Shell assembly, mobile power supply and energy storage system

Abstract

The utility model discloses a housing assembly, mobile power supply and energy storage system, the housing assembly comprises a bottom housing, a top cover, a plug interface and casters, the bottom housing is integrally formed and is provided with an inner cavity used for storing a battery module, the inner cavity is provided with an opening, the opening is arranged at the top of the bottom housing, and the plug interface is arranged on the top of the bottom housing. The top cover is detachably sealed and plugged at the opening of the bottom shell, at least one of the side wall of the bottom shell and the top cover is provided with the plug-in port, the plug-in port is used for realizing electric connection, the at least one trundle is arranged at the bottom of the bottom shell, and the plug-in port is used for realizing electric connection. The trundles are used for reducing friction force borne by the shell assembly in the moving process. According to the shell assembly, the number of waterproof positions is small, the overall waterproof sealing performance is good, the structural strength is high, and moving is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile power supplies, and in particular to a housing assembly for a mobile power supply, a mobile power supply and an energy storage system. Background Art

[0002] Mobile power is a kind of energy storage device that can discharge energy in the absence of external power supply. With the rise of outdoor sports in recent years, the demand for mobile power is increasing. However, the mobile power in the prior art has problems such as poor waterproof sealing, inconvenient to move, and poor flexibility of use. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a shell assembly, which has fewer locations that need to be waterproofed, has good overall waterproof sealing, and has high structural strength and is easy to move.

[0005] The embodiment of the utility model also provides a mobile power source including the above-mentioned housing assembly.

[0006] The embodiment of the utility model also provides an energy storage system including the above-mentioned mobile power supply.

[0007] The housing assembly of the utility model embodiment includes:

[0008] A bottom shell and a top cover, wherein the bottom shell is integrally formed and is provided with an inner cavity for storing the battery module, the inner cavity has an opening, the opening is provided at the top of the bottom shell, and the top cover is detachably sealed and blocked at the opening of the bottom shell;

[0009] A plug-in port and casters, wherein at least one of the side wall of the bottom shell and the top cover is provided with the plug-in port, and the plug-in port is used to achieve electrical connection, and at least one caster is provided and arranged at the bottom of the bottom shell, and the caster is used to reduce the friction force on the shell assembly when it moves.

[0010] In some embodiments, a sealing member is included, the sealing member is provided at least one of the bottom shell and the top cover and is located between the bottom shell and the top cover, and the sealing member is located at the outer peripheral side of the opening and is extended along the circumference of the opening.

[0011] In some embodiments, a plurality of buffer members are included, the top cover and at least part of the cavity wall of the inner cavity are provided with the buffer members, and the buffer members are used to elastically support between the top cover and the battery module and / or between the bottom shell and the battery module.

[0012] In some embodiments, the battery module includes a bracket and a battery cell disposed on the bracket, and the bracket is interference-fitted with the top cover and / or the bottom shell;

[0013] And / or, the buffer component is made of foam material.

[0014] In some embodiments, the casters are detachably mounted on the bottom of the bottom shell;

[0015] And / or, there are a plurality of casters, and the plurality of casters are arranged at intervals along a set edge of the bottom of the bottom shell.

[0016] In some embodiments, a pull rod is included, which is detachably provided on the bottom shell, the pull rod and the caster are located on the same side of the bottom shell, and the pull rod is located above the caster and is used for manual pulling when the shell assembly moves.

[0017] In some embodiments, the plug-in interface includes a first interface, the first interface is arranged on the top cover, the first interface includes a first shell and a plurality of first conductors, the first shell is fixed to the top cover, the plurality of first conductors are arranged in the first shell, the first shell is used to be provided with a glue groove for filling with sealant on a side facing the battery module, and the plurality of first conductors are located in the glue groove.

[0018] In some embodiments, the plug-in interface includes a second interface, the second interface is arranged on the bottom shell, the second interface includes a second shell and a plurality of second conductors, the second shell is fixed to the bottom shell, the plurality of second conductors are fixed in the second shell by ultrasonic welding, and each contact position between the second conductor and the second shell is provided with sealant.

[0019] In some embodiments, the bottom shell or the top cover is provided with an airtight hole for performing an airtightness test, and the airtight hole is sealed by a sealing member after the airtightness test.

[0020] In some embodiments, the blocking member includes a threaded member and a gasket, the threaded member is threadedly assembled in the airtight hole, and the gasket is annular and clamped between the end of the threaded member and the bottom shell or the top cover;

[0021] Alternatively, the blocking member is a waterproof breathable valve.

