Energy storage subrack structure and lithium ion battery energy storage system

Abstract

The utility model discloses an energy storage subrack structure and a lithium ion battery energy storage system. The energy storage subrack structure comprises an upper cover, a lower tray, a vulnerable part cover plate, an aviation plug cover plate, a water inlet and a water outlet, an upper cover with a bottom opening is fixedly arranged at the top of the hollow lower tray; the front end of the upper cover is provided with an aviation plug cover plate mounting notch and a quick-wear part cover plate mounting notch; an aviation plug cover plate and a quick-wear part cover plate are respectively mounted on the aviation plug cover plate mounting notch and the quick-wear part cover plate mounting notch; a water inlet and a water outlet are respectively formed in the left and right ends of the front side of the lower tray; a plurality of lifting lugs are respectively arranged on the left side and the right side of the lower tray; the lithium ion battery heating and cooling device is scientific in structural design, can timely and reliably heat and cool the lithium ion battery, effectively guarantees the working performance of the lithium ion battery, prolongs the service life of the lithium ion battery, and has great practical significance.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, in particular to an energy storage plug-in box structure and a lithium-ion battery energy storage system. Background Art

[0002] Lithium-ion batteries have the advantages of high specific energy, many cycles and long storage time. They are not only widely used in portable electronic devices (such as mobile phones, digital cameras and laptops), but also widely used in large and medium-sized electric equipment such as electric vehicles, electric bicycles and power tools. Therefore, the performance requirements for lithium-ion batteries are getting higher and higher.

[0003] Currently, the demand for integrated energy storage cabinets and energy storage containers is increasing. To ensure the long-term operation of lithium-ion battery energy storage systems, the lithium-ion battery packs need to be heated in low-temperature environments and cooled in high-temperature environments to ensure that the lithium-ion batteries operate within the optimal operating temperature range, safeguard their performance, and extend their service life.

[0004] However, the existing energy storage box structure for installing lithium-ion batteries is unscientifically designed and cannot timely and reliably heat or cool the lithium-ion batteries, cannot effectively guarantee the working performance of the lithium-ion batteries, and the service life of the lithium-ion batteries is short. Utility Model Content

[0005] The purpose of the utility model is to provide an energy storage box structure and a lithium-ion battery energy storage system in response to the technical defects of the existing technology.

[0006] To this end, the utility model provides an energy storage plug-in box structure, which includes an upper cover, a lower tray, a wearing parts cover, an aviation plug cover, a water inlet and a water outlet;

[0007] An upper cover with a bottom opening is fixedly provided on the top of the hollow lower tray;

[0008] The front end of the upper cover is provided with an installation notch for the aviation plug cover and an installation notch for the wearing parts cover;

[0009] The aviation plug cover plate installation notch and the consumables cover plate installation notch are respectively installed with the aviation plug cover plate and the consumables cover plate;

[0010] The left and right ends of the front side of the lower tray are respectively provided with a water inlet and a water outlet;

[0011] There are multiple lifting ears on the left and right sides of the lower tray;

[0012] Lower tray, including: right beam bottom plate, middle bottom plate, left beam bottom plate, module mounting beam, front crossbeam, front baffle and rear crossbeam;

[0013] The two middle bottom plates are parallel to each other and sealed to form a middle bottom assembly;

[0014] The left beam bottom plate and the right beam bottom plate are located on the left and right sides of the middle bottom assembly and are fixedly connected;

[0015] The left beam bottom plate, the right beam bottom plate and the middle bottom are combined to form the main body of the lower tray;

[0016] The front and rear ends of the lower tray body are respectively provided with a transversely distributed front beam and a rear beam;

[0017] A transversely distributed module mounting beam is provided at the front and rear ends of the top of the lower tray body;

[0018] A transversely distributed front baffle is provided on the front side of the front crossbeam.

[0019] In addition, the present invention also provides a lithium-ion battery energy storage system, which includes the energy storage box structure as described above;

[0020] A plurality of lithium-ion batteries are arranged in the energy storage box structure.

[0021] It can be seen from the technical solution provided by the above utility model that, compared with the existing technology, the utility model provides an energy storage plug-in box structure and a lithium-ion battery energy storage system, which has a scientific structural design and can timely and reliably heat or cool the lithium-ion battery, effectively ensuring the working performance of the lithium-ion battery and extending the service life of the lithium-ion battery, and has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional assembly diagram of an energy storage plug-in box structure provided by the utility model;

[0023] Figure 2 A schematic diagram of a three-dimensional exploded structure of an energy storage plug-in box structure provided by the utility model;

[0024] Figure 3 This is a schematic diagram of a three-dimensional exploded structure of a lower tray in an energy storage plug-in box structure provided by the utility model;

[0025] Figure 4 A perspective view of the three-dimensional structure of the right beam bottom plate included in the lower tray of an energy storage plug-in box structure provided by the present invention;

