Mobile power supply and energy storage system

Abstract

The utility model discloses a mobile power supply and energy storage system, which comprises a shell, a battery module, a plurality of jacks and two connecting rows, the battery module is stored in the shell and comprises a battery management circuit module and a battery cell group, the battery management circuit module is electrically connected with the positive electrode end and the negative electrode end of the battery cell group, and the connecting rows are connected with the battery management circuit module. The plurality of jacks are arranged on the shell and are exposed from the outer surface of the shell, and at least two jacks are positioned on different surfaces of the shell; each jack comprises a positive conductive structure and a negative conductive structure, one of the two connecting bars is a positive connecting bar, the other connecting bar is a negative connecting bar, and each connecting bar is connected with a plurality of jacks and a battery management circuit module; and the positive conductive structure and the negative conductive structure of the jack are electrically connected to the positive end and the negative end of the battery cell group respectively. According to the mobile power supply of the utility model, a plurality of mobile power supplies can be conveniently combined for use.

Description

Technical Field

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

[0002] In recent years, with the increasing number of electronic products, the upstream and downstream products derived from electronic products have been constantly updated. As a kind of energy storage device that can charge electronic products, the demand for mobile power has also increased year by year in recent years. However, the mobile power in the prior art is generally used alone and is not convenient to be used in combination with other mobile power. 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 mobile power supply, which is provided with a plurality of sockets. When in use, different mobile power supplies can be electrically connected through the sockets, thereby facilitating the combined use of a plurality of mobile power supplies and improving the power capacity.

[0005] The embodiment of the utility model also provides an energy storage system including the above-mentioned mobile power supply.

[0006] The mobile power supply of the utility model embodiment comprises:

[0007] case;

[0008] A battery module, the battery module is stored in the housing, and the battery module includes a battery management circuit module and a battery cell group, the battery management circuit module is electrically connected to the positive terminal and the negative terminal of the battery cell group;

[0009] A plurality of sockets, each of which is disposed on the housing and exposed from an outer surface of the housing, and at least two of which are located on different surfaces of the housing; the sockets include a positive conductive structure and a negative conductive structure;

[0010] Two connection bars, one of which is a positive connection bar and the other is a negative connection bar, and each of the connection bars is connected to a plurality of the connectors and the battery management circuit module to electrically connect the positive conductive structure and the negative conductive structure of the connector to the positive terminal and the negative terminal of the battery cell group, respectively.

[0011] In some embodiments, the shell includes a bottom shell and a top cover, the top cover is arranged at the top opening of the bottom shell, there are two connectors, the two connectors are a first socket and a second socket, the first socket is arranged on the top cover, and the second socket is arranged on the side wall of the bottom shell.

[0012] In some embodiments, the connection bar is a straight-line bending structure, and the connection bar connects the first socket, the second socket and the battery management circuit module in series.

[0013] In some embodiments, one end of the connection bar is connected to the first socket, the second socket is connected to the middle of the connection bar, and the other end of the connection bar is connected to the battery management circuit module.

[0014] In some embodiments, the connection row includes a first end, a second end and a third end, the first end is connected to the first socket, the second end is connected to the second socket, and the third end is connected to the battery management circuit module.

[0015] In some embodiments, the first socket comprises:

[0016] a first shell, the first shell being fixed to the top cover and passing through the top cover;

[0017] a plurality of first conductors, each of which is fixed to the first shell and passes through the first shell;

[0018] A first circuit board is disposed inside the first shell, a plurality of first conductors are electrically connected to the first circuit board, and the connection row is electrically connected to the first circuit board.

[0019] In some embodiments, a glue groove is provided on the inner side of the first shell, the plurality of first conductors are located in the glue groove, and the glue groove is filled with sealant.

[0020] In some embodiments, an annular portion is provided on the outer side of the first shell, and the plurality of first conductors are located in the annular portion, and the first socket comprises:

[0021] A first sealing ring, the first sealing ring is arranged in the annular portion and surrounds the outer circumference of the plurality of first conductors;

[0022] A second sealing ring is arranged outside the annular portion and surrounds the outer circumference of the annular portion.