[0022] In some embodiments, the inner cavity is filled with a filling medium, and the filling medium is injected into the inner cavity through the airtight hole.

[0023] In some embodiments, the bottom shell and / or the top cover are made of metal.

[0024] The mobile power source of the embodiment of the utility model comprises a battery module and a housing assembly as described in any of the above embodiments, wherein the battery module is assembled in the housing assembly.

[0025] The energy storage system of the embodiment of the utility model comprises an external device and a mobile power supply as described in any of the above embodiments, wherein the external device is provided with at least one and is electrically connected to the plug interface of the mobile power supply.

[0026] In some embodiments, the external device is a battery pack module, an inverter module or another mobile power source.

[0027] Beneficial effects: The housing assembly, mobile power supply and energy storage system of the embodiments of the utility model require fewer places to be waterproofed, have good overall waterproof sealing, and have high structural strength and are easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded schematic diagram of a mobile power supply according to an embodiment of the utility model.

[0029] Figure 2 It is a cross-sectional schematic diagram of a mobile power supply according to an embodiment of the utility model.

[0030] Figure 3 It is a partial structural exploded schematic diagram of a housing assembly of an embodiment of the utility model.

[0031] Figure 4 It is a schematic diagram of a first interface according to an embodiment of the present utility model.

[0032] Figure 5 yes Figure 4 Schematic diagram of the glue slot of the first interface.

[0033] Figure 6 It is a schematic diagram of a second interface according to an embodiment of the present utility model.

[0034] Figure 7 It is a schematic diagram of the assembly of the second conductor and the second shell of the second interface of one embodiment of the utility model.

[0035] Figure 8 It is a schematic diagram of an airtight hole according to an embodiment of the utility model.

[0036] Fig. 9 It is a longitudinal cross-sectional schematic diagram of a blocking member according to an embodiment of the utility model.

[0037] Fig.10 It is a schematic diagram of an energy storage system according to an embodiment of the present utility model.

[0038] Reference numerals:

[0039] 100- mobile power supply;

[0040] 1- bottom shell; 11- inner cavity;

[0041] 2-top cover; 21-airtight hole; 22-blocking member; 221-threaded member; 222-gasket;

[0042] 3-plug interface; 31-first interface; 311-first shell; 312-first conductor; 313-glue groove; 32-second interface; 321-second shell; 322-second conductor;

[0043] 4- Casters;

[0044] 5- Seal;

[0045] 6-battery module; 61-bracket; 62-battery cell;

[0046] 7-Tie rod;

[0047] 8-Foot pads;

[0048] 9- buffer;

[0049] 200-External devices. DETAILED DESCRIPTION

[0050] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0051] like Figure 1 As shown, the housing assembly of one embodiment of the utility model includes a bottom shell 1, a top cover 2, a plug-in port 3 and casters 4.

[0052] The bottom shell 1 is integrally formed and is provided with an inner cavity 11 for storing the battery module 6 . The inner cavity 11 has an opening, and the opening is provided at the top of the bottom shell 1 . The top cover 2 is detachably sealed at the opening of the bottom shell 1 .

[0053] For example, the material of the bottom shell 1 can be metal, and the bottom shell 1 can be integrally formed by casting or the like. The bottom shell 1 as a whole can be in the shape of a square box, and the internal space of the bottom shell 1 is the inner cavity 11. The top of the inner cavity 11 is open and has an opening, and the battery module 6 can be placed into the inner cavity 11 of the bottom shell 1 from the opening.

[0054] The top cover 2 can be generally in the shape of a flat plate, and the shape of the top cover 2 is adapted to the shape of the opening. When the battery module 6 is placed in the inner cavity 11, the top cover 2 can be detachably mounted on the top side of the bottom shell 1 by fasteners such as bolts, and there is good sealing between the top cover 2 and the bottom shell 1. Thus, the inner cavity 11 can be sealed and blocked, thereby achieving the effect of protecting the battery module 6.

[0055] At least one of the side wall of the bottom shell 1 and the top cover 2 is provided with a plug-in port 3, and the plug-in port 3 is used to achieve electrical connection. At least one caster 4 is provided and arranged at the bottom of the bottom shell 1, and the caster 4 is used to reduce the friction force on the shell assembly when moving.

