Energy storage cabinet

Abstract

The utility model discloses an energy storage cabinet which comprises a cabinet body, and an installation cavity is defined by the cabinet body. And the energy storage converter is arranged in the mounting cavity. The liquid cooling unit is arranged in the mounting cavity, the liquid cooling unit and the energy storage converter each comprise an air inlet and an air outlet, the air inlets of the liquid cooling unit and the energy storage converter face the same side of the third direction, and first air inlet holes are formed in the side, close to the air inlets, of the cabinet body; the side, away from the air inlet, of the cabinet body is provided with air outlet holes corresponding to air outlets of the energy storage converter and the liquid cooling unit. And the flow guide assemblies are arranged corresponding to the energy storage converter and the liquid cooling unit, each flow guide assembly forms a flow guide channel, the flow guide channels are used for guiding gas of the air outlets towards the corresponding air outlet holes, and the gas blown out of the air outlets can only flow out of the air outlet holes along the corresponding flow guide channels. The energy storage cabinet is high in integration level, high in heat dissipation efficiency, long in service life and low in later maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to an energy storage cabinet. Background Art

[0002] With the continuous advancement and application of new energy storage technology, modular industrial and commercial energy storage cabinets will continue to attract market attention and favor. The flexibility, convenience and reliability of energy storage cabinets make them an ideal choice to meet industrial and commercial energy storage needs. The energy storage cabinet includes a cabinet body, which is equipped with a power storage converter (PCS), a liquid cooling unit, a high-voltage box and a battery pack.

[0003] On the one hand, in existing energy storage cabinets, energy storage inverters and liquid cooling units usually use air cooling to dissipate heat. The fixed air inlet and outlet methods require ventilation and heat dissipation holes to be opened in the front and back of the cabinet, and installation channels and heat dissipation space need to be reserved around the two. The hot air generated by the air outlets of the energy storage inverter and the liquid cooling unit is not discharged outside the energy storage cabinet through a dedicated air duct, which easily forms an unfavorable heat cycle with the air inlet, thereby affecting the heat dissipation efficiency and service life. On the other hand, in existing energy storage cabinets, the layout of various components is unreasonable, resulting in poor stability of the entire energy storage cabinet and certain safety hazards. Therefore, how to reasonably arrange the energy storage cabinet and improve the heat dissipation effect of the energy storage inverter and liquid cooling unit therein has become a technical problem to be solved. Utility Model Content

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide an energy storage cabinet with high integration, high heat dissipation efficiency, long service life and low subsequent maintenance cost.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: an energy storage cabinet, comprising:

[0006] A cabinet body, wherein the cabinet body defines a mounting cavity;

[0007] An energy storage converter, wherein the energy storage converter is arranged in the installation cavity;

[0008] A liquid cooling unit, wherein the liquid cooling unit is arranged in the installation cavity, the liquid cooling unit and the energy storage converter both include an air inlet and an air outlet, the air inlets of the liquid cooling unit and the energy storage converter both face the same side of the third direction, a first air inlet is provided on a side of the cabinet body close to the air inlet, and air outlets corresponding to the air outlets of the energy storage converter and the liquid cooling unit are provided on a side of the cabinet body away from the air inlet;

[0009] A guide component is arranged corresponding to the energy storage inverter and the liquid cooling unit, each of the guide components forms a guide channel, and the guide channel is used to guide the gas from the air outlet toward the corresponding air outlet hole, and the gas blown out of the air outlet can only flow out from the air outlet hole along the corresponding guide channel.

[0010] The beneficial effect of the utility model is that for two devices with high heat dissipation requirements, namely the liquid cooling unit and the energy storage inverter, guide components are respectively provided at the two corresponding air outlet positions, and the guide components guide the gas at the air outlet so that it can only flow out of the cabinet from the air outlet, thereby achieving cooling of the liquid cooling unit and the energy storage inverter, avoiding the formation of adverse thermal cycles with the air inlets of the liquid cooling unit and the energy storage inverter, and affecting the heat dissipation efficiency and service life.

