Liquid cooling and energy storage all-in-one machine

Abstract

The utility model belongs to the technical field, and discloses a liquid cooling and energy storage all-in-one machine, which comprises a box body, a battery pack system, a liquid cooling system, a high-voltage box system and an alternating-current power distribution system. The battery pack system comprises a plurality of battery packs connected in parallel, the battery packs, the liquid cooling system, the high-voltage box system and the alternating-current power distribution system are all detachably inserted into the inner wall of the box body, the liquid cooling system is used for cooling the battery packs, and the high-voltage box system is connected with the battery pack system and used for converting low voltage of the battery packs into high voltage. And the alternating-current power distribution system is connected with the high-voltage box system and is used for distributing the high voltage to terminal users. Thus, multiple components forming the liquid cooling and energy storage all-in-one machine are modularly designed and are convenient to mount and dismount, each system can be separately overhauled during overhauling to determine problems, the problem that a single component is difficult to dismount and overhaul is solved, and the overhauling efficiency is improved; a plurality of systems are connected through wire harnesses, so that the problem that wire harnesses are too many and disordered due to the fact that all components are directly installed in the box body is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and in particular to a liquid-cooled energy storage integrated machine. Background Art

[0002] With the continuous development and growth of the domestic energy storage market, my country's cumulative energy storage installed capacity has leapt to the first place in the world. The application of energy storage projects has become more and more extensive, and a complete industrial system has been formed. my country's electrochemical energy storage has entered the industrial scale development. In order to meet the challenges of energy storage safety and better performance, liquid-cooled energy storage systems have emerged. Liquid-cooled energy storage systems are a temperature control technology for battery temperature management. Through the convection heat exchange of the coolant, precise temperature management of each battery cell can be achieved. Liquid-cooled energy storage systems are a more efficient and safer temperature control system.

[0003] The existing liquid-cooled energy storage integrated machine installs the purchased components directly inside the box, and realizes communication and current transmission through wiring harness connections. The wiring harness connections are numerous and messy. If a single component is damaged, a bunch of wiring harnesses need to be removed. During maintenance, each point must be measured separately. It is very inconvenient to use and maintain on the user side, and there are also certain safety risks. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid-cooled energy storage integrated machine. By modularizing the components and connecting the modules through wiring harnesses, the wiring harnesses in the box can be reduced, the wiring harness connections can be more orderly, and it is also convenient to dismantle and repair individual components.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a liquid-cooled energy storage integrated machine, comprising:

[0007] Box;

[0008] A battery pack system, the battery pack system comprising a plurality of battery packs connected in parallel, the battery packs being detachably plugged into the inner wall of the box;

[0009] A liquid cooling system, detachably plugged into the inner wall of the box, the liquid cooling system being used to cool the battery pack;

[0010] A high-voltage box system is detachably plugged into the inner wall of the box body, and the high-voltage box system is connected to the battery pack system to convert the low voltage of the battery pack into a high voltage;

[0011] The AC power distribution system is detachably plugged into the inner wall of the box body, and the AC power distribution system is connected to the high-voltage box system to distribute the high voltage to the end users.

[0012] Preferably, the liquid-cooled energy storage integrated machine also includes a connecting harness system, the connecting harness includes a plurality of power harnesses, adjacent battery packs are connected via the power harnesses, and the high-voltage box system is connected to the battery pack system and the AC power distribution system respectively via the power harnesses.

[0013] Preferably, the connection harness system further includes a plurality of communication harnesses, and the communication harnesses are respectively connected between the battery pack system, the high-voltage box system and the AC power distribution system.

[0014] Preferably, the liquid-cooled energy storage integrated machine also includes a fire protection system, which includes a fire protection main pipeline, multiple fire protection branch pipelines and fire extinguishers, the fire extinguishers are connected to the fire protection main pipeline, and all the fire protection branch pipelines are connected to the fire protection main pipeline at intervals along the fire protection main pipeline.

