Stacked energy storage device

Abstract

The invention relates to a stacked energy storage device, and belongs to the technical field of energy storage equipment, the stacked energy storage device comprises a base, a plurality of battery packs and an electric control box, the plurality of battery packs are stacked on the base in sequence, the electric control box is arranged at the top of the battery packs, and the electric control box comprises a box body, a controller and an inverter; the interior of the box body is horizontally divided into a first cavity and a second cavity, the controller is arranged in the first cavity, the inverter is arranged in the second cavity, the controller is in an L shape so that an avoiding notch can be formed in the side portion of the controller, and a photovoltaic port of the controller is arranged on the top face of the controller in a protruding mode. An alternating current output port of the inverter is inserted into the first cavity from the second cavity, and the alternating current output port is located in the avoiding notch and extends upwards in an inclined mode. According to the stacked energy storage device provided by the invention, by reasonably arranging all parts in the electric control box, the integration level of the device is improved, and the overall size of the stacked energy storage device is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a stacked energy storage device. Background Art

[0002] Home energy storage devices can be used as emergency power sources for the home, mainly for emergency treatment and to meet outdoor electricity needs. Home energy storage devices can increase or decrease the number of battery packs according to actual needs to meet the daily electricity needs of the family. Through the built-in on-grid and off-grid energy storage inverter, the energy is first used to meet the electricity needs of important loads, then to charge the battery, and finally to flow to the home load, and the excess flows to the grid. However, the existing home energy storage devices have the defects of large size, large space occupation, and complex and difficult installation and wiring. Summary of the invention

[0003] Based on this, it is necessary to provide a stacked energy storage device to solve the technical problems existing in the prior art such as large size, large occupied space, and complex and difficult installation and wiring.

[0004] To achieve the above objectives, the present application provides a stacked energy storage device, which includes:

[0005] Base;

[0006] A plurality of battery packs are stacked sequentially on the base; and

[0007] An electric control box is arranged on the top of the battery pack, the electric control box includes a box body, a controller and an inverter, the box body is horizontally divided to form a first chamber and a second chamber, the controller is arranged in the first chamber, the inverter is arranged in the second chamber, the controller is L-shaped so that a side of the controller forms an avoidance gap, the photovoltaic port of the controller is convexly arranged on the top surface of the controller, the AC output port of the inverter is inserted from the second chamber into the first chamber, and the AC output port is in the avoidance gap and extends obliquely upward;

[0008] Optionally, the inner side of the controller is coated with a first thermal insulation coating layer; the junction between the inverter and the controller is coated with a second thermal insulation coating layer, and the bottom of the inverter is coated with a third thermal insulation coating layer.

[0009] Optionally, a handle is provided on the controller for easy lifting of the controller, and the handle is located in the avoidance gap.

[0010] Optionally, the handle is configured as a foldable structure.

[0011] Optionally, the handle includes an articulated seat arranged on the controller and a rotating handle rotatably connected to the articulated seat, the articulated seat has a receiving opening for matching the rotating handle, and the rotating handle is snapped into the receiving opening or disengaged from the receiving opening.

[0012] Optionally, the electric control box further includes a control panel, which is disposed on the box body of the second chamber, and a signal line port of the control panel is inserted from the second chamber into the first chamber, and the signal line port is located in the avoidance gap.

[0013] Optionally, the box body is formed by assembling a plurality of sheet metals.

[0014] Optionally, the sides adjacent to the first chamber and the second chamber are respectively the front side and the rear side, the rear side is open, the avoidance gap is close to the front side, and the second chamber is a closed space.

[0015] Optionally, a first connection port is convexly provided on the top surface of the battery pack, a groove is provided at the bottom of the battery pack at a position corresponding to the connection plug, and a second connection port adapted to the first connection port is provided in the groove.

[0016] Optionally, the battery pack is provided with a rib along the circumference of the first connection port, and when two adjacent battery packs are stacked together, the rib of the bottom battery pack is sealed with the top battery pack.