[0026] Figure 5 A perspective view of the three-dimensional structure of the right beam bottom plate and the connected middle bottom plate included in the energy storage plug-in box structure provided by the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0031] See also Figures 1 to 5 The utility model provides an energy storage plug-in box structure, including an upper cover 1, a lower tray 2, a wearing parts cover 3, an aviation plug-in cover 4, a water inlet 5 and a water outlet 6;

[0032] An upper cover 1 with a bottom opening is fixedly provided on the top of the hollow lower tray 2;

[0033] The front end of the upper cover 1 is provided with an installation notch 400 for the aviation plug cover and an installation notch 300 for the wearing parts cover;

[0034] The aviation plug cover plate installation notch 400 and the consumable part cover plate installation notch 300 are respectively installed with the aviation plug cover plate 4 and the consumable part cover plate 3;

[0035] The left and right ends of the front side of the lower tray 2 are respectively provided with a water inlet 5 and a water outlet 6;

[0036] A plurality of lifting ears 7 are respectively provided on the left and right sides of the lower tray 2 .

[0037] In this utility model, see Figure 3 As shown, the lower tray 2 includes: a right beam bottom plate 9, a middle bottom plate 12, a left beam bottom plate 13, a module mounting beam 14, a front crossbeam 15, a front baffle 16 and a rear crossbeam 18;

[0038] The two middle bottom plates 12 are parallel to each other and sealed to form a middle bottom assembly;

[0039] The left beam bottom plate 13 and the right beam bottom plate 9 are located on the left and right sides of the middle bottom combination and are fixedly connected;

[0040] The left beam bottom plate 13, the right beam bottom plate 9 and the middle bottom are combined together to form the lower tray body;

[0041] The front and rear ends of the lower tray body are respectively provided with a front crossbeam 15 and a rear crossbeam 18 which are distributed laterally;

[0042] A transversely distributed module mounting beam 14 is provided at the front and rear ends of the top of the lower tray body;

[0043] A transversely distributed front baffle 16 is provided on the front side of the front crossbeam 15;

[0044] In this utility model, the specific implementation is as follows Figure 4 As shown, the right beam bottom plate 9 includes: two curved and hollow right beam bottom plate cavity flow channels 902;

[0045] The two right beam bottom plate cavity flow channels 902 are separated (i.e., phase-separated) by the longitudinally distributed first right fins 9011;

[0046] The two right beam bottom plate cavity flow channels 902 are arranged parallel to each other;

[0047] In a specific implementation, the front end tops of the two right beam bottom plate cavity flow channels 902 are respectively provided with a first right waist circular hole 903 and a second right waist circular hole 904;

[0048] The two first right side waist circular holes 903 are located at opposite ends of the two right side beam bottom plate cavity flow channels 902;

[0049] The two second right side waist circular holes 904 are located at opposite ends of the two right side beam bottom plate cavity flow channels 902;

[0050] For each right beam bottom plate cavity flow channel 902, a longitudinally distributed second right fin 9012 is provided therein;

[0051] The longitudinal length of the second right fin 9012 is less than the longitudinal length of the cavity flow channel 902 in the right beam bottom plate;

[0052] The second right fin 9012 is used to divide the cavity flow channel 902 in the right beam bottom plate into two interconnected sub-flow channels;

[0053] Each cavity flow channel 902 in the right beam bottom plate has a first right kidney-shaped hole 903 and a second right kidney-shaped hole 904, which are respectively located on both sides of the second right fin 9012.

[0054] Furthermore, the shape of the cavity flow channel 902 in the right beam bottom plate is U-shaped or "凵"-shaped.

[0055] In specific implementation, front flow channel plugging plates 10 and rear flow channel plugging plates 11 are hermetically arranged at the front and rear openings of the cavity flow channel 902 in the right beam bottom plate respectively;

[0056] In specific implementation, the right beam bottom plate 9 is an aluminum profile, and the material is 6-series aluminum;

[0057] In specific implementation, as Figure 4 shown, the first right kidney-shaped hole 903 and the second right kidney-shaped hole 904 are not on the same straight line and are offset front and back.

[0058] In specific implementation, the front flow channel plugging plate 10 is placed into the front opening of the cavity flow channel 902 in the right beam bottom plate and is fixed by full welding;

[0059] The rear flow channel plugging plate 11 is placed into the rear opening of the cavity flow channel 902 in the right beam bottom plate and is fixed by full welding;

[0060] It should be noted that for the right beam bottom plate 9, the coolant can enter two adjacent sub-flow channels of the two cavity flow channels 902 in the right beam bottom plate through the two second right kidney-shaped holes 904 in the middle. Then, the flow direction is changed by the second right fin 9012 in the cavity flow channel 902, and it enters the sub-flow channels on the other side of the two cavity flow channels 902, and then flows out from the first right kidney-shaped holes 903 on both sides.

[0061] In specific implementation, the sum of the transverse widths of the two cavity flow channels 902 in the right beam bottom plate is the same as the transverse width of a square battery cell.

