Structure-reinforced battery box body and energy storage equipment

Abstract

The utility model relates to the field of battery energy storage, in particular to a structure strengthening type battery box body and energy storage equipment, the structure strengthening type battery box body comprises a plurality of module boxes, the module boxes are stacked up and down, and the top surface and the bottom surface of each module box extend outwards to form an upper fixing part and a lower fixing part; a plurality of supporting blocks are arranged between the upper fixing part and the lower fixing part on the same module box; and the supporting blocks on the adjacent module boxes are connected with the lower fixing parts and the upper fixing parts between the upper and lower adjacent supporting blocks. According to the scheme, the mode that the module boxes are stacked up and down and connected in pairs is adopted, the design that the supporting strength of the module boxes is enhanced through the supporting blocks so as to keep the overall stability of the box bodies is adopted, a frame similar to a storage rack in the prior art is omitted, and the material cost and the space cost of the frame are saved. Besides, the design theory of the scheme is suitable for various battery modules with different sizes, a proper number of battery modules are allowed to be selected and assembled together according to the change of the application environment, and compared with the prior art, the method is flexible and has strong adaptability.

Description

Technical Field

[0001] The utility model relates to the field of battery energy storage, in particular to a structure-reinforced module box body and an energy storage device. Background Art

[0002] In the structural design of a battery energy storage box body, in order to save space and ensure the stability of the box body, a frame similar to a storage rack is mostly designed, and battery modules (including module boxes and several batteries placed in the module boxes) are placed into the frame one by one and fixedly connected thereto. Since different battery modules may have different sizes, and at the same time, there may be a situation where the number of module boxes of the same size in different scenario applications is different. Therefore, in order to adapt to such a changeable environment, frames of different sizes need to be designed. After various frames of different sizes are designed, it may be possible that due to the application changes of the battery modules in the later stage, for example, when the application of a certain size of battery module becomes less, the frame suitable for this battery module will be idle and occupy space in vain. Therefore, the existing frames for fixing battery modules have the problems of inflexible application and idle space occupation. Content of the Utility Model

[0003] The utility model aims to provide a structure-reinforced module box body and an energy storage device to solve the problems of inflexible application and idle space occupation of the existing frames for fixing battery modules.

[0004] To achieve the above object, the utility model adopts the following technical scheme: A structure-reinforced module box body includes several module boxes, the module boxes are stacked up and down, and upper fixing parts and lower fixing parts extend outward from the top surface and the bottom surface of the module box; on the same module box, several support blocks are connected between the upper fixing part and the lower fixing part; the support blocks on adjacent module boxes are connected to the lower fixing part and the upper fixing part located between the upper and lower adjacent support blocks.

[0005] The principle and beneficial effects of this scheme are as follows: In actual application, the module boxes are stacked up one by one, and the support blocks on two adjacent module boxes are connected to the lower fixing part of the upper module box and the upper fixing part of the lower module box located between the upper and lower adjacent support blocks, so that the two upper and lower module boxes are kept relatively fixed. At the same time, the support blocks of the lower module box support the upper module box, avoiding deformation of the lower module box due to insufficient support force after stacking a large number of module boxes and causing safety accidents. Through such a pairwise connection method, finally all the module boxes are kept relatively fixed. This scheme adopts the method of stacking the module boxes up and down and connecting them pairwise, supplemented by the design of using support blocks to strengthen the support strength of the module boxes to maintain the overall stability of the box body, cancels the frame in the prior art, and saves the material cost and space cost of the frame. The design of this scheme is applicable to various battery modules of different sizes, and allows selecting an appropriate number of battery modules to be assembled together according to the changes in the application environment, which is more flexible and changeable and has stronger adaptability than the prior art.