[0011] Further, each of the guide components includes an upper guide plate, a lower guide plate, a left guide plate and a right guide plate, and the upper guide plate, the lower guide plate, the left guide plate and the right guide plate define a guide channel extending along a third direction, and the air outlet is embedded in the guide channel, and the upper guide plate, the lower guide plate, the left guide plate and the right guide plate all extend along the third direction and directly guide the gas from the air outlet to the corresponding air outlet.

[0012] The structure of the guide component wraps the air outlet so that the gas at the air outlet can only flow along the guide channel, thereby preventing the high-temperature gas passing through the liquid cooling unit and the energy storage inverter from diffusing or flowing back in the placement cavity.

[0013] Furthermore, a fixing plate is also provided in the installation cavity, and the fixing plates are located on both sides of the liquid cooling unit along the first direction, and the liquid cooling unit is fixedly connected to the fixing plate through a connecting ear on one side close to the first air inlet in the third direction.

[0014] When the liquid cooling unit is fixed to the fixing plate, the liquid cooling unit is in direct contact with the fixing plate at a side close to the first air inlet in the third direction.

[0015] After the fixing plate and the liquid cooling unit are fixed, there is no gap between the fixing plate and the liquid cooling unit, ensuring that the air inlet of the liquid cooling unit will not absorb hot air from the air outlet at the rear end of the liquid cooling unit when working, avoiding the formation of undesirable heat circulation and realizing one-way flow of gas.

[0016] Furthermore, shutters are respectively arranged at the air outlets corresponding to the air outlets of the energy storage converter and the liquid cooling unit, and the upper guide plate, the lower guide plate, the left guide plate and the right guide plate are against the corresponding shutters. The shutters form a tortuous air duct, effectively preventing the entry of foreign matter from the outside.

[0017] Furthermore, a tray is provided in the installation cavity and is located directly below the liquid cooling unit. The tray is used to collect condensed water generated by the liquid cooling unit. The tray collects condensed water to prevent the condensed water from leaking in the placement cavity.

[0018] Furthermore, the lower guide plate of the flow guide assembly corresponding to the liquid cooling unit is tilted, the high end of the lower guide plate is fixed to the tray, and a drain port is provided on the side of the tray close to the lower guide plate. The condensed water collected by the tray flows into the lower guide plate through the drain port and is discharged out of the cabinet under the guidance of the lower guide plate. At this time, the lower guide plate can be used as a guide for gas as well as a guide for condensed water.

[0019] Further, the installation cavity is divided into a first cavity, a second cavity and a third cavity by a partition, the second cavity and the third cavity are distributed along the second direction, and the second cavity is located above the third cavity, and the first cavity is arranged on the same side of the second cavity and the third cavity in the first direction;

[0020] The energy storage converter is located in the first cavity;

[0021] The liquid cooling unit is located in the second cavity, a conducting hole for connecting the second cavity and the first cavity is provided on the partition between the second cavity and the first cavity, and a high-pressure box located below the liquid cooling unit is also provided in the second cavity;

[0022] The third cavity is provided with a plurality of battery packs along the second direction, and the liquid cooling unit can provide cooling medium for each battery pack.

[0023] The interior of the energy storage cabinet is divided into three chambers: the first chamber, the second chamber, and the third chamber. The layout of the energy storage inverter, liquid cooling unit, high-voltage box, and battery pack in the energy storage cabinet is adjusted to achieve separation of the high-voltage position and the low-voltage position, which is highly safe. At the same time, the second chamber and the third chamber are isolated, because the liquid cooling unit installed in the second chamber is prone to condensation and leakage. The separated second and third chambers achieve dry and wet separation to prevent the battery pack from getting damp. Furthermore, the energy storage inverter, liquid cooling unit, and high-voltage box are placed above the battery pack to avoid the risk of overturning during transportation due to the "top-heavy" problem of the energy storage outdoor cabinet, so that the center of gravity of the entire cabinet is lowered, and the energy storage cabinet is more stable.