[0023] In some embodiments, the second socket comprises:

[0024] a second shell, the second shell being fixed to the housing and passing through a shell wall of the second shell;

[0025] A plurality of second conductors, each of which is fixed to the second shell by ultrasonic welding and passes through the second shell;

[0026] The second circuit board is arranged inside the second shell, the plurality of second conductors are electrically connected to the second circuit board, and the connection row is electrically connected to the second circuit board.

[0027] In some embodiments, a protrusion is provided on the outer side of the second shell, and a plurality of the second conductors are disposed in the protrusion. The second socket includes a third sealing ring, and the third sealing ring is provided on the outer side of the second shell and surrounds the outer peripheral side of the protrusion.

[0028] In some embodiments, the second socket includes a cover body, which is rotatably assembled on the outside of the second shell, and the cover body is used to seal the outer port of the second shell to hide the plurality of second conductors, and an inner lining layer is provided on the inner side of the cover body, and the inner lining layer is used to be clamped between the cover body and the second shell to enhance the sealing between the cover body and the second shell.

[0029] In some embodiments, one of the first socket and the second socket is a male socket, and the other is a female socket.

[0030] In some embodiments, the connecting bar is covered with an insulating sleeve, and the insulating sleeve is heat-shrunk and fixed to the outer peripheral side of the connecting bar;

[0031] And / or, the connection row is provided with a raised bending section, and the raised bending section is used to buffer the relative displacement between the battery management circuit module and the shell.

[0032] The energy storage system of the embodiment of the utility model comprises a plurality of mobile power supplies as described in any of the above embodiments, and the plurality of mobile power supplies are connected in series and / or in parallel via the sockets in the mobile power supplies.

[0033] Beneficial effects: The mobile power supply and energy storage system of the embodiment of the utility model is provided with a plurality of sockets. When in use, different mobile power supplies can be electrically connected through the sockets, thereby facilitating the combined use of a plurality of mobile power supplies and improving the power capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is an exploded schematic diagram of a mobile power supply according to an embodiment of the utility model.

[0035] Figure 2 It is an exploded schematic diagram of a partial structure of a mobile power supply according to an embodiment of the utility model.

[0036] Figure 3 yes Figure 2 Exploded view of the central socket and connection strip.

[0037] Figure 4It is a partial structural schematic diagram of a mobile power supply after assembly according to an embodiment of the utility model.

[0038] Figure 5 yes Figure 2 Schematic diagram of the first socket in .

[0039] Figure 6 yes Figure 5 Schematic diagram of the glue slot of the first socket.

[0040] Figure 7 yes Figure 5 Exploded view of the first socket.

[0041] Figure 8 yes Figure 2 Schematic diagram of the second socket in .

[0042] Fig. 9 yes Figure 8 Exploded view of the second socket.

[0043] Fig.10 Schematic diagram of the cover at the second socket.

[0044] Fig.11 It is an assembly diagram of two sockets, a connection row, and a battery management circuit module according to an embodiment of the utility model.

[0045] Reference numerals:

[0046] 1-shell; 11-bottom shell; 12-top cover;

[0047] 2-battery module; 21-battery management circuit module; 22-battery cell group;

[0048] 3-connector; 31-first socket; 311-first shell; 3111-glue groove; 3112-ring portion; 312-first conductor; 313-first circuit board; 314-first sealing ring; 315-second sealing ring; 32-second socket; 321-second shell; 3211-protrusion; 322-second conductor; 323-second circuit board; 324-third sealing ring; 325-fixing cover; 326-cover body;

[0049] 4-connection row; 41-positive electrode connection row; 42-negative electrode connection row; 43-raised bending section; 44-insulating sleeve. 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 and Figure 2 As shown, a mobile power supply according to an embodiment of the present utility model comprises a housing 1 , a battery module 2 , a plurality of sockets 3 and two connection rows 4 .