[0056] For example, there may be only one socket 3, which may be provided on the top cover 2. The socket 3 is an electrical connector. When in use, an external plug may be electrically connected to the battery module 6 in the bottom shell 1 through the socket 3, thereby meeting the needs of charging and supplying power to the outside.

[0057] like Figure 1 As shown, a mounting portion may be provided at the rear bottom of the bottom shell 1, and the axle of the caster 4 may be fixed at the mounting portion. When movement is required, the caster 4 may be used as a fulcrum to achieve rolling friction between the shell assembly and the ground, thereby improving the convenience of movement.

[0058] The shell assembly of the present embodiment has a bottom shell 1 of an integrated structure. Compared with the prior art design in which the bottom shell 1 is made of multiple side panels, the overall structure is simple and fewer locations require waterproofing, thereby improving the overall waterproof sealing of the shell assembly and the overall structural strength of the shell assembly, fully meeting the requirements of load-bearing and protection.

[0059] Secondly, when moving the shell assembly, the caster 4 can be used as a fulcrum to achieve rolling friction with the ground, avoiding the need to carry or drag the mobile shell and easily rubbing against the ground, thereby improving the convenience of movement of the shell assembly and further facilitating user use.

[0060] In some embodiments, the housing assembly includes a seal 5, which is disposed on at least one of the bottom shell 1 and the top cover 2 and located between the bottom shell 1 and the top cover 2, and the seal 5 is located on the outer peripheral side of the opening and is extended along the circumference of the opening.

[0061] For example, Figure 1 As shown, the seal 5 can be a sealing ring, and the material of the seal 5 can be foam, rubber, silicone, etc. The seal 5 can be fixed on the top cover 2, and the seal 5 can be a square ring and can extend along the outer edge of the top cover 2 to close into a circle.

[0062] After the battery module 6 is placed in the inner cavity 11, the top cover 2 can be buckled onto the top side of the bottom shell 1. At this time, the seal 5 can be clamped between the edges of the openings of the top cover 2 and the bottom shell 1. The seal 5 can be deformed under the clamping action of the top cover 2 and the bottom shell 1, thereby achieving a waterproof seal between the top cover 2 and the bottom shell 1, thereby ensuring the overall sealing of the shell assembly.

[0063] In some embodiments, the shell assembly includes multiple buffer members 9, and the top cover 2 and at least part of the cavity wall of the inner cavity 11 are provided with buffer members 9, and the buffer members 9 are used to elastically support between the top cover 2 and the battery module 6 and / or between the bottom shell 1 and the battery module 6.

[0064] For example, Figure 2 As shown, a small amount of gap can be reserved between the battery module 6 and the top cover 2, and between the battery module 6 and each side wall and bottom wall of the bottom shell 1, and a buffer member 9 can be interference fitted in each gap. The buffer member 9 can be made of foam material (EPP), and the foam material has a certain hardness and elasticity, so that on the one hand, it satisfies the function of supporting the top between the battery module 6 and the inner wall of the shell assembly, and on the other hand, it also has the function of elastic buffering, so that there is a certain buffering amount between the battery module 6 and the inner wall of the shell assembly, which plays a buffering and protective role for the battery module 6.

[0065] In some embodiments, the battery module 6 includes a bracket 61 and a battery cell 62 disposed on the bracket 61, and the bracket 61 is interference-fitted with the top cover 2 and / or the bottom shell 1. Figure 1 As shown, the bracket 61 can be a rectangular parallelepiped as a whole, and the shape of the bracket 61 is adapted to the shape of the inner cavity 11 of the bottom shell 1. A plurality of battery cells 62 can be loaded in the bracket 61, and the plurality of battery cells 62 can be arranged in a matrix. When the battery module 6 is placed in the inner cavity 11 of the bottom shell 1, the bracket 61 can be interference-fitted between two opposite side walls of the bottom shell 1, thereby improving the structural stability and compactness of the battery module 6 assembled in the housing assembly.

[0066] In some other embodiments, after the top cover 2 is assembled on the top side of the bottom shell 1 , the bracket 61 may also be interference fit between the top cover 2 and the bottom shell 1 .

[0067] In some embodiments, the caster 4 is detachably mounted on the bottom of the bottom shell 1. For example, the caster 4 may include a wheel axle and a wheel body, the wheel body may be mounted on the outer peripheral side of the wheel axle, and the wheel axle may be fixed to the bottom of the bottom shell 1 by threaded assembly or the like, and may be specifically located at the lower rear side of the bottom shell 1.