[0024] Furthermore, the liquid cooling unit includes a water inlet main pipe and a water outlet main pipe, and each of the battery packs also includes a water inlet branch pipe connected to the water inlet main pipe and a water outlet branch pipe connected to the water outlet main pipe, and each of the water inlet branch pipe and the water outlet branch pipe is provided with a stop valve. When the corresponding battery pack or branch pipe needs to be replaced, the corresponding stop valve can be closed to reduce the large outflow of cooling medium and thus reduce safety hazards.

[0025] Furthermore, a power distribution unit located below the energy storage converter is also provided in the first cavity, and the first air inlet is provided at a position corresponding to the cabinet and the power distribution unit.

[0026] Furthermore, the cabinet comprises:

[0027] A cabinet body, wherein the cabinet body defines a mounting cavity with openings at both ends in a third direction;

[0028] An opening and closing door, which is hinged to the cabinet body and can close an opening of the cabinet body, wherein the first air inlet hole is provided on the opening and closing door;

[0029] A rear cover plate is detachably connected to the cabinet body, and the rear cover plate can close another opening of the cabinet body. The air outlet is provided on the rear cover plate.

[0030] The structure of the cabinet allows the components placed in the cavity to be repaired or replaced from both the front and rear directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0032] Figure 2 This is a side view and a partial method diagram of removing a plate of the cabinet body in this embodiment;

[0033] Figure 3 This is a rear view of the embodiment in which the rear cover A and the rear cover C are removed;

[0034] Figure 4 Schematic diagram of the structure of the flow guide component A in this embodiment;

[0035] Figure 5 It is a front view of an embodiment of the utility model;

[0036] Figure 6 It is a rear view of an embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the three-dimensional structure of the cabinet in the embodiment of the utility model;

[0038] Figure 8 An exploded view of the shutter B and the insect-proof module in the embodiment of the utility model;

[0039] Fig. 9 It is an exploded view of the shutter C and the dustproof module in the embodiment of the utility model.

[0040] In the figure:

[0041] 1. Cabinet; 11. First cavity; 111. Conducting hole; 12. Second cavity; 121. Fixing plate; 13. Third cavity; 14. Cabinet body; 151. First opening and closing door; 1511. First air inlet; 152. Second opening and closing door; 161. Rear cover A; 1611. First air outlet; 162. Rear cover B; 163. Rear cover C; 1631. Second air outlet; 164. Rear cover D; 1641. Third air outlet;

[0042] 2. Energy storage converter; 21. Air inlet A; 22. Air outlet A;

[0043] 3. Power distribution unit;

[0044] 4. Liquid cooling unit; 41. Air inlet B; 42. Air outlet B; 43. Tray; 431. Drain; 44. Main water inlet pipeline; 45. Main water outlet pipeline;

[0045] 5. High voltage box;

[0046] 6. Battery pack; 61. Water inlet branch pipe; 62. Water outlet branch pipe; 63. Stop valve;

[0047] 71. guide assembly B; 711. upper guide plate B; 712. lower guide plate B; 713. left guide plate B; 714. right guide plate B; 72. guide assembly A; 721. upper guide plate A; 722. lower guide plate A; 723. left guide plate A; 724. right guide plate A;

[0048] 81. Venetian blinds B; 811. Anti-insect module; 8111. Metal mesh; 8112. Fixing frame; 82. Venetian blinds C; 821. Anti-dust module; 8211. Filter cotton; 8212. Profile frame; 822. Quick fixings. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0050] See attached Figure 1 and attached Figure 7 As shown, an energy storage cabinet of the utility model includes a cabinet body 1, which defines an installation cavity, and the installation cavity is divided into a first cavity 11, a second cavity 12 and a third cavity 13 by a partition. The first cavity 11 is located on the same side of the second cavity 12 and the third cavity 13 along the first direction (X direction), and electrical components are stored in the first cavity 11. The second cavity 12 and the third cavity 13 are arranged along the second direction (Z direction). The second cavity 12 is located above the first cavity 11, and an organic group component is stored in the second cavity 12, and a battery component is stored in the third cavity 13.