[0017] Optionally, a plate is protruding from the top surface of the battery pack to facilitate positioning of the battery pack.

[0018] Optionally, two of the plates are provided, and the two plates are disposed at opposite ends of the top surface.

[0019] Optionally, a wiring harness is connected between the controller and the inverter, and a first via rubber ring and a second via rubber ring are arranged between the controller and the inverter; the first via rubber ring and the second via rubber ring are provided with a plurality of wire holes, and the wiring harness is interference-connected with the wire holes.

[0020] Optionally, the number of the battery packs is 3-5, and a plurality of the battery packs are aligned and stacked on the base in sequence along a vertical direction.

[0021] Optionally, the length of the base is 600-700 mm, the width of the base is 200-300 mm, and the height of the battery pack is 400-500 mm.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The stacked energy storage device provided by the present application has the following beneficial effects: compared with the prior art, the stacked energy storage device of the present application includes a base, a plurality of battery packs and an electric control box, the controller and the inverter are integrated in two chambers horizontally separated in the electric control box, the controller and the inverter do not need to be arranged up and down, the height of the electric control module is reduced, the integration of the device is improved, and the influence of the inverter heating on the controller can be reduced; the controller is L-shaped, so that an avoidance gap can be formed on the side of the controller, and the AC output port of the inverter can be in the avoidance gap, which improves the integration of the device and reduces the overall volume of the stacked energy storage device; and the AC output port extends upward at an angle in the avoidance gap, further reducing the width occupied by the AC output port, thereby further reducing the overall volume of the stacked energy storage device; at the same time, the DC and signal connection port at the bottom of the controller and the first connection port of the battery pack at the bottom of the controller are connected and installed by quick plugging, which saves the traditional solution of additional crimping connection terminals and the required length of cables required at the installation site, and reduces the probability of poor communication caused by incorrect crimping sequence of signal lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the explosion structure of a stacked energy storage device provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0027] Figure 3 for Figure 1 Schematic diagram of the internal structure of the electric control box;

[0028] Figure 4 for Figure 1 Another schematic diagram of the internal structure of the central electric control box;

[0029] Figure 5 A schematic diagram of the three-dimensional structure of a battery pack of a stacked energy storage device provided in an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Base; 2. Battery pack; 210. First connection port; 220. Side dam; 230. Plate; 3. Electric control box; 310. Box body; 311. First chamber; 312. Second chamber; 320. Controller; 321. Avoidance gap; 322. Photovoltaic port; 323. Handle; 324. First thermal insulation coating layer; 325. First via rubber ring; 326. Second via rubber ring; 330. Inverter; 331. AC output port; 332. Second thermal insulation coating layer; 340. Control panel; 341. Signal line port. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, 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", "axial", "radial", "circumferential" and the like 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 application and simplifying the description, and do not indicate or imply that the referred device or element 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 application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] The embodiment of the present application provides a stacked energy storage device, please refer to Figures 1 to 4 The stacked energy storage device includes a base 1, a plurality of battery packs 2 and an electric control box 3. The plurality of battery packs 2 are stacked on the base 1 in sequence. The electric control box 3 is arranged on the top of the battery pack 2. The electric control box 3 includes a box body 310, a controller 320 and an inverter 330. The box body 310 is horizontally divided into a first chamber 311 and a second chamber 312. The controller 320 is arranged in the first chamber 311, and the inverter 330 is arranged in the second chamber 312. The controller 320 is L-shaped so that a side of the controller 320 forms an avoidance gap 321. The photovoltaic port 322 of the controller 320 is convexly arranged on the top surface of the controller 320. The AC output port 331 of the inverter 330 is inserted into the first chamber 311 from the second chamber 312. The AC output port 331 is in the avoidance gap 321 and extends obliquely upward.