[0015] Preferably, the fire extinguisher is a fire gas storage tank, and perfluorohexanone is stored in the fire gas storage tank; and / or, the fire protection system also includes a plurality of control valves arranged corresponding to the fire branch pipes, and each control valve is provided at the connection between the fire branch pipe and the fire main pipe.

[0016] Preferably, the box body comprises a box body body, a first door panel and a second door panel, the box body body has a receiving cavity, and the first door panel and the second door panel are rotatably mounted on the box body body respectively;

[0017] Among them, the battery pack system, the liquid cooling system, the high-voltage box system and the AC power distribution system are all arranged in the accommodating cavity.

[0018] Preferably, a partition is further provided in the box body, and the partition divides the accommodating cavity into a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is arranged corresponding to the first door panel, and the second accommodating cavity is arranged corresponding to the second door panel;

[0019] A plurality of groups of battery pack brackets corresponding to the battery packs are arranged at intervals on the cavity wall of the second accommodating cavity, and the battery pack brackets include two support frames, which are symmetrically installed on the cavity walls on opposite sides of the second accommodating cavity, and each group of battery pack brackets is used to install one battery pack.

[0020] Preferably, the support frame is further provided with a guide structure, and the guide structure is used to guide the moving direction of the battery pack during installation; and / or,

[0021] A first slide rail, a second slide rail and a third slide rail are sequentially arranged on the cavity wall of the first accommodating cavity, and the liquid cooling system, the high-voltage box system and the AC power distribution system are sequentially arranged on the first slide rail, the second slide rail and the third slide rail.

[0022] Preferably, a heat sink is installed on the inner side of the second door panel; and / or a folding handle is installed on the outer side of the second door panel; and / or the box body includes an outer box layer and an inner box layer connected to each other, and thermal insulation cotton is provided between the outer box layer and the inner box layer.

[0023] Preferably, the liquid cooling system includes a liquid cooling host, a first main pipe and a second main pipe, the first main pipe and the second main pipe are respectively connected to the liquid cooling host, the first main pipe is provided with a plurality of first branches corresponding to the battery pack, the second main pipe is provided with a plurality of second branches corresponding to the battery pack, the second main pipe, the second branch, the liquid cooling base plate of the battery pack, the first branch and the first main pipe are connected in sequence.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a liquid-cooled energy storage integrated machine, including a box, a battery pack system, a liquid cooling system, a high-voltage box system and an AC power distribution system. The battery pack system includes a plurality of parallel battery packs, which are detachably plugged into the inner wall of the box; the liquid cooling system is detachably plugged into the inner wall of the box, and the liquid cooling system is used to cool the battery pack; the high-voltage box system is detachably plugged into the inner wall of the box, and the high-voltage box system is connected to the battery pack system, and is used to convert the low voltage of the battery pack into a high voltage; the AC power distribution system is detachably plugged into the inner wall of the box, and the AC power distribution system is connected to the high-voltage box system, and is used to distribute the high voltage to the end user.

[0026] In this way, by modularizing the multiple components that make up the liquid-cooled energy storage integrated machine, and these separate systems can be manufactured separately, these systems can be detachably plugged into the inner wall of the box to form a liquid-cooled energy storage integrated machine, which is convenient for installation and disassembly, and during maintenance, each system can be inspected separately to determine the problem, which can save maintenance time, improve maintenance efficiency, and solve the problem of difficulty in removing and repairing a single component; by modularly setting up multiple systems, multiple systems are connected by wiring harnesses, and the wiring harnesses between the components inside the system will not be exposed in the box. There are only connecting harnesses between the systems in the box, which can solve the problem of many and messy wiring harnesses caused by the connection of each component through wiring harnesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the box body of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the battery pack system and the connecting harness system of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the liquid cooling system of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the high-voltage box system of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the AC power distribution system of the utility model;

[0032] Figure 6 It is a structural schematic diagram of the fire protection system of the utility model.