[0051] The electrical components include an energy storage inverter 2 and a power distribution unit 3 (PDU, Power Distribution Unit) arranged vertically, the unit components include a liquid cooling unit 4 and a high-voltage box 5 arranged vertically, and the battery component includes multiple battery packs 6 arranged vertically. The liquid cooling unit 4 provides a cooling medium for each battery pack 6 for cooling the battery pack 6.

[0052] In this embodiment, the interior of the energy storage cabinet is divided into three chambers, namely, a first cavity 11, a second cavity 12 and a third cavity 13. The layout of the energy storage inverter 2, the liquid cooling unit 4, the high-voltage box 5 and the battery pack 6 in the energy storage cabinet is adjusted, wherein the second cavity 12 and the third cavity 13 are the high-voltage positions of the equipment, and the first cavity 11 is the low-voltage position of the equipment. The relative liquid cooling unit 4, the energy storage inverter 2, the battery pack 6 and the high-voltage box 5 are located in the same chamber. The layout in this embodiment achieves separation of the high-pressure position and the low-pressure position, and has high safety. At the same time, the second cavity 12 and the third cavity 13 are isolated, because the liquid cooling unit 4 arranged in the second cavity 12 is prone to condensation and leakage. The separated second cavity 12 and the third cavity 13 achieve dry-wet separation to prevent the battery pack 6 from getting damp. Furthermore, the energy storage inverter 2, the liquid cooling unit 4 and the high-voltage box 5 are placed above the battery pack 6 to avoid the risk of tipping over during transportation due to the "top-heavy" problem of the energy storage outdoor cabinet, so that the center of gravity of the entire cabinet body 1 is lowered, and the energy storage cabinet is more stable.

[0053] See attached Figure 3 and attached Figure 5 As shown, the energy storage converter 2 includes an air inlet A21 and an air outlet A22, and the liquid cooling unit 4 includes an air inlet B41 and an air outlet B42. The air inlet A21 and the air inlet B41 face the same side of the third direction (the front side of the Y direction), and the air outlet A22 and the air outlet B42 face the other side of the third direction (the rear side of the Y direction). Figure 7 As shown, the cabinet 1 is provided with a first air inlet hole 1511 on one side (Y-front side) close to the air inlet. The first air inlet holes 1511 are provided in a plurality and arranged in an array. The first air inlet holes 1511 are provided at a position corresponding to the power distribution unit 3. The first air inlet hole 1511 is connected to the external space and the installation cavity. Figure 6 As shown, a second air outlet hole 1631 and a first air outlet hole 1611 corresponding to the air outlets of the energy storage inverter 2 and the liquid cooling unit 4 respectively are provided on one side of the cabinet 1 close to the air outlet (the rear side in the Y direction), and a conducting hole 111 for connecting the second cavity 12 and the first cavity 11 is provided on the partition between the two.

[0054] The energy storage inverter 2 and the liquid cooling unit 4 both use air cooling to dissipate heat. Both the energy storage inverter 2 and the liquid cooling unit 4 include built-in fans, which provide power for the airflow to flow from the air inlet to the air outlet. The air with a lower external temperature enters the installation cavity from the first air inlet 1511. Under the action of the fan, a part of the air enters the interior of the energy storage inverter 2 from the air inlet A21, and the other part enters the second cavity 12 from the conduction hole 111, and enters the interior of the liquid cooling unit 4 from the air inlet B41, and then flows out of the energy storage inverter 2 and the liquid cooling unit 4 from the air outlet A22 and the air outlet B42 respectively. The gas flowing out of the air outlet A22 and the air outlet B42 takes away the temperature inside the energy storage inverter 2 and the liquid cooling unit 4, and is discharged from the placement cavity from the second air outlet 1631 and the first air outlet 1611 respectively.