[0068] Therefore, the caster 4 can act as a fulcrum and realize rolling friction when moving, and can also directly contact the ground when not moving, so that the caster 4 can play a role of supporting the shell assembly.

[0069] In some embodiments, there are multiple casters 4, and the multiple casters 4 are arranged at intervals along the set edges of the bottom of the bottom shell 1. Figure 1As shown, only two casters 4 can be provided, and both casters 4 are provided at the rear bottom of the bottom shell 1, one caster 4 can be located on the left side of the bottom shell 1, and the other caster 4 can be located on the right side of the bottom shell 1, and the two casters 4 are arranged in mirror symmetry with respect to the bottom shell 1. Thus, the use requirements of the bearing shell assembly are fully met.

[0070] In some embodiments, the shell assembly includes a pull rod 7, which is detachably disposed on the bottom shell 1. The pull rod 7 and the caster 4 are located on the same side of the bottom shell 1, and the pull rod 7 is located above the caster 4 and is used for manual pulling when the shell assembly moves.

[0071] For example, Figure 1 As shown, the pull rod 7 can be installed on the rear side of the bottom shell 1 by fasteners such as screws and extend in the up and down direction. The pull rod 7 can be retracted, and the pull rod 7 can be arranged between the two casters 4. When it is necessary to move, the pull rod 7 can be extended. At this time, a person can hold the pull rod 7 by hand, thereby facilitating the pulling of the shell assembly. When it is not necessary to move, the pull rod 7 can be retracted, thereby facilitating the storage arrangement of the shell assembly.

[0072] In some embodiments, the plug-in interface includes a first interface 31, which is disposed on the top cover 2. The first interface 31 includes a first shell 311 and a plurality of first conductors 312. The first shell 311 is fixed to the top cover 2, and the plurality of first conductors 312 are disposed in the first shell 311. The first shell 311 is provided with a glue groove 313 for filling sealant on one side facing the battery module 6, and the plurality of first conductors 312 are located in the glue groove 313.

[0073] For example, Figure 3 and Figure 4 As shown, the top cover 2 may be provided with an opening, the first interface 31 may pass through the opening and be fixed to the top cover 2 by fasteners, and the first interface 31 may be provided adjacent to the rear edge of the top cover 2 .

[0074] like Figure 4 As shown, the material of the first shell 311 can be an insulating material such as plastic, the material of the first conductor 312 can be a conductive material such as copper, the first conductor 312 can be a sheet structure, and in some other embodiments, the first conductor 312 can also be a structure such as a pin. Multiple first conductors 312 can be fixed in the first shell 311 by integral injection molding, and multiple first conductors 312 can be arranged at equal intervals along the left and right directions. It should be noted that the integral injection molding method not only meets the need for fixing the first conductor 312, but also ensures that the first conductor 312 and the first shell 311 have waterproof sealing.

[0075] like Figure 5As shown, the back side of the first shell 311 (the surface facing the battery module 6) may be provided with a glue groove 313, which may be a rectangular groove, and a part of the plurality of first conductors 312 may be located in the glue groove 313. During processing, the glue groove 313 may be filled with materials such as waterproof sealant. Thus, on the one hand, the fixing effect of the plurality of first conductors 312 may be further enhanced, and on the other hand, the waterproof sealing may be further improved, thereby playing a role in electrical protection.

[0076] In some embodiments, the plug-in interface includes a second interface 32, which is disposed on the bottom shell 1. The second interface 32 includes a second shell 321 and a plurality of second conductors 322. The second shell 321 is fixed to the bottom shell 1, and the plurality of second conductors 322 are fixed in the second shell 321 by ultrasonic welding, and a sealant is applied at the contact position between each second conductor 322 and the second shell 321.

[0077] For example, Figure 3 As shown, the rear side wall of the bottom shell 1 may also be provided with an opening, and the second interface 32 may pass through the opening and be fixed to the rear side wall of the bottom shell 1 by fasteners, and the second interface 32 may be arranged adjacent to the upper edge of the rear side wall of the bottom shell 1 .

[0078] like Figure 6 and Figure 7 As shown, the material of the second shell 321 can be an insulating material such as plastic, the material of the second conductor 322 can be a conductive material such as copper, and the second conductor 322 can be a spring structure. The second conductor 322 can be fixed in the second shell 321 by ultrasonic welding, thereby ensuring the waterproof sealing between the second conductor 322 and the second shell 321.