[0033] In the figure:

[0034] 1. Box body; 11. Box body body; 111. First accommodating chamber; 112. Second accommodating chamber; 11a. Outer box layer; 11b. Inner box layer; 12. First door panel; 13. Second door panel; 131. Heat sink; 14. Partition; 15. Support frame; 16. First slide rail; 17. Second slide rail; 18. Third slide rail; 2. Battery pack; 21. Liquid cooling base plate; 3. Liquid cooling system; 31. Liquid cooling host; 311. Liquid inlet pipe; 312. Liquid outlet pipe; 32. First main pipeline; 33. Second main pipeline; 34. First branch pipe; 35. Second branch pipe; 36. Connecting valve; 37. Exhaust valve; 38. Drain valve; 4. High-voltage box system; 5. AC power distribution system; 6. Power harness; 7. Fire protection system; 71. Fire protection main pipeline; 72. Fire protection branch pipeline; 73. Fire extinguisher; 74. Control valve; 75. Fire protection detection module. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] See also Figures 1 to 5 The utility model provides a liquid-cooled energy storage integrated machine, including a box 1, a battery pack system, a liquid cooling system 3, a high-voltage box system 4 and an AC power distribution system 5. The battery pack system includes a plurality of parallel battery packs 2, and the battery pack 2 is detachably plugged into the inner wall of the box 1. The liquid cooling system 3 is detachably plugged into the inner wall of the box 1, and the liquid cooling system 3 is used to cool the battery pack 2; the high-voltage box system 4 is detachably plugged into the inner wall of the box 1, and the high-voltage box system 4 is connected to the battery pack system, and is used to convert the low voltage of the battery pack 2 into a high voltage. The AC power distribution system 5 is detachably plugged into the inner wall of the box 1, and the AC power distribution system 5 is connected to the high-voltage box system 4, and is used to distribute the high voltage to the end user.

[0040] Among them, in this embodiment, the battery pack system, liquid cooling system 3, high-voltage box system 4 and AC power distribution system 5 are plugged and installed, similar to the installation of a drawer, so that installation and disassembly are convenient. In addition, in this embodiment, the battery pack system includes eight battery packs 2. It can be understood that the number of battery packs 2 included in each battery pack system can be set according to actual use needs, and is not limited to this embodiment.

[0041] In this way, by modularizing the multiple components that make up the liquid-cooled energy storage integrated machine, they are designed as a battery pack system, a liquid cooling system 3, a high-voltage box system 4 and an AC power distribution system 5, and these separate systems can be manufactured separately. These systems can be detachably plugged into the inner wall of the box body 1 to form a liquid-cooled energy storage integrated machine, which is convenient for installation and disassembly, and during maintenance, each system can be inspected separately to determine the problem, which can save maintenance time, improve maintenance efficiency, and solve the problem of difficulty in removing and repairing a single component; moreover, by modularly setting up multiple systems, multiple systems are connected by wiring harnesses, and the wiring harnesses between the components inside the system will not be exposed in the box body 1. There are only connecting wiring harnesses between the systems in the box body 1, which can solve the problem of many and messy wiring harnesses caused by the connection of each component by wiring harnesses.

[0042] See also Figure 2 , Figure 4 and Figure 5 In some embodiments, the liquid-cooled energy storage integrated machine further includes a connection harness system, the connection harness includes a plurality of power harnesses 6, adjacent battery packs 2 are connected via the power harnesses 6, and the high-voltage box system 4 is connected to the battery pack system and the AC power distribution system 5 via the power harnesses 6. The power harnesses 6 are used to transmit electrical energy.

[0043] See also Figure 4 and Figure 5 In some embodiments, the connection harness system further includes a plurality of communication harnesses (not shown in the figure), and communication harnesses are respectively connected between the battery pack system, the high voltage box system 4 and the AC power distribution system 5. The communication harnesses are used to transmit signals, that is, the signals between the systems in this embodiment are transmitted by wire.