[0006] It should be noted that the inventor has designed other improvement schemes before this scheme. In the previous scheme, the inventor also adopted the stacking method of battery boxes (equivalent to the module boxes in this scheme), but the core of the improvement of the previous scheme is to improve the anti-collision and anti-extrusion performance of the battery boxes, so that the battery boxes can withstand side impact and extrusion after being stacked and connected. It can be seen that the application environment of the battery boxes in the previous scheme is relatively harsh. For example, as part of the energy storage equipment, it is used on ships. Due to the bumps of the ship, it is easy to be hit, squeezed, etc. The module box in this scheme is a part of the energy storage equipment and is placed statically near the power generation facility, such as wind power generation or solar power generation. There is basically no collision, extrusion, etc., so the focus of this scheme in the design concept stage is different from that of the previous scheme. The focus of this scheme is to strengthen the support after the module boxes are stacked to ensure stability, while the focus of the previous scheme is to improve the anti-collision and anti-extrusion performance of the battery box, which ultimately makes this scheme different from the previous scheme in structure. This solution uses the upper fixing part, the lower fixing part and the support block between the upper fixing part and the lower fixing part on the module box to connect and fix, so that the module box has sufficient support strength and can be stacked. The previous solution uses the upper reinforcement part (equivalent to the upper fixing part in this solution) and the lower reinforcement part (equivalent to the lower fixing part in this solution) of the battery box to directly open holes and use bolts to connect to maintain relative fixation. In addition, corner fixings and auxiliary reinforcement plates are designed, and the corner fixings are used to strengthen the fixing effect between adjacent frames, thereby improving the overall structural strength of the battery box, so that the battery box can withstand greater lateral impact and extrusion; the auxiliary reinforcement part is used to strengthen the frame of the battery box to improve its lateral anti-collision performance. Therefore, although this solution and the previous solution both adopt the stacking method, the two are different in design due to different application environments.

[0007] Preferably, as an improvement, a first threaded hole is provided on the top of the support block, a locking hole is provided on the bottom of the support block opposite to the first threaded hole, through holes coaxial with the first threaded hole are provided on the upper fixing part and the lower fixing part, and a first window is provided on the bottom of the support block for screws or bolts to enter and exit the locking hole.

[0008] In this solution, a specific connection method of two adjacent support blocks above and below, the lower fixing part and the upper fixing part located therebetween is shown. In actual application, when two module boxes are stacked vertically, screws or bolts enter through the first window of the upper support block (the support block located above among two adjacent support blocks), pass through the locking hole at the bottom of this support block, then sequentially pass through the through holes of the lower fixing part of the upper module box (the module box located above among two adjacent module boxes) and the upper fixing part of the lower module box (the module box located below among two adjacent module boxes), and enter the first threaded hole at the top of the lower support block (the support block located below among two adjacent support blocks), finally making the four connected and fixed together by screws or bolts. At the same time, this design connects two adjacent support blocks above and below, and the lower fixing part and the upper fixing part located therebetween at one time, simplifying the installation process.

[0009] In this solution, the support blocks of all battery boxes form a coherent structure similar to "support columns" in the vertical direction, making the module box have stronger load-bearing performance in the vertical direction, and the upper fixing part and the lower fixing part on the module box will not easily deform during use.

[0010] Preferably, as an improvement, a positioning pin is provided between adjacent module boxes.

[0011] In this solution, the design of the positioning pin can facilitate the vertical alignment connection of two adjacent module boxes.

[0012] Preferably, as an improvement, a threaded pin hole is provided at the top of the support block, a positioning hole coaxial with the threaded pin hole is provided at the bottom of the support block, and through holes coaxial with the threaded pin hole are provided on both the upper fixing part and the lower fixing part.

[0013] In this solution, a specific positioning method of adjacent module boxes above and below is shown. In actual application, after the lower support block is placed between the upper fixing part and the lower fixing part of the lower module box, before the upper module box is stacked on the lower module box, first pass the pin through the upper fixing part of the lower module box and fix it in the threaded pin hole at the top of the lower support block. At this time, a part of the pin still protrudes from the top surface of the upper fixing part; then place the upper module box with the upper support block on the lower module box. At this time, the protruding pin passes through the lower fixing part of the upper module box and enters the positioning hole at the bottom of the upper support block, completing the positioning of the two module boxes above and below. This design can quickly align the module boxes during stacking through such a positioning method, and can also avoid the situation of module box misalignment due to accidental actions during the installation process, thereby ensuring the smooth progress of the installation.

[0014] Preferably, as an improvement, the support blocks are located on both side surfaces of the operation surface or the interface surface of the module box.

[0015] In this solution, the support blocks are designed not to be on the operation surface or interface surface of the module box to avoid operation interference or inconvenience in actual application due to too many designs on this side. At the same time, due to the stacking of module boxes, the upper and lower surfaces of the module box cannot be used. Therefore, the support blocks are designed to be located on the two side surfaces of the operation surface or interface surface of the module box.

[0016] Preferably, as an improvement, the support blocks are respectively located at both ends and the central position of the upper fixing part.

[0017] In this solution, a specific position design of the support block is shown. This design evenly distributes the support blocks on the side surface of the module box, which can make the support blocks obtain a relatively balanced support effect and strong support force, thus improving the stability of the entire box body.

[0018] Preferably, as an improvement, the support block is of a hollow structure, and several reinforcing ribs are arranged in the hollow cavity.