[0052] The shell 1 can be roughly in the shape of a cube, and the material of the shell 1 can be metal, plastic, etc. The shell 1 is provided with an inner cavity for placing the battery module 2. After assembly, the battery module 2 can be directly stored in the shell 1, and the shell 1 can play a sealing and protective effect on the battery module 2.

[0053] The battery module 2 includes a battery management circuit module 21 and a battery cell group 22. The battery management circuit module 21 is electrically connected to the positive terminal and the negative terminal of the battery cell group 22. Figure 1 As shown, the battery management circuit module 21 can be regarded as a battery management system (BMS) or a part of the battery management system. The battery cell group 22 can be composed of multiple single cells. The battery management circuit module 21 can be installed on one side of the battery cell group 22, such as the upper side, and the positive and negative terminals of the battery cell group 22 are electrically connected to the battery management circuit module 21.

[0054] When in use, the battery management circuit module 21 can intelligently manage and maintain each battery unit, and can monitor the battery status, such as temperature.

[0055] The plurality of sockets 3 are disposed on the housing 1 and exposed from the outer surface of the housing 1, and at least two sockets 3 are located on different surfaces of the housing 1. Figures 1 to 4 As shown, two sockets 3 can be provided, one of which can be provided on the top side of the shell 1, and the other socket 3 can be provided on the side wall of the shell 1, thereby facilitating the electrical connection between the mobile power supply and the external device from different directions and improving the convenience of use.

[0056] It should be noted that each socket 3 includes a positive conductive structure and a negative conductive structure. When in use, the positive conductive structure can be connected to the positive pole of the circuit, and the negative conductive structure can be connected to the negative pole of the circuit.

[0057] One of the two connection rows 4 is the positive connection row 41, and the other is the negative connection row 42, and each connection row 4 is connected to multiple sockets 3 and a battery management circuit module 21 to electrically connect the positive conductive structure and the negative conductive structure of the socket 3 to the positive terminal and the negative terminal of the battery cell group 22, respectively.

[0058] Specifically, Figure 2As shown, the connection bar 4 can be made of a conductive metal material such as copper, and can be a hard material. The two connection bars 4 can have the same shape, and the two connection bars 4 can be arranged side by side in the left-right direction. The connection bar 4 on the right side can be a positive electrode connection bar 41, and the connection bar 4 on the left side can be a negative electrode connection bar 42.

[0059] The positive conductive structure of each socket 3 can be directly connected to the positive connection row 41, the negative conductive structure of each socket 3 can be directly connected to the negative connection row 42, and both connection rows 4 are directly electrically connected to the battery management circuit module 21, so that the electrical energy of the battery cell group 22 can be directly transmitted to each socket 3.

[0060] The mobile power supply of this embodiment is provided with a plurality of sockets 3. When in use, different mobile power supplies can be connected in series through the sockets 3, so that a plurality of mobile power supplies can be used in combination, and the overall external voltage formed by the plurality of mobile power supplies can be adjusted, thereby meeting the use needs of different power voltages.

[0061] In some embodiments, Figure 4 As shown, the shell 1 includes a bottom shell 11 and a top cover 12. The top cover 12 is arranged at the top opening of the bottom shell 11. For example, the top cover 12 can be installed and fixed on the top side of the bottom shell 11 by fasteners such as screws and can seal the top side opening of the bottom shell 11, thereby meeting the needs of placing the battery module 2 and taking into account waterproof sealing.

[0062] There are two connectors 3, namely a first connector 31 and a second connector 32, wherein the first connector 31 is provided on the top cover 12, and the second connector 32 is provided on the side wall of the bottom shell 11. Specifically, a mounting opening may be provided on the portion of the top cover 12 near the rear side, and the first connector 31 may pass through the mounting opening and be connected and fixed to the top cover 12 by fasteners. A mounting opening may also be provided on the rear side wall of the bottom shell 11, and the second connector 32 may pass through the mounting opening and be connected and fixed to the bottom shell 11 by fasteners.