[0044] See also Figure 6 In some embodiments, the liquid-cooled energy storage integrated machine further includes a firefighting system 7, which includes a firefighting main pipe 71, a plurality of firefighting branch pipes 72, and a firefighting device 73. The firefighting device 73 is connected to the firefighting main pipe 71, and all the firefighting branch pipes 72 are connected to the firefighting main pipe 71 at intervals along the firefighting main pipe 71. The number of firefighting branch pipes is the same as that of the battery pack 2, and the end of the firefighting branch pipe away from the firefighting main pipe 71 is arranged corresponding to the battery pack 2, and is used to spray a firefighting medium to the battery pack 2 to extinguish the fire.

[0045] In this way, by setting up the fire protection system 7, thermal runaway detection can be better performed, thereby preventing emergencies and extinguishing fires in a timely manner.

[0046] In some embodiments, the fire extinguisher 73 is a fire gas storage tank, and the fire gas storage tank stores perfluorohexanone. It is understandable that other fire-fighting media can be selected according to actual use needs, and are not limited to the perfluorohexanone used in this embodiment.

[0047] See also Figure 6 In some embodiments, the fire protection system 7 further includes a plurality of control valves 74 corresponding to the fire protection branch pipes 72, and a control valve 74 is provided at the connection between each fire protection branch pipe 72 and the fire protection main pipe 71. Thus, by opening the control valve 74, the fire protection medium can be sprayed out to extinguish the fire, and the control valve 74 can be closed when not needed, which is simple and convenient to operate.

[0048] See also Figure 6 In some embodiments, the fire protection system 7 also includes a fire protection detection module 75 that is communicatively connected to the control valve 74. The fire protection detection module 75 of this embodiment is an integrated detection module that can be used to detect the pressure, temperature, humidity, combustible gas and hydrogen of the corresponding battery pack 2. When an abnormal signal is detected, the fire protection detection module 75 can trigger the corresponding fire protection valve to open so that the fire protection medium can be sprayed out to extinguish the fire.

[0049] See also Figure 1 In some embodiments, the box 1 includes a box body, a first door panel 12 and a second door panel 13. The box body has a receiving cavity. The first door panel 12 and the second door panel 13 are rotatably mounted on the box body. The battery pack system, the liquid cooling system 3, the high-voltage box system 4 and the AC power distribution system 5 are all arranged in the receiving cavity.

[0050] It is understandable that the box body and the first door panel 12 and the second door panel 13 can be connected by hinges, so as to achieve a rotation connection so as to open and close the first door panel 12 and the second door panel 13.

[0051] See also Figure 1 In some embodiments, a partition 14 is further provided in the box body, and the partition 14 divides the accommodating cavity into a first accommodating cavity 111 and a second accommodating cavity 112. The first accommodating cavity 111 is provided corresponding to the first door panel 12, and the second accommodating cavity 112 is provided corresponding to the second door panel 13. A plurality of groups of battery pack brackets corresponding to the battery pack 2 are provided on the cavity wall of the second accommodating cavity 112 at intervals, and the battery pack brackets include two support frames 15, and the two support frames 15 are symmetrically installed on the cavity walls of the second accommodating cavity 112 on opposite sides, and each group of battery pack brackets is used to install a battery pack 2.

[0052] In some embodiments, a guide structure (not shown in the figure) is further provided on the support frame 15, and the guide structure is used to guide the moving direction of the battery pack 2 during installation. It can be understood that the specific structure of the guide structure can be set according to actual use needs. In this embodiment, the guide structure is a guide plate.

[0053] See also Figure 1In some embodiments, a first slide rail 16, a second slide rail 17 and a third slide rail 18 are sequentially arranged on the cavity wall of the first accommodating cavity 111, and the liquid cooling system 3, the high-voltage box system 4 and the AC power distribution system 5 are sequentially arranged on the first slide rail 16, the second slide rail 17 and the third slide rail 18.