[0019] In this solution, this design can reduce the material cost of the support block and the weight of the entire box body. At the same time, the internal hollow structure can be used as a deformation space for anti-impact. When the support block is subjected to an accidental force, there is a buffer space to better protect the module box; in addition, the design of the reinforcing ribs can make the support block still maintain strong support force in the hollow state.

[0020] Preferably, as an improvement, several reinforcing plates are further included, and the reinforcing plates are connected to all the support blocks in the same vertical direction.

[0021] In this solution, on the basis of the fixed method of connecting all module boxes in pairs, adding the connection of the reinforcing plates to all the support blocks in the same vertical direction strengthens the connection strength and firmness of the entire box body.

[0022] Preferably, as an improvement, a plurality of support pads are fixedly connected to the bottom of the bottom-layer module box, and an operation gap is provided between adjacent support pads.

[0023] In this solution, designing support pads under the bottom-layer module box can raise the entire box body, and there is an operation gap between adjacent support pads, which can be used for loading and unloading or short-distance transportation by forklift and other equipment, and at the same time, there is a heat dissipation space on the bottom surface of the bottom-layer module box.

[0024] The present utility model also adopts the following technical solution: an energy storage device, including any one of the above-mentioned structurally strengthened battery box bodies. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the box body (without a reinforcing plate) of Embodiment 1 of the present utility model.

[0026] Figure 2 It is an enlarged view of location A in Embodiment 1 of the present utility model.

[0027] Figure 3 It is a schematic structural view of the support block in Embodiment 1 of the present utility model.

[0028] Figure 4 It is a schematic structural view of the box body (with reinforcing plate) in Embodiment 1 of the present utility model.

[0029] Reference numerals include: module box 10, upper fixing part 11, lower fixing part 12, support block 20, first threaded hole 21, locking hole 22, second threaded hole 23, first window 24, second window 25, reinforcing rib 26, threaded pin hole 27, positioning hole 28, reinforcing plate 30, support pad 40. Detailed Description of the Specific Embodiment

[0030] It is further described in detail through the following specific embodiments:

[0031] Embodiment 1

[0032] Basically as shown in the attached... Figure 1 and Figure 2 shown: A structurally reinforced battery box body includes a plurality of module boxes 10, the module boxes 10 are stacked up and down, upper fixing parts 11 and lower fixing parts 12 extend outward from the top surface and the bottom surface of the module box 10, and a plurality of support blocks 20 are arranged between the upper fixing part 11 and the lower fixing part 12 on the same module box 10. Here, it can be understood that the support blocks 20 can be distributed on the entire periphery of the module box. However, considering aspects such as material cost, installation, and non-interference or convenience in actual application, preferably, the support blocks 20 are designed to be located on both side surfaces of the operation surface or the interface surface of the module box.

[0033] When the module boxes 10 are stacked up and down, the connection methods between adjacent module boxes 10 can be various, which will not be elaborated here. In addition to the connection between adjacent module boxes 10, the support blocks 20 should also be connected to the upper fixing part 11 and / or the lower fixing part 12 to ensure that the support blocks 20 will not move or fall during transportation, disassembly and assembly. Therefore, the support blocks 20 on the upper and lower adjacent module boxes 10 are designed to be connected to the lower fixing part 12 and the upper fixing part 11 located between the upper and lower support blocks 20. Here, the upper and lower adjacent support blocks 20 can be in the same vertical direction or offset. Preferably, the upper and lower adjacent two support blocks 20 are designed to be in the same vertical direction. Considering simplifying the connection relationship and the installation process, at the same time, the upper and lower adjacent two support blocks 20 are designed to be connected to the lower fixing part 12 and the upper fixing part 11 located therebetween in total four.

[0034] To enable those skilled in the art to understand the solution of "the connection of two adjacent upper and lower support blocks 20, the lower fixing part 12 and the upper fixing part 11 located therebetween", this embodiment shows one of the connection methods, which is basically as Figure 2 shown. A first threaded hole 21 is provided at the top of the support block 20, a locking hole 22 is provided at the bottom of the support block 20 opposite to the first threaded hole 21, and through holes coaxial with the first threaded hole 21 are provided in the upper fixing part 11 and the lower fixing part 12 of the module box 10. Two adjacent upper and lower support blocks 20 and the lower fixing part 12 and the upper fixing part 11 located therebetween are connected by screws or bolts. A first window 24 for the screws or bolts to enter and exit the locking hole 22 is provided at the bottom of the support block 20. In actual application, when two module boxes 10 are stacked vertically, the bolt enters through the first window 24 of the upper support block (the support block located above among two adjacent support blocks), passes through the locking hole 22 at the bottom of the upper support block, then passes through the through holes in the lower fixing part 12 of the upper module box (the module box located above among two adjacent module boxes) and the upper fixing part 11 of the lower module box (the module box located below among two adjacent module boxes) in sequence, and enters the first threaded hole 21 at the top of the lower support block (the support block located below among two adjacent support blocks), finally enabling the screws or bolts to connect and fix the four together.