[0039] It is understandable that if the AC output port 331 of the inverter 330 is horizontally inserted from the second chamber 312 into the first chamber 311, the AC output port 331 must also be connected to the transmission line, which will cause the AC output port 331 and the transmission line to occupy too much width, thereby increasing the volume of the electrical control box 3. In this embodiment, the stacked energy storage device includes a base 1, a plurality of battery packs 2 and an electric control box 3. The controller 320 and the inverter 330 are integrated in two chambers separated by the electric control box 3. The controller 320 and the inverter 330 do not need to be arranged up and down, which reduces the height of the electric control module, improves the integration of the device, and can also reduce the effect of the heat generated by the inverter 330 on the controller 320. The controller 320 is L-shaped, so that a clearance gap 321 can be formed on the side of the controller 320, and the AC output port 331 of the inverter 330 can be located in the clearance gap 321, which improves the integration of the device and reduces the overall volume of the stacked energy storage device. The AC output port 331 extends obliquely upward in the clearance gap 321, further reducing the width occupied by the AC output port 331, thereby further reducing the overall volume of the stacked energy storage device, which is convenient for carrying and installation.

[0040] At the same time, the DC and signal connection port at the bottom of the controller 320 and the first connection port of the battery pack 2 at the bottom of the controller 320 are installed by quick plugging, which saves the traditional solution of requiring additional crimping connection terminals and the required length of cables on site, and reduces the probability of poor communication caused by incorrect crimping sequence of signal lines.

[0041] On the other hand, the controller 320 is L-shaped. On the one hand, the avoidance gap 321 can be used to improve the integration of the device; on the other hand, the bottom area of ​​the controller 320 is large, which is easy to fix and has good stability.

[0042] On the other hand, the photovoltaic port 322 of the controller 320 is located on the top surface of the controller 320, and the AC output port 331 of the inverter 330 is located on the side of the controller 320. These two types of wires are placed separately, which does not affect the wiring harness plugging and unplugging and can reduce signal interference.

[0043] In one embodiment, see Figure 2 The controller 320 is provided with a handle 323 for easy carrying of the controller 320 , and the handle 323 is located in the avoidance gap 321 , further improving the space utilization rate in the avoidance gap 321 .

[0044] In one embodiment, see Figure 2 The handle 323 is configured as a foldable structure, so that the handle 323 can be folded up when not in use, further improving the space utilization rate within the avoidance gap 321.

[0045] Specifically, the handle 323 includes an articulated seat for setting the controller 320 and a rotating handle rotatably connected to the articulated seat, the articulated seat has a receiving opening for matching the rotating handle, and the rotating handle is engaged with or disengaged from the receiving opening. When the handle 323 needs to be used, the AC output port 331 is not connected, and the handle 323 can be used normally; after the controller 320 is installed, the handle 323 is no longer used, and the handle 323 is folded up, which will not affect the connection of the AC output port 331.

[0046] Reference Figure 3 as well as Figure 4 At the same time, since the inverter 330 generates a lot of heat during operation. In order to avoid a lot of heat being transferred to the controller 320 and the battery pack 2 and affecting them, a first thermal insulation coating layer 324 is coated on the inner side of the controller 320, a second thermal insulation coating layer 332 is coated at the junction of the inverter 330 and the controller 320, and a third thermal insulation coating layer is coated on the bottom of the inverter 330. In this embodiment, the first thermal insulation coating layer 324 is coated on the inner wall of the controller 320 away from the inverter 330; the second thermal insulation coating layer 332 is coated on the horizontal inner wall and the vertical inner wall of the inverter 330 close to the controller 320, so as to achieve a better thermal insulation effect with a lower coating area. By setting the thermal insulation coating layer, a double-layer thermal insulation effect can be formed, thereby effectively preventing heat from being transferred to the controller 320 and the battery pack 2.

[0047] In addition, there is a wiring harness connected between the inverter 330 and the controller 320. The wiring harness can also transfer heat during operation and affect normal operation. For this reason, a first through-hole rubber ring 325 and a second through-hole rubber ring 326 are provided between the controller 320 and the inverter 330, that is, at the junction of the wiring harness. The first through-hole rubber ring 325 and the second through-hole rubber ring 326 are fixedly installed on the inner wall of the controller 320 close to the inverter 330. The first through-hole rubber ring 325 and the second through-hole rubber ring 326 are provided with a plurality of wire holes. The wiring harness is interference-connected with these wire holes to effectively prevent heat transfer.