[0054] See also Figure 1 In some embodiments, a heat sink 131 is installed on the inner side of the second door panel 13. Optionally, the heat sink 131 is a fan, and one or more fans can be provided according to actual use needs, so as to effectively circulate air for heat exchange and improve the heat dissipation efficiency of the battery pack 2.

[0055] In some embodiments, a folding handle (not shown) is installed on the outer side of the second door panel 13 so as to open and close the second door panel 13 .

[0056] See also Figure 1 In some embodiments, the box body includes an outer box layer 11a and an inner box layer 11b connected to each other, and a heat insulation cotton (not shown in the figure) is arranged between the outer box layer 11a and the inner box layer 11b. In this way, the heat insulation cotton can play a role in earthquake resistance and heat preservation.

[0057] See also Figure 3 In some embodiments, the liquid cooling system 3 includes a liquid cooling host 31, a first main pipe 32 and a second main pipe 33. The first main pipe 32 and the second main pipe 33 are respectively connected to the liquid cooling host 31. The first main pipe 32 is provided with a plurality of first branch pipes 34 corresponding to the battery pack 2. The second main pipe 33 is provided with a plurality of second branch pipes 35 corresponding to the battery pack 2. The second main pipe 33, the second branch pipe 35, the liquid cooling base plate 21 of the battery pack 2, the first branch pipe 34 and the first main pipe 32 are connected in sequence.

[0058] The liquid cooling host 31 stores a cooling medium, and the battery pack 2 is cooled by circulating the cooling medium. The second main pipe 33 and the first branch pipe 34 are connected by a connecting valve 36, and the second branch pipe 35 and the first main pipe 32 are connected by a connecting valve 36. Optionally, the cooling medium is cooling water.

[0059] It should be noted that, in this embodiment, the liquid cooling base plate 21 is provided with a plurality of liquid cooling pipes corresponding to the battery pack 2, and the liquid cooling pipes are connected with the first branch pipe 34 and the second branch pipe 35, so as to realize heat dissipation of the battery pack 2, so as to achieve balanced temperature control of the battery pack 2. The liquid cooling main unit 31 is provided with a liquid inlet pipe 311 and a liquid outlet pipe 312, the first main pipe 32 is connected to the liquid inlet pipe 311 through an exhaust valve 37, and the second main pipe 33 is connected to the liquid outlet pipe 312 through an exhaust valve 37, and the exhaust valve 37 is used to discharge the gas in the cooling medium.

[0060] See also Figure 3In some embodiments, the liquid cooling system 3 further includes two drain valves 38, one of which is disposed at one end of the second main pipe 33 away from the liquid cooling host 31, and the other drain valve 38 is disposed at one end of the first main pipe 32 away from the liquid cooling host 31. In this way, when necessary, for example, when maintenance is required or when not used for a long time, the corresponding drain valve 38 can be opened to discharge the cooling medium in the first main pipe 32 and the second main pipe 33.

[0061] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A liquid-cooled energy storage integrated machine, characterized in that: include: Box body (1); A battery pack system, the battery pack system comprising a plurality of battery packs (2) connected in parallel, the battery packs (2) being detachably plugged into the inner wall of the box body (1); A liquid cooling system (3) is detachably plugged into the inner wall of the box body (1), and the liquid cooling system (3) is used to cool the battery pack (2); A high-voltage box system (4) is detachably plugged into the inner wall of the box body (1), and the high-voltage box system (4) is connected to the battery pack system and is used to convert the low voltage of the battery pack (2) into a high voltage; The AC power distribution system (5) is detachably plugged into the inner wall of the box body (1); the AC power distribution system (5) is connected to the high-voltage box system (4) and is used to distribute the high voltage to terminal users.

2. The liquid-cooled energy storage integrated machine according to claim 1, characterized in that: The liquid-cooled energy storage integrated machine also includes a connection harness system, wherein the connection harness includes a plurality of power harnesses (6), adjacent battery packs (2) are connected via the power harnesses (6), and the high-voltage box system (4) is connected to the battery pack system and the AC power distribution system (5) respectively via the power harnesses (6).