[0055] There are gaps between the air outlet A22 and the air outlet B42 and the second air outlet 1631 and the first air outlet 1611, respectively. At this time, the hot air generated by the air outlet A22 and the air outlet B42 is not discharged outside the energy storage cabinet through a dedicated air duct, which is easy to form an unfavorable heat cycle with the air inlet, thereby affecting the heat dissipation efficiency and service life. Therefore, in one embodiment, see the attached Figure 2 and attached Figure 3 As shown, a guide component is also provided at the air outlet A22 and the air outlet B42, respectively, and the guide component forms a guide channel, and the guide channel is used to guide the gas blown out of the air outlet A22 toward the second air outlet 1631 or to guide the gas blown out of the air outlet B42 toward the first air outlet 1611. The air outlet A22 and the air outlet B42 are respectively embedded in the corresponding guide channels, and the gas blown out of the air outlet A22 can only flow out of the second air outlet 1631 along the corresponding guide channel, and the gas blown out of the air outlet B42 can only flow out of the first air outlet 1611 along the corresponding guide channel ( Figure 3 (direction of the hollow arrow in the figure).

[0056] The first air outlet holes 1611 are arranged in an array, and a shutter B81 in contact with the first air outlet holes 1611 is fixed in the second cavity 12. The guide assembly corresponding to the air outlet B42 is the guide assembly B71, see the attached Figure 2 and attached Figure 3As shown, the guide assembly B71 includes an upper guide plate B711, a lower guide plate B712, a left guide plate B713 and a right guide plate B714 fixed in the second cavity 12. The upper guide plate B711 and the lower guide plate B712 are respectively located on both sides of the air outlet B42 in the Z direction, and the left guide plate B713 and the right guide plate B714 are respectively located on both sides of the air outlet B42 in the X direction. The guide assembly B71 can wrap up the air outlet B42. The upper guide plate B711, the lower guide plate B712, the left guide plate B713 and the right guide plate B714 define a guide channel B extending along the third direction, and the four guide plates all extend along the third direction to contact the louver B81, and the air outlet B42 is located in the guide channel B. The hot air coming out of the air outlet B42 will directly flow out from the first air outlet 1611 along the guide channel B through the guidance of the louver B81.

[0057] See attached Figure 3 and attached Figure 4 As shown, the guide assembly corresponding to the air outlet A22 is the guide assembly A72, which has the same principle and structure as the guide assembly B71, and also includes an upper guide plate A721, a lower guide plate A722, a left guide plate A723 and a right guide plate A724, which extend along the third direction to contact the shutter A at the second air outlet 1631. The guide assembly A72 is fixed to the housing of the energy storage converter 2.

[0058] See attached Figure 8 As shown, the shutter B81 has the same structure as the shutter A, both of which include a shutter body. The shutter B81 and the shutter A can also be detachably connected with an anti-insect module 811, and the anti-insect module 811 includes a metal mesh 8111 and a fixing frame 8112 supporting the metal mesh 8111, and the fixing frame 8112 and the shutter body are detachably connected by bolts, magnetic suction, etc. The density of the metal mesh 8111 can be selected according to the use environment of the equipment. Shutters are set at the first air outlet 1611 and the second air outlet 1631 to effectively prevent flying insects from entering.

[0059] In one embodiment, shutters may not be provided at the first air outlet 1611 and the second air outlet 1631. In this case, the guide component B71 directly abuts against the cabinet 1 at the first air outlet 1611, and the guide component A72 directly abuts against the cabinet 1 at the second air outlet 1631.