[0048] In one embodiment, please refer to Figure 1 and Figure 2 The electric control box 3 also includes a control panel 340 , which is disposed on the box body 310 of the second chamber 312 , and a signal line port 341 of the control panel 340 is inserted from the second chamber 312 into the first chamber 311 , and the signal line port 341 is located in the avoidance gap 321 .

[0049] Specifically, the control panel 340 is connected to the controller 320 and the inverter 330 at the same time, so that the switches are integrated into one, and the switching on and off of the stacked energy storage device is simpler and faster.

[0050] In one embodiment, please refer to Figures 1 to 5 The battery pack 2 and the sidewall 220 are formed by sheet metal, thus having good forming performance and thermal conductivity; the box 310 is composed of multiple sheet metals, which is convenient for installation, disassembly, transportation or storage; the controller 320 and the inverter 330 are formed by sheet metal using aluminum plates, thus having good forming performance and thermal conductivity. The sheet metal can also be made of aluminum-zinc-coated sheet to have better forming performance and thermal conductivity. At the same time, the use of aluminum and iron for manufacturing can also effectively prevent the internal components in the battery pack 2, the box 310, the controller 320 and the inverter 330 from being affected by electromagnetic interference.

[0051] In one embodiment, see Figure 2 The sides adjacent to the first chamber 311 and the second chamber 312 are the front side and the rear side respectively, the rear side is open, the avoidance gap 321 is close to the front side, and the second chamber 312 is a closed space.

[0052] In this way, the rear side of the first chamber 311 is opened to facilitate the passage of the wiring harness and the heat dissipation of the controller 320 .

[0053] In one embodiment, please refer to FIG. 5 , a first connection port 210 is convexly provided on the top surface of the battery pack 2, a groove is provided at the bottom of the battery pack 2 corresponding to the position of the connection plug, and a second connection port adapted to the first connection port 210 is provided in the groove, so that each battery pack 2 can be connected during the stacking process.

[0054] In one embodiment, see Figure 5 The battery pack 2 is provided with a rib 220 along the circumference of the first connection port 210. When two adjacent battery packs 2 are stacked together, the rib 220 of the bottom battery pack 2 is sealed with the top battery pack 2, thereby reducing the possibility of liquid or dust entering the first connection port 210 and the second connection port, thereby ensuring the safe use of the stacked energy storage device.

[0055] In one embodiment, see Figure 5 A plate 230 is protruding from the top surface of the battery pack 2 to facilitate positioning of the battery pack 2 .

[0056] Similarly, a groove is also provided on the bottom surface of the battery pack 2 corresponding to the plate 230 , and an inclined guiding surface is provided on the top of the plate 230 to facilitate the plate 230 to enter the groove and realize the quick connection of the two battery packs 2 .

[0057] In one embodiment, see Figure 5 There are two plates 230, which are disposed at opposite ends of the top surface to improve the positioning effect.

[0058] In other embodiments, the energy storage capacity of a single battery pack 2 is about 7kWh, the number of battery packs 2 is generally between three and five, and several battery packs 2 are aligned and stacked in sequence on the base 1 in the vertical direction. The number of battery packs 2 can be increased or decreased according to actual needs, and the length of the base is 600-700mm, the width of the base is 200-300mm, and the height of the battery pack is 400-500mm, so as to obtain better energy density with a smaller volume while ensuring the performance of the energy storage device.