3. The liquid-cooled energy storage integrated machine according to claim 2, characterized in that: The connection harness system also includes a plurality of communication harnesses, and the battery pack system, the high-voltage box system (4) and the AC power distribution system (5) are respectively connected with the communication harnesses.

4. The liquid-cooled energy storage integrated machine according to claim 1, characterized in that: The liquid-cooled energy storage integrated machine further comprises a fire protection system (7), the fire protection system (7) comprising a fire protection main pipeline (71), a plurality of fire protection branch pipelines (72) and a fire extinguisher (73), the fire extinguisher (73) being connected to the fire protection main pipeline (71), and all the fire protection branch pipelines (72) being connected to the fire protection main pipeline (71) at intervals along the fire protection main pipeline (71).

5. The liquid-cooled energy storage integrated machine according to claim 4, characterized in that: The fire extinguisher (73) is a fire gas storage tank, in which perfluorohexanone is stored; and / or the fire fighting system (7) further comprises a plurality of control valves (74) arranged corresponding to the fire fighting branch pipes (72), wherein each of the fire fighting branch pipes (72) is provided with a control valve (74) at the connection between the fire fighting main pipe (71).

6. The liquid-cooled energy storage integrated machine according to claim 1, characterized in that: The box body (1) comprises a box body main body, a first door panel (12) and a second door panel (13); the box body main body has a receiving cavity; the first door panel (12) and the second door panel (13) are respectively rotatably mounted on the box body main body; Wherein, the battery pack system, the liquid cooling system (3), the high-voltage box system (4) and the AC power distribution system (5) are all arranged in the accommodating cavity.

7. The liquid-cooled energy storage integrated machine according to claim 6, characterized in that: A partition (14) is also provided in the box body, and the partition (14) divides the accommodating cavity into a first accommodating cavity (111) and a second accommodating cavity (112), wherein the first accommodating cavity (111) is arranged correspondingly to the first door panel (12), and the second accommodating cavity (112) is arranged correspondingly to the second door panel (13); A plurality of groups of battery pack brackets corresponding to the battery packs (2) are arranged at intervals on the cavity wall of the second accommodating cavity (112), the battery pack brackets comprising two support frames (15), the two support frames (15) being symmetrically mounted on the cavity walls on opposite sides of the second accommodating cavity (112), and each group of the battery pack brackets being used to mount one of the battery packs (2).

8. The liquid-cooled energy storage integrated machine according to claim 7, characterized in that: The support frame (15) is also provided with a guide structure, wherein the guide structure is used to guide the movement direction of the battery pack (2) during installation; and / or, A first slide rail (16), a second slide rail (17) and a third slide rail (18) are sequentially arranged on the cavity wall of the first accommodating cavity (111); the liquid cooling system (3), the high-voltage box system (4) and the AC power distribution system (5) are sequentially arranged on the first slide rail (16), the second slide rail (17) and the third slide rail (18).

9. The liquid-cooled energy storage integrated machine according to claim 6, characterized in that: A heat sink (131) is installed on the inner side of the second door panel (13); and / or a folding handle is installed on the outer side of the second door panel (13); and / or the box body comprises an outer box layer (11a) and an inner box layer (11b) which are connected to each other, and thermal insulation cotton is provided between the outer box layer (11a) and the inner box layer (11b).

10. The liquid-cooled energy storage integrated machine according to claim 1, characterized in that: The liquid cooling system (3) comprises a liquid cooling main unit (31), a first main pipe (32) and a second main pipe (33); the first main pipe (32) and the second main pipe (33) are respectively connected to the liquid cooling main unit (31); a plurality of first branch pipes (34) corresponding to the battery pack (2) are provided on the first main pipe (32); a plurality of second branch pipes (35) corresponding to the battery pack (2) are provided on the second main pipe (33); the second branch pipes (35), the liquid cooling bottom plate (21) of the battery pack (2), the first branch pipe (34) and the first main pipe (32) are connected in sequence.

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