[0060] In this embodiment, during the operation of the liquid cooling unit 4 and the energy storage converter 2, the wind pressure generated by the operation of the fans of the liquid cooling unit 4 and the energy storage converter 2, under the action of the wind pressure, the first air inlet 1511 takes in air, and a part of the air entering the first cavity 11 is used by the energy storage converter 2, and the generated hot air passes through the guide component A72 and is discharged from the cabinet 1 through the louver A, completing the heat exchange. Another part of the air enters the second cavity 12 and is passed through the air inlet B41 of the liquid cooling unit 4, and the generated hot air passes through the guide component B71 and is discharged from the cabinet 1 through the louver B81, completing the heat exchange. For equipment with high heat dissipation requirements such as the liquid cooling unit 4 and the energy storage converter 2, the guide component B and the guide component A are respectively set at the corresponding air outlet positions to avoid forming an unfavorable thermal cycle with the air inlet of the liquid cooling unit 4 and the energy storage converter 2, which affects the heat dissipation efficiency and service life.

[0061] In one embodiment, the first air inlet holes 1511 are arranged in an array, and a shutter C82 is provided at the first air inlet holes 1511. Fig. 9 As shown, the shutter C82 includes a shutter body, and the shutter C82 has the same structure as the shutter B81. The shutter C82 is also detachably connected with a dustproof module 821. The dustproof module 821 includes filter cotton 8211 and a profile frame 8212 for fixing the filter cotton 8211. The profile frame 8212 and the corresponding shutter body are fixedly connected by a quick fixing member 822. The density of the filter cotton 8211 can be selected according to the use environment of the equipment. The quick fixing member 822 can be a bolt, a positioning pin, or a rotating block structure that can rotate along the shutter body, as long as it can achieve quick disassembly.

[0062] When the equipment is in operation, dust and flying insects are usually easily accumulated in the first air inlet 1511, so a shutter C82 with a dustproof module 821 is arranged here to prevent dust and insects.

[0063] See attached Figure 7 and attached Figure 5 As shown, a fixing plate 121 is also provided in the second cavity 12, and the fixing plate 121 is located on both sides of the high-pressure box 5 and the liquid cooling unit 4 along the X direction, and the high-pressure box 5 and the liquid cooling unit 4 are fixedly connected to the fixing plate 121 at the front side in the Y direction through connecting ears. When the high-pressure box 5 and the liquid cooling unit 4 are fixed to the fixing plate 121, the high-pressure box 5 and the liquid cooling unit 4 are directly in contact with the fixing plate 121 at the front side in the Y direction without a gap, ensuring that the air inlet B41 of the liquid cooling unit 4 will not absorb hot air from the air outlet B42 at the rear end of the liquid cooling unit 4 when working, avoiding the formation of an undesirable thermal cycle and realizing a one-way flow of gas.

[0064] The liquid cooling unit 4 may have more than one air outlet B42. The liquid cooling unit 4 may also have auxiliary air outlets on the two side edges and the upper shell of the top plate in the Y direction. The setting of the fixing plate 121 allows the liquid cooling unit 4 to exhaust only from the air outlet B42 near the second air outlet 1631.

[0065] In one embodiment, see the attached Figure 3 and attached Figure 7 As shown, a tray 43 is also provided in the second cavity 12, which is located directly below the liquid cooling unit. The tray 43 is located above the high-pressure box 5. The tray 43 is used to collect condensed water generated when the liquid cooling unit 4 is in working state. The lower guide plate B712 is arranged at an angle, and the high end of the lower guide plate B712 is fixed to the tray 43, and the low end is against the louver B81. At least one drain port 431 is provided on the side of the tray 43 close to the lower guide plate B712. The condensed water collected by the tray 43 flows into the lower guide plate B712 through the drain port 431, and is introduced into the louver B81 under the guidance of the lower guide plate B712, and is discharged outside the cabinet 1 through the drain port 431 provided in the louver B81. At this time, the lower guide plate B712 can be used as a guide for gas, and can also be used as a guide for condensed water.