[0059] Exemplarily, the stacked energy storage device of the present application is provided with five battery packs 2, which fully meet the energy storage needs of a household.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A stacked energy storage device, It is characterized in that include: Base (1); A plurality of battery packs (2) are stacked in sequence on the base (1); as well as An electric control box (3) is arranged on the top of the battery pack (2), the electric control box (3) comprising a box body (310), a controller (320) and an inverter (330), the box body (310) being horizontally divided into a first chamber (311) and a second chamber (312), the controller (320) being arranged in the first chamber (311), the inverter (330) being arranged in the second chamber (312), the controller (320) being L-shaped so that a side of the controller (320) forms an avoidance notch (321), the photovoltaic port (322) of the controller (320) being protruding from the top surface of the controller (320), the AC output port (331) of the inverter (330) being inserted from the second chamber (312) into the first chamber (311), the AC output port (331) being located in the avoidance notch (321) and extending obliquely upward; The inner side of the controller (320) is coated with a first thermal insulation coating layer (324); the junction between the inverter (330) and the controller (320) is coated with a second thermal insulation coating layer (332); and the bottom of the inverter (330) is coated with a third thermal insulation coating layer.

2. The stacked energy storage device according to claim 1, It is characterized in that The controller (320) is provided with a handle (323) for facilitating carrying the controller (320), and the handle (323) is located in the avoidance gap (321).

3. The stacked energy storage device according to claim 2, It is characterized in that The handle (323) is configured as a foldable structure.

4. The stacked energy storage device according to claim 3, It is characterized in that The handle (323) comprises an articulated seat arranged on the controller (320) and a rotating handle rotatably connected to the articulated seat, the articulated seat having a receiving opening for matching the rotating handle, and the rotating handle is engaged with the receiving opening or detached from the receiving opening.

5. The stacked energy storage device according to claim 1, It is characterized in that The electric control box (3) further comprises a control panel (340), wherein the control panel (340) is arranged on the box body (310) of the second chamber (312), and a signal line port (341) of the control panel (340) is inserted from the second chamber (312) into the first chamber (311), and the signal line port (341) is located in the avoidance gap (321).

6. The stacked energy storage device according to claim 1, It is characterized in that The box body (310) is formed by assembling a plurality of metal sheets.

7. The stacked energy storage device according to claim 1, It is characterized in that The adjacent sides of the first chamber (311) and the second chamber (312) are respectively the front side and the rear side, the rear side is open, the avoidance gap (321) is close to the front side, and the second chamber (312) is a closed space.

8. The stacked energy storage device according to claim 1, It is characterized in that A first connection port (210) is convexly provided on the top surface of the battery pack (2), and a groove is provided at the bottom of the battery pack (2) at a position corresponding to the connection plug, wherein a second connection port adapted to the first connection port (210) is provided in the groove.

9. The stacked energy storage device according to claim 8, It is characterized in that The battery pack (2) is provided with a rib (220) along the circumference of the first connection port (210); when two adjacent battery packs (2) are stacked together, the rib (220) of the battery pack (2) at the bottom is sealed with the battery pack (2) at the top.

10. The stacked energy storage device according to claim 1, It is characterized in that A plate (230) is convexly provided on the top surface of the battery pack (2) for facilitating the positioning of the battery pack (2).

11. The stacked energy storage device according to claim 10, It is characterized in that Two of the plate members (230) are provided, and the two plate members (230) are respectively arranged at two opposite ends of the top surface.

12. The stacked energy storage device according to any one of claims 1 to 11, It is characterized in that A wiring harness is connected between the controller (320) and the inverter (330), and a first through-hole rubber ring (325) and a second through-hole rubber ring (326) are provided between the controller (320) and the inverter (330); the first through-hole rubber ring (325) and the second through-hole rubber ring (326) are provided with a plurality of through-holes, and the wiring harness is interference-connected with the through-holes.

13. The stacked energy storage device according to claim 1, It is characterized in that The number of the battery packs (2) is 3-5, and a plurality of the battery packs (2) are aligned and stacked on the base (1) in sequence along the vertical direction.

14. The stacked energy storage device according to claim 13, It is characterized in that The length of the base (1) is 600-700 mm, the width of the base (1) is 200-300 mm, and the height of the battery pack (2) is 400-500 mm.

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