[0079] After the second conductor 322 and the second shell 321 are fixed by welding, waterproof sealant may be applied at the gap between each second conductor 322 and the second shell 321 , thereby improving the waterproof sealing between the second conductor 322 and the second shell 321 .

[0080] In some embodiments, the bottom shell 1 or the top cover 2 is provided with an airtight hole 21 for performing an airtightness test, and the airtight hole 21 is sealed and blocked by a blocking member 22 after the airtightness test.

[0081] For example, Figure 8 As shown, the airtight hole 21 can be a stepped hole, and the airtight hole 21 can be provided in the front half of the top cover 2, and the airtight hole 21 penetrates the top cover 2 in the up-down direction. When the top cover 2 is assembled on the bottom shell 1, gas can be introduced into the inner cavity 11 of the bottom shell 1 through the airtight hole 21, so that the airtightness test of the assembled top cover 2 and bottom shell 1 can be realized. After the test is completed, the airtight hole 21 can be blocked by the blocking member 22, so as to ensure the overall sealing.

[0082] In some embodiments, the sealing member 22 includes a threaded member 221 and a gasket 222 . The threaded member 221 is threadedly assembled in the airtight hole 21 . The gasket 222 is annular and is clamped between the end of the threaded member 221 and the bottom shell 1 or the top cover 2 .

[0083] For example, Fig. 9 As shown, the threaded member 221 can be a bolt, and the gasket 222 can be a silicone gasket 222, a rubber ring, etc. The airtight hole 21 can be provided with an internal thread. During assembly, the gasket 222 can be first placed on the step surface of the airtight hole 21, and then the threaded member 221 can be directly passed through the gasket 222 and threadedly assembled in the airtight hole 21. Since the airtight hole 21 is a stepped hole, the end of the threaded member 221 can be embedded in the airtight hole 21, thereby ensuring the flatness of the upper surface of the top cover 2.

[0084] In some other embodiments, the blocking member 22 may also be a waterproof breathable valve.

[0085] In some embodiments, the inner cavity 11 is filled with a filling medium, and the filling medium is added to the inner cavity 11 through the airtight hole 21. For example, after the airtightness test is performed through the airtight hole 21, if the test is qualified, the filling medium can be added to the inner cavity 11 of the bottom shell 1 through the airtight hole 21. The filling medium can specifically be a heat-insulating material such as foam particles. In some other embodiments, the filling medium can also be a medium capable of cooling and lowering the temperature such as a coolant. After the filling medium is filled, the airtight hole 21 can be sealed and blocked by the above-mentioned blocking member 22.

[0086] In some embodiments, the bottom shell 1 and / or the top cover 2 are made of metal. For example, only the bottom shell 1 can be made of metal, while the top cover 2 can be made of plastic or other materials. In this case, the bottom shell 1 can quickly conduct heat outward, thereby cooling the battery module 6. In some other embodiments, both the bottom shell 1 and the top cover 2 can also be made of metal.

[0087] In some embodiments, Figure 1 As shown, a foot pad 8 may be further provided at the bottom of the bottom shell 1. Four foot pads 8 may be provided. The four foot pads 8 may be arranged at the four corners of the bottom wall of the bottom shell 1. The material of the foot pad 8 may be rubber, plastic, etc., so as to provide support and cushioning effects.

[0088] The mobile power supply 100 according to the embodiment of the present invention is described below.

[0089] like Figure 1 As shown, the mobile power source 100 of the embodiment of the utility model includes a battery module 6 and a housing assembly. The housing assembly may be the housing assembly described in any of the above embodiments, and the battery module 6 is assembled in the housing assembly.

[0090] The energy storage system of an embodiment of the utility model is described below.

[0091] The energy storage system of the embodiment of the utility model includes an external device 200 and a mobile power supply 100. The mobile power supply 100 can be a mobile power supply 100 as described in any of the above embodiments. The external device 200 is provided with at least one and is electrically connected to the plug interface 3 of the mobile power supply 100.

[0092] The external device 200 may be a battery pack module, an inverter module or another mobile power source. Fig.10 As shown, the external device 200 may be an inverter module, which may be installed on the top side of the mobile power source 100 , and the inverter module may be electrically connected to the mobile power source 100 via the first interface 31 on the mobile power source 100 .