[0066] Of course, in another embodiment, a separate water guide plate may be provided, which is inclined and abuts against the shutter B81 to guide the condensed water.

[0067] See attached Figure 7 As shown, the cabinet 1 includes a cabinet body 14, an opening and closing door and a rear cover. The cabinet body 14 includes four plates connected end to end, defining an installation cavity opened at both ends in the Y direction. The opening and closing door is hinged to the cabinet body 14 and can close one opening of the cabinet body 14. The rear cover is detachably connected to the cabinet body 14 and can close the other opening of the cabinet body 14.

[0068] The opening and closing door includes a first opening and closing door 151 corresponding to the first cavity 11 and a second opening and closing door 152 corresponding to the second cavity 12 and the third cavity 13. The first opening and closing door 151 and the second opening and closing door 152 can be opened respectively to repair the modules in the first cavity 11, the second cavity 12 and the third cavity. The first air inlet 1511 is provided below the first opening and closing door 151. Of course, in one embodiment, only one opening and closing door may be provided, but it is obviously more convenient to repair if two opening and closing doors are provided.

[0069] See attached Figure 6As shown, the rear cover is a split structure, including rear cover A161, rear cover B162, rear cover C163 and rear cover D164. The four rear covers can cover the opening of the cabinet body 14 after being spliced. Among them, the rear cover A161 corresponds to the second cavity 12, the rear cover B162 corresponds to the third cavity 13, the rear cover C163 corresponds to the position of the energy storage converter 2 in the first cavity 11, and the rear cover C163 corresponds to the position of the power distribution unit 3 in the first cavity 11. The first air outlet 1611 is provided on the rear cover A161, and the second air outlet 1631 is provided on the rear cover C163. At the same time, the rear cover D164 is provided with an array-distributed third air outlet 1641, but because the heat of the power distribution unit 3 is not high, only the third air outlet 1641 is provided for heat dissipation to meet the heat dissipation requirements. A shutter D is also provided at the third air outlet 1641 . The shutter D has the same structure as the shutter B81 . An insect-proof module 811 is detachably connected to the shutter D.

[0070] In one embodiment, a support frame corresponding to the battery pack 6 is fixed in the third cavity 13, and the battery pack 6 is fixed on the corresponding support frame. Figure 5 As shown, the liquid cooling unit 4 includes a water inlet main pipe 44 and a water outlet main pipe 45, and each battery pack 6 also includes a water inlet branch pipe 61 connected to the water inlet main pipe 44 and a water outlet branch pipe 62 connected to the water outlet main pipe 45. The cooling medium in the liquid cooling unit 4 flows out through the water outlet main pipe 45, and flows into the corresponding battery pack 6 through the water outlet branch pipe 62. After the cooling medium cools the battery pack 6, it flows into the water inlet main pipe 44 from the water inlet branch pipe 61, and flows back to the liquid cooling unit 4 through the water inlet main pipe to cool down.

[0071] In one embodiment, each water inlet branch pipe 61 and water outlet branch pipe 62 is provided with a stop valve 63 for controlling the on-off thereof. When the corresponding battery pack 6 and branch pipe need to be replaced, the corresponding stop valve 63 can be closed to reduce the large outflow of cooling medium and thus the potential safety hazard.

[0072] In one embodiment, the third cavity 13 is further provided with thermal insulation cotton located outside the battery assembly, and the thermal insulation cotton is used to achieve thermal insulation between the third cavity 13 and the external environment.

[0073] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An energy storage cabinet, characterized in that: include: A cabinet body, wherein the cabinet body defines a mounting cavity; An energy storage converter, wherein the energy storage converter is arranged in the installation cavity; A liquid cooling unit, wherein the liquid cooling unit is arranged in the installation cavity, the liquid cooling unit and the energy storage converter both include an air inlet and an air outlet, the air inlets of the liquid cooling unit and the energy storage converter both face the same side of the third direction, a first air inlet is provided on a side of the cabinet body close to the air inlet, and air outlets corresponding to the air outlets of the energy storage converter and the liquid cooling unit are respectively provided on a side of the cabinet body away from the air inlet; A guide component is arranged corresponding to the energy storage inverter and the liquid cooling unit, each of the guide components forms a guide channel, and the guide channel is used to guide the gas from the air outlet toward the corresponding air outlet hole, and the gas blown out of the air outlet can only flow out from the air outlet hole along the corresponding guide channel.