[0063] The materials of the bottom shell 11 and the top cover 12 can be different, wherein the material of the bottom shell 11 can be metal, and the material of the top cover 12 can be plastic, etc. Arranging the connectors 3 on different components is conducive to simplifying the processing technology of a single component.

[0064] In some embodiments, the connection row 4 is a straight-line bending structure, and the connection row 4 connects the first socket 31, the second socket 32 ​​and the battery management circuit module 21 in series. The straight-line bending structure mainly refers to the connection row connecting the socket and the circuit management circuit module in sequence, without bifurcation, and does not limit the specific bending shape of the connection row. For example, each connection row 4 can be bent back and forth in the up and down direction or the left and right direction, but each connection row 4 as a whole can extend along the front and back direction. In this way, the space occupied by the connection row 4 can be reduced, which facilitates the installation and arrangement of the connection row 4 in the shell 1.

[0065] In some embodiments, one end of the connection bar 4 is connected to the first socket 31 , the second socket 32 ​​is connected to the middle of the connection bar 4 , and the other end of the connection bar 4 is connected to the battery management circuit module 21 .

[0066] For example, each connection row 4 can be an L-shaped structure, the bottom end of each connection row 4 can be directly connected to the battery management circuit module 21, the middle part of each connection row 4 can be directly connected to the second socket 32, and the top end of each connection row 4 can be directly connected to the first socket 31.

[0067] In some embodiments, the connection bar 4 includes a first end, a second end and a third end, the first end is connected to the first socket 31, the second end is connected to the second socket 32, and the third end is connected to the battery management circuit module 21. For example, the connection bar 4 can be a Y-shaped bifurcated structure, that is, the connection bar 4 has three free ends, and the three free ends are the first end, the second end and the third end. During assembly, the corresponding free ends are respectively connected and fixed to the corresponding components, thereby improving the convenience of connection.

[0068] In some embodiments, the first socket 31 includes a first shell 311, multiple first conductors 312 and a first circuit board 313. The first shell 311 is fixed to the top cover 12 and passes through the top cover 12. The multiple first conductors 312 are all fixed to the first shell 311 and pass through the first shell 311. The first circuit board 313 is arranged on the inner side of the first shell 311. The multiple first conductors 312 are all electrically connected to the first circuit board 313, and the connecting row 4 is electrically connected to the first circuit board 313.

[0069] For example, Figure 5 As shown, the material of the first shell 311 can be plastic, and the first shell 311 can be processed and formed by injection molding. The material of the first conductor 312 can be copper or other materials, and the first conductor 312 can be in the form of a sheet, a needle, etc. Each first conductor 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-right direction.

[0070] The first circuit board 313 may be disposed on the bottom side of the first shell 311, the first circuit board 313 may be connected and fixed to the first shell 311, and the plurality of first conductors 312 may be electrically connected to the first circuit board 313. The positive electrode connection row 41 may be connected to the positive electrode of the first circuit board 313, and the negative electrode connection row 42 may be connected to the negative electrode of the first circuit board 313.

[0071] Thus, the first socket 31 is integrated and modularized, which facilitates the mass production of the first socket 31 and improves the convenience of subsequent installation with the top cover 12. Secondly, the one-piece 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 better waterproof sealing.

[0072] In some embodiments, a glue groove 3111 is disposed on the inner side of the first shell 311 , the plurality of first conductors 312 are all located in the glue groove 3111 , and the glue groove 3111 is filled with sealant.

[0073] For example, Figure 6 As shown, the glue groove 3111 can be provided at the bottom side of the first shell 311, and the glue groove 3111 can be a rectangular groove, and the parts of the plurality of first conductors 312 used to connect with the first circuit board 313 can all be located in the glue groove 3111. During assembly, the waterproof sealant can be directly filled into the glue groove 3111, so as to further enhance the fixing effect of the plurality of first conductors 312 on the one hand, and further improve the waterproof sealing performance on the other hand, and play a role in electrical protection.