[0093] The internal structure of the battery pack module may be similar to that of the mobile power supply of the embodiment of the utility model, but the shell structure may be different. For example, the shell structure of the battery pack module may be a shape suitable for stacking on the mobile power supply of the embodiment of the utility model. The other mobile power supply may have a shell similar to that of the mobile power supply of the embodiment of the utility model, and may be plugged into the side interface of the mobile power supply of the embodiment of the utility model through an electrical connection line.

[0094] In other embodiments, the mobile power supply 100 may be connected in series or in parallel with other mobile power supplies via connecting wires, etc. In other embodiments, the mobile power supply 100 may also be connected to a battery pack module, thereby increasing the overall power capacity and meeting the needs of long battery life.

[0095] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A housing assembly, characterized in that: include: A bottom shell and a top cover, wherein the bottom shell is integrally formed and is provided with an inner cavity for storing the battery module, the inner cavity has an opening, the opening is provided at the top of the bottom shell, and the top cover is detachably sealed and blocked at the opening of the bottom shell; A plug-in port and casters, wherein at least one of the side wall of the bottom shell and the top cover is provided with the plug-in port, and the plug-in port is used to achieve electrical connection, and at least one caster is provided and arranged at the bottom of the bottom shell, and the caster is used to reduce the friction force on the shell assembly when it moves.

2. The housing assembly according to claim 1, characterized in that: A sealing member is included. The sealing member is provided at least one of the bottom shell and the top cover and is located between the bottom shell and the top cover. The sealing member is located at the outer peripheral side of the opening and is extended along the circumference of the opening.

3. The housing assembly according to claim 1, characterized in that: It comprises a plurality of buffer members, the top cover and at least part of the cavity wall of the inner cavity are provided with the buffer members, and the buffer members are used for elastically supporting between the top cover and the battery module and / or between the bottom shell and the battery module.

4. The housing assembly according to claim 3, characterized in that: The battery module comprises a bracket and a battery cell arranged on the bracket, and the bracket is interference-fitted with the top cover and / or the bottom shell; And / or, the buffer component is made of foam material.

5. The housing assembly according to claim 1, characterized in that: The casters are detachably mounted on the bottom of the bottom shell; And / or, there are a plurality of casters, and the plurality of casters are arranged at intervals along a set edge of the bottom of the bottom shell.

6. The housing assembly according to claim 1, characterized in that: It comprises a pull rod, which is detachably arranged on the bottom shell, the pull rod and the caster are located on the same side of the bottom shell, and the pull rod is located above the caster and is used for being manually pulled when the shell assembly moves.

7. The housing assembly according to claim 1, characterized in that: The plug-in interface includes a first interface, which is arranged on the top cover. The first interface includes a first shell and a plurality of first conductors. The first shell is fixed to the top cover, and the plurality of first conductors are arranged in the first shell. The first shell is provided with a glue groove for filling with sealant on a side facing the battery module, and the plurality of first conductors are located in the glue groove.

8. The housing assembly according to claim 1, characterized in that: The plug-in interface includes a second interface, the second interface is arranged on the bottom shell, the second interface includes a second shell and a plurality of second conductors, the second shell is fixed to the bottom shell, the plurality of second conductors are fixed in the second shell by ultrasonic welding, and a sealant is applied at each contact position between the second conductor and the second shell.

9. The housing assembly according to any one of claims 1 to 8, characterized in that: The bottom shell or the top cover is provided with an airtight hole for performing an airtightness test, and the airtight hole is sealed by a sealing member after the airtightness test.

10. The housing assembly according to claim 9, characterized in that: The blocking member includes a threaded member and a gasket, wherein the threaded member is threadably assembled in the airtight hole, and the gasket is annular and is sandwiched between the end of the threaded member and the bottom shell or the top cover; Alternatively, the blocking member is a waterproof breathable valve.

11. The housing assembly according to claim 9, characterized in that: The inner cavity is filled with a filling medium, and the filling medium is injected into the inner cavity through the airtight hole.

12. The housing assembly according to any one of claims 1 to 8, characterized in that: The bottom shell and / or the top cover are made of metal.

13. A mobile power source, characterized in that: It comprises a battery module and a housing assembly as claimed in any one of claims 1 to 12, wherein the battery module is assembled in the housing assembly.

14. An energy storage system, characterized in that: It comprises an external device and a mobile power source as described in claim 13, wherein the external device is provided with at least one and is electrically connected to the socket of the mobile power source.

15. The energy storage system according to claim 14, characterized in that: The external device is a battery pack module, an inverter module or another mobile power source.

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