the second surface of the connector 40. This design ensures that when the connector 40 is disposed in the mounting part 30, the contact between the cover 20 and the frame 10 can be completed through the sealing ring 50, avoiding the gap between the sealing ring 50 and the cover 20 that may be caused by the connector 40 directly contacting the cover 20, thus ensuring the sealing performance of the battery box.

[0053] like Figure 1 As shown, in some embodiments according to this application, there are two first side beams 11 and two second side beams 12. One first side beam 11 connects between two second side beams 12, and one second side beam 12 connects between two first side beams 11. Each end of the first side beam 11 has a first mounting groove 31, and each end of the second side beam 12 has a second mounting groove 32. Adjacent first mounting grooves 31 and second mounting grooves 32 are connected. There are four connectors 40, which are respectively disposed at the four connection points between the first side beam 11 and the second side beam 12. The battery box also includes a base plate disposed opposite to the cover 20, and the base plate is connected to the first side beam 11 and the second side beam 12.

[0054] like Figure 1 As shown, this application also provides a battery pack, which includes a battery housing and a battery pack 60 disposed within the battery housing. The battery housing is the aforementioned battery housing. Because the aforementioned battery housing can solve the problem in related technologies where it is difficult to achieve a good sealing effect while improving the structural strength of the housing, the battery pack with this battery housing can solve the same technical problem.

[0055] This application also provides an electrical device including a battery pack, which is the aforementioned battery pack. Because the aforementioned battery pack can solve the problem in related technologies where it is difficult to maintain a good sealing effect while improving the structural strength of the casing, the electrical device having this battery pack can solve the same technical problem.

[0056] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery case for housing a battery pack (60), characterized by, The battery housing includes: The frame (10) has a receiving cavity (13) for accommodating the battery pack (60) and an opening (14) communicating with the receiving cavity (13). The frame (10) includes a first side beam (11) and a second side beam (12) connected to the first side beam (11). A cover (20) is provided over the opening (14); The mounting part (30) includes a first mounting groove (31) disposed on the surface of the first side beam (11) facing the cover (20) and a second mounting groove (32) disposed on the surface of the second side beam (12) facing the cover (20), wherein the second mounting groove (32) communicates with the first mounting groove (31). A connector (40) is disposed in the first mounting groove (31) and the second mounting groove (32); A sealing ring (50) is disposed between the cover (20) and the frame (10) and surrounds the outer periphery of the opening (14), wherein the sealing ring (50) is located on the side of the mounting part (30) near the opening (14) and / or away from the opening (14).

2. The battery housing according to claim 1, characterized in that, The minimum distance D1 between the sealing ring (50) and the first mounting groove (31) satisfies: 0mm ≤ D1 ≤ 10mm; and / or, The minimum distance D2 between the sealing ring (50) and the second mounting groove (32) satisfies: 0mm≤D2≤10mm.

3. The battery pack of claim 1, wherein, The connector (40) is interference-fitted with the first mounting groove (31), and / or the connector (40) is interference-fitted with the second mounting groove (32).

4. The battery pack of claim 1, wherein, The battery housing also includes a first fastener for connecting the frame (10) and the cover (20). The cover (20) is provided with a first mounting hole, and the frame (10) is provided with a second mounting hole (15). The first fastener passes through the first mounting hole and the second mounting hole (15). The first mounting hole is located on one side of the sealing ring (50), and the second mounting hole (15) is located on one side of the sealing ring (50).

5. The battery pack of claim 4, wherein, The minimum distance D3 between the second mounting hole (15) and the sealing ring (50) satisfies: 0mm≤D3≤20mm.

6. The battery pack of claim 1, wherein, The sealing ring (50) is fixedly connected to the frame (10).

7. The battery pack of claim 6, wherein, The battery housing also includes a second fastener for connecting the frame (10) and the sealing ring (50). The frame (10) is provided with a third mounting hole, and the sealing ring (50) is provided with a fourth mounting hole (51). The second fastener passes through the third mounting hole and the fourth mounting hole (51). The fourth mounting hole (51) and the surface of the sealing ring (50) near the opening (14) have a first preset distance, and the fourth mounting hole (51) and the surface of the sealing ring (50) away from the opening (14) have a second preset distance.

8. The battery housing according to claim 1, characterized in that, The distance D4 between the first mounting groove (31) and the inner edge of the first side beam (11) satisfies: 5mm≤D4≤25mm; The distance D5 between the first mounting groove (31) and the outer edge of the first side beam (11) satisfies: 0mm≤D5≤20mm.

9. The battery pack of claim 1, wherein, The relationship between the distance D4 between the first mounting groove (31) and the inner edge of the first side beam (11) and the distance D5 between the first mounting groove (31) and the outer edge of the first side beam (11) satisfies: 0.8≤D4 / D5≤1.

2.

10. The battery pack of claim 1, wherein, The sealing ring (50) is disposed on the surface of the frame (10) facing the cover (20), the sealing ring (50) has a first surface facing the cover (20), the connector (40) has a second surface facing the cover (20), and the first surface is located on the side of the second surface facing the cover (20).

11. A battery pack comprising a battery case and a battery group (60) disposed within the battery case, characterized by, The battery housing is the battery housing according to any one of claims 1 to 10.

12. An electrically powered device comprising a battery pack, characterized in that The battery pack is the battery pack according to claim 11.

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