[0062] It should be noted that for the present invention, the two cavity flow channels 902 in the right beam bottom plate correspond to the width of a square battery cell. At this time, each battery cell can be cooled simultaneously from the middle to achieve the functions of controlling the temperature and reducing the temperature difference. The left beam bottom plate 13 and the right beam bottom plate 9 are symmetrically distributed left and right.

[0063] In terms of specific implementation, the left beam bottom plate 13 and the right beam bottom plate 9 are symmetrically distributed structures on the left and right;

[0064] It should be noted that the left beam bottom plate 13 and the right beam bottom plate 9 can share a set of profile molds;

[0065] In the present utility model, in terms of specific implementation, the middle bottom plate 12 is made of aluminum profile, and the material is 6-series aluminum;

[0066] In the present utility model, in terms of specific implementation, refer to Figure 5 As shown, each middle bottom plate 12 includes: two middle bottom plate cavity flow channels 1204 that are bent and distributed and hollow;

[0067] The two middle bottom plate cavity flow channels 1204 are separated (i.e., partitioned) by the longitudinally distributed first middle fin 12011;

[0068] The two middle bottom plate cavity flow channels 1204 are arranged parallel to each other;

[0069] In terms of specific implementation, at the front tops of the two middle bottom plate cavity flow channels 1204, a first middle waist-shaped hole 1203 and a second middle waist-shaped hole 1202 are respectively provided;

[0070] The two first middle waist-shaped holes 1203 are located at one opposite end of the two middle bottom plate cavity flow channels 1204;

[0071] The two second middle waist-shaped holes 1202 are located at one opposite end of the two middle bottom plate cavity flow channels 1204;

[0072] [[ID=二十九]]For each middle bottom plate cavity flow channel 1204, a longitudinally distributed second middle fin 12012 is provided therein;

[0073] The longitudinal length of the second middle fin 12012 is less than the longitudinal length of the middle bottom plate cavity flow channel 1204;

[0074] The second middle fin 12012 is used to divide the middle bottom plate cavity flow channel 1204 into two interconnected sub-flow channels;

[0075] The first middle waist-shaped hole 1203 and the second middle waist-shaped hole 1202 of each middle bottom plate cavity flow channel 1204 are respectively located on both sides of the second middle fin 12012.

[0076] Furthermore, the shape of the middle bottom plate cavity flow channel 1204 is U-shaped or "凵"-shaped.

[0077] In terms of specific implementation, the front and rear openings of the middle bottom plate cavity flow channel 1204 are respectively and hermetically provided with a front flow channel plugging plate 10 and a rear flow channel plugging plate 11; ​It should be noted that the rear flow channel blocking plate 11 can be placed into the rear end opening of the middle bottom plate cavity flow channel 1204;

[0079] In a specific implementation, the first middle waist round hole 1203 and the second middle waist round hole 1202 are not on a straight line and are misaligned front to back.

[0080] In a specific implementation, the second middle waist circular hole 1202 and the first right waist circular hole 903 on the right beam bottom plate 9 are in a straight line;

[0081] The first middle waist circular hole 1203 and the second right waist circular hole 904 on the right beam bottom plate 9 are in a straight line.

[0082] It should be noted that the front flow channel blocking plate 10 is placed into the front end opening of the middle bottom plate cavity flow channel 1204 and is fully welded and fixed;

[0083] The rear flow channel blocking plate 11 is placed into the rear end opening of the middle bottom plate cavity flow channel 1204 and is fully welded and fixed.

[0084] It should be noted that, for the middle base plate 12, the coolant can enter the two adjacent sub-channels of the two middle base plate cavity flow channels 1204 through the two first middle waist-circular holes 1203 in the middle, and then change the flow direction through the second middle fin 12012 in the middle base plate cavity flow channel 1204, enter the sub-channel on the other side of the two middle base plate cavity flow channels 1204, and then flow out from the second middle waist-circular holes 1202 on both sides.

[0085] In a specific implementation, the sum of the lateral widths of the two middle bottom plate cavity flow channels 1204 is the same as the lateral width of a square battery cell.

[0086] It should be noted that, for the present invention, the two middle bottom plate cavity flow channels 1204 correspond to the width of a square battery cell. At this time, each battery cell can be cooled from the middle at the same time to achieve the function of controlling the temperature and reducing the temperature difference.

[0087] In the present invention, in a specific implementation, the left beam bottom plate 13, the middle bottom plate 12, and the right beam bottom plate 9 are placed in sequence, and the adjacent ends are connected by stir friction welding.

[0088] In the present invention, in a specific implementation, the flat plate portion of the left beam bottom plate 13, the middle bottom plate 12 and the flat plate portion of the right beam bottom plate 9 are located on the same horizontal plane, and their tops are used to place battery cells.