2. The energy storage cabinet according to claim 1, characterized in that: Each of the guide components includes an upper guide plate, a lower guide plate, a left guide plate and a right guide plate, and the upper guide plate, the lower guide plate, the left guide plate and the right guide plate define a guide channel extending along a third direction, and the air outlet is embedded in the guide channel, and the upper guide plate, the lower guide plate, the left guide plate and the right guide plate all extend along the third direction and directly guide the gas from the air outlet to the corresponding air outlet.

3. The energy storage cabinet according to claim 1, characterized in that: A fixing plate is also provided in the installation cavity, and the fixing plates are located on both sides of the liquid cooling unit along the first direction, and the liquid cooling unit is fixedly connected to the fixing plate via a connecting ear on one side close to the first air inlet in the third direction; When the liquid cooling unit is fixed to the fixing plate, the liquid cooling unit is in direct contact with the fixing plate at a side close to the first air inlet in the third direction.

4. The energy storage cabinet according to claim 2, characterized in that: Shutters are respectively arranged at the air outlets corresponding to the air outlets of the energy storage converter and the liquid cooling unit, and the upper guide plate, the lower guide plate, the left guide plate and the right guide plate are against the corresponding shutters.

5. The energy storage cabinet according to claim 2, characterized in that: A tray is also provided in the installation cavity and is located directly below the liquid cooling unit. The tray is used to collect condensed water generated by the liquid cooling unit.

6. The energy storage cabinet according to claim 5, characterized in that: The lower guide plate of the guide assembly corresponding to the liquid cooling unit is arranged obliquely, the high end of the lower guide plate is fixed to the tray, and a drainage port is arranged on one side of the tray close to the lower guide plate.

7. The energy storage cabinet according to any one of claims 1 to 6, characterized in that: The installation cavity is divided into a first cavity, a second cavity and a third cavity by a partition, the second cavity and the third cavity are distributed along the second direction, and the second cavity is located above the third cavity, and the first cavity is arranged on the same side of the second cavity and the third cavity in the first direction; The energy storage converter is located in the first cavity; The liquid cooling unit is located in the second cavity, a conducting hole for connecting the second cavity and the first cavity is provided on the partition between the second cavity and the first cavity, and a high-pressure box located below the liquid cooling unit is also provided in the second cavity; The third cavity is provided with a plurality of battery packs along the second direction, and the liquid cooling unit can provide cooling medium for each battery pack.

8. The energy storage cabinet according to claim 7, characterized in that: The liquid cooling unit further includes a water inlet main pipe and a water outlet main pipe, and each of the battery packs further includes a water inlet branch pipe connected to the water inlet main pipe and a water outlet branch pipe connected to the water outlet main pipe; Each of the water inlet branch pipe and the water outlet branch pipe is provided with a stop valve.

9. The energy storage cabinet according to claim 7, characterized in that: A power distribution unit located below the energy storage converter is also provided in the first cavity, and the first air inlet is provided at a position corresponding to the cabinet and the power distribution unit.

10. The energy storage cabinet according to claim 1, characterized in that: The cabinet comprises: A cabinet body, wherein the cabinet body defines a mounting cavity with openings at both ends along a third direction; An opening and closing door, the opening and closing door is hinged to the cabinet body and can close an opening of the cabinet body, and the first air inlet hole is provided on the opening and closing door; A rear cover plate is detachably connected to the cabinet body, and the rear cover plate can close another opening of the cabinet body. The air outlet is provided on the rear cover plate.

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