[0035] To enhance the connection strength between the module boxes 10, the number of the first threaded holes 21 can also be designed to be > 1. As an example, it is basically as Figure 3 shown, and the number of the first threaded holes 21 is designed to be 2.

[0036] In addition, a second window 25 for observing whether the screws or bolts pass through the first threaded hole 21 can also be provided at the top of the support block 20. Since the screws or bolts need to pass through the upper support block, the lower fixing part 12, the upper fixing part 11 and then enter the lower support block, and these components all have a certain thickness. If the length of the screws or bolts is not properly selected, the screws or bolts may not be connected to the first threaded hole 21 of the lower support block, or the mating length of the connection is very short, resulting in insufficient connection strength here and further affecting the firmness of the whole box body. Therefore, this design can confirm whether the connection is reliable by observing through the second window 25 whether the screws or bolts pass through the first threaded hole 21 of the lower support block.

[0037] In addition, when the module boxes 10 are stacked vertically, the adjacent upper and lower module boxes 10 should be aligned to facilitate subsequent connection and fixing. However, during the stacking process, it is difficult to align the adjacent module boxes 10, and during the subsequent installation and connection process, the adjacent module boxes 10 often get misaligned due to accidental movements. Therefore, designing positioning for the module boxes 10 is beneficial to the assembly of the whole box body. For example, positioning pins are provided between the adjacent module boxes 10.

[0038] One of the positioning pin designs in this embodiment is shown here. Basically, as Figure 2 and 3 shown, a threaded pin hole 27 is provided at the top of the support block 20. A positioning hole 28 coaxial with the threaded pin hole 27 is provided at the bottom of the support block 20. Through holes coaxial with the threaded pin hole 27 are provided in the upper fixing portion 11 and the lower fixing portion 12. Two adjacent upper and lower support blocks 20, the lower fixing portion 12 and the upper fixing portion 11 located therebetween are connected by pins. In practical applications, before two module boxes 10 are stacked, a pin is first passed through the through hole of the upper fixing portion 11 of the lower module box and fixed in the threaded pin hole 27 at the top of the lower support block. At this time, a part of the pin still protrudes from the top surface of the upper fixing portion 11. Then, the upper module box with the upper support block is placed on the lower module box. At this time, the protruding pin passes through the through hole of the lower fixing portion 12 of the upper module box and enters the positioning hole 28 at the bottom of the upper support block, thereby achieving the positioning of two adjacent upper and lower module boxes 10.

[0039] According to the principle of this solution, the support block 20 is to provide a supporting effect for the module box 10 located above it. Therefore, those skilled in the art can design a reasonable number and reasonable positions of the support blocks 20 according to the size of the module box 10. To make the support block 20 achieve a relatively balanced supporting effect and strong supporting force, preferably, the support blocks 20 are designed to be located at both ends and the central position of the upper fixing portion respectively.

[0040] Regarding the structure of the support block 20, considering the material cost of the support block 20 and the weight of the entire box body, as a further improvement, the support block 20 is designed to be a hollow structure. However, since the hollow structure weakens the supporting strength of the support block 20, several reinforcing ribs 26 are provided in the hollow cavity to enable the support block 20 to still maintain strong supporting force. As an example, basically as Figure 3 shown, two horizontal reinforcing ribs 26 are provided in the hollow cavity.

[0041] After all the module boxes 10 are stacked up and down, since the module boxes 10 are connected to each other through pairwise connection, in order to further strengthen the connection strength between the module boxes 10 and improve the firmness of the entire box body, the box body can also be designed to include a reinforcing plate 30. The reinforcing plate 30 is used to connect all the module boxes 10. Specifically, when the support block 20 has a connection relationship with the module box 10, the reinforcing plate 30 is designed to be connected to all the support blocks 20 in the same vertical direction. In practical applications, after all the module boxes 10 are stacked up and down, the support blocks 20 at the same position on all the module boxes 10 are in the same vertical direction. Basically, as Figure 1As shown, at this time, connecting the reinforcing plate 30 to all the support blocks 20 in the vertical direction can enhance the firmness of the entire box body. Here, it should be understood that if there are N support blocks 20 on a module box 10, then there will be N support blocks 20 in the vertical direction for the entire box body. At this time, the number of reinforcing plates 30 can be any value from 1 to N. Preferably, the number of reinforcing plates 30 is N, that is, the number of reinforcing plates 30 is equal to the number of support blocks 20 of a module box 10.