[0089] In the present invention, in a specific implementation, the front crossbeam 15 is an aluminum profile, and the material is 6 series aluminum;

[0090] In the present invention, in a specific implementation, a front crossbeam circular hole 1501 is provided at the lower right end of the front crossbeam 15 and is longitudinally penetrated.

[0091] A front crossbeam cavity (specifically a C-shaped cavity) 1502 with an open bottom is provided on the inner side of the lower end of the front crossbeam 15;

[0092] In a specific implementation, a side blocking piece 17 is respectively sealed on the left and right sides of the front cross beam cavity (specifically the C-shaped cavity) 1502.

[0093] In a specific implementation, the rear cross beam 18 and the front cross beam 15 can share a set of profile molds; except that the rear cross beam 18 is not provided with the two front cross beam circular holes 1501, the other structures are the same as those of the front cross beam 15.

[0094] In specific implementation, the left and right ends of the front baffle 16 are respectively provided with a front baffle water inlet hole 1601 and a front baffle water outlet hole 1602;

[0095] The circular water outlet hole 1602 of the front baffle is arranged correspondingly to the circular hole 1501 of the front crossbeam;

[0096] In specific implementation, such as Figure 3 As shown, the front cross beam 15 and the rear cross beam 18 are fixed to the top of the left beam bottom plate 13 and the right beam bottom plate 9 by welding.

[0097] In a specific implementation, the front crossbeam cavity (specifically a C-shaped cavity) 1502 of the front crossbeam 15 is arranged correspondingly to the two first right waist-round holes 903 on the right beam bottom plate 9 and the two second middle waist-round holes 1202 on the middle bottom plate 12;

[0098] The bottom surface of the front cross beam 15 is sealed with the bottom surface of the right beam bottom plate 9 and the middle bottom plate 12;

[0099] The first right waist circular hole 903 and the second middle waist circular hole 1202 are located inside the front crossbeam cavity (specifically, the C-shaped cavity) 1502;

[0100] The water outlet 6 passes through the front baffle water outlet circular hole 1602 on the front baffle 16 and the front beam circular hole 1501 on the front beam 15 from front to back, and its rear opening is connected to the front beam cavity (specifically the C-shaped cavity) 1502 of the front beam 15.

[0101] Therefore, the coolant flowing out from the first right waist circular hole 903 and the second middle waist circular hole 1202 can enter the front beam cavity of the front beam 15 and then flow out through the water outlet 6.

[0102] In specific implementation, the vertically distributed front baffle 16 is connected to the front side edge of the bottom surface of the upper end of the front cross beam 15 (welded and fixed);

[0103] The longitudinal width of the lower end of the front cross member 15 is smaller than the longitudinal width of the upper end thereof;

[0104] A liquid inlet cavity is formed between the rear side surface of the front baffle 16 and the front side surface of the lower end of the front crossbeam 15;

[0105] The liquid inlet cavity is arranged correspondingly to the two second right waist-circular holes 904 on the right beam bottom plate 9 and the two first middle waist-circular holes 1203 on the middle bottom plate 12;

[0106] The bottom surface of the front baffle 16 and the bottom surface of the front crossbeam 15 are both sealed to the bottom surfaces of the right beam bottom plate 9 and the middle bottom plate 12;

[0107] The second right waist circular hole 904 and the first middle waist circular hole 1203 are located inside the liquid inlet cavity;

[0108] The water inlet 5 passes through the front baffle water inlet circular hole 1601 on the front baffle 16 from front to back, and its rear opening is communicated with the liquid inlet cavity on the rear side of the front baffle 16 .

[0109] Therefore, the external coolant can flow in from the water inlet 5, and then be introduced into the liquid inlet cavity, and then flow into the second right waist circular hole 904 and the first middle waist circular hole 1203 through the liquid inlet cavity, and then flow into the right beam bottom plate cavity flow channel 902 inside the right beam bottom plate 9 and the middle bottom plate cavity flow channel 1204 inside the middle bottom plate 12, which is beneficial to cooling or heating the battery cells placed on the top of the right beam bottom plate 9 and the middle bottom plate 12.

[0110] It should be noted that the left and right sides of the liquid inlet cavity are sealed by side blocking pieces 17. Specifically, the side blocking pieces 17 are placed at the two side openings of the liquid inlet cavity and fixed by welding.