[0074] In some embodiments, an annular portion 3112 is provided on the outer side of the first shell 311, and multiple first conductors 312 are all located in the annular portion 3112. The first socket 31 includes a first sealing ring 314 and a second sealing ring 315. The first sealing ring 314 is provided in the annular portion 3112 and surrounds the outer peripheral side of the multiple first conductors 312. The second sealing ring 315 is provided outside the annular portion 3112 and surrounds the outer peripheral side of the annular portion 3112.

[0075] For example, Figure 7 As shown, the annular portion 3112 can be integrally formed on the top side of the first shell 311, and the annular portion 3112 can be substantially in the shape of a square ring. The tops of the plurality of first conductors 312 can all be located within the annular portion 3112. The first sealing ring 314 and the second sealing ring 315 can both be rubber rings, etc., wherein the specification size of the first sealing ring 314 is smaller than the specification size of the second sealing ring 315.

[0076] During assembly, the first sealing ring 314 can be directly placed in the annular portion 3112, and the first sealing ring 314 can surround the outer circumference of the multiple first conductors 312, and the second sealing ring 315 can be fixed to the top side of the first shell 311 by fasteners and surround the outer circumference of the annular portion 3112.

[0077] Therefore, when the first socket 31 is plugged and assembled with the corresponding electrical connector, the first sealing ring 314 and the second sealing ring 315 can both fit and contact with the corresponding end faces of the electrical connector, thereby achieving waterproof sealing between the first socket 31 and the corresponding electrical connector and enhancing safety of use.

[0078] In some embodiments, the second socket 32 ​​includes a second shell 321, multiple second conductors 322 and a second circuit board 323. The second shell 321 is fixed to the shell body 1 and passes through the shell wall of the second shell 321. The multiple second conductors 322 are all fixed to the second shell 321 by ultrasonic welding and pass through the second shell 321. The second circuit board 323 is arranged on the inner side of the second shell 321. The multiple second conductors 322 are all electrically connected to the second circuit board 323, and the connecting row 4 is electrically connected to the second circuit board 323.

[0079] For example, Figure 8 As shown, the material of the second shell 321 can be plastic, the second shell 321 can be processed and formed by injection molding, the material of the second conductor 322 can be copper or other materials, and the second conductor 322 can be a structure such as a spring. Each second conductor 322 can be fixed in the second shell 321 by integral injection molding, and multiple second conductors 322 can be arranged at equal intervals along the left-right direction.

[0080] It should be noted that after the second conductor 322 is fixed in the second shell 321, the connection between the second shell 321 and the second conductor 322 can be secondary processed by ultrasonic welding, thereby ensuring the fixed structural strength of the second conductor 322 and the shell 1, and also ensuring the waterproof sealing between the two.

[0081] The second socket 32 ​​can be disposed on the rear side wall of the bottom shell 11. In this case, the second circuit board 323 can be disposed on the front side of the second shell 321. The second circuit board 323 can be connected and fixed to the second shell 321, and the plurality of second conductors 322 can be electrically connected to the second circuit board 323. The positive electrode connection row 41 can be connected to the positive electrode of the second circuit board 323, and the negative electrode connection row 42 can be connected to the negative electrode of the second circuit board 323.

[0082] Thus, the second socket 32 ​​is integrated and modularized, which facilitates the mass production of the second socket 32 ​​and improves the convenience of subsequent installation with the bottom shell 11. Secondly, the one-piece injection molding and ultrasonic welding method not only meets the need for fixing the second conductor 322, but also ensures that the second conductor 322 and the second shell 321 have good waterproof sealing.

[0083] In some embodiments, a protrusion 3211 is provided on the outer side of the second shell 321 , and multiple second conductors 322 are all disposed in the protrusion 3211 . The second socket 32 ​​includes a third sealing ring 324 , which is disposed on the outer side of the second shell 321 and surrounds the outer peripheral side of the protrusion 3211 .