[0042] Regarding the connection method between the reinforcing plate 30 and the support block 20, one of them is shown in this embodiment, such as Figure 3 and Figure 4 As shown, a second threaded hole 23 is provided on the support block 20, and a hole corresponding to the second threaded hole 23 is provided on the reinforcing plate 30, and the two are connected by screws or bolts. The number of the second threaded holes 23 ≥ 1. Preferably, the number of the second threaded holes 23 is 2 to enhance the connection strength between the support block 20 and the reinforcing plate 30, thereby improving the firmness of the entire box body.

[0043] Finally, after all the module boxes 10 are stacked up and down, since the entire box body is relatively heavy, if the entire box body needs to be transported to the application scenario, auxiliary transportation such as a forklift is required. At this time, the bottom surface of the bottom module box 10 is generally attached to the ground, which makes the forklift forks unable to enter the bottom of the bottom module box 10 and cannot lift the entire box body. Moreover, the bottom surface of the bottom module box 10 being attached to the ground is also not conducive to the heat dissipation of this module box. Therefore, designing support pads 40 at the bottom of the bottom module box 10 to lift the module box 10 off the ground can effectively improve the above situation. One design of the support pad 40 is shown in this embodiment, such as Figure 1 As shown, a plurality of support pads are fixedly connected to the bottom of the bottom module box, and an operation gap is provided between adjacent support pads. The operation gap can allow equipment such as a forklift to load or transport short distances on and off the vehicle. Here, it should be understood that if there are N support blocks 20 on a module box 10, the number of the support pads 40 can be N, that is, the number of the support pads 40 is equal to the number of support blocks 20 of a module box 10; it can also be less than N, but at this time the support pads 40 should also achieve two effects: 1), lift the entire box body; 2), keep the entire box body balanced. Preferably, the number of the support pads 40 is N, that is, the number of the support pads 40 is equal to the number of support blocks 20 of a module box 10.

[0044] The above are only the embodiments of the present utility model, and common general technical solutions and / or characteristics in the solutions are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solutions of the present utility model, several modifications and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

Claims

1. A structurally reinforced battery box body, comprising a plurality of module boxes, characterized in that: The module boxes are stacked vertically. The top and bottom surfaces of the module boxes extend outwardly with upper fixing parts and lower fixing parts respectively. On the same module box, several supporting blocks are arranged between the upper fixing part and the lower fixing part. The supporting blocks on adjacent module boxes are connected to the lower fixing part and the upper fixing part located between the vertically adjacent supporting blocks. A first threaded hole is provided at the top of the supporting block, and a locking hole is provided at the bottom of the supporting block opposite to the first threaded hole. Through holes coaxial with the first threaded hole are provided on both the upper fixing part and the lower fixing part. A first window for the screw or bolt to enter and exit the locking hole is provided at the bottom of the supporting block. Adjacent two supporting blocks are in the same vertical direction.

2. The structure-reinforced battery box according to claim 1, wherein: A positioning pin is provided between adjacent module boxes.

3. The structure-reinforced battery box according to claim 2, wherein: A threaded pin hole is provided at the top of the supporting block, and a positioning hole coaxial with the threaded pin hole is provided at the bottom of the supporting block. Through holes coaxial with the threaded pin hole are provided on both the upper fixing part and the lower fixing part.

4. The structure-reinforced battery box according to claim 1, wherein: The supporting blocks are located on both side surfaces of the operation surface or the interface surface of the module box.

5. The structure-reinforced battery box according to claim 1, characterized in that: The supporting blocks are respectively located at both ends and the central position of the upper fixing part.

6. The structure-reinforced battery box according to claim 1, characterized in that: The supporting block is of a hollow structure, and several reinforcing ribs are arranged in the hollow cavity.

7. The structure-reinforced battery box according to claim 1, characterized in that: It further includes several reinforcing plates, and the reinforcing plates are connected to all the supporting blocks in the same vertical direction.

8. The structure-reinforced battery box according to claim 1, wherein: A plurality of supporting pads are fixedly connected to the bottom of the bottom layer module box, and an operation gap is provided between adjacent supporting pads.

9. An energy storage device, characterized in that: It includes the structure-strengthened battery box body according to any one of claims 1-8.

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