[0111] It should be noted that the water inlet 5 matches the front baffle water inlet circular hole 1601 on the front baffle 16 and is fixed by welding. The water outlet 6 passes through the front baffle water outlet circular hole 1602 on the front baffle 16 and matches the front crossbeam circular hole 1501 on the front crossbeam 15 and is fixed by welding. Since the water inlet 5 and the water outlet 6 are hollow inside, the external cooling liquid can enter the cavity formed by the front crossbeam 15 and the front baffle 16 (i.e., the liquid inlet cavity) through the water inlet 5, and pass through the second right waist circular hole 904 of the right beam bottom plate 9 and the first middle waist circular hole 1203 of the middle bottom plate 12, and enter the right beam bottom plate cavity flow channel 902 inside the right beam bottom plate 9 and the middle bottom plate cavity flow channel 1204 inside the middle bottom plate 12;

[0112] Then, press Figure 4 and Figure 5As shown, the coolant flows out from the first right waist circular hole 903 of the right beam bottom plate 9 and the second middle waist circular hole 1202 of the middle bottom plate 12, flows into the front cross beam cavity (specifically the C-shaped cavity, i.e., serving as the liquid outlet cavity) 1502 of the front cross beam 15, and finally flows out from the water outlet 6 connected to the front cross beam cavity 1502, thereby taking away the heat generated by the battery cell during the charging and discharging process.

[0113] It's important to note that in a liquid cooling system, fluid always flows from the inlet to the outlet. Because heat is exchanged during the flow, the longer the fluid flows, the greater the temperature difference between the beginning and end, and the greater the flow resistance. The smaller the temperature difference, the greater the improvement in the lifespan of the entire battery system. Controlling the flow resistance also improves heat exchange efficiency.

[0114] According to actual needs, a water inlet is added within the same area, and the two flow channels simultaneously perform heat exchange, that is, the fluid enters the two flow channels simultaneously, which can effectively reduce the flow length of the fluid and achieve the purpose of controlling the flow resistance, thereby achieving the purpose of controlling the temperature difference. In view of this, the present invention specifically requires that the fluid enters the flow channel simultaneously, specifically: after the coolant flows into the cavity formed by the front crossbeam 15 and the front baffle 16 through the water inlet 5 (i.e., the liquid inlet cavity), it is simultaneously connected to the two flow channels connected by the second right waist circular hole 904 of the right beam bottom plate 9 and the first middle waist circular hole 1203 of the middle bottom plate 12, which is conducive to allowing the two flow channels to perform heat exchange simultaneously, effectively reducing the flow length of the fluid and achieving the purpose of controlling the flow resistance.

[0115] Similarly, the present invention also specifically requires that the fluid should flow out of two flow channels simultaneously, specifically: the coolant flows out of the two flow channels connected by the first right waist circular hole 903 of the right beam bottom plate 9 and the second middle waist circular hole 1202 of the middle bottom plate 12 at the same time, flows out into the front crossbeam cavity (specifically, the C-shaped cavity, i.e., the liquid outlet cavity) 1502 of the front crossbeam 15, and finally flows out from the water outlet 6 connected to the front crossbeam cavity 1502. This design is conducive to allowing the two flow channels to perform heat exchange simultaneously, effectively reducing the flow length of the fluid and achieving the purpose of controlling flow resistance. In addition, by allowing the fluid (i.e., the coolant) to flow out of the two flow channels simultaneously, the present invention is also conducive to avoiding the formation of backflow, which leads to inconsistent local fluid flow rates and thus affects the heat exchange efficiency of the entire system.

[0116] It should also be noted that currently, the conventional method for parallel connection of multiple water inlets and outlets is through water pipes and quick-connect connectors. This method uses more materials and has more failure points. To reduce the number of parts, lower system weight and development costs, the present invention uses aluminum profiles to achieve the above goals.

[0117] In the present invention, in a specific implementation, the water inlet 5 is a water inlet pipe with a hollow interior;

[0118] The water outlet 6 is a hollow water outlet pipe.

[0119] Specifically, the distance between the water inlet 5 and the water outlet 6 on the lower tray 2 can be adjusted arbitrarily according to requirements;

[0120] Specifically, the water inlet 5 and the water outlet 6 are respectively connected to existing external liquid cooling devices through hollow connecting pipes. For example: the water inlet 5 and the water outlet 6 are respectively connected to the liquid outlet and liquid inlet of an external cooling pump (such as a water pump) through hollow connecting pipes, and the connecting pipes are pre-injected with coolant.

[0121] It should be noted that the coolant is a flame-retardant coolant or water. Among them, the function of the external cooling pump (such as a water pump) is to provide circulating power for the coolant in the liquid inlet cavity, the front crossbeam cavity (specifically the C-shaped cavity) 15xx, and the connecting pipes, so as to ensure that the coolant can flow in the liquid cooling pipe and related connecting pipes, and the flow rate of the coolant can be controlled. Specifically, radiators and heaters can be installed on the connecting pipes between the water inlet 5 and the water outlet 6 and the external cooling pump (such as a water pump), so as to facilitate heat dissipation of the coolant in summer and heating of the coolant in winter. Therefore, through the action of the coolant, the battery cells placed on the top of the lower tray 2 can be heated or cooled.