[0084] For example, Fig. 9 As shown, the protrusion 3211 can be integrally formed on the rear side of the second shell 321. The protrusion 3211 can be rectangular as a whole and extend along the left and right directions. The rear halves of multiple second conductors 322 can all be located in the protrusion 3211, and the second conductors 322 can be integrally fixed to the protrusion 3211 by injection molding.

[0085] The third sealing ring 324 may be a rubber ring, and the third sealing ring 324 may be fixed to the rear side of the second shell 321, and the third sealing ring 324 may surround the outer peripheral side of the protrusion 3211. When the second socket 32 ​​is connected and fixed to the corresponding electrical connector, the third sealing ring 324 may fit and contact with the corresponding end surface of the electrical connector, thereby ensuring the waterproof sealing between the second socket 32 ​​and the electrical connector.

[0086] In some embodiments, Fig.10 As shown, the second socket 32 ​​includes a cover 326, which is rotatably mounted on the outside of the second shell 321. For example, the cover 326 can be mounted on the rear side of the second shell 321 by pivoting, and the cover 326 can be a downward flip cover. When in use, the cover 326 is used to block the outer port of the second shell 321 to hide the plurality of second conductors 322, thereby achieving an isolation and protection effect on the second socket 32.

[0087] The inner side of the cover 326 is provided with an inner lining layer, which is used to be clamped between the cover 326 and the second shell 321 to enhance the sealing between the cover 326 and the second shell 321. For example, the inner lining layer can be foam (EPP), and when the cover 326 is buckled on the second socket 32, the inner lining layer can be clamped between the cover 326 and the second shell 321, thereby improving the sealing between the two.

[0088] In some embodiments, one of the first socket 31 and the second socket 32 ​​is a male socket, and the other is a female socket. For example, the first socket 31 can be a plug assembly (male socket), and the second socket 32 ​​can be a socket assembly (female socket). Thus, the need to connect different types of electrical connectors to the mobile power supply is met, and the flexibility of use is improved.

[0089] In some embodiments, the connecting bar 4 is covered with an insulating sleeve 44, and the insulating sleeve 44 is heat-shrunk and fixed to the outer peripheral side of the connecting bar 4. Fig.11 As shown, the insulating sleeve 44 may be a heat shrink sleeve, and the insulating sleeve 44 may be coated on the outer surface of the connecting bar 4 , thereby improving the insulation protection performance of the connecting bar 4 .

[0090] In some embodiments, the connection row 4 is provided with a raised bending section 43, and the raised bending section 43 is used to buffer the relative displacement between the battery management circuit module 21 and the housing 1. Fig.11 As shown, each connection row 4 may be provided with at least one protruding bending section 43 , the protruding bending section 43 may protrude toward one side of the connection row 4 , and the protruding bending section 43 may be U-shaped as a whole.

[0091] The setting of the raised bending section 43 can make the connecting row 4 have a certain buffer margin. When relative displacement occurs between the battery module 2 and the shell 1, the raised bending section 43 can be elastically deformed, thereby buffering the displacement between the two and improving the installation adaptability of the connecting row 4.

[0092] The energy storage system of an embodiment of the utility model is described below.

[0093] The energy storage system of the embodiment of the utility model includes a plurality of mobile power supplies, each of which can be a mobile power supply as described in any of the above embodiments, and the plurality of mobile power supplies connect the battery cell groups 22 in the plurality of mobile power supplies in series and / or in parallel through the socket 3 in the mobile power supply. For example, two adjacent mobile power supplies can be connected by a connecting line, and the connection of the connecting line can realize the series or parallel connection between the two mobile power supplies.

[0094] The energy storage system of the embodiment of the utility model is composed of a plurality of mobile power supplies, which can be designed to be connected in series or in parallel as needed, so that the output voltage of the energy storage system can be adjusted to meet different electricity usage needs.

[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 mobile power source, characterized in that: include: case; A battery module, the battery module is stored in the housing, and the battery module includes a battery management circuit module and a battery cell group, the battery management circuit module is electrically connected to the positive terminal and the negative terminal of the battery cell group; A plurality of sockets, each of which is disposed on the housing and exposed from an outer surface of the housing, and at least two of which are located on different surfaces of the housing; the sockets include a positive conductive structure and a negative conductive structure; Two connection bars, one of which is a positive connection bar and the other is a negative connection bar, and each of the connection bars is connected to a plurality of the connectors and the battery management circuit module to electrically connect the positive conductive structure and the negative conductive structure of the connector to the positive terminal and the negative terminal of the battery cell group, respectively.

2. The mobile power source according to claim 1, characterized in that: The shell includes a bottom shell and a top cover, wherein the top cover is arranged at the top opening of the bottom shell, and the two connectors are respectively a first connector and a second connector, wherein the first connector is arranged at the top cover, and the second connector is arranged at the side wall of the bottom shell.

3. The mobile power source according to claim 2, characterized in that: The connecting bar is a straight-line bending structure, and the connecting bar connects the first socket, the second socket and the battery management circuit module in series.

4. The mobile power source according to claim 3, characterized in that: One end of the connection bar is connected to the first socket, the second socket is connected to the middle of the connection bar, and the other end of the connection bar is connected to the battery management circuit module.

5. The mobile power source according to claim 2, characterized in that: The connection bar includes a first end, a second end and a third end, the first end is connected to the first socket, the second end is connected to the second socket, and the third end is connected to the battery management circuit module.

6. The mobile power source according to claim 2, characterized in that: The first socket comprises: a first shell, the first shell being fixed to the top cover and passing through the top cover; a plurality of first conductors, each of which is fixed to the first shell and passes through the first shell; A first circuit board is disposed inside the first shell, a plurality of first conductors are electrically connected to the first circuit board, and the connection row is electrically connected to the first circuit board.

7. The mobile power source according to claim 6, characterized in that: A glue groove is provided on the inner side of the first shell, the plurality of first conductors are all located in the glue groove, and the glue groove is filled with sealant.

8. The mobile power source according to claim 6, characterized in that: The outer side of the first shell is provided with an annular portion, and the plurality of first conductors are all located in the annular portion, and the first socket comprises: A first sealing ring, the first sealing ring is arranged in the annular portion and surrounds the outer circumference of the plurality of first conductors; A second sealing ring is arranged outside the annular portion and surrounds the outer circumference of the annular portion.

9. The mobile power source according to claim 2, characterized in that: The second socket comprises: a second shell, the second shell being fixed to the housing and passing through a shell wall of the second shell; A plurality of second conductors, each of which is fixed to the second shell by ultrasonic welding and passes through the second shell; The second circuit board is arranged inside the second shell, the plurality of second conductors are electrically connected to the second circuit board, and the connection row is electrically connected to the second circuit board.

10. The mobile power source according to claim 9, characterized in that: A protrusion is provided on the outer side of the second shell, and a plurality of the second conductors are arranged in the protrusion. The second socket includes a third sealing ring, which is provided on the outer side of the second shell and surrounds the outer peripheral side of the protrusion.

11. The mobile power source according to claim 9, characterized in that: The second socket includes a cover body, which is rotatably assembled on the outside of the second shell, and the cover body is used to seal the outer port of the second shell to hide the plurality of second conductors. An inner lining layer is provided on the inner side of the cover body, and the inner lining layer is used to be clamped between the cover body and the second shell to enhance the sealing between the cover body and the second shell.

12. The mobile power source according to claim 2, characterized in that: One of the first socket and the second socket is a male socket, and the other is a female socket.

13. The mobile power source according to any one of claims 1 to 12, characterized in that: The connecting bar is covered with an insulating sleeve, and the insulating sleeve is heat-shrunk and fixed to the outer peripheral side of the connecting bar; And / or, the connection row is provided with a raised bending section, and the raised bending section is used to buffer the relative displacement between the battery management circuit module and the shell.

14. An energy storage system, characterized in that: It comprises a plurality of mobile power supplies as claimed in any one of claims 1 to 13, wherein the plurality of mobile power supplies are connected in series and / or in parallel via a socket in the mobile power supply.

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