[0122] In the present utility model, specifically, the front baffle 16 is an aluminum plate, and the material is 6-series aluminum;

[0123] In the present utility model, specifically, the material of the module mounting beam 14 is 6-series aluminum;

[0124] In the present utility model, specifically, the module mounting beam 14 contains module fixing holes 1401;

[0125] In the present utility model, specifically, the lifting lugs 7 are welded on the left and right sides of the lower tray 2;

[0126] The rollers 8 are installed on the left and right sides of the lower tray 2;

[0127] In the present utility model, specifically, the shape of the lifting lug 7 is a "Ji" shape;

[0128] In the present utility model, specifically, on the lifting lug 7, a roller 8 is pivotally connected (i.e., rotatably connected);

[0129] It should be noted that the roller 8 is a standard bearing and can be installed on the lower tray 2 through the lifting lug 7;

[0130] Specifically, the bottom surface of the roller 8 protrudes downward from the bottom surface of the lower tray 2, which is convenient for pushing when the box is put into the cabinet.

[0131] In the present invention, in a specific implementation, the upper cover 1 is made of sheet metal and can be freely changed in length according to the requirements of the battery pack;

[0132] In the present invention, in a specific implementation, a front panel 104 is provided at the front end of the upper cover 1;

[0133] The front panel 104 is provided with an installation notch 400 for the aviation plug cover and an installation notch 300 for the consumable part cover;

[0134] In specific implementation, a plurality of front panel circular holes 101 are distributed on the front panel 104;

[0135] In the present invention, in a specific implementation, the bottom edge of the upper cover 1 is surrounded by an upper cover flange surface 103;

[0136] A plurality of upper cover flange surface circular holes 102 are distributed on the upper cover flange surface 103;

[0137] In the present invention, the top edges of the upper and lower trays 2 (specifically, the top surfaces of the front crossbeam 15, the rear crossbeam 18, the left beam bottom plate 13, and the right beam bottom plate 9) are surrounded by a lower tray flange surface 201.

[0138] The upper cover flange surface 103 is located directly above the lower tray flange surface 201;

[0139] The upper cover flange surface 103 and the lower tray flange surface 201 are fixedly connected by a plurality of screws;

[0140] Furthermore, the lower tray flange surface 201 is provided with a plurality of lower tray mounting holes 202 at positions corresponding to the plurality of upper cover flange surface circular holes 102;

[0141] The screw passes through the upper cover flange surface circular hole 102 on the upper cover flange surface 103 from top to bottom, and is screwed and fixedly connected with the lower tray mounting hole 202 (which is an internal threaded hole) at the corresponding position.

[0142] In a specific implementation, a C-shaped groove 203 is formed between the bottom surface of the lower tray flange surface 201 and the bottom of the lower tray 2;

[0143] It should be noted that the lower tray flange surface 201 on the lower tray 2 corresponds to the upper cover flange surface 103 on the upper cover 1, and the lower tray mounting holes 202 of the lower tray 2 correspond one-to-one with the circular holes 102 on the upper cover flange surface of the upper cover 1. The C-shaped grooves 203 of the lower tray 2 can be used to match the limiting structure located in the external cabinet to limit or secure the subrack.

[0144] In the present invention, in specific implementation, the consumable cover plate 3 is made of sheet metal and its size can be adjusted according to needs;

[0145] In the present invention, in a specific implementation, the aviation plug cover 4 is made of sheet metal and its size can be adjusted according to needs;

[0146] In the present invention, in a specific implementation, the consumable cover plate circular holes 301 are evenly distributed around the consumable cover plate 3;

[0147] The center of the wearing parts cover 3 has a parts installation area 302;

[0148] There are circular holes 401 evenly distributed around the aviation plug cover 4;

[0149] The center of the aviation plug cover 4 has an aviation plug installation area 402;

[0150] The circular holes 401 on the aviation plug cover plate 4 and the circular holes 301 on the consumable part cover plate 3 are respectively arranged corresponding to the front panel circular holes 101 distributed on the front panel 104 of the upper cover 1;

[0151] The aviation plug cover 4 is fixedly connected to the front panel 104 of the upper cover 1 by a first screw;

[0152] After the first screw passes through the circular hole 401 on the aviation plug cover 4, it is screwed and fixed with the corresponding circular hole 101 on the front panel;

[0153] The consumable parts cover 3 is fixedly connected to the front panel 104 of the upper cover 1 by a second screw;

[0154] After the second screw passes through the consumable cover plate circular hole 301 on the consumable cover plate 3, it is threadedly fixedly connected with the corresponding circular hole 101 on the front panel.

[0155] It should be noted that the circular holes 401 on the aviation plug cover 4 and the circular holes 301 on the consumable part cover 3 are respectively arranged in a one-to-one correspondence with the front panel circular holes 101 distributed on the front panel 104 of the upper cover 1.

[0156] Based on the above Figures 1 to 5 The energy storage plug-in box structure provided by the utility model shown in the figure, the utility model also provides a lithium-ion battery energy storage system, including the energy storage plug-in box structure as described above;

[0157] A plurality of lithium-ion batteries are arranged in the energy storage box structure.

[0158] In a specific implementation, the flat plate portion of the left beam bottom plate 13, the middle bottom plate 12 and the flat plate portion of the right beam bottom plate 9 are located on the same horizontal plane, and their tops are used to place battery cells.

[0159] In summary, the present invention is a novel energy storage plug-in box that can achieve both liquid cooling and liquid heating functions. The length of the plug-in box can be adjusted according to the number of cells to be assembled, and the internal flow channel design enables uniform heat dissipation and heating of the cells.

[0160] Compared with existing integrated cabinets or containers, the energy storage plug-in box of the present invention has better size compatibility with battery cells and better performance.

[0161] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An energy storage box structure, characterized in that: It includes an upper cover (1), a lower tray (2), a vulnerable part cover plate (3), a connector cover plate (4), a water inlet (5) and a water outlet (6); At the top of the hollow lower tray (2), an upper cover (1) with an open bottom is fixedly arranged; At the front end of the upper cover (1), there are provided a connector cover plate installation notch (400) and a vulnerable part cover plate installation notch (300); On the connector cover plate installation notch (400) and the vulnerable part cover plate installation notch (300), a connector cover plate (4) and a vulnerable part cover plate (3) are respectively installed; At the front side of the left and right ends of the lower tray (2), a water inlet (5) and a water outlet (6) are respectively provided; On the left and right sides of the lower tray (2), a plurality of lifting lugs (7) are respectively provided; The lower tray (2) includes: a right beam bottom plate (9), a middle bottom plate (12), a left beam bottom plate (13), a module installation beam (14), a front cross beam (15), a front baffle (16) and a rear cross beam (18); Two middle bottom plates (12) are parallel to each other and are hermetically connected to form a middle bottom combination; The left beam bottom plate (13) and the right beam bottom plate (9) are located on the left and right sides of the middle bottom combination and are fixedly connected; The left beam bottom plate (13), the right beam bottom plate (9) and the middle bottom combination together form the lower tray main body; At the front and rear ends of the lower tray main body, a horizontally distributed front cross beam (15) and a rear cross beam (18) are respectively provided; At the front and rear ends of the top of the lower tray main body, a horizontally distributed module installation beam (14) is respectively provided; On the front side of the front cross beam (15), a horizontally distributed front baffle (16) is provided.

2. The energy storage box structure according to claim 1, characterized in that: The right beam bottom plate (9) includes: two right beam bottom plate cavity flow channels (902) that are bent and distributed and are hollow; The two right beam bottom plate cavity flow channels (902) are separated by a longitudinally distributed first right fin (9011); The two right beam bottom plate cavity flow channels (902) are arranged parallel to each other; The left beam bottom plate (13) and the right beam bottom plate (9) are structures that are symmetrically distributed left and right.

3. The energy storage box structure according to claim 2, characterized in that: At the front top ends of the two right beam bottom plate cavity flow channels (902), a first right waist-shaped round hole (903) and a second right waist-shaped round hole (904) are respectively provided; The two first right waist-shaped round holes (903) are located at the opposite ends of the two right beam bottom plate cavity flow channels (902); The two second right waist-shaped round holes (904) are located at the opposite ends of the two right beam bottom plate cavity flow channels (902); For each right beam bottom plate cavity flow channel (902), a longitudinally distributed second right fin (9012) is arranged therein; The longitudinal length of the second right fin (9012) is less than the longitudinal length of the right beam bottom plate cavity flow channel (902); The second right fin (9012) is used to divide the right beam bottom plate cavity flow channel (902) into two connected sub-flow channels; The first right waist-shaped round hole (903) and the second right waist-shaped round hole (904) of each right beam bottom plate cavity flow channel (902) are respectively located on both sides of the second right fin (9012).

4. The energy storage box structure according to claim 2, characterized in that: The shape of the right beam bottom plate cavity flow channel (902) is U-shaped or "凵"-shaped; The front and rear ends of the cavity flow channel (902) of the right beam bottom plate are respectively and hermetically provided with a front flow channel plugging plate (10) and a rear flow channel plugging plate (11); The first right waist-round hole (903) and the second right waist-round hole (904) are not on the same straight line and are offset front and back.

5. The energy storage box structure according to claim 1, characterized in that: Each middle bottom plate (12) includes: two middle bottom plate cavity flow channels (1204) that are bent and distributed and hollow; The two middle bottom plate cavity flow channels (1204) are separated by a longitudinally distributed first middle fin (12011); The two middle bottom plate cavity flow channels (1204) are arranged in parallel with each other; At the front tops of the two middle bottom plate cavity flow channels (1204), a first middle waist-round hole (1203) and a second middle waist-round hole (1202) are respectively provided; The two first middle waist-round holes (1203) are located at the opposite ends of the two middle bottom plate cavity flow channels (1204); The two second middle waist-round holes (1202) are located at the opposite ends of the two middle bottom plate cavity flow channels (1204); For each middle bottom plate cavity flow channel (1204), a longitudinally distributed second middle fin (12012) is arranged therein; The longitudinal length of the second middle fin (12012) is less than the longitudinal length of the middle bottom plate cavity flow channel (1204); The second middle fin (12012) is used to divide the middle bottom plate cavity flow channel (1204) into two interconnected sub-flow channels; Each middle bottom plate cavity flow channel (1204) has a first middle waist-round hole (1203) and a second middle waist-round hole (1202), which are respectively located on both sides of the second middle fin (12012).

6. The energy storage box structure according to claim 5, characterized in that: The shape of the middle bottom plate cavity flow channel (1204) is U-shaped or "凵"-shaped; The front and rear ends of the cavity flow channel (1204) of the middle bottom plate are respectively and hermetically provided with a front flow channel plugging plate (10) and a rear flow channel plugging plate (11); The first middle waist-round hole (1203) and the second middle waist-round hole (1202) are not on the same straight line and are offset front and back; The second middle waist-round hole (1202) is on the same straight line as the first right waist-round hole (903) on the right beam bottom plate (9); The first middle waist-round hole (1203) is on the same straight line as the second right waist-round hole (904) on the right beam bottom plate (9).

7. The energy storage box structure according to claim 1, characterized in that: At the lower right end of the front cross beam (15), a front cross beam round hole (1501) that runs through longitudinally is provided; Inside the lower end of the front cross beam (15), a front cross beam cavity (1502) with an open bottom is provided; On the left and right sides of the front cross beam cavity (1502), a side plugging piece (17) is respectively and hermetically provided; At the left and right ends of the front baffle (16), a front baffle water inlet round hole (1601) and a front baffle water outlet round hole (1602) are respectively provided; The front baffle water outlet round hole (1602) is arranged corresponding to the front cross beam round hole (1501); The front cross beam cavity (1502) of the front cross beam (15) is arranged corresponding to the two first right waist-round holes (903) on the right beam bottom plate (9) and the two second middle waist-round holes (1202) on the middle bottom plate (12); The bottom surface of the front cross beam (15) is sealed and connected to the bottom surfaces of the right beam bottom plate (9) and the middle bottom plate (12); The first right side waist circular hole (903) and the second middle waist circular hole (1202) are located inside the front cross beam cavity (1502); The water outlet (6) passes through the front baffle water outlet circular hole (1602) on the front baffle (16) and the front cross beam circular hole (1501) on the front cross beam (15) in sequence from front to back, and its rear opening is connected to the front cross beam cavity (1502) of the front cross beam (15).

8. The energy storage box structure according to claim 7, characterized in that: A vertically distributed front baffle (16) is connected to the front side edge of the bottom surface of the upper end of the front cross beam (15); A liquid inlet cavity is formed between the rear side surface of the front baffle plate (16) and the front side surface of the lower end of the front cross beam (15); The liquid inlet cavity is arranged correspondingly to the two second right side waist circular holes (904) on the right side beam bottom plate (9) and the two first middle waist circular holes (1203) on the middle bottom plate (12); The bottom surface of the front baffle (16) and the bottom surface of the front cross beam (15) are both sealed and connected to the bottom surfaces of the right beam bottom plate (9) and the middle bottom plate (12); The second right side waist circular hole (904) and the first middle waist circular hole (1203) are located on the inner side of the liquid inlet cavity; The water inlet (5) penetrates the front baffle water inlet circular hole (1601) on the front baffle (16) from front to back, and its rear opening is connected to the liquid inlet cavity on the rear side of the front baffle (16).

9. The energy storage box structure according to claim 1, characterized in that: The wearing part cover plate (3) is evenly distributed with wearing part cover plate circular holes (301) around it; The central position of the wearing parts cover plate (3) is provided with a parts installation area (302); The aviation plug cover plate (4) is evenly distributed with aviation plug cover plate circular holes (401) around it; The center of the aviation plug cover plate (4) has an aviation plug installation area (402); The aviation plug cover plate circular hole (401) on the aviation plug cover plate (4) and the consumable cover plate circular hole (301) on the consumable cover plate (3) are respectively arranged to correspond to the front panel circular holes (101) distributed on the front panel (104) of the upper cover (1); The aviation plug cover plate (4) is fixedly connected to the front panel (104) of the upper cover (1) by means of a first screw; After the first screw passes through the circular hole (401) on the aviation plug cover (4), it is threadedly fixedly connected with the circular hole (101) on the front panel at the corresponding position; The wearing parts cover plate (3) is fixedly connected to the front panel (104) of the upper cover (1) by means of a second screw; After the second screw passes through the consumable cover plate circular hole (301) on the consumable cover plate (3), it is threadedly fixedly connected with the front panel circular hole (101) at the corresponding position.

10. A lithium-ion battery energy storage system, characterized in that: It comprises the energy storage box structure as claimed in any one of claims 1 to 9; A plurality of lithium-ion batteries are arranged in the energy storage